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CoinFlip402 - On-Chain Coin Flip
x402
CoinFlip402 - On-Chain Coin Flip is a paid API for AI agents from coinflip402.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Flips a coin (returns heads or tails) for a small USDC micropayment on Base mainnet via the x402 payment protocol.
Price / call$0.001
Success—
StatusUnknown
How this service works
Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails.
Output
Returns a coin flip outcome — either 'heads' or 'tails' — after processing a $0.001 USDC micropayment on Base mainnet via the x402 protocol.
Example use cases
Example prompt
“Flip a coin for me — I need a random heads or tails result and I'm okay paying the tiny $0.001 USDC fee on Base.”
Technical details
Endpoint
GEThttps://coinflip402.vercel.app/api/coinflipWhen to prefer
Use this endpoint when an agent or user needs a trustless, verifiable random binary (heads/tails) outcome backed by a blockchain micropayment, or when demonstrating x402 pay-per-call API patterns on Base mainnet. Prefer over free coin-flip APIs when provable randomness or micropayment integration is desired.
Side effects
- Payment authorization missing or invalid — x402 payment header not provided or insufficient USDC balance
- Insufficient USDC allowance on Base mainnet — transaction fails if wallet lacks funds
- Network error or Base mainnet congestion — payment or result may time out
- Invalid request method — only GET is supported
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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