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

com.blackhullsystems/listening-post

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

client:Gemini CLI transport:streamable-http tools:5

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

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "listening-post": {
      "httpUrl": "https://blackhullsystems.com/mcp"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs