OpenAPI MCP Server

@FusionWorks

Basic information

About OpenAPI MCP Server

No overview available yet

OpenAPI MCP Server config

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

{
  "mcpServers": {
    "openapi-server": {
      "command": "node",
      "args": [
        "/path/to/your/openapi-mcp-server/dist/index.js",
        "--schema",
        "/path/to/your/openapi-schema.yaml"
      ]
    }
  }
}

OpenAPI 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 Mcp Server?

OpenAPI Mcp Server exposes any REST API as an MCP (Model Context Protocol) server based on its OpenAPI schema. It automatically generates MCP tools from OpenAPI operations with comprehensive support for OpenAPI 3.0+ schemas in JSON and YAML formats.

How to use OpenAPI Mcp Server?

Install and build the project with npm install && npm build. Run it using npm start -- --schema <path-to-schema> [options]. You can also add the server to Claude Desktop by editing its configuration file and providing the full path to the built index.js and your schema file.

Key features of OpenAPI Mcp Server

Complete OpenAPI 3.0+ support with JSON and YAML parsing
Advanced schema processing: $ref resolution and composition (oneOf/anyOf/allOf)
Automatic MCP tool generation with rich descriptions and validation
Multiple content types: JSON, XML, form data, multipart uploads
Authentication via HTTP Basic Auth or custom headers
TypeScript implementation with 90%+ test coverage

Use cases of OpenAPI Mcp Server

Instantly turn any REST API into MCP tools for AI assistants
Securely integrate authenticated APIs with Claude Desktop
Quickly expose OpenAPI-defined microservices to AI agents
Combine multiple REST APIs under a unified MCP server configuration

Frequently asked questions

What OpenAPI versions does it support?

It supports OpenAPI 3.0+ schemas in JSON and YAML formats.

How do I add authentication?

You can use HTTP Basic Authentication via `--username` and `--password` options, or add custom headers (e.g., Bearer tokens) using the `--headers` option. Both can be combined.

What are the runtime requirements?

It requires Node.js and npm. You need to install dependencies and build the project before running.

Where does the data live?

The server does not store data locally; it fetches data from the configured REST API endpoints and returns responses directly.

What transport and authentication methods are supported?

The server uses the standard MCP stdio transport. Authentication supports HTTP Basic Auth and arbitrary custom headers passed via command line.

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