toolpin for ChatGPT

dev.toolpin/toolpin

Check whether an MCP server answers, what its tools claim, and whether that claim has changed.

client:ChatGPT transport:streamable-http tools:6

Install toolpin in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://toolpin.dev/mcp

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