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grok-media

Create and edit images or generate short videos with xAI Grok. The skill explains how to write prompts, combine source images, assign reference images to video roles, and check generation progress before downloading results.

OriginalShow the original description

xAI Grok image and video generation guide covering authentication, endpoints, prompt structure, image editing, reference-image video, and async polling.

calesthio/OpenMontage

Run score Not tested

See how to install

Good for

  • Change an image's style or selected details
  • Combine multiple source images
  • Create a short product video from reference images
  • Use character references without fixing the opening frame

Overview

What it does

This skill brings together procedures for creating images and short videos with xAI Grok. It covers image generation, editing, and combining multiple images with grok-imagine-image, plus generating videos from text or images with grok-imagine-video. It explains how to assign each reference image a role, such as a person, outfit, or product, and how to repeatedly check generation status until the result can be retrieved.

When it helps

Use it to change part of an image, combine several source materials, or make a short video featuring a product or character. It also explains the difference between an image input that fixes the starting frame and reference image inputs that specify who or what appears in the video.

Example requests

  • “Change the style of this image.”
  • “Make a short video using the person in the first image and the jacket in the second.”
  • “Create a video of this product with the camera slowly moving closer.”

Notes

The skill assumes you are using xAI models in OpenMontage and requires XAI_API_KEY. API charges depend on the amount generated and the input images. The listed video resolutions are 480p and 720p; long videos are outside its preferred uses. Output URLs may be temporary, so download results promptly.

This overview was written by AI (OpenAI Codex) from the public SKILL.md. Check the original below for the exact behavior.

Document check

AI checked the SKILL.md for operations that need care and for setup requirements. The score comes only from actually running the skill (hands-on test).

SafetyAre sending data, deleting files, and running commands disclosed?
BPartly lackingIt identifies image submission endpoints and charges, but provides no procedure to prevent API key logging.
Easy setupDoes it need few tools or API keys, and are they documented?
BPartly lackingIt assumes OpenMontage and XAI_API_KEY, but gives no installation or key acquisition instructions.

Not counted in the score. Rated by AI (OpenAI Codex) as of Oct 23, 2026. Treat it as a guide and read the original before installing.

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Files included (1)

  • SKILL.md3.7 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Grok Media

Use this skill when working with xAI media models in OpenMontage.

Models

  • grok-imagine-image for image generation and image editing
  • grok-imagine-video for 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:
    • model
    • prompt
    • n
    • aspect_ratio
    • resolution

Image edit

  • Endpoint: POST /images/edits
  • Use image for one source image
  • Use images for 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
  • 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>

Video constraints

  • Grok video is best treated as short-form generation
  • Current output resolutions are 480p and 720p
  • 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: $0.02 per generated image
  • grok-imagine-image edits/composites: add $0.002 per input image
  • grok-imagine-video:
    • 480p: $0.05 per second
    • 720p: $0.07 per second
  • grok-imagine-video image-conditioned requests: add $0.002 per 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>
  • 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

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