ProofSnap for ChatGPT

com.getproofsnap/proofsnap

Capture web pages as signed, timestamped evidence; compare, watch and verify them.

client:ChatGPT transport:streamable-http

Install ProofSnap in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.getproofsnap.com/mcp

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