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-researchgit 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-research)<a href="https://agentmods.dev/skills/maksutovic/joycraft/joycraft-research"><img src="https://agentmods.dev/badge/skills/maksutovic/joycraft/joycraft-research/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-research"><img src="https://agentmods.dev/badge/skills/maksutovic/joycraft/joycraft-research.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 | $0.00031 | $0.02172 |
| Opus 5 | $0.00015 | $0.01086 |
| Sonnet 5 | $0.00006 | $0.00434 |
| Haiku 4.5 | $0.00003 | $0.00217 |
Grade A, and why
joycraft-research 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 — 183 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.
Research Codebase for a Feature
You are producing objective codebase research to inform a future spec or implementation. The key insight: the researching agent must never see the brief or ticket — only research questions. This prevents opinions from contaminating the facts.
Guard clause: If the user doesn't provide a brief path or inline description, ask: "What feature or change are you researching? Provide a brief path or describe it."
Step 0: Retrieve Before You Reason (PROTOCOL)
Before generating a single research question, run a bounded grep-first retrieval pass over the durable knowledge layer — a capped lookup, not a reading assignment:
- Derive 3-6 search terms from the brief's (or inline description's) key concepts.
- Grep, in priority order:
docs/context/decision-log.md,docs/context/shipped.md,docs/discoveries/, remainingdocs/context/*.md. - Read at most 5 files/rows total; if a term returns dozens of hits, read only the newest within the cap and say the result was truncated.
- Empty or missing knowledge layer (fresh project): report "nothing to retrieve" in one line and proceed — never block.
Output contract: the research document MUST include a "Prior knowledge reused" section — a list citing each reused doc + row date/heading, or the explicit line "retrieval ran (terms: …), nothing relevant found."
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 a4ab3eed85ae
- 9d ago First seen · 181 lines · 31 tokens per session scan A 08bae7c5fe74
joycraft-research is a skill published in the GitHub repository maksutovic/joycraft (15 stars, last pushed yesterday), licensed MIT. It adds 31 tokens to every session and 2,172 once invoked, about $0.0002 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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