Advertise
MCP.so
Sign In

Openapi To MCP Server

@ouvreboite

Repository

Basic information

Category

Other

License

MIT

Transports

stdio

Author

ouvreboite

Submitted by

Jean-Baptiste Muscat

About Openapi To MCP Server

An MCP server for your API

#openapi#api

Openapi To MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "petstore": {
      "command": "openapi-to-mcp",
      "args": [
        "https://petstore3.swagger.io/api/v3/openapi.json"
      ]
    }
  }
}

Openapi To MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Openapi To Mcp?

Openapi To Mcp is a .NET tool that reads an OpenAPI specification and exposes each API endpoint as a strongly typed MCP tool, enabling AI assistants to interact with any REST API via the Model Context Protocol.

How to use Openapi To Mcp?

Install the .NET global tool via dotnet tool install --global openapi-to-mcp or download the pre-built executable from releases. Then configure your MCP client (e.g., Claude Desktop) with the command openapi-to-mcp <open-api> where <open-api> is a URL or file path to the OpenAPI specification. Additional options include authentication (bearer token, OAuth2), tool naming strategy, and host override.

Key features of Openapi To Mcp

  • Converts OpenAPI 2.0 and 3.0 specs (JSON/YAML) into MCP tools
  • Supports bearer token and OAuth2 (client_credentials, password, refresh_token)
  • Configurable tool naming strategy: operationId, verb+path, or extension
  • Custom OpenAPI extensions for instructions, tool name, description, and enable/disable
  • Only STDIO transport; local file or remote URL specs supported
  • Tools are discarded if name does not match ^[a-zA-Z0-9_-]{1,64}$

Use cases of Openapi To Mcp

  • Expose a private API to an MCP-compatible AI assistant without writing custom adapters
  • Quickly turn any public API with an OpenAPI spec into consumable tools for agents
  • Integrate GitHub API (or similar) with authentication into a Claude Desktop session
  • Enable AI to call your REST endpoints using strongly typed parameters from the spec

Frequently asked questions

1

Does Openapi To Mcp support OpenAPI 3.1?

No, currently only OpenAPI 2.0 and 3.0 are supported. 3.1 will be supported once the underlying OpenAPI.NET library adds support.

2

What runtime or dependencies are required?

The tool runs on .NET and is installed as a .NET global tool. Pre-built executables are also available for systems without .NET.

3

Which MCP transport is used?

Only STDIO transport is currently supported – no SSE or other transports.

4

How does authentication work?

You can provide a bearer token via `--bearer-token` (added as `Authorization: Bearer` header) or use OAuth2 with the appropriate options (client credentials, password, or refresh token). The tool can read token URLs from the OpenAPI specification.

5

Can I override the host that the tool calls?

Yes, use the `--host-override` option. If not provided, the host is determined from the spec’s server URL (first absolute URL) or the remote spec’s own host.

Comments

More Other MCP servers

Lemon.io

lemon-io

Request dedicated senior developers to work on your project, write job descriptions, and prep technical interviews — all without leaving your Claude chat. Just describe what you need, and Lemon.io MCP does the rest. 1–3

🚀 Model Context Protocol (MCP) Curriculum for Beginners

microsoft

This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) through real-world, cross-language examples in .NET, Java, TypeScript, JavaScript, Rust and Python. Designed for developers, it focuses on practical techniques for building modular, scalable,

16.7K

EverArt

modelcontextprotocol

Model Context Protocol Servers

88.1K

Screenpipe

screenpipe

YC (S26) | Open Computer History | Continuously record your company computer work, map your workflows, help you find work worth automating, and power your agents' context

22.0K

DeepMark

DeepMark helps teachers deliver rapid, consistent marking with meaningful feedback for every student — in a fraction of the time. What once took a week, now takes one free period.

Advertise