Claude Code Skills Marketplace is a collection and marketplace of skills, plugins, agents, and instructions that extend Claude Code with specialized development workflows. It is for developers who want to install existing workflows or create, validate, and package their own Claude Code skills.
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 skills add daymade/claude-code-skills --skill macos-watchdoggit clone --depth 1 https://github.com/daymade/claude-code-skillsWrote 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/daymade/claude-code-skills/macos-watchdog)<a href="https://agentmods.dev/skills/daymade/claude-code-skills/macos-watchdog"><img src="https://agentmods.dev/badge/skills/daymade/claude-code-skills/macos-watchdog.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 12 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 4 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 9 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 20 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 63 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 64 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 66 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 76 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 78 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 87 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 9 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Privilege Escalation · line 74 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Rogue Agent · line 75 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00230 | $0.02210 |
| Opus 5 | $0.00115 | $0.01105 |
| Sonnet 5 | $0.00046 | $0.00442 |
| Haiku 4.5 | $0.00023 | $0.00221 |
Grade B, and why
macos-watchdog scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
| Stop now, allow re-bootstrap later | `launchctl bootout gui/$(id -u)/<label>` (daemon: `sudo launchctl bootout system/<label>`) | How it starts
The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.
macOS Watchdog
A watchdog is a launchd job that periodically detects a recurring problem and remediates it without a human. The craft is not "how to install a plist" — it is how to keep the watchdog from becoming a new disturbance: every watchdog on this machine was born from an incident, and the recurring failure mode afterward is the watchdog itself (false "all good" reports, notification floods, re-launching apps the user quit, fork-bomb replays).
The governing principle, learned the expensive way: a watchdog's lifecycle is bound to its premise state. When the condition it exists to fix cannot be fixed by it (broken WiFi, user quit the target app, prerequisite state gone), the watchdog must stand down by itself — not wait for a human to disable it.
Entry decision tree
| The situation is… | Go to |
|---|---|
| Installing a NEW watchdog from scratch | § Deploy, then § The quiet-watchdog contract |
| An existing watchdog misbehaves (spam, re-launches apps, hammers) | § The quiet-watchdog contract, diagnose which clause it violates |
| Stopping / disabling / restarting a job | § Stop semantics |
| plist key details (KeepAlive forms, domains, logging, resource limits) | references/launchd-plist-reference.md |
| Cooldown/backoff/notification-throttle patterns + sanitized war stories | references/quiet-watchdog-patterns.md |
| SRE alert layering (page vs ticket, fatigue numbers) | references/alert-discipline.md |
The quiet-watchdog contract (the four clauses)
Before shipping or blessing any watchdog, all four must hold. Each clause exists because a real watchdog violated it.
1. Premise-state self-check — it knows when it has no job
The script's first act on every run: verify the state that justifies its existence still holds. If not, exit silently — no remediation, no notification, no side effects.
- A proxy-repair watchdog checks the proxy app is running first; user quit it → skip the cycle.
- A "did the config switch back" watcher checks the config state it watches; already switched → self-stop, not another round of misleading notifications. (Real case: a recovery watcher kept firing for 2h after its premise resolved, sending 3 spurious notices, because nothing told it to stop.)
What ships with it
9 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.
- assets/launchagent.template.plist 2.2 KB
- evals/evals.json 3.7 KB
- evals/iteration-1/eval-2-audit/fixture/broken-heal.sh 604 B runs code
- evals/iteration-1/eval-2-audit/fixture/broken-watchdog.plist 504 B
- references/alert-discipline.md 2.5 KB
- references/launchd-plist-reference.md 5.1 KB
- references/quiet-watchdog-patterns.md 6.2 KB
- scripts/new-launchagent.sh 4.4 KB runs code
- scripts/watchdog-cooldown.sh 7.3 KB runs code
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.
- 8d ago First seen · 92 lines · 230 tokens per session scan B a10fab9a5a5e
macos-watchdog is a skill published in the GitHub repository daymade/claude-code-skills (1,381 stars, last pushed yesterday), licensed MIT. It adds 230 tokens to every session and 2,210 once invoked, about $0.0011 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.
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