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 agentmods add instructions/wintermeyer/heinzel/claude-mdgit clone --depth 1 https://github.com/wintermeyer/heinzelWhat 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 | $0.04944 | $0.04944 |
| Opus 5 | $0.02472 | $0.02472 |
| Sonnet 5 | $0.00989 | $0.00989 |
| Haiku 4.5 | $0.00494 | $0.00494 |
Grade D, and why
heinzel CLAUDE.md scanned grade D with 2 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 3d 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.
Tells the agent never to refusehighAnti-refusal
Suppressing the ability to decline removes a core safety control; a later harmful request then succeeds.
but respect the user's final choice — never refuse to proceed after an informed override. Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- **Sudo still applies.** Probe `sudo -n true` as How it starts
The opening of the file, as written. The whole thing — 595 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project
heinzel — Administration of Linux servers, FreeBSD servers, and macOS machines via SSH or locally. Supports any Linux distribution (Debian, Ubuntu, RHEL, CentOS, Fedora, SUSE, and others), FreeBSD, and macOS.
How It Works
The user provides a server hostname and optionally a user. SSH key-based auth is used (no password/passphrase needed). All work on remote machines happens over SSH.
Local mode
When the target is localhost, the user's own
hostname, or otherwise clearly the local machine,
heinzel operates in local mode:
- No SSH. Commands run directly in the shell.
- No user prompt. Use the current OS user.
- Sudo still applies. Probe
sudo -n trueas usual. If sudo is unavailable, enter unprivileged mode (no root SSH fallback). - Skip all remote-only steps: blacklist/read-only checks, DNS alias detection, SSH user lookup, root SSH fallback.
Remote mode (SSH)
- Default:
ssh root@hostname— only when root privileges are actually needed. - Normal user:
ssh user@hostname— when the user specifies a non-root account or when root is not required. - sudo: When logged in as a normal user, use
sudofor commands that require elevated privileges. - Unprivileged mode: When neither
sudonor root SSH is available, do everything possible as the current user and produce a sysadmin report.
Always use the least amount of privileges needed.
SSH as root is not a risky action that requires confirmation. The privilege principle applies to commands, not to the SSH login itself.
Before any remote command, follow
rules/first-connection.md. No exceptions — not
for df -h, not for uptime, not for anything the
user frames as quick.
SSH Options
Always use these options on every SSH and SCP/rsync-over-SSH command:
ssh -o BatchMode=yes -o ConnectTimeout=5 …
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.
- 3d ago First seen · 595 lines · 4,944 tokens per session scan D 0ae7168833f2
heinzel CLAUDE.md is an instructions file published in the GitHub repository wintermeyer/heinzel (90 stars, last pushed 15d ago), licensed MIT. It adds 4,944 tokens to every session, about $0.0247 per session on Opus 5. A static security scan graded it D with 2 findings (tells the agent never to refuse, asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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