1 files changed, 16 insertions, 22 deletions
diff --git a/packages/backend/src/server/api/endpoints/channels/create.ts b/packages/backend/src/server/api/endpoints/channels/create.ts
index 68cdf1143e..16456b9c01 100644
--- a/packages/backend/src/server/api/endpoints/channels/create.ts
+++ b/packages/backend/src/server/api/endpoints/channels/create.ts
@@ -1,10 +1,8 @@
-import $ from 'cafy';
-import define from '../../define';
-import { ApiError } from '../../error';
-import { Channels, DriveFiles } from '@/models/index';
-import { Channel } from '@/models/entities/channel';
-import { genId } from '@/misc/gen-id';
-import { ID } from '@/misc/cafy-id';
+import define from '../../define.js';
+import { ApiError } from '../../error.js';
+import { Channels, DriveFiles } from '@/models/index.js';
+import { Channel } from '@/models/entities/channel.js';
+import { genId } from '@/misc/gen-id.js';
 
 export const meta = {
 	tags: ['channels'],
@@ -13,20 +11,6 @@ export const meta = {
 
 	kind: 'write:channels',
 
-	params: {
-		name: {
-			validator: $.str.range(1, 128),
-		},
-
-		description: {
-			validator: $.nullable.optional.str.range(1, 2048),
-		},
-
-		bannerId: {
-			validator: $.nullable.optional.type(ID),
-		},
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -42,8 +26,18 @@ export const meta = {
 	},
 } as const;
 
+export const paramDef = {
+	type: 'object',
+	properties: {
+		name: { type: 'string', minLength: 1, maxLength: 128 },
+		description: { type: 'string', nullable: true, minLength: 1, maxLength: 2048 },
+		bannerId: { type: 'string', format: 'misskey:id', nullable: true },
+	},
+	required: ['name'],
+} 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) => {
 	let banner = null;
 	if (ps.bannerId != null) {
 		banner = await DriveFiles.findOne({