packaging-notarization

Guidance for preparing a macOS app for distribution by packaging, code signing, and notarization. Notarization is Apple’s review of a signed app so macOS can trust software downloaded by users.

In plain words
What is it for?
Use it when archiving an app, inspecting exported bundles, checking nested frameworks and helper tools, troubleshooting signing or notarization, or validating distribution readiness.
Why use it?
It helps distinguish shipping and trust problems from ordinary local development issues and identifies missing bundle, signing, entitlement, or hardened-runtime requirements.

Skill for Claude CodeCodex

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/robinebers/openusage/packaging-notarization
Any agent
npx skills add robinebers/openusage --skill packaging-notarization
Clone the repo
git clone --depth 1 https://github.com/robinebers/openusage

Made for: Claude Code, Codex.

Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 301 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 92% copy Near-identical to another mod 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.

ModelPer sessionOnce invoked
Fable 5 $0.00047 $0.00301
Opus 5 $0.00023 $0.00151
Sonnet 5 $0.00009 $0.00060
Haiku 4.5 $0.00005 $0.00030

Measured 2d ago against content hash 47652322c0c4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

packaging-notarization 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 2d 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.

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.

Origin

This is a copy

92% identical to macos-packaging-notarization — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/packaging-notarization/SKILL.md · 48 lines

What it actually says

Packaging & Notarization

Quick Start

Use this skill when the work is about shipping the app rather than merely running it locally: archives, exported app bundles, notarization readiness, hardened runtime, or distribution validation.

Workflow

  1. Confirm the distribution goal.

    • Local archive validation
    • Signed distributable app
    • Notarization troubleshooting
  2. Inspect the artifact.

    • Validate app bundle structure.
    • Check nested frameworks, helper tools, and entitlements.
  3. Inspect signing and runtime prerequisites.

    • Hardened runtime
    • Signing identity
    • Nested code signatures
    • Required entitlements
  4. Explain notarization readiness or failure.

    • Separate packaging issues from trust-policy symptoms.
    • Point to the minimum follow-up validation commands.

Guardrails

  • Do not present notarization as required for ordinary local debug runs.
  • Call out when you lack the actual exported artifact and are inferring from project settings.
  • Keep advice concrete and verifiable.

Output Expectations

Provide:

  • what artifact or settings were inspected
  • whether the app looks distribution-ready
  • the top missing prerequisite or failure mode
  • the next validation or repair step
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.

  1. 2d ago First seen · 48 lines · 47 tokens per session scan A 47652322c0c4

Subscribe to this mod's changes

packaging-notarization is a skill published in the GitHub repository robinebers/openusage (3,975 stars, last pushed today), licensed MIT. It adds 47 tokens to every session and 301 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to macos-packaging-notarization, differing in 4 lines, and is treated as a copy.

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