asc-metadata-sync

asc-metadata-sync is a skill for Claude Code, Codex from Abdullah4AI/apple-developer-toolkit. It costs 44 tokens per session (1,331 once invoked), scanned A, original, MIT.

A workflow for keeping App Store Connect app descriptions, keywords, release notes, URLs, and translations aligned with local files. App Store Connect is Apple's service for managing apps submitted to its stores.

In plain words
What is it for?
Use it to download, validate, translate, migrate, and upload App Store metadata and localizations with the asc command-line tool.
Why use it?
It reduces manual copying and helps avoid mixing up release-specific text with app-wide information when updating languages.

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/abdullah4ai/apple-developer-toolkit/asc-metadata-sync
Any agent
npx skills add Abdullah4AI/apple-developer-toolkit --skill asc-metadata-sync
Clone the repo
git clone --depth 1 https://github.com/Abdullah4AI/apple-developer-toolkit

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for asc-metadata-sync

README.md
[![agentmods](https://agentmods.dev/badge/skills/abdullah4ai/apple-developer-toolkit/asc-metadata-sync.svg)](https://agentmods.dev/skills/abdullah4ai/apple-developer-toolkit/asc-metadata-sync)
Your own site
<a href="https://agentmods.dev/skills/abdullah4ai/apple-developer-toolkit/asc-metadata-sync"><img src="https://agentmods.dev/badge/skills/abdullah4ai/apple-developer-toolkit/asc-metadata-sync.svg" alt="Measured on agentmods" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,331 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.

ModelPer sessionOnce invoked
Fable 5 $0.00044 $0.01331
Opus 5 $0.00022 $0.00665
Sonnet 5 $0.00009 $0.00266
Haiku 4.5 $0.00004 $0.00133

Measured 4d ago against content hash df27fd4cb704, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

asc-metadata-sync 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 4d 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.

swiftship/internal/skills/data/features/asc-metadata-sync/SKILL.md · 168 lines

How it starts

The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.

asc metadata sync and localization

Use this skill to keep local metadata in sync with App Store Connect, and to translate metadata to multiple languages.

Command discovery

  • Always confirm flags with --help for the exact asc version.
  • Prefer explicit long flags (--app, --version, --version-id, --type, --app-info).
  • Default output is JSON; use --output table only for human verification steps.
  • Prefer deterministic ID-based operations.

Two Types of Localizations

1. Version Localizations (per-release)

Fields: description, keywords, whatsNew, supportUrl, marketingUrl, promotionalText

# List version localizations
asc localizations list --version "VERSION_ID"

# Download
asc localizations download --version "VERSION_ID" --path "./localizations"

# Upload from .strings files
asc localizations upload --version "VERSION_ID" --path "./localizations"

2. App Info Localizations (app-level)

Fields: name, subtitle, privacyPolicyUrl, privacyChoicesUrl, privacyPolicyText

# First, find the app info ID
asc app-infos list --app "APP_ID"

# List app info localizations
asc localizations list --app "APP_ID" --type app-info --app-info "APP_INFO_ID"

# Upload app info localizations
asc localizations upload --app "APP_ID" --type app-info --app-info "APP_INFO_ID" --path "./app-info-localizations"

Note: If you get "multiple app infos found", you must specify --app-info with the correct ID.

Legacy Metadata Format Workflow

Export current state

asc migrate export --app "APP_ID" --output "./metadata"

Validate local files

asc migrate validate --help

Import updates

asc migrate import --help

Quick Field Updates

Version-specific fields

asc app-info set --app "APP_ID" --locale "en-US" --whats-new "Bug fixes"
asc app-info set --app "APP_ID" --locale "en-US" --description "Your description"
asc app-info set --app "APP_ID" --locale "en-US" --keywords "keyword1,keyword2"
asc app-info set --app "APP_ID" --locale "en-US" --support-url "https://support.example.com"

Read the full file on GitHub · 168 lines

Files

What ships with it

1 file 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.

  1. 4d ago First seen · 168 lines · 44 tokens per session scan A df27fd4cb704

Subscribe to this mod's changes

asc-metadata-sync is a skill published in the GitHub repository Abdullah4AI/apple-developer-toolkit (10 stars, last pushed 3d ago), licensed MIT. It adds 44 tokens to every session and 1,331 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 2026-08-31.

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