qzl
451 lines
9.5 KiB
Markdown
451 lines
9.5 KiB
Markdown
# Agent Run Input Protocol
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> **NOTE**: This document defines the RunAgentInput data structure for `POST /api/v1/agent/runs`.
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## Version
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- **Current**: `1.0`
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- **Status**: Active
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---
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## Overview
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`POST /api/v1/agent/runs` accepts `RunAgentInput` as request body to initiate an agent execution.
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---
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## RunAgentInput Schema
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```typescript
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interface RunAgentInput {
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threadId: string; // 必须是有效 UUID
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runId: string; // 最大 128 字符
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parentRunId?: string;
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state?: any;
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messages: Message[]; // 最多 200 条
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tools?: Tool[];
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context?: Context[];
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forwardedProps?: any;
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}
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```
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### Required Fields
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| Field | Type | Constraints |
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|-------|------|-------------|
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| `threadId` | string | 必须为有效 UUID |
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| `runId` | string | 最大 128 字符 |
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| `messages` | array | 最多 200 条，**必须恰好包含 1 条 user message** |
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| `state` | any | - |
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| `tools` | array | 可选 |
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| `context` | array | 可选 |
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| `forwardedProps` | any | - |
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---
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## Message Types
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### UserMessage
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```typescript
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interface UserMessage {
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id: string;
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role: "user";
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content: string | ContentBlock[];
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name?: string;
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encryptedValue?: string;
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}
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type ContentBlock = TextContentBlock | BinaryContentBlock;
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interface TextContentBlock {
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type: "text";
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text: string;
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}
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interface BinaryContentBlock {
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type: "binary";
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mimeType: string; // 必须为 image/* 类型
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id?: string;
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url?: string; // 必须是有效的 signed URL
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data?: string; // 不允许使用 data 字段
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filename?: string;
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}
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```
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### AssistantMessage
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```typescript
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interface AssistantMessage {
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id: string;
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role: "assistant";
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content?: string | null;
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name?: string | null;
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toolCalls?: ToolCall[];
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encryptedValue?: string | null;
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}
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interface ToolCall {
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id: string;
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type: "function";
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function: {
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name: string;
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arguments: string;
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};
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encryptedValue?: string | null;
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}
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```
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### SystemMessage
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```typescript
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interface SystemMessage {
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id: string;
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role: "system";
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content: string;
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name?: string | null;
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encryptedValue?: string | null;
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}
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```
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### ToolMessage
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```typescript
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interface ToolMessage {
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id: string;
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role: "tool";
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content: string;
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toolCallId: string;
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error?: string | null;
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encryptedValue?: string | null;
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}
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```
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### Other Message Types
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- **DeveloperMessage**: `role: "developer"`
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- **ReasoningMessage**: `role: "reasoning"`
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- **ActivityMessage**: `role: "activity"` (for progress updates)
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---
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## Tool Schema
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```typescript
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interface Tool {
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name: string;
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description: string;
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parameters: object; // JSON Schema 格式
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}
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```
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### Example
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```json
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{
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"name": "get_weather",
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"description": "Get current weather for a location",
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"parameters": {
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"type": "object",
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"properties": {
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"location": {
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"type": "string",
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"description": "City name"
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},
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"unit": {
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"type": "string",
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"enum": ["celsius", "fahrenheit"]
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}
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},
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"required": ["location"]
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}
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}
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```
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### Backend Processing
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Backend 使用 `build_tools_prompt` 函数将 tools 转换为 prompt 格式：
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```
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<!-- TOOLS_START -->
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- get_weather: Get current weather for a location
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- args_schema: {"type":"object","properties":{"location":{"type":"string","description":"City name"},"unit":{"type":"string","enum":["celsius","fahrenheit"]}},"required":["location"]}
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- searchDocuments: Search for documents
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- args_schema: {"type":"object","properties":{"query":{"type":"string"}},"required":["query"]}
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Note: tool arguments must strictly match args_schema.
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<!-- TOOLS_END -->
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```
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---
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## Context Schema
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```typescript
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interface Context {
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description: string;
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value: string;
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}
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```
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---
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## Validation Rules
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Backend 实现了以下验证规则：
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| Rule | Error Message |
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|------|---------------|
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| payload ≤ 256KB | `RunAgentInput payload exceeds size limit` |
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| threadId 必须是 UUID | `threadId must be a valid UUID` |
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| runId 最大 128 字符 | `runId exceeds length limit` |
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| messages ≤ 200 条 | `RunAgentInput.messages exceeds limit` |
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| user text ≤ 10,000 字符 | `RunAgentInput user message text exceeds limit` |
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| **恰好 1 条 user message** | `RunAgentInput.messages must contain exactly one user message` |
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| user message 必须在第一条 | `RunAgentInput.messages[0].role must be user` |
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| binary 必须是 image/* | `binary content requires image mimeType` |
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| binary 必须有 url | `binary content requires url` |
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| binary 不允许使用 data | `binary content data is not allowed` |
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---
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## Request Example
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### 纯文本请求
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```json
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{
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"threadId": "550e8400-e29b-41d4-a716-446655440000",
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"runId": "run-001",
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"state": {},
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"messages": [
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{
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"id": "msg-001",
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"role": "user",
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"content": "帮我查一下北京今天的天气"
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}
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],
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"tools": [],
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"context": [],
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"forwardedProps": {}
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}
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```
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### 多模态请求 (带图片)
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```json
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{
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"threadId": "550e8400-e29b-41d4-a716-446655440000",
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"runId": "run-002",
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"state": {},
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"messages": [
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{
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"id": "msg-001",
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"role": "user",
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"content": [
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{
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"type": "text",
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"text": "这张图片里的内容是什么?"
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},
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{
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"type": "binary",
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"mimeType": "image/png",
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"url": "https://storage.example.com/agent-inputs/user-123/image.png?signature=xxx"
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}
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]
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}
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],
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"tools": [],
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"context": [],
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"forwardedProps": {}
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}
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```
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### 带 Tools 的请求
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```json
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{
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"threadId": "550e8400-e29b-41d4-a716-446655440000",
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"runId": "run-003",
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"state": {},
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"messages": [
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{
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"id": "msg-001",
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"role": "user",
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"content": "北京天气怎么样?"
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}
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],
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"tools": [
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{
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"name": "get_weather",
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"description": "获取指定城市的天气信息",
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"parameters": {
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"type": "object",
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"properties": {
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"city": {
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"type": "string",
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"description": "城市名称"
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}
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},
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"required": ["city"]
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}
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}
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],
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"context": [],
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"forwardedProps": {}
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}
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```
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---
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## Response
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成功响应返回 `TaskAcceptedResponse`：
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```typescript
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interface TaskAcceptedResponse {
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taskId: string;
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threadId: string;
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runId: string;
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created: boolean; // 是否新建会话
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}
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```
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---
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## History API
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`GET /api/v1/agent/history` 返回对话历史快照。
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### Request
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| Parameter | Type | Description |
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|-----------|------|-------------|
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| `threadId` | string (query) | 可选，指定会话 ID，不指定则返回最新会话 |
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| `before` | string (query) | 可选，日期格式 `YYYY-MM-DD`，返回该日期之前的快照 |
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### Response
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返回 `HistorySnapshotResponse`：
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```typescript
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interface HistorySnapshotResponse {
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scope: "history_day";
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threadId: string | null;
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day: string | null; // ISO date format "YYYY-MM-DD"
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hasMore: boolean;
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messages: HistoryMessage[];
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}
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```
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### HistoryMessage
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根据消息 role 不同，返回字段有所差异：
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```typescript
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// role = "user"
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interface HistoryMessageUser {
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id: string;
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seq: number;
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role: "user";
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content: string;
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url: string | null; // 附件临时访问 URL
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timestamp: string; // ISO-8601 timestamp
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}
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// role = "tool"
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interface HistoryMessageTool {
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id: string;
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seq: number;
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role: "tool";
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content: string;
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ui_schema: UiSchemaRenderer | null; // 由 tool_agent_output.ui_hints 编译
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timestamp: string;
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}
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// role = "assistant"
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interface HistoryMessageAssistant {
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id: string;
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seq: number;
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role: "assistant";
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content: string;
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ui_schema: UiSchemaRenderer | null; // 由 worker_agent_output.ui_hints 编译
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timestamp: string;
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}
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type HistoryMessage = HistoryMessageUser | HistoryMessageTool | HistoryMessageAssistant;
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```
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### UiSchemaRenderer
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编译后的 UI 渲染结构，详见 [UiSchema Protocol](../ui/ui-schema.md)：
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```typescript
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interface UiSchemaRenderer {
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version: "2.0";
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locale: string;
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status: "info" | "success" | "warning" | "error" | "pending";
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theme: "default" | "light" | "dark";
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meta?: {
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requestId?: string;
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toolId?: string;
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traceId?: string;
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userId?: string;
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};
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root: UiLayoutNode;
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}
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```
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### Example
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```json
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{
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"scope": "history_day",
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"threadId": "550e8400-e29b-41d4-a716-446655440000",
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"day": "2026-03-15",
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"hasMore": true,
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"messages": [
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{
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"id": "msg-001",
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"seq": 1,
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"role": "user",
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"content": "帮我创建一个日程",
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"url": null,
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"timestamp": "2026-03-15T10:00:00Z"
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},
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{
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"id": "msg-002",
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"seq": 2,
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"role": "assistant",
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"content": "好的，我来帮您创建日程。",
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"ui_schema": {
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"version": "2.0",
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"locale": "zh-CN",
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"status": "success",
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"theme": "default",
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"root": {
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"type": "stack",
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"appearance": "card",
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"children": [
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{"type": "text", "content": "日程已创建", "role": "title"},
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{"type": "badge", "label": "SUCCESS", "status": "success"},
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{"type": "text", "content": "您的会议日程创建成功", "role": "body"}
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]
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}
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},
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"timestamp": "2026-03-15T10:00:05Z"
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}
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]
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}
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```
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---
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## Compatibility Notes
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- `UserMessage.content` 支持 string 或 array 格式，前端优先使用 array 格式以支持多模态
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- binary content 的 url 必须是有效的 signed URL，由 `/api/v1/agent/attachments` 端点生成
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- backend 验证通过后，会将 binary url 转换为内部存储路径
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- tools 为空数组时，prompt 中不会包含工具说明
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- `RunAgentInput` 同时接受 camelCase 与 snake_case 别名输入（推荐统一使用 camelCase）
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