Merge branch 'develop' into pizzax-indexeddb

60 files changed, 819 insertions, 1406 deletions

diff --git a/packages/backend/src/server/api/endpoints/admin/abuse-user-reports.ts b/packages/backend/src/server/api/endpoints/admin/abuse-user-reports.ts
index ed7b146d03..333746f423 100644
--- a/packages/backend/src/server/api/endpoints/admin/abuse-user-reports.ts
+++ b/packages/backend/src/server/api/endpoints/admin/abuse-user-reports.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import { AbuseUserReports } from '@/models/index';
-import { makePaginationQuery } from '../../common/make-pagination-query';
+import define from '../../define.js';
+import { AbuseUserReports } from '@/models/index.js';
+import { makePaginationQuery } from '../../common/make-pagination-query.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,49 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-
-		state: {
-			validator: $.optional.nullable.str,
-			default: null,
-		},
-
-		reporterOrigin: {
-			validator: $.optional.str.or([
-				'combined',
-				'local',
-				'remote',
-			]),
-			default: 'combined',
-		},
-
-		targetUserOrigin: {
-			validator: $.optional.str.or([
-				'combined',
-				'local',
-				'remote',
-			]),
-			default: 'combined',
-		},
-
-		forwarded: {
-			validator: $.optional.bool,
-			default: false,
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -115,8 +70,22 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+		state: { type: 'string', nullable: true, default: null },
+		reporterOrigin: { type: 'string', enum: ['combined', 'local', 'remote'], default: "combined" },
+		targetUserOrigin: { type: 'string', enum: ['combined', 'local', 'remote'], default: "combined" },
+		forwarded: { type: 'boolean', default: false },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const query = makePaginationQuery(AbuseUserReports.createQueryBuilder('report'), ps.sinceId, ps.untilId);
 
 	switch (ps.state) {
@@ -134,7 +103,7 @@ export default define(meta, async (ps) => {
 		case 'remote': query.andWhere('report.targetUserHost IS NOT NULL'); break;
 	}
 
-	const reports = await query.take(ps.limit!).getMany();
+	const reports = await query.take(ps.limit).getMany();
 
 	return await AbuseUserReports.packMany(reports);
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/accounts/create.ts b/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
index 20f1232959..2820c7993d 100644
--- a/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
@@ -1,20 +1,10 @@
-import define from '../../../define';
-import { Users } from '@/models/index';
-import { signup } from '../../../common/signup';
+import define from '../../../define.js';
+import { Users } from '@/models/index.js';
+import { signup } from '../../../common/signup.js';
 
 export const meta = {
 	tags: ['admin'],
 
-	params: {
-		username: {
-			validator: Users.validateLocalUsername,
-		},
-
-		password: {
-			validator: Users.validatePassword,
-		},
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -28,8 +18,17 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		username: Users.localUsernameSchema,
+		password: Users.passwordSchema,
+	},
+	required: ['username', 'password'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, _me) => {
+export default define(meta, paramDef, async (ps, _me) => {
 	const me = _me ? await Users.findOneOrFail(_me.id) : null;
 	const noUsers = (await Users.count({
 		host: null,
diff --git a/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts b/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
index 1701c1e3a7..01754ec8f3 100644
--- a/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
+++ b/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
@@ -1,26 +1,26 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Users } from '@/models/index';
-import { doPostSuspend } from '@/services/suspend-user';
-import { publishUserEvent } from '@/services/stream';
-import { createDeleteAccountJob } from '@/queue';
-import { ID } from '@/misc/cafy-id';
+import define from '../../../define.js';
+import { Users } from '@/models/index.js';
+import { doPostSuspend } from '@/services/suspend-user.js';
+import { publishUserEvent } from '@/services/stream.js';
+import { createDeleteAccountJob } from '@/queue/index.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['userId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const user = await Users.findOne(ps.userId);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/ad/create.ts b/packages/backend/src/server/api/endpoints/admin/ad/create.ts
index 00ad2012fe..ab2c50b50f 100644
--- a/packages/backend/src/server/api/endpoints/admin/ad/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/ad/create.ts
@@ -1,41 +1,30 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Ads } from '@/models/index';
-import { genId } from '@/misc/gen-id';
+import define from '../../../define.js';
+import { Ads } from '@/models/index.js';
+import { genId } from '@/misc/gen-id.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		url: {
-			validator: $.str.min(1),
-		},
-		memo: {
-			validator: $.str,
-		},
-		place: {
-			validator: $.str,
-		},
-		priority: {
-			validator: $.str,
-		},
-		ratio: {
-			validator: $.num.int().min(0),
-		},
-		expiresAt: {
-			validator: $.num.int(),
-		},
-		imageUrl: {
-			validator: $.str.min(1),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		url: { type: 'string', minLength: 1 },
+		memo: { type: 'string' },
+		place: { type: 'string' },
+		priority: { type: 'string' },
+		ratio: { type: 'integer' },
+		expiresAt: { type: 'integer' },
+		imageUrl: { type: 'string', minLength: 1 },
 	},
+	required: ['url', 'memo', 'place', 'priority', 'ratio', 'expiresAt', 'imageUrl'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	await Ads.insert({
 		id: genId(),
 		createdAt: new Date(),
diff --git a/packages/backend/src/server/api/endpoints/admin/ad/delete.ts b/packages/backend/src/server/api/endpoints/admin/ad/delete.ts
index c0124e2484..3663d974c5 100644
--- a/packages/backend/src/server/api/endpoints/admin/ad/delete.ts
+++ b/packages/backend/src/server/api/endpoints/admin/ad/delete.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Ads } from '@/models/index';
-import { ApiError } from '../../../error';
+import define from '../../../define.js';
+import { Ads } from '@/models/index.js';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,12 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		id: {
-			validator: $.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchAd: {
 			message: 'No such ad.',
@@ -25,8 +17,16 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		id: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['id'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const ad = await Ads.findOne(ps.id);
 
 	if (ad == null) throw new ApiError(meta.errors.noSuchAd);
diff --git a/packages/backend/src/server/api/endpoints/admin/ad/list.ts b/packages/backend/src/server/api/endpoints/admin/ad/list.ts
index 7a83637f3b..74f154f272 100644
--- a/packages/backend/src/server/api/endpoints/admin/ad/list.ts
+++ b/packages/backend/src/server/api/endpoints/admin/ad/list.ts
@@ -1,37 +1,30 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../../define';
-import { Ads } from '@/models/index';
-import { makePaginationQuery } from '../../../common/make-pagination-query';
+import define from '../../../define.js';
+import { Ads } from '@/models/index.js';
+import { makePaginationQuery } from '../../../common/make-pagination-query.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
 	},
+	required: [],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const query = makePaginationQuery(Ads.createQueryBuilder('ad'), ps.sinceId, ps.untilId)
 		.andWhere('ad.expiresAt > :now', { now: new Date() });
 
-	const ads = await query.take(ps.limit!).getMany();
+	const ads = await query.take(ps.limit).getMany();
 
 	return ads;
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/ad/update.ts b/packages/backend/src/server/api/endpoints/admin/ad/update.ts
index c2b09ab9cf..89c421db66 100644
--- a/packages/backend/src/server/api/endpoints/admin/ad/update.ts
+++ b/packages/backend/src/server/api/endpoints/admin/ad/update.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Ads } from '@/models/index';
-import { ApiError } from '../../../error';
+import define from '../../../define.js';
+import { Ads } from '@/models/index.js';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,33 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		id: {
-			validator: $.type(ID),
-		},
-		memo: {
-			validator: $.str,
-		},
-		url: {
-			validator: $.str.min(1),
-		},
-		imageUrl: {
-			validator: $.str.min(1),
-		},
-		place: {
-			validator: $.str,
-		},
-		priority: {
-			validator: $.str,
-		},
-		ratio: {
-			validator: $.num.int().min(0),
-		},
-		expiresAt: {
-			validator: $.num.int(),
-		},
-	},
-
 	errors: {
 		noSuchAd: {
 			message: 'No such ad.',
@@ -46,8 +17,23 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		id: { type: 'string', format: 'misskey:id' },
+		memo: { type: 'string' },
+		url: { type: 'string', minLength: 1 },
+		imageUrl: { type: 'string', minLength: 1 },
+		place: { type: 'string' },
+		priority: { type: 'string' },
+		ratio: { type: 'integer' },
+		expiresAt: { type: 'integer' },
+	},
+	required: ['id', 'memo', 'url', 'imageUrl', 'place', 'priority', 'ratio', 'expiresAt'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const ad = await Ads.findOne(ps.id);
 
 	if (ad == null) throw new ApiError(meta.errors.noSuchAd);
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/create.ts b/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
index 24c4caa37d..41570078d4 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
@@ -1,7 +1,6 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Announcements } from '@/models/index';
-import { genId } from '@/misc/gen-id';
+import define from '../../../define.js';
+import { Announcements } from '@/models/index.js';
+import { genId } from '@/misc/gen-id.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -9,18 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		title: {
-			validator: $.str.min(1),
-		},
-		text: {
-			validator: $.str.min(1),
-		},
-		imageUrl: {
-			validator: $.nullable.str.min(1),
-		},
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -57,8 +44,18 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		title: { type: 'string', minLength: 1 },
+		text: { type: 'string', minLength: 1 },
+		imageUrl: { type: 'string', nullable: true, minLength: 1 },
+	},
+	required: ['title', 'text', 'imageUrl'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const announcement = await Announcements.insert({
 		id: genId(),
 		createdAt: new Date(),
@@ -68,5 +65,5 @@ export default define(meta, async (ps) => {
 		imageUrl: ps.imageUrl,
 	}).then(x => Announcements.findOneOrFail(x.identifiers[0]));
 
-	return announcement;
+	return Object.assign({}, announcement, { createdAt: announcement.createdAt.toISOString(), updatedAt: null });
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/delete.ts b/packages/backend/src/server/api/endpoints/admin/announcements/delete.ts
index 5548f99006..4871dc4e12 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/delete.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/delete.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Announcements } from '@/models/index';
-import { ApiError } from '../../../error';
+import define from '../../../define.js';
+import { Announcements } from '@/models/index.js';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,12 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		id: {
-			validator: $.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchAnnouncement: {
 			message: 'No such announcement.',
@@ -25,8 +17,16 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		id: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['id'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const announcement = await Announcements.findOne(ps.id);
 
 	if (announcement == null) throw new ApiError(meta.errors.noSuchAnnouncement);
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/list.ts b/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
index e5cc53ccdd..0ba0a8ee08 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../../define';
-import { Announcements, AnnouncementReads } from '@/models/index';
-import { makePaginationQuery } from '../../../common/make-pagination-query';
+import define from '../../../define.js';
+import { Announcements, AnnouncementReads } from '@/models/index.js';
+import { makePaginationQuery } from '../../../common/make-pagination-query.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,21 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -69,11 +52,21 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const query = makePaginationQuery(Announcements.createQueryBuilder('announcement'), ps.sinceId, ps.untilId);
 
-	const announcements = await query.take(ps.limit!).getMany();
+	const announcements = await query.take(ps.limit).getMany();
 
 	for (const announcement of announcements) {
 		(announcement as any).reads = await AnnouncementReads.count({
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/update.ts b/packages/backend/src/server/api/endpoints/admin/announcements/update.ts
index f66293bb18..138337ef5b 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/update.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/update.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Announcements } from '@/models/index';
-import { ApiError } from '../../../error';
+import define from '../../../define.js';
+import { Announcements } from '@/models/index.js';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,21 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		id: {
-			validator: $.type(ID),
-		},
-		title: {
-			validator: $.str.min(1),
-		},
-		text: {
-			validator: $.str.min(1),
-		},
-		imageUrl: {
-			validator: $.nullable.str.min(1),
-		},
-	},
-
 	errors: {
 		noSuchAnnouncement: {
 			message: 'No such announcement.',
@@ -34,8 +17,19 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		id: { type: 'string', format: 'misskey:id' },
+		title: { type: 'string', minLength: 1 },
+		text: { type: 'string', minLength: 1 },
+		imageUrl: { type: 'string', nullable: true, minLength: 1 },
+	},
+	required: ['id', 'title', 'text', 'imageUrl'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const announcement = await Announcements.findOne(ps.id);
 
 	if (announcement == null) throw new ApiError(meta.errors.noSuchAnnouncement);
diff --git a/packages/backend/src/server/api/endpoints/admin/delete-all-files-of-a-user.ts b/packages/backend/src/server/api/endpoints/admin/delete-all-files-of-a-user.ts
index 249e63a0f8..90e65ec4cd 100644
--- a/packages/backend/src/server/api/endpoints/admin/delete-all-files-of-a-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/delete-all-files-of-a-user.ts
@@ -1,24 +1,24 @@
-import $ from 'cafy';
-import define from '../../define';
-import { deleteFile } from '@/services/drive/delete-file';
-import { DriveFiles } from '@/models/index';
-import { ID } from '@/misc/cafy-id';
+import define from '../../define.js';
+import { deleteFile } from '@/services/drive/delete-file.js';
+import { DriveFiles } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['userId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const files = await DriveFiles.find({
 		userId: ps.userId,
 	});
diff --git a/packages/backend/src/server/api/endpoints/admin/drive/clean-remote-files.ts b/packages/backend/src/server/api/endpoints/admin/drive/clean-remote-files.ts
index acabbfef5c..bab149532e 100644
--- a/packages/backend/src/server/api/endpoints/admin/drive/clean-remote-files.ts
+++ b/packages/backend/src/server/api/endpoints/admin/drive/clean-remote-files.ts
@@ -1,5 +1,5 @@
-import define from '../../../define';
-import { createCleanRemoteFilesJob } from '@/queue/index';
+import define from '../../../define.js';
+import { createCleanRemoteFilesJob } from '@/queue/index.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -8,7 +8,13 @@ export const meta = {
 	requireModerator: true,
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	createCleanRemoteFilesJob();
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/drive/cleanup.ts b/packages/backend/src/server/api/endpoints/admin/drive/cleanup.ts
index 452e7069a8..3e7d43fb0b 100644
--- a/packages/backend/src/server/api/endpoints/admin/drive/cleanup.ts
+++ b/packages/backend/src/server/api/endpoints/admin/drive/cleanup.ts
@@ -1,7 +1,7 @@
 import { IsNull } from 'typeorm';
-import define from '../../../define';
-import { deleteFile } from '@/services/drive/delete-file';
-import { DriveFiles } from '@/models/index';
+import define from '../../../define.js';
+import { deleteFile } from '@/services/drive/delete-file.js';
+import { DriveFiles } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,8 +10,14 @@ export const meta = {
 	requireModerator: true,
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const files = await DriveFiles.find({
 		userId: IsNull(),
 	});
diff --git a/packages/backend/src/server/api/endpoints/admin/drive/files.ts b/packages/backend/src/server/api/endpoints/admin/drive/files.ts
index 264f549867..646d85a1e0 100644
--- a/packages/backend/src/server/api/endpoints/admin/drive/files.ts
+++ b/packages/backend/src/server/api/endpoints/admin/drive/files.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { DriveFiles } from '@/models/index';
-import { makePaginationQuery } from '../../../common/make-pagination-query';
-import { ID } from '@/misc/cafy-id';
+import define from '../../../define.js';
+import { DriveFiles } from '@/models/index.js';
+import { makePaginationQuery } from '../../../common/make-pagination-query.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,39 +8,6 @@ export const meta = {
 	requireCredential: false,
 	requireModerator: true,
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-
-		type: {
-			validator: $.optional.nullable.str.match(/^[a-zA-Z0-9\/\-*]+$/),
-		},
-
-		origin: {
-			validator: $.optional.str.or([
-				'combined',
-				'local',
-				'remote',
-			]),
-			default: 'local',
-		},
-
-		hostname: {
-			validator: $.optional.nullable.str,
-			default: null,
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -54,8 +19,21 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+		type: { type: 'string', nullable: true, pattern: /^[a-zA-Z0-9\/\-*]+$/.toString().slice(1, -1) },
+		origin: { type: 'string', enum: ['combined', 'local', 'remote'], default: "local" },
+		hostname: { type: 'string', nullable: true, default: null },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const query = makePaginationQuery(DriveFiles.createQueryBuilder('file'), ps.sinceId, ps.untilId);
 
 	if (ps.origin === 'local') {
@@ -76,7 +54,7 @@ export default define(meta, async (ps, me) => {
 		}
 	}
 
-	const files = await query.take(ps.limit!).getMany();
+	const files = await query.take(ps.limit).getMany();
 
 	return await DriveFiles.packMany(files, { detail: true, withUser: true, self: true });
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/drive/show-file.ts b/packages/backend/src/server/api/endpoints/admin/drive/show-file.ts
index 5d9a1f2703..e821160095 100644
--- a/packages/backend/src/server/api/endpoints/admin/drive/show-file.ts
+++ b/packages/backend/src/server/api/endpoints/admin/drive/show-file.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../../define';
-import { ApiError } from '../../../error';
-import { DriveFiles } from '@/models/index';
+import define from '../../../define.js';
+import { ApiError } from '../../../error.js';
+import { DriveFiles } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,16 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		fileId: {
-			validator: $.optional.type(ID),
-		},
-
-		url: {
-			validator: $.optional.str,
-		},
-	},
-
 	errors: {
 		noSuchFile: {
 			message: 'No such file.',
@@ -161,8 +149,17 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		fileId: { type: 'string', format: 'misskey:id' },
+		url: { type: 'string' },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const file = ps.fileId ? await DriveFiles.findOne(ps.fileId) : await DriveFiles.findOne({
 		where: [{
 			url: ps.url,
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/add-aliases-bulk.ts b/packages/backend/src/server/api/endpoints/admin/emoji/add-aliases-bulk.ts
index f0fd73c276..77a4adea61 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/add-aliases-bulk.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/add-aliases-bulk.ts
@@ -1,29 +1,30 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Emojis } from '@/models/index';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
 import { getConnection, In } from 'typeorm';
-import { ApiError } from '../../../error';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		ids: {
-			validator: $.arr($.type(ID)),
-		},
-
-		aliases: {
-			validator: $.arr($.str),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		ids: { type: 'array', items: {
+			type: 'string', format: 'misskey:id',
+		} },
+		aliases: { type: 'array', items: {
+			type: 'string',
+		} },
 	},
+	required: ['ids', 'aliases'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const emojis = await Emojis.find({
 		id: In(ps.ids),
 	});
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/add.ts b/packages/backend/src/server/api/endpoints/admin/emoji/add.ts
index 1dfeae262f..c5787d59dc 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/add.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/add.ts
@@ -1,13 +1,11 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Emojis, DriveFiles } from '@/models/index';
-import { genId } from '@/misc/gen-id';
+import define from '../../../define.js';
+import { Emojis, DriveFiles } from '@/models/index.js';
+import { genId } from '@/misc/gen-id.js';
 import { getConnection } from 'typeorm';
-import { insertModerationLog } from '@/services/insert-moderation-log';
-import { ApiError } from '../../../error';
-import { ID } from '@/misc/cafy-id';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
+import { ApiError } from '../../../error.js';
 import rndstr from 'rndstr';
-import { publishBroadcastStream } from '@/services/stream';
+import { publishBroadcastStream } from '@/services/stream.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -15,12 +13,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		fileId: {
-			validator: $.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchFile: {
 			message: 'No such file.',
@@ -30,8 +22,16 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		fileId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['fileId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const file = await DriveFiles.findOne(ps.fileId);
 
 	if (file == null) throw new ApiError(meta.errors.noSuchFile);
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/copy.ts b/packages/backend/src/server/api/endpoints/admin/emoji/copy.ts
index 17cbf208aa..a0eaa61258 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/copy.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/copy.ts
@@ -1,13 +1,11 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Emojis } from '@/models/index';
-import { genId } from '@/misc/gen-id';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
+import { genId } from '@/misc/gen-id.js';
 import { getConnection } from 'typeorm';
-import { ApiError } from '../../../error';
-import { DriveFile } from '@/models/entities/drive-file';
-import { ID } from '@/misc/cafy-id';
-import { uploadFromUrl } from '@/services/drive/upload-from-url';
-import { publishBroadcastStream } from '@/services/stream';
+import { ApiError } from '../../../error.js';
+import { DriveFile } from '@/models/entities/drive-file.js';
+import { uploadFromUrl } from '@/services/drive/upload-from-url.js';
+import { publishBroadcastStream } from '@/services/stream.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -15,12 +13,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		emojiId: {
-			validator: $.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchEmoji: {
 			message: 'No such emoji.',
@@ -42,8 +34,16 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		emojiId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['emojiId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const emoji = await Emojis.findOne(ps.emojiId);
 
 	if (emoji == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/delete-bulk.ts b/packages/backend/src/server/api/endpoints/admin/emoji/delete-bulk.ts
index 797a5de672..38a2d65cf6 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/delete-bulk.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/delete-bulk.ts
@@ -1,26 +1,28 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Emojis } from '@/models/index';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
 import { getConnection, In } from 'typeorm';
-import { insertModerationLog } from '@/services/insert-moderation-log';
-import { ApiError } from '../../../error';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		ids: {
-			validator: $.arr($.type(ID)),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		ids: { type: 'array', items: {
+			type: 'string', format: 'misskey:id',
+		} },
 	},
+	required: ['ids'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const emojis = await Emojis.find({
 		id: In(ps.ids),
 	});
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/delete.ts b/packages/backend/src/server/api/endpoints/admin/emoji/delete.ts
index 1580439024..a0cffb47f8 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/delete.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/delete.ts
@@ -1,10 +1,8 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Emojis } from '@/models/index';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
 import { getConnection } from 'typeorm';
-import { insertModerationLog } from '@/services/insert-moderation-log';
-import { ApiError } from '../../../error';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -12,12 +10,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		id: {
-			validator: $.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchEmoji: {
 			message: 'No such emoji.',
@@ -27,8 +19,16 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		id: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['id'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const emoji = await Emojis.findOne(ps.id);
 
 	if (emoji == null) throw new ApiError(meta.errors.noSuchEmoji);
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/import-zip.ts b/packages/backend/src/server/api/endpoints/admin/emoji/import-zip.ts
index 8856a38f24..3f03dc2da4 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/import-zip.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/import-zip.ts
@@ -1,21 +1,22 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { createImportCustomEmojisJob } from '@/queue/index';
+import define from '../../../define.js';
+import { createImportCustomEmojisJob } from '@/queue/index.js';
 import ms from 'ms';
-import { ID } from '@/misc/cafy-id';
 
 export const meta = {
 	secure: true,
 	requireCredential: true,
 	requireModerator: true,
-	params: {
-		fileId: {
-			validator: $.type(ID),
-		},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		fileId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['fileId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	createImportCustomEmojisJob(user, ps.fileId);
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/list-remote.ts b/packages/backend/src/server/api/endpoints/admin/emoji/list-remote.ts
index 6e502547f5..f19c3ddbd8 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/list-remote.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/list-remote.ts
@@ -1,9 +1,7 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Emojis } from '@/models/index';
-import { toPuny } from '@/misc/convert-host';
-import { makePaginationQuery } from '../../../common/make-pagination-query';
-import { ID } from '@/misc/cafy-id';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
+import { toPuny } from '@/misc/convert-host.js';
+import { makePaginationQuery } from '../../../common/make-pagination-query.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -11,31 +9,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		query: {
-			validator: $.optional.nullable.str,
-			default: null,
-		},
-
-		host: {
-			validator: $.optional.nullable.str,
-			default: null,
-		},
-
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -77,8 +50,20 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		query: { type: 'string', nullable: true, default: null },
+		host: { type: 'string', nullable: true, default: null },
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const q = makePaginationQuery(Emojis.createQueryBuilder('emoji'), ps.sinceId, ps.untilId);
 
 	if (ps.host == null) {
@@ -93,7 +78,7 @@ export default define(meta, async (ps) => {
 
 	const emojis = await q
 		.orderBy('emoji.id', 'DESC')
-		.take(ps.limit!)
+		.take(ps.limit)
 		.getMany();
 
 	return Emojis.packMany(emojis);
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/list.ts b/packages/backend/src/server/api/endpoints/admin/emoji/list.ts
index 76ef190f94..f488a71a00 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/list.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/list.ts
@@ -1,9 +1,7 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Emojis } from '@/models/index';
-import { makePaginationQuery } from '../../../common/make-pagination-query';
-import { ID } from '@/misc/cafy-id';
-import { Emoji } from '@/models/entities/emoji';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
+import { makePaginationQuery } from '../../../common/make-pagination-query.js';
+import { Emoji } from '@/models/entities/emoji.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -11,26 +9,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		query: {
-			validator: $.optional.nullable.str,
-			default: null,
-		},
-
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -72,8 +50,19 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		query: { type: 'string', nullable: true, default: null },
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const q = makePaginationQuery(Emojis.createQueryBuilder('emoji'), ps.sinceId, ps.untilId)
 		.andWhere(`emoji.host IS NULL`);
 
@@ -81,7 +70,7 @@ export default define(meta, async (ps) => {
 
 	if (ps.query) {
 		//q.andWhere('emoji.name ILIKE :q', { q: `%${ps.query}%` });
-		//const emojis = await q.take(ps.limit!).getMany();
+		//const emojis = await q.take(ps.limit).getMany();
 
 		emojis = await q.getMany();
 
@@ -90,9 +79,9 @@ export default define(meta, async (ps) => {
 			emoji.aliases.some(a => a.includes(ps.query!)) ||
 			emoji.category?.includes(ps.query!));
 
-		emojis.splice(ps.limit! + 1);
+		emojis.splice(ps.limit + 1);
 	} else {
-		emojis = await q.take(ps.limit!).getMany();
+		emojis = await q.take(ps.limit).getMany();
 	}
 
 	return Emojis.packMany(emojis);
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/remove-aliases-bulk.ts b/packages/backend/src/server/api/endpoints/admin/emoji/remove-aliases-bulk.ts
index c49f84b7fb..dbad93d336 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/remove-aliases-bulk.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/remove-aliases-bulk.ts
@@ -1,29 +1,30 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Emojis } from '@/models/index';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
 import { getConnection, In } from 'typeorm';
-import { ApiError } from '../../../error';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		ids: {
-			validator: $.arr($.type(ID)),
-		},
-
-		aliases: {
-			validator: $.arr($.str),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		ids: { type: 'array', items: {
+			type: 'string', format: 'misskey:id',
+		} },
+		aliases: { type: 'array', items: {
+			type: 'string',
+		} },
 	},
+	required: ['ids', 'aliases'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const emojis = await Emojis.find({
 		id: In(ps.ids),
 	});
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/set-aliases-bulk.ts b/packages/backend/src/server/api/endpoints/admin/emoji/set-aliases-bulk.ts
index 06197820f0..470b9bef08 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/set-aliases-bulk.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/set-aliases-bulk.ts
@@ -1,29 +1,30 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Emojis } from '@/models/index';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
 import { getConnection, In } from 'typeorm';
-import { ApiError } from '../../../error';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		ids: {
-			validator: $.arr($.type(ID)),
-		},
-
-		aliases: {
-			validator: $.arr($.str),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		ids: { type: 'array', items: {
+			type: 'string', format: 'misskey:id',
+		} },
+		aliases: { type: 'array', items: {
+			type: 'string',
+		} },
 	},
+	required: ['ids', 'aliases'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	await Emojis.update({
 		id: In(ps.ids),
 	}, {
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/set-category-bulk.ts b/packages/backend/src/server/api/endpoints/admin/emoji/set-category-bulk.ts
index f0645f111b..40e4c0199e 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/set-category-bulk.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/set-category-bulk.ts
@@ -1,29 +1,28 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Emojis } from '@/models/index';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
 import { getConnection, In } from 'typeorm';
-import { ApiError } from '../../../error';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		ids: {
-			validator: $.arr($.type(ID)),
-		},
-
-		category: {
-			validator: $.optional.nullable.str,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		ids: { type: 'array', items: {
+			type: 'string', format: 'misskey:id',
+		} },
+		category: { type: 'string', nullable: true },
 	},
+	required: ['ids'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	await Emojis.update({
 		id: In(ps.ids),
 	}, {
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/update.ts b/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
index 54a2cf9517..c6d07e16fa 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
@@ -1,9 +1,7 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { ID } from '@/misc/cafy-id';
-import { Emojis } from '@/models/index';
+import define from '../../../define.js';
+import { Emojis } from '@/models/index.js';
 import { getConnection } from 'typeorm';
-import { ApiError } from '../../../error';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -11,24 +9,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		id: {
-			validator: $.type(ID),
-		},
-
-		name: {
-			validator: $.str,
-		},
-
-		category: {
-			validator: $.optional.nullable.str,
-		},
-
-		aliases: {
-			validator: $.arr($.str),
-		},
-	},
-
 	errors: {
 		noSuchEmoji: {
 			message: 'No such emoji.',
@@ -38,8 +18,21 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		id: { type: 'string', format: 'misskey:id' },
+		name: { type: 'string' },
+		category: { type: 'string', nullable: true },
+		aliases: { type: 'array', items: {
+			type: 'string',
+		} },
+	},
+	required: ['id', 'name', 'aliases'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const emoji = await Emojis.findOne(ps.id);
 
 	if (emoji == null) throw new ApiError(meta.errors.noSuchEmoji);
diff --git a/packages/backend/src/server/api/endpoints/admin/federation/delete-all-files.ts b/packages/backend/src/server/api/endpoints/admin/federation/delete-all-files.ts
index db023c6f0b..d4251f2feb 100644
--- a/packages/backend/src/server/api/endpoints/admin/federation/delete-all-files.ts
+++ b/packages/backend/src/server/api/endpoints/admin/federation/delete-all-files.ts
@@ -1,23 +1,24 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { deleteFile } from '@/services/drive/delete-file';
-import { DriveFiles } from '@/models/index';
+import define from '../../../define.js';
+import { deleteFile } from '@/services/drive/delete-file.js';
+import { DriveFiles } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		host: {
-			validator: $.str,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		host: { type: 'string' },
 	},
+	required: ['host'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const files = await DriveFiles.find({
 		userHost: ps.host,
 	});
diff --git a/packages/backend/src/server/api/endpoints/admin/federation/refresh-remote-instance-metadata.ts b/packages/backend/src/server/api/endpoints/admin/federation/refresh-remote-instance-metadata.ts
index b68252ef2e..86978cc309 100644
--- a/packages/backend/src/server/api/endpoints/admin/federation/refresh-remote-instance-metadata.ts
+++ b/packages/backend/src/server/api/endpoints/admin/federation/refresh-remote-instance-metadata.ts
@@ -1,24 +1,25 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Instances } from '@/models/index';
-import { toPuny } from '@/misc/convert-host';
-import { fetchInstanceMetadata } from '@/services/fetch-instance-metadata';
+import define from '../../../define.js';
+import { Instances } from '@/models/index.js';
+import { toPuny } from '@/misc/convert-host.js';
+import { fetchInstanceMetadata } from '@/services/fetch-instance-metadata.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		host: {
-			validator: $.str,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		host: { type: 'string' },
 	},
+	required: ['host'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const instance = await Instances.findOne({ host: toPuny(ps.host) });
 
 	if (instance == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/federation/remove-all-following.ts b/packages/backend/src/server/api/endpoints/admin/federation/remove-all-following.ts
index 4de8ad1336..ccd07489cb 100644
--- a/packages/backend/src/server/api/endpoints/admin/federation/remove-all-following.ts
+++ b/packages/backend/src/server/api/endpoints/admin/federation/remove-all-following.ts
@@ -1,23 +1,24 @@
-import $ from 'cafy';
-import define from '../../../define';
-import deleteFollowing from '@/services/following/delete';
-import { Followings, Users } from '@/models/index';
+import define from '../../../define.js';
+import deleteFollowing from '@/services/following/delete.js';
+import { Followings, Users } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		host: {
-			validator: $.str,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		host: { type: 'string' },
 	},
+	required: ['host'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const followings = await Followings.find({
 		followerHost: ps.host,
 	});
diff --git a/packages/backend/src/server/api/endpoints/admin/federation/update-instance.ts b/packages/backend/src/server/api/endpoints/admin/federation/update-instance.ts
index 6ac2f1f467..1981082428 100644
--- a/packages/backend/src/server/api/endpoints/admin/federation/update-instance.ts
+++ b/packages/backend/src/server/api/endpoints/admin/federation/update-instance.ts
@@ -1,27 +1,25 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { Instances } from '@/models/index';
-import { toPuny } from '@/misc/convert-host';
+import define from '../../../define.js';
+import { Instances } from '@/models/index.js';
+import { toPuny } from '@/misc/convert-host.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		host: {
-			validator: $.str,
-		},
-
-		isSuspended: {
-			validator: $.bool,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		host: { type: 'string' },
+		isSuspended: { type: 'boolean' },
 	},
+	required: ['host', 'isSuspended'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const instance = await Instances.findOne({ host: toPuny(ps.host) });
 
 	if (instance == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/get-index-stats.ts b/packages/backend/src/server/api/endpoints/admin/get-index-stats.ts
index 9a2bccec77..37878c4143 100644
--- a/packages/backend/src/server/api/endpoints/admin/get-index-stats.ts
+++ b/packages/backend/src/server/api/endpoints/admin/get-index-stats.ts
@@ -1,4 +1,4 @@
-import define from '../../define';
+import define from '../../define.js';
 import { getConnection } from 'typeorm';
 
 export const meta = {
@@ -6,13 +6,16 @@ export const meta = {
 	requireModerator: true,
 
 	tags: ['admin'],
+} as const;
 
-	params: {
-	},
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async () => {
+export default define(meta, paramDef, async () => {
 	const stats = await
 		getConnection().query(`SELECT * FROM pg_indexes;`)
 		.then(recs => {
diff --git a/packages/backend/src/server/api/endpoints/admin/get-table-stats.ts b/packages/backend/src/server/api/endpoints/admin/get-table-stats.ts
index 1c5f250676..7cf2d5ffd4 100644
--- a/packages/backend/src/server/api/endpoints/admin/get-table-stats.ts
+++ b/packages/backend/src/server/api/endpoints/admin/get-table-stats.ts
@@ -1,4 +1,4 @@
-import define from '../../define';
+import define from '../../define.js';
 import { getConnection } from 'typeorm';
 
 export const meta = {
@@ -7,9 +7,6 @@ export const meta = {
 
 	tags: ['admin'],
 
-	params: {
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -22,8 +19,14 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async () => {
+export default define(meta, paramDef, async () => {
 	const sizes = await
 		getConnection().query(`
 			SELECT relname AS "table", reltuples as "count", pg_total_relation_size(C.oid) AS "size"
diff --git a/packages/backend/src/server/api/endpoints/admin/invite.ts b/packages/backend/src/server/api/endpoints/admin/invite.ts
index 3428709c04..7e950cf87b 100644
--- a/packages/backend/src/server/api/endpoints/admin/invite.ts
+++ b/packages/backend/src/server/api/endpoints/admin/invite.ts
@@ -1,7 +1,7 @@
 import rndstr from 'rndstr';
-import define from '../../define';
-import { RegistrationTickets } from '@/models/index';
-import { genId } from '@/misc/gen-id';
+import define from '../../define.js';
+import { RegistrationTickets } from '@/models/index.js';
+import { genId } from '@/misc/gen-id.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -9,8 +9,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -26,8 +24,14 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async () => {
+export default define(meta, paramDef, async () => {
 	const code = rndstr({
 		length: 8,
 		chars: '2-9A-HJ-NP-Z', // [0-9A-Z] w/o [01IO] (32 patterns)
diff --git a/packages/backend/src/server/api/endpoints/admin/moderators/add.ts b/packages/backend/src/server/api/endpoints/admin/moderators/add.ts
index 0308cf2761..4206e3a3c2 100644
--- a/packages/backend/src/server/api/endpoints/admin/moderators/add.ts
+++ b/packages/backend/src/server/api/endpoints/admin/moderators/add.ts
@@ -1,23 +1,23 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../../define';
-import { Users } from '@/models/index';
+import define from '../../../define.js';
+import { Users } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireAdmin: true,
+} as const;
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['userId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const user = await Users.findOne(ps.userId as string);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/moderators/remove.ts b/packages/backend/src/server/api/endpoints/admin/moderators/remove.ts
index bdb976e9ec..143119bfe4 100644
--- a/packages/backend/src/server/api/endpoints/admin/moderators/remove.ts
+++ b/packages/backend/src/server/api/endpoints/admin/moderators/remove.ts
@@ -1,23 +1,23 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../../define';
-import { Users } from '@/models/index';
+import define from '../../../define.js';
+import { Users } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireAdmin: true,
+} as const;
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['userId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const user = await Users.findOne(ps.userId as string);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/promo/create.ts b/packages/backend/src/server/api/endpoints/admin/promo/create.ts
index f2735ac9f8..2eec5bf0db 100644
--- a/packages/backend/src/server/api/endpoints/admin/promo/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/promo/create.ts
@@ -1,9 +1,7 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../../define';
-import { ApiError } from '../../../error';
-import { getNote } from '../../../common/getters';
-import { PromoNotes } from '@/models/index';
+import define from '../../../define.js';
+import { ApiError } from '../../../error.js';
+import { getNote } from '../../../common/getters.js';
+import { PromoNotes } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -11,16 +9,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		noteId: {
-			validator: $.type(ID),
-		},
-
-		expiresAt: {
-			validator: $.num.int(),
-		},
-	},
-
 	errors: {
 		noSuchNote: {
 			message: 'No such note.',
@@ -36,8 +24,17 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		noteId: { type: 'string', format: 'misskey:id' },
+		expiresAt: { type: 'integer' },
+	},
+	required: ['noteId', 'expiresAt'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const note = await getNote(ps.noteId).catch(e => {
 		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
 		throw e;
@@ -51,7 +48,6 @@ export default define(meta, async (ps, user) => {
 
 	await PromoNotes.insert({
 		noteId: note.id,
-		createdAt: new Date(),
 		expiresAt: new Date(ps.expiresAt),
 		userId: note.userId,
 	});
diff --git a/packages/backend/src/server/api/endpoints/admin/queue/clear.ts b/packages/backend/src/server/api/endpoints/admin/queue/clear.ts
index 3c8e7a27a2..8f015c280a 100644
--- a/packages/backend/src/server/api/endpoints/admin/queue/clear.ts
+++ b/packages/backend/src/server/api/endpoints/admin/queue/clear.ts
@@ -1,18 +1,22 @@
-import define from '../../../define';
-import { destroy } from '@/queue/index';
-import { insertModerationLog } from '@/services/insert-moderation-log';
+import define from '../../../define.js';
+import { destroy } from '@/queue/index.js';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {},
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	destroy();
 
 	insertModerationLog(me, 'clearQueue');
diff --git a/packages/backend/src/server/api/endpoints/admin/queue/deliver-delayed.ts b/packages/backend/src/server/api/endpoints/admin/queue/deliver-delayed.ts
index 4760e2c310..70f7d77de4 100644
--- a/packages/backend/src/server/api/endpoints/admin/queue/deliver-delayed.ts
+++ b/packages/backend/src/server/api/endpoints/admin/queue/deliver-delayed.ts
@@ -1,6 +1,6 @@
-import { deliverQueue } from '@/queue/queues';
-import { URL } from 'url';
-import define from '../../../define';
+import { deliverQueue } from '@/queue/queues.js';
+import { URL } from 'node:url';
+import define from '../../../define.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -8,9 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -35,8 +32,14 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const jobs = await deliverQueue.getJobs(['delayed']);
 
 	const res = [] as [string, number][];
diff --git a/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts b/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
index a95aabc506..2235ce8f97 100644
--- a/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
+++ b/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
@@ -1,6 +1,6 @@
-import { URL } from 'url';
-import define from '../../../define';
-import { inboxQueue } from '@/queue/queues';
+import { URL } from 'node:url';
+import define from '../../../define.js';
+import { inboxQueue } from '@/queue/queues.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -8,9 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -35,8 +32,14 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const jobs = await inboxQueue.getJobs(['delayed']);
 
 	const res = [] as [string, number][];
diff --git a/packages/backend/src/server/api/endpoints/admin/queue/jobs.ts b/packages/backend/src/server/api/endpoints/admin/queue/jobs.ts
deleted file mode 100644
index df0b4a8f13..0000000000
--- a/packages/backend/src/server/api/endpoints/admin/queue/jobs.ts
+++ /dev/null
@@ -1,82 +0,0 @@
-import { deliverQueue, inboxQueue, dbQueue, objectStorageQueue } from '@/queue/queues';
-import $ from 'cafy';
-import define from '../../../define';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-
-	params: {
-		domain: {
-			validator: $.str.or(['deliver', 'inbox', 'db', 'objectStorage']),
-		},
-
-		state: {
-			validator: $.str.or(['active', 'waiting', 'delayed']),
-		},
-
-		limit: {
-			validator: $.optional.num,
-			default: 50,
-		},
-	},
-
-	res: {
-		type: 'array',
-		optional: false, nullable: false,
-		items: {
-			type: 'object',
-			optional: false, nullable: false,
-			properties: {
-				id: {
-					type: 'string',
-					optional: false, nullable: false,
-					format: 'id',
-				},
-				data: {
-					type: 'object',
-					optional: false, nullable: false,
-				},
-				attempts: {
-					type: 'number',
-					optional: false, nullable: false,
-				},
-				maxAttempts: {
-					type: 'number',
-					optional: false, nullable: false,
-				},
-				timestamp: {
-					type: 'number',
-					optional: false, nullable: false,
-				},
-			},
-		},
-	},
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
-	const queue =
-		ps.domain === 'deliver' ? deliverQueue :
-		ps.domain === 'inbox' ? inboxQueue :
-		ps.domain === 'db' ? dbQueue :
-		ps.domain === 'objectStorage' ? objectStorageQueue :
-		null as never;
-
-	const jobs = await queue.getJobs([ps.state], 0, ps.limit!);
-
-	return jobs.map(job => {
-		const data = job.data;
-		delete data.content;
-		delete data.user;
-		return {
-			id: job.id,
-			data,
-			attempts: job.attemptsMade,
-			maxAttempts: job.opts ? job.opts.attempts : 0,
-			timestamp: job.timestamp,
-		};
-	});
-});
diff --git a/packages/backend/src/server/api/endpoints/admin/queue/stats.ts b/packages/backend/src/server/api/endpoints/admin/queue/stats.ts
index dab0be5dbc..988b5a5e35 100644
--- a/packages/backend/src/server/api/endpoints/admin/queue/stats.ts
+++ b/packages/backend/src/server/api/endpoints/admin/queue/stats.ts
@@ -1,5 +1,5 @@
-import { deliverQueue, inboxQueue, dbQueue, objectStorageQueue } from '@/queue/queues';
-import define from '../../../define';
+import { deliverQueue, inboxQueue, dbQueue, objectStorageQueue } from '@/queue/queues.js';
+import define from '../../../define.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -7,8 +7,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -33,8 +31,14 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const deliverJobCounts = await deliverQueue.getJobCounts();
 	const inboxJobCounts = await inboxQueue.getJobCounts();
 	const dbJobCounts = await dbQueue.getJobCounts();
diff --git a/packages/backend/src/server/api/endpoints/admin/relays/add.ts b/packages/backend/src/server/api/endpoints/admin/relays/add.ts
index 65890a00f7..348e9baca1 100644
--- a/packages/backend/src/server/api/endpoints/admin/relays/add.ts
+++ b/packages/backend/src/server/api/endpoints/admin/relays/add.ts
@@ -1,8 +1,7 @@
-import { URL } from 'url';
-import $ from 'cafy';
-import define from '../../../define';
-import { addRelay } from '@/services/relay';
-import { ApiError } from '../../../error';
+import { URL } from 'node:url';
+import define from '../../../define.js';
+import { addRelay } from '@/services/relay.js';
+import { ApiError } from '../../../error.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,12 +9,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		inbox: {
-			validator: $.str,
-		},
-	},
-
 	errors: {
 		invalidUrl: {
 			message: 'Invalid URL',
@@ -52,8 +45,16 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		inbox: { type: 'string' },
+	},
+	required: ['inbox'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	try {
 		if (new URL(ps.inbox).protocol !== 'https:') throw 'https only';
 	} catch {
diff --git a/packages/backend/src/server/api/endpoints/admin/relays/list.ts b/packages/backend/src/server/api/endpoints/admin/relays/list.ts
index bdddf13374..89ec651e61 100644
--- a/packages/backend/src/server/api/endpoints/admin/relays/list.ts
+++ b/packages/backend/src/server/api/endpoints/admin/relays/list.ts
@@ -1,5 +1,5 @@
-import define from '../../../define';
-import { listRelay } from '@/services/relay';
+import define from '../../../define.js';
+import { listRelay } from '@/services/relay.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -7,9 +7,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -42,7 +39,13 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	return await listRelay();
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/relays/remove.ts b/packages/backend/src/server/api/endpoints/admin/relays/remove.ts
index 4b04e620c1..b59cf72c58 100644
--- a/packages/backend/src/server/api/endpoints/admin/relays/remove.ts
+++ b/packages/backend/src/server/api/endpoints/admin/relays/remove.ts
@@ -1,21 +1,22 @@
-import $ from 'cafy';
-import define from '../../../define';
-import { removeRelay } from '@/services/relay';
+import define from '../../../define.js';
+import { removeRelay } from '@/services/relay.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		inbox: {
-			validator: $.str,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		inbox: { type: 'string' },
 	},
+	required: ['inbox'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	return await removeRelay(ps.inbox);
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/reset-password.ts b/packages/backend/src/server/api/endpoints/admin/reset-password.ts
index b6cf1ee2d0..1fd5c8d5a5 100644
--- a/packages/backend/src/server/api/endpoints/admin/reset-password.ts
+++ b/packages/backend/src/server/api/endpoints/admin/reset-password.ts
@@ -1,9 +1,7 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import * as bcrypt from 'bcryptjs';
+import define from '../../define.js';
+import bcrypt from 'bcryptjs';
 import rndstr from 'rndstr';
-import { Users, UserProfiles } from '@/models/index';
+import { Users, UserProfiles } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -11,12 +9,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -31,8 +23,16 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['userId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const user = await Users.findOne(ps.userId as string);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/resolve-abuse-user-report.ts b/packages/backend/src/server/api/endpoints/admin/resolve-abuse-user-report.ts
index b00457f092..a9e5658413 100644
--- a/packages/backend/src/server/api/endpoints/admin/resolve-abuse-user-report.ts
+++ b/packages/backend/src/server/api/endpoints/admin/resolve-abuse-user-report.ts
@@ -1,33 +1,28 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import { AbuseUserReports, Users } from '@/models/index';
-import { getInstanceActor } from '@/services/instance-actor';
-import { deliver } from '@/queue/index';
-import { renderActivity } from '@/remote/activitypub/renderer/index';
-import { renderFlag } from '@/remote/activitypub/renderer/flag';
+import define from '../../define.js';
+import { AbuseUserReports, Users } from '@/models/index.js';
+import { getInstanceActor } from '@/services/instance-actor.js';
+import { deliver } from '@/queue/index.js';
+import { renderActivity } from '@/remote/activitypub/renderer/index.js';
+import { renderFlag } from '@/remote/activitypub/renderer/flag.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		reportId: {
-			validator: $.type(ID),
-		},
-
-		forward: {
-			validator: $.optional.boolean,
-			required: false,
-			default: false,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		reportId: { type: 'string', format: 'misskey:id' },
+		forward: { type: 'boolean', default: false },
 	},
+	required: ['reportId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const report = await AbuseUserReports.findOne(ps.reportId);
 
 	if (report == null) {
@@ -36,9 +31,9 @@ export default define(meta, async (ps, me) => {
 
 	if (ps.forward && report.targetUserHost != null) {
 		const actor = await getInstanceActor();
-		const targetUser = await Users.findOne(report.targetUserId);
+		const targetUser = await Users.findOneOrFail(report.targetUserId);
 
-		deliver(actor, renderActivity(renderFlag(actor, [targetUser.uri], report.comment)), targetUser.inbox);
+		deliver(actor, renderActivity(renderFlag(actor, [targetUser.uri!], report.comment)), targetUser.inbox);
 	}
 
 	await AbuseUserReports.update(report.id, {
diff --git a/packages/backend/src/server/api/endpoints/admin/resync-chart.ts b/packages/backend/src/server/api/endpoints/admin/resync-chart.ts
deleted file mode 100644
index d80d2b0426..0000000000
--- a/packages/backend/src/server/api/endpoints/admin/resync-chart.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-import define from '../../define';
-import { driveChart, notesChart, usersChart } from '@/services/chart/index';
-import { insertModerationLog } from '@/services/insert-moderation-log';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
-	insertModerationLog(me, 'chartResync');
-
-	driveChart.resync();
-	notesChart.resync();
-	usersChart.resync();
-
-	// TODO: ユーザーごとのチャートもキューに入れて更新する
-	// TODO: インスタンスごとのチャートもキューに入れて更新する
-});
diff --git a/packages/backend/src/server/api/endpoints/admin/send-email.ts b/packages/backend/src/server/api/endpoints/admin/send-email.ts
index c2972c35fa..bbdd66e4c9 100644
--- a/packages/backend/src/server/api/endpoints/admin/send-email.ts
+++ b/packages/backend/src/server/api/endpoints/admin/send-email.ts
@@ -1,27 +1,24 @@
-import $ from 'cafy';
-import define from '../../define';
-import { sendEmail } from '@/services/send-email';
+import define from '../../define.js';
+import { sendEmail } from '@/services/send-email.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		to: {
-			validator: $.str,
-		},
-		subject: {
-			validator: $.str,
-		},
-		text: {
-			validator: $.str,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		to: { type: 'string' },
+		subject: { type: 'string' },
+		text: { type: 'string' },
 	},
+	required: ['to', 'subject', 'text'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	await sendEmail(ps.to, ps.subject, ps.text, ps.text);
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/server-info.ts b/packages/backend/src/server/api/endpoints/admin/server-info.ts
index cd282e364c..8bf1c4341c 100644
--- a/packages/backend/src/server/api/endpoints/admin/server-info.ts
+++ b/packages/backend/src/server/api/endpoints/admin/server-info.ts
@@ -1,8 +1,8 @@
-import * as os from 'os';
-import * as si from 'systeminformation';
+import * as os from 'node:os';
+import si from 'systeminformation';
 import { getConnection } from 'typeorm';
-import define from '../../define';
-import { redisClient } from '../../../../db/redis';
+import define from '../../define.js';
+import { redisClient } from '../../../../db/redis.js';
 
 export const meta = {
 	requireCredential: true,
@@ -10,9 +10,6 @@ export const meta = {
 
 	tags: ['admin', 'meta'],
 
-	params: {
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -90,8 +87,14 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async () => {
+export default define(meta, paramDef, async () => {
 	const memStats = await si.mem();
 	const fsStats = await si.fsSize();
 	const netInterface = await si.networkInterfaceDefault();
diff --git a/packages/backend/src/server/api/endpoints/admin/show-moderation-logs.ts b/packages/backend/src/server/api/endpoints/admin/show-moderation-logs.ts
index 84e2b84bb5..3545536aa2 100644
--- a/packages/backend/src/server/api/endpoints/admin/show-moderation-logs.ts
+++ b/packages/backend/src/server/api/endpoints/admin/show-moderation-logs.ts
@@ -1,8 +1,6 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import { ModerationLogs } from '@/models/index';
-import { makePaginationQuery } from '../../common/make-pagination-query';
+import define from '../../define.js';
+import { ModerationLogs } from '@/models/index.js';
+import { makePaginationQuery } from '../../common/make-pagination-query.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -10,21 +8,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -65,11 +48,21 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps) => {
+export default define(meta, paramDef, async (ps) => {
 	const query = makePaginationQuery(ModerationLogs.createQueryBuilder('report'), ps.sinceId, ps.untilId);
 
-	const reports = await query.take(ps.limit!).getMany();
+	const reports = await query.take(ps.limit).getMany();
 
 	return await ModerationLogs.packMany(reports);
 });
diff --git a/packages/backend/src/server/api/endpoints/admin/show-user.ts b/packages/backend/src/server/api/endpoints/admin/show-user.ts
index c2a6a294b5..a435dcc288 100644
--- a/packages/backend/src/server/api/endpoints/admin/show-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/show-user.ts
@@ -1,7 +1,5 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import { Users } from '@/models/index';
+import define from '../../define.js';
+import { Users } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -9,158 +7,22 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
-	},
-
 	res: {
 		type: 'object',
 		nullable: false, optional: false,
-		properties: {
-			id: {
-				type: 'string',
-				nullable: false, optional: false,
-				format: 'id',
-			},
-			createdAt: {
-				type: 'string',
-				nullable: false, optional: false,
-				format: 'date-time',
-			},
-			updatedAt: {
-				type: 'string',
-				nullable: true, optional: false,
-				format: 'date-time',
-			},
-			lastFetchedAt: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			username: {
-				type: 'string',
-				nullable: false, optional: false,
-			},
-			name: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			folowersCount: {
-				type: 'number',
-				nullable: false, optional: true,
-			},
-			followingCount: {
-				type: 'number',
-				nullable: false, optional: false,
-			},
-			notesCount: {
-				type: 'number',
-				nullable: false, optional: false,
-			},
-			avatarId: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			bannerId: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			tags: {
-				type: 'array',
-				nullable: false, optional: false,
-				items: {
-					type: 'string',
-					nullable: false, optional: false,
-				},
-			},
-			avatarUrl: {
-				type: 'string',
-				nullable: true, optional: false,
-				format: 'url',
-			},
-			bannerUrl: {
-				type: 'string',
-				nullable: true, optional: false,
-				format: 'url',
-			},
-			avatarBlurhash: {
-				type: 'any',
-				nullable: true, optional: false,
-				default: null,
-			},
-			bannerBlurhash: {
-				type: 'any',
-				nullable: true, optional: false,
-				default: null,
-			},
-			isSuspended: {
-				type: 'boolean',
-				nullable: false, optional: false,
-			},
-			isSilenced: {
-				type: 'boolean',
-				nullable: false, optional: false,
-			},
-			isLocked: {
-				type: 'boolean',
-				nullable: false, optional: false,
-			},
-			isBot: {
-				type: 'boolean',
-				nullable: false, optional: false,
-			},
-			isCat: {
-				type: 'boolean',
-				nullable: false, optional: false,
-			},
-			isAdmin: {
-				type: 'boolean',
-				nullable: false, optional: false,
-			},
-			isModerator: {
-				type: 'boolean',
-				nullable: false, optional: false,
-			},
-			emojis: {
-				type: 'array',
-				nullable: false, optional: false,
-				items: {
-					type: 'string',
-					nullable: false, optional: false,
-				},
-			},
-			host: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			inbox: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			sharedInbox: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			featured: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			uri: {
-				type: 'string',
-				nullable: true, optional: false,
-			},
-			token: {
-				type: 'string',
-				nullable: true, optional: false,
-				default: '<MASKED>',
-			},
-		},
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['userId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const user = await Users.findOne(ps.userId as string);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/show-users.ts b/packages/backend/src/server/api/endpoints/admin/show-users.ts
index d3dde99b72..1ec86fef2e 100644
--- a/packages/backend/src/server/api/endpoints/admin/show-users.ts
+++ b/packages/backend/src/server/api/endpoints/admin/show-users.ts
@@ -1,6 +1,5 @@
-import $ from 'cafy';
-import define from '../../define';
-import { Users } from '@/models/index';
+import define from '../../define.js';
+import { Users } from '@/models/index.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -8,61 +7,6 @@ export const meta = {
 	requireCredential: true,
 	requireModerator: true,
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		offset: {
-			validator: $.optional.num.min(0),
-			default: 0,
-		},
-
-		sort: {
-			validator: $.optional.str.or([
-				'+follower',
-				'-follower',
-				'+createdAt',
-				'-createdAt',
-				'+updatedAt',
-				'-updatedAt',
-			]),
-		},
-
-		state: {
-			validator: $.optional.str.or([
-				'all',
-				'available',
-				'admin',
-				'moderator',
-				'adminOrModerator',
-				'silenced',
-				'suspended',
-			]),
-			default: 'all',
-		},
-
-		origin: {
-			validator: $.optional.str.or([
-				'combined',
-				'local',
-				'remote',
-			]),
-			default: 'local',
-		},
-
-		username: {
-			validator: $.optional.str,
-			default: null,
-		},
-
-		hostname: {
-			validator: $.optional.str,
-			default: null,
-		},
-	},
-
 	res: {
 		type: 'array',
 		nullable: false, optional: false,
@@ -74,8 +18,22 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		offset: { type: 'integer', default: 0 },
+		sort: { type: 'string', enum: ['+follower', '-follower', '+createdAt', '-createdAt', '+updatedAt', '-updatedAt'] },
+		state: { type: 'string', enum: ['all', 'available', 'admin', 'moderator', 'adminOrModerator', 'silenced', 'suspended'], default: "all" },
+		origin: { type: 'string', enum: ['combined', 'local', 'remote'], default: "local" },
+		username: { type: 'string', default: null },
+		hostname: { type: 'string', default: null },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const query = Users.createQueryBuilder('user');
 
 	switch (ps.state) {
@@ -111,7 +69,7 @@ export default define(meta, async (ps, me) => {
 		default: query.orderBy('user.id', 'ASC'); break;
 	}
 
-	query.take(ps.limit!);
+	query.take(ps.limit);
 	query.skip(ps.offset);
 
 	const users = await query.getMany();
diff --git a/packages/backend/src/server/api/endpoints/admin/silence-user.ts b/packages/backend/src/server/api/endpoints/admin/silence-user.ts
index 872bd2a6ac..4a74c3fb00 100644
--- a/packages/backend/src/server/api/endpoints/admin/silence-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/silence-user.ts
@@ -1,24 +1,24 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import { Users } from '@/models/index';
-import { insertModerationLog } from '@/services/insert-moderation-log';
+import define from '../../define.js';
+import { Users } from '@/models/index.js';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['userId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const user = await Users.findOne(ps.userId as string);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/suspend-user.ts b/packages/backend/src/server/api/endpoints/admin/suspend-user.ts
index 2bb1875fc0..adaa7b86ce 100644
--- a/packages/backend/src/server/api/endpoints/admin/suspend-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/suspend-user.ts
@@ -1,28 +1,28 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import deleteFollowing from '@/services/following/delete';
-import { Users, Followings, Notifications } from '@/models/index';
-import { User } from '@/models/entities/user';
-import { insertModerationLog } from '@/services/insert-moderation-log';
-import { doPostSuspend } from '@/services/suspend-user';
-import { publishUserEvent } from '@/services/stream';
+import define from '../../define.js';
+import deleteFollowing from '@/services/following/delete.js';
+import { Users, Followings, Notifications } from '@/models/index.js';
+import { User } from '@/models/entities/user.js';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
+import { doPostSuspend } from '@/services/suspend-user.js';
+import { publishUserEvent } from '@/services/stream.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['userId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const user = await Users.findOne(ps.userId as string);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/unsilence-user.ts b/packages/backend/src/server/api/endpoints/admin/unsilence-user.ts
index a4c6ff2ade..4e6366aa18 100644
--- a/packages/backend/src/server/api/endpoints/admin/unsilence-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/unsilence-user.ts
@@ -1,24 +1,24 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import { Users } from '@/models/index';
-import { insertModerationLog } from '@/services/insert-moderation-log';
+import define from '../../define.js';
+import { Users } from '@/models/index.js';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['userId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const user = await Users.findOne(ps.userId as string);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/unsuspend-user.ts b/packages/backend/src/server/api/endpoints/admin/unsuspend-user.ts
index 5ab56d51c7..3b9e0a94e0 100644
--- a/packages/backend/src/server/api/endpoints/admin/unsuspend-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/unsuspend-user.ts
@@ -1,25 +1,25 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
-import define from '../../define';
-import { Users } from '@/models/index';
-import { insertModerationLog } from '@/services/insert-moderation-log';
-import { doPostUnsuspend } from '@/services/unsuspend-user';
+import define from '../../define.js';
+import { Users } from '@/models/index.js';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
+import { doPostUnsuspend } from '@/services/unsuspend-user.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		userId: {
-			validator: $.type(ID),
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		userId: { type: 'string', format: 'misskey:id' },
 	},
+	required: ['userId'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const user = await Users.findOne(ps.userId as string);
 
 	if (user == null) {
diff --git a/packages/backend/src/server/api/endpoints/admin/update-meta.ts b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
index aa2d1222f7..66b634c877 100644
--- a/packages/backend/src/server/api/endpoints/admin/update-meta.ts
+++ b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
@@ -1,306 +1,107 @@
-import $ from 'cafy';
-import define from '../../define';
+import define from '../../define.js';
 import { getConnection } from 'typeorm';
-import { Meta } from '@/models/entities/meta';
-import { insertModerationLog } from '@/services/insert-moderation-log';
-import { DB_MAX_NOTE_TEXT_LENGTH } from '@/misc/hard-limits';
-import { ID } from '@/misc/cafy-id';
+import { Meta } from '@/models/entities/meta.js';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
+import { DB_MAX_NOTE_TEXT_LENGTH } from '@/misc/hard-limits.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireAdmin: true,
+} as const;
 
-	params: {
-		disableRegistration: {
-			validator: $.optional.nullable.bool,
-		},
-
-		disableLocalTimeline: {
-			validator: $.optional.nullable.bool,
-		},
-
-		disableGlobalTimeline: {
-			validator: $.optional.nullable.bool,
-		},
-
-		useStarForReactionFallback: {
-			validator: $.optional.nullable.bool,
-		},
-
-		pinnedUsers: {
-			validator: $.optional.nullable.arr($.str),
-		},
-
-		hiddenTags: {
-			validator: $.optional.nullable.arr($.str),
-		},
-
-		blockedHosts: {
-			validator: $.optional.nullable.arr($.str),
-		},
-
-		mascotImageUrl: {
-			validator: $.optional.nullable.str,
-		},
-
-		bannerUrl: {
-			validator: $.optional.nullable.str,
-		},
-
-		errorImageUrl: {
-			validator: $.optional.nullable.str,
-		},
-
-		iconUrl: {
-			validator: $.optional.nullable.str,
-		},
-
-		backgroundImageUrl: {
-			validator: $.optional.nullable.str,
-		},
-
-		logoImageUrl: {
-			validator: $.optional.nullable.str,
-		},
-
-		name: {
-			validator: $.optional.nullable.str,
-		},
-
-		description: {
-			validator: $.optional.nullable.str,
-		},
-
-		maxNoteTextLength: {
-			validator: $.optional.num.min(0).max(DB_MAX_NOTE_TEXT_LENGTH),
-		},
-
-		localDriveCapacityMb: {
-			validator: $.optional.num.min(0),
-		},
-
-		remoteDriveCapacityMb: {
-			validator: $.optional.num.min(0),
-		},
-
-		cacheRemoteFiles: {
-			validator: $.optional.bool,
-		},
-
-		proxyRemoteFiles: {
-			validator: $.optional.bool,
-		},
-
-		emailRequiredForSignup: {
-			validator: $.optional.bool,
-		},
-
-		enableHcaptcha: {
-			validator: $.optional.bool,
-		},
-
-		hcaptchaSiteKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		hcaptchaSecretKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		enableRecaptcha: {
-			validator: $.optional.bool,
-		},
-
-		recaptchaSiteKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		recaptchaSecretKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		proxyAccountId: {
-			validator: $.optional.nullable.type(ID),
-		},
-
-		maintainerName: {
-			validator: $.optional.nullable.str,
-		},
-
-		maintainerEmail: {
-			validator: $.optional.nullable.str,
-		},
-
-		pinnedPages: {
-			validator: $.optional.arr($.str),
-		},
-
-		pinnedClipId: {
-			validator: $.optional.nullable.type(ID),
-		},
-
-		langs: {
-			validator: $.optional.arr($.str),
-		},
-
-		summalyProxy: {
-			validator: $.optional.nullable.str,
-		},
-
-		deeplAuthKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		deeplIsPro: {
-			validator: $.optional.bool,
-		},
-
-		enableTwitterIntegration: {
-			validator: $.optional.bool,
-		},
-
-		twitterConsumerKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		twitterConsumerSecret: {
-			validator: $.optional.nullable.str,
-		},
-
-		enableGithubIntegration: {
-			validator: $.optional.bool,
-		},
-
-		githubClientId: {
-			validator: $.optional.nullable.str,
-		},
-
-		githubClientSecret: {
-			validator: $.optional.nullable.str,
-		},
-
-		enableDiscordIntegration: {
-			validator: $.optional.bool,
-		},
-
-		discordClientId: {
-			validator: $.optional.nullable.str,
-		},
-
-		discordClientSecret: {
-			validator: $.optional.nullable.str,
-		},
-
-		enableEmail: {
-			validator: $.optional.bool,
-		},
-
-		email: {
-			validator: $.optional.nullable.str,
-		},
-
-		smtpSecure: {
-			validator: $.optional.bool,
-		},
-
-		smtpHost: {
-			validator: $.optional.nullable.str,
-		},
-
-		smtpPort: {
-			validator: $.optional.nullable.num,
-		},
-
-		smtpUser: {
-			validator: $.optional.nullable.str,
-		},
-
-		smtpPass: {
-			validator: $.optional.nullable.str,
-		},
-
-		enableServiceWorker: {
-			validator: $.optional.bool,
-		},
-
-		swPublicKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		swPrivateKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		tosUrl: {
-			validator: $.optional.nullable.str,
-		},
-
-		repositoryUrl: {
-			validator: $.optional.str,
-		},
-
-		feedbackUrl: {
-			validator: $.optional.str,
-		},
-
-		useObjectStorage: {
-			validator: $.optional.bool,
-		},
-
-		objectStorageBaseUrl: {
-			validator: $.optional.nullable.str,
-		},
-
-		objectStorageBucket: {
-			validator: $.optional.nullable.str,
-		},
-
-		objectStoragePrefix: {
-			validator: $.optional.nullable.str,
-		},
-
-		objectStorageEndpoint: {
-			validator: $.optional.nullable.str,
-		},
-
-		objectStorageRegion: {
-			validator: $.optional.nullable.str,
-		},
-
-		objectStoragePort: {
-			validator: $.optional.nullable.num,
-		},
-
-		objectStorageAccessKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		objectStorageSecretKey: {
-			validator: $.optional.nullable.str,
-		},
-
-		objectStorageUseSSL: {
-			validator: $.optional.bool,
-		},
-
-		objectStorageUseProxy: {
-			validator: $.optional.bool,
-		},
-
-		objectStorageSetPublicRead: {
-			validator: $.optional.bool,
-		},
-
-		objectStorageS3ForcePathStyle: {
-			validator: $.optional.bool,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		disableRegistration: { type: 'boolean', nullable: true },
+		disableLocalTimeline: { type: 'boolean', nullable: true },
+		disableGlobalTimeline: { type: 'boolean', nullable: true },
+		useStarForReactionFallback: { type: 'boolean', nullable: true },
+		pinnedUsers: { type: 'array', nullable: true, items: {
+			type: 'string',
+		} },
+		hiddenTags: { type: 'array', nullable: true, items: {
+			type: 'string',
+		} },
+		blockedHosts: { type: 'array', nullable: true, items: {
+			type: 'string',
+		} },
+		themeColor: { type: 'string', nullable: true },
+		mascotImageUrl: { type: 'string', nullable: true },
+		bannerUrl: { type: 'string', nullable: true },
+		errorImageUrl: { type: 'string', nullable: true },
+		iconUrl: { type: 'string', nullable: true },
+		backgroundImageUrl: { type: 'string', nullable: true },
+		logoImageUrl: { type: 'string', nullable: true },
+		name: { type: 'string', nullable: true },
+		description: { type: 'string', nullable: true },
+		defaultLightTheme: { type: 'string', nullable: true },
+		defaultDarkTheme: { type: 'string', nullable: true },
+		localDriveCapacityMb: { type: 'integer' },
+		remoteDriveCapacityMb: { type: 'integer' },
+		cacheRemoteFiles: { type: 'boolean' },
+		emailRequiredForSignup: { type: 'boolean' },
+		enableHcaptcha: { type: 'boolean' },
+		hcaptchaSiteKey: { type: 'string', nullable: true },
+		hcaptchaSecretKey: { type: 'string', nullable: true },
+		enableRecaptcha: { type: 'boolean' },
+		recaptchaSiteKey: { type: 'string', nullable: true },
+		recaptchaSecretKey: { type: 'string', nullable: true },
+		proxyAccountId: { type: 'string', format: 'misskey:id', nullable: true },
+		maintainerName: { type: 'string', nullable: true },
+		maintainerEmail: { type: 'string', nullable: true },
+		pinnedPages: { type: 'array', items: {
+			type: 'string',
+		} },
+		pinnedClipId: { type: 'string', format: 'misskey:id', nullable: true },
+		langs: { type: 'array', items: {
+			type: 'string',
+		} },
+		summalyProxy: { type: 'string', nullable: true },
+		deeplAuthKey: { type: 'string', nullable: true },
+		deeplIsPro: { type: 'boolean' },
+		enableTwitterIntegration: { type: 'boolean' },
+		twitterConsumerKey: { type: 'string', nullable: true },
+		twitterConsumerSecret: { type: 'string', nullable: true },
+		enableGithubIntegration: { type: 'boolean' },
+		githubClientId: { type: 'string', nullable: true },
+		githubClientSecret: { type: 'string', nullable: true },
+		enableDiscordIntegration: { type: 'boolean' },
+		discordClientId: { type: 'string', nullable: true },
+		discordClientSecret: { type: 'string', nullable: true },
+		enableEmail: { type: 'boolean' },
+		email: { type: 'string', nullable: true },
+		smtpSecure: { type: 'boolean' },
+		smtpHost: { type: 'string', nullable: true },
+		smtpPort: { type: 'integer', nullable: true },
+		smtpUser: { type: 'string', nullable: true },
+		smtpPass: { type: 'string', nullable: true },
+		enableServiceWorker: { type: 'boolean' },
+		swPublicKey: { type: 'string', nullable: true },
+		swPrivateKey: { type: 'string', nullable: true },
+		tosUrl: { type: 'string', nullable: true },
+		repositoryUrl: { type: 'string' },
+		feedbackUrl: { type: 'string' },
+		useObjectStorage: { type: 'boolean' },
+		objectStorageBaseUrl: { type: 'string', nullable: true },
+		objectStorageBucket: { type: 'string', nullable: true },
+		objectStoragePrefix: { type: 'string', nullable: true },
+		objectStorageEndpoint: { type: 'string', nullable: true },
+		objectStorageRegion: { type: 'string', nullable: true },
+		objectStoragePort: { type: 'integer', nullable: true },
+		objectStorageAccessKey: { type: 'string', nullable: true },
+		objectStorageSecretKey: { type: 'string', nullable: true },
+		objectStorageUseSSL: { type: 'boolean' },
+		objectStorageUseProxy: { type: 'boolean' },
+		objectStorageSetPublicRead: { type: 'boolean' },
+		objectStorageS3ForcePathStyle: { type: 'boolean' },
 	},
+	required: [],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const set = {} as Partial<Meta>;
 
 	if (typeof ps.disableRegistration === 'boolean') {
@@ -331,6 +132,10 @@ export default define(meta, async (ps, me) => {
 		set.blockedHosts = ps.blockedHosts.filter(Boolean);
 	}
 
+	if (ps.themeColor !== undefined) {
+		set.themeColor = ps.themeColor;
+	}
+
 	if (ps.mascotImageUrl !== undefined) {
 		set.mascotImageUrl = ps.mascotImageUrl;
 	}
@@ -359,8 +164,12 @@ export default define(meta, async (ps, me) => {
 		set.description = ps.description;
 	}
 
-	if (ps.maxNoteTextLength) {
-		set.maxNoteTextLength = ps.maxNoteTextLength;
+	if (ps.defaultLightTheme !== undefined) {
+		set.defaultLightTheme = ps.defaultLightTheme;
+	}
+
+	if (ps.defaultDarkTheme !== undefined) {
+		set.defaultDarkTheme = ps.defaultDarkTheme;
 	}
 
 	if (ps.localDriveCapacityMb !== undefined) {
@@ -375,10 +184,6 @@ export default define(meta, async (ps, me) => {
 		set.cacheRemoteFiles = ps.cacheRemoteFiles;
 	}
 
-	if (ps.proxyRemoteFiles !== undefined) {
-		set.proxyRemoteFiles = ps.proxyRemoteFiles;
-	}
-
 	if (ps.emailRequiredForSignup !== undefined) {
 		set.emailRequiredForSignup = ps.emailRequiredForSignup;
 	}
diff --git a/packages/backend/src/server/api/endpoints/admin/vacuum.ts b/packages/backend/src/server/api/endpoints/admin/vacuum.ts
index 4229ef0d29..4c04e019da 100644
--- a/packages/backend/src/server/api/endpoints/admin/vacuum.ts
+++ b/packages/backend/src/server/api/endpoints/admin/vacuum.ts
@@ -1,26 +1,25 @@
-import $ from 'cafy';
-import define from '../../define';
+import define from '../../define.js';
 import { getConnection } from 'typeorm';
-import { insertModerationLog } from '@/services/insert-moderation-log';
+import { insertModerationLog } from '@/services/insert-moderation-log.js';
 
 export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
 	requireModerator: true,
+} as const;
 
-	params: {
-		full: {
-			validator: $.bool,
-		},
-		analyze: {
-			validator: $.bool,
-		},
+export const paramDef = {
+	type: 'object',
+	properties: {
+		full: { type: 'boolean' },
+		analyze: { type: 'boolean' },
 	},
+	required: ['full', 'analyze'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, me) => {
+export default define(meta, paramDef, async (ps, me) => {
 	const params: string[] = [];
 
 	if (ps.full) {