Decision procedure for agents buying media generation pay-per-request: when to pay an image, video, or audio generation

Decision procedure for agents buying media generation pay-per-request: when to pay an image, video, or audio generation API versus free tiers or self-hosted open models. Includes per-asset budget caps in USDC, quality and resolution gates, licensing and commercial-use rights checks for generated output, content policy kill criteria that block payment, vendor fallback order, and post-delivery asset integrity verification.