grok-media
xAI Grok image and video generation guide covering authentication, endpoints, prompt structure, image editing, reference-image video, and async polling.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/calesthio/openmontage --skill grok-media- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads grok-media automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Grok Media
Use this skill when working with xAI media models in OpenMontage.
Models
grok-imagine-imagefor image generation and image editinggrok-imagine-videofor text-to-video, image-to-video, and reference-image video
Authentication
- Env var:
XAI_API_KEY - Base URL:
https://api.x.ai/v1 - Header:
Authorization: Bearer $XAI_API_KEY
Image API
Text-to-image
- Endpoint:
POST /images/generations - Core fields:
modelpromptnaspect_ratioresolution
Image edit
- Endpoint:
POST /images/edits - Use
imagefor one source image - Use
imagesfor multi-image compositing - Each source image can be:
- a public HTTPS URL
- a base64 data URI
Image prompting
- Grok responds well to direct natural language
- For edits, describe only the intended change and preserve everything else implicitly
- For multi-image merges, explicitly name how each source contributes
- Prefer one strong scene description over long style-stacking
Video API
Generation
- Endpoint:
POST /videos/generations - Polling endpoint:
GET /videos/{request_id} - Success state:
status == "done" - Failure states to handle explicitly:
failed,expired
Modes
- Text-to-video:
- prompt-only generation
- Image-to-video:
- use
image: {"url": ...} - this anchors the starting frame
- use
- Reference-to-video:
- use
reference_images: [{"url": ...}, ...] - this influences who/what appears in the video without locking the first frame
- prompts can reference inputs with placeholders like
<IMAGE_1>,<IMAGE_2>
- use
Video constraints
- Grok video is best treated as short-form generation
- Current output resolutions are
480pand720p - Reference-image video supports multiple images and is useful for product placement, wardrobe transfer, and identity consistency
- Download outputs promptly; provider URLs may be temporary
Pricing
grok-imagine-image:$0.02per generated imagegrok-imagine-imageedits/composites: add$0.002per input imagegrok-imagine-video:480p:$0.05per second720p:$0.07per second
grok-imagine-videoimage-conditioned requests: add$0.002per input image
Grok-Specific Prompt Guidance
Images
- Start with subject, action, setting
- Add one style anchor, not five
- For edits:
- describe the desired modification
- keep the rest of the image stable by omission, not by writing a giant preservation list
Video
- Keep prompts scene-local: one shot, one main motion idea, one emotional beat
- For reference-conditioned video, explicitly map source images to roles:
- person from
<IMAGE_1> - jacket from
<IMAGE_2> - product from
<IMAGE_3>
- person from
- Camera and pacing language helps:
- slow push-in
- handheld follow
- locked-off medium shot
- high-energy whip pan transition
Good Fits
- Image style transfer
- Image compositing from multiple sources
- Reference-conditioned short video
- Product-led motion clips
- Character-consistent scenes without hard first-frame lock
Weak Fits
- Long-form clip generation
- Heavy reliance on deterministic seeds
- Overloaded prompts with multiple scene changes
Failure Handling
- If generation submission succeeds but polling expires, surface it as a provider/runtime issue
- If a request fails, preserve the endpoint, mode, and prompt summary in the error
- Do not silently substitute a different provider after xAI was selected without user approval
FAQ
What does the grok-media skill do?
xAI Grok image and video generation guide covering authentication, endpoints, prompt structure, image editing, reference-image video, and async polling.
How do I install grok-media?
Run npx skills add https://github.com/calesthio/openmontage --skill grok-media in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/grok-media/ (personal) or .claude/skills/grok-media/ (project).
Which AI agents can use grok-media?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is grok-media safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains grok-media?
It is published by calesthio in calesthio/openmontage. It has 1,068 recorded installs.
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