Borrowing it
Nothing to install: this file belongs to shunsock/dotfiles. 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/shunsock/dotfiles/main/.claude/skills/update__nix_darwin/SKILL.mdgit clone --depth 1 https://github.com/shunsock/dotfilesWrote 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/shunsock/dotfiles/update__nix_darwin)<a href="https://agentmods.dev/skills/shunsock/dotfiles/update__nix_darwin"><img src="https://agentmods.dev/badge/skills/shunsock/dotfiles/update__nix_darwin.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00098 | $0.00753 |
| Opus 5 | $0.00049 | $0.00377 |
| Sonnet 5 | $0.00020 | $0.00151 |
| Haiku 4.5 | $0.00010 | $0.00075 |
Grade B, and why
update__nix_darwin 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.
- このスキルは **`task apply` を実行しない**。apply は sudo を伴い Claude では実行できないため、適用はユーザーに依頼する (PR マージ後に手動で `task apply`)。 The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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 · 60 lines · 98 tokens per session scan B db0b75131c5c
update__nix_darwin is a skill published in the GitHub repository shunsock/dotfiles (10 stars, last pushed 4d ago), with no licence file. It adds 98 tokens to every session and 753 once invoked, about $0.0005 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 2026-08-31.
Other skills, from other repositories
git-commit
Create a new git commit for staged changes. Use when the user asks to commit staged changes with an auto-generated Conventional Commits message, or when Claude Code itself wants to run git commit.
github-issue-create
Create a GitHub issue with an auto-generated description. Use when the user asks to open an issue for a bug, feature request, or task.
github-pr-create
Create a pull request with an auto-generated description. Use when the user asks to open a PR for the current branch's changes.
save-memory
Export and distill the current conversation into a memory file. Use when the user asks to save, remember, or note the current session for future context.
inspect-malicious-code
Inspect a project for potentially malicious code (malware, spyware, etc.) using static analysis only. Use when the user asks to audit a project or dependency for malicious or suspicious code.
open-weburl
Open URLs from numbered references, repository names, or the context. Use when the user asks to open URLs or GitHub repositories mentioned in the conversation.