Run a paid release gate and get proof
answer_duelPaid one-tool x402 flow. Compare two candidate answers against explicit requirements for $0.01 USDC on Base. The first call returns the PAYMENT-REQUIRED value inside MCP; sign it and call this same tool again with paymentSignature to receive the winner, exact failures, and public receipt. Candidate text is not stored.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| task | Yes | ||
| duelId | Yes | Caller-generated id used for the public receipt URL. | |
| candidateA | Yes | ||
| candidateB | Yes | ||
| requirements | No | ||
| paymentSignature | No | Optional x402 v2 PAYMENT-SIGNATURE. Omit on the first call; provide the signed value on the second call. |