Agent-to-Agent Payments Are Here: x402 Protocol Explained

Autonomous AI agents need to pay each other. x402 protocol enables this.

How it works:

1. Agent calls x402-protected API
2. HTTP 402 challenge triggers payment
3. On-chain settlement on Polygon/Solana
4. Agent receives gated response

Live providers: Exa AI, Venice AI, io.net

SDK:

pip install aifinpay-agent --pre
npm install @aifinpay/agent@alpha

Website: https://aifinpay.company