whistle-mcp
Enables AI to manage whistle mock rules, values, and inspect network sessions, facilitating API mocking and debugging through natural language.
README
whistle-mcp
MCP (Model Context Protocol) Server for whistle - 让 AI 直接操作 whistle 的 Mock 数据。
安装
# 全局安装(推荐)
npm install -g whistle-mcp
# 或直接用 npx,无需安装
npx whistle-mcp
配置
方式一:Cursor
编辑 Cursor 的 MCP 配置文件(~/.cursor/mcp.json):
{
"mcpServers": {
"whistle": {
"command": "npx",
"args": ["-y", "whistle-mcp"],
"env": {
"WHISTLE_BASE_URL": "http://127.0.0.1:8899",
"WHISTLE_USERNAME": "",
"WHISTLE_PASSWORD": ""
}
}
}
}
全局安装后也可以写成:
{
"mcpServers": {
"whistle": {
"command": "whistle-mcp",
"env": {
"WHISTLE_BASE_URL": "http://127.0.0.1:8899"
}
}
}
}
方式二:Claude Desktop
编辑 ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) 或 %APPDATA%\Claude\claude_desktop_config.json (Windows):
{
"mcpServers": {
"whistle": {
"command": "npx",
"args": ["-y", "whistle-mcp"],
"env": {
"WHISTLE_BASE_URL": "http://127.0.0.1:8899",
"WHISTLE_USERNAME": "",
"WHISTLE_PASSWORD": ""
}
}
}
}
如果 whistle 启用了鉴权(
w2 start -u admin -p 123456),请填写WHISTLE_USERNAME和WHISTLE_PASSWORD。
方式三:其他 MCP 客户端
任何支持 stdio 传输的 MCP 客户端都可以使用:
WHISTLE_BASE_URL=http://127.0.0.1:8899 \
WHISTLE_USERNAME=admin \
WHISTLE_PASSWORD=123456 \
npx -y whistle-mcp
功能
规则管理
whistle_rule_list- 获取所有规则列表whistle_rule_get- 获取规则内容whistle_rule_set- 创建/更新规则whistle_rule_remove- 删除规则whistle_rule_enable/whistle_rule_disable- 启用/禁用规则
Values 管理
whistle_value_list- 获取所有 Valueswhistle_value_get- 获取 Value 内容whistle_value_set- 创建/更新 Valuewhistle_value_remove- 删除 Value
Mock 工作流
whistle_mock_create- 一键创建完整 Mock 方案(规则 + Values)whistle_mock_apply- 启用/禁用 Mock 规则
抓包数据查看
whistle_sessions_list- 获取最近抓包的 session 列表,可按 URL / HTTP 方法过滤whistle_session_get- 获取单个请求的完整详情,自动解析 Query 参数、POST 参数和响应 JSON 字段树whistle_sessions_search- 按请求参数名(query/POST body)或响应 JSON 字段名搜索抓包,例如"哪些请求带了 token 参数"、"哪些接口返回了 address 字段"
系统状态
whistle_status- 检查 whistle 服务状态whistle_server_info- 获取服务器信息
环境变量
| 变量 | 默认值 | 说明 |
|---|---|---|
WHISTLE_BASE_URL |
自动探测 | whistle Web UI 地址。不设置时会自动读取 ~/.startingAppData/ 状态文件探测运行中的实例 |
WHISTLE_USERNAME |
`` | whistle 鉴权用户名(可选) |
WHISTLE_PASSWORD |
`` | whistle 鉴权密码(可选) |
端口自动探测
MCP Server 启动时会自动检测运行中的 whistle 实例(不管用什么端口启动),优先级:
- 环境变量
WHISTLE_BASE_URL(显式指定,最高优先级) - whistle 状态文件
~/.startingAppData/(自动探测) - 默认
http://127.0.0.1:8899(fallback)
所以即使你 w2 start -p 8888 用别的端口启动,也能自动识别,无需改配置。
使用示例
1. 创建 Mock 接口
AI 指令:
帮我创建一个 Mock,当请求
api.example.com/user/info时返回用户数据
AI 会调用:
{
"tool": "whistle_mock_create",
"arguments": {
"pattern": "api.example.com/user/info",
"response": {
"code": 200,
"data": {
"id": 12345,
"name": "张三",
"email": "zhangsan@example.com"
}
},
"statusCode": 200,
"delay": 100
}
}
2. 管理规则
AI 指令:
列出所有 whistle 规则
AI 会调用:
{
"tool": "whistle_rule_list"
}
3. 更新 Mock 数据
AI 指令:
把用户 Mock 数据里的邮箱改成 lisi@example.com
AI 会调用:
{
"tool": "whistle_value_set",
"arguments": {
"name": "mock_value_1234567890",
"content": "{\"statusCode\":200,\"headers\":{\"Content-Type\":\"application/json\"},\"body\":{\"code\":200,\"data\":{\"id\":12345,\"name\":\"张三\",\"email\":\"lisi@example.com\"}}}"
}
}
4. 查看抓包数据
AI 指令:
帮我看看最近有没有抓到 api.vip.com 的请求
AI 会调用:
{
"tool": "whistle_sessions_list",
"arguments": {
"urlFilter": "api.vip.com",
"count": 10
}
}
AI 指令:
查看最后一个请求的完整响应数据
AI 会调用:
{
"tool": "whistle_session_get",
"arguments": {
"id": "abc123-def456"
}
}
5. 按参数/字段搜索抓包
AI 指令:
查一下最近有没有请求带了 userId 参数
AI 会调用:
{
"tool": "whistle_sessions_search",
"arguments": {
"param": "userId",
"count": 50
}
}
AI 指令:
看看最近 POST 到 api.vip.com 的接口,返回的数据里有没有 address 字段
AI 会调用:
{
"tool": "whistle_sessions_search",
"arguments": {
"urlFilter": "api.vip.com",
"method": "POST",
"field": "address",
"count": 50
}
}
前置条件
-
whistle 已安装并运行:
npm i -g whistle w2 start -
确认 whistle Web UI 可访问:
curl http://127.0.0.1:8899/cgi-bin/status
架构
┌─────────────┐ MCP (stdio) ┌──────────────────┐ HTTP ┌─────────────┐
│ AI Client │ ◄──────────────────► │ whistle-mcp-server│ ◄─────────────► │ whistle │
│ (Claude/ │ │ (Node.js) │ │ (127.0.0.1 │
│ Cursor) │ │ │ │ :8899) │
└─────────────┘ └──────────────────┘ └─────────────┘
│
▼
┌─────────────┐
│ ~/.whistle/ │
│ rules/ │
│ values/ │
└─────────────┘
开发
本地测试
# 启动 whistle
w2 start
# 启动 MCP Server(开发模式)
npm run dev
# 测试 MCP 协议
echo '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' | node src/index.js
调试
查看 whistle Web UI 的 CGI 接口:
# 规则列表
curl http://127.0.0.1:8899/cgi-bin/rules/list
# Values 列表
curl http://127.0.0.1:8899/cgi-bin/values/list
License
MIT
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