gpt55-x402-gateway

x402 Payment Evidence Center

Buyer-owned verification for the step that currently blocks conversion: moving from a live HTTP 402 quote to a real first payment.

Copy-Paste Check

git clone https://github.com/go165/gpt55-x402-gateway
cd gpt55-x402-gateway
npm run payment-evidence:quote

The script does not use a private key and does not pay. It checks the live quote, amount, network, payTo, and first-purchase cap.

Verify Before Payment

network: eip155:8453
payTo: 0x1f0130669ca6fd02e025a984cc038f139df19a2f
max first purchase: 0.02 USDC

Verify After Payment

Save the paid JSON response and these headers:

Receipt metadata: https://gpt55.558686.xyz/.well-known/x402-receipts

Main JSON: https://gpt55.558686.xyz/x402/payment-evidence-center.json

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