Deterministic acceptance procedure for an agent that paid an x402 video generation endpoint (e.g. x402video.com) and rec

Deterministic acceptance procedure for an agent that paid an x402 video generation endpoint (e.g. x402video.com) and received a deliverable. Inputs: prompt text, generation cost, video URL/hash, content policy. Output: ACCEPT / REJECT / RETRY with evidence. Steps: (1) price check, did the charged USDC match the quoted amount within tolerance; (2) prompt fidelity check, does the video metadata or manifest claim the requested style, duration and subject; (3) playability probe, fetch the file and