Worked on the vast-ai/vast-cli repository to deliver Instances API Version 2, introducing pagination, filtering, and sorting to support scalable data retrieval and richer client-side queries. The approach emphasized robust API design and versioning, using OpenAPI Specification and YAML to define endpoints and ensure clear documentation. Managed the migration path by adding a breaking-change notice for the deprecated endpoint and updating related documentation, reducing friction for users. Collaborated cross-functionally to coordinate changes, communicated deprecation risks through changelogs, and maintained a focus on developer experience. No major bugs were addressed, with efforts concentrated on feature delivery and risk-managed API evolution.