Borrowing it
Nothing to install: this file belongs to OlliMakarova/mcp-metro. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/OlliMakarova/mcp-metro/master/.claude/skills/edit-claude-files/SKILL.mdgit clone --depth 1 https://github.com/OlliMakarova/mcp-metroWrote 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/ollimakarova/mcp-metro/edit-claude-files)<a href="https://agentmods.dev/skills/ollimakarova/mcp-metro/edit-claude-files"><img src="https://agentmods.dev/badge/skills/ollimakarova/mcp-metro/edit-claude-files/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/ollimakarova/mcp-metro/edit-claude-files"><img src="https://agentmods.dev/badge/skills/ollimakarova/mcp-metro/edit-claude-files.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 | $0.00069 | $0.00585 |
| Opus 5 | $0.00034 | $0.00293 |
| Sonnet 5 | $0.00014 | $0.00117 |
| Haiku 4.5 | $0.00007 | $0.00059 |
Grade A, and why
edit-claude-files 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.
This is a copy
86% identical to edit-claude-files — 9 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Editing files in .claude/
Scope of this rule — read carefully. It applies to every file under .claude/ — not only SKILL.md.
This includes scripts in .claude/skills/<skill>/scripts/, hooks in .claude/hooks/, supporting reference files,
settings.json, and anything else inside the directory. Claude Code watches the whole tree and reloads on change;
direct writes risk partial reads and inconsistent state during multi-edit sessions.
To enforce this, settings.json denies the Write and Edit tools on .claude/** outright.
Attempting a direct edit will fail the permission check — that is intentional, not a bug.
Protocol — every file, every time:
- Copy the target file to a temp location outside
.claude/(works for any file type: md, js, json, cjs, …):node scripts/fcp.js tmp-edit.md .claude/skills/<skill-name>/SKILL.md node scripts/fcp.js tmp-helper.js .claude/skills/<skill-name>/scripts/helper.js - Edit the temp file — make ALL changes there (multiple Edit calls are fine).
- Save atomically via the helper script (same command, reversed argument order):
node scripts/fcp.js .claude/skills/<skill-name>/SKILL.md tmp-edit.md node scripts/fcp.js .claude/skills/<skill-name>/scripts/helper.js tmp-helper.js - Remove the temp file:
rm tmp-edit.md
Creating a new file in .claude/ — same protocol, just start from an empty temp file:
# Write the new file somewhere OUTSIDE .claude/, then fcp.js it in:
node scripts/fcp.js .claude/skills/<skill-name>/scripts/new-script.js tmp-new-script.js
rm tmp-new-script.js
CRITICAL: Never use Edit or Write directly on files inside .claude/ — always go through the
temp-copy workflow above. This covers SKILL.md, scripts, hooks, agents, settings — everything.
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 · 46 lines · 69 tokens per session scan A 84ccd442a744
edit-claude-files is a skill published in the GitHub repository OlliMakarova/mcp-metro (0 stars, last pushed 1mo ago), licensed MIT. It adds 69 tokens to every session and 585 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to edit-claude-files, differing in 9 lines, and is treated as a copy.
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