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Build with x402 · Boson Protocol
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Build with x402

x402b extends the x402 standard with non-custodial escrow on the Boson Diamond. A buyer requests a resource, gets a 402 Payment Required with a Boson escrow option, signs a meta-transaction, and a facilitator settles it on-chain.

Pages

  1. HTTP-402 + escrow concept — the model and why it exists.
  2. Buyer side (x402-client) — making paid requests from a client.
  3. Seller side (x402-server) — protecting an HTTP resource.
  4. Facilitator (x402-facilitator) — running the relayer.
  5. Fulfillment channels — delivering the goods after payment.
  6. Token-auth strategies — ERC-3009, EIP-2612, Permit2, plain approve.
  7. State-machine integration — advancing the exchange in nextActions.

Quickstart

If you want to skip the reading and try it: Quickstart → Accept x402 escrow payments.