PayCheck for ChatGPT

io.github.toolweather/paycheck

Score merchant domain, https URL, or 0x wallet trust before an agent pays. Does not send payments.

client:ChatGPT transport:streamable-http tools:3

Install PayCheck in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://paycheck.toolweather.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