# openapi2mcp

> openapi2mcp — rjl667-openapi2mcp. Use this tool when you need to convert OpenAPI 3.x or Swagger 2.0 specifications into a working MCP stdio server, handling multi-file specs, external references, and relative server URLs. It solves the problem of automating API server generation from OpenAPI definitions, supporting complex specs with high accuracy. Ideal for use cases involving large-scale API integration, such as surveying public APIs or building API gateways.

Canonical page: https://skillsregistry.net/skills/rjl667-openapi2mcp  
JSON: https://api.skillsregistry.net/v1/skills/rjl667-openapi2mcp

## Description

OpenAPI 3.x / Swagger 2.0 -> working MCP stdio server. Multi-file specs, external $refs, relative server URLs. 245/250 public APIs digested unattended (schema-level survey, apis.guru).

## Trust

- **Trust score (0–1):** 0.93
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/RJL667/openapi2mcp)

## 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": "rjl667-openapi2mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/rjl667-openapi2mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/rjl667-openapi2mcp/pull`

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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