Worked on the harness/harness repository to enhance artifact upload authorization error handling by implementing HTTP 403 response headers for failed authorization attempts. This update provided API consumers with clearer, more informative feedback when lacking sufficient permissions, directly addressing business needs for improved error clarity and security. The solution was anchored to AH-1806 and delivered through PR #4450, ensuring traceability and streamlined validation. Leveraging Go for backend and API development, the work focused on robust error handling and access control. The feature improved the security posture of artifact uploads while supporting maintainable, transparent communication between backend services and API consumers.