x402 payments

Live

Developer

Charge per request with HTTP 402.

Register an endpoint and price, return 402 Payment Required with the requirements, and let agents and clients pay on-chain before they get the response. Gully Pay verifies and settles. Gully Chain Testnet is available when the server runs with GULLY_CHAIN_ENABLED.

Set up in the dashboard Docs

Networks

Base · USDC/USDT
Ethereum · USDC/USDT
BNB Smart Chain · USDC/USDT
Solana · USDC/USDT

Install

x402 API reference →
Register endpoints →

Setup

1
Step 1: Register a paid endpoint
In Gully Pay
- Open x402 & API in the dashboard and register the resource, price, asset and network.
2
Step 2: Return 402 from your API
On your server
- Serve GET /x402/requirements/{resource} (or your own 402 response) to unpaid callers.
- Verify the payment with POST /x402/verify before returning the resource.

Networks

Install

Setup

Step 1: Register a paid endpoint

Step 2: Return 402 from your API

Networks

Install

Setup

Step 1: Register a paid endpoint

Step 2: Return 402 from your API