How to use
- Copy the installation command and review the source package before installing it in your own agent environment.
- Check the source document for required tools, credentials and supported hosts.
- Describe your input and desired deliverable; review the output against the source material.
npx skills add https://github.com/fetcher-sh/fetcher-skills --skill app-storeBefore you start
- Installation does not include a model subscription, API allowance or permission to access your files.
- Repository stars and installation counts describe activity, not an independent quality or security test.
Rendered from the source repository. Headings, examples, code, tables, links, and referenced images are preserved.
Apple App Store API
App Store app and bundle search, details, reviews, similar-apps, and developer catalogs across any country storefront — one plain HTTP GET per call, paid as you go. No Apple Developer Program membership, no App Store Connect access, no scraping the storefront HTML.
Base URL: https://appstore.fetcher.sh
Authentication
Two ways to pay, same data — full mechanics in the `fetcher` skill:
# 1. Prepaid credits (recommended — get a key at https://fetcher.sh/topup
# or via POST /api/credits/topup, see the fetcher skill)
export FETCHER_API_KEY="bby_live_xxxxxxxxxxxx"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://appstore.fetcher.sh/api/apps?term=meditation"
# 2. x402 pay-per-call — omit the header; a GET with no payment returns 402
# with machine-readable payment requirements (USDC on Base, Polygon,
# Arbitrum, Monad, or Solana). @x402/fetch signs and retries automatically.Every response is { "status": number, "message": string, "data": ... }; the HTTP status mirrors status.
Endpoints (9 — all GET, $0.003/call)
| Endpoint | What it returns |
|---|---|
/api/apps | Apps matching a keyword; page and country storefront filters |
/api/apps/{appId} | An app's full details |
/api/apps/{appId}/reviews | An app's reviews |
/api/apps/{appId}/similar | Apps similar to a given app |
/api/bundles | App bundles matching a keyword |
/api/bundles/{bundleId} | A bundle's full details |
/api/bundles/{bundleId}/reviews | A bundle's reviews |
/api/bundles/{bundleId}/similar | Bundles similar to a given bundle |
/api/developers/{developerId} | A developer's full app catalog |
Required on /api/apps and /api/bundles: term. Optional everywhere: country (storefront, e.g. us, jp, de), lang, page. Reviews support sort (recent, helpful).
Scenarios
US storefront search:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "term=habit tracker" -G \
--data-urlencode "country=us" \
"https://appstore.fetcher.sh/api/apps"Japanese storefront search:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "term=camera" -G \
--data-urlencode "country=jp" \
"https://appstore.fetcher.sh/api/apps"An app's full details, then reviews sorted by helpfulness:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "country=us" -G \
"https://appstore.fetcher.sh/api/apps/324684580"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "country=us" -G \
--data-urlencode "sort=helpful" \
"https://appstore.fetcher.sh/api/apps/324684580/reviews"Apps similar to a given app:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "country=us" -G \
"https://appstore.fetcher.sh/api/apps/324684580/similar"Search and fetch app bundles:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "term=photo editing suite" -G \
"https://appstore.fetcher.sh/api/bundles"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "country=us" -G \
"https://appstore.fetcher.sh/api/bundles/1234567890"A developer's full app catalog:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://appstore.fetcher.sh/api/developers/284882218"MCP
{
"mcpServers": {
"app-store": {
"url": "https://appstore.fetcher.sh/mcp",
"headers": { "Authorization": "Bearer bby_live_..." }
}
}
}Free: search_endpoints, describe_endpoint, check_balance. Paid: fetch_data (any endpoint above), topup_credits, plus the named shortcut appstore_apps. Drop the headers block to pay per call with x402 instead — see the `fetcher` skill for the full flow.
Errors
400— missing/invalid parameter (message names it)401— unknown or rotated key402— payment required (x402 challenge) ortopup_required(credits
exhausted)
404— not a priced path- No rate limits; no refunds on upstream failures (settlement precedes
delivery)
Reference
- Full agent setup: <https://appstore.fetcher.sh/skill.md>
- OpenAPI 3.1 contract: <https://appstore.fetcher.sh/openapi.json>
- Condensed catalog: <https://appstore.fetcher.sh/llms.txt>
- Payment, credits, and MCP deep dive: `fetcher` skill
- Site: <https://appstore.fetcher.sh>

