Live Listing Proof for ChatGPT

dev.workers.mattskowronis.live-listing-proof/verify-listing

Verify a public listing URL and return source-supported facts or explicit fail-closed states.

client:ChatGPT transport:streamable-http

Install Live Listing Proof in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://live-listing-proof.mattskowronis.workers.dev/mcp

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