Keystone for ChatGPT

io.github.srikarmk/keystone

What an arXiv paper builds on, disputes and assumes, read verbatim from its LaTeX. No LLM.

client:ChatGPT transport:streamable-http tools:3

Install Keystone in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://keystone-research.vercel.app/api/mcp

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