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 VKirill/claude-lane-stack --skill writer-practicesgit clone --depth 1 https://github.com/VKirill/claude-lane-stackWrote 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/vkirill/claude-lane-stack/writer-practices)<a href="https://agentmods.dev/skills/vkirill/claude-lane-stack/writer-practices"><img src="https://agentmods.dev/badge/skills/vkirill/claude-lane-stack/writer-practices.svg" alt="Measured on agentmods" 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 Agent Snooping · line 43 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00052 | $0.00672 |
| Opus 5 | $0.00026 | $0.00336 |
| Sonnet 5 | $0.00010 | $0.00134 |
| Haiku 4.5 | $0.00005 | $0.00067 |
Grade A, and why
writer-practices 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 8d 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 — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Writer practices
Info (print and stop)
If $ARGUMENTS is info, or the user says info / справка / как запускать this skill:
print the block below verbatim (Russian), then stop. Do not edit product code.
writer-practices — стиль кода внутри owns_paths. Для writer, не PM.
Когда
- Идёт TASK_FILE, пишется продукт.
- Не для плана, не для docs-maintain, не для DESIGN.md.
Как открыть шпаргалку
- /lane-stack:writer-practices info
- каталог: /lane-stack:info
Правила
- Имена: verb+noun (fetchUser). Bool: is/has/can/should. Не tmp, не data2.
- Одна функция = одна работа. Early return. Хелпер на один вызов не выделять.
- Ошибки: сообщение + контекст. Пустой catch / return null — нельзя.
- Тест: одно поведение, контракт, не private internals.
- Нет drive-by format и «раз уж я здесь».
Важнее этого файла
- CLAUDE.md / AGENTS.md / .agents/LESSONS.md в PROJECT_CWD
- Каталог и *.test / *.spec как уже в репо
Не твоя работа
- wiki/README, review, CI/docker, commit/push/merge, всё вне owns_paths
For lane writers only. Karpathy (think → minimum → surgical → verify) still applies.
Source idea: aif-best-practices. Their factory, evolve, review, and docs skills are not ours.
Override
CLAUDE.md / AGENTS.md / .agents/LESSONS.md in PROJECT_CWD beat this card.
Match file names, casing, and *.test / *.spec already in the repo.
Do not create .agents/**, wiki, or README unless that path is in owns_paths.
Write
- Names: verb+noun (
fetchUser). Bool:is/has/can/should. Notmpordata2. - One function = one job. Early return. Do not extract a helper used once.
- Errors: specific message + context. Never empty
catch/return nullto hide a throw. - Tests: one behavior per test; assert the contract, not private internals.
- No drive-by format, comments, or "while I'm here" refactors.
Not your job
Docs/wiki refresh, PR review tone, CI/docker, commit/push/merge, anything outside owns_paths.
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.
- 8d ago First seen · 62 lines · 52 tokens per session scan A a0b96ec4767c
writer-practices is a skill published in the GitHub repository VKirill/claude-lane-stack (115 stars, last pushed 6d ago), licensed MIT. It adds 52 tokens to every session and 672 once invoked, about $0.0003 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
afc:release-notes
Generate release notes from git history.
afc:clean
Pipeline artifact cleanup and codebase hygiene.
afc:issue
Analyze GitHub issue — investigate bug reports, understand requirements, inspect issues.
afc:launch
Generate release artifacts — version bump, changelog, release tags.
afc:learner
Review and promote learned patterns to project rules.
afc:qa
Project quality audit — test confidence, error handling gaps, code health.