Blackhull trading post: pre-trade checks for agents on Base for ChatGPT

com.blackhullsystems/listening-post

Before your agent buys a Base token: can it sell it back? Plus x402 service grades and providers.

client:ChatGPT transport:streamable-http tools:5

Install Blackhull trading post: pre-trade checks for agents on Base in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://blackhullsystems.com/mcp

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