mcp-openapi-swagger
mcp-openapi-swagger
一个基于 NodeJS 的 MCP Server:输入 OpenAPI JSON URL 或 Swagger UI URL,自动抓取/解析文档并返回接口清单(summary 级),供 Cursor 的提示词继续处理。
你会得到什么
支持两种输入:
OpenAPI JSON URL(例如
/openapi.json、/v3/api-docs)Swagger UI URL(例如
/swagger-ui/index.html),会自动发现其背后的 spec URL
输出:
method + path + summary + tags + operationId
安装依赖与构建
npm install
npm run build构建产物在 dist/,并且已配置 bin,可以被 npx 直接执行。
在 Cursor 配置 MCP(npx 启动本地目录)
项目内已提供示例配置:.cursor/mcp.json。
关键配置如下(示例):
{
"mcpServers": {
"openapi-swagger": {
"transport": "stdio",
"command": "npx",
"args": ["-y", "E:/API-MCP"],
"env": {
"OPENAPI_SOURCE_URL": "https://example.com/v3/api-docs"
}
}
}
}把
E:/API-MCP替换成你本机的项目根目录路径。你也可以把
OPENAPI_SOURCE_URL配成 Swagger UI 地址(例如https://example.com/swagger-ui/index.html)。
工具(Tools)
openapi_setSource
缓存一个文档地址,后续 openapi_listEndpoints 可省略入参。
输入:
{ "sourceUrl": "https://example.com/swagger-ui/index.html" }openapi_listEndpoints
抓取并解析 OpenAPI,然后返回接口清单(summary 级)。
输入(两种用法二选一):
{ "sourceUrl": "https://example.com/v3/api-docs" }或(使用已缓存的 source):
{}如果你在
.cursor/mcp.json里配置了OPENAPI_SOURCE_URL,那么第一次调用openapi_listEndpoints直接传{}就能生效。
输出示例:
{
"ok": true,
"source": {
"inputUrl": "https://example.com/swagger-ui/index.html",
"resolvedSpecUrl": "https://example.com/v3/api-docs",
"openapiVersion": "3.0.3"
},
"endpoints": [
{
"method": "GET",
"path": "/pets/{id}",
"operationId": "getPetById",
"summary": "Get a pet",
"tags": ["pets"]
}
]
}失败时输出示例(便于提示词分支处理):
{
"ok": false,
"stage": "fetch/parse/extract",
"inputUrl": "https://example.com/swagger-ui/index.html",
"details": {
"name": "Error",
"message": "Failed to discover spec URL from Swagger UI page"
}
}运行/调试
npm run dev如果你要验证 npx 启动(Cursor 同款):
npx -y E:/API-MCPLatest Blog Posts
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