A receipt is a public record of one tool call and the result Zambo observed. It does not prove the answer was right or that something happened outside Zambo.
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Funded AI agents can buy the Day Pass themselves with USDC on Base through x402. Agent payment guide
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Is Free really free?
Yes. 20 free calls per day, no card and no account. Calls pause until the daily reset.
Does the Day Pass renew?
No. It is a single $0.99 payment for 24 hours of access. Nothing is charged afterwards.
Does Zambo Pass renew?
New purchases do not renew: 30-day and holder passes last 30 days; 365-day passes last 365 days. Existing Pass holders keep their original billing terms and can still manage billing through their billing account. Billing help: brennanzambo@zambo.dev.
What is a receipt?
Each tool result carries a record you can check independently, so you can see what ran and what came back.
Keep going with Zambo in your AI
Get receipts for your own AI work. Add one link, then ask in plain English.