01
GET /resource
Client requests a paid API endpoint
02
402 Payment Required
Server returns price, accepted schemes
03
X-PAYMENT: <signed>
Client signs payment, re-sends request
04
200 OK
Server verifies, settles, returns content
GET /api/premium-image

A premium AI-generated image behind an HTTP 402 paywall. Pay to unlock the content.

$— USDC per request
Choose Payment Scheme
Direct Payment exact

Pay directly from your wallet on any supported chain.

Requires USDC in your wallet One signature, no setup needed Standard x402 compatible
GRID ID Vault intent

Pay from a pre-funded vault. Deposit once, pay anywhere.

Deposit once, use across all chains Zero gas per payment x402plus cross-chain extension

HTTP Exchange Log

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