cryptorefills-x402
Cryptorefills x402 — Autonomous Agent Commerce
Fully autonomous purchasing for AI agents with crypto wallets. No accounts, no OAuth, no API keys — just stablecoin and a signing key.
Built on the x402 protocol — HTTP 402 Payment Required as a machine-to-machine payment standard. Two settlement rails are supported: Base (USDC on Ethereum L2, default) and Solana (USDC SPL on Solana mainnet, opt-in).
For human-guided purchases with multiple payment methods, follow cryptorefills-buy instead. For browse-only catalog exploration, follow cryptorefills-catalog instead.
Choose your rail
| Rail | Host | Phase-1 header | Wallet | Asset | Native gas |
|---|---|---|---|---|---|
| Base (default) | x402.cryptorefills.com |
none, or X-Preferred-Network: base |
EVM, EIP-712 capable | USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, chain 8453 |
None — Cryptorefills relays |
| Solana | x402.cryptorefills.com |
X-Preferred-Network: solana |
Solana keypair | USDC SPL mint EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v |
None — CDP facilitator pays SOL |
| Solana (host-pinned) | solana.x402.cryptorefills.com |
omit, or solana only |
Solana keypair | same | None |
Default-rail recommendation. If your agent has wallets on both rails and no external constraint, use Base — broader EIP-712 tooling, longer payment window (~15 min vs Solana's ~60 s), and the same byte-identical contract that EVM-only agents have used since v1.0. Use Solana when the agent already runs there, when SOL avoidance matters, or when a registry / marketplace (e.g., pay-skills) demands a Solana-mainnet 402 challenge by default — in that case use the solana.x402.cryptorefills.com host so the rail is host-pinned and unambiguous.
More from cryptorefills/agents
cryptorefills-buy
Buy gift cards, top up phones, and get travel eSIMs with Bitcoin, Lightning, Ethereum, Solana, USDC, USDT, or 15+ other cryptos on Base, Polygon, Arbitrum, Tron, and more. No account or CLI install — MCP-native. 10,500+ brands, 180+ countries.
57cryptorefills-catalog
Search gift cards, mobile top-ups, and eSIMs purchasable with Bitcoin, Ethereum, Solana, USDC, USDT, and 15+ cryptos. 10,500+ brands across 180+ countries via MCP — browse by brand, country, or category in 10 languages. No account needed.
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