Agent skill

External Purchases

by rshankras in rshankras/claude-code-apple-skills

US web checkout via the StoreKit External Purchase Link entitlement — currently 0% Apple commission (litigation ongoing), how to ship it safely, and how to architect for a commission flip so a…

MITAuto-check passedSales & Support

Install External Purchases

skills CLI
$ npx skills add rshankras/claude-code-apple-skills --skill external-purchases -a claude-code

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

GitHub CLI
$ gh skill install rshankras/claude-code-apple-skills external-purchases --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/rshankras/claude-code-apple-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/monetization/external-purchases .claude/skills/external-purchases && 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
external-purchases
GitHub stars
785
Token cost
~1.1k tokens
SKILL.md length
463 words
Files
1
Skills in repo
41
Repo updated
First seen
Licence
MIT

At a glance

US web checkout via the StoreKit External Purchase Link entitlement — currently 0% Apple commission (litigation ongoing), how to ship it safely, and how to architect for a commission flip so a…

  • Adding external purchase links
  • SKILL.md covers When This Skill Activates, The rules of the road, Architecture: the commission… and Decision sketch, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Weighing web checkout vs IAP

What it does

External Purchases is an agent skill from rshankras/claude-code-apple-skills. US web checkout via the StoreKit External Purchase Link entitlement — currently 0% Apple commission (litigation ongoing), how to ship it safely, and how to architect for a commission flip so a future ruling is a config change, not a rewrite. Use when adding external purchase links, weighing web checkout vs IAP, or planning US-storefront pricing strategy.

Its SKILL.md is about 1.1k 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 Sales & Support, covering Pricing strategy and Legal research. The repository describes itself as: Claude Code skills for Apple platform development (iOS, macOS, iPadOS) — product validation, code generation, App Store optimization, and more. The licence is MIT.

When your agent uses it

  • Adding external purchase links
  • Weighing web checkout vs IAP
  • Planning US-storefront pricing strategy

Example prompts

  • “/external-purchases”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write, Edit, Glob, Grep

What it can do on your machine

Read from SKILL.md and the folder at commit 9ffb831. 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:

    • Read
    • Write
    • Edit
    • Glob
    • Grep

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

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

  • Network

    Links to these hosts (documentation or services it may open):

    • developer.apple.com

    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

External Purchases loads about 1.1k tokens when it runs. Until then it costs about 94 tokens; SKILL.md has 463 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~94
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

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

The full file from rshankras/claude-code-apple-skills at commit 9ffb831, republished under its MIT licence (© rshankras). 463 words, ~1,111 tokens.

Download SKILL.mdSave it as .claude/skills/external-purchases/SKILL.md (or your agent's skills folder).
name
external-purchases
description
US web checkout via the StoreKit External Purchase Link entitlement — currently 0% Apple commission (litigation ongoing), how to ship it safely, and how to architect for a commission flip so a future ruling is a config change, not a rewrite. Use when adding external purchase links, weighing web checkout vs IAP, or planning US-storefront pricing strategy.
allowed-tools
Read, Write, Edit, Glob, Grep
last_verified
2026-07-16
review_by
2027-06-22

External Purchases (US Web Checkout)

On the US storefront, apps may link out to a web checkout for digital goods using the StoreKit External Purchase Link entitlement — and as of mid-2026, court orders have Apple's commission on those purchases at 0%, with the fee case still moving through district court. This is the largest indie revenue unlock of the era, and it is reversible by a ruling — so the engineering rule is: ship it now, architect it so a commission can be flipped on later.

Verify current state before relying on this: the entitlement terms, the commission rate, and the litigation status have each changed more than once. Treat every number here as "true as of 2026-07, re-check."

When This Skill Activates

  • "Add a web checkout / Stripe / external purchase link" for digital goods
  • Deciding IAP vs web checkout for a US-heavy revenue base
  • The store-growth audit flags P8.4
  • Reviewing an app whose external links might be non-compliant (wrong storefront, no entitlement)

The rules of the road

  • US storefront only — elsewhere Guideline 3.1.1 still applies (EU/JP/KR have separate entitlements/terms; don't extrapolate from the US).
  • Entitlement required: com.apple.developer.storekit.external-purchase-link + matching Info.plist declaration — a bare Link("Buy", …) without it is still a rejection (see app-store/rejection-handler §3.1.1).
  • Present the link per the entitlement's UI terms (StoreKit's ExternalPurchaseLink / disclosure sheet where required). Don't dark-pattern the IAP option away if you keep both.
  • Purchases made on the web are your customer relationship — payment processor, refunds, taxes; Apple's merchant-of-record role no longer applies.
Show full SKILL.md (219 more words)Show less

Architecture: the commission flip

Design so that a future "Apple takes N% of external purchases initiated in-app" ruling changes a config value, not your codebase:

  • ✅ Route every in-app-initiated web checkout through one link-out service that stamps the session (source=app, timestamp, storefront) — web-organic checkouts stay unstamped. If a commission returns, it applies to a knowable, logged subset.
  • ✅ Keep a single CommissionPolicy (remote-configurable): rate, applies_to, effective_date. Report/accrue against it from day one — at 0% it's just a counter.
  • ✅ Log day-one analytics: link taps → checkout starts → completions, vs the IAP funnel. The conversion drop through a web checkout (Apple's sheet, Safari hop, payment form) is real; whether 0% beats IAP's frictionless 85–70% is an empirical per-app question.
  • ❌ Scattering openURL("https://…/buy") calls through features — un-auditable, un-flippable.
  • ❌ Ripping out StoreKit. Keep IAP as a fallback path (non-US storefronts still need it, and some US users convert better in-sheet).

Decision sketch

SituationLean
Subscriptions, US-heavy, ARPU high enough to absorb processor fees + your own supportWeb checkout for new subs; keep IAP for the rest of world
Impulse-priced consumables/unlocksIAP — checkout friction eats more than 15–30% commission
Existing subscriber base on IAPDon't force-migrate; offer web at renewal decision points
B2B/prosumer, invoicing needsWeb checkout regardless of commission math

Output Format

Status: entitlement present? · storefront scope correct (US-only gating)? ·
link-out service centralized? · CommissionPolicy flippable? · funnel analytics live?
Verdict + the one next step.

References

© rshankras, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/monetization/external-purchases of rshankras/claude-code-apple-skills.

Open the folder on GitHubat commit 9ffb831

Compare with similar skills

External Purchases 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.

External Purchases compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
External Purchases this skillrshankras/claude-code-apple-skills785—~1.1kAutomated safety check: PassMIT
Pricing Strategyfreekmurze/dotfiles1k18 repos~1.6kAutomated safety check: PassNone
Profit Margin Calculator Amazonnexscope-ai/eCommerce-Skills1.1k—~1.7kAutomated safety check: PassMIT
Niche Opportunity Finderzanecole10/software-tailor-skills104—~4.2kAutomated safety check: PassNone
Pricing Strategyalirezarezvani/claude-skills28k1 repos~3.5kAutomated safety check: PassMIT
Software Pricing Calculatorzanecole10/software-tailor-skills104—~3.7kAutomated safety check: PassNone

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Questions about External Purchases

What does External Purchases do?

US web checkout via the StoreKit External Purchase Link entitlement — currently 0% Apple commission (litigation ongoing), how to ship it safely, and how to architect for a commission flip so a…. External Purchases is an agent skill from rshankras/claude-code-apple-skills. US web checkout via the StoreKit External Purchase Link entitlement — currently 0% Apple commission (litigation ongoing), how to ship it safely, and how to architect for a commission flip so a future ruling is a config change, not a rewrite.

When should I use External Purchases?

External Purchases fits situations like: adding external purchase links; weighing web checkout vs IAP; planning US-storefront pricing strategy.

How do I install External Purchases in Claude Code?

Run `npx skills add rshankras/claude-code-apple-skills --skill external-purchases -a claude-code`. Or copy the skill folder (skills/monetization/external-purchases in rshankras/claude-code-apple-skills) into .claude/skills/external-purchases in your project. Claude Code loads it when a task matches its description.

How do I install External Purchases in Codex?

Run `npx skills add rshankras/claude-code-apple-skills --skill external-purchases -a codex`. Or copy the skill folder (skills/monetization/external-purchases in rshankras/claude-code-apple-skills) into .agents/skills/external-purchases in your project. Codex loads it when a task matches its description.

Can I use External Purchases 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 rshankras/claude-code-apple-skills --skill external-purchases -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/external-purchases, .gemini/skills/external-purchases, .github/skills/external-purchases and .opencode/skills/external-purchases in your project.

What does External Purchases need to run?

SKILL.md names no scripts, command-line tools or credentials: External Purchases is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit, Glob, Grep.

Does External Purchases access the network?

SKILL.md names 1 domain. As links in the text: developer.apple.com. This is read from the text; nothing was executed.

Is External Purchases 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 External Purchases use?

External Purchases is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does External Purchases use?

About 1.1k tokens (SKILL.md is roughly 4.4k 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 External Purchases?

Skills that share tags, products or a category with External Purchases: Pricing Strategy (freekmurze/dotfiles, 1k stars), Profit Margin Calculator Amazon (nexscope-ai/eCommerce-Skills, 1.1k stars), Niche Opportunity Finder (zanecole10/software-tailor-skills, 104 stars) and Pricing Strategy (alirezarezvani/claude-skills, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains External Purchases?

rshankras (a GitHub user) maintains it in rshankras/claude-code-apple-skills, which has 785 GitHub stars. The repository holds 41 skills in this directory. The repository was last updated on July 24, 2026.

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