What is appstore-revenuecat-sync?

A reconciliation workflow for matching App Store Connect, Apple's app-management service, with RevenueCat, a subscription-management service. It compares products, entitlements, offerings, and packages using product IDs.

Use it to audit subscription and in-app-purchase catalogs, prepare approved updates, and verify the resulting App Store Connect and RevenueCat configuration.

It exposes missing items and conflicting mappings between the two systems before changes are made. The workflow starts read-only and does not delete resources.

appstore-revenuecat-sync — Skill for Claude Code and Codex by Xopoko

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.

Any agent

npx skills add Xopoko/build-swift-apps --skill appstore-revenuecat-sync

Clone the repo

git clone --depth 1 https://github.com/Xopoko/build-swift-apps

Made for: Claude Code, Codex.

Or install build-swift-apps, the plugin that ships this one along with the rest of its 61 skills, 3 commands, 3 MCP servers.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/xopoko/build-swift-apps/appstore-revenuecat-sync/github.svg)](https://agentmods.dev/skills/xopoko/build-swift-apps/appstore-revenuecat-sync)

Your own site

<a href="https://agentmods.dev/skills/xopoko/build-swift-apps/appstore-revenuecat-sync"><img src="https://agentmods.dev/badge/skills/xopoko/build-swift-apps/appstore-revenuecat-sync/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/xopoko/build-swift-apps/appstore-revenuecat-sync"><img src="https://agentmods.dev/badge/skills/xopoko/build-swift-apps/appstore-revenuecat-sync.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 836 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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 5.1	$0.00047	$0.00836
Opus 5	$0.00023	$0.00418
Sonnet 5	$0.00009	$0.00167
Haiku 4.5	$0.00005	$0.00084

Measured 11d ago against content hash 5e22a178ae82, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

appstore-revenuecat-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 11d 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.

skills/appstore-revenuecat-sync/SKILL.md · 71 lines

How it starts

The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.

App Store RevenueCat Sync

Start read-only, build a diff, then create/update only after explicit confirmation. Never delete resources in this workflow.

Preconditions

asc auth configured.
RevenueCat MCP configured/authenticated; write-enabled API v2 key for apply.
Known APP_ID, RevenueCat project_id, target app type (app_store or mac_app_store), and bundle ID for create flows.

Canonical key: ASC productId == RevenueCat store_identifier. Never use display names as unique IDs.

Modes

Audit: read ASC + RevenueCat, find missing resources and conflicts, present plan.
Apply: after approval, ensure ASC items, RevenueCat app/products, entitlements/attachments, offerings/packages, then verify.

Read Sources

asc subscriptions groups list --app "APP_ID" --paginate --output json
asc iap list --app "APP_ID" --paginate --output json
asc subscriptions list --group-id "GROUP_ID" --paginate --output json

RevenueCat MCP tools: mcp_RC_get_project, mcp_RC_list_apps, mcp_RC_list_products, mcp_RC_list_entitlements, mcp_RC_list_offerings, mcp_RC_list_packages with pagination.

Type mapping:

subscription -> subscription
CONSUMABLE -> consumable
NON_CONSUMABLE -> non_consumable
NON_RENEWING_SUBSCRIPTION -> non_renewing_subscription

Entitlement defaults: one per subscription group, one per non-consumable, none for consumables unless requested.

Apply Order

Create missing ASC resources, then re-read ASC to get canonical IDs:

asc subscriptions groups create --app "APP_ID" --reference-name "Premium"
asc subscriptions create --group-id "GROUP_ID" --reference-name "Monthly" --product-id "com.example.premium.monthly" --subscription-period ONE_MONTH
asc iap create --app "APP_ID" --type NON_CONSUMABLE --ref-name "Lifetime" --product-id "com.example.lifetime"

Ensure RevenueCat app/products with mcp_RC_create_app and mcp_RC_create_product; set store_identifier to ASC productId.
Ensure entitlements and product attachments with mcp_RC_create_entitlement, mcp_RC_attach_products_to_entitlement, and verify with mcp_RC_get_products_from_entitlement.
Optional offerings/packages: mcp_RC_create_offering, mcp_RC_update_offering, mcp_RC_create_package, mcp_RC_attach_products_to_package using eligibility_criteria: "all".

Read the full file on GitHub · 71 lines

Files

What ships with it

3 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.

11d ago First seen · 71 lines · 47 tokens per session scan A 5e22a178ae82

Subscribe to this mod's changes

appstore-revenuecat-sync is a skill published in the GitHub repository Xopoko/build-swift-apps (45 stars, last pushed 14d ago), licensed MIT. It adds 47 tokens to every session and 836 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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