What is release-mac-app?

A release workflow for macOS apps that use Sparkle, a framework for delivering app updates. It uses a repository release manifest and shared scripts for release files, update feeds, and checks.

Use it to check release status, create release notes, generate changelog HTML, and handle shared Sparkle release tasks for macOS apps.

It provides a consistent way to prepare and verify releases without exposing signing keys. It also separates shared release work from app-specific build and packaging steps.

release-mac-app — Skill by steipete

Install

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.

agentmods

npx agentmods add skills/steipete/agent-scripts/release-mac-app

Any agent

npx skills add steipete/agent-scripts --skill release-mac-app

Clone the repo

git clone --depth 1 https://github.com/steipete/agent-scripts

Made for: Claude Code, Codex.

Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,028 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00026	$0.02028
Opus 5	$0.00013	$0.01014
Sonnet 5	$0.00005	$0.00406
Haiku 4.5	$0.00003	$0.00203

Measured today against content hash 88f7d687f4dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

release-mac-app 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 today.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/lib/mac_release.sh, scripts/mac-release-provider.test.sh, scripts/mac-release.test.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/release-mac-app/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mac App Release

Use for BlackBar, RepoBar, CodexBar, Trimmy, and similar Sparkle-updated macOS apps.

Rules

Work from the app repo.
Read .mac-release.env; it is the repo-owned release manifest.
Use scripts/mac-release from this skill for shared release/appcast/verify work.
Execute mac-release directly so its privileged Bash shebang ignores startup hooks; if an explicit interpreter is unavoidable, use /bin/bash -p, never plain bash mac-release.
Keep app-specific build/package/sign behavior in repo scripts unless it is already manifest-driven.
Never print private key material.
Prefer MAC_RELEASE_SPARKLE_OP_REF for headless release signing when the key is in 1Password; otherwise prefer Keychain Sparkle signing. SPARKLE_PRIVATE_KEY_FILE is an explicit local override only.

Commands

/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release status
/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release notes [version] [output.md]
/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release changelog-html <version> [CHANGELOG.md]
/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release make-appcast <zip> [feed-url]
/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release verify-appcast [version]
/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release check-assets [tag]
/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release release
/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release codesign-run [--with-package-secrets] -- <command> [args...]
/Users/steipete/Projects/agent-scripts/skills/release-mac-app/scripts/mac-release package-run -- <command> [args...]

Manifest

Each repo owns .mac-release.env. It must contain no secrets.

Required:

MAC_RELEASE_APP_NAME
MAC_RELEASE_REPO
MAC_RELEASE_BUNDLE_ID
MAC_RELEASE_VERSION_FILE
MAC_RELEASE_APPCAST
MAC_RELEASE_FEED_URL
MAC_RELEASE_DOWNLOAD_URL_PREFIX
MAC_RELEASE_APP_ZIP
either MAC_RELEASE_INFO_PLIST or MAC_RELEASE_SUPUBLIC_ED_KEY
MAC_RELEASE_PACKAGE_CMD

Read the full file on GitHub · 107 lines

Files

What ships with it

4 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.

Changes

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.

today Changed · +2 lines 88f7d687f4dc
2d ago First seen · 105 lines · 26 tokens per session scan A 3a468264a6e8

Subscribe to this mod's changes

release-mac-app is a skill published in the GitHub repository steipete/agent-scripts (6,590 stars, last pushed today), licensed MIT. It adds 26 tokens to every session and 2,028 once invoked, about $0.0001 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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