Invoice Preflight x402 MCP for Gemini CLI

io.github.ahmet11159/invoice-preflight

Invoice checks for AI agents: UBL/PDF/image, line items, evidence, free tier quote, x402 USDC.

client:Gemini CLI transport:streamable-http tools:3

Install Invoice Preflight x402 MCP in Gemini CLI

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

{
  "mcpServers": {
    "invoice-preflight": {
      "httpUrl": "https://mcp.dropenginehq.com/api/paid-mcp"
    }
  }
}

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