OpenAPI Docs MCP

OpenAPI Docs MCP

A vendor-neutral MCP server that lets coding agents search and understand OpenAPI/Swagger documents via stdio tools, without calling real backend APIs.

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OpenAPI Docs MCP

让编码 Agent 安全、准确地搜索和理解 OpenAPI / Swagger 文档。

npm version Node.js License

快速导航: 名称 · 简介 · 详细描述 · 项目状态 · 使用方法


名称

OpenAPI Docs MCP

npm 包:openapi-docs-mcp

简介

一个厂商无关的 MCP Server,让编码 Agent 能够搜索和理解 OpenAPI/Swagger 文档。

服务只读取接口文档,不会调用文档中描述的真实后端 API。它支持本地文件和远程地址,启动后使用内存索引提供稳定、快速的查询。

详细描述

OpenAPI Docs MCP 支持 OpenAPI 3.0、3.1 和 Swagger 2.0,可读取 JSON、YAML、本地文件及 HTTP(S) URL。

它提供 5 个 MCP 工具:

工具 作用
search_api 按关键词、路径、Tag、描述或 operationId 搜索接口
get_api 获取接口参数、请求体、响应和展开后的 Schema
get_schema 按名称读取组件 Schema
list_groups 列出 OpenAPI Tags 及接口数量
reload_document 重新加载文档,无需重启 MCP Server

核心能力

  • 支持中英文接口搜索,并对 Summary、Tag、Path 等字段进行确定性加权;
  • 按需展开本地 $ref,限制最大深度和属性数量;
  • 检测循环引用,并标记无法解析的引用;
  • 远程文档支持自定义请求头和超时;
  • 刷新失败时保留旧文档,不影响现有查询;
  • 通过 stdio 工作,可接入任意兼容 MCP 的 Agent 或 IDE。

项目状态

项目 状态
当前版本 0.1.4
运行环境 Node.js 20+
项目阶段 可用的早期版本
传输方式 stdio
许可证 MIT

说明: 当前暂不支持外部文件或 URL $ref、向量搜索、Streamable HTTP 部署以及真实后端 API 调用。

使用方法

方式一:通过 npx 运行(推荐)

无需安装或克隆项目,直接在 MCP Client 中启动:

{
  "mcpServers": {
    "project-api-docs": {
      "command": "npx",
      "args": [
        "-y",
        "openapi-docs-mcp@0.1.4",
        "--source",
        "https://api.example.com/v3/api-docs",
        "--timeout",
        "30000"
      ]
    }
  }
}

方式二:全局安装

安装后可以直接使用 openapi-docs-mcp 命令:

npm install --global openapi-docs-mcp@0.1.4
openapi-docs-mcp --source https://api.example.com/v3/api-docs --timeout 30000

对应的 MCP Client 配置:

{
  "mcpServers": {
    "project-api-docs": {
      "command": "openapi-docs-mcp",
      "args": [
        "--source",
        "https://api.example.com/v3/api-docs",
        "--timeout",
        "30000"
      ]
    }
  }
}

方式三:通过 mise 固定 Node.js

如果 MCP Client 使用了不兼容的 Node.js 或 npx,可以通过 mise 固定运行时版本:

mise exec node@24 -- npx --yes openapi-docs-mcp@0.1.4 \
  --source https://api.example.com/v3/api-docs \
  --timeout 30000

在 MCP Client 中,将 mise 作为启动命令:

{
  "mcpServers": {
    "project-api-docs": {
      "command": "mise",
      "args": [
        "exec",
        "node@24",
        "--",
        "npx",
        "--yes",
        "openapi-docs-mcp@0.1.4",
        "--source",
        "https://api.example.com/v3/api-docs",
        "--timeout",
        "30000"
      ]
    }
  }
}

提示: 不同 MCP Client 的外层配置字段可能是 mcpServersservers 或其他名称,但 commandargs 的内容相同。如果客户端找不到 mise,可通过 Windows 的 where.exe mise 或 macOS/Linux 的 which mise 查询路径,并将 command 替换为绝对路径。

方式四:同时连接多个项目

为每份 OpenAPI 文档配置一个独立的 MCP 实例:

{
  "mcpServers": {
    "order-api-docs": {
      "command": "npx",
      "args": [
        "-y",
        "openapi-docs-mcp@0.1.4",
        "--source",
        "https://order.example.com/v3/api-docs"
      ]
    },
    "user-api-docs": {
      "command": "npx",
      "args": [
        "-y",
        "openapi-docs-mcp@0.1.4",
        "--source",
        "https://user.example.com/v3/api-docs"
      ]
    }
  }
}

每个实例单独加载和刷新自己的文档,互不影响。

更多启动示例

读取本地文档

npx -y openapi-docs-mcp@0.1.4 --source ./openapi.yaml

读取需要鉴权的远程文档

npx -y openapi-docs-mcp@0.1.4 \
  --source https://api.example.com/v3/api-docs \
  --header Authorization="Bearer token" \
  --header X-Tenant-Id=tenant-1 \
  --timeout 30000

CLI 参数

参数 说明
-s, --source <value> OpenAPI 文件或 HTTP(S) URL,必填
--header NAME=VALUE 远程文档请求头,可重复使用
--timeout <ms> 远程加载超时,默认 10000 毫秒
--strict-validation 将所有 OpenAPI 校验警告视为错误
-h, --help 显示帮助

本地开发

pnpm install
pnpm test
pnpm build
node dist/cli.js --source ./openapi.json

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