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 ChenShuo2004/cs-skills --skill cs-writergit clone --depth 1 https://github.com/ChenShuo2004/cs-skillsWrote 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/chenshuo2004/cs-skills/cs-writer)<a href="https://agentmods.dev/skills/chenshuo2004/cs-skills/cs-writer"><img src="https://agentmods.dev/badge/skills/chenshuo2004/cs-skills/cs-writer/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/chenshuo2004/cs-skills/cs-writer"><img src="https://agentmods.dev/badge/skills/chenshuo2004/cs-skills/cs-writer.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 | $0.00139 | $0.01241 |
| Opus 5 | $0.00069 | $0.00620 |
| Sonnet 5 | $0.00028 | $0.00248 |
| Haiku 4.5 | $0.00014 | $0.00124 |
Grade A, and why
cs-writer 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 10d 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 — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CS Writer
Purpose
cs-writer is ChenShuo's integrated writing skill. It turns real project material, tool experiments, product decisions, and rough ideas into writing that is specific, honest, warm, and useful.
The voice is a practical builder talking honestly about something that was interesting enough to test, build, or rethink.
Input Contract
Before drafting, identify what is available:
- Source material: notes, transcripts, links, screenshots, documents, product records, or rough ideas.
- Audience: who should read this and what they already know.
- Outcome: article, outline, angle options, rewrite, polish, public account draft, or short content.
- Constraints: length, platform, language, tone, evidence, links, and publishing format.
Do not ask for information that can be inferred from the material. Ask only for facts that affect truth, audience fit, or the requested output. If the material is thin, identify the missing real details: what happened, what was tried, what failed, what changed, and what the reader should be able to do afterward.
Mode Selection
Choose one mode before writing:
- Angle: propose 2-3 concrete angles and recommend one.
- Outline: create the article spine, section purpose, and evidence needed.
- Draft: write the complete piece from the supplied material.
- Rewrite: preserve the user's meaning while improving structure, rhythm, clarity, and usefulness.
- Polish: make a near-final draft more natural without changing its claims or personality.
- Review: diagnose truth, usefulness, specificity, rhythm, and voice, then give targeted edits.
Angle Check
Use HVC before drafting:
- Happy: Is there a real curiosity, surprise, tension, or enjoyable discovery?
- Value: Will the reader learn something, save time, or make a better decision?
- Concrete: Do we have scenes, tools, numbers, screenshots, prompts, code, or before/after results?
What ships with it
2 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.
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.
- 10d ago First seen · 105 lines · 139 tokens per session scan A aba9a9db98cb
cs-writer is a skill published in the GitHub repository ChenShuo2004/cs-skills (141 stars, last pushed 6d ago), licensed MIT. It adds 139 tokens to every session and 1,241 once invoked, about $0.0007 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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