x402 Payments (Hedera)

Pay-per-use pattern: store protected bytes off-chain, record access terms separately (on-chain or config), gate HTTP resources with HTTP 402 + a self-hosted Hedera facilitator that verifies and settles native HBAR transfers.

Buyer → GET protected resource
          ├─ free / public → resource
          └─ paid → 402 PAYMENT-REQUIRED
                → client signs HBAR transfer
                → retry with PAYMENT-SIGNATURE
                → resource server verify + settle via facilitator
                → PAYMENT-RESPONSE + resource

The resource server never holds facilitator keys. Settlement uses a funded ECDSA fee-payer account on the facilitator process.

Quick Reference