ReceiptRail for ChatGPT

io.github.xka0085-byte/receiptrail

Read-only on-chain receipt check for x402 payments; confirm settlement before trusting a tx.

client:ChatGPT transport:streamable-http tools:3

Install ReceiptRail in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://agenttoll-receipts.app.workbuddy.host/mcp

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