Cryptorefills x402 — Autonomous Agent Commerce

Fully autonomous purchasing for AI agents with crypto wallets. No accounts, no OAuth, no API keys — just USDC on Base and a signing key.

Built on the x402 protocol — HTTP 402 Payment Required as a machine-to-machine payment standard.

For human-guided purchases with multiple payment methods, follow the instructions in cryptorefills-buy instead. For browse-only catalog exploration, follow cryptorefills-catalog instead.

When the user needs multi-currency payment options or human-guided purchasing, switch to the cryptorefills-buy skill instructions.

When to Activate

• Agent has a wallet with USDC on Base and can sign EIP-712 messages
• Task requires autonomous purchasing without human payment interaction
• No account setup, OAuth flow, or API key management is desired
• Keywords: "buy with USDC", "autonomous purchase", "agent commerce", "x402 payment", "programmatic gift card"
• Use case: automated gift card procurement, travel eSIM provisioning, programmatic rewards