OpenAI-compatible chat completions over x402 — point any OpenAI SDK at base_url https://agent402.tools/v1 and pay per call in USDC (Base, Solana, Polygon, Arbitrum), no API key, no signup. Budget/mid models: gpt-4o-mini, claude haiku, gemini flash...
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.02 USDC | 0xaBF4...a9D0 |
| Polygon | exact | $0.02 USDC | 0xaBF4...a9D0 |
| Arbitrum One | exact | $0.02 USDC | 0xaBF4...a9D0 |
| eip155:4663 | exact | 0.02 tokens | 0xaBF4...a9D0 |
| solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp | exact | 0.02 tokens | J7aN3P...3xwg |