13 files changed, 120 insertions, 14 deletions
diff --git a/src/server/api/endpoints/i/favorites.ts b/src/server/api/endpoints/i/favorites.ts
index 2c25250bea..aad706545a 100644
--- a/src/server/api/endpoints/i/favorites.ts
+++ b/src/server/api/endpoints/i/favorites.ts
@@ -14,7 +14,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'favorites-read',
+	kind: 'read:favorites',
 
 	params: {
 		limit: {
diff --git a/src/server/api/endpoints/messaging/history.ts b/src/server/api/endpoints/messaging/history.ts
index c12378eb7e..c2d746e481 100644
--- a/src/server/api/endpoints/messaging/history.ts
+++ b/src/server/api/endpoints/messaging/history.ts
@@ -14,7 +14,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'messaging-read',
+	kind: 'read:messaging',
 
 	params: {
 		limit: {
diff --git a/src/server/api/endpoints/messaging/messages.ts b/src/server/api/endpoints/messaging/messages.ts
index 02c57b8d03..add21e5f19 100644
--- a/src/server/api/endpoints/messaging/messages.ts
+++ b/src/server/api/endpoints/messaging/messages.ts
@@ -17,7 +17,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'messaging-read',
+	kind: 'read:messaging',
 
 	params: {
 		userId: {
diff --git a/src/server/api/endpoints/messaging/messages/create.ts b/src/server/api/endpoints/messaging/messages/create.ts
index 2c7e5ad2d9..30ac0849a3 100644
--- a/src/server/api/endpoints/messaging/messages/create.ts
+++ b/src/server/api/endpoints/messaging/messages/create.ts
@@ -20,7 +20,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'messaging-write',
+	kind: 'write:messaging',
 
 	params: {
 		userId: {
diff --git a/src/server/api/endpoints/messaging/messages/delete.ts b/src/server/api/endpoints/messaging/messages/delete.ts
index 9f55caba62..6a896cd8d1 100644
--- a/src/server/api/endpoints/messaging/messages/delete.ts
+++ b/src/server/api/endpoints/messaging/messages/delete.ts
@@ -18,7 +18,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'messaging-write',
+	kind: 'write:messaging',
 
 	limit: {
 		duration: ms('1hour'),
diff --git a/src/server/api/endpoints/messaging/messages/read.ts b/src/server/api/endpoints/messaging/messages/read.ts
index 24a28285bf..50b7f39870 100644
--- a/src/server/api/endpoints/messaging/messages/read.ts
+++ b/src/server/api/endpoints/messaging/messages/read.ts
@@ -15,7 +15,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'messaging-write',
+	kind: 'write:messaging',
 
 	params: {
 		messageId: {
diff --git a/src/server/api/endpoints/notes/favorites/create.ts b/src/server/api/endpoints/notes/favorites/create.ts
index 7e04637758..bb0c9594bb 100644
--- a/src/server/api/endpoints/notes/favorites/create.ts
+++ b/src/server/api/endpoints/notes/favorites/create.ts
@@ -18,7 +18,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'favorite-write',
+	kind: 'write:favorites',
 
 	params: {
 		noteId: {
diff --git a/src/server/api/endpoints/notes/favorites/delete.ts b/src/server/api/endpoints/notes/favorites/delete.ts
index a889c84d4d..49f7631773 100644
--- a/src/server/api/endpoints/notes/favorites/delete.ts
+++ b/src/server/api/endpoints/notes/favorites/delete.ts
@@ -17,7 +17,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'favorite-write',
+	kind: 'write:favorites',
 
 	params: {
 		noteId: {
diff --git a/src/server/api/endpoints/notes/polls/vote.ts b/src/server/api/endpoints/notes/polls/vote.ts
index e8b8b66da5..d13405597d 100644
--- a/src/server/api/endpoints/notes/polls/vote.ts
+++ b/src/server/api/endpoints/notes/polls/vote.ts
@@ -26,7 +26,7 @@ export const meta = {
 
 	requireCredential: true,
 
-	kind: 'vote-write',
+	kind: 'write:votes',
 
 	params: {
 		noteId: {
diff --git a/src/server/api/endpoints/permissions.ts b/src/server/api/endpoints/permissions.ts
new file mode 100644
index 0000000000..347e1e3f2e
--- /dev/null
+++ b/src/server/api/endpoints/permissions.ts
@@ -0,0 +1,29 @@
+import define from '../define';
+import { kindsList } from '../kinds';
+
+export const meta = {
+	stability: 'stable',
+
+	desc: {
+		'ja-JP': 'パーミッションの一覧を返します。',
+		'en-US': 'Get the list of permissons.'
+	},
+
+	tags: ['meta'],
+
+	requireCredential: false,
+
+	params: {
+	},
+
+	res: {
+		type: 'array',
+		items: {
+			type: 'string',
+		}
+	},
+};
+
+export default define(meta, async () => {
+	return kindsList;
+});
diff --git a/src/server/api/kinds.ts b/src/server/api/kinds.ts
new file mode 100644
index 0000000000..d496fa6919
--- /dev/null
+++ b/src/server/api/kinds.ts
@@ -0,0 +1,58 @@
+import endpoints from './endpoints';
+import * as locale from '../../../locales/';
+import { fromEntries } from '../../prelude/array';
+
+export const kindsList = [
+	'read:account',
+	'write:account',
+	'read:blocks',
+	'write:blocks',
+	'read:drive',
+	'write:drive',
+	'read:favorites',
+	'write:favorites',
+	'read:following',
+	'write:following',
+	'read:messaging',
+	'write:messaging',
+	'read:mutes',
+	'write:mutes',
+	'write:notes',
+	'read:notifications',
+	'write:notifications',
+	'read:reactions',
+	'write:reactions',
+	'write:votes'
+];
+
+export interface IKindInfo {
+	endpoints: string[];
+	descs: { [x: string]: string; };
+}
+
+export function kinds() {
+	const kinds = fromEntries(
+		kindsList
+			.map(k => [k, {
+					endpoints: [],
+					descs: fromEntries(
+						Object.keys(locale)
+							.map(l => [l, locale[l].common.permissions[k] as string] as [string, string])
+						) as { [x: string]: string; }
+				}] as [ string, IKindInfo ])
+			) as { [x: string]: IKindInfo; };
+
+	const errors = [] as string[][];
+
+	for (const endpoint of endpoints.filter(ep => !ep.meta.secure)) {
+		if (endpoint.meta.kind) {
+			const kind = endpoint.meta.kind;
+			if (kind in kinds) kinds[kind].endpoints.push(endpoint.name);
+			else errors.push([kind, endpoint.name]);
+		}
+	}
+
+	if (errors.length > 0) throw Error('\n  ' + errors.map((e) => `Unknown kind (permission) "${e[0]}" found at ${e[1]}.`).join('\n  '));
+
+	return kinds;
+}
diff --git a/src/server/api/openapi/description.ts b/src/server/api/openapi/description.ts
index 04a0b4c719..b801c86387 100644
--- a/src/server/api/openapi/description.ts
+++ b/src/server/api/openapi/description.ts
@@ -1,6 +1,14 @@
 import config from '../../../config';
+import { IKindInfo, kinds } from '../kinds';
+
+export function getDescription(lang = 'ja-JP'): string {
+	const permissionTable = (Object.entries(kinds()) as [string, IKindInfo][])
+		.map(e => `|${e[0]}|${e[1].descs[lang]}|${e[1].endpoints.map(f => `[${f}](#operation/${f})`).join(', ')}|`)
+		.join('\n');
+
+	const descriptions = {
+		'ja-JP': `**Misskey is a decentralized microblogging platform.**
 
-export const description = `
 ## Usage
 **APIはすべてPOSTでリクエスト/レスポンスともにJSON形式です。**
 一部のAPIはリクエストに認証情報(APIキー)が必要です。リクエストの際に\`i\`というパラメータでAPIキーを添付してください。
@@ -44,4 +52,12 @@ APIキーの生成方法を擬似コードで表すと次のようになりま�
 \`\`\` js
 const i = sha256(userToken + secretKey);
 \`\`\`
-`;
+
+## Permissions
+|Permisson (kind)|Description|Endpoints|
+|:--|:--|:--|
+${permissionTable}
+`
+	} as { [x: string]: string };
+	return lang in descriptions ? descriptions[lang] : descriptions['ja-JP'];
+}
diff --git a/src/server/api/openapi/gen-spec.ts b/src/server/api/openapi/gen-spec.ts
index 915fb5a6a3..d194c6c8a8 100644
--- a/src/server/api/openapi/gen-spec.ts
+++ b/src/server/api/openapi/gen-spec.ts
@@ -3,7 +3,7 @@ import { Context } from 'cafy';
 import config from '../../../config';
 import { errors as basicErrors } from './errors';
 import { schemas } from './schemas';
-import { description } from './description';
+import { getDescription } from './description';
 import { convertOpenApiSchema } from '../../../misc/schema';
 
 export function genOpenapiSpec(lang = 'ja-JP') {
@@ -13,7 +13,7 @@ export function genOpenapiSpec(lang = 'ja-JP') {
 		info: {
 			version: 'v1',
 			title: 'Misskey API',
-			description: '**Misskey is a decentralized microblogging platform.**\n\n' + description,
+			description: getDescription(lang),
 			'x-logo': { url: '/assets/api-doc.png' }
 		},
 
@@ -110,7 +110,10 @@ export function genOpenapiSpec(lang = 'ja-JP') {
 
 		let desc = (endpoint.meta.desc ? endpoint.meta.desc[lang] : 'No description provided.') + '\n\n';
 		desc += `**Credential required**: *${endpoint.meta.requireCredential ? 'Yes' : 'No'}*`;
-		if (endpoint.meta.kind) desc += ` / **Permission**: *${endpoint.meta.kind}*`;
+		if (endpoint.meta.kind) {
+			const kind = endpoint.meta.kind;
+			desc += ` / **Permission**: *${kind}*`;
+		}
 
 		const info = {
 			operationId: endpoint.name,