# OpenAPI

> Use this tool when you need to integrate external APIs into your AI workflows or expose REST APIs defined by OpenAPI specifications as MCP tools. It solves the problem of cumbersome API integration by dynamically registering API endpoints and allowing customization of tool naming. The OpenAPI server takes OpenAPI specifications as input and outputs registered API endpoints as MCP tools, making it ideal for developers seeking to incorporate diverse APIs into their AI systems.

Canonical page: https://skillsregistry.net/skills/matthewhand-openapi-proxy  
JSON: https://api.skillsregistry.net/v1/skills/matthewhand-openapi-proxy

## Description

This MCP server, developed by Matthew Hand, dynamically exposes REST APIs defined by OpenAPI specifications as MCP tools. Built with Python and leveraging libraries like FastAPI and Pydantic, it offers two operation modes: a low-level mode that registers all API endpoints as separate tools, and a FastMCP mode for simplified exposure of specific endpoints. The implementation focuses on flexibility, allowing users to filter endpoints and customize tool naming. By connecting AI models with any OpenAPI-described API, this server enables seamless integration of external services into MCP-based workflows. It's particularly useful for developers and organizations looking to quickly incorporate diverse APIs into their AI systems without extensive custom coding.

## Trust

- **Trust score (0–1):** 0.44
- **Verification tier:** scanned
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** api-integration
- **Updated:** 2026-09-19

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/matthewhand-openapi-proxy)
- **Repository:** <https://github.com/matthewhand/mcp-openapi-proxy>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "matthewhand-openapi-proxy"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/matthewhand-openapi-proxy` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/matthewhand-openapi-proxy/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt