How do I install the openapi mcp server?

Run it through your MCP client's configuration using `npx -y openapi-typescript-codegen`. Add the server block to Claude Desktop's config file (or use `claude mcp add` for Claude Code), restart the client, and the tools appear automatically. Full snippets are on this page.

Does the openapi mcp server need an API key?

No API key is documented for this server, so it should start without additional credentials. Because it runs locally, it inherits whatever access your machine already has — worth keeping in mind when you decide what to point it at.

Openapi MCP Server — Setup Guide for Claude

Name: Openapi MCP Server
Author: ferdikoomen

What is the Openapi MCP server?

Library that generates Typescript clients based on the OpenAPI specification. The openapi mcp server wraps that behind the Model Context Protocol, so an assistant can use it rather than through you.

What it actually does

Due to time limitations on my end, this project has been unmaintained for a while now. The @hey-api/openapi-ts project started as a fork with the goal to resolve the most pressing issues. going forward they are planning to maintain the OpenAPI generator and give it the love it deserves. Please support them with their work and make sure to migrate your projects: https://heyapi.dev/openapi-ts/migrating.html#openapi-typescript-codegen

Frontend ❤️ OpenAPI, but we do not want to use JAVA codegen in our builds
Quick, lightweight, robust and framework-agnostic 🚀
Supports generation of TypeScript clients
Supports generations of Fetch, Node-Fetch, Axios, Angular and XHR http clients
Supports OpenAPI specification v2.0 and v3.0
Supports JSON and YAML files for input

Adding it to your client

Installation goes through your MCP client rather than a global install: point it at openapi-typescript-codegen on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

When to reach for it

Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. It is maintained by ferdikoomen; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Caveats

It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
MCP clients confirm each tool call by default. Leave that on until you have watched what the openapi mcp server does with a few real requests.

How to install the Openapi MCP server

{
  "mcpServers": {
    "openapi-mcp-codegen": {
      "command": "npx",
      "args": ["-y", "openapi-typescript-codegen"]
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Frequently asked questions

It connects Openapi to MCP-compatible AI assistants such as Claude and Cursor. Instead of copying data back and forth by hand, the assistant works with Openapi directly.

Openapi MCP Server

What is the Openapi MCP server?

What it actually does

Adding it to your client

When to reach for it

Caveats

How to install the Openapi MCP server

Frequently asked questions

Alternatives to the Openapi MCP server

Context7

Playwright

GitHub

Linear

Git

Time

Openapi MCP Server

What is the Openapi MCP server?

What it actually does

Adding it to your client

When to reach for it

Caveats

How to install the Openapi MCP server

Frequently asked questions

What does the openapi mcp server do?

How do I install the openapi mcp server?

Does the openapi mcp server need an API key?

Alternatives to the Openapi MCP server

Context7

Playwright

GitHub

Linear

Git

Time