Od Media Generation Agent Skill
Default reference pipeline for image, video, and audio projects — routes through media-image / media-video / media-audio atoms based on the project kind, wraps the output in a live artifact, and devloops on critique-theater until the score converges.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/nexu-io/open-design --skill od-media-generationWhat comes with it
8 248 bytes besides the instructionThe instruction itself
5 sections, as written by the authorod-media-generation (scenario)
This scenario plugin is the bundled default for projects whose
metadata.kind is image, video, or audio. The web client and the
daemon both look up defaultScenarioPluginIdForKind(kind) from
@open-design/contracts and, when no other plugin is applied, bind
this scenario at project / run creation time.
Default pipeline
{
"stages": [
{ "id": "discovery", "atoms": ["discovery-question-form"] },
{ "id": "plan", "atoms": ["todo-write"] },
{ "id": "generate", "atoms": ["media-image", "media-video", "media-audio", "live-artifact"] },
{
"id": "critique", "atoms": ["critique-theater"],
"repeat": true,
"until": "critique.score>=4 || iterations>=3"
}
]
}
The generate stage lists all three media atoms even though a single
run only calls one of them. Picking the right atom is the agent's job:
metadata.kind === 'image'→media-imagemetadata.kind === 'video'→media-videometadata.kind === 'audio'→media-audio
If the user picks this plugin manually without a media-typed project,
prefer media-image and explain the assumption in the first reply.
Atom call shape
Every media atom takes the same kernel of inputs and returns a media
artifact reference that live-artifact can wrap:
prompt— the rendereduseCase.queryafter input substitution.aspect— one of1:1/16:9/9:16/4:3/3:4. Default
16:9. The contracts MediaAspect union enumerates the legal
values.
provider— left blank by default so the daemon picks the user's
configured provider for this media kind (see Settings → Media). Only
set this when the user names a provider explicitly.
After the media atom returns:
- Save the binary into
<cwd>/media/<timestamp>.<ext>. - Call
live-artifactto register a preview surface pointing at the
saved file. The preview is what the user sees in the right pane.
Critique loop
critique-theater reads the artifact, scores it across the standard
five dimensions, and emits a critique.score signal. The until
clause stops the loop at score ≥ 4 or three iterations, whichever
comes first. Use the critique notes to drive the next media call's
prompt, not to re-pick the media atom.
Replace, do not extend
Enterprise editions that need a different default for media work
should ship a sibling scenario plugin and add the right mapping in
@open-design/contracts/scenario-defaults, not patch this manifest.
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How to use it
Take nexu-io/od-media-generation from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.