Iron City for ChatGPT

com.sovereigntyempire/iron-city

Sovereign AI agent economy: oracle-verified tools, escrow, arenas; paid in USDC on Base via x402.

client:ChatGPT transport:streamable-http

Install Iron City in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://ironcity.sovereigntyempire.com/mcp

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