diff --git a/packages/core/src/libraries/hook.test.ts b/packages/core/src/libraries/hook.test.ts
new file mode 100644
index 000000000..09a4a83af
--- /dev/null
+++ b/packages/core/src/libraries/hook.test.ts
@@ -0,0 +1,89 @@
+import { Event } from '@logto/schemas';
+import { HookEvent } from '@logto/schemas/lib/models/hooks.js';
+import { mockEsm, mockEsmDefault } from '@logto/shared/esm';
+import type { InferModelType } from '@withtyped/server';
+import { got } from 'got';
+
+import modelRouters from '#src/model-routers/index.js';
+import { MockQueryClient } from '#src/test-utils/query-client.js';
+
+import type { Interaction } from './hook.js';
+
+const { jest } = import.meta;
+
+const queryClient = new MockQueryClient();
+const queryFunction = jest.fn();
+
+const url = 'https://logto.gg';
+const hook: InferModelType<typeof modelRouters.hook.model> = {
+  id: 'foo',
+  event: HookEvent.PostSignIn,
+  config: { headers: { bar: 'baz' }, url, retries: 3 },
+  createdAt: new Date(),
+};
+const readAll = jest
+  .spyOn(modelRouters.hook.client, 'readAll')
+  .mockResolvedValue({ rows: [hook], rowCount: 1 });
+
+// @ts-expect-error for testing
+const post = jest.spyOn(got, 'post').mockImplementation(jest.fn(() => ({ json: jest.fn() })));
+
+mockEsm('#src/queries/user.js', () => ({
+  findUserById: () => ({ id: 'user_id', username: 'user', extraField: 'not_ok' }),
+}));
+mockEsm('#src/queries/application.js', () => ({
+  findApplicationById: () => ({ id: 'app_id', extraField: 'not_ok' }),
+}));
+mockEsm('#src/connectors/index.js', () => ({
+  getLogtoConnectorById: () => ({ metadata: { id: 'connector_id', extraField: 'not_ok' } }),
+}));
+// eslint-disable-next-line unicorn/consistent-function-scoping
+mockEsmDefault('#src/env-set/create-query-client-by-env.js', () => () => queryClient);
+jest.spyOn(queryClient, 'query').mockImplementation(queryFunction);
+
+const { triggerInteractionHooksIfNeeded } = await import('./hook.js');
+
+describe('triggerInteractionHooksIfNeeded()', () => {
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('should return if no user ID found', async () => {
+    await triggerInteractionHooksIfNeeded({ event: Event.SignIn });
+
+    expect(queryFunction).not.toBeCalled();
+  });
+
+  it('should set correct payload when hook triggered', async () => {
+    jest.useFakeTimers().setSystemTime(100_000);
+
+    await triggerInteractionHooksIfNeeded(
+      { event: Event.SignIn, identifier: { connectorId: 'bar' } },
+      // @ts-expect-error for testing
+      {
+        jti: 'some_jti',
+        result: { login: { accountId: '123' } },
+        params: { client_id: 'some_client' },
+      } as Interaction
+    );
+
+    expect(readAll).toHaveBeenCalled();
+    expect(post).toHaveBeenCalledWith(url, {
+      headers: { 'user-agent': 'Logto (https://logto.io)', bar: 'baz' },
+      json: {
+        hookId: 'foo',
+        event: 'PostSignIn',
+        interactionEvent: 'SignIn',
+        sessionId: 'some_jti',
+        userId: '123',
+        user: { id: 'user_id', username: 'user' },
+        application: { id: 'app_id' },
+        connectors: [{ id: 'connector_id' }],
+        createdAt: new Date(100_000).toISOString(),
+      },
+      retry: { limit: 3 },
+      timeout: { request: 10_000 },
+    });
+    jest.useRealTimers();
+  });
+});
diff --git a/packages/core/src/libraries/hook.ts b/packages/core/src/libraries/hook.ts
index a07991691..3c8082b9d 100644
--- a/packages/core/src/libraries/hook.ts
+++ b/packages/core/src/libraries/hook.ts
@@ -1,5 +1,5 @@
 import { Event, userInfoSelectFields } from '@logto/schemas';
-import { HookEvent } from '@logto/schemas/models';
+import { HookEventPayload, HookEvent } from '@logto/schemas/models';
 import { trySafe } from '@logto/shared';
 import { conditional } from '@silverhand/essentials';
 import { got } from 'got';
@@ -17,19 +17,6 @@ const eventToHook: Record<Event, HookEvent> = {
   [Event.ForgotPassword]: HookEvent.PostResetPassword,
 };
 
-export type HookEventPayload = {
-  hookId: string;
-  event: HookEvent;
-  Event: Event;
-  createdAt: string;
-  sessionId?: string;
-  userAgent?: string;
-  userId?: string;
-  user?: Record<string, unknown>;
-  application?: Record<string, unknown>;
-  connectors?: Array<Record<string, unknown>>;
-};
-
 // TODO: replace `lodash.pick`
 const pick = <T, Keys extends Array<keyof T>>(
   object: T,
@@ -41,9 +28,11 @@ const pick = <T, Keys extends Array<keyof T>>(
   };
 };
 
+export type Interaction = Awaited<ReturnType<Provider['interactionDetails']>>;
+
 export const triggerInteractionHooksIfNeeded = async (
   interactionPayload: InteractionPayload,
-  details?: Awaited<ReturnType<Provider['interactionDetails']>>,
+  details?: Interaction,
   userAgent?: string
 ) => {
   const userId = details?.result?.login?.accountId;
@@ -70,9 +59,9 @@ export const triggerInteractionHooksIfNeeded = async (
       )
     ),
   ]);
-  const payload: Omit<HookEventPayload, 'hookId'> = {
+  const payload = {
     event: hookEvent,
-    Event: event,
+    interactionEvent: event,
     createdAt: new Date().toISOString(),
     sessionId,
     userAgent,
@@ -82,7 +71,7 @@ export const triggerInteractionHooksIfNeeded = async (
     connectors: connector && [
       pick(connector.metadata, 'id', 'name', 'description', 'platform', 'target', 'isStandard'),
     ],
-  };
+  } satisfies Omit<HookEventPayload, 'hookId'>;
 
   await Promise.all(
     rows
diff --git a/packages/schemas/src/models/hooks.ts b/packages/schemas/src/models/hooks.ts
index 70f96fd32..595b8c8b9 100644
--- a/packages/schemas/src/models/hooks.ts
+++ b/packages/schemas/src/models/hooks.ts
@@ -2,12 +2,29 @@ import { generateStandardId } from '@logto/core-kit';
 import { createModel } from '@withtyped/server';
 import { z } from 'zod';
 
+import type { Application, Connector, User } from '../db-entries/index.js';
+import type { userInfoSelectFields } from '../types/index.js';
+
 export enum HookEvent {
   PostRegister = 'PostRegister',
   PostSignIn = 'PostSignIn',
   PostResetPassword = 'PostResetPassword',
 }
 
+export type HookEventPayload = {
+  hookId: string;
+  event: HookEvent;
+  createdAt: string;
+  sessionId?: string;
+  userAgent?: string;
+  userId?: string;
+  user?: Pick<User, typeof userInfoSelectFields[number]>;
+  application?: Pick<Application, 'id' | 'type' | 'name' | 'description'>;
+  connectors?: Array<
+    Pick<Connector, 'id'> & Pick<Connector['metadata'], 'name'> & Record<string, unknown>
+  >;
+} & Record<string, unknown>;
+
 export type HookConfig = {
   /** We don't need `type` since v1 only has web hook */
   // type: 'web';