Borrowing it
Nothing to install: this file belongs to wintermeyer/heinzel. 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/wintermeyer/heinzel/main/.claude/skills/heinzel-housekeeping/SKILL.mdgit clone --depth 1 https://github.com/wintermeyer/heinzelWrote 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/wintermeyer/heinzel/heinzel-housekeeping)<a href="https://agentmods.dev/skills/wintermeyer/heinzel/heinzel-housekeeping"><img src="https://agentmods.dev/badge/skills/wintermeyer/heinzel/heinzel-housekeeping/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/wintermeyer/heinzel/heinzel-housekeeping"><img src="https://agentmods.dev/badge/skills/wintermeyer/heinzel/heinzel-housekeeping.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00124 | $0.01097 |
| Opus 5 | $0.00062 | $0.00549 |
| Sonnet 5 | $0.00025 | $0.00219 |
| Haiku 4.5 | $0.00012 | $0.00110 |
Grade A, and why
heinzel-housekeeping 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 9d 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 — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
heinzel-housekeeping
Routine health inspection for a server or the local machine. Never run automatically — only on explicit user request. The whole of the heinzel first-connection onboarding pipeline still applies before any of this runs.
Workflow
- Load overrides. Before running any check, apply the full
heinzel rule-override chain (later wins):
memory/custom-rules/heinzel-housekeeping.mdif present (global custom overrides for this skill —## Add:,## Replace:,## Remove:prefixes perCLAUDE.md).memory/housekeeping.mdif present (additional cross- server custom checks — free-form Markdown, gitignored by default).memory/servers/<hostname>/memory.md(service list, last-known state, per-server quirks).memory/servers/<hostname>/rules.mdif present (per-server rule overrides — same prefixes as above, highest precedence). Note:memory/custom-rules/all.mdis already loaded by the CLAUDE.md session-start preflight — do not re-read it.
- Select checks. Run all baseline checks for the detected OS
plus any service-specific checks triggered by entries in the
server's
memory.md(e.g. PostgreSQL, nginx, Docker). The backup-presence check fromreferences/backup-presence.mdruns on every host, independent ofmemory.mdentries. - Run the version check procedure from
rules/version-check.mdfor all Tier 1 software and include the "Versions" section in the report. - Run checks in 2–3 parallel batches for speed — not one massive batch. If a single parallel tool call errors, Claude Code cancels sibling calls, so grouping limits blast radius.
- Emit the report using the format in
references/report-format.md. - Update
memory.mdimmediately after, if the checks revealed changed facts (disk usage shifted significantly, a new service appeared, a service was removed). - Log the summary to the system journal and mirror to the
local changelog per
rules/changelog.md:
What ships with it
6 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.
- 9d ago First seen · 97 lines · 124 tokens per session scan A 23b6f33e0489
heinzel-housekeeping is a skill published in the GitHub repository wintermeyer/heinzel (91 stars, last pushed 22d ago), licensed MIT. It adds 124 tokens to every session and 1,097 once invoked, about $0.0006 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 2026-08-30.
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