diff --git a/packages/backend/src/server/api/endpoints/charts/user/following.ts b/packages/backend/src/server/api/endpoints/charts/user/following.ts
index 3f50918fa7..a6cc6ae8cc 100644
--- a/packages/backend/src/server/api/endpoints/charts/user/following.ts
+++ b/packages/backend/src/server/api/endpoints/charts/user/following.ts
@@ -1,36 +1,15 @@
 import { Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import { getJsonSchema } from '@/core/chart/core.js';
 import PerUserFollowingChart from '@/core/chart/charts/per-user-following.js';
-import { schema } from '@/core/chart/charts/entities/per-user-following.js';
-
-export const meta = {
-	tags: ['charts', 'users', 'following'],
-
-	res: getJsonSchema(schema),
-
-	allowGet: true,
-	cacheSec: 60 * 60,
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		span: { type: 'string', enum: ['day', 'hour'] },
-		limit: { type: 'integer', minimum: 1, maximum: 500, default: 30 },
-		offset: { type: 'integer', nullable: true, default: null },
-		userId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['span', 'userId'],
-} as const;
 
 // eslint-disable-next-line import/no-default-export
 @Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
+export default class extends Endpoint<'charts/user/following'> {
+	name = 'charts/user/following' as const;
 	constructor(
 		private perUserFollowingChart: PerUserFollowingChart,
 	) {
-		super(meta, paramDef, async (ps, me) => {
+		super(async (ps, me) => {
 			return await this.perUserFollowingChart.getChart(ps.span, ps.limit, ps.offset ? new Date(ps.offset) : null, ps.userId);
 		});
 	}
diff --git a/packages/misskey-js/src/endpoints.ts b/packages/misskey-js/src/endpoints.ts
index 59a93549c4..618665f62a 100644
--- a/packages/misskey-js/src/endpoints.ts
+++ b/packages/misskey-js/src/endpoints.ts
@@ -2,7 +2,7 @@ import type { JSONSchema7 } from 'schema-type';
 import { IEndpointMeta } from './endpoints.types';
 import { localUsernameSchema, passwordSchema } from './schemas/user';
 import ms from 'ms';
-import { getJsonSchema } from './schemas';
+import { chartSchemaToJSONSchema } from './schemas';
 import { chartsSchemas } from './schemas/charts.js';
 
 export const endpoints = {
@@ -3005,7 +3005,27 @@ export const endpoints = {
 				},
 				required: ['span', 'userId'],
 			},
-			res: getJsonSchema(chartsSchemas.perUserDrive) satisfies JSONSchema7,
+			res: chartSchemaToJSONSchema(chartsSchemas.perUserDrive) satisfies JSONSchema7,
+		}],
+	},
+	'charts/user/following': {
+		tags: ['charts', 'users', 'following'],
+
+		allowGet: true,
+		cacheSec: 60 * 60,
+
+		defines: [{
+			req: {
+				type: 'object',
+				properties: {
+					span: { type: 'string', enum: ['day', 'hour'] },
+					limit: { type: 'integer', minimum: 1, maximum: 500, default: 30 },
+					offset: { type: 'integer', nullable: true, default: null },
+					userId: { type: 'string', format: 'misskey:id' },
+				},
+				required: ['span', 'userId'],
+			},
+			res: chartSchemaToJSONSchema(chartsSchemas.perUserFollowing) satisfies JSONSchema7,
 		}],
 	},
 	//#endregion
diff --git a/packages/misskey-js/src/schemas.ts b/packages/misskey-js/src/schemas.ts
index efd507dbee..6475fdc15b 100644
--- a/packages/misskey-js/src/schemas.ts
+++ b/packages/misskey-js/src/schemas.ts
@@ -157,7 +157,7 @@ type ToJsonSchema<S> = {
 	required: (keyof S)[];
 };
 
-export function getJsonSchema<S extends ChartSchema>(schema: S): ToJsonSchema<Unflatten<ChartResult<S>>> {
+export function chartSchemaToJSONSchema<S extends ChartSchema>(schema: S): ToJsonSchema<Unflatten<ChartResult<S>>> {
 	const jsonSchema = {
 		type: 'object',
 		properties: {} as Record<string, unknown>,