proofetch for ChatGPT

io.github.vektoris-ai/proofetch

Verified extraction: source-backed JSON from PDFs/URLs; honest null + signed receipt.

client:ChatGPT transport:streamable-http

Install proofetch in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://proofetch-vektoris-ai-workflows.vercel.app/mcp

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