Openclaw Live Updater
openclaw/openclaw
Maintain the canonical live OpenClaw main checkout, macOS LaunchAgent-managed Gateway, local macOS app, exact-head main CI, and recurring full release validation.
Manage nix-managed launchd and systemd services. An agent skill from r17x/universe.
Install Nix Service
$ npx skills add r17x/universe --skill nix-service -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install r17x/universe nix-service --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/r17x/universe.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/nix/service .claude/skills/nix-service && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "nix-service" agent skill from https://github.com/r17x/universe/tree/main/.claude/skills/nix/service into .claude/skills/nix-service/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nix-service", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/r17x/universe/tree/main/.claude/skills/nix/serviceType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add r17x/universe --skill nix-service -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install r17x/universe nix-service --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/r17x/universe.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/nix/service .agents/skills/nix-service && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "nix-service" agent skill from https://github.com/r17x/universe/tree/main/.claude/skills/nix/service into .agents/skills/nix-service/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nix-service", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add r17x/universe --skill nix-service -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install r17x/universe nix-service --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/r17x/universe.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/nix/service .cursor/skills/nix-service && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "nix-service" agent skill from https://github.com/r17x/universe/tree/main/.claude/skills/nix/service into .cursor/skills/nix-service/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nix-service", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/r17x/universe.git --path .claude/skills/nix/service--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add r17x/universe --skill nix-service -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install r17x/universe nix-service --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/r17x/universe.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/nix/service .gemini/skills/nix-service && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "nix-service" agent skill from https://github.com/r17x/universe/tree/main/.claude/skills/nix/service into .gemini/skills/nix-service/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nix-service", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install r17x/universe nix-serviceInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add r17x/universe --skill nix-service -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/r17x/universe.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/nix/service .github/skills/nix-service && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "nix-service" agent skill from https://github.com/r17x/universe/tree/main/.claude/skills/nix/service into .github/skills/nix-service/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nix-service", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add r17x/universe --skill nix-service -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install r17x/universe nix-service --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/r17x/universe.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/nix/service .opencode/skills/nix-service && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "nix-service" agent skill from https://github.com/r17x/universe/tree/main/.claude/skills/nix/service into .opencode/skills/nix-service/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nix-service", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
nix-service- GitHub stars
- 151
- Token cost
- ~513 tokens
- SKILL.md length
- 38 words
- Files
- 1
- Skills in repo
- 5
- Repo updated
- First seen
- Licence
- None found
At a glance
Manage nix-managed launchd and systemd services. An agent skill from r17x/universe.
- Tasks that involve Linux administration
- SKILL.md covers macOS (launchd), Linux (systemd) and Nix Configuration
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Nix Service is an agent skill from r17x/universe. Manage nix-managed launchd and systemd services
Its SKILL.md is about 510 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in DevOps & Cloud, covering Linux administration. It works with Linux. The repository describes itself as: let universe speak itself ❄️ ƛ.
When your agent uses it
- Tasks that involve Linux administration
Example prompts
- “/nix-service”
Requirements
- Pre-approved tools (allowed-tools): Bash, Read
What it can do on your machine
Read from SKILL.md and the folder at commit 489dbda. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
BashRead
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash and nix).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Nix Service loads about 513 tokens when it runs. Until then it costs about 15 tokens; SKILL.md has 38 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NoteRuns commands with sudoSKILL.md:42
sudo launchctl bootout $DOMAIN - NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash, Read
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 38 words (~513 tokens).
“Use lib.mkForce when the service module already sets values.”
- name
- nix-service
- allowed-tools
- Bash, Read
Files
Just SKILL.md in .claude/skills/nix/service of r17x/universe.
Open the folder on GitHubat commit 489dbda
Compare with similar skills
Nix Service next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Nix Service this skillr17x/universe | 151 | — | ~513 | Automated safety check: Notes | None | |
| Openclaw Live Updateropenclaw/openclaw | 392k | — | ~3.7k | Automated safety check: Pass | MIT | |
| Openbkn Deployopenbkn-ai/bkn-foundry | 655 | — | ~1.9k | Automated safety check: Notes | Custom licence | |
| Minimegasandia-minimega/minimega | 160 | — | ~3.2k | Automated safety check: Pass | GPL-3.0-only | |
| Setup Cpu Proxy Serverdrawthingsai/draw-things-community | 584 | — | ~3.8k | Automated safety check: Pass | GPL-3.0 | |
| Linux Troubleshooting with Inspektor Gadgetinspektor-gadget/inspektor-gadget | 2.9k | — | ~2.4k | Automated safety check: Notes | Apache-2.0 |
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More from r17x/universe
Nix
r17x/universe
Nix flakes, nix-darwin, NixOS, and home-manager development assistance
Nix Debug
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Deep debugging of Nix expressions, evaluation, and derivations
Nix Flake
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Debug and evaluate Nix flake expressions. An agent skill from r17x/universe.
Nix Module
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Create and structure Nix modules for darwin, NixOS, or home-manager
Related
Works with
Categories
Questions about Nix Service
What does Nix Service do?
Manage nix-managed launchd and systemd services. An agent skill from r17x/universe. Nix Service is an agent skill from r17x/universe.
When should I use Nix Service?
Nix Service fits situations like: tasks that involve Linux administration.
How do I install Nix Service in Claude Code?
Run `npx skills add r17x/universe --skill nix-service -a claude-code`. Or copy the skill folder (.claude/skills/nix/service in r17x/universe) into .claude/skills/nix-service in your project. Claude Code loads it when a task matches its description.
How do I install Nix Service in Codex?
Run `npx skills add r17x/universe --skill nix-service -a codex`. Or copy the skill folder (.claude/skills/nix/service in r17x/universe) into .agents/skills/nix-service in your project. Codex loads it when a task matches its description.
Can I use Nix Service in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add r17x/universe --skill nix-service -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nix-service, .gemini/skills/nix-service, .github/skills/nix-service and .opencode/skills/nix-service in your project.
What does Nix Service need to run?
SKILL.md names no scripts, command-line tools or credentials: Nix Service is instructions for the agent only. Its frontmatter pre-approves these tools: Bash, Read.
Does Nix Service access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Nix Service safe to install?
Our automated static check of SKILL.md found notes only (runs commands with sudo; pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Nix Service use?
No licence was found for Nix Service or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Nix Service use?
About 513 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Nix Service?
Skills that share tags, products or a category with Nix Service: Openclaw Live Updater (openclaw/openclaw, 392k stars), Openbkn Deploy (openbkn-ai/bkn-foundry, 655 stars), Minimega (sandia-minimega/minimega, 160 stars) and Setup Cpu Proxy Server (drawthingsai/draw-things-community, 584 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Nix Service?
r17x (a GitHub user) maintains it in r17x/universe, which has 151 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 4, 2026.
Source: r17x/universe on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.