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-session-endgit 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-session-end)<a href="https://agentmods.dev/skills/maksutovic/joycraft/joycraft-session-end"><img src="https://agentmods.dev/badge/skills/maksutovic/joycraft/joycraft-session-end/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-session-end"><img src="https://agentmods.dev/badge/skills/maksutovic/joycraft/joycraft-session-end.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 110 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00021 | $0.02718 |
| Opus 5.5 | $0.00008 | $0.01087 |
| Sonnet 5.5 | $0.00004 | $0.00544 |
| Haiku 4.5 | $0.00002 | $0.00272 |
Grade A, and why
joycraft-session-end 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 1mo 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 — 178 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.
Session Wrap-Up — Feature Finisher
This is the once-per-feature finisher — the heavy bookend that runs once, when the feature's specs are done, not after every spec. It is the only validation gate in the loop and the single place that pushes and opens the PR.
Two-tier wrap-up. The light per-spec step is
joycraft-spec-done(status bumptodo → in-review+ commit, no validation/push/PR — it runs after each spec). This skill is the heavy counterpart: full validation, consolidate the discovery stubs spec-done left behind, graduate everyin-reviewspec todone, push, and open the PR. Seedocs/reference/spec-status-lifecycle.mdfor thetodo → in-review → donelifecycle.
Complete these steps in order.
1. Consolidate Discoveries
Why: Discoveries are the surprises — things that weren't in the spec or that contradicted expectations. They prevent future sessions from hitting the same walls.
This is the consolidation pass: joycraft-spec-done may have left terse 2-line discovery stubs during the feature (one per surprising spec). Curate and expand those stubs into proper discovery docs now, and capture anything else surprising from the feature as a whole. If any stubs exist at docs/discoveries/, consolidate them (merge related ones, expand each into the full format below); then create or update a discovery file at docs/discoveries/YYYY-MM-DD-topic.md. Lazy-create the docs/discoveries/ directory if it doesn't exist.
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.
- 1mo ago Changed 139024fb7b2c
- 2mo ago Changed · +2 lines cbbe16935bcf
- 2mo ago Changed · -1 lines 64da17d75c2b
- 2mo ago First seen · 177 lines · 21 tokens per session scan A cf9fd4d514eb
joycraft-session-end is a skill published in the GitHub repository maksutovic/joycraft (15 stars, last pushed 3d ago), licensed MIT. It adds 21 tokens to every session and 2,718 once invoked, about $0.0001 per session on Opus 5.5. 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.
joycraft-session-end compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| joycraft-session-endmaksutovic/joycraft | Skill | 15 | 3d ago | MIT | A | 21 | Claude Code, Codex |
| NestJS FrameworkFortiumPartners/ensemble | Skill | 12 | 2d ago | MIT | A | 17 | Claude Code, Codex |
| using-prismaFortiumPartners/ensemble | Skill | 12 | 2d ago | MIT | A | 43 | Claude Code |
| dd-code-generationDataDog/pup | Skill | 1.0k | today | Apache-2.0 | A | 16 | Claude Code |
| adding-a-commandcaliber-ai-org/ai-setup | Skill | 1.3k | 1mo ago | MIT | A | 76 | Claude Code, Codex |
| scaffold-projectMarve10s/Better-Fullstack | Skill | 818 | today | MIT | A | 80 | Claude Code |
| add-to-projectMarve10s/Better-Fullstack | Skill | 818 | today | MIT | A | 71 | Claude Code |