class AEAPIError(Exception):
    """Base exception for all AE Platform API errors."""
    pass

class AEAuthError(AEAPIError):
    """Raised when authentication fails (HTTP 401 or 403)."""
    pass

class AERateLimitError(AEAPIError):
    """Raised when API rate limits are exceeded (HTTP 429)."""
    pass

class AEBadRequestError(AEAPIError):
    """Raised when API returns HTTP 400 or 422."""
    pass

class AENotFoundError(AEAPIError):
    """Raised when API returns HTTP 404."""
    pass