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Automatically convert RESTful APIs (Swagger 2.0 / OpenAPI 3.0) into MCP Servers

Project description

MCP RESTful Adapter

将 RESTful API(Swagger 2.0 / OpenAPI 3.0)自动转换为 MCP Server。每个 API 端点变成一个 MCP Tool。

快速开始

1. 在 Claude Desktop / Cursor / Claude Code 中使用

编辑配置文件(Claude Desktop: ~/Library/Application Support/Claude/claude_desktop_config.json):

从 PyPI 安装(推荐):

{
  "mcpServers": {
    "petstore": {
      "command": "uvx",
      "args": ["mcp-restful-adapter"],
      "env": {
        "API_SPEC_URL": "https://petstore3.swagger.io/api/v3/openapi.json",
        "API_BASE_URL": "https://petstore3.swagger.io/api/v3",
        "API_TAGS": "pet,store"
      }
    }
  }
}

本地开发(未发布时):

{
  "mcpServers": {
    "petstore": {
      "command": "uv",
      "args": [
        "run",
        "--project", "/path/to/mcp-restful-adapter",
        "mcp-restful-adapter"
      ],
      "env": {
        "API_SPEC_URL": "https://petstore3.swagger.io/api/v3/openapi.json",
        "API_BASE_URL": "https://petstore3.swagger.io/api/v3",
        "API_TAGS": "pet,store"
      }
    }
  }
}

/path/to/mcp-restful-adapter 替换为本项目的实际路径。

配置完成后,Claude 就能直接调用 Petstore 的 API 了:

  • findPetsByStatus(status="available") → 查询可用宠物
  • getPetById(petId=1) → 查询宠物详情
  • addPet(name="Buddy", ...) → 创建宠物

2. 在终端中使用

# PyPI 版本
API_SPEC_URL=https://petstore3.swagger.io/api/v3/openapi.json \
API_BASE_URL=https://petstore3.swagger.io/api/v3 \
API_TAGS=pet \
uvx mcp-restful-adapter

# 本地开发
API_SPEC_URL=https://petstore3.swagger.io/api/v3/openapi.json \
API_BASE_URL=https://petstore3.swagger.io/api/v3 \
API_TAGS=pet \
uv run mcp-restful-adapter

3. 带认证的 API

{
  "mcpServers": {
    "my-api": {
      "command": "uvx",
      "args": ["mcp-restful-adapter"],
      "env": {
        "API_SPEC_URL": "https://your-api.example.com/openapi.json",
        "API_BASE_URL": "https://your-api.example.com",
        "API_HEADERS": "{\"Authorization\": \"Bearer your-bearer-token\", \"X-Tenant\": \"acme\"}"
      }
    }
  }
}

环境变量

变量 说明 默认值
API_SPEC_URL OpenAPI/Swagger 文档地址 必填
API_BASE_URL 后端 API 地址 必填
API_TAGS Tag 白名单,逗号分隔,OR 逻辑(匹配任一 tag 即保留) 全部
API_METHODS HTTP 方法白名单,逗号分隔 全部
API_PATHS 路径正则白名单(re.search 匹配) 全部
API_PATHS_EXCLUDE 路径正则黑名单(白名单优先,见下方说明)
API_HEADERS 自定义请求头(JSON 格式,含认证等)
LOG_LEVEL 日志级别(INFO 显示启动信息,DEBUG 记录请求头和 body) WARNING

白名单 / 黑名单策略

API_PATHS(白名单)和 API_PATHS_EXCLUDE(黑名单)配合使用,白名单优先

白名单命中 → 放行(不再检查黑名单)
白名单未命中 + 黑名单命中 → 排除
白名单未命中 + 黑名单未命中 → 排除
仅配置黑名单(无白名单) → 未命中黑名单的放行

推荐配置 — 只暴露只读查询接口:

{
  "API_METHODS": "GET",
  "API_PATHS": "(?i)(get|query|detail|page|select|list|search|info|find|fetch|tree|export|download|template|count|stat|check|\\{[a-zA-Z]+\\})",
  "API_PATHS_EXCLUDE": "(?i)(save|update|delete|remove|create|add|clear|sync|generate|import|handle|flush|send|complete|fix|reset|process|submit|approve|cancel|enable|disable|trigger|notify|push|pull|upload|revoke|grant|bind|unbind|transfer|lock|unlock|batch)"
}

过滤示例

# 只要 GET 请求
API_METHODS=GET

# 只要 pet 或 store 相关的端点
API_TAGS=pet,store

# 只要 /api/v1/ 开头的路径
API_PATHS=^/api/v1/

# 排除包含 delete/remove 的路径(黑名单)
API_PATHS_EXCLUDE=(?i)(delete|remove)

# 组合使用:pet tag 下的 GET 和 POST
API_TAGS=pet
API_METHODS=GET,POST

# 只读查询(白名单 + 黑名单 + GET)
API_METHODS=GET
API_PATHS=(?i)(get|query|detail|page|list|search)
API_PATHS_EXCLUDE=(?i)(save|update|delete|remove|create)

开发

uv sync                                    # 安装依赖
uv run mcp-restful-adapter                 # 运行
uv run pytest tests/ -v                    # 运行测试
uv run pytest tests/ --cov=mcp_restful_adapter  # 覆盖率

示例代码

文件 说明
examples/agent_usage.py Agent 中使用 — 连接 MCP Server、列出 tools、调用 tools
examples/claude_desktop_config.json Claude Desktop 配置模板
uv run python examples/agent_usage.py

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