One of the most challenging APIs in recent times has been the Facebook Graph API. Changes in data privacy practices and compliance with regulations such as GDPR have led to frequent updates and restrictions on what data is accessible and how it can be used. These updates often occur with relatively short notice, which can disrupt applications relying on specific features. Additionally, the complexity of managing tokens and permissions for different user data access requires careful implementation and monitoring. Developers have to adapt quickly to API deprecations and version changes, which can be unpredictable and often result in substantial rework to maintain application functionality.