class MMAPIError(Exception):
    """Base exception for all Magnit Market API errors."""
    pass

class MMAuthError(MMAPIError):
    """Raised when authentication fails (HTTP 401 or 403)."""
    pass

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

class MMBadRequestError(MMAPIError):
    """Raised when API returns HTTP 400 (Bad Request)."""
    pass

class MMNotFoundError(MMAPIError):
    """Raised when API returns HTTP 404 (Not Found)."""
    pass