app-store

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

Every response is { "status": number, "message": string, "data": ... }; the HTTP status mirrors status.

Endpoints (9 — all GET, $0.003/call)

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:

Japanese storefront search:

An app's full details, then reviews sorted by helpfulness:

Apps similar to a given app:

Search and fetch app bundles:

A developer's full app catalog:

MCP

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 key
• 402 — payment required (x402 challenge) or topup_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