Generate Grok Imagine clips from an agent with the generate_video tool

Yes, an agent can make Grok Imagine clips on Sume through hosted MCP: the paid tool is generate_video, which replaced the retired alias video-router_create. The Grok row, grok-imagine-video-1.5, is image-to-video only, so the call must carry a first frame, and the tool's own contract is the thing to read before you guess any field. Ask for it with tools_schema and the tool name.

The order an agent should follow

The MCP docs split tools into discovery, free reads and paid writes. tools_list, tools_schema and mcp_health are for discovery. generate_video is in the paid group with generate_image and music_create, and a paid write carries an idempotency_key, so a retried call does not make a second job.

An instruction to paste

Give the agent the constraints in its instruction, since the schema cannot say which model is right for the job:

Make one 6-second clip with model grok-imagine-video-1.5.
It is image-to-video only: use the supplied still as the first frame.
Resolution is 480p or 720p, duration 4 to 15 seconds.
First call tools_schema for generate_video and follow it exactly.
Send an idempotency_key. If the call fails, retry with the same key.
Wait on the job id; do not submit a second job.

Cost and limits

Cost is the same as over HTTP: provider list times 1.25, ceiled to the cent per job. At $0.0125 a second, 6 seconds is $0.075, billed as $0.08. xAI's models page also lists a Lite video model, which is not in Sume's documented catalog.