diff --git a/packages/builtin-tool-user-interaction/package.json b/packages/builtin-tool-user-interaction/package.json
new file mode 100644
index 0000000000..99a6a8634a
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "@lobechat/builtin-tool-user-interaction",
+  "version": "1.0.0",
+  "private": true,
+  "exports": {
+    ".": "./src/index.ts",
+    "./client": "./src/client/index.ts",
+    "./executor": "./src/executor/index.ts",
+    "./executionRuntime": "./src/ExecutionRuntime/index.ts"
+  },
+  "main": "./src/index.ts",
+  "devDependencies": {
+    "@lobechat/types": "workspace:*"
+  }
+}
diff --git a/packages/builtin-tool-user-interaction/src/ExecutionRuntime/index.test.ts b/packages/builtin-tool-user-interaction/src/ExecutionRuntime/index.test.ts
new file mode 100644
index 0000000000..35ee125b15
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/ExecutionRuntime/index.test.ts
@@ -0,0 +1,109 @@
+import { describe, expect, it } from 'vitest';
+
+import { UserInteractionExecutionRuntime } from './index';
+
+describe('UserInteractionExecutionRuntime', () => {
+  it('creates a pending interaction request', async () => {
+    const runtime = new UserInteractionExecutionRuntime();
+    const result = await runtime.askUserQuestion({
+      question: { id: 'q1', mode: 'freeform', prompt: 'What is your name?' },
+    });
+
+    expect(result.success).toBe(true);
+    expect(result.state).toMatchObject({
+      requestId: 'q1',
+      status: 'pending',
+      question: { id: 'q1', mode: 'freeform', prompt: 'What is your name?' },
+    });
+  });
+
+  it('marks interaction as submitted with response', async () => {
+    const runtime = new UserInteractionExecutionRuntime();
+    await runtime.askUserQuestion({
+      question: { id: 'q2', mode: 'form', prompt: 'Fill this form' },
+    });
+
+    const result = await runtime.submitUserResponse({
+      requestId: 'q2',
+      response: { name: 'Alice' },
+    });
+
+    expect(result.success).toBe(true);
+    expect(result.state).toMatchObject({
+      requestId: 'q2',
+      status: 'submitted',
+      response: { name: 'Alice' },
+    });
+  });
+
+  it('marks interaction as skipped with reason', async () => {
+    const runtime = new UserInteractionExecutionRuntime();
+    await runtime.askUserQuestion({
+      question: { id: 'q3', mode: 'freeform', prompt: 'Optional question' },
+    });
+
+    const result = await runtime.skipUserResponse({
+      requestId: 'q3',
+      reason: 'Not relevant',
+    });
+
+    expect(result.success).toBe(true);
+    expect(result.state).toMatchObject({
+      requestId: 'q3',
+      status: 'skipped',
+      skipReason: 'Not relevant',
+    });
+  });
+
+  it('marks interaction as cancelled', async () => {
+    const runtime = new UserInteractionExecutionRuntime();
+    await runtime.askUserQuestion({
+      question: { id: 'q4', mode: 'freeform', prompt: 'Will be cancelled' },
+    });
+
+    const result = await runtime.cancelUserResponse({ requestId: 'q4' });
+
+    expect(result.success).toBe(true);
+    expect(result.state).toMatchObject({
+      requestId: 'q4',
+      status: 'cancelled',
+    });
+  });
+
+  it('gets current interaction state', async () => {
+    const runtime = new UserInteractionExecutionRuntime();
+    await runtime.askUserQuestion({
+      question: { id: 'q5', mode: 'freeform', prompt: 'Check state' },
+    });
+
+    const result = await runtime.getInteractionState({ requestId: 'q5' });
+
+    expect(result.success).toBe(true);
+    expect(result.state).toMatchObject({
+      requestId: 'q5',
+      status: 'pending',
+    });
+  });
+
+  it('returns error for non-existent interaction', async () => {
+    const runtime = new UserInteractionExecutionRuntime();
+    const result = await runtime.getInteractionState({ requestId: 'nonexistent' });
+
+    expect(result.success).toBe(false);
+  });
+
+  it('prevents submitting a non-pending interaction', async () => {
+    const runtime = new UserInteractionExecutionRuntime();
+    await runtime.askUserQuestion({
+      question: { id: 'q6', mode: 'freeform', prompt: 'Already done' },
+    });
+    await runtime.cancelUserResponse({ requestId: 'q6' });
+
+    const result = await runtime.submitUserResponse({
+      requestId: 'q6',
+      response: { late: true },
+    });
+
+    expect(result.success).toBe(false);
+  });
+});
diff --git a/packages/builtin-tool-user-interaction/src/ExecutionRuntime/index.ts b/packages/builtin-tool-user-interaction/src/ExecutionRuntime/index.ts
new file mode 100644
index 0000000000..a663071330
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/ExecutionRuntime/index.ts
@@ -0,0 +1,125 @@
+import type { BuiltinServerRuntimeOutput } from '@lobechat/types';
+
+import type {
+  AskUserQuestionArgs,
+  CancelUserResponseArgs,
+  GetInteractionStateArgs,
+  InteractionState,
+  SkipUserResponseArgs,
+  SubmitUserResponseArgs,
+} from '../types';
+
+export class UserInteractionExecutionRuntime {
+  private interactions: Map<string, InteractionState> = new Map();
+
+  async askUserQuestion(args: AskUserQuestionArgs): Promise<BuiltinServerRuntimeOutput> {
+    const { question } = args;
+    const requestId = question.id;
+
+    const state: InteractionState = {
+      question,
+      requestId,
+      status: 'pending',
+    };
+
+    this.interactions.set(requestId, state);
+
+    return {
+      content: `Question "${question.prompt}" is now pending user response.`,
+      state,
+      success: true,
+    };
+  }
+
+  async submitUserResponse(args: SubmitUserResponseArgs): Promise<BuiltinServerRuntimeOutput> {
+    const { requestId, response } = args;
+    const state = this.interactions.get(requestId);
+
+    if (!state) {
+      return { content: `Interaction not found: ${requestId}`, success: false };
+    }
+
+    if (state.status !== 'pending') {
+      return {
+        content: `Interaction ${requestId} is already ${state.status}, cannot submit.`,
+        success: false,
+      };
+    }
+
+    state.status = 'submitted';
+    state.response = response;
+    this.interactions.set(requestId, state);
+
+    return {
+      content: `User response submitted for interaction ${requestId}.`,
+      state,
+      success: true,
+    };
+  }
+
+  async skipUserResponse(args: SkipUserResponseArgs): Promise<BuiltinServerRuntimeOutput> {
+    const { requestId, reason } = args;
+    const state = this.interactions.get(requestId);
+
+    if (!state) {
+      return { content: `Interaction not found: ${requestId}`, success: false };
+    }
+
+    if (state.status !== 'pending') {
+      return {
+        content: `Interaction ${requestId} is already ${state.status}, cannot skip.`,
+        success: false,
+      };
+    }
+
+    state.status = 'skipped';
+    state.skipReason = reason;
+    this.interactions.set(requestId, state);
+
+    return {
+      content: `Interaction ${requestId} skipped.${reason ? ` Reason: ${reason}` : ''}`,
+      state,
+      success: true,
+    };
+  }
+
+  async cancelUserResponse(args: CancelUserResponseArgs): Promise<BuiltinServerRuntimeOutput> {
+    const { requestId } = args;
+    const state = this.interactions.get(requestId);
+
+    if (!state) {
+      return { content: `Interaction not found: ${requestId}`, success: false };
+    }
+
+    if (state.status !== 'pending') {
+      return {
+        content: `Interaction ${requestId} is already ${state.status}, cannot cancel.`,
+        success: false,
+      };
+    }
+
+    state.status = 'cancelled';
+    this.interactions.set(requestId, state);
+
+    return {
+      content: `Interaction ${requestId} cancelled.`,
+      state,
+      success: true,
+    };
+  }
+
+  async getInteractionState(args: GetInteractionStateArgs): Promise<BuiltinServerRuntimeOutput> {
+    const { requestId } = args;
+    const state = this.interactions.get(requestId);
+
+    if (!state) {
+      return { content: `Interaction not found: ${requestId}`, success: false };
+    }
+
+    return {
+      content: `Interaction ${requestId} is ${state.status}.`,
+      state,
+      success: true,
+    };
+  }
+}
diff --git a/packages/builtin-tool-user-interaction/src/client/Intervention/AskUserQuestion/index.tsx b/packages/builtin-tool-user-interaction/src/client/Intervention/AskUserQuestion/index.tsx
new file mode 100644
index 0000000000..163199665b
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/client/Intervention/AskUserQuestion/index.tsx
@@ -0,0 +1,37 @@
+'use client';
+
+import type { BuiltinInterventionProps } from '@lobechat/types';
+import { memo } from 'react';
+
+import type { AskUserQuestionArgs } from '../../../types';
+
+const AskUserQuestionIntervention = memo<BuiltinInterventionProps<AskUserQuestionArgs>>(
+  ({ args }) => {
+    const { question } = args;
+
+    return (
+      <div>
+        <p>{question.prompt}</p>
+        {question.description && (
+          <p style={{ color: 'var(--lobe-text-secondary)', fontSize: 13 }}>
+            {question.description}
+          </p>
+        )}
+        {question.fields && question.fields.length > 0 && (
+          <ul style={{ margin: 0, paddingLeft: 20 }}>
+            {question.fields.map((field) => (
+              <li key={field.key}>
+                {field.label}
+                {field.required && ' *'}
+              </li>
+            ))}
+          </ul>
+        )}
+      </div>
+    );
+  },
+);
+
+AskUserQuestionIntervention.displayName = 'AskUserQuestionIntervention';
+
+export default AskUserQuestionIntervention;
diff --git a/packages/builtin-tool-user-interaction/src/client/Intervention/index.ts b/packages/builtin-tool-user-interaction/src/client/Intervention/index.ts
new file mode 100644
index 0000000000..2ee129a2ac
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/client/Intervention/index.ts
@@ -0,0 +1,8 @@
+import type { BuiltinIntervention } from '@lobechat/types';
+
+import { UserInteractionApiName } from '../../types';
+import AskUserQuestionIntervention from './AskUserQuestion';
+
+export const UserInteractionInterventions: Record<string, BuiltinIntervention> = {
+  [UserInteractionApiName.askUserQuestion]: AskUserQuestionIntervention as BuiltinIntervention,
+};
diff --git a/packages/builtin-tool-user-interaction/src/client/index.ts b/packages/builtin-tool-user-interaction/src/client/index.ts
new file mode 100644
index 0000000000..79dc312caf
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/client/index.ts
@@ -0,0 +1,3 @@
+export { UserInteractionManifest } from '../manifest';
+export * from '../types';
+export { UserInteractionInterventions } from './Intervention';
diff --git a/packages/builtin-tool-user-interaction/src/executor/index.ts b/packages/builtin-tool-user-interaction/src/executor/index.ts
new file mode 100644
index 0000000000..89178430dc
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/executor/index.ts
@@ -0,0 +1,63 @@
+import { BaseExecutor, type BuiltinToolContext, type BuiltinToolResult } from '@lobechat/types';
+
+import { UserInteractionExecutionRuntime } from '../ExecutionRuntime';
+import {
+  type AskUserQuestionArgs,
+  type CancelUserResponseArgs,
+  type GetInteractionStateArgs,
+  type SkipUserResponseArgs,
+  type SubmitUserResponseArgs,
+  UserInteractionApiName,
+  UserInteractionIdentifier,
+} from '../types';
+
+export class UserInteractionExecutor extends BaseExecutor<typeof UserInteractionApiName> {
+  readonly identifier = UserInteractionIdentifier;
+  protected readonly apiEnum = UserInteractionApiName;
+
+  private runtime: UserInteractionExecutionRuntime;
+
+  constructor(runtime: UserInteractionExecutionRuntime) {
+    super();
+    this.runtime = runtime;
+  }
+
+  askUserQuestion = async (
+    params: AskUserQuestionArgs,
+    _ctx: BuiltinToolContext,
+  ): Promise<BuiltinToolResult> => {
+    return this.runtime.askUserQuestion(params);
+  };
+
+  submitUserResponse = async (
+    params: SubmitUserResponseArgs,
+    _ctx: BuiltinToolContext,
+  ): Promise<BuiltinToolResult> => {
+    return this.runtime.submitUserResponse(params);
+  };
+
+  skipUserResponse = async (
+    params: SkipUserResponseArgs,
+    _ctx: BuiltinToolContext,
+  ): Promise<BuiltinToolResult> => {
+    return this.runtime.skipUserResponse(params);
+  };
+
+  cancelUserResponse = async (
+    params: CancelUserResponseArgs,
+    _ctx: BuiltinToolContext,
+  ): Promise<BuiltinToolResult> => {
+    return this.runtime.cancelUserResponse(params);
+  };
+
+  getInteractionState = async (
+    params: GetInteractionStateArgs,
+    _ctx: BuiltinToolContext,
+  ): Promise<BuiltinToolResult> => {
+    return this.runtime.getInteractionState(params);
+  };
+}
+
+const fallbackRuntime = new UserInteractionExecutionRuntime();
+
+export const userInteractionExecutor = new UserInteractionExecutor(fallbackRuntime);
diff --git a/packages/builtin-tool-user-interaction/src/index.ts b/packages/builtin-tool-user-interaction/src/index.ts
new file mode 100644
index 0000000000..807b12a89f
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/index.ts
@@ -0,0 +1,18 @@
+export * from './ExecutionRuntime';
+export { UserInteractionManifest } from './manifest';
+export { systemPrompt } from './systemRole';
+export {
+  type AskUserQuestionArgs,
+  type CancelUserResponseArgs,
+  type GetInteractionStateArgs,
+  type InteractionField,
+  type InteractionFieldOption,
+  type InteractionMode,
+  type InteractionState,
+  type InteractionStatus,
+  type SkipUserResponseArgs,
+  type SubmitUserResponseArgs,
+  UserInteractionApiName,
+  UserInteractionIdentifier,
+  type UserInteractionResult,
+} from './types';
diff --git a/packages/builtin-tool-user-interaction/src/manifest.ts b/packages/builtin-tool-user-interaction/src/manifest.ts
new file mode 100644
index 0000000000..a09a297195
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/manifest.ts
@@ -0,0 +1,143 @@
+import type { BuiltinToolManifest } from '@lobechat/types';
+
+import { systemPrompt } from './systemRole';
+import { UserInteractionApiName, UserInteractionIdentifier } from './types';
+
+export const UserInteractionManifest: BuiltinToolManifest = {
+  api: [
+    {
+      description:
+        'Present a question to the user with either structured form fields or freeform input. Returns the interaction request in pending state.',
+      name: UserInteractionApiName.askUserQuestion,
+      parameters: {
+        properties: {
+          question: {
+            properties: {
+              description: { type: 'string' },
+              fields: {
+                items: {
+                  properties: {
+                    key: { type: 'string' },
+                    kind: {
+                      enum: ['multiselect', 'select', 'text', 'textarea'],
+                      type: 'string',
+                    },
+                    label: { type: 'string' },
+                    options: {
+                      items: {
+                        properties: {
+                          label: { type: 'string' },
+                          value: { type: 'string' },
+                        },
+                        required: ['label', 'value'],
+                        type: 'object',
+                      },
+                      type: 'array',
+                    },
+                    placeholder: { type: 'string' },
+                    required: { type: 'boolean' },
+                    value: {
+                      oneOf: [{ type: 'string' }, { items: { type: 'string' }, type: 'array' }],
+                    },
+                  },
+                  required: ['key', 'kind', 'label'],
+                  type: 'object',
+                },
+                type: 'array',
+              },
+              id: { type: 'string' },
+              metadata: {
+                additionalProperties: true,
+                type: 'object',
+              },
+              mode: {
+                enum: ['form', 'freeform'],
+                type: 'string',
+              },
+              prompt: { type: 'string' },
+            },
+            required: ['id', 'mode', 'prompt'],
+            type: 'object',
+          },
+        },
+        required: ['question'],
+        type: 'object',
+      },
+    },
+    {
+      description: "Record the user's submitted response for a pending interaction request.",
+      name: UserInteractionApiName.submitUserResponse,
+      parameters: {
+        properties: {
+          requestId: {
+            description: 'The interaction request ID to submit a response for.',
+            type: 'string',
+          },
+          response: {
+            additionalProperties: true,
+            description: "The user's response data.",
+            type: 'object',
+          },
+        },
+        required: ['requestId', 'response'],
+        type: 'object',
+      },
+    },
+    {
+      description: 'Mark a pending interaction request as skipped with an optional reason.',
+      name: UserInteractionApiName.skipUserResponse,
+      parameters: {
+        properties: {
+          reason: {
+            description: 'Optional reason for skipping.',
+            type: 'string',
+          },
+          requestId: {
+            description: 'The interaction request ID to skip.',
+            type: 'string',
+          },
+        },
+        required: ['requestId'],
+        type: 'object',
+      },
+    },
+    {
+      description: 'Cancel a pending interaction request.',
+      name: UserInteractionApiName.cancelUserResponse,
+      parameters: {
+        properties: {
+          requestId: {
+            description: 'The interaction request ID to cancel.',
+            type: 'string',
+          },
+        },
+        required: ['requestId'],
+        type: 'object',
+      },
+    },
+    {
+      description: 'Get the current state of an interaction request.',
+      name: UserInteractionApiName.getInteractionState,
+      parameters: {
+        properties: {
+          requestId: {
+            description: 'The interaction request ID to query.',
+            type: 'string',
+          },
+        },
+        required: ['requestId'],
+        type: 'object',
+      },
+      renderDisplayControl: 'collapsed',
+    },
+  ],
+  identifier: UserInteractionIdentifier,
+  meta: {
+    avatar: '💬',
+    description:
+      'Ask users questions and collect structured responses with submit/skip/cancel semantics',
+    title: 'User Interaction',
+  },
+  systemRole: systemPrompt,
+  type: 'builtin',
+};
diff --git a/packages/builtin-tool-user-interaction/src/systemRole.ts b/packages/builtin-tool-user-interaction/src/systemRole.ts
new file mode 100644
index 0000000000..4fe2ecf4d4
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/systemRole.ts
@@ -0,0 +1,29 @@
+export const systemPrompt = `You have access to a User Interaction tool for asking users questions and collecting structured responses.
+
+<core_capabilities>
+1. Ask question (askUserQuestion) - present a question with form fields or freeform input
+2. Submit response (submitUserResponse) - record the user's submitted answer
+3. Skip response (skipUserResponse) - mark a question as skipped with optional reason
+4. Cancel response (cancelUserResponse) - cancel a pending question
+5. Get state (getInteractionState) - check the current state of an interaction request
+</core_capabilities>
+
+<lifecycle>
+1. Call askUserQuestion with a question object (id, mode, prompt, optional fields).
+2. The UI surfaces the question to the user. The interaction enters "pending" state.
+3. The user responds in one of three ways:
+   - Submit: submitUserResponse is called with the user's answer → status becomes "submitted"
+   - Skip: skipUserResponse is called → status becomes "skipped"
+   - Cancel: cancelUserResponse is called → status becomes "cancelled"
+4. Use getInteractionState to check the outcome if needed.
+5. Process the result and continue the conversation accordingly.
+</lifecycle>
+
+<best_practices>
+- Use "form" mode when you need structured data with specific fields.
+- Use "freeform" mode for open-ended questions where the user types a free response.
+- Always provide a clear, concise prompt so the user knows what is being asked.
+- Handle all three outcomes (submit/skip/cancel) gracefully.
+- Do not ask multiple questions simultaneously; wait for one to resolve before asking another.
+</best_practices>
+`;
diff --git a/packages/builtin-tool-user-interaction/src/types.ts b/packages/builtin-tool-user-interaction/src/types.ts
new file mode 100644
index 0000000000..49e8d6594e
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/src/types.ts
@@ -0,0 +1,70 @@
+export const UserInteractionIdentifier = 'lobe-user-interaction';
+
+export const UserInteractionApiName = {
+  askUserQuestion: 'askUserQuestion',
+  cancelUserResponse: 'cancelUserResponse',
+  getInteractionState: 'getInteractionState',
+  skipUserResponse: 'skipUserResponse',
+  submitUserResponse: 'submitUserResponse',
+} as const;
+
+export type InteractionMode = 'form' | 'freeform';
+
+export type InteractionStatus = 'cancelled' | 'pending' | 'skipped' | 'submitted';
+
+export interface InteractionFieldOption {
+  label: string;
+  value: string;
+}
+
+export interface InteractionField {
+  key: string;
+  kind: 'multiselect' | 'select' | 'text' | 'textarea';
+  label: string;
+  options?: InteractionFieldOption[];
+  placeholder?: string;
+  required?: boolean;
+  value?: string | string[];
+}
+
+export interface AskUserQuestionArgs {
+  question: {
+    description?: string;
+    fields?: InteractionField[];
+    id: string;
+    metadata?: Record<string, unknown>;
+    mode: InteractionMode;
+    prompt: string;
+  };
+}
+
+export interface SubmitUserResponseArgs {
+  requestId: string;
+  response: Record<string, unknown>;
+}
+
+export interface SkipUserResponseArgs {
+  reason?: string;
+  requestId: string;
+}
+
+export interface CancelUserResponseArgs {
+  requestId: string;
+}
+
+export interface GetInteractionStateArgs {
+  requestId: string;
+}
+
+export interface InteractionState {
+  question?: AskUserQuestionArgs['question'];
+  requestId: string;
+  response?: Record<string, unknown>;
+  skipReason?: string;
+  status: InteractionStatus;
+}
+
+export type UserInteractionResult =
+  | { requestId: string; response: Record<string, unknown>; type: 'submitted' }
+  | { reason?: string; requestId: string; type: 'skipped' }
+  | { requestId: string; type: 'cancelled' };
diff --git a/packages/builtin-tool-user-interaction/tsconfig.json b/packages/builtin-tool-user-interaction/tsconfig.json
new file mode 100644
index 0000000000..596e2cf729
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/tsconfig.json
@@ -0,0 +1,4 @@
+{
+  "extends": "../../tsconfig.json",
+  "include": ["src"]
+}
diff --git a/packages/builtin-tool-user-interaction/vitest.config.mts b/packages/builtin-tool-user-interaction/vitest.config.mts
new file mode 100644
index 0000000000..4ac6027d57
--- /dev/null
+++ b/packages/builtin-tool-user-interaction/vitest.config.mts
@@ -0,0 +1,7 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    environment: 'node',
+  },
+});