What is dotfiles CLAUDE.md?

A set of instructions for coding agents working on a dotfiles repository. Dotfiles are configuration files that customize a computer, and chezmoi is a tool for managing them across machines.

Use it when editing the M0rtalPhe0nix/dotfiles project, especially for configuration changes, bootstrapping, software updates, and platform-specific files.

It helps an agent avoid exposing secrets, changing protected settings, or breaking the repository's setup and update rules.

dotfiles CLAUDE.md — Instructions file for coding agents by M0rtalPhe0nix: A set of instructions for coding agents working on…

Install

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.

agentmods

npx agentmods add instructions/m0rtalphe0nix/dotfiles/claude-md

Clone the repo

git clone --depth 1 https://github.com/M0rtalPhe0nix/dotfiles

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/m0rtalphe0nix/dotfiles/claude-md.svg)](https://agentmods.dev/instructions/m0rtalphe0nix/dotfiles/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/m0rtalphe0nix/dotfiles/claude-md"><img src="https://agentmods.dev/badge/instructions/m0rtalphe0nix/dotfiles/claude-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 1,109 This file is loaded in full into every session.

When invoked 1,109 The same file — it is already loaded in full.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01109	$0.01109
Opus 5	$0.00554	$0.00554
Sonnet 5	$0.00222	$0.00222
Haiku 4.5	$0.00111	$0.00111

Measured 5d ago against content hash a770c89e2bfe, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

dotfiles CLAUDE.md 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 5d 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.

CLAUDE.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Coding Agent Instructions

Repository Purpose

This is the public MIT-licensed M0rtalPhe0nix/dotfiles repository. It targets Apple Silicon macOS and Debian/Ubuntu desktops. Chezmoi manages files and platform differences, Homebrew manages shared CLI tools, apt manages Linux prerequisites, and mise manages Node and Python.

Safety Rules

Never commit secrets, credentials, tokens, private keys, machine identifiers, or host-specific values.
Keep Git authentication, signing, and unrelated host settings unmanaged.
Preserve ~/.config/zsh/local.zsh and mode-0600 ~/.config/zsh/secrets.zsh as host-local files.
Do not add global MCP servers beyond the managed Headroom and Serena integrations or add global AI coding instructions unless the project requirements explicitly change.
Do not make bootstrap uninstall packages or make rollback uninstall packages.
Do not make dotfiles apply upgrade software. Upgrades belong exclusively in dotfiles update.
Preserve extra VS Code extensions; manage only the extension baseline.
Treat this repository as public even before changes are pushed.

Chezmoi Conventions

Use Chezmoi source-state names such as dot_zshrc, dot_config/, private_, executable_, create_, and symlink_ correctly.
Put attributes on the source path component they modify. For example, use dot_config/zsh/create_private_secrets.zsh, not create_private_dot_config/zsh/secrets.zsh.
Add .tmpl only when a file contains Chezmoi template expressions.
Keep platform-specific target exclusions in .chezmoiignore.
Keep repository-only files such as tests, manifests, documentation, and the canonical capability-catalog/ out of the managed target set.
Install reusable capabilities into each consuming repository with dotfiles capabilities init and dotfiles capabilities sync; Chezmoi must not install or synchronize them globally.
Initialization data must remain public-safe. Git identity and installation choices belong in the local Chezmoi config, not committed files.

Read the full file on GitHub · 98 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.

5d ago First seen · 98 lines · 1,109 tokens per session scan A a770c89e2bfe

Subscribe to this mod's changes

dotfiles CLAUDE.md is an instructions file published in the GitHub repository M0rtalPhe0nix/dotfiles (1 stars, last pushed 10d ago), licensed MIT. It adds 1,109 tokens to every session, about $0.0055 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 2026-08-31.

chezmoi claude-code debian dotfiles ghostty homebrew

dotfiles CLAUDE.md