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.
npx skills add Xopoko/build-swift-apps --skill appstore-release-notes-writergit clone --depth 1 https://github.com/Xopoko/build-swift-appsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/xopoko/build-swift-apps/appstore-release-notes-writer)<a href="https://agentmods.dev/skills/xopoko/build-swift-apps/appstore-release-notes-writer"><img src="https://agentmods.dev/badge/skills/xopoko/build-swift-apps/appstore-release-notes-writer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/xopoko/build-swift-apps/appstore-release-notes-writer"><img src="https://agentmods.dev/badge/skills/xopoko/build-swift-apps/appstore-release-notes-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00045 | $0.00738 |
| Opus 5 | $0.00023 | $0.00369 |
| Sonnet 5 | $0.00009 | $0.00148 |
| Haiku 4.5 | $0.00005 | $0.00074 |
Grade A, and why
appstore-release-notes-writer 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
App Store Release Notes Writer
Write human-focused release notes, optionally localized to every existing metadata locale.
Use appstore-metadata-sync for general listing metadata edits, appstore-metadata-localizer for full listing translation, and appstore-subscription-localizer for subscription/IAP display-name localization.
Preconditions
- Canonical metadata from
asc metadata pull --app "APP_ID" --version "1.2.3" --dir "./metadata"or user-provided keywords. - Auth configured for upload.
- Primary locale is
en-USunless specified. - Read
references/release_notes_guidelines.md. - Use highest semver under
metadata/version/; locales are the JSON files there.
Workflow
- Gather input:
- Git log:
git describe --tags --abbrev=0thengit log <tag>..HEAD --oneline --no-merges; remove merges/deps/CI/format noise. - User bullets or free text.
- If absent, ask what changed.
- Git log:
- Classify user-visible changes into
New,Improved,Fixed; omit empty sections. - Draft primary locale notes:
- lead with the clearest user-facing hook in the first ~170 chars;
- describe user impact, not implementation;
- use concrete action verbs;
- naturally echo relevant local keywords from
metadata/version/<version>/<locale>.jsonwhen present; - target 500-1500 chars, hard limit 4000.
- If requested, draft
promotionalText<= 170 chars. - Show draft with character count and wait for approval before localizing.
- Localize approved notes:
- formal/professional register and formal "you" where applicable;
- adapt idioms and tone to local market;
- echo locale-specific keywords naturally;
- validate What's New <= 4000 and promo <= 170; shorten, never truncate mid-sentence.
- Present a locale table with first 80 chars, counts, promo text/counts; wait for upload approval.
- Upload:
Include promo viaasc apps info edit --app "APP_ID" --version-id "VERSION_ID" --locale "en-US" --whats-new "..." asc metadata push --app "APP_ID" --version "1.2.3" --dir "./metadata" --dry-run asc metadata push --app "APP_ID" --version "1.2.3" --dir "./metadata"--promotional-textor writepromotionalTextinto canonical JSON before push.
What ships with it
2 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.
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.
- 10d ago First seen · 62 lines · 45 tokens per session scan A 6ed0fd947105
appstore-release-notes-writer is a skill published in the GitHub repository Xopoko/build-swift-apps (45 stars, last pushed 13d ago), licensed MIT. It adds 45 tokens to every session and 738 once invoked, about $0.0002 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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