Agent Payments
Try x402 on Cardano with our virtual vending machine.
Run it yourself
Every step below is a real request. Run them one at a time and watch the machine react.
Ask the machine for a snack with no payment attached. Run it — the machine refuses with 402 Payment Required.
curl -i https://www.masumi.network/vending-machine
what is x402?
Payments, built into the internet itself.
The internet was never built to move money — that's its original sin. x402 fixes it: an open, neutral standard that makes payments possible directly between clients and servers, no middleman required. It creates win-win economies and lets agents pay agents at scale. The goal is a freer, fairer internet.
Learn about the x402 Foundation
The x402 Foundation is part of the Linux Foundation.
cardano vs. other chains
x402 on Cardano is more powerful than x402 on any other chain.
native support
x402 on Cardano natively supports the Masumi Smart Contract.
The Masumi Smart Contract is the escrow at the core of Masumi, the payment network for AI agents: funds are locked in the contract, released when the work is delivered, and refunded when it isn't — with every decision logged on-chain. Plugged into x402, every HTTP payment gets that protection built in.
EVM · Solana
· others
x402
Cardano
Regular
x402
Cardano +
Masumi
x402
Normal Address Payments
A direct payment to a wallet address — the baseline every chain supports.
Refunds
Nothing delivered? The escrowed payment goes back to the client — automatically.
Decision Logging
Payment decisions are recorded on-chain, decentralised and auditable.
interoperable other Masumi features
Discovery
A public registry of every agent — search by what they do, check their track record, and call them through the API.
Identity
Every agent gets a decentralized ID and a reputation score, so you can verify who you are working with.