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 byerlikaya/claude-starter-kit --skill docs-writergit clone --depth 1 https://github.com/byerlikaya/claude-starter-kitWrote 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/byerlikaya/claude-starter-kit/docs-writer)<a href="https://agentmods.dev/skills/byerlikaya/claude-starter-kit/docs-writer"><img src="https://agentmods.dev/badge/skills/byerlikaya/claude-starter-kit/docs-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/byerlikaya/claude-starter-kit/docs-writer"><img src="https://agentmods.dev/badge/skills/byerlikaya/claude-starter-kit/docs-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00036 | $0.00724 |
| Opus 5.5 | $0.00014 | $0.00290 |
| Sonnet 5.5 | $0.00007 | $0.00145 |
| Haiku 4.5 | $0.00004 | $0.00072 |
Grade A, and why
docs-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 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 — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Documentation
Trigger phrases: "documentation", "docs", "update README", "API docs", "write docs", "document it", "write usage"
Goal: the docs must match the code. Wrong/stale docs are worse than no docs (they inspire trust and mislead). Trigger: when a public API, command, configuration, or user-visible behavior changes.
When it is mandatory
- A public function/endpoint/CLI signature or behavior changed.
- A new feature, configuration key, or environment variable was added.
- The install/run steps changed.
- A breaking change was made (also coordinate via
release/CHANGELOG).
Checklist
- Docs are up to date for the changed public surface
- Examples work (copy-paste tested / mentally traced)
- Dead/misleading wording removed (no leftover old name/parameter)
- New configuration/env documented (default + whether required)
- Scope minimal — not a repetition of the code, but "why/how to use it"
- No secret/real credential in the docs (use a placeholder)
How
- Identify the changed surface — extract the public signature/behavior diff from the diff.
- Find the right doc — README,
docs/, docstring, OpenAPI, command--help. If there is more than one, update them all. - Write: what it does · how it is called (example) · input/output · limits/error cases. Short and correct.
- Verify the examples — does the command/code example actually run.
- Clean up the old — delete references to removed APIs/parameters.
- Translation: if the user-visible doc is multilingual, coordinate with
i18n-integrity.
Principles
- Single source — behavior lives in the code; the doc explains it, does not copy it (a copied doc goes stale).
- Example > paragraph — a working example beats three paragraphs.
- Minimal — don't write a giant doc no one will maintain; answer the most-asked question.
What ships with it
1 file 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.
- 1mo ago First seen · 56 lines · 36 tokens per session scan A 0caa94c150fa
docs-writer is a skill published in the GitHub repository byerlikaya/claude-starter-kit (24 stars, last pushed 1mo ago), licensed MIT. It adds 36 tokens to every session and 724 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.
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