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 skills add maksutovic/joycraft --skill joycraft-designgit clone --depth 1 https://github.com/maksutovic/joycraftWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/maksutovic/joycraft/joycraft-design)<a href="https://agentmods.dev/skills/maksutovic/joycraft/joycraft-design"><img src="https://agentmods.dev/badge/skills/maksutovic/joycraft/joycraft-design/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/maksutovic/joycraft/joycraft-design"><img src="https://agentmods.dev/badge/skills/maksutovic/joycraft/joycraft-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What 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 5.1 | $0.00028 | $0.04478 |
| Opus 5 | $0.00014 | $0.02239 |
| Sonnet 5 | $0.00006 | $0.00896 |
| Haiku 4.5 | $0.00003 | $0.00448 |
Grade A, and why
joycraft-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 yesterday.
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 — 336 lines — stays where its author put it; the contents beside it link to each section on GitHub.
At skill entry, run node docs/.joycraft/check.mjs check --json --session <session-id> once, reusing JOYCRAFT_SESSION_ID if supplied or one ID chosen for this conversation. If the checker is missing or fails, continue the requested skill quietly without retrying setup. Offer updates only for display: true; current, postponed, off, and unknown stay quiet. If automaticUpdate is present, finish this skill, then run its exact command once from the project root: the candidate must verify every safety gate before applying. Other updates require approval. After an offer or automatic attempt, record it with node docs/.joycraft/check.mjs acknowledge <available-version> --session <session-id>. Apply updates only at this workflow boundary; after success, reinvoke the skill or restart the session to load changed instructions.
Design Discussion
You are producing a design discussion document for a feature. This sits between research and decomposition — it captures your understanding so the human can catch wrong assumptions before specs are written.
Guard clause: If no brief path is provided and no brief exists at docs/features/<slug>/brief.md, say:
"No feature brief found. Run $joycraft-new-feature first to create one, or provide the path to your brief."
Then stop.
Step 0: Retrieve Before You Reason (PROTOCOL)
Before exploring the codebase or writing anything, run a bounded grep-first retrieval pass over the durable knowledge layer. This is not optional and it is not open-ended — it is a capped lookup, not a reading assignment.
- Derive 3-6 search terms from the brief's (and research doc's, if present) nouns and verbs — the feature's key concepts, not generic words.
- Grep the knowledge layer for those terms, in priority order:
docs/context/decision-log.md(why past choices were made)docs/context/shipped.md(what/where already exists)docs/discoveries/(negative knowledge — things that didn't work)- remaining
docs/context/*.mdfiles
- Read at most 5 files/rows total — the matches, not the surrounding context. If a grep term returns dozens of hits, read only the newest matches within the cap and say the result was truncated.
- If the knowledge layer is empty or missing (fresh project), report "nothing to retrieve" in one line and proceed — never block.
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.
- yesterday Changed · +2 lines dd6931eefdd5
- 9d ago First seen · 334 lines · 28 tokens per session scan A eacfdd6285c7
joycraft-design is a skill published in the GitHub repository maksutovic/joycraft (15 stars, last pushed yesterday), licensed MIT. It adds 28 tokens to every session and 4,478 once invoked, about $0.0001 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.
Other skills, from other repositories
PR Etiquette
This skill should be used when responding to maintainer review feedback, writing or reviewing PR descriptions, following up on dormant PRs, validating PR quality before submission, or deciding how to communicate with maintainers. Sibling to oss-contribution and contribution-ethics.
cn-check
Install and run the Continue CLI (cn) to execute AI agent checks on local code changes. Use when asked to "run checks", "lint with AI", "review my changes with cn", or set up Continue CI locally.
rework-rate
Measure and interpret PR rework rate — the emerging 5th DORA metric.
review
Validate plans, execution, or PRs against wish criteria — returns SHIP / FIX-FIRST / BLOCKED with severity-tagged gaps.
review
Adversarial fresh-context review of an increment before it ships. Every finding cites path:line and is re-verified. Use when saying "review", "grill this", or "critique the implementation".
github-commenting
How to post clean, rich, deduplicated GitHub PR review comments — suggestion blocks, multi-line anchors, markers, formatting rules. Load before posting or fixing any PR comment.