diff --git a/packages/backend/server/src/modules/features/feature.ts b/packages/backend/server/src/modules/features/feature.ts
index f0bd2a763c..b04654f8d6 100644
--- a/packages/backend/server/src/modules/features/feature.ts
+++ b/packages/backend/server/src/modules/features/feature.ts
@@ -19,7 +19,20 @@ class FeatureConfig {
   }
 }
 
+export class CopilotFeatureConfig extends FeatureConfig {
+  override config!: Feature & { feature: FeatureType.Copilot };
+  constructor(data: any) {
+    super(data);
+
+    if (this.config.feature !== FeatureType.Copilot) {
+      throw new Error('Invalid feature config: type is not Copilot');
+    }
+  }
+}
+
 export class EarlyAccessFeatureConfig extends FeatureConfig {
+  override config!: Feature & { feature: FeatureType.EarlyAccess };
+
   constructor(data: any) {
     super(data);
 
@@ -39,13 +52,15 @@ export class EarlyAccessFeatureConfig extends FeatureConfig {
 }
 
 const FeatureConfigMap = {
+  [FeatureType.Copilot]: CopilotFeatureConfig,
   [FeatureType.EarlyAccess]: EarlyAccessFeatureConfig,
 };
 
-const FeatureCache = new Map<
-  number,
-  InstanceType<(typeof FeatureConfigMap)[FeatureType]>
->();
+export type FeatureConfigType<F extends FeatureType> = InstanceType<
+  (typeof FeatureConfigMap)[F]
+>;
+
+const FeatureCache = new Map<number, FeatureConfigType<FeatureType>>();
 
 export async function getFeature(prisma: PrismaService, featureId: number) {
   const cachedQuota = FeatureCache.get(featureId);
diff --git a/packages/backend/server/src/modules/features/service.ts b/packages/backend/server/src/modules/features/service.ts
index beed9dc4fb..1dae214a08 100644
--- a/packages/backend/server/src/modules/features/service.ts
+++ b/packages/backend/server/src/modules/features/service.ts
@@ -2,7 +2,7 @@ import { Injectable } from '@nestjs/common';
 
 import { PrismaService } from '../../prisma';
 import { UserType } from '../users/types';
-import { getFeature } from './feature';
+import { FeatureConfigType, getFeature } from './feature';
 import { FeatureKind, FeatureType } from './types';
 
 @Injectable()
@@ -28,7 +28,9 @@ export class FeatureService {
     );
   }
 
-  async getFeature(feature: FeatureType) {
+  async getFeature<F extends FeatureType>(
+    feature: F
+  ): Promise<FeatureConfigType<F> | undefined> {
     const data = await this.prisma.features.findFirst({
       where: {
         feature,
@@ -40,7 +42,7 @@ export class FeatureService {
       },
     });
     if (data) {
-      return getFeature(this.prisma, data.id);
+      return getFeature(this.prisma, data.id) as FeatureConfigType<F>;
     }
     return undefined;
   }
diff --git a/packages/backend/server/src/modules/features/types/common.ts b/packages/backend/server/src/modules/features/types/common.ts
new file mode 100644
index 0000000000..448ff156af
--- /dev/null
+++ b/packages/backend/server/src/modules/features/types/common.ts
@@ -0,0 +1,4 @@
+export enum FeatureType {
+  Copilot = 'copilot',
+  EarlyAccess = 'early_access',
+}
diff --git a/packages/backend/server/src/modules/features/types/copilot.ts b/packages/backend/server/src/modules/features/types/copilot.ts
new file mode 100644
index 0000000000..0a58096354
--- /dev/null
+++ b/packages/backend/server/src/modules/features/types/copilot.ts
@@ -0,0 +1,8 @@
+import { z } from 'zod';
+
+import { FeatureType } from './common';
+
+export const featureCopilot = z.object({
+  feature: z.literal(FeatureType.Copilot),
+  configs: z.object({}),
+});
diff --git a/packages/backend/server/src/modules/features/types/early-access.ts b/packages/backend/server/src/modules/features/types/early-access.ts
new file mode 100644
index 0000000000..a3fb3a19fb
--- /dev/null
+++ b/packages/backend/server/src/modules/features/types/early-access.ts
@@ -0,0 +1,24 @@
+import { URL } from 'node:url';
+
+import { z } from 'zod';
+
+import { FeatureType } from './common';
+
+function checkHostname(host: string) {
+  try {
+    return new URL(`https://${host}`).hostname === host;
+  } catch (_) {
+    return false;
+  }
+}
+
+export const featureEarlyAccess = z.object({
+  feature: z.literal(FeatureType.EarlyAccess),
+  configs: z.object({
+    whitelist: z
+      .string()
+      .startsWith('@')
+      .refine(domain => checkHostname(domain.slice(1)))
+      .array(),
+  }),
+});
diff --git a/packages/backend/server/src/modules/features/types.ts b/packages/backend/server/src/modules/features/types/index.ts
similarity index 58%
rename from packages/backend/server/src/modules/features/types.ts
rename to packages/backend/server/src/modules/features/types/index.ts
index 007463b07d..2f445b43ec 100644
--- a/packages/backend/server/src/modules/features/types.ts
+++ b/packages/backend/server/src/modules/features/types/index.ts
@@ -1,7 +1,9 @@
-import { URL } from 'node:url';
-
 import { z } from 'zod';
 
+import { FeatureType } from './common';
+import { featureCopilot } from './copilot';
+import { featureEarlyAccess } from './early-access';
+
 /// ======== common schema ========
 
 export enum FeatureKind {
@@ -20,30 +22,13 @@ export type CommonFeature = z.infer<typeof commonFeatureSchema>;
 
 /// ======== feature define ========
 
-export enum FeatureType {
-  EarlyAccess = 'early_access',
-}
-
-function checkHostname(host: string) {
-  try {
-    return new URL(`https://${host}`).hostname === host;
-  } catch (_) {
-    return false;
-  }
-}
-
-const featureEarlyAccess = z.object({
-  feature: z.literal(FeatureType.EarlyAccess),
-  configs: z.object({
-    whitelist: z
-      .string()
-      .startsWith('@')
-      .refine(domain => checkHostname(domain.slice(1)))
-      .array(),
-  }),
-});
-
 export const Features: Feature[] = [
+  {
+    feature: FeatureType.Copilot,
+    type: FeatureKind.Feature,
+    version: 1,
+    configs: {},
+  },
   {
     feature: FeatureType.EarlyAccess,
     type: FeatureKind.Feature,
@@ -60,6 +45,8 @@ export const FeatureSchema = commonFeatureSchema
   .extend({
     type: z.literal(FeatureKind.Feature),
   })
-  .and(z.discriminatedUnion('feature', [featureEarlyAccess]));
+  .and(z.discriminatedUnion('feature', [featureCopilot, featureEarlyAccess]));
 
 export type Feature = z.infer<typeof FeatureSchema>;
+
+export { FeatureType };
diff --git a/packages/backend/server/src/modules/workspaces/index.ts b/packages/backend/server/src/modules/workspaces/index.ts
index ecb09cb73a..6585c6e9d0 100644
--- a/packages/backend/server/src/modules/workspaces/index.ts
+++ b/packages/backend/server/src/modules/workspaces/index.ts
@@ -27,4 +27,5 @@ import {
   exports: [PermissionService],
 })
 export class WorkspaceModule {}
-export { InvitationType, WorkspaceType } from './resolvers';
+
+export type { InvitationType, WorkspaceType } from './types';
diff --git a/packages/backend/server/src/modules/workspaces/permission.ts b/packages/backend/server/src/modules/workspaces/permission.ts
index 524ab37e39..1248075b1c 100644
--- a/packages/backend/server/src/modules/workspaces/permission.ts
+++ b/packages/backend/server/src/modules/workspaces/permission.ts
@@ -34,6 +34,9 @@ export class PermissionService {
           accepted: true,
           type: Permission.Owner,
         },
+        select: {
+          workspaceId: true,
+        },
       })
       .then(data => data.map(({ workspaceId }) => workspaceId));
   }
diff --git a/packages/backend/server/src/modules/workspaces/resolvers/blob.ts b/packages/backend/server/src/modules/workspaces/resolvers/blob.ts
index 6d86c3b5a9..d2a03994ac 100644
--- a/packages/backend/server/src/modules/workspaces/resolvers/blob.ts
+++ b/packages/backend/server/src/modules/workspaces/resolvers/blob.ts
@@ -19,8 +19,7 @@ import { QuotaManagementService } from '../../quota';
 import { WorkspaceBlobStorage } from '../../storage';
 import { UserType } from '../../users';
 import { PermissionService } from '../permission';
-import { Permission } from '../types';
-import { WorkspaceBlobSizes, WorkspaceType } from './workspace';
+import { Permission, WorkspaceBlobSizes, WorkspaceType } from '../types';
 
 @UseGuards(CloudThrottlerGuard)
 @Auth()
diff --git a/packages/backend/server/src/modules/workspaces/resolvers/history.ts b/packages/backend/server/src/modules/workspaces/resolvers/history.ts
index 77a3415bd7..e7940f9df1 100644
--- a/packages/backend/server/src/modules/workspaces/resolvers/history.ts
+++ b/packages/backend/server/src/modules/workspaces/resolvers/history.ts
@@ -18,8 +18,7 @@ import { Auth, CurrentUser } from '../../auth';
 import { DocHistoryManager } from '../../doc/history';
 import { UserType } from '../../users';
 import { PermissionService } from '../permission';
-import { Permission } from '../types';
-import { WorkspaceType } from './workspace';
+import { Permission, WorkspaceType } from '../types';
 
 @ObjectType()
 class DocHistoryType implements Partial<SnapshotHistory> {
diff --git a/packages/backend/server/src/modules/workspaces/resolvers/page.ts b/packages/backend/server/src/modules/workspaces/resolvers/page.ts
index deb138c98c..c37bc4049c 100644
--- a/packages/backend/server/src/modules/workspaces/resolvers/page.ts
+++ b/packages/backend/server/src/modules/workspaces/resolvers/page.ts
@@ -17,8 +17,7 @@ import { DocID } from '../../../utils/doc';
 import { Auth, CurrentUser } from '../../auth';
 import { UserType } from '../../users';
 import { PermissionService, PublicPageMode } from '../permission';
-import { Permission } from '../types';
-import { WorkspaceType } from './workspace';
+import { Permission, WorkspaceType } from '../types';
 
 registerEnumType(PublicPageMode, {
   name: 'PublicPageMode',
diff --git a/packages/backend/server/src/modules/workspaces/resolvers/workspace.ts b/packages/backend/server/src/modules/workspaces/resolvers/workspace.ts
index 71039e9857..eb772a66b3 100644
--- a/packages/backend/server/src/modules/workspaces/resolvers/workspace.ts
+++ b/packages/backend/server/src/modules/workspaces/resolvers/workspace.ts
@@ -7,23 +7,14 @@ import {
 } from '@nestjs/common';
 import {
   Args,
-  Field,
-  Float,
-  ID,
-  InputType,
   Int,
   Mutation,
-  ObjectType,
-  OmitType,
   Parent,
-  PartialType,
-  PickType,
   Query,
-  registerEnumType,
   ResolveField,
   Resolver,
 } from '@nestjs/graphql';
-import type { User, Workspace } from '@prisma/client';
+import type { User } from '@prisma/client';
 import { getStreamAsBuffer } from 'get-stream';
 import GraphQLUpload from 'graphql-upload/GraphQLUpload.mjs';
 import { applyUpdate, Doc } from 'yjs';
@@ -38,91 +29,15 @@ import { AuthService } from '../../auth/service';
 import { WorkspaceBlobStorage } from '../../storage';
 import { UsersService, UserType } from '../../users';
 import { PermissionService } from '../permission';
-import { Permission } from '../types';
+import {
+  InvitationType,
+  InviteUserType,
+  Permission,
+  UpdateWorkspaceInput,
+  WorkspaceType,
+} from '../types';
 import { defaultWorkspaceAvatar } from '../utils';
 
-registerEnumType(Permission, {
-  name: 'Permission',
-  description: 'User permission in workspace',
-});
-
-@ObjectType()
-export class InviteUserType extends OmitType(
-  PartialType(UserType),
-  ['id'],
-  ObjectType
-) {
-  @Field(() => ID)
-  id!: string;
-
-  @Field(() => Permission, { description: 'User permission in workspace' })
-  permission!: Permission;
-
-  @Field({ description: 'Invite id' })
-  inviteId!: string;
-
-  @Field({ description: 'User accepted' })
-  accepted!: boolean;
-}
-
-@ObjectType()
-export class WorkspaceType implements Partial<Workspace> {
-  @Field(() => ID)
-  id!: string;
-
-  @Field({ description: 'is Public workspace' })
-  public!: boolean;
-
-  @Field({ description: 'Workspace created date' })
-  createdAt!: Date;
-
-  @Field(() => [InviteUserType], {
-    description: 'Members of workspace',
-  })
-  members!: InviteUserType[];
-}
-
-@ObjectType()
-export class InvitationWorkspaceType {
-  @Field(() => ID)
-  id!: string;
-
-  @Field({ description: 'Workspace name' })
-  name!: string;
-
-  @Field(() => String, {
-    // nullable: true,
-    description: 'Base64 encoded avatar',
-  })
-  avatar!: string;
-}
-
-@ObjectType()
-export class WorkspaceBlobSizes {
-  @Field(() => Float)
-  size!: number;
-}
-
-@ObjectType()
-export class InvitationType {
-  @Field({ description: 'Workspace information' })
-  workspace!: InvitationWorkspaceType;
-  @Field({ description: 'User information' })
-  user!: UserType;
-  @Field({ description: 'Invitee information' })
-  invitee!: UserType;
-}
-
-@InputType()
-export class UpdateWorkspaceInput extends PickType(
-  PartialType(WorkspaceType),
-  ['public'],
-  InputType
-) {
-  @Field(() => ID)
-  id!: string;
-}
-
 /**
  * Workspace resolver
  * Public apis rate limit: 10 req/m
diff --git a/packages/backend/server/src/modules/workspaces/types.ts b/packages/backend/server/src/modules/workspaces/types.ts
index a86fcb6c2b..c3492f4230 100644
--- a/packages/backend/server/src/modules/workspaces/types.ts
+++ b/packages/backend/server/src/modules/workspaces/types.ts
@@ -1,6 +1,103 @@
+import {
+  Field,
+  Float,
+  ID,
+  InputType,
+  ObjectType,
+  OmitType,
+  PartialType,
+  PickType,
+  registerEnumType,
+} from '@nestjs/graphql';
+import type { Workspace } from '@prisma/client';
+
+import { UserType } from '../users/types';
+
 export enum Permission {
   Read = 0,
   Write = 1,
   Admin = 10,
   Owner = 99,
 }
+
+registerEnumType(Permission, {
+  name: 'Permission',
+  description: 'User permission in workspace',
+});
+
+@ObjectType()
+export class InviteUserType extends OmitType(
+  PartialType(UserType),
+  ['id'],
+  ObjectType
+) {
+  @Field(() => ID)
+  id!: string;
+
+  @Field(() => Permission, { description: 'User permission in workspace' })
+  permission!: Permission;
+
+  @Field({ description: 'Invite id' })
+  inviteId!: string;
+
+  @Field({ description: 'User accepted' })
+  accepted!: boolean;
+}
+
+@ObjectType()
+export class WorkspaceType implements Partial<Workspace> {
+  @Field(() => ID)
+  id!: string;
+
+  @Field({ description: 'is Public workspace' })
+  public!: boolean;
+
+  @Field({ description: 'Workspace created date' })
+  createdAt!: Date;
+
+  @Field(() => [InviteUserType], {
+    description: 'Members of workspace',
+  })
+  members!: InviteUserType[];
+}
+
+@ObjectType()
+export class InvitationWorkspaceType {
+  @Field(() => ID)
+  id!: string;
+
+  @Field({ description: 'Workspace name' })
+  name!: string;
+
+  @Field(() => String, {
+    // nullable: true,
+    description: 'Base64 encoded avatar',
+  })
+  avatar!: string;
+}
+
+@ObjectType()
+export class WorkspaceBlobSizes {
+  @Field(() => Float)
+  size!: number;
+}
+
+@ObjectType()
+export class InvitationType {
+  @Field({ description: 'Workspace information' })
+  workspace!: InvitationWorkspaceType;
+  @Field({ description: 'User information' })
+  user!: UserType;
+  @Field({ description: 'Invitee information' })
+  invitee!: UserType;
+}
+
+@InputType()
+export class UpdateWorkspaceInput extends PickType(
+  PartialType(WorkspaceType),
+  ['public'],
+  InputType
+) {
+  @Field(() => ID)
+  id!: string;
+}