SendCheck — EVM address verification (x402) for ChatGPT

org.pennyforge.api/sendcheck

Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.

client:ChatGPT transport:streamable-http tools:3

Install SendCheck — EVM address verification (x402) in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.pennyforge.org/mcp

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