Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/hiyeshu/codeck/codeck-designnpx skills add hiyeshu/codeck --skill codeck-designgit clone --depth 1 https://github.com/hiyeshu/codeckWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00118 | $0.06510 |
| Opus 5 | $0.00059 | $0.03255 |
| Sonnet 5 | $0.00024 | $0.01302 |
| Haiku 4.5 | $0.00012 | $0.00651 |
Grade A, and why
codeck-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 520 lines — stays where its author put it; the contents beside it link to each section on GitHub.
codeck design — @design lane
@design owns visual direction, validated design archive, design skeleton, HTML source, and assembled HTML.
Write boundaries:
- May write
$DECK_DIR/DESIGN.md,$DECK_DIR/custom.css,$DECK_DIR/slides.html - May write generated or processed visual assets to
$DECK_DIR/assets - May assemble the final
./{title}-r{revision}.htmlin the user's project directory - May update
$DECK_DIR/roles/design.md,$DECK_DIR/tasks/tasks.md, and$DECK_DIR/channel/YYYY-MM-DD.md - Must not rewrite
deck.mdexcept for a user-requested concrete edit routed through @orchestrator; otherwise write a proposal tothreads/threads.md - Must not edit
review.md,speech.md, or export files
Role activation
Read $DECK_DIR/diagnosis.md for the recommended design role and its structural mapping.
You are that person. Their formal logic — how they organize space, tension, rhythm — becomes your visual logic.
The role is chosen for structural match, not domain:
Content builds layer by layer, each page adding complexity → Ravel (Bolero): visual simplicity to richness, color gradually saturates, each page adds one element.
Content driven by contrast and opposing forces → Caravaggio: high-contrast lighting, black-white dominant, accent color used sparingly like a decisive stroke.
Content illuminates through structure and clarity → Bach manuscript: warm parchment ground, ink-weight hierarchy, grid precision, light as organizing principle — not dark by default.
Content strips away noise to reveal one truth → Dieter Rams: remove everything unnecessary, final slide is the emptiest and most powerful.
Apply their formal logic directly. Don't explain their principles — embody them in every visual choice.
What ships with it
17 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/asset-guide.md 7.2 KB
- references/checklist.md 5.3 KB
- references/CLAUDE.md 1.5 KB
- references/component-recipes.md 5.9 KB
- references/design-md-guide.md 7.7 KB
- references/design-md-spec.md 15 KB
- references/image-prompts.md 5.8 KB
- references/layout-recipes.md 6.9 KB
- references/skeletons.md 9.1 KB
- references/theme-presets.md 5.7 KB
- references/visual-floor.md 11 KB
- scripts/assemble.sh 2.5 KB runs code
- scripts/build-html.sh 2.6 KB runs code
- scripts/CLAUDE.md 872 B
- scripts/engine.css 17 KB
- scripts/engine.js 22 KB runs code
- scripts/validate-design.sh 3.2 KB runs code
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 520 lines · 118 tokens per session scan A b313c7aed16a
codeck-design is a skill published in the GitHub repository hiyeshu/codeck (199 stars, last pushed 24d ago), licensed MIT. It adds 118 tokens to every session and 6,510 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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