Penny x402 utilities for ChatGPT

io.github.pennyops/penny-x402-utils

Pay-per-call dev utilities (hash, base64, uuid, URL, time, NIP-19, BOLT11) via x402 USDC on Base.

client:ChatGPT transport:streamable-http tools:8

Install Penny x402 utilities in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://pennyagent.pythonanywhere.com/mcp

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