chalk-logic
Create Chalk Logic concept-led chalkboard illustrations from briefs. Use for sparse wordless chalkboard explanations, non-diagram editorial chalk compositions, or prompt-only Chalk Logic recipes.
npx skills add CaliCastle/skills --skill chalk-logic --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.
# Chalk Logic Turn one idea into one quiet white-chalk proposition on an even green board. Render by default when image generation and inspection are available; otherwise return the compiled prompt and recipe. ## Visual contract Treat every bullet as both a generation rule and a QA gate: - **One proposition:** communicate one process, relationship, structure, cycle, accumulation, attenuation, or observational premise. Give it one unmistakable reading path. - **Quiet field:** keep roughly 65%-75% of the board empty. Raise this to 76%-86% for a single sparse sequence or observational vignette. Preserve generous outer margins and a compact concept-bearing motif. - **Even board:** fill the canvas edge to edge with a flat, dry, desaturated schoolroom-green board. Use microscopic matte grain that stays quiet at thumbnail size. The frame contains only the board and the concept-bearing chalk motif. - **Mineral hand:** draw only with warm-white mineral chalk. Use three restrained contrast levels: faint construction or context, readable structure, and very few brighter contacts. Show pressure variation, slightly broken stroke edges, occasional double strokes, and tiny deposits. - **Coherent
- Visual contract
- Formats
- Composition families
- Steps
- 1. Lock the brief
- 2. Distill the reading path
- 3. Anchor the quality
- 4. Declare the recipe
- 5. Compile the image prompt
- 6. Generate one candidate
- 7. Inspect and repair
- 8. Deliver
- Output shape
What does the chalk-logic skill do?
Create Chalk Logic concept-led chalkboard illustrations from briefs. Use for sparse wordless chalkboard explanations, non-diagram editorial chalk compositions, or prompt-only Chalk Logic recipes.
How do I install it?
Run `npx skills add CaliCastle/skills --skill chalk-logic --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 CaliCastle/skills, a repository with 84 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.