Validate a Movie definition (and optional webhook) WITHOUT starting a render or consuming any credits, and return the estimated credit cost. Use this to preview cost and catch errors before calling render. estimatedCredits equals the credits render would reserve for the same body. Invalid Movies or SSRF-rejected webhook URLs are returned as errors (HTTP 400) from the API. Authentication and watermarking are set by the VIDHOOK_API_KEY environment variable only (never a tool argument): vh_test_… renders a free/watermarked draft, vh_live_… renders clean/paid. The target environment is selected independently by VIDHOOK_API_BASE_URL (base URL), not by the key type.

Submit a Movie definition (and optional webhook) and start an asynchronous render. Reserves credits and returns renderId, bucketName, and reservedCredits. Poll progress with get_status using the returned renderId and bucketName. All asset references must be URLs (vidhook does not generate assets). Insufficient credits return an error (HTTP 402). Authentication and watermarking are set by the VIDHOOK_API_KEY environment variable only (never a tool argument): vh_test_… renders a free/watermarked draft, vh_live_… renders clean/paid. The target environment is selected independently by VIDHOOK_API_BASE_URL (base URL), not by the key type.

Poll the progress of a render started with the render tool. When done is true and fatalErrorEncountered is false, outputFile holds the result video URL. Pass the renderId and bucketName returned by render.