Zambo guide
x402: plain-language guide
x402 is an HTTP payment flow where a server answers 402 Payment Required and the client pays, often in USDC, then retries.
Add Zambo to your AIDefinition
x402 is an HTTP payment flow where a server answers 402 Payment Required and the client pays, often in USDC, then retries.
Check the current request terms and wallet response before proceeding. Payment, tool execution and the saved work receipt are distinct records.
Example from a live receipt
The payment challenge describes the request and the amount due. A separate work receipt records the tool call and its returned status; it should not be treated as a wallet settlement confirmation.
Open the saved call at the receipt checker to inspect its recorded fields.
Related terms
Related terms. For x402 definition, use this section to answer the named question with the relevant source or call record.
Check the live challenge for amount, asset, network and recipient before approving. Payment and tool execution are separate events.
Try this prompt
Start with a small request. Change the details to match your task.
Use Zambo to explain the payment step before it happens, then show the receipt for the completed request.
Live example
This is a public record from the production site. Review the record itself; it does not establish that the work was correct.
Open a live receipt exampleFAQ
What is x402 definition?
x402 is an HTTP payment flow where a server answers 402 Payment Required and the client pays, often in USDC, then retries.
What does a Zambo receipt show?
It shows the saved record and its available status. It does not prove that the output is correct or complete.
How do I try this with Zambo?
Check the payment request in your wallet, approve only a request you intend to pay, then review the resulting receipt.
Try it with your AI
Connect Zambo once, then ask your AI to use it for a real task.
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