image-poster
Single-image generation skill for posters, key art, and editorial illustrations. Defaults to gpt-image-2 but is provider-agnostic — the same workflow drives Flux, Imagen, or Midjourney via the active upstream tooling. Output is one or more PNG/JPEG files saved to the project folder.
Profile →npx skills add nexu-io/open-design --skill image-poster --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Image Poster Skill Produce **one** finished image asset per turn unless the user asks for variations. Image generation rewards a tight, structured prompt — your job is to assemble that prompt from the user's brief, then dispatch. ## Resource map ``` image-poster/ ├── SKILL.md ← you're reading this └── example.html ← what the resulting card looks like in Examples ``` ## Workflow ### Step 0 — Read the project metadata The active project carries `imageModel`, `imageAspect`, and (optional) `imageStyle` notes. Use them as the upstream model + canvas + style anchor. When a value is not provided, infer a safe default from the brief and media contract. Ask only when the choice would materially change the requested result and no safe default can be inferred. ### Step 1 — Compose the prompt Plan in this exact order before calling any tool: 1. **Subject + composition** — what is in the frame, where, at what scale; eye-line and crop. 2. **Lighting + mood** — natural / studio / moody; warm / cool; key plus rim plus fill; time of day if outdoor. 3. **Palette + textures** — hex anchors when the user gave a brand palette; otherwise a 3-word mood tag (e.g. "muted ochre + ink"). 4. **Camera / lens
- Resource map
- Workflow
- Step 0 — Read the project metadata
- Step 1 — Compose the prompt
- Step 2 — Dispatch via the media contract
- Step 3 — Hand off
- Hard rules
What does the image-poster skill do?
Single-image generation skill for posters, key art, and editorial illustrations. Defaults to gpt-image-2 but is provider-agnostic — the same workflow drives Flux, Imagen, or Midjourney via the active upstream tooling. Output is one or more PNG/JPEG files saved to the project folder.
How do I install it?
Run `npx skills add nexu-io/open-design --skill image-poster --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From nexu-io/open-design, a repository with 83,577 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.