Quickstart Guide

Get AI agent crypto microservices running in under 5 minutes.

Step 1: Install

Install the SDK for your language: npm install @coinrailz/agent-payments or pip install coinrailz. Docker image also available: docker pull tdnupe3/agent-payments.

Step 2: Configure

Set your USDC wallet address and private key as environment variables. The SDK handles wallet generation, payment signing, and x402 protocol negotiation automatically.

Step 3: Execute

Make your first API call. The SDK automatically detects 402 Payment Required responses, signs and submits USDC payment, and retries with the payment proof.

• 78 APIs available immediately after setup
• First call free with no wallet setup needed (API key path)
• Full x402 path: pay with USDC on Base for advanced usage