NumProof for ChatGPT

io.github.projecttron/numproof

Deterministic signed verification of numeric & financial claims for AI agents & spreadsheets.

client:ChatGPT transport:streamable-http runtime:pypi tools:4

Install NumProof in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://numproof.com/mcp

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