Developed an API performance benchmarking framework for the boxyhq/jackson repository, focusing on core integrations such as SSO, Directory Sync, and SCIM endpoints. Leveraged JavaScript and k6 to create load testing scripts that measure and validate the performance characteristics of these critical integration points. Documented the setup process and benchmark results in a comprehensive README, enabling teams to establish measurable baselines and follow a clear validation workflow. This work provided enhanced visibility into integration performance, supporting data-driven optimization and capacity planning for production workloads. The approach emphasized maintainability and reproducibility, ensuring ongoing support for service level objectives and operational reliability.