API logs serve as comprehensive records of interactions between different services, documenting requests and responses to provide insights into API operations. These logs capture details such as endpoints accessed, request methods, timestamps, headers, and response status codes, which can be used for debugging, performance monitoring, and understanding user interactions. Logs are typically categorized into access, error, security, and performance logs, each serving a unique purpose in maintaining API health and efficiency. Tools like ELK Stack, Datadog, Sentry, and Axiom are employed to collect and process API logs, offering features such as real-time processing, visualization, and analytics to enhance log management. Merge, a leading unified API solution, not only facilitates multiple integrations through a single API but also provides searchable logs and automated alerts, helping teams reduce the time and resources spent on maintaining logging infrastructure.