App Store Connect API Development

Quick Reference

Base URL: https://api.appstoreconnect.apple.com/
Auth: JWT with ES256 signature (max 20 min lifetime)
Format: JSON:API specification

Authentication

Generate JWT with these claims:

{
  "iss": "ISSUER_ID",      // From App Store Connect
  "iat": <unix_timestamp>,
  "exp": <iat + 1200>,     // Max 20 minutes
  "aud": "appstoreconnect-v1"
}