attmcojp-claude-md

attmcojp-claude-md is a skill for Claude Code, Codex from natsukium/dotfiles. It costs 138 tokens per session (1,323 once invoked), scanned B, original, CC0-1.0.

Instructions for changing an organization-wide CLAUDE.md file, which contains rules applied to every repository in that organization.

In plain words
What is it for?
Use them when adding, changing, or removing a rule shared across all attmcojp repositories.
Why use it?
They prevent edits to a read-only generated copy that would be lost, and explain how to update the encrypted source file safely.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions CLAUDE.md.

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /Users/natsukium/src/private/github.com/natsukium/dotfiles.

Good fit Use them when adding, changing, or removing a rule shared across all attmcojp repositories.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for attmcojp-claude-md

README.md
[![agentmods](https://agentmods.dev/badge/skills/natsukium/dotfiles/attmcojp-claude-md/github.svg)](https://agentmods.dev/skills/natsukium/dotfiles/attmcojp-claude-md)
Your own site
<a href="https://agentmods.dev/skills/natsukium/dotfiles/attmcojp-claude-md"><img src="https://agentmods.dev/badge/skills/natsukium/dotfiles/attmcojp-claude-md/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.

agentmods 80×15 button for attmcojp-claude-md

Your own site · 80×15
<a href="https://agentmods.dev/skills/natsukium/dotfiles/attmcojp-claude-md"><img src="https://agentmods.dev/badge/skills/natsukium/dotfiles/attmcojp-claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 138 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,323 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00138 $0.01323
Opus 5 $0.00069 $0.00661
Sonnet 5 $0.00028 $0.00265
Haiku 4.5 $0.00014 $0.00132

Measured 12d ago against content hash bee6a0e1ffa7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade B, and why

attmcojp-claude-md scanned grade B with 1 finding 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

run, which needs sudo and is the user's call. Say so explicitly when reporting done —
hosts/darwin/work/skills/attmcojp-claude-md/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

The attmcojp org-level CLAUDE.md

~/src/work/github.com/attmcojp/CLAUDE.md applies to every attmcojp checkout beneath it, and it is not editable. It is a symlink into the sops-nix secret store, mode 0400, replaced wholesale at the next activation. A write there fails; forcing the write to succeed — chmod, replacing the symlink, writing through it — produces a change that the next activation discards without warning. Never edit that path.

The source of truth is hosts/darwin/work/attmcojp-claude.md in the dotfiles repository, encrypted with sops. The rules are attmcojp-internal and that repository is public, which is why the file is encrypted rather than stored as text, and why the procedure below never lets the plaintext enter a working tree.

Procedure

sops and treefmt live in the dotfiles devShell, not on the ambient PATH — bare make fails with make: sops: No such file or directory. Run every command below through nix develop --command with the dotfiles repo as the working directory: the devShell hook acts on the cwd (installing pre-commit hooks, syncing files), so launching it from another repository mutates that repository instead.

cd /Users/natsukium/src/private/github.com/natsukium/dotfiles

1. Decrypt. The path to the plaintext copy is printed on stdout.

nix develop --command make attmcojp-claude-md-open

2. Edit that file with the normal file tools. It sits under ~/.cache, deliberately outside every git repository. Do not copy it anywhere else, and do not paste its contents into a commit message, PR, issue, or any other repository.

3. Re-encrypt, which also deletes the plaintext copy.

nix develop --command make attmcojp-claude-md-seal

File has not changed, exiting (make exits 2) means the edit was a no-op. That is a signal, not a broken command — report it rather than retrying.

Sealing deletes the plaintext copy only on success. Any failure leaves it in place on purpose, so an edit is never lost to a transient error; if the change is being abandoned rather than retried, remove it by hand:

Read the full file on GitHub · 114 lines

Changes

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.

  1. 12d ago First seen · 114 lines · 138 tokens per session scan B bee6a0e1ffa7

Subscribe to this mod's changes

attmcojp-claude-md is a skill published in the GitHub repository natsukium/dotfiles (103 stars, last pushed today), licensed CC0-1.0. It adds 138 tokens to every session and 1,323 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.