MCP Openapi MCP Server

MCP (Model Context Protocol) server for OpenAPI specifications - loads and serves multiple OpenAPI specs to enable LLM-powered IDE integrations

Local serverstdioTypeScript

What is the MCP Openapi MCP server?

If you already use MCP Openapi, the mcp openapi mcp server is the piece that lets your assistant work with it directly. MCP (Model Context Protocol) server for OpenAPI specifications - loads and serves multiple OpenAPI specs to enable LLM-powered IDE integrations.

What the server does

  • Loads multiple OpenAPI specifications from a directory
  • Exposes API operations and schemas through MCP protocol
  • Enables LLMs to understand and work with your APIs directly in your IDE
  • Supports dereferenced schemas for complete API context
  • Maintains a catalog of all available APIs

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • Returns — Success message when catalog is refreshed
  • Inputs — - query (string): Search query

Installation

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.

Where it fits

Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. MCP Openapi's toolset — Returns, Inputs — is a fair guide to whether it matches your workflow. It is maintained by ReAPI-com; 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.

Worth knowing first

  • 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.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
ReturnsSuccess message when catalog is refreshed
Inputs- query (string): Search query

How to install the MCP Openapi MCP server

{
  "mcpServers": {
    "@reapi/mcp-openapi": {
      "command": "npx",
      "args": ["-y", "@reapi/mcp-openapi@latest", "--dir", "./specs"],
      "env": {}
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Example prompts to try

  • Use MCP Openapi to Returns.
  • Use MCP Openapi to Inputs.

Frequently asked questions

It connects MCP Openapi to MCP-compatible AI assistants such as Claude and Cursor, exposing 2 tools (Returns, Inputs) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with MCP Openapi directly.