ToolAPI for ChatGPT

org.toolapi/hub

Free public MCP for AI agents — 193 tools, 44 workflows. No API key.

client:ChatGPT transport:sse

Install ToolAPI in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://toolapi.org/sse

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs