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social-app/docs/protocols/agent/run-agent-input.md
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qzl 641d847008 docs: update agent and UI protocol documentation
- Update api-endpoints.md with new agent endpoints
- Update run-agent-input.md with new input schemas
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Agent Run Input Protocol

Note

: This document defines the RunAgentInput data structure for POST /api/v1/agent/runs.

Version

  • Current: 1.0
  • Status: Active

Overview

POST /api/v1/agent/runs accepts RunAgentInput as request body to initiate an agent execution.


RunAgentInput Schema

interface RunAgentInput {
  threadId: string;      // 必须是有效 UUID
  runId: string;         // 最大 128 字符
  parentRunId?: string;
  state?: any;
  messages: Message[];   // 最多 200 条
  tools?: Tool[];
  context?: Context[];
  forwardedProps?: any;
}

Required Fields

Field Type Constraints
threadId string 必须为有效 UUID
runId string 最大 128 字符
messages array 最多 200 条,必须恰好包含 1 条 user message
state any -
tools array 可选
context array 可选
forwardedProps any -

Message Types

UserMessage

interface UserMessage {
  id: string;
  role: "user";
  content: string | ContentBlock[];
  name?: string;
  encryptedValue?: string;
}

type ContentBlock = TextContentBlock | BinaryContentBlock;

interface TextContentBlock {
  type: "text";
  text: string;
}

interface BinaryContentBlock {
  type: "binary";
  mimeType: string;      // 必须为 image/* 类型
  id?: string;
  url?: string;          // 必须是有效的 signed URL
  data?: string;         // 不允许使用 data 字段
  filename?: string;
}

AssistantMessage

interface AssistantMessage {
  id: string;
  role: "assistant";
  content?: string | null;
  name?: string | null;
  toolCalls?: ToolCall[];
  encryptedValue?: string | null;
}

interface ToolCall {
  id: string;
  type: "function";
  function: {
    name: string;
    arguments: string;
  };
  encryptedValue?: string | null;
}

SystemMessage

interface SystemMessage {
  id: string;
  role: "system";
  content: string;
  name?: string | null;
  encryptedValue?: string | null;
}

ToolMessage

interface ToolMessage {
  id: string;
  role: "tool";
  content: string;
  toolCallId: string;
  error?: string | null;
  encryptedValue?: string | null;
}

Other Message Types

  • DeveloperMessage: role: "developer"
  • ReasoningMessage: role: "reasoning"
  • ActivityMessage: role: "activity" (for progress updates)

Tool Schema

interface Tool {
  name: string;
  description: string;
  parameters: object;   // JSON Schema 格式
}

Example

{
  "name": "get_weather",
  "description": "Get current weather for a location",
  "parameters": {
    "type": "object",
    "properties": {
      "location": {
        "type": "string",
        "description": "City name"
      },
      "unit": {
        "type": "string",
        "enum": ["celsius", "fahrenheit"]
      }
    },
    "required": ["location"]
  }
}

Frontend Tool Channel Semantics

  • RunAgentInput.tools 用于前端工具通道(供前端/HITL 审批链路透传与回放)。
  • 当前后端 AgentScope 执行阶段使用该字段来注册或筛选后端工具。
  • 后端可调用工具以 toolkit.register_tool_function(...) 注册结果为准(例如 calendar_write)。
  • 因此 tools 可为空数组,不影响后端已注册工具的调用能力。

注意:请勿把后端已注册工具重复写入 RunAgentInput.tools,避免命名/参数描述冲突。


Context Schema

interface Context {
  description: string;
  value: string;
}

forwardedProps Schema(支持 agent_type + client_time

RunAgentInput.forwardedProps 支持透传运行模式与客户端时间上下文。日历相关能力必须使用以下结构:

interface ForwardedProps {
  agent_type: string;               // 必填,运行模式(如 "worker" / "memory"
  client_time?: {
    device_timezone: string;           // IANA 时区,例如 "America/Los_Angeles"
    client_now_iso: string;            // RFC3339 带偏移时间,例如 "2026-03-16T09:12:33-07:00"
    client_epoch_ms: number;           // Unix epoch 毫秒
  };
}

时间来源优先级(固定)

后端在运行时按以下顺序解析事件时区:

  1. event_timezone(工具调用显式传参)
  2. forwardedProps.client_time.device_timezone
  3. users.profile.settings.timezone
  4. UTC

约束

  • device_timezone 必须是有效 IANA 时区。
  • client_now_iso 必须是 RFC3339 且包含时区偏移。
  • client_epoch_ms 必须是整数毫秒时间戳。
  • forwardedProps.agent_type 必填,且必须匹配后端已注册的 agent type。
  • agent_type=memory 为自动化任务内部模式,HTTP /agent/runs 入口不接受该值。
  • forwardedProps 仅允许 agent_typeclient_time,额外字段会触发 422 invalid RunAgentInput.forwardedProps
  • 业务代码不得使用服务器本地时区作为事件语义时区。

说明

  • forwardedProps 是透传字段,不改变 AG-UI 主体协议结构。
  • forwardedProps.client_time 缺失或非法时,运行时回退到 users.profile.settings.timezone
  • 日历写入必须在最终工具调用中带上 event_timezone,不得依赖工具默认值。

Validation Rules

Backend 实现了以下验证规则:

Rule Error Message
payload ≤ 256KB RunAgentInput payload exceeds size limit
threadId 必须是 UUID threadId must be a valid UUID
runId 最大 128 字符 runId exceeds length limit
messages ≤ 200 条 RunAgentInput.messages exceeds limit
user text ≤ 10,000 字符 RunAgentInput user message text exceeds limit
forwardedProps.agent_type 必填 invalid RunAgentInput.forwardedProps
恰好 1 条 user message RunAgentInput.messages must contain exactly one user message
user message 必须在第一条 RunAgentInput.messages[0].role must be user
binary 必须是 image/* binary content requires image mimeType
binary 必须有 url binary content requires url
binary 不允许使用 data binary content data is not allowed
单条消息最多 3 张附件 Too many attachments

forwardedProps.client_time Validation

建议在后端校验层返回以下错误(按业务实现映射到 4xx):

Rule Error Message
device_timezone 非 IANA 时区 invalid client_time.device_timezone
client_now_iso 无法解析或缺少时区 invalid client_time.client_now_iso
client_epoch_ms 非整数毫秒值 invalid client_time.client_epoch_ms

Request Example

纯文本请求

{
  "threadId": "550e8400-e29b-41d4-a716-446655440000",
  "runId": "run-001",
  "state": {},
  "messages": [
    {
      "id": "msg-001",
      "role": "user",
      "content": "帮我查一下北京今天的天气"
    }
  ],
  "tools": [],
  "context": [],
  "forwardedProps": {
    "agent_type": "worker"
  }
}

多模态请求 (带图片)

{
  "threadId": "550e8400-e29b-41d4-a716-446655440000",
  "runId": "run-002",
  "state": {},
  "messages": [
    {
      "id": "msg-001",
      "role": "user",
      "content": [
        {
          "type": "text",
          "text": "这张图片里的内容是什么?"
        },
        {
          "type": "binary",
          "mimeType": "image/png",
          "url": "https://storage.example.com/agent-inputs/user-123/image.png?signature=xxx"
        }
      ]
    }
  ],
  "tools": [],
  "context": [],
  "forwardedProps": {
    "agent_type": "worker"
  }
}

带 Tools 的请求

{
  "threadId": "550e8400-e29b-41d4-a716-446655440000",
  "runId": "run-003",
  "state": {},
  "messages": [
    {
      "id": "msg-001",
      "role": "user",
      "content": "北京天气怎么样?"
    }
  ],
  "tools": [
    {
      "name": "get_weather",
      "description": "获取指定城市的天气信息",
      "parameters": {
        "type": "object",
        "properties": {
          "city": {
            "type": "string",
            "description": "城市名称"
          }
        },
        "required": ["city"]
      }
    }
  ],
  "context": [],
  "forwardedProps": {
    "agent_type": "worker"
  }
}

带 forwardedProps.client_time 的请求

{
  "threadId": "550e8400-e29b-41d4-a716-446655440000",
  "runId": "run-004",
  "state": {},
  "messages": [
    {
      "id": "msg-001",
      "role": "user",
      "content": "帮我明天早上9点创建一个日历"
    }
  ],
  "tools": [],
  "context": [],
  "forwardedProps": {
    "agent_type": "worker",
    "client_time": {
      "device_timezone": "America/Los_Angeles",
      "client_now_iso": "2026-03-16T09:12:33-07:00",
      "client_epoch_ms": 1773658353000
    }
  }
}

Response

成功响应返回 TaskAcceptedResponse

interface TaskAcceptedResponse {
  taskId: string;
  threadId: string;
  runId: string;
  created: boolean; // 是否新建会话
}

History API

GET /api/v1/agent/history 返回对话历史快照。

Request

Parameter Type Description
threadId string (query) 可选,指定会话 ID,不指定则返回最新会话
before string (query) 可选,日期格式 YYYY-MM-DD,返回该日期之前的快照

Response

返回 HistorySnapshotResponse

interface HistorySnapshotResponse {
  scope: "history_day";
  threadId: string | null;
  day: string | null;       // ISO date format "YYYY-MM-DD"
  hasMore: boolean;
  messages: HistoryMessage[];
}

HistoryMessage

根据消息 role 不同,返回字段有所差异:

// role = "user"
interface HistoryMessageUser {
  id: string;
  seq: number;
  role: "user";
  content: string;
  attachments: HistoryAttachment[];
  timestamp: string;        // ISO-8601 timestamp
}

interface HistoryAttachment {
  mimeType: string;
  url: string;
}

// role = "assistant"
interface HistoryMessageAssistant {
  id: string;
  seq: number;
  role: "assistant";
  content: string;
  ui_schema: UiSchemaRenderer | null; // 由 agent_output.ui_hints 编译
  timestamp: string;
}

type HistoryMessage = HistoryMessageUser | HistoryMessageAssistant;

UiSchemaRenderer

编译后的 UI 渲染结构,详见 UiSchema Protocol

interface UiSchemaRenderer {
  version: "2.0";
  locale: string;
  status: "info" | "success" | "warning" | "error" | "pending";
  theme: "default" | "light" | "dark";
  meta?: {
    requestId?: string;
    toolId?: string;
    traceId?: string;
    userId?: string;
  };
  root: UiLayoutNode;
}

Example

{
  "scope": "history_day",
  "threadId": "550e8400-e29b-41d4-a716-446655440000",
  "day": "2026-03-15",
  "hasMore": true,
  "messages": [
    {
      "id": "msg-001",
      "seq": 1,
      "role": "user",
      "content": "帮我创建一个日程",
      "attachments": [
        {
          "mimeType": "image/png",
          "url": "https://project.supabase.co/storage/v1/object/sign/agent-inputs/..."
        }
      ],
      "timestamp": "2026-03-15T10:00:00Z"
    },
    {
      "id": "msg-002",
      "seq": 2,
      "role": "assistant",
      "content": "好的,我来帮您创建日程。",
      "ui_schema": {
        "version": "2.0",
        "locale": "zh-CN",
        "status": "success",
        "theme": "default",
        "root": {
          "type": "stack",
          "appearance": "card",
          "children": [
            {"type": "text", "content": "日程已创建", "role": "title"},
            {"type": "badge", "label": "SUCCESS", "status": "success"},
            {"type": "text", "content": "您的会议日程创建成功", "role": "body"}
          ]
        }
      },
      "timestamp": "2026-03-15T10:00:05Z"
    }
  ]
}

Compatibility Notes

  • UserMessage.content 支持 string 或 array 格式,前端优先使用 array 格式以支持多模态
  • binary content 的 url 必须是有效的 signed URL,由 /api/v1/agent/attachments 端点生成
  • backend 验证通过后,会将 binary url 转换为内部存储路径
  • tools 是前端工具通道字段;当前后端运行时不基于该字段构造后端工具 prompt
  • RunAgentInput 同时接受 camelCase 与 snake_case 别名输入(推荐统一使用 camelCase)
  • 日历能力依赖 forwardedProps.client_time 透传设备时间上下文;缺失时回退用户 profile 时区
  • forwardedProps.agent_type 是受控路由字段,必须由调用方显式传入;后端 task 不做默认赋值
  • tool 消息在存储层用于运行时上下文续接,不在 /history 对外返回