Vauban Pay

A Vauban Pay receipt is checked by anyone, without trusting us.

Vauban Pay lets an agent pay over HTTP 402, with the x402 headers, on Starknet, Base and Ethereum. Starknet is the reference implementation; Base and Ethereum are also served.

Start here

Quickstart: pay from an agent, free on Base Sepolia, then with real funds.

Check any receipt on the explorer: it shows what is proven, and what is not yet.

Cards and private payments are on request: contact us.