Security and Best Practices

Never store access tokens or private keys in client-side or web-facing code
All API calls must use HTTPS
Revoke compromised tokens using DELETE /auth/revokeAccessToken
Use dedicated binary endpoints (/seller/v2/content/binary) instead of contentUpdate for binary operations (the legacy binaryList parameter in contentUpdate will stop working July 2026)
Handle error codes appropriately (400 for bad parameters, 401 for authorization issues, 403 for permission/ownership errors)

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