Agent skill

macOS Auto Update

by fayazara in fayazara/macos-app-skills

Add Sparkle auto-update support to a native macOS app. An agent skill from fayazara/macos-app-skills.

No licenceAuto-check passedMobile

Install macOS Auto Update

skills CLI
$ npx skills add fayazara/macos-app-skills --skill macos-auto-update -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install fayazara/macos-app-skills macos-auto-update --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/fayazara/macos-app-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/auto-update .claude/skills/macos-auto-update && rm -rf skills-src

Use ~/.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/

Facts

Skill name
macos-auto-update
GitHub stars
676
Token cost
~1.8k tokens
SKILL.md length
481 words
Files
2 (incl. references)
Skills in repo
4
Repo updated
First seen
Licence
None found

At a glance

Add Sparkle auto-update support to a native macOS app. An agent skill from fayazara/macos-app-skills.

  • Works in 5 steps: Add Sparkle via SPM → Create UpdaterManager.swift → Configure Info.plist → …
  • The user wants to add auto-updates
  • SKILL.md covers Overview, Step 1: Add Sparkle via SPM, Step 2: Create… and Step 3: Configure Info.plist, plus 5 more sections
  • Runs Swift scripts from its folder; reaches github.com and raw.githubusercontent.com

What it does

macOS Auto Update is an agent skill from fayazara/macos-app-skills. Add Sparkle auto-update support to a native macOS app. Use this skill whenever the user wants to add auto-updates, implement Sparkle, set up an appcast feed, add "Check for Updates" to their app, or integrate automatic update checking. Also trigger when the user mentions Sparkle, appcast, SUFeedURL, EdDSA signing, or update notifications. This covers the full setup: adding the Sparkle SPM dependency, creating the UpdaterManager singleton, wiring it into the app delegate and UI, configuring Info.plist, and…

Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files.

It sits in Mobile, covering iOS development. It works with macOS. The repository describes itself as: AI coding agent skills for building, shipping, and maintaining native macOS apps.

When your agent uses it

  • The user wants to add auto-updates
  • Implement Sparkle
  • Set up an appcast feed
  • Add Check for Updates to their app

Example prompts

  • “Check for Updates”
  • “/macos-auto-update”

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Add Sparkle via SPM
  2. Create UpdaterManager.swift
  3. Configure Info.plist
  4. Wire Into App
  5. Create Initial Appcast

What it can do on your machine

Read from SKILL.md and the folder at commit a60365a. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships script files (Swift), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • github.com
    • raw.githubusercontent.com
    • andymatuschak.org
    • purl.org

    Also links to:

    • sparkle-project.org

    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

macOS Auto Update loads about 1.8k tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 141 tokens; SKILL.md has 481 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~141
When it runs · the whole SKILL.md, loaded when a task matches
~1.8k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.2k

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 passed

The automated check found no risky patterns in SKILL.md.

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 481 words (~1,791 tokens).

“This skill adds Sparkle auto-update support to a native macOS app. Sparkle is the standard open-source framework for macOS app updates outside the Mac App Store.”

— opening of SKILL.md by fayazara
name
macos-auto-update

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file (references) in auto-update of fayazara/macos-app-skills.

  • SKILL.md
  • references/UpdaterManager.swift

Open the folder on GitHubat commit a60365a

Compare with similar skills

macOS Auto Update 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.

macOS Auto Update compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
macOS Auto Update this skillfayazara/macos-app-skills676—~1.8kAutomated safety check: PassNone
Hig Project Contextraintree-technology/hig-doctor1435 repos~1.2kAutomated safety check: PassMIT
Hig Components Contentraintree-technology/hig-doctor1435 repos~1.3kAutomated safety check: PassMIT
API Explorationsozercan/kaset2.4k—~454Automated safety check: PassMIT
Dev Loop Packagingsozercan/kaset2.4k—~388Automated safety check: PassMIT
App ItChristian-Katzmann/app-it216—~2.4kAutomated safety check: PassMIT

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Works with

Categories

Questions about macOS Auto Update

What does macOS Auto Update do?

Add Sparkle auto-update support to a native macOS app. An agent skill from fayazara/macos-app-skills. macOS Auto Update is an agent skill from fayazara/macos-app-skills. Add Sparkle auto-update support to a native macOS app.

When should I use macOS Auto Update?

macOS Auto Update fits situations like: the user wants to add auto-updates; implement Sparkle; set up an appcast feed; add Check for Updates to their app.

How do I install macOS Auto Update in Claude Code?

Run `npx skills add fayazara/macos-app-skills --skill macos-auto-update -a claude-code`. Or copy the skill folder (auto-update in fayazara/macos-app-skills) into .claude/skills/macos-auto-update in your project. Claude Code loads it when a task matches its description.

How do I install macOS Auto Update in Codex?

Run `npx skills add fayazara/macos-app-skills --skill macos-auto-update -a codex`. Or copy the skill folder (auto-update in fayazara/macos-app-skills) into .agents/skills/macos-auto-update in your project. Codex loads it when a task matches its description.

Can I use macOS Auto Update 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 fayazara/macos-app-skills --skill macos-auto-update -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/macos-auto-update, .gemini/skills/macos-auto-update, .github/skills/macos-auto-update and .opencode/skills/macos-auto-update in your project.

What does macOS Auto Update need to run?

Going by SKILL.md and its folder, macOS Auto Update needs Swift for the scripts in its folder.

Does macOS Auto Update access the network?

SKILL.md names 5 domains. In commands or code: github.com, raw.githubusercontent.com, andymatuschak.org and purl.org; the agent is likely to contact these when it follows the instructions. As links in the text: sparkle-project.org. This is read from the text; nothing was executed.

Is macOS Auto Update safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does macOS Auto Update use?

No licence was found for macOS Auto Update or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does macOS Auto Update use?

About 1.8k tokens (SKILL.md is roughly 7.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 447 tokens, read only when the agent opens those files.

What are the alternatives to macOS Auto Update?

Skills that share tags, products or a category with macOS Auto Update: Hig Project Context (raintree-technology/hig-doctor, 143 stars), Hig Components Content (raintree-technology/hig-doctor, 143 stars), API Exploration (sozercan/kaset, 2.4k stars) and Dev Loop Packaging (sozercan/kaset, 2.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains macOS Auto Update?

fayazara (a GitHub user) maintains it in fayazara/macos-app-skills, which has 676 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on May 27, 2026.

Source: fayazara/macos-app-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.