Agent payments

Let AI agents pay your BlankFX payment links with stablecoins, using the open x402 standard.

Agent payments

Software agents now buy things: data, compute, API calls, services. BlankFX lets them pay the same payment links your human customers use, with no checkout page and no account.

Agent payments use x402, an open standard that turns an ordinary web request into a payment. The agent asks for your payment link, the link answers “payment required” with the price, the agent signs a payment from its own wallet, and the link answers “paid”.

Agent payments are in sandbox. They run on Sepolia (testnet) with test tokens and no real money. Ethereum (mainnet) is not available yet.

How it works for you as a merchant

1. You switch on Agent payments in your BlankFX settings. It is off until you do.
2. You create a payment link as usual, then copy its Agent link (Payments → Status) and give it to your agent.
3. The agent pays that link. The money goes directly from the agent’s wallet to your payout wallet. BlankFX never holds it.
4. The payment is marked paid, your webhook fires as usual (payment_link.paid), and Payment Status shows it as an Agent payment.

Your payout wallet stays in your own custody. BlankFX only pays the network fee to submit the transaction and records the result.

Agent payments are not a marketplace and do not make your links discoverable. An agent can only pay a link you give it. The Agent link is the address the agent calls; it is different from the page link people open.

What the agent pays

The agent pays the invoice amount plus the normal BlankFX transfer fee, on top. You receive the full invoice amount. This is the same fee a person pays on a payment link, and there is no extra “agent fee”.

Safety and review

• Same compliance as people. An agent’s wallet goes through the same access checks and daily limits as a human payer. A suspended or unverified-over-limit wallet is refused before any money moves.
• One invoice, one payment. An invoice is reserved while a payment settles, so it cannot be paid twice, edited or cancelled mid-payment.
• You see who paid. The paying wallet address is shown to you in Payment Status. It is never shown to anyone else.
• Kill switch. BlankFX can switch agent payments off platform-wide at any time. New agent payments stop immediately.
• Suspicious cases go to review. If a payment cannot be matched with certainty, the invoice is held for manual review rather than being credited automatically.

For the developer building the agent

See Paying a payment link with x402 for the request flow, the one-time wallet setup and a working code sample.