Causeway Services
How an x402 payment works, step by step: one request, one payment neighborhood
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How an x402 payment works, step by step: one request, one payment
A single x402 payment in five steps: the 402 response, the signed EIP-3009 authorization, facilitator verify and settle, and the receipt. Version 2 headers.
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Causeway Services: x402 guides, a market where software pays, books, news and games
Causeway Services runs an x402 market of 130 offers payable in USDC over HTTP 402, and publishes guides, books, Koios News and games. Start here.