This document discusses API design collaboration and proposes a solution to common problems that occur when teams design APIs in silos. The proposed solution standardizes API design templates, implements a design gap detector and centralized user management. It also automates the generation of API stubs, test cases and pipelines to enable early validation of API contracts across environments. This facilitates more automated collaboration, reduces delays and production fixes, and makes troubleshooting easier through blameless culture adoption and transparency across the end-to-end process.