Chain Check (x402) for Gemini CLI

app.netlify.chaincheck-api/chaincheck

x402-paid on-chain tools: wallet report, contract scan, token risk, gas, address labels (USDC/Base)

client:Gemini CLI transport:streamable-http tools:6

Install Chain Check (x402) in Gemini CLI

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

{
  "mcpServers": {
    "chaincheck": {
      "httpUrl": "https://chaincheck-api.netlify.app/mcp"
    }
  }
}

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