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OpenAPI MCP Server

@ivo-toby

代码仓库

基本信息

分类

其他

许可证

MIT

传输方式

stdio

作者

ivo-toby

关于 OpenAPI MCP Server

MCP Server (Model Context Protocol) for turning OpenAPI specifications into a MCP Resource

OpenAPI MCP Server 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "mcp-openapi-server": {
      "command": "npx",
      "args": [
        "@ivotoby/openapi-mcp-server",
        "\\"
      ]
    }
  }
}

OpenAPI MCP Server 工具

工具列表暂未提供

当前收录暂时没有可展示的工具列表，不代表服务没有工具。请查阅项目文档了解支持的能力。

点击上方按钮,在临时沙箱中运行此服务器并实时获取工具列表。

概览

What is OpenAPI MCP Server?

A Model Context Protocol (MCP) server that exposes OpenAPI endpoints as MCP tools, with optional support for MCP prompts and resources. It enables Large Language Models to discover and interact with REST APIs defined by OpenAPI specifications.

How to use OpenAPI MCP Server?

Use the CLI directly with npx @ivotoby/openapi-mcp-server or import the OpenAPIServer class as a library in your Node.js application. Configure via environment variables (e.g., API_BASE_URL, OPENAPI_SPEC_PATH) or command‑line flags (e.g., --api-base-url, --openapi-spec). Supports both stdio (default) and HTTP transport.

Key features of OpenAPI MCP Server

  • Exposes OpenAPI endpoints as MCP tools automatically
  • Supports loading OpenAPI specs via URL, file, stdin, or inline
  • Two transports: stdio (default) and Streamable HTTP
  • Mutual TLS (mTLS) support for upstream API authentication
  • Tool loading modes: all, dynamic, or explicit
  • Filtering by tags and custom headers

Use cases of OpenAPI MCP Server

  • Connect Claude Desktop to any REST API via OpenAPI spec
  • Allow LLMs to dynamically discover and invoke API actions
  • Provide structured tools for API‑driven autonomous agents
  • Load private APIs using mTLS or custom CA certificates
  • Use with Cursor or any MCP‑compatible client

常见问题

1

What transport methods does OpenAPI MCP Server support?

Stdio (default) for direct integration with AI systems like Claude Desktop, and Streamable HTTP for web clients and HTTP‑capable systems.

2

How can I load an OpenAPI specification?

Four methods: provide a URL or local file path with `--openapi-spec`, pipe the spec via standard input with `--spec-from-stdin`, pass the spec inline with `--spec-inline`, or use the corresponding environment variables. Only one source is allowed at a time.

3

How do I authenticate to the upstream API?

You can set static headers via `--headers` / `API_HEADERS`, or use mutual TLS with `--client-cert` and `--client-key` options. mTLS is orthogonal to header‑based authentication.

4

What is the default transport and how do I change it?

The default transport is `stdio`. Switch to HTTP by setting `--transport http` (or the `TRANSPORT_TYPE` environment variable). The HTTP server listens on `127.0.0.1:3000` by default.

5

Can I use OpenAPI MCP Server as a library?

Yes. Import the `OpenAPIServer` class in your own Node.js applications for custom implementations, instead of using the CLI tool.

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