refactor(frontend): os.tsに引き込んだscripts/api.tsの再exportをやめる (#12694)

* refactor(frontend): os.tsに引き込んだscripts/api.tsの再exportをやめる

* fix

* fix

* renate to "misskeyApi"

* rename file

112 files changed, 313 insertions, 239 deletions

diff --git a/packages/frontend/src/pages/_error_.vue b/packages/frontend/src/pages/_error_.vue
index 72a12e3c7b..10e8ccda06 100644
--- a/packages/frontend/src/pages/_error_.vue
+++ b/packages/frontend/src/pages/_error_.vue
@@ -29,7 +29,7 @@ import { ref, computed } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import { version } from '@/config.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { unisonReload } from '@/scripts/unison-reload.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -46,7 +46,7 @@ const loaded = ref(false);
 const serverIsDead = ref(false);
 const meta = ref<Misskey.entities.MetaResponse | null>(null);
 
-os.api('meta', {
+misskeyApi('meta', {
 	detail: false,
 }).then(res => {
 	loaded.value = true;
diff --git a/packages/frontend/src/pages/about.vue b/packages/frontend/src/pages/about.vue
index 44095348f6..f402b26ad8 100644
--- a/packages/frontend/src/pages/about.vue
+++ b/packages/frontend/src/pages/about.vue
@@ -114,7 +114,7 @@ import FormSplit from '@/components/form/split.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
 import MkInstanceStats from '@/components/MkInstanceStats.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import number from '@/filters/number.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -136,7 +136,7 @@ watch(tab, () => {
 	}
 });
 
-const initStats = () => os.api('stats', {
+const initStats = () => misskeyApi('stats', {
 }).then((res) => {
 	stats.value = res;
 });
diff --git a/packages/frontend/src/pages/admin-file.vue b/packages/frontend/src/pages/admin-file.vue
index 56b5e7d926..4a9c659a97 100644
--- a/packages/frontend/src/pages/admin-file.vue
+++ b/packages/frontend/src/pages/admin-file.vue
@@ -79,6 +79,7 @@ import MkUserCardMini from '@/components/MkUserCardMini.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import bytes from '@/filters/bytes.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { iAmAdmin, iAmModerator } from '@/account.js';
@@ -93,8 +94,8 @@ const props = defineProps<{
 }>();
 
 async function fetch() {
-	file.value = await os.api('drive/files/show', { fileId: props.fileId });
-	info.value = await os.api('admin/drive/show-file', { fileId: props.fileId });
+	file.value = await misskeyApi('drive/files/show', { fileId: props.fileId });
+	info.value = await misskeyApi('admin/drive/show-file', { fileId: props.fileId });
 	isSensitive.value = file.value.isSensitive;
 }
 
@@ -113,7 +114,7 @@ async function del() {
 }
 
 async function toggleIsSensitive(v) {
-	await os.api('drive/files/update', { fileId: props.fileId, isSensitive: v });
+	await misskeyApi('drive/files/update', { fileId: props.fileId, isSensitive: v });
 	isSensitive.value = v;
 }
 
diff --git a/packages/frontend/src/pages/admin-user.vue b/packages/frontend/src/pages/admin-user.vue
index ce820e10e8..85417f0ecb 100644
--- a/packages/frontend/src/pages/admin-user.vue
+++ b/packages/frontend/src/pages/admin-user.vue
@@ -219,6 +219,7 @@ import FormSuspense from '@/components/form/suspense.vue';
 import MkFileListForAdmin from '@/components/MkFileListForAdmin.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { url } from '@/config.js';
 import { acct } from '@/filters/user.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -262,11 +263,11 @@ const announcementsPagination = {
 const expandedRoles = ref([]);
 
 function createFetcher() {
-	return () => Promise.all([os.api('users/show', {
+	return () => Promise.all([misskeyApi('users/show', {
 		userId: props.userId,
-	}), os.api('admin/show-user', {
+	}), misskeyApi('admin/show-user', {
 		userId: props.userId,
-	}), iAmAdmin ? os.api('admin/get-user-ips', {
+	}), iAmAdmin ? misskeyApi('admin/get-user-ips', {
 		userId: props.userId,
 	}) : Promise.resolve(null)]).then(([_user, _info, _ips]) => {
 		user.value = _user;
@@ -278,7 +279,7 @@ function createFetcher() {
 		moderationNote.value = info.value.moderationNote;
 
 		watch(moderationNote, async () => {
-			await os.api('admin/update-user-note', { userId: user.value.id, text: moderationNote.value });
+			await misskeyApi('admin/update-user-note', { userId: user.value.id, text: moderationNote.value });
 			await refreshUser();
 		});
 	});
@@ -301,7 +302,7 @@ async function resetPassword() {
 	if (confirm.canceled) {
 		return;
 	} else {
-		const { password } = await os.api('admin/reset-password', {
+		const { password } = await misskeyApi('admin/reset-password', {
 			userId: user.value.id,
 		});
 		os.alert({
@@ -319,7 +320,7 @@ async function toggleSuspend(v) {
 	if (confirm.canceled) {
 		suspended.value = !v;
 	} else {
-		await os.api(v ? 'admin/suspend-user' : 'admin/unsuspend-user', { userId: user.value.id });
+		await misskeyApi(v ? 'admin/suspend-user' : 'admin/unsuspend-user', { userId: user.value.id });
 		await refreshUser();
 	}
 }
@@ -331,7 +332,7 @@ async function unsetUserAvatar() {
 	});
 	if (confirm.canceled) return;
 	const process = async () => {
-		await os.api('admin/unset-user-avatar', { userId: user.value.id });
+		await misskeyApi('admin/unset-user-avatar', { userId: user.value.id });
 		os.success();
 	};
 	await process().catch(err => {
@@ -350,7 +351,7 @@ async function unsetUserBanner() {
 	});
 	if (confirm.canceled) return;
 	const process = async () => {
-		await os.api('admin/unset-user-banner', { userId: user.value.id });
+		await misskeyApi('admin/unset-user-banner', { userId: user.value.id });
 		os.success();
 	};
 	await process().catch(err => {
@@ -369,7 +370,7 @@ async function deleteAllFiles() {
 	});
 	if (confirm.canceled) return;
 	const process = async () => {
-		await os.api('admin/delete-all-files-of-a-user', { userId: user.value.id });
+		await misskeyApi('admin/delete-all-files-of-a-user', { userId: user.value.id });
 		os.success();
 	};
 	await process().catch(err => {
@@ -406,7 +407,7 @@ async function deleteAccount() {
 }
 
 async function assignRole() {
-	const roles = await os.api('admin/roles/list');
+	const roles = await misskeyApi('admin/roles/list');
 
 	const { canceled, result: roleId } = await os.select({
 		title: i18n.ts._role.chooseRoleToAssign,
@@ -482,7 +483,7 @@ watch(() => props.userId, () => {
 });
 
 watch(user, () => {
-	os.api('ap/get', {
+	misskeyApi('ap/get', {
 		uri: user.value.uri ?? `${url}/users/${user.value.id}`,
 	}).then(res => {
 		ap.value = res;
diff --git a/packages/frontend/src/pages/admin/ads.vue b/packages/frontend/src/pages/admin/ads.vue
index 5884ac74b5..eb9aef0e48 100644
--- a/packages/frontend/src/pages/admin/ads.vue
+++ b/packages/frontend/src/pages/admin/ads.vue
@@ -96,6 +96,7 @@ import MkFolder from '@/components/MkFolder.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import FormSplit from '@/components/form/split.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -108,7 +109,7 @@ const daysOfWeek: string[] = [i18n.ts._weekday.sunday, i18n.ts._weekday.monday,
 const filterType = ref('all');
 let publishing: boolean | null = null;
 
-os.api('admin/ad/list', { publishing: publishing }).then(adsResponse => {
+misskeyApi('admin/ad/list', { publishing: publishing }).then(adsResponse => {
 	if (adsResponse != null) {
 		ads.value = adsResponse.map(r => {
 			const exdate = new Date(r.expiresAt);
@@ -174,7 +175,7 @@ function remove(ad) {
 
 function save(ad) {
 	if (ad.id == null) {
-		os.api('admin/ad/create', {
+		misskeyApi('admin/ad/create', {
 			...ad,
 			expiresAt: new Date(ad.expiresAt).getTime(),
 			startsAt: new Date(ad.startsAt).getTime(),
@@ -191,7 +192,7 @@ function save(ad) {
 			});
 		});
 	} else {
-		os.api('admin/ad/update', {
+		misskeyApi('admin/ad/update', {
 			...ad,
 			expiresAt: new Date(ad.expiresAt).getTime(),
 			startsAt: new Date(ad.startsAt).getTime(),
@@ -210,7 +211,7 @@ function save(ad) {
 }
 
 function more() {
-	os.api('admin/ad/list', { untilId: ads.value.reduce((acc, ad) => ad.id != null ? ad : acc).id, publishing: publishing }).then(adsResponse => {
+	misskeyApi('admin/ad/list', { untilId: ads.value.reduce((acc, ad) => ad.id != null ? ad : acc).id, publishing: publishing }).then(adsResponse => {
 		if (adsResponse == null) return;
 		ads.value = ads.value.concat(adsResponse.map(r => {
 			const exdate = new Date(r.expiresAt);
@@ -227,7 +228,7 @@ function more() {
 }
 
 function refresh() {
-	os.api('admin/ad/list', { publishing: publishing }).then(adsResponse => {
+	misskeyApi('admin/ad/list', { publishing: publishing }).then(adsResponse => {
 		if (adsResponse == null) return;
 		ads.value = adsResponse.map(r => {
 			const exdate = new Date(r.expiresAt);
diff --git a/packages/frontend/src/pages/admin/announcements.vue b/packages/frontend/src/pages/admin/announcements.vue
index e4bbe15955..f941d512b3 100644
--- a/packages/frontend/src/pages/admin/announcements.vue
+++ b/packages/frontend/src/pages/admin/announcements.vue
@@ -79,6 +79,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import MkRadios from '@/components/MkRadios.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -86,7 +87,7 @@ import MkTextarea from '@/components/MkTextarea.vue';
 
 const announcements = ref<any[]>([]);
 
-os.api('admin/announcements/list').then(announcementResponse => {
+misskeyApi('admin/announcements/list').then(announcementResponse => {
 	announcements.value = announcementResponse;
 });
 
@@ -112,7 +113,7 @@ function del(announcement) {
 	}).then(({ canceled }) => {
 		if (canceled) return;
 		announcements.value = announcements.value.filter(x => x !== announcement);
-		os.api('admin/announcements/delete', announcement);
+		misskeyApi('admin/announcements/delete', announcement);
 	});
 }
 
@@ -134,13 +135,13 @@ async function save(announcement) {
 }
 
 function more() {
-	os.api('admin/announcements/list', { untilId: announcements.value.reduce((acc, announcement) => announcement.id != null ? announcement : acc).id }).then(announcementResponse => {
+	misskeyApi('admin/announcements/list', { untilId: announcements.value.reduce((acc, announcement) => announcement.id != null ? announcement : acc).id }).then(announcementResponse => {
 		announcements.value = announcements.value.concat(announcementResponse);
 	});
 }
 
 function refresh() {
-	os.api('admin/announcements/list').then(announcementResponse => {
+	misskeyApi('admin/announcements/list').then(announcementResponse => {
 		announcements.value = announcementResponse;
 	});
 }
diff --git a/packages/frontend/src/pages/admin/bot-protection.vue b/packages/frontend/src/pages/admin/bot-protection.vue
index 8c9d670d11..99b8070b71 100644
--- a/packages/frontend/src/pages/admin/bot-protection.vue
+++ b/packages/frontend/src/pages/admin/bot-protection.vue
@@ -72,6 +72,7 @@ import MkButton from '@/components/MkButton.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import FormSlot from '@/components/form/slot.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 
@@ -86,7 +87,7 @@ const turnstileSiteKey = ref<string | null>(null);
 const turnstileSecretKey = ref<string | null>(null);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	hcaptchaSiteKey.value = meta.hcaptchaSiteKey;
 	hcaptchaSecretKey.value = meta.hcaptchaSecretKey;
 	recaptchaSiteKey.value = meta.recaptchaSiteKey;
diff --git a/packages/frontend/src/pages/admin/branding.vue b/packages/frontend/src/pages/admin/branding.vue
index 38cce69735..72b47949e7 100644
--- a/packages/frontend/src/pages/admin/branding.vue
+++ b/packages/frontend/src/pages/admin/branding.vue
@@ -101,6 +101,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { instance, fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -122,7 +123,7 @@ const notFoundImageUrl = ref<string | null>(null);
 const manifestJsonOverride = ref<string>('{}');
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	iconUrl.value = meta.iconUrl;
 	app192IconUrl.value = meta.app192IconUrl;
 	app512IconUrl.value = meta.app512IconUrl;
diff --git a/packages/frontend/src/pages/admin/database.vue b/packages/frontend/src/pages/admin/database.vue
index 53f556bb64..27541f576d 100644
--- a/packages/frontend/src/pages/admin/database.vue
+++ b/packages/frontend/src/pages/admin/database.vue
@@ -21,13 +21,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed } from 'vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import bytes from '@/filters/bytes.js';
 import number from '@/filters/number.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
-const databasePromiseFactory = () => os.api('admin/get-table-stats').then(res => Object.entries(res).sort((a, b) => b[1].size - a[1].size));
+const databasePromiseFactory = () => misskeyApi('admin/get-table-stats').then(res => Object.entries(res).sort((a, b) => b[1].size - a[1].size));
 
 const headerActions = computed(() => []);
 
diff --git a/packages/frontend/src/pages/admin/email-settings.vue b/packages/frontend/src/pages/admin/email-settings.vue
index 2e6ad3b1d3..c6fd02d67e 100644
--- a/packages/frontend/src/pages/admin/email-settings.vue
+++ b/packages/frontend/src/pages/admin/email-settings.vue
@@ -73,6 +73,7 @@ import FormSuspense from '@/components/form/suspense.vue';
 import FormSplit from '@/components/form/split.vue';
 import FormSection from '@/components/form/section.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance, instance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -87,7 +88,7 @@ const smtpUser = ref<string>('');
 const smtpPass = ref<string>('');
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	enableEmail.value = meta.enableEmail;
 	email.value = meta.email;
 	smtpSecure.value = meta.smtpSecure;
diff --git a/packages/frontend/src/pages/admin/external-services.vue b/packages/frontend/src/pages/admin/external-services.vue
index 22dc115fda..4468c8279f 100644
--- a/packages/frontend/src/pages/admin/external-services.vue
+++ b/packages/frontend/src/pages/admin/external-services.vue
@@ -42,6 +42,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import FormSection from '@/components/form/section.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -50,7 +51,7 @@ const deeplAuthKey = ref<string>('');
 const deeplIsPro = ref<boolean>(false);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	deeplAuthKey.value = meta.deeplAuthKey;
 	deeplIsPro.value = meta.deeplIsPro;
 }
diff --git a/packages/frontend/src/pages/admin/files.vue b/packages/frontend/src/pages/admin/files.vue
index a366b302c7..a614cacd45 100644
--- a/packages/frontend/src/pages/admin/files.vue
+++ b/packages/frontend/src/pages/admin/files.vue
@@ -42,6 +42,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import MkFileListForAdmin from '@/components/MkFileListForAdmin.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -83,7 +84,7 @@ async function find() {
 	});
 	if (canceled) return;
 
-	os.api('admin/drive/show-file', q.startsWith('http://') || q.startsWith('https://') ? { url: q.trim() } : { fileId: q.trim() }).then(file => {
+	misskeyApi('admin/drive/show-file', q.startsWith('http://') || q.startsWith('https://') ? { url: q.trim() } : { fileId: q.trim() }).then(file => {
 		show(file);
 	}).catch(err => {
 		if (err.code === 'NO_SUCH_FILE') {
diff --git a/packages/frontend/src/pages/admin/index.vue b/packages/frontend/src/pages/admin/index.vue
index 5e92cbd600..333bac724b 100644
--- a/packages/frontend/src/pages/admin/index.vue
+++ b/packages/frontend/src/pages/admin/index.vue
@@ -34,6 +34,7 @@ import MkSuperMenu from '@/components/MkSuperMenu.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import { instance } from '@/instance.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { lookupUser, lookupUserByEmail } from '@/scripts/lookup-user.js';
 import { useRouter } from '@/router.js';
 import { PageMetadata, definePageMetadata, provideMetadataReceiver } from '@/scripts/page-metadata.js';
@@ -62,7 +63,7 @@ let noEmailServer = !instance.enableEmail;
 const thereIsUnresolvedAbuseReport = ref(false);
 const currentPage = computed(() => router.currentRef.value.child);
 
-os.api('admin/abuse-user-reports', {
+misskeyApi('admin/abuse-user-reports', {
 	state: 'unresolved',
 	limit: 1,
 }).then(reports => {
@@ -266,7 +267,7 @@ provideMetadataReceiver((info) => {
 });
 
 function invite() {
-	os.api('admin/invite/create').then(x => {
+	misskeyApi('admin/invite/create').then(x => {
 		os.alert({
 			type: 'info',
 			text: x[0].code,
diff --git a/packages/frontend/src/pages/admin/instance-block.vue b/packages/frontend/src/pages/admin/instance-block.vue
index 356eca2af6..58e147f111 100644
--- a/packages/frontend/src/pages/admin/instance-block.vue
+++ b/packages/frontend/src/pages/admin/instance-block.vue
@@ -29,6 +29,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -38,7 +39,7 @@ const silencedHosts = ref<string>('');
 const tab = ref('block');
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	blockedHosts.value = meta.blockedHosts.join('\n');
 	silencedHosts.value = meta.silencedHosts.join('\n');
 }
diff --git a/packages/frontend/src/pages/admin/invites.vue b/packages/frontend/src/pages/admin/invites.vue
index 838ef52b14..8b06ec59bd 100644
--- a/packages/frontend/src/pages/admin/invites.vue
+++ b/packages/frontend/src/pages/admin/invites.vue
@@ -59,6 +59,7 @@ import { computed, ref, shallowRef } from 'vue';
 import XHeader from './_header_.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkButton from '@/components/MkButton.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkSelect from '@/components/MkSelect.vue';
@@ -93,14 +94,14 @@ async function createWithOptions() {
 		count: createCount.value,
 	};
 
-	const tickets = await os.api('admin/invite/create', options);
+	const tickets = await misskeyApi('admin/invite/create', options);
 	os.alert({
 		type: 'success',
 		title: i18n.ts.inviteCodeCreated,
-		text: tickets?.map(x => x.code).join('\n'),
+		text: tickets.map(x => x.code).join('\n'),
 	});
 
-	tickets?.forEach(ticket => pagingComponent.value?.prepend(ticket));
+	tickets.forEach(ticket => pagingComponent.value?.prepend(ticket));
 }
 
 function deleted(id: string) {
diff --git a/packages/frontend/src/pages/admin/moderation.vue b/packages/frontend/src/pages/admin/moderation.vue
index f6c0b29403..4915bee713 100644
--- a/packages/frontend/src/pages/admin/moderation.vue
+++ b/packages/frontend/src/pages/admin/moderation.vue
@@ -66,6 +66,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -81,7 +82,7 @@ const tosUrl = ref<string | null>(null);
 const privacyPolicyUrl = ref<string | null>(null);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	enableRegistration.value = !meta.disableRegistration;
 	emailRequiredForSignup.value = meta.emailRequiredForSignup;
 	sensitiveWords.value = meta.sensitiveWords.join('\n');
diff --git a/packages/frontend/src/pages/admin/object-storage.vue b/packages/frontend/src/pages/admin/object-storage.vue
index 7019971e90..03b29f1873 100644
--- a/packages/frontend/src/pages/admin/object-storage.vue
+++ b/packages/frontend/src/pages/admin/object-storage.vue
@@ -90,6 +90,7 @@ import MkInput from '@/components/MkInput.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import FormSplit from '@/components/form/split.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -110,7 +111,7 @@ const objectStorageSetPublicRead = ref<boolean>(false);
 const objectStorageS3ForcePathStyle = ref<boolean>(true);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	useObjectStorage.value = meta.useObjectStorage;
 	objectStorageBaseUrl.value = meta.objectStorageBaseUrl;
 	objectStorageBucket.value = meta.objectStorageBucket;
diff --git a/packages/frontend/src/pages/admin/other-settings.vue b/packages/frontend/src/pages/admin/other-settings.vue
index 5bb328ac92..bb0199eb40 100644
--- a/packages/frontend/src/pages/admin/other-settings.vue
+++ b/packages/frontend/src/pages/admin/other-settings.vue
@@ -47,6 +47,7 @@ import { ref, computed } from 'vue';
 import XHeader from './_header_.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -58,7 +59,7 @@ const enableChartsForRemoteUser = ref<boolean>(false);
 const enableChartsForFederatedInstances = ref<boolean>(false);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	enableServerMachineStats.value = meta.enableServerMachineStats;
 	enableIdenticonGeneration.value = meta.enableIdenticonGeneration;
 	enableChartsForRemoteUser.value = meta.enableChartsForRemoteUser;
diff --git a/packages/frontend/src/pages/admin/overview.active-users.vue b/packages/frontend/src/pages/admin/overview.active-users.vue
index 5e67370c2b..8acc5786b2 100644
--- a/packages/frontend/src/pages/admin/overview.active-users.vue
+++ b/packages/frontend/src/pages/admin/overview.active-users.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -52,7 +52,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/active-users', { limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/active-users', { limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/pages/admin/overview.ap-requests.vue b/packages/frontend/src/pages/admin/overview.ap-requests.vue
index 0de62fadea..694be9a590 100644
--- a/packages/frontend/src/pages/admin/overview.ap-requests.vue
+++ b/packages/frontend/src/pages/admin/overview.ap-requests.vue
@@ -23,7 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
 import { defaultStore } from '@/store.js';
@@ -65,7 +65,7 @@ onMounted(async () => {
 		}));
 	};
 
-	const raw = await os.api('charts/ap-request', { limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/ap-request', { limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 	const succColor = '#87e000';
diff --git a/packages/frontend/src/pages/admin/overview.federation.vue b/packages/frontend/src/pages/admin/overview.federation.vue
index cfd1c6a566..d3503bd462 100644
--- a/packages/frontend/src/pages/admin/overview.federation.vue
+++ b/packages/frontend/src/pages/admin/overview.federation.vue
@@ -49,6 +49,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, ref } from 'vue';
 import XPie, { type InstanceForPie } from './overview.pie.vue';
 import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import number from '@/filters/number.js';
 import MkNumberDiff from '@/components/MkNumberDiff.vue';
 import { i18n } from '@/i18n.js';
@@ -65,13 +66,13 @@ const fetching = ref(true);
 const { handler: externalTooltipHandler } = useChartTooltip();
 
 onMounted(async () => {
-	const chart = await os.apiGet('charts/federation', { limit: 2, span: 'day' });
+	const chart = await misskeyApiGet('charts/federation', { limit: 2, span: 'day' });
 	federationPubActive.value = chart.pubActive[0];
 	federationPubActiveDiff.value = chart.pubActive[0] - chart.pubActive[1];
 	federationSubActive.value = chart.subActive[0];
 	federationSubActiveDiff.value = chart.subActive[0] - chart.subActive[1];
 
-	os.apiGet('federation/stats', { limit: 10 }).then(res => {
+	misskeyApiGet('federation/stats', { limit: 10 }).then(res => {
 		topSubInstancesForPie.value = [
 			...res.topSubInstances.map(x => ({
 				name: x.host,
diff --git a/packages/frontend/src/pages/admin/overview.instances.vue b/packages/frontend/src/pages/admin/overview.instances.vue
index de34f0c09b..8d731cbc90 100644
--- a/packages/frontend/src/pages/admin/overview.instances.vue
+++ b/packages/frontend/src/pages/admin/overview.instances.vue
@@ -18,8 +18,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { ref } from 'vue';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import MkInstanceCardMini from '@/components/MkInstanceCardMini.vue';
 import { defaultStore } from '@/store.js';
@@ -28,7 +28,7 @@ const instances = ref<Misskey.entities.FederationInstance[]>([]);
 const fetching = ref(true);
 
 const fetch = async () => {
-	const fetchedInstances = await os.api('federation/instances', {
+	const fetchedInstances = await misskeyApi('federation/instances', {
 		sort: '+latestRequestReceivedAt',
 		limit: 6,
 	});
diff --git a/packages/frontend/src/pages/admin/overview.moderators.vue b/packages/frontend/src/pages/admin/overview.moderators.vue
index 3034bdd57e..75b731996b 100644
--- a/packages/frontend/src/pages/admin/overview.moderators.vue
+++ b/packages/frontend/src/pages/admin/overview.moderators.vue
@@ -18,15 +18,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { onMounted, ref } from 'vue';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
 import { defaultStore } from '@/store.js';
 
 const moderators = ref<Misskey.entities.UserDetailed[] | null>(null);
 const fetching = ref(true);
 
 onMounted(async () => {
-	moderators.value = await os.api('admin/show-users', {
+	moderators.value = await misskeyApi('admin/show-users', {
 		sort: '+lastActiveDate',
 		state: 'adminOrModerator',
 		limit: 30,
diff --git a/packages/frontend/src/pages/admin/overview.stats.vue b/packages/frontend/src/pages/admin/overview.stats.vue
index 78f435e731..3fb24747cd 100644
--- a/packages/frontend/src/pages/admin/overview.stats.vue
+++ b/packages/frontend/src/pages/admin/overview.stats.vue
@@ -63,7 +63,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { onMounted, ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import MkNumberDiff from '@/components/MkNumberDiff.vue';
 import MkNumber from '@/components/MkNumber.vue';
 import { i18n } from '@/i18n.js';
@@ -78,17 +78,17 @@ const fetching = ref(true);
 
 onMounted(async () => {
 	const [_stats, _onlineUsersCount] = await Promise.all([
-		os.api('stats', {}),
-		os.apiGet('get-online-users-count').then(res => res.count),
+		misskeyApi('stats', {}),
+		misskeyApiGet('get-online-users-count').then(res => res.count),
 	]);
 	stats.value = _stats;
 	onlineUsersCount.value = _onlineUsersCount;
 
-	os.apiGet('charts/users', { limit: 2, span: 'day' }).then(chart => {
+	misskeyApiGet('charts/users', { limit: 2, span: 'day' }).then(chart => {
 		usersComparedToThePrevDay.value = stats.value.originalUsersCount - chart.local.total[1];
 	});
 
-	os.apiGet('charts/notes', { limit: 2, span: 'day' }).then(chart => {
+	misskeyApiGet('charts/notes', { limit: 2, span: 'day' }).then(chart => {
 		notesComparedToThePrevDay.value = stats.value.originalNotesCount - chart.local.total[1];
 	});
 
diff --git a/packages/frontend/src/pages/admin/overview.users.vue b/packages/frontend/src/pages/admin/overview.users.vue
index 79579367c1..530ca0933e 100644
--- a/packages/frontend/src/pages/admin/overview.users.vue
+++ b/packages/frontend/src/pages/admin/overview.users.vue
@@ -18,8 +18,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { ref } from 'vue';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import MkUserCardMini from '@/components/MkUserCardMini.vue';
 import { defaultStore } from '@/store.js';
@@ -28,7 +28,7 @@ const newUsers = ref<Misskey.entities.UserDetailed[] | null>(null);
 const fetching = ref(true);
 
 const fetch = async () => {
-	const _newUsers = await os.api('admin/show-users', {
+	const _newUsers = await misskeyApi('admin/show-users', {
 		limit: 5,
 		sort: '+createdAt',
 		origin: 'local',
diff --git a/packages/frontend/src/pages/admin/overview.vue b/packages/frontend/src/pages/admin/overview.vue
index 2e0791e24f..df058f6952 100644
--- a/packages/frontend/src/pages/admin/overview.vue
+++ b/packages/frontend/src/pages/admin/overview.vue
@@ -79,6 +79,7 @@ import XModerators from './overview.moderators.vue';
 import XHeatmap from './overview.heatmap.vue';
 import type { InstanceForPie } from './overview.pie.vue';
 import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -117,14 +118,14 @@ onMounted(async () => {
 	magicGrid.listen();
 	*/
 
-	os.apiGet('charts/federation', { limit: 2, span: 'day' }).then(chart => {
+	misskeyApiGet('charts/federation', { limit: 2, span: 'day' }).then(chart => {
 		federationPubActive.value = chart.pubActive[0];
 		federationPubActiveDiff.value = chart.pubActive[0] - chart.pubActive[1];
 		federationSubActive.value = chart.subActive[0];
 		federationSubActiveDiff.value = chart.subActive[0] - chart.subActive[1];
 	});
 
-	os.apiGet('federation/stats', { limit: 10 }).then(res => {
+	misskeyApiGet('federation/stats', { limit: 10 }).then(res => {
 		topSubInstancesForPie.value = [
 			...res.topSubInstances.map(x => ({
 				name: x.host,
@@ -149,18 +150,18 @@ onMounted(async () => {
 		];
 	});
 
-	os.api('admin/server-info').then(serverInfoResponse => {
+	misskeyApi('admin/server-info').then(serverInfoResponse => {
 		serverInfo.value = serverInfoResponse;
 	});
 
-	os.api('admin/show-users', {
+	misskeyApi('admin/show-users', {
 		limit: 5,
 		sort: '+createdAt',
 	}).then(res => {
 		newUsers.value = res;
 	});
 
-	os.api('federation/instances', {
+	misskeyApi('federation/instances', {
 		sort: '+latestRequestReceivedAt',
 		limit: 25,
 	}).then(res => {
diff --git a/packages/frontend/src/pages/admin/proxy-account.vue b/packages/frontend/src/pages/admin/proxy-account.vue
index 05e48f7ac1..8b1b3280f3 100644
--- a/packages/frontend/src/pages/admin/proxy-account.vue
+++ b/packages/frontend/src/pages/admin/proxy-account.vue
@@ -28,6 +28,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -36,10 +37,10 @@ const proxyAccount = ref<Misskey.entities.UserDetailed | null>(null);
 const proxyAccountId = ref<string | null>(null);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	proxyAccountId.value = meta.proxyAccountId;
 	if (proxyAccountId.value) {
-		proxyAccount.value = await os.api('users/show', { userId: proxyAccountId.value });
+		proxyAccount.value = await misskeyApi('users/show', { userId: proxyAccountId.value });
 	}
 }
 
diff --git a/packages/frontend/src/pages/admin/queue.chart.vue b/packages/frontend/src/pages/admin/queue.chart.vue
index 72276c1eed..085e5dbb7a 100644
--- a/packages/frontend/src/pages/admin/queue.chart.vue
+++ b/packages/frontend/src/pages/admin/queue.chart.vue
@@ -51,7 +51,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { markRaw, onMounted, onUnmounted, ref, shallowRef } from 'vue';
 import XChart from './queue.chart.chart.vue';
 import number from '@/filters/number.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { i18n } from '@/i18n.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -105,7 +105,7 @@ const onStatsLog = (statsLog) => {
 
 onMounted(() => {
 	if (props.domain === 'inbox' || props.domain === 'deliver') {
-		os.api(`admin/queue/${props.domain}-delayed`).then(result => {
+		misskeyApi(`admin/queue/${props.domain}-delayed`).then(result => {
 			jobs.value = result;
 		});
 	}
diff --git a/packages/frontend/src/pages/admin/relays.vue b/packages/frontend/src/pages/admin/relays.vue
index 0056f2bd9f..6811a8eba5 100644
--- a/packages/frontend/src/pages/admin/relays.vue
+++ b/packages/frontend/src/pages/admin/relays.vue
@@ -29,6 +29,7 @@ import * as Misskey from 'misskey-js';
 import XHeader from './_header_.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -41,7 +42,7 @@ async function addRelay() {
 		placeholder: i18n.ts.inboxUrl,
 	});
 	if (canceled) return;
-	os.api('admin/relays/add', {
+	misskeyApi('admin/relays/add', {
 		inbox,
 	}).then((relay: any) => {
 		refresh();
@@ -54,7 +55,7 @@ async function addRelay() {
 }
 
 function remove(inbox: string) {
-	os.api('admin/relays/remove', {
+	misskeyApi('admin/relays/remove', {
 		inbox,
 	}).then(() => {
 		refresh();
@@ -67,7 +68,7 @@ function remove(inbox: string) {
 }
 
 function refresh() {
-	os.api('admin/relays/list').then(relayList => {
+	misskeyApi('admin/relays/list').then(relayList => {
 		relays.value = relayList;
 	});
 }
diff --git a/packages/frontend/src/pages/admin/roles.edit.vue b/packages/frontend/src/pages/admin/roles.edit.vue
index 585b50aad6..db0acae24a 100644
--- a/packages/frontend/src/pages/admin/roles.edit.vue
+++ b/packages/frontend/src/pages/admin/roles.edit.vue
@@ -28,6 +28,7 @@ import { v4 as uuid } from 'uuid';
 import XHeader from './_header_.vue';
 import XEditor from './roles.editor.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { useRouter } from '@/router.js';
@@ -44,7 +45,7 @@ const role = ref<Misskey.entities.Role | null>(null);
 const data = ref<any>(null);
 
 if (props.id) {
-	role.value = await os.api('admin/roles/show', {
+	role.value = await misskeyApi('admin/roles/show', {
 		roleId: props.id,
 	});
 
diff --git a/packages/frontend/src/pages/admin/roles.role.vue b/packages/frontend/src/pages/admin/roles.role.vue
index 9aa7d8dd3c..d5ce190ef2 100644
--- a/packages/frontend/src/pages/admin/roles.role.vue
+++ b/packages/frontend/src/pages/admin/roles.role.vue
@@ -67,6 +67,7 @@ import XHeader from './_header_.vue';
 import XEditor from './roles.editor.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { useRouter } from '@/router.js';
@@ -92,7 +93,7 @@ const usersPagination = {
 
 const expandedItems = ref([]);
 
-const role = reactive(await os.api('admin/roles/show', {
+const role = reactive(await misskeyApi('admin/roles/show', {
 	roleId: props.id,
 }));
 
diff --git a/packages/frontend/src/pages/admin/roles.vue b/packages/frontend/src/pages/admin/roles.vue
index 3962e04218..f7c4048b23 100644
--- a/packages/frontend/src/pages/admin/roles.vue
+++ b/packages/frontend/src/pages/admin/roles.vue
@@ -233,6 +233,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkRange from '@/components/MkRange.vue';
 import MkRolePreview from '@/components/MkRolePreview.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { instance } from '@/instance.js';
@@ -243,7 +244,7 @@ import { ROLE_POLICIES } from '@/const.js';
 const router = useRouter();
 const baseRoleQ = ref('');
 
-const roles = await os.api('admin/roles/list');
+const roles = await misskeyApi('admin/roles/list');
 
 const policies = reactive<Record<typeof ROLE_POLICIES[number], any>>({});
 for (const ROLE_POLICY of ROLE_POLICIES) {
diff --git a/packages/frontend/src/pages/admin/security.vue b/packages/frontend/src/pages/admin/security.vue
index 8d79dea20f..ec0c6166d0 100644
--- a/packages/frontend/src/pages/admin/security.vue
+++ b/packages/frontend/src/pages/admin/security.vue
@@ -148,6 +148,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -170,7 +171,7 @@ const truemailAuthKey = ref<string | null>(null);
 const bannedEmailDomains = ref<string>('');
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	summalyProxy.value = meta.summalyProxy;
 	enableHcaptcha.value = meta.enableHcaptcha;
 	enableRecaptcha.value = meta.enableRecaptcha;
diff --git a/packages/frontend/src/pages/admin/settings.vue b/packages/frontend/src/pages/admin/settings.vue
index 224028edf3..45375764b7 100644
--- a/packages/frontend/src/pages/admin/settings.vue
+++ b/packages/frontend/src/pages/admin/settings.vue
@@ -158,6 +158,7 @@ import FormSection from '@/components/form/section.vue';
 import FormSplit from '@/components/form/split.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -184,7 +185,7 @@ const perUserListTimelineCacheMax = ref<number>(0);
 const notesPerOneAd = ref<number>(0);
 
 async function init(): Promise<void> {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	name.value = meta.name;
 	shortName.value = meta.shortName;
 	description.value = meta.description;
diff --git a/packages/frontend/src/pages/announcements.vue b/packages/frontend/src/pages/announcements.vue
index 8eca403707..5632bf7caf 100644
--- a/packages/frontend/src/pages/announcements.vue
+++ b/packages/frontend/src/pages/announcements.vue
@@ -45,6 +45,7 @@ import MkPagination from '@/components/MkPagination.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { $i, updateAccount } from '@/account.js';
@@ -84,7 +85,7 @@ async function read(announcement) {
 		a.isRead = true;
 		return a;
 	});
-	os.api('i/read-announcement', { announcementId: announcement.id });
+	misskeyApi('i/read-announcement', { announcementId: announcement.id });
 	updateAccount({
 		unreadAnnouncements: $i!.unreadAnnouncements.filter(a => a.id !== announcement.id),
 	});
diff --git a/packages/frontend/src/pages/antenna-timeline.vue b/packages/frontend/src/pages/antenna-timeline.vue
index cba54790ce..d96ca4208b 100644
--- a/packages/frontend/src/pages/antenna-timeline.vue
+++ b/packages/frontend/src/pages/antenna-timeline.vue
@@ -29,6 +29,7 @@ import * as Misskey from 'misskey-js';
 import MkTimeline from '@/components/MkTimeline.vue';
 import { scroll } from '@/scripts/scroll.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -73,7 +74,7 @@ function focus() {
 }
 
 watch(() => props.antennaId, async () => {
-	antenna.value = await os.api('antennas/show', {
+	antenna.value = await misskeyApi('antennas/show', {
 		antennaId: props.antennaId,
 	});
 }, { immediate: true });
diff --git a/packages/frontend/src/pages/api-console.vue b/packages/frontend/src/pages/api-console.vue
index 0cd4a8dae8..6456965499 100644
--- a/packages/frontend/src/pages/api-console.vue
+++ b/packages/frontend/src/pages/api-console.vue
@@ -41,7 +41,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkInput from '@/components/MkInput.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
 const body = ref('{}');
@@ -51,14 +51,14 @@ const sending = ref(false);
 const res = ref('');
 const withCredential = ref(true);
 
-os.api('endpoints').then(endpointResponse => {
+misskeyApi('endpoints').then(endpointResponse => {
 	endpoints.value = endpointResponse;
 });
 
 function send() {
 	sending.value = true;
 	const requestBody = JSON5.parse(body.value);
-	os.api(endpoint.value as keyof Endpoints, requestBody, requestBody.i || (withCredential.value ? undefined : null)).then(resp => {
+	misskeyApi(endpoint.value as keyof Endpoints, requestBody, requestBody.i || (withCredential.value ? undefined : null)).then(resp => {
 		sending.value = false;
 		res.value = JSON5.stringify(resp, null, 2);
 	}, err => {
@@ -68,7 +68,7 @@ function send() {
 }
 
 function onEndpointChange() {
-	os.api('endpoint', { endpoint: endpoint.value }, withCredential.value ? undefined : null).then(resp => {
+	misskeyApi('endpoint', { endpoint: endpoint.value }, withCredential.value ? undefined : null).then(resp => {
 		const endpointBody = {};
 		for (const p of resp.params) {
 			endpointBody[p.name] =
diff --git a/packages/frontend/src/pages/auth.form.vue b/packages/frontend/src/pages/auth.form.vue
index 8a17e5895d..39a7924f94 100644
--- a/packages/frontend/src/pages/auth.form.vue
+++ b/packages/frontend/src/pages/auth.form.vue
@@ -23,7 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -44,7 +44,7 @@ const name = computed(() => {
 });
 
 function cancel() {
-	os.api('auth/deny', {
+	misskeyApi('auth/deny', {
 		token: props.session.token,
 	}).then(() => {
 		emit('denied');
@@ -52,7 +52,7 @@ function cancel() {
 }
 
 function accept() {
-	os.api('auth/accept', {
+	misskeyApi('auth/accept', {
 		token: props.session.token,
 	}).then(() => {
 		emit('accepted');
diff --git a/packages/frontend/src/pages/auth.vue b/packages/frontend/src/pages/auth.vue
index 1b342647fb..fd38e22ce8 100644
--- a/packages/frontend/src/pages/auth.vue
+++ b/packages/frontend/src/pages/auth.vue
@@ -46,7 +46,7 @@ import { onMounted, ref, computed } from 'vue';
 import * as Misskey from 'misskey-js';
 import XForm from './auth.form.vue';
 import MkSignin from '@/components/MkSignin.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i, login } from '@/account.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -75,13 +75,13 @@ onMounted(async () => {
 	if (!$i) return;
 
 	try {
-		session.value = await os.api('auth/session/show', {
+		session.value = await misskeyApi('auth/session/show', {
 			token: props.token,
 		});
 
 		// 既に連携していた場合
 		if (session.value.app.isAuthorized) {
-			await os.api('auth/accept', {
+			await misskeyApi('auth/accept', {
 				token: session.value.token,
 			});
 			accepted();
diff --git a/packages/frontend/src/pages/avatar-decorations.vue b/packages/frontend/src/pages/avatar-decorations.vue
index 87964ac697..376679fd17 100644
--- a/packages/frontend/src/pages/avatar-decorations.vue
+++ b/packages/frontend/src/pages/avatar-decorations.vue
@@ -40,6 +40,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkInput from '@/components/MkInput.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -63,7 +64,7 @@ function del(avatarDecoration) {
 	}).then(({ canceled }) => {
 		if (canceled) return;
 		avatarDecorations.value = avatarDecorations.value.filter(x => x !== avatarDecoration);
-		os.api('admin/avatar-decorations/delete', avatarDecoration);
+		misskeyApi('admin/avatar-decorations/delete', avatarDecoration);
 	});
 }
 
@@ -77,7 +78,7 @@ async function save(avatarDecoration) {
 }
 
 function load() {
-	os.api('admin/avatar-decorations/list').then(_avatarDecorations => {
+	misskeyApi('admin/avatar-decorations/list').then(_avatarDecorations => {
 		avatarDecorations.value = _avatarDecorations;
 	});
 }
diff --git a/packages/frontend/src/pages/channel-editor.vue b/packages/frontend/src/pages/channel-editor.vue
index fcbd03553d..727778b6e6 100644
--- a/packages/frontend/src/pages/channel-editor.vue
+++ b/packages/frontend/src/pages/channel-editor.vue
@@ -76,6 +76,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkColorInput from '@/components/MkColorInput.vue';
 import { selectFile } from '@/scripts/select-file.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -105,7 +106,7 @@ watch(() => bannerId.value, async () => {
 	if (bannerId.value == null) {
 		bannerUrl.value = null;
 	} else {
-		bannerUrl.value = (await os.api('drive/files/show', {
+		bannerUrl.value = (await misskeyApi('drive/files/show', {
 			fileId: bannerId.value,
 		})).url;
 	}
@@ -114,7 +115,7 @@ watch(() => bannerId.value, async () => {
 async function fetchChannel() {
 	if (props.channelId == null) return;
 
-	channel.value = await os.api('channels/show', {
+	channel.value = await misskeyApi('channels/show', {
 		channelId: props.channelId,
 	});
 
@@ -179,7 +180,7 @@ async function archive() {
 
 	if (canceled) return;
 
-	os.api('channels/update', {
+	misskeyApi('channels/update', {
 		channelId: props.channelId,
 		isArchived: true,
 	}).then(() => {
diff --git a/packages/frontend/src/pages/channel.vue b/packages/frontend/src/pages/channel.vue
index af09189654..667563bd16 100644
--- a/packages/frontend/src/pages/channel.vue
+++ b/packages/frontend/src/pages/channel.vue
@@ -74,6 +74,7 @@ import MkPostForm from '@/components/MkPostForm.vue';
 import MkTimeline from '@/components/MkTimeline.vue';
 import XChannelFollowButton from '@/components/MkChannelFollowButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { $i, iAmModerator } from '@/account.js';
 import { i18n } from '@/i18n.js';
@@ -113,7 +114,7 @@ const featuredPagination = computed(() => ({
 }));
 
 watch(() => props.channelId, async () => {
-	channel.value = await os.api('channels/show', {
+	channel.value = await misskeyApi('channels/show', {
 		channelId: props.channelId,
 	});
 	favorited.value = channel.value.isFavorited ?? false;
diff --git a/packages/frontend/src/pages/clip.vue b/packages/frontend/src/pages/clip.vue
index ec9876f70c..e55e99a6fa 100644
--- a/packages/frontend/src/pages/clip.vue
+++ b/packages/frontend/src/pages/clip.vue
@@ -32,6 +32,7 @@ import MkNotes from '@/components/MkNotes.vue';
 import { $i } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { url } from '@/config.js';
 import MkButton from '@/components/MkButton.vue';
@@ -56,7 +57,7 @@ const pagination = {
 const isOwned = computed<boolean | null>(() => $i && clip.value && ($i.id === clip.value.userId));
 
 watch(() => props.clipId, async () => {
-	clip.value = await os.api('clips/show', {
+	clip.value = await misskeyApi('clips/show', {
 		clipId: props.clipId,
 	});
 	favorited.value = clip.value.isFavorited;
diff --git a/packages/frontend/src/pages/custom-emojis-manager.vue b/packages/frontend/src/pages/custom-emojis-manager.vue
index 011857688d..47594bad4d 100644
--- a/packages/frontend/src/pages/custom-emojis-manager.vue
+++ b/packages/frontend/src/pages/custom-emojis-manager.vue
@@ -82,6 +82,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import FormSplit from '@/components/form/split.vue';
 import { selectFile } from '@/scripts/select-file.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -177,7 +178,7 @@ const menu = (ev: MouseEvent) => {
 		icon: 'ti ti-download',
 		text: i18n.ts.export,
 		action: async () => {
-			os.api('export-custom-emojis', {
+			misskeyApi('export-custom-emojis', {
 			})
 				.then(() => {
 					os.alert({
@@ -196,7 +197,7 @@ const menu = (ev: MouseEvent) => {
 		text: i18n.ts.import,
 		action: async () => {
 			const file = await selectFile(ev.currentTarget ?? ev.target);
-			os.api('admin/emoji/import-zip', {
+			misskeyApi('admin/emoji/import-zip', {
 				fileId: file.id,
 			})
 				.then(() => {
diff --git a/packages/frontend/src/pages/drive.file.info.vue b/packages/frontend/src/pages/drive.file.info.vue
index 1a2fc197f9..4c635028f3 100644
--- a/packages/frontend/src/pages/drive.file.info.vue
+++ b/packages/frontend/src/pages/drive.file.info.vue
@@ -79,6 +79,7 @@ import bytes from '@/filters/bytes.js';
 import { infoImageUrl } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 
 const router = useRouter();
@@ -94,7 +95,7 @@ const isImage = computed(() => file.value?.type.startsWith('image/'));
 async function fetch() {
 	fetching.value = true;
 
-	file.value = await os.api('drive/files/show', {
+	file.value = await misskeyApi('drive/files/show', {
 		fileId: props.fileId,
 	}).catch((err) => {
 		console.error(err);
diff --git a/packages/frontend/src/pages/emoji-edit-dialog.vue b/packages/frontend/src/pages/emoji-edit-dialog.vue
index 474e63cb46..e00953c1ff 100644
--- a/packages/frontend/src/pages/emoji-edit-dialog.vue
+++ b/packages/frontend/src/pages/emoji-edit-dialog.vue
@@ -85,6 +85,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { customEmojiCategories } from '@/custom-emojis.js';
 import MkSwitch from '@/components/MkSwitch.vue';
@@ -107,7 +108,7 @@ const rolesThatCanBeUsedThisEmojiAsReaction = ref<Misskey.entities.Role[]>([]);
 const file = ref<Misskey.entities.DriveFile>();
 
 watch(roleIdsThatCanBeUsedThisEmojiAsReaction, async () => {
-	rolesThatCanBeUsedThisEmojiAsReaction.value = (await Promise.all(roleIdsThatCanBeUsedThisEmojiAsReaction.value.map((id) => os.api('admin/roles/show', { roleId: id }).catch(() => null)))).filter(x => x != null);
+	rolesThatCanBeUsedThisEmojiAsReaction.value = (await Promise.all(roleIdsThatCanBeUsedThisEmojiAsReaction.value.map((id) => misskeyApi('admin/roles/show', { roleId: id }).catch(() => null)))).filter(x => x != null);
 }, { immediate: true });
 
 const imgUrl = computed(() => file.value ? file.value.url : props.emoji ? `/emoji/${props.emoji.name}.webp` : null);
@@ -126,7 +127,7 @@ async function changeImage(ev) {
 }
 
 async function addRole() {
-	const roles = await os.api('admin/roles/list');
+	const roles = await misskeyApi('admin/roles/list');
 	const currentRoleIds = rolesThatCanBeUsedThisEmojiAsReaction.value.map(x => x.id);
 
 	const { canceled, result: role } = await os.select({
@@ -188,7 +189,7 @@ async function del() {
 	});
 	if (canceled) return;
 
-	os.api('admin/emoji/delete', {
+	misskeyApi('admin/emoji/delete', {
 		id: props.emoji.id,
 	}).then(() => {
 		emit('done', {
diff --git a/packages/frontend/src/pages/emojis.emoji.vue b/packages/frontend/src/pages/emojis.emoji.vue
index 9ba9047ca3..ea6947bbba 100644
--- a/packages/frontend/src/pages/emojis.emoji.vue
+++ b/packages/frontend/src/pages/emojis.emoji.vue
@@ -16,6 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { } from 'vue';
 import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 import { i18n } from '@/i18n.js';
 
@@ -43,7 +44,7 @@ function menu(ev) {
 		text: i18n.ts.info,
 		icon: 'ti ti-info-circle',
 		action: () => {
-			os.apiGet('emoji', { name: props.emoji.name }).then(res => {
+			misskeyApiGet('emoji', { name: props.emoji.name }).then(res => {
 				os.alert({
 					type: 'info',
 					text: `Name: ${res.name}\nAliases: ${res.aliases.join(' ')}\nCategory: ${res.category}\nisSensitive: ${res.isSensitive}\nlocalOnly: ${res.localOnly}\nLicense: ${res.license}\nURL: ${res.url}`,
diff --git a/packages/frontend/src/pages/explore.roles.vue b/packages/frontend/src/pages/explore.roles.vue
index d30e107e97..f06bd0840c 100644
--- a/packages/frontend/src/pages/explore.roles.vue
+++ b/packages/frontend/src/pages/explore.roles.vue
@@ -15,11 +15,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkRolePreview from '@/components/MkRolePreview.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const roles = ref<Misskey.entities.Role[] | null>(null);
 
-os.api('roles/list').then(res => {
+misskeyApi('roles/list').then(res => {
 	roles.value = res.filter(x => x.target === 'manual').sort((a, b) => b.displayOrder - a.displayOrder);
 });
 </script>
diff --git a/packages/frontend/src/pages/explore.users.vue b/packages/frontend/src/pages/explore.users.vue
index 73c2a94fc0..440bd0b945 100644
--- a/packages/frontend/src/pages/explore.users.vue
+++ b/packages/frontend/src/pages/explore.users.vue
@@ -68,7 +68,7 @@ import * as Misskey from 'misskey-js';
 import MkUserList from '@/components/MkUserList.vue';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';
 import MkTab from '@/components/MkTab.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -123,14 +123,14 @@ const recentlyRegisteredUsersF = { endpoint: 'users', limit: 10, noPaging: true,
 	sort: '+createdAt',
 } };
 
-os.api('hashtags/list', {
+misskeyApi('hashtags/list', {
 	sort: '+attachedLocalUsers',
 	attachedToLocalUserOnly: true,
 	limit: 30,
 }).then(tags => {
 	tagsLocal.value = tags;
 });
-os.api('hashtags/list', {
+misskeyApi('hashtags/list', {
 	sort: '+attachedRemoteUsers',
 	attachedToRemoteUserOnly: true,
 	limit: 30,
diff --git a/packages/frontend/src/pages/flash/flash-edit.vue b/packages/frontend/src/pages/flash/flash-edit.vue
index 147a381c98..ce077779c8 100644
--- a/packages/frontend/src/pages/flash/flash-edit.vue
+++ b/packages/frontend/src/pages/flash/flash-edit.vue
@@ -38,6 +38,7 @@ import { computed, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkTextarea from '@/components/MkTextarea.vue';
@@ -369,7 +370,7 @@ const flash = ref<Misskey.entities.Flash | null>(null);
 const visibility = ref<Misskey.entities.FlashUpdateRequest['visibility']>('public');
 
 if (props.id) {
-	flash.value = await os.api('flash/show', {
+	flash.value = await misskeyApi('flash/show', {
 		flashId: props.id,
 	});
 }
diff --git a/packages/frontend/src/pages/flash/flash.vue b/packages/frontend/src/pages/flash/flash.vue
index 13e8184c19..bcffb5601a 100644
--- a/packages/frontend/src/pages/flash/flash.vue
+++ b/packages/frontend/src/pages/flash/flash.vue
@@ -62,6 +62,7 @@ import * as Misskey from 'misskey-js';
 import { Interpreter, Parser, values } from '@syuilo/aiscript';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { url } from '@/config.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -84,7 +85,7 @@ const error = ref<any>(null);
 
 function fetchFlash() {
 	flash.value = null;
-	os.api('flash/show', {
+	misskeyApi('flash/show', {
 		flashId: props.id,
 	}).then(_flash => {
 		flash.value = _flash;
diff --git a/packages/frontend/src/pages/follow-requests.vue b/packages/frontend/src/pages/follow-requests.vue
index 51f31b1ca5..902e6a4b51 100644
--- a/packages/frontend/src/pages/follow-requests.vue
+++ b/packages/frontend/src/pages/follow-requests.vue
@@ -41,7 +41,7 @@ import { shallowRef, computed } from 'vue';
 import MkPagination from '@/components/MkPagination.vue';
 import MkButton from '@/components/MkButton.vue';
 import { userPage, acct } from '@/filters/user.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { infoImageUrl } from '@/instance.js';
@@ -54,13 +54,13 @@ const pagination = {
 };
 
 function accept(user) {
-	os.api('following/requests/accept', { userId: user.id }).then(() => {
+	misskeyApi('following/requests/accept', { userId: user.id }).then(() => {
 		paginationComponent.value.reload();
 	});
 }
 
 function reject(user) {
-	os.api('following/requests/reject', { userId: user.id }).then(() => {
+	misskeyApi('following/requests/reject', { userId: user.id }).then(() => {
 		paginationComponent.value.reload();
 	});
 }
diff --git a/packages/frontend/src/pages/follow.vue b/packages/frontend/src/pages/follow.vue
index a0a4a480b5..5a21604080 100644
--- a/packages/frontend/src/pages/follow.vue
+++ b/packages/frontend/src/pages/follow.vue
@@ -12,9 +12,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { mainRouter } from '@/router.js';
 import { i18n } from '@/i18n.js';
-import { defaultStore } from "@/store.js";
+import { defaultStore } from '@/store.js';
 
 async function follow(user): Promise<void> {
 	const { canceled } = await os.confirm({
@@ -42,7 +43,7 @@ if (acct == null) {
 let promise;
 
 if (acct.startsWith('https://')) {
-	promise = os.api('ap/show', {
+	promise = misskeyApi('ap/show', {
 		uri: acct,
 	});
 	promise.then(res => {
@@ -60,7 +61,7 @@ if (acct.startsWith('https://')) {
 		}
 	});
 } else {
-	promise = os.api('users/show', Misskey.acct.parse(acct));
+	promise = misskeyApi('users/show', Misskey.acct.parse(acct));
 	promise.then(user => {
 		follow(user);
 	});
diff --git a/packages/frontend/src/pages/gallery/edit.vue b/packages/frontend/src/pages/gallery/edit.vue
index d711cb4e88..e0c7654531 100644
--- a/packages/frontend/src/pages/gallery/edit.vue
+++ b/packages/frontend/src/pages/gallery/edit.vue
@@ -47,6 +47,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import { selectFiles } from '@/scripts/select-file.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -107,7 +108,7 @@ async function del() {
 }
 
 watch(() => props.postId, () => {
-	init.value = () => props.postId ? os.api('gallery/posts/show', {
+	init.value = () => props.postId ? misskeyApi('gallery/posts/show', {
 		postId: props.postId,
 	}).then(post => {
 		files.value = post.files ?? [];
diff --git a/packages/frontend/src/pages/gallery/post.vue b/packages/frontend/src/pages/gallery/post.vue
index 77af81cec1..f71fe0f260 100644
--- a/packages/frontend/src/pages/gallery/post.vue
+++ b/packages/frontend/src/pages/gallery/post.vue
@@ -66,6 +66,7 @@ import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkContainer from '@/components/MkContainer.vue';
 import MkPagination from '@/components/MkPagination.vue';
 import MkGalleryPostPreview from '@/components/MkGalleryPostPreview.vue';
@@ -97,7 +98,7 @@ const otherPostsPagination = {
 
 function fetchPost() {
 	post.value = null;
-	os.api('gallery/posts/show', {
+	misskeyApi('gallery/posts/show', {
 		postId: props.postId,
 	}).then(_post => {
 		post.value = _post;
diff --git a/packages/frontend/src/pages/install-extentions.vue b/packages/frontend/src/pages/install-extentions.vue
index 8117699849..3815658bd4 100644
--- a/packages/frontend/src/pages/install-extentions.vue
+++ b/packages/frontend/src/pages/install-extentions.vue
@@ -105,6 +105,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { AiScriptPluginMeta, parsePluginMeta, installPlugin } from '@/scripts/install-plugin.js';
 import { parseThemeCode, installTheme } from '@/scripts/install-theme.js';
 import { unisonReload } from '@/scripts/unison-reload.js';
@@ -159,7 +160,7 @@ async function fetch() {
 		uiPhase.value = 'error';
 		return;
 	}
-	const res = await os.api('fetch-external-resources', {
+	const res = await misskeyApi('fetch-external-resources', {
 		url: url.value,
 		hash: hash.value,
 	}).catch((err) => {
diff --git a/packages/frontend/src/pages/instance-info.vue b/packages/frontend/src/pages/instance-info.vue
index 97dc0a8633..c8a0eeeeaa 100644
--- a/packages/frontend/src/pages/instance-info.vue
+++ b/packages/frontend/src/pages/instance-info.vue
@@ -129,6 +129,7 @@ import MkKeyValue from '@/components/MkKeyValue.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import number from '@/filters/number.js';
 import { iAmModerator, iAmAdmin } from '@/account.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -164,9 +165,9 @@ const usersPagination = {
 
 async function fetch(): Promise<void> {
 	if (iAmAdmin) {
-		meta.value = await os.api('admin/meta');
+		meta.value = await misskeyApi('admin/meta');
 	}
-	instance.value = await os.api('federation/show-instance', {
+	instance.value = await misskeyApi('federation/show-instance', {
 		host: props.host,
 	});
 	suspended.value = instance.value?.isSuspended ?? false;
@@ -179,7 +180,7 @@ async function toggleBlock(): Promise<void> {
 	if (!meta.value) throw new Error('No meta?');
 	if (!instance.value) throw new Error('No instance?');
 	const { host } = instance.value;
-	await os.api('admin/update-meta', {
+	await misskeyApi('admin/update-meta', {
 		blockedHosts: isBlocked.value ? meta.value.blockedHosts.concat([host]) : meta.value.blockedHosts.filter(x => x !== host),
 	});
 }
@@ -189,14 +190,14 @@ async function toggleSilenced(): Promise<void> {
 	if (!instance.value) throw new Error('No instance?');
 	const { host } = instance.value;
 	const silencedHosts = meta.value.silencedHosts ?? [];
-	await os.api('admin/update-meta', {
+	await misskeyApi('admin/update-meta', {
 		silencedHosts: isSilenced.value ? silencedHosts.concat([host]) : silencedHosts.filter(x => x !== host),
 	});
 }
 
 async function toggleSuspend(): Promise<void> {
 	if (!instance.value) throw new Error('No instance?');
-	await os.api('admin/federation/update-instance', {
+	await misskeyApi('admin/federation/update-instance', {
 		host: instance.value.host,
 		isSuspended: suspended.value,
 	});
@@ -204,7 +205,7 @@ async function toggleSuspend(): Promise<void> {
 
 function refreshMetadata(): void {
 	if (!instance.value) throw new Error('No instance?');
-	os.api('admin/federation/refresh-remote-instance-metadata', {
+	misskeyApi('admin/federation/refresh-remote-instance-metadata', {
 		host: instance.value.host,
 	});
 	os.alert({
diff --git a/packages/frontend/src/pages/invite.vue b/packages/frontend/src/pages/invite.vue
index 25ce38e0ef..61030741fa 100644
--- a/packages/frontend/src/pages/invite.vue
+++ b/packages/frontend/src/pages/invite.vue
@@ -40,6 +40,7 @@ import { computed, ref, shallowRef } from 'vue';
 import type * as Misskey from 'misskey-js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkButton from '@/components/MkButton.vue';
 import MkPagination, { Paging } from '@/components/MkPagination.vue';
 import MkInviteCode from '@/components/MkInviteCode.vue';
@@ -68,7 +69,7 @@ const resetCycle = computed<null | string>(() => {
 });
 
 async function create() {
-	const ticket = await os.api('invite/create');
+	const ticket = await misskeyApi('invite/create');
 	os.alert({
 		type: 'success',
 		title: i18n.ts.inviteCodeCreated,
@@ -87,7 +88,7 @@ function deleted(id: string) {
 }
 
 async function update() {
-	currentInviteLimit.value = (await os.api('invite/limit')).remaining;
+	currentInviteLimit.value = (await misskeyApi('invite/limit')).remaining;
 }
 
 update();
diff --git a/packages/frontend/src/pages/list.vue b/packages/frontend/src/pages/list.vue
index 936d078848..03db02a350 100644
--- a/packages/frontend/src/pages/list.vue
+++ b/packages/frontend/src/pages/list.vue
@@ -37,6 +37,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { watch, computed, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { userPage } from '@/filters/user.js';
 import { i18n } from '@/i18n.js';
 import MkUserCardMini from '@/components/MkUserCardMini.vue';
@@ -53,12 +54,12 @@ const error = ref();
 const users = ref<Misskey.entities.UserDetailed[]>([]);
 
 function fetchList(): void {
-	os.api('users/lists/show', {
+	misskeyApi('users/lists/show', {
 		listId: props.listId,
 		forPublic: true,
 	}).then(_list => {
 		list.value = _list;
-		os.api('users/show', {
+		misskeyApi('users/show', {
 			userIds: list.value.userIds,
 		}).then(_users => {
 			users.value = _users;
diff --git a/packages/frontend/src/pages/miauth.vue b/packages/frontend/src/pages/miauth.vue
index ad9bea4548..539cb462ad 100644
--- a/packages/frontend/src/pages/miauth.vue
+++ b/packages/frontend/src/pages/miauth.vue
@@ -46,7 +46,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref, computed } from 'vue';
 import MkSignin from '@/components/MkSignin.vue';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i, login } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -65,7 +65,7 @@ const state = ref<string | null>(null);
 
 async function accept(): Promise<void> {
 	state.value = 'waiting';
-	await os.api('miauth/gen-token', {
+	await misskeyApi('miauth/gen-token', {
 		session: props.session,
 		name: props.name,
 		iconUrl: props.icon,
diff --git a/packages/frontend/src/pages/my-antennas/edit.vue b/packages/frontend/src/pages/my-antennas/edit.vue
index 9b3d56ee36..0648f5340f 100644
--- a/packages/frontend/src/pages/my-antennas/edit.vue
+++ b/packages/frontend/src/pages/my-antennas/edit.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import XAntenna from './editor.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -32,7 +32,7 @@ function onAntennaUpdated() {
 	router.push('/my/antennas');
 }
 
-os.api('antennas/show', { antennaId: props.antennaId }).then((antennaResponse) => {
+misskeyApi('antennas/show', { antennaId: props.antennaId }).then((antennaResponse) => {
 	antenna.value = antennaResponse;
 });
 
diff --git a/packages/frontend/src/pages/my-antennas/editor.vue b/packages/frontend/src/pages/my-antennas/editor.vue
index 9b19206d96..45acbb2158 100644
--- a/packages/frontend/src/pages/my-antennas/editor.vue
+++ b/packages/frontend/src/pages/my-antennas/editor.vue
@@ -57,6 +57,7 @@ import MkTextarea from '@/components/MkTextarea.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -84,7 +85,7 @@ const userLists = ref<Misskey.entities.UserList[] | null>(null);
 
 watch(() => src.value, async () => {
 	if (src.value === 'list' && userLists.value === null) {
-		userLists.value = await os.api('users/lists/list');
+		userLists.value = await misskeyApi('users/lists/list');
 	}
 });
 
@@ -119,7 +120,7 @@ async function deleteAntenna() {
 	});
 	if (canceled) return;
 
-	await os.api('antennas/delete', {
+	await misskeyApi('antennas/delete', {
 		antennaId: props.antenna.id,
 	});
 
diff --git a/packages/frontend/src/pages/my-clips/index.vue b/packages/frontend/src/pages/my-clips/index.vue
index bc09e916e3..850222708e 100644
--- a/packages/frontend/src/pages/my-clips/index.vue
+++ b/packages/frontend/src/pages/my-clips/index.vue
@@ -32,6 +32,7 @@ import MkPagination from '@/components/MkPagination.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkClipPreview from '@/components/MkClipPreview.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { clipsCache } from '@/cache.js';
@@ -48,7 +49,7 @@ const favorites = ref<Misskey.entities.Clip[] | null>(null);
 const pagingComponent = shallowRef<InstanceType<typeof MkPagination>>();
 
 watch(tab, async () => {
-	favorites.value = await os.api('clips/my-favorites');
+	favorites.value = await misskeyApi('clips/my-favorites');
 });
 
 async function create() {
diff --git a/packages/frontend/src/pages/my-lists/list.vue b/packages/frontend/src/pages/my-lists/list.vue
index 482fdcd8f2..5798070ad8 100644
--- a/packages/frontend/src/pages/my-lists/list.vue
+++ b/packages/frontend/src/pages/my-lists/list.vue
@@ -57,6 +57,7 @@ import { computed, ref, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { mainRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -93,7 +94,7 @@ const membershipsPagination = {
 };
 
 function fetchList() {
-	os.api('users/lists/show', {
+	misskeyApi('users/lists/show', {
 		listId: props.listId,
 	}).then(_list => {
 		list.value = _list;
@@ -121,7 +122,7 @@ async function removeUser(item, ev) {
 		danger: true,
 		action: async () => {
 			if (!list.value) return;
-			os.api('users/lists/pull', {
+			misskeyApi('users/lists/pull', {
 				listId: list.value.id,
 				userId: item.userId,
 			}).then(() => {
@@ -136,7 +137,7 @@ async function showMembershipMenu(item, ev) {
 		text: item.withReplies ? i18n.ts.hideRepliesToOthersInTimeline : i18n.ts.showRepliesToOthersInTimeline,
 		icon: item.withReplies ? 'ti ti-messages-off' : 'ti ti-messages',
 		action: async () => {
-			os.api('users/lists/update-membership', {
+			misskeyApi('users/lists/update-membership', {
 				listId: list.value.id,
 				userId: item.userId,
 				withReplies: !item.withReplies,
diff --git a/packages/frontend/src/pages/note.vue b/packages/frontend/src/pages/note.vue
index ff1e80aaab..7e353e629c 100644
--- a/packages/frontend/src/pages/note.vue
+++ b/packages/frontend/src/pages/note.vue
@@ -50,7 +50,7 @@ import MkNoteDetailed from '@/components/MkNoteDetailed.vue';
 import MkNotes from '@/components/MkNotes.vue';
 import MkRemoteCaution from '@/components/MkRemoteCaution.vue';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 import { dateString } from '@/filters/date.js';
@@ -90,13 +90,13 @@ function fetchNote() {
 	showPrev.value = false;
 	showNext.value = false;
 	note.value = null;
-	os.api('notes/show', {
+	misskeyApi('notes/show', {
 		noteId: props.noteId,
 	}).then(res => {
 		note.value = res;
 		// 古いノートは被クリップ数をカウントしていないので、2023-10-01以前のものは強制的にnotes/clipsを叩く
 		if (note.value.clippedCount > 0 || new Date(note.value.createdAt).getTime() < new Date('2023-10-01').getTime()) {
-			os.api('notes/clips', {
+			misskeyApi('notes/clips', {
 				noteId: note.value.id,
 			}).then((_clips) => {
 				clips.value = _clips;
diff --git a/packages/frontend/src/pages/page-editor/els/page-editor.el.image.vue b/packages/frontend/src/pages/page-editor/els/page-editor.el.image.vue
index 9d6da653b4..561b0142aa 100644
--- a/packages/frontend/src/pages/page-editor/els/page-editor.el.image.vue
+++ b/packages/frontend/src/pages/page-editor/els/page-editor.el.image.vue
@@ -26,6 +26,7 @@ import * as Misskey from 'misskey-js';
 import XContainer from '../page-editor.container.vue';
 import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -52,7 +53,7 @@ onMounted(async () => {
 	if (props.modelValue.fileId == null) {
 		await choose();
 	} else {
-		os.api('drive/files/show', {
+		misskeyApi('drive/files/show', {
 			fileId: props.modelValue.fileId,
 		}).then(fileResponse => {
 			file.value = fileResponse;
diff --git a/packages/frontend/src/pages/page-editor/els/page-editor.el.note.vue b/packages/frontend/src/pages/page-editor/els/page-editor.el.note.vue
index ea9d52c2be..ebabc98d23 100644
--- a/packages/frontend/src/pages/page-editor/els/page-editor.el.note.vue
+++ b/packages/frontend/src/pages/page-editor/els/page-editor.el.note.vue
@@ -30,7 +30,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkNote from '@/components/MkNote.vue';
 import MkNoteDetailed from '@/components/MkNoteDetailed.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -53,7 +53,7 @@ watch(id, async () => {
 		...props.modelValue,
 		note: id.value,
 	});
-	note.value = await os.api('notes/show', { noteId: id.value });
+	note.value = await misskeyApi('notes/show', { noteId: id.value });
 }, {
 	immediate: true,
 });
diff --git a/packages/frontend/src/pages/page-editor/page-editor.vue b/packages/frontend/src/pages/page-editor/page-editor.vue
index bcfbf5825f..496a8c3274 100644
--- a/packages/frontend/src/pages/page-editor/page-editor.vue
+++ b/packages/frontend/src/pages/page-editor/page-editor.vue
@@ -71,6 +71,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import MkInput from '@/components/MkInput.vue';
 import { url } from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { selectFile } from '@/scripts/select-file.js';
 import { mainRouter } from '@/router.js';
 import { i18n } from '@/i18n.js';
@@ -106,7 +107,7 @@ watch(eyeCatchingImageId, async () => {
 	if (eyeCatchingImageId.value == null) {
 		eyeCatchingImage.value = null;
 	} else {
-		eyeCatchingImage.value = await os.api('drive/files/show', {
+		eyeCatchingImage.value = await misskeyApi('drive/files/show', {
 			fileId: eyeCatchingImageId.value,
 		});
 	}
@@ -149,7 +150,7 @@ function save() {
 
 	if (pageId.value) {
 		options.pageId = pageId.value;
-		os.api('pages/update', options)
+		misskeyApi('pages/update', options)
 			.then(page => {
 				currentName.value = name.value.trim();
 				os.alert({
@@ -158,7 +159,7 @@ function save() {
 				});
 			}).catch(onError);
 	} else {
-		os.api('pages/create', options)
+		misskeyApi('pages/create', options)
 			.then(created => {
 				pageId.value = created.id;
 				currentName.value = name.value.trim();
@@ -177,7 +178,7 @@ function del() {
 		text: i18n.t('removeAreYouSure', { x: title.value.trim() }),
 	}).then(({ canceled }) => {
 		if (canceled) return;
-		os.api('pages/delete', {
+		misskeyApi('pages/delete', {
 			pageId: pageId.value,
 		}).then(() => {
 			os.alert({
@@ -192,7 +193,7 @@ function del() {
 function duplicate() {
 	title.value = title.value + ' - copy';
 	name.value = name.value + '-copy';
-	os.api('pages/create', getSaveOptions()).then(created => {
+	misskeyApi('pages/create', getSaveOptions()).then(created => {
 		pageId.value = created.id;
 		currentName.value = name.value.trim();
 		os.alert({
@@ -236,11 +237,11 @@ function removeEyeCatchingImage() {
 
 async function init() {
 	if (props.initPageId) {
-		page.value = await os.api('pages/show', {
+		page.value = await misskeyApi('pages/show', {
 			pageId: props.initPageId,
 		});
 	} else if (props.initPageName && props.initUser) {
-		page.value = await os.api('pages/show', {
+		page.value = await misskeyApi('pages/show', {
 			name: props.initPageName,
 			username: props.initUser,
 		});
diff --git a/packages/frontend/src/pages/page.vue b/packages/frontend/src/pages/page.vue
index 11c8e15e14..7b4f06d5cf 100644
--- a/packages/frontend/src/pages/page.vue
+++ b/packages/frontend/src/pages/page.vue
@@ -81,6 +81,7 @@ import * as Misskey from 'misskey-js';
 import XPage from '@/components/page/page.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { url } from '@/config.js';
 import MkMediaImage from '@/components/MkMediaImage.vue';
 import MkFollowButton from '@/components/MkFollowButton.vue';
@@ -113,7 +114,7 @@ const path = computed(() => props.username + '/' + props.pageName);
 
 function fetchPage() {
 	page.value = null;
-	os.api('pages/show', {
+	misskeyApi('pages/show', {
 		name: props.pageName,
 		username: props.username,
 	}).then(async _page => {
diff --git a/packages/frontend/src/pages/registry.keys.vue b/packages/frontend/src/pages/registry.keys.vue
index 822a39c2e8..8ae8495de3 100644
--- a/packages/frontend/src/pages/registry.keys.vue
+++ b/packages/frontend/src/pages/registry.keys.vue
@@ -36,6 +36,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { watch, computed, ref } from 'vue';
 import JSON5 from 'json5';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import FormLink from '@/components/form/link.vue';
@@ -54,7 +55,7 @@ const scope = computed(() => props.path ? props.path.split('/') : []);
 const keys = ref<any>(null);
 
 function fetchKeys() {
-	os.api('i/registry/keys-with-type', {
+	misskeyApi('i/registry/keys-with-type', {
 		scope: scope.value,
 		domain: props.domain === '@' ? null : props.domain,
 	}).then(res => {
diff --git a/packages/frontend/src/pages/registry.value.vue b/packages/frontend/src/pages/registry.value.vue
index 243c69eed5..f355550209 100644
--- a/packages/frontend/src/pages/registry.value.vue
+++ b/packages/frontend/src/pages/registry.value.vue
@@ -48,6 +48,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { watch, computed, ref } from 'vue';
 import JSON5 from 'json5';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkButton from '@/components/MkButton.vue';
@@ -68,7 +69,7 @@ const value = ref<any>(null);
 const valueForEditor = ref<string | null>(null);
 
 function fetchValue() {
-	os.api('i/registry/get-detail', {
+	misskeyApi('i/registry/get-detail', {
 		scope: scope.value,
 		key: key.value,
 		domain: props.domain === '@' ? null : props.domain,
diff --git a/packages/frontend/src/pages/registry.vue b/packages/frontend/src/pages/registry.vue
index f45f8922ad..ca54d23b6f 100644
--- a/packages/frontend/src/pages/registry.vue
+++ b/packages/frontend/src/pages/registry.vue
@@ -26,6 +26,7 @@ import { ref, computed } from 'vue';
 import * as Misskey from 'misskey-js';
 import JSON5 from 'json5';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import FormLink from '@/components/form/link.vue';
@@ -35,7 +36,7 @@ import MkButton from '@/components/MkButton.vue';
 const scopesWithDomain = ref<Misskey.entities.IRegistryScopesWithDomainResponse | null>(null);
 
 function fetchScopes() {
-	os.api('i/registry/scopes-with-domain').then(res => {
+	misskeyApi('i/registry/scopes-with-domain').then(res => {
 		scopesWithDomain.value = res;
 	});
 }
diff --git a/packages/frontend/src/pages/role.vue b/packages/frontend/src/pages/role.vue
index 10642ddefe..67f18ee87e 100644
--- a/packages/frontend/src/pages/role.vue
+++ b/packages/frontend/src/pages/role.vue
@@ -38,7 +38,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkUserList from '@/components/MkUserList.vue';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -59,7 +59,7 @@ const error = ref();
 const visible = ref(false);
 
 watch(() => props.role, () => {
-	os.api('roles/show', {
+	misskeyApi('roles/show', {
 		roleId: props.role,
 	}).then(res => {
 		role.value = res;
diff --git a/packages/frontend/src/pages/search.note.vue b/packages/frontend/src/pages/search.note.vue
index 5c0b54e2d9..1b12910a38 100644
--- a/packages/frontend/src/pages/search.note.vue
+++ b/packages/frontend/src/pages/search.note.vue
@@ -49,6 +49,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';
 import { useRouter } from '@/router.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -74,7 +75,7 @@ async function search() {
 	if (query == null || query === '') return;
 
 	if (query.startsWith('https://')) {
-		const promise = os.api('ap/show', {
+		const promise = misskeyApi('ap/show', {
 			uri: query,
 		});
 
diff --git a/packages/frontend/src/pages/search.user.vue b/packages/frontend/src/pages/search.user.vue
index 829c706e0e..5e9048ee57 100644
--- a/packages/frontend/src/pages/search.user.vue
+++ b/packages/frontend/src/pages/search.user.vue
@@ -33,6 +33,7 @@ import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 
 const router = useRouter();
@@ -48,7 +49,7 @@ async function search() {
 	if (query == null || query === '') return;
 
 	if (query.startsWith('https://')) {
-		const promise = os.api('ap/show', {
+		const promise = misskeyApi('ap/show', {
 			uri: query,
 		});
 
diff --git a/packages/frontend/src/pages/settings/accounts.vue b/packages/frontend/src/pages/settings/accounts.vue
index 4320ad7e9e..1c96773b9b 100644
--- a/packages/frontend/src/pages/settings/accounts.vue
+++ b/packages/frontend/src/pages/settings/accounts.vue
@@ -24,6 +24,7 @@ import type * as Misskey from 'misskey-js';
 import FormSuspense from '@/components/form/suspense.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { getAccounts, addAccount as addAccounts, removeAccount as _removeAccount, login, $i } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -36,7 +37,7 @@ const init = async () => {
 	getAccounts().then(accounts => {
 		storedAccounts.value = accounts.filter(x => x.id !== $i!.id);
 
-		return os.api('users/show', {
+		return misskeyApi('users/show', {
 			userIds: storedAccounts.value.map(x => x.id),
 		});
 	}).then(response => {
diff --git a/packages/frontend/src/pages/settings/api.vue b/packages/frontend/src/pages/settings/api.vue
index eee7884aaa..35275c7dcf 100644
--- a/packages/frontend/src/pages/settings/api.vue
+++ b/packages/frontend/src/pages/settings/api.vue
@@ -16,6 +16,7 @@ import { defineAsyncComponent, ref, computed } from 'vue';
 import FormLink from '@/components/form/link.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -25,7 +26,7 @@ function generateToken() {
 	os.popup(defineAsyncComponent(() => import('@/components/MkTokenGenerateWindow.vue')), {}, {
 		done: async result => {
 			const { name, permissions } = result;
-			const { token } = await os.api('miauth/gen-token', {
+			const { token } = await misskeyApi('miauth/gen-token', {
 				session: null,
 				name: name,
 				permission: permissions,
diff --git a/packages/frontend/src/pages/settings/apps.vue b/packages/frontend/src/pages/settings/apps.vue
index 419bcd6fee..4a778d4b38 100644
--- a/packages/frontend/src/pages/settings/apps.vue
+++ b/packages/frontend/src/pages/settings/apps.vue
@@ -47,7 +47,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { ref, computed } from 'vue';
 import FormPagination from '@/components/MkPagination.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkKeyValue from '@/components/MkKeyValue.vue';
@@ -66,7 +66,7 @@ const pagination = {
 };
 
 function revoke(token) {
-	os.api('i/revoke-token', { tokenId: token.id }).then(() => {
+	misskeyApi('i/revoke-token', { tokenId: token.id }).then(() => {
 		list.value.reload();
 	});
 }
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.vue b/packages/frontend/src/pages/settings/avatar-decoration.vue
index eb25f25ec8..70565cc990 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.vue
@@ -50,6 +50,7 @@ import * as Misskey from 'misskey-js';
 import XDecoration from './avatar-decoration.decoration.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { signinRequired } from '@/account.js';
 import MkInfo from '@/components/MkInfo.vue';
@@ -60,7 +61,7 @@ const $i = signinRequired();
 const loading = ref(true);
 const avatarDecorations = ref<Misskey.entities.GetAvatarDecorationsResponse>([]);
 
-os.api('get-avatar-decorations').then(_avatarDecorations => {
+misskeyApi('get-avatar-decorations').then(_avatarDecorations => {
 	avatarDecorations.value = _avatarDecorations;
 	loading.value = false;
 });
diff --git a/packages/frontend/src/pages/settings/drive-cleaner.vue b/packages/frontend/src/pages/settings/drive-cleaner.vue
index 4efcdb31da..496c8d94dc 100644
--- a/packages/frontend/src/pages/settings/drive-cleaner.vue
+++ b/packages/frontend/src/pages/settings/drive-cleaner.vue
@@ -51,6 +51,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, ref, watch } from 'vue';
 import tinycolor from 'tinycolor2';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkPagination from '@/components/MkPagination.vue';
 import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
 import { i18n } from '@/i18n.js';
@@ -94,7 +95,7 @@ watch(sortModeSelect, () => {
 
 function fetchDriveInfo(): void {
 	fetching.value = true;
-	os.api('drive').then(info => {
+	misskeyApi('drive').then(info => {
 		capacity.value = info.capacity;
 		usage.value = info.usage;
 		fetching.value = false;
diff --git a/packages/frontend/src/pages/settings/drive.vue b/packages/frontend/src/pages/settings/drive.vue
index e3a7b8ca80..d4b23f47c6 100644
--- a/packages/frontend/src/pages/settings/drive.vue
+++ b/packages/frontend/src/pages/settings/drive.vue
@@ -66,6 +66,7 @@ import FormSection from '@/components/form/section.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
 import FormSplit from '@/components/form/split.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import bytes from '@/filters/bytes.js';
 import { defaultStore } from '@/store.js';
 import MkChart from '@/components/MkChart.vue';
@@ -95,14 +96,14 @@ const meterStyle = computed(() => {
 
 const keepOriginalUploading = computed(defaultStore.makeGetterSetter('keepOriginalUploading'));
 
-os.api('drive').then(info => {
+misskeyApi('drive').then(info => {
 	capacity.value = info.capacity;
 	usage.value = info.usage;
 	fetching.value = false;
 });
 
 if (defaultStore.state.uploadFolder) {
-	os.api('drive/folders/show', {
+	misskeyApi('drive/folders/show', {
 		folderId: defaultStore.state.uploadFolder,
 	}).then(response => {
 		uploadFolder.value = response;
@@ -114,7 +115,7 @@ function chooseUploadFolder() {
 		defaultStore.set('uploadFolder', folder ? folder.id : null);
 		os.success();
 		if (defaultStore.state.uploadFolder) {
-			uploadFolder.value = await os.api('drive/folders/show', {
+			uploadFolder.value = await misskeyApi('drive/folders/show', {
 				folderId: defaultStore.state.uploadFolder,
 			});
 		} else {
@@ -124,7 +125,7 @@ function chooseUploadFolder() {
 }
 
 function saveProfile() {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		alwaysMarkNsfw: !!alwaysMarkNsfw.value,
 		autoSensitive: !!autoSensitive.value,
 	}).catch(err => {
diff --git a/packages/frontend/src/pages/settings/email.vue b/packages/frontend/src/pages/settings/email.vue
index 015152c50a..c2205dcb0e 100644
--- a/packages/frontend/src/pages/settings/email.vue
+++ b/packages/frontend/src/pages/settings/email.vue
@@ -54,6 +54,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import MkInput from '@/components/MkInput.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { signinRequired } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -64,7 +65,7 @@ const $i = signinRequired();
 const emailAddress = ref($i.email);
 
 const onChangeReceiveAnnouncementEmail = (v) => {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		receiveAnnouncementEmail: v,
 	});
 };
@@ -87,7 +88,7 @@ const emailNotification_follow = ref($i.emailNotificationTypes.includes('follow'
 const emailNotification_receiveFollowRequest = ref($i.emailNotificationTypes.includes('receiveFollowRequest'));
 
 const saveNotificationSettings = () => {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		emailNotificationTypes: [
 			...[emailNotification_mention.value ? 'mention' : null],
 			...[emailNotification_reply.value ? 'reply' : null],
diff --git a/packages/frontend/src/pages/settings/general.vue b/packages/frontend/src/pages/settings/general.vue
index 3e5f5cb8c8..3d5fa66d9f 100644
--- a/packages/frontend/src/pages/settings/general.vue
+++ b/packages/frontend/src/pages/settings/general.vue
@@ -234,6 +234,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import { langs } from '@/config.js';
 import { defaultStore } from '@/store.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { unisonReload } from '@/scripts/unison-reload.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -368,7 +369,7 @@ function removeEmojiIndex(lang: string) {
 }
 
 async function setPinnedList() {
-	const lists = await os.api('users/lists/list');
+	const lists = await misskeyApi('users/lists/list');
 	const { canceled, result: list } = await os.select({
 		title: i18n.ts.selectList,
 		items: lists.map(x => ({
diff --git a/packages/frontend/src/pages/settings/import-export.vue b/packages/frontend/src/pages/settings/import-export.vue
index d2dc3ea8bd..990eff99c1 100644
--- a/packages/frontend/src/pages/settings/import-export.vue
+++ b/packages/frontend/src/pages/settings/import-export.vue
@@ -117,6 +117,7 @@ import FormSection from '@/components/form/section.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { selectFile } from '@/scripts/select-file.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -149,15 +150,15 @@ const onError = (ev) => {
 };
 
 const exportNotes = () => {
-	os.api('i/export-notes', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-notes', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportFavorites = () => {
-	os.api('i/export-favorites', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-favorites', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportFollowing = () => {
-	os.api('i/export-following', {
+	misskeyApi('i/export-following', {
 		excludeMuting: excludeMutingUsers.value,
 		excludeInactive: excludeInactiveUsers.value,
 	})
@@ -165,24 +166,24 @@ const exportFollowing = () => {
 };
 
 const exportBlocking = () => {
-	os.api('i/export-blocking', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-blocking', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportUserLists = () => {
-	os.api('i/export-user-lists', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-user-lists', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportMuting = () => {
-	os.api('i/export-mute', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-mute', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportAntennas = () => {
-	os.api('i/export-antennas', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-antennas', {}).then(onExportSuccess).catch(onError);
 };
 
 const importFollowing = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-following', {
+	misskeyApi('i/import-following', {
 		fileId: file.id,
 		withReplies: withReplies.value,
 	}).then(onImportSuccess).catch(onError);
@@ -190,22 +191,22 @@ const importFollowing = async (ev) => {
 
 const importUserLists = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-user-lists', { fileId: file.id }).then(onImportSuccess).catch(onError);
+	misskeyApi('i/import-user-lists', { fileId: file.id }).then(onImportSuccess).catch(onError);
 };
 
 const importMuting = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-muting', { fileId: file.id }).then(onImportSuccess).catch(onError);
+	misskeyApi('i/import-muting', { fileId: file.id }).then(onImportSuccess).catch(onError);
 };
 
 const importBlocking = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-blocking', { fileId: file.id }).then(onImportSuccess).catch(onError);
+	misskeyApi('i/import-blocking', { fileId: file.id }).then(onImportSuccess).catch(onError);
 };
 
 const importAntennas = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-antennas', { fileId: file.id }).then(onImportSuccess).catch(onError);
+	misskeyApi('i/import-antennas', { fileId: file.id }).then(onImportSuccess).catch(onError);
 };
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/pages/settings/migration.vue b/packages/frontend/src/pages/settings/migration.vue
index d4c51a7c80..2699f0ad63 100644
--- a/packages/frontend/src/pages/settings/migration.vue
+++ b/packages/frontend/src/pages/settings/migration.vue
@@ -66,6 +66,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkUserInfo from '@/components/MkUserInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { signinRequired } from '@/account.js';
@@ -79,13 +80,13 @@ const accountAliases = ref(['']);
 
 async function init() {
 	if ($i.movedTo) {
-		movedTo.value = await os.api('users/show', { userId: $i.movedTo });
+		movedTo.value = await misskeyApi('users/show', { userId: $i.movedTo });
 	} else {
 		moveToAccount.value = '';
 	}
 
 	if ($i.alsoKnownAs && $i.alsoKnownAs.length > 0) {
-		const alsoKnownAs = await os.api('users/show', { userIds: $i.alsoKnownAs });
+		const alsoKnownAs = await misskeyApi('users/show', { userIds: $i.alsoKnownAs });
 		accountAliases.value = (alsoKnownAs && alsoKnownAs.length > 0) ? alsoKnownAs.map(user => `@${Misskey.acct.toString(user)}`) : [''];
 	} else {
 		accountAliases.value = [''];
diff --git a/packages/frontend/src/pages/settings/mute-block.instance-mute.vue b/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
index 8dc3e1acb4..f986be41c3 100644
--- a/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
+++ b/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
@@ -19,8 +19,8 @@ import { ref, watch } from 'vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
 import { signinRequired } from '@/account.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const $i = signinRequired();
@@ -34,7 +34,7 @@ async function save() {
 		.map(el => el.trim())
 		.filter(el => el);
 
-	await os.api('i/update', {
+	await misskeyApi('i/update', {
 		mutedInstances: mutes,
 	});
 
diff --git a/packages/frontend/src/pages/settings/mute-block.vue b/packages/frontend/src/pages/settings/mute-block.vue
index dfb72a87dd..bc31025e59 100644
--- a/packages/frontend/src/pages/settings/mute-block.vue
+++ b/packages/frontend/src/pages/settings/mute-block.vue
@@ -135,6 +135,7 @@ import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkUserCardMini from '@/components/MkUserCardMini.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { infoImageUrl } from '@/instance.js';
 import { signinRequired } from '@/account.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -218,11 +219,11 @@ async function toggleBlockItem(item) {
 }
 
 async function saveMutedWords(mutedWords: (string | string[])[]) {
-	await os.api('i/update', { mutedWords });
+	await misskeyApi('i/update', { mutedWords });
 }
 
 async function saveHardMutedWords(hardMutedWords: (string | string[])[]) {
-	await os.api('i/update', { hardMutedWords });
+	await misskeyApi('i/update', { hardMutedWords });
 }
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/pages/settings/notifications.vue b/packages/frontend/src/pages/settings/notifications.vue
index 1e9515e588..766f33ff65 100644
--- a/packages/frontend/src/pages/settings/notifications.vue
+++ b/packages/frontend/src/pages/settings/notifications.vue
@@ -63,6 +63,7 @@ import MkFolder from '@/components/MkFolder.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
 import { signinRequired } from '@/account.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkPushNotificationAllowButton from '@/components/MkPushNotificationAllowButton.vue';
@@ -75,7 +76,7 @@ const nonConfigurableNotificationTypes = ['note', 'roleAssigned', 'followRequest
 const allowButton = shallowRef<InstanceType<typeof MkPushNotificationAllowButton>>();
 const pushRegistrationInServer = computed(() => allowButton.value?.pushRegistrationInServer);
 const sendReadMessage = computed(() => pushRegistrationInServer.value?.sendReadMessage || false);
-const userLists = await os.api('users/lists/list');
+const userLists = await misskeyApi('users/lists/list');
 
 async function readAllUnreadNotes() {
 	await os.apiWithDialog('i/read-all-unread-notes');
@@ -109,7 +110,7 @@ function onChangeSendReadMessage(v: boolean) {
 }
 
 function testNotification(): void {
-	os.api('notifications/test-notification');
+	misskeyApi('notifications/test-notification');
 }
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/pages/settings/other.vue b/packages/frontend/src/pages/settings/other.vue
index f6f0b8daa4..c4367da1aa 100644
--- a/packages/frontend/src/pages/settings/other.vue
+++ b/packages/frontend/src/pages/settings/other.vue
@@ -93,6 +93,7 @@ import FormInfo from '@/components/MkInfo.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { signout, signinRequired } from '@/account.js';
 import { i18n } from '@/i18n.js';
@@ -148,7 +149,7 @@ async function updateRepliesAll(withReplies: boolean) {
 	});
 	if (canceled) return;
 
-	os.api('following/update-all', { withReplies });
+	misskeyApi('following/update-all', { withReplies });
 }
 
 watch([
diff --git a/packages/frontend/src/pages/settings/preferences-backups.vue b/packages/frontend/src/pages/settings/preferences-backups.vue
index cc6223218f..ea9c5949ab 100644
--- a/packages/frontend/src/pages/settings/preferences-backups.vue
+++ b/packages/frontend/src/pages/settings/preferences-backups.vue
@@ -43,6 +43,7 @@ import FormSection from '@/components/form/section.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { ColdDeviceStorage, defaultStore } from '@/store.js';
 import { unisonReload } from '@/scripts/unison-reload.js';
 import { useStream } from '@/stream.js';
@@ -144,7 +145,7 @@ const connection = $i && useStream().useChannel('main');
 
 const profiles = ref<Record<string, Profile> | null>(null);
 
-os.api('i/registry/get-all', { scope })
+misskeyApi('i/registry/get-all', { scope })
 	.then(res => {
 		profiles.value = res || {};
 	});
diff --git a/packages/frontend/src/pages/settings/privacy.vue b/packages/frontend/src/pages/settings/privacy.vue
index 4f5bc847ac..3698590d51 100644
--- a/packages/frontend/src/pages/settings/privacy.vue
+++ b/packages/frontend/src/pages/settings/privacy.vue
@@ -77,7 +77,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import FormSection from '@/components/form/section.vue';
 import MkFolder from '@/components/MkFolder.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
 import { signinRequired } from '@/account.js';
@@ -101,7 +101,7 @@ const rememberNoteVisibility = computed(defaultStore.makeGetterSetter('rememberN
 const keepCw = computed(defaultStore.makeGetterSetter('keepCw'));
 
 function save() {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		isLocked: !!isLocked.value,
 		autoAcceptFollowed: !!autoAcceptFollowed.value,
 		noCrawle: !!noCrawle.value,
diff --git a/packages/frontend/src/pages/settings/security.vue b/packages/frontend/src/pages/settings/security.vue
index 3f85f27e47..0787e0c3a3 100644
--- a/packages/frontend/src/pages/settings/security.vue
+++ b/packages/frontend/src/pages/settings/security.vue
@@ -47,6 +47,7 @@ import FormSlot from '@/components/form/slot.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkPagination from '@/components/MkPagination.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -92,7 +93,7 @@ async function regenerateToken() {
 	const auth = await os.authenticateDialog();
 	if (auth.canceled) return;
 
-	os.api('i/regenerate-token', {
+	misskeyApi('i/regenerate-token', {
 		password: auth.result.password,
 		token: auth.result.token,
 	});
diff --git a/packages/frontend/src/pages/settings/sounds.sound.vue b/packages/frontend/src/pages/settings/sounds.sound.vue
index 2f4cd1be2c..57bafce0ac 100644
--- a/packages/frontend/src/pages/settings/sounds.sound.vue
+++ b/packages/frontend/src/pages/settings/sounds.sound.vue
@@ -32,6 +32,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkRange from '@/components/MkRange.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { playFile, soundsTypes, getSoundDuration } from '@/scripts/sound.js';
 import { selectFile } from '@/scripts/select-file.js';
 
@@ -53,7 +54,7 @@ const fileName = ref<string>('');
 const volume = ref(props.volume);
 
 if (type.value === '_driveFile_' && fileId.value) {
-	const apiRes = await os.api('drive/files/show', {
+	const apiRes = await misskeyApi('drive/files/show', {
 		fileId: fileId.value,
 	});
 	fileName.value = apiRes.name;
diff --git a/packages/frontend/src/pages/settings/statusbar.vue b/packages/frontend/src/pages/settings/statusbar.vue
index 294da80bb5..b347a869f4 100644
--- a/packages/frontend/src/pages/settings/statusbar.vue
+++ b/packages/frontend/src/pages/settings/statusbar.vue
@@ -21,7 +21,7 @@ import { v4 as uuid } from 'uuid';
 import XStatusbar from './statusbar.statusbar.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -31,7 +31,7 @@ const statusbars = defaultStore.reactiveState.statusbars;
 const userLists = ref<Misskey.entities.UserList[] | null>(null);
 
 onMounted(() => {
-	os.api('users/lists/list').then(res => {
+	misskeyApi('users/lists/list').then(res => {
 		userLists.value = res;
 	});
 });
diff --git a/packages/frontend/src/pages/settings/webhook.edit.vue b/packages/frontend/src/pages/settings/webhook.edit.vue
index c1695dc6a5..9eb344bd46 100644
--- a/packages/frontend/src/pages/settings/webhook.edit.vue
+++ b/packages/frontend/src/pages/settings/webhook.edit.vue
@@ -48,6 +48,7 @@ import FormSection from '@/components/form/section.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { useRouter } from '@/router.js';
@@ -58,7 +59,7 @@ const props = defineProps<{
 	webhookId: string;
 }>();
 
-const webhook = await os.api('i/webhooks/show', {
+const webhook = await misskeyApi('i/webhooks/show', {
 	webhookId: props.webhookId,
 });
 
diff --git a/packages/frontend/src/pages/share.vue b/packages/frontend/src/pages/share.vue
index cb5acf3afa..030cfbb905 100644
--- a/packages/frontend/src/pages/share.vue
+++ b/packages/frontend/src/pages/share.vue
@@ -37,6 +37,7 @@ import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import MkPostForm from '@/components/MkPostForm.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { postMessageToParentWindow } from '@/scripts/post-message.js';
 import { i18n } from '@/i18n.js';
@@ -76,7 +77,7 @@ async function init() {
 			]
 			// TypeScriptの指示通りに変換する
 				.map(q => 'username' in q ? { username: q.username, host: q.host === null ? undefined : q.host } : q)
-				.map(q => os.api('users/show', q)
+				.map(q => misskeyApi('users/show', q)
 					.then(user => {
 						visibleUsers.value.push(user);
 					}, () => {
@@ -91,11 +92,11 @@ async function init() {
 		const replyId = urlParams.get('replyId');
 		const replyUri = urlParams.get('replyUri');
 		if (replyId) {
-			reply.value = await os.api('notes/show', {
+			reply.value = await misskeyApi('notes/show', {
 				noteId: replyId,
 			});
 		} else if (replyUri) {
-			const obj = await os.api('ap/show', {
+			const obj = await misskeyApi('ap/show', {
 				uri: replyUri,
 			});
 			if (obj.type === 'Note') {
@@ -108,11 +109,11 @@ async function init() {
 		const renoteId = urlParams.get('renoteId');
 		const renoteUri = urlParams.get('renoteUri');
 		if (renoteId) {
-			renote.value = await os.api('notes/show', {
+			renote.value = await misskeyApi('notes/show', {
 				noteId: renoteId,
 			});
 		} else if (renoteUri) {
-			const obj = await os.api('ap/show', {
+			const obj = await misskeyApi('ap/show', {
 				uri: renoteUri,
 			});
 			if (obj.type === 'Note') {
@@ -126,7 +127,7 @@ async function init() {
 		if (fileIds) {
 			await Promise.all(
 				fileIds.split(',')
-					.map(fileId => os.api('drive/files/show', { fileId })
+					.map(fileId => misskeyApi('drive/files/show', { fileId })
 						.then(file => {
 							files.value.push(file);
 						}, () => {
diff --git a/packages/frontend/src/pages/signup-complete.vue b/packages/frontend/src/pages/signup-complete.vue
index 638c7e8773..3f007b7afc 100644
--- a/packages/frontend/src/pages/signup-complete.vue
+++ b/packages/frontend/src/pages/signup-complete.vue
@@ -31,6 +31,7 @@ import MkAnimBg from '@/components/MkAnimBg.vue';
 import { login } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const submitting = ref(false);
 
@@ -42,7 +43,7 @@ function submit() {
 	if (submitting.value) return;
 	submitting.value = true;
 
-	os.api('signup-pending', {
+	misskeyApi('signup-pending', {
 		code: props.code,
 	}).then(res => {
 		return login(res.i, '/');
diff --git a/packages/frontend/src/pages/timeline.vue b/packages/frontend/src/pages/timeline.vue
index 1b24f98bdb..6fe8963f51 100644
--- a/packages/frontend/src/pages/timeline.vue
+++ b/packages/frontend/src/pages/timeline.vue
@@ -40,6 +40,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import MkPostForm from '@/components/MkPostForm.vue';
 import { scroll } from '@/scripts/scroll.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
 import { instance } from '@/instance.js';
@@ -122,7 +123,7 @@ async function chooseAntenna(ev: MouseEvent): Promise<void> {
 }
 
 async function chooseChannel(ev: MouseEvent): Promise<void> {
-	const channels = await os.api('channels/my-favorites', {
+	const channels = await misskeyApi('channels/my-favorites', {
 		limit: 100,
 	});
 	const items: MenuItem[] = [
diff --git a/packages/frontend/src/pages/user-list-timeline.vue b/packages/frontend/src/pages/user-list-timeline.vue
index ba22d784c7..19c376c77b 100644
--- a/packages/frontend/src/pages/user-list-timeline.vue
+++ b/packages/frontend/src/pages/user-list-timeline.vue
@@ -28,7 +28,7 @@ import { computed, watch, ref, shallowRef } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkTimeline from '@/components/MkTimeline.vue';
 import { scroll } from '@/scripts/scroll.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -45,7 +45,7 @@ const tlEl = shallowRef<InstanceType<typeof MkTimeline>>();
 const rootEl = shallowRef<HTMLElement>();
 
 watch(() => props.listId, async () => {
-	list.value = await os.api('users/lists/show', {
+	list.value = await misskeyApi('users/lists/show', {
 		listId: props.listId,
 	});
 }, { immediate: true });
diff --git a/packages/frontend/src/pages/user/activity.following.vue b/packages/frontend/src/pages/user/activity.following.vue
index bd1159cb32..798b640647 100644
--- a/packages/frontend/src/pages/user/activity.following.vue
+++ b/packages/frontend/src/pages/user/activity.following.vue
@@ -18,7 +18,7 @@ import { onMounted, shallowRef, ref } from 'vue';
 import { Chart, ChartDataset } from 'chart.js';
 import * as Misskey from 'misskey-js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -61,7 +61,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/user/following', { userId: props.user.id, limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/user/following', { userId: props.user.id, limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/pages/user/activity.heatmap.vue b/packages/frontend/src/pages/user/activity.heatmap.vue
index ff46db9653..ea3276a890 100644
--- a/packages/frontend/src/pages/user/activity.heatmap.vue
+++ b/packages/frontend/src/pages/user/activity.heatmap.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, nextTick, watch, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { alpha } from '@/scripts/color.js';
@@ -74,7 +74,7 @@ async function renderChart() {
 	let values;
 
 	if (props.src === 'notes') {
-		const raw = await os.api('charts/user/notes', { userId: props.user.id, limit: chartLimit, span: 'day' });
+		const raw = await misskeyApi('charts/user/notes', { userId: props.user.id, limit: chartLimit, span: 'day' });
 		values = raw.inc;
 	}
 
diff --git a/packages/frontend/src/pages/user/activity.notes.vue b/packages/frontend/src/pages/user/activity.notes.vue
index dd035641d8..a55d98d989 100644
--- a/packages/frontend/src/pages/user/activity.notes.vue
+++ b/packages/frontend/src/pages/user/activity.notes.vue
@@ -18,7 +18,7 @@ import { onMounted, shallowRef, ref } from 'vue';
 import { Chart, ChartDataset } from 'chart.js';
 import * as Misskey from 'misskey-js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -61,7 +61,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/user/notes', { userId: props.user.id, limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/user/notes', { userId: props.user.id, limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/pages/user/activity.pv.vue b/packages/frontend/src/pages/user/activity.pv.vue
index 2dd9a1570f..fe9acd322c 100644
--- a/packages/frontend/src/pages/user/activity.pv.vue
+++ b/packages/frontend/src/pages/user/activity.pv.vue
@@ -18,7 +18,7 @@ import { onMounted, shallowRef, ref } from 'vue';
 import { Chart, ChartDataset } from 'chart.js';
 import * as Misskey from 'misskey-js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -61,7 +61,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/user/pv', { userId: props.user.id, limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/user/pv', { userId: props.user.id, limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/pages/user/followers.vue b/packages/frontend/src/pages/user/followers.vue
index a4d516a1de..23c7fc0494 100644
--- a/packages/frontend/src/pages/user/followers.vue
+++ b/packages/frontend/src/pages/user/followers.vue
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import XFollowList from './follow-list.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 
@@ -37,7 +37,7 @@ const error = ref<any>(null);
 function fetchUser(): void {
 	if (props.acct == null) return;
 	user.value = null;
-	os.api('users/show', Misskey.acct.parse(props.acct)).then(u => {
+	misskeyApi('users/show', Misskey.acct.parse(props.acct)).then(u => {
 		user.value = u;
 	}).catch(err => {
 		error.value = err;
diff --git a/packages/frontend/src/pages/user/following.vue b/packages/frontend/src/pages/user/following.vue
index 99cb098d65..d1dc935884 100644
--- a/packages/frontend/src/pages/user/following.vue
+++ b/packages/frontend/src/pages/user/following.vue
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import XFollowList from './follow-list.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 
@@ -37,7 +37,7 @@ const error = ref<any>(null);
 function fetchUser(): void {
 	if (props.acct == null) return;
 	user.value = null;
-	os.api('users/show', Misskey.acct.parse(props.acct)).then(u => {
+	misskeyApi('users/show', Misskey.acct.parse(props.acct)).then(u => {
 		user.value = u;
 	}).catch(err => {
 		error.value = err;
diff --git a/packages/frontend/src/pages/user/home.vue b/packages/frontend/src/pages/user/home.vue
index 2a9eb5f8e4..5258165d7c 100644
--- a/packages/frontend/src/pages/user/home.vue
+++ b/packages/frontend/src/pages/user/home.vue
@@ -171,7 +171,7 @@ import { i18n } from '@/i18n.js';
 import { $i, iAmModerator } from '@/account.js';
 import { dateString } from '@/filters/date.js';
 import { confetti } from '@/scripts/confetti.js';
-import { api } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { isFollowingVisibleForMe, isFollowersVisibleForMe } from '@/scripts/isFfVisibleForMe.js';
 
 function calcAge(birthdate: string): number {
@@ -215,7 +215,7 @@ const moderationNote = ref(props.user.moderationNote);
 const editModerationNote = ref(false);
 
 watch(moderationNote, async () => {
-	await os.api('admin/update-user-note', { userId: props.user.id, text: moderationNote.value });
+	await misskeyApi('admin/update-user-note', { userId: props.user.id, text: moderationNote.value });
 });
 
 const style = computed(() => {
@@ -266,7 +266,7 @@ function adjustMemoTextarea() {
 }
 
 async function updateMemo() {
-	await api('users/update-memo', {
+	await misskeyApi('users/update-memo', {
 		memo: memoDraft.value,
 		userId: props.user.id,
 	});
diff --git a/packages/frontend/src/pages/user/index.files.vue b/packages/frontend/src/pages/user/index.files.vue
index 32561e6b0b..506d324683 100644
--- a/packages/frontend/src/pages/user/index.files.vue
+++ b/packages/frontend/src/pages/user/index.files.vue
@@ -37,7 +37,7 @@ import { onMounted, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { getStaticImageUrl } from '@/scripts/media-proxy.js';
 import { notePage } from '@/filters/note.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkContainer from '@/components/MkContainer.vue';
 import ImgWithBlurhash from '@/components/MkImgWithBlurhash.vue';
 import { defaultStore } from '@/store.js';
@@ -61,7 +61,7 @@ function thumbnail(image: Misskey.entities.DriveFile): string {
 }
 
 onMounted(() => {
-	os.api('users/notes', {
+	misskeyApi('users/notes', {
 		userId: props.user.id,
 		withFiles: true,
 		limit: 15,
diff --git a/packages/frontend/src/pages/user/index.vue b/packages/frontend/src/pages/user/index.vue
index 1e9a860974..95869e7b8c 100644
--- a/packages/frontend/src/pages/user/index.vue
+++ b/packages/frontend/src/pages/user/index.vue
@@ -32,7 +32,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { defineAsyncComponent, computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { acct as getAcct } from '@/filters/user.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 import { $i } from '@/account.js';
@@ -63,7 +63,7 @@ const error = ref<any>(null);
 function fetchUser(): void {
 	if (props.acct == null) return;
 	user.value = null;
-	os.api('users/show', Misskey.acct.parse(props.acct)).then(u => {
+	misskeyApi('users/show', Misskey.acct.parse(props.acct)).then(u => {
 		user.value = u;
 	}).catch(err => {
 		error.value = err;
diff --git a/packages/frontend/src/pages/welcome.entrance.a.vue b/packages/frontend/src/pages/welcome.entrance.a.vue
index 3ad34355f5..2bb9746bd6 100644
--- a/packages/frontend/src/pages/welcome.entrance.a.vue
+++ b/packages/frontend/src/pages/welcome.entrance.a.vue
@@ -39,7 +39,7 @@ import XTimeline from './welcome.timeline.vue';
 import MarqueeText from '@/components/MkMarquee.vue';
 import MkFeaturedPhotos from '@/components/MkFeaturedPhotos.vue';
 import misskeysvg from '/client-assets/misskey.svg';
-import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import MkVisitorDashboard from '@/components/MkVisitorDashboard.vue';
 import { getProxiedImageUrl } from '@/scripts/media-proxy.js';
 
@@ -53,11 +53,11 @@ function getInstanceIcon(instance: Misskey.entities.FederationInstance): string
 	return getProxiedImageUrl(instance.iconUrl, 'preview');
 }
 
-os.api('meta', { detail: true }).then(_meta => {
+misskeyApi('meta', { detail: true }).then(_meta => {
 	meta.value = _meta;
 });
 
-os.apiGet('federation/instances', {
+misskeyApiGet('federation/instances', {
 	sort: '+pubSub',
 	limit: 20,
 }).then(_instances => {
diff --git a/packages/frontend/src/pages/welcome.setup.vue b/packages/frontend/src/pages/welcome.setup.vue
index 61b86f993d..40187b861e 100644
--- a/packages/frontend/src/pages/welcome.setup.vue
+++ b/packages/frontend/src/pages/welcome.setup.vue
@@ -40,6 +40,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkInput from '@/components/MkInput.vue';
 import { host, version } from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { login } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import MkAnimBg from '@/components/MkAnimBg.vue';
@@ -52,7 +53,7 @@ function submit() {
 	if (submitting.value) return;
 	submitting.value = true;
 
-	os.api('admin/accounts/create', {
+	misskeyApi('admin/accounts/create', {
 		username: username.value,
 		password: password.value,
 	}).then(res => {
diff --git a/packages/frontend/src/pages/welcome.timeline.vue b/packages/frontend/src/pages/welcome.timeline.vue
index 92be80228a..07c98571e4 100644
--- a/packages/frontend/src/pages/welcome.timeline.vue
+++ b/packages/frontend/src/pages/welcome.timeline.vue
@@ -32,14 +32,14 @@ import { onUpdated, ref, shallowRef } from 'vue';
 import MkReactionsViewer from '@/components/MkReactionsViewer.vue';
 import MkMediaList from '@/components/MkMediaList.vue';
 import MkPoll from '@/components/MkPoll.vue';
-import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import { getScrollContainer } from '@/scripts/scroll.js';
 
 const notes = ref<Misskey.entities.Note[]>([]);
 const isScrolling = ref(false);
 const scrollEl = shallowRef<HTMLElement>();
 
-os.apiGet('notes/featured').then(_notes => {
+misskeyApiGet('notes/featured').then(_notes => {
 	notes.value = _notes;
 });
 
diff --git a/packages/frontend/src/pages/welcome.vue b/packages/frontend/src/pages/welcome.vue
index 7f0af1b83e..225ab91514 100644
--- a/packages/frontend/src/pages/welcome.vue
+++ b/packages/frontend/src/pages/welcome.vue
@@ -16,12 +16,12 @@ import * as Misskey from 'misskey-js';
 import XSetup from './welcome.setup.vue';
 import XEntrance from './welcome.entrance.a.vue';
 import { instanceName } from '@/config.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
 const meta = ref<Misskey.entities.MetaResponse | null>(null);
 
-os.api('meta', { detail: true }).then(res => {
+misskeyApi('meta', { detail: true }).then(res => {
 	meta.value = res;
 });