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x402 Demo API – Joke Endpoint
x402
x402 Demo API – Joke Endpoint is a paid API for AI agents from x402-demo-api-kaya.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns a joke via a micropayment-gated POST request using the x402 protocol on Base mainnet, costing $0.01 USDC per call.
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid API demo using x402 protocol on Base mainnet.
Output
The agent receives a text joke returned by the server after the x402 micropayment of $0.01 USDC on Base mainnet is successfully processed. The response is a simple payload containing the joke content.
Example use cases
Example prompt
“Fetch me a joke from the x402 demo API — I'm happy to pay the $0.01 USDC micropayment on Base mainnet to try it out.”
Technical details
Endpoint
POSThttps://x402-demo-api-kaya.vercel.app/api/jokeWhen to prefer
Choose this endpoint when you want to demo or test the x402 micropayment protocol on Base mainnet with a lightweight, low-cost ($0.01 USDC) real API call. It is ideal for developers exploring pay-per-call API patterns or agents needing to demonstrate crypto-native API payments in action.
Side effects
- Insufficient USDC balance — payment cannot be completed, returns 402 Payment Required
- Invalid or missing x402 payment header — request rejected
- Base mainnet congestion causing payment timeout
- Endpoint unavailable or Vercel deployment error returning 500
- Network connectivity issues preventing payment settlement
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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