Charles is a HTTP proxy that enables you to see traffic between your machine and the backend

LangSmith Observability gives you complete visibility into agent behavior with tracing, real-time monitoring, alerting, and high-level insights into usage.

AI-powered end-to-end testing lets teams of all skill levels—whether they code or not—integrate functional, visual, and API testing to streamline critical test flows. Create, run, and maintain robust tests that validate more in less time.

The Complete Continuous Testing Platform Any test. Any device. App quality without limits.

Datadog is a cloud-based monitoring and analytics platform that provides observability and security for cloud-scale applications

Real API Design-first Development Platform Design. Debug. Test. Document. Mock. Build APIs Faster & Together.