APIs are often challenging for users, but companies like ReadMe aim to simplify them through better documentation and user understanding. Many companies treat APIs as secondary to their main product, resulting in insufficient attention to user needs. Effective API design requires empathy and understanding of users' perspectives, as demonstrated by examples like Slack, which prioritized user interest when developing their platform, and the Star Wars API, which eliminated unnecessary authentication for easier access. Clearbit offers user-friendly guides and integration suggestions, showcasing the benefits of understanding API use cases. The growing number of APIs since 2008 and increasing competition emphasize the importance of user-centered design, where the API itself serves as a user interface. Traditionally, companies design APIs based on their internal architecture, often leading to complex and resource-intensive systems. A user-centered approach instead prioritizes understanding potential use cases, aligning with core product strategies, and making informed decisions about API development. This method, as seen with Foursquare's evolution, results in targeted experiences and more efficient, user-friendly APIs, reducing the need for extensive documentation and support while enhancing user satisfaction.