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 anilcancakir/claude-code --skill project-md-writergit clone --depth 1 https://github.com/anilcancakir/claude-codeWrote 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/anilcancakir/claude-code/project-md-writer)<a href="https://agentmods.dev/skills/anilcancakir/claude-code/project-md-writer"><img src="https://agentmods.dev/badge/skills/anilcancakir/claude-code/project-md-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/anilcancakir/claude-code/project-md-writer"><img src="https://agentmods.dev/badge/skills/anilcancakir/claude-code/project-md-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 | $0.00053 | $0.01781 |
| Opus 5.5 | $0.00021 | $0.00712 |
| Sonnet 5.5 | $0.00011 | $0.00356 |
| Haiku 4.5 | $0.00005 | $0.00178 |
Grade A, and why
project-md-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 12d 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 — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PROJECT.md Writer
PROJECT.md answers three questions an agent cannot get from the code: what this project is for, what is in and out of scope, and which choices are already made. An agent reads it before it proposes or scopes work, then goes back to the code. This skill writes it, updates it, or audits an existing one, in the shape an agent reads best.
Scope: one file (or the split files the size rule names), plus one pointer line in the rules file. It does not edit code, README or CHANGELOG, and it does not write commands or conventions. Report adjacent problems instead of fixing them.
Where it sits
| Layer | File | Loaded | Holds |
|---|---|---|---|
| Rules | AGENTS.md | every session | commands, conventions, off-limits; write it by hand |
| Why and scope | PROJECT.md | when an agent reads it | what, value, scope, constraints, decisions; a feature's PRD and roadmap from /ac/product feed its scope and non-goals |
| How it is built | ARCHITECTURE.md | when an agent reads it | architecture; route through the architecture-md-writer skill (DESIGN.md is how it looks, through the design-md-writer skill) |
| State | a notes or plan file | per task | progress and next steps |
PROJECT.md stays out of the always-loaded layer on purpose. opencode loads AGENTS.md into every agent in full at session start, and Anthropic's memory docs target under 200 lines per file because adherence drops as it grows. A pointer line with a trigger gives the agent the file when the task needs it and costs one line otherwise.
Pick the mode
- No PROJECT.md exists: write.
- One exists and is mostly right: update in place, keep its headings.
- One exists and the user says agents ignore it, or its quality is unknown: audit first and report ranked findings with line numbers; edit only when the user asked for the fix.
If the content is commands or conventions, use AGENTS.md. If it is architecture, use ARCHITECTURE.md. If it is progress or a to-do list, use a notes file. If it is one feature's spec, use the plan skill.
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.
- 12d ago Changed ddf18dd546dd
- 14d ago Changed · +20 tokens per session 7137e6df30a8
- 15d ago First seen · 122 lines · 33 tokens per session scan A 136b34095414
project-md-writer is a skill published in the GitHub repository anilcancakir/claude-code (4 stars, last pushed 2d ago), licensed MIT. It adds 53 tokens to every session and 1,781 once invoked, about $0.0002 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 2026-10-31.
project-md-writer compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| project-md-writeranilcancakir/claude-code | Skill | 4 | 2d ago | MIT | A | 53 | Claude Code, Codex |
| researcherbitwize-music-studio/claude-ai-music-skills | Skill | 668 | today | CC0-1.0 | A | 38 | Claude Code |
| sheet-music-publisherbitwize-music-studio/claude-ai-music-skills | Skill | 668 | today | CC0-1.0 | A | 36 | Claude Code |
| validate-albumbitwize-music-studio/claude-ai-music-skills | Skill | 668 | today | CC0-1.0 | A | 33 | Claude Code |
| import-artbitwize-music-studio/claude-ai-music-skills | Skill | 668 | today | CC0-1.0 | A | 32 | Claude Code |
| plagiarism-checkerbitwize-music-studio/claude-ai-music-skills | Skill | 668 | today | CC0-1.0 | A | 35 | Claude Code |
| promote-ideabitwize-music-studio/claude-ai-music-skills | Skill | 668 | today | CC0-1.0 | A | 50 | Claude Code |