Worked on the UKGovernmentBEIS/inspect_ai repository to deliver a targeted compatibility fix addressing Cache-Control handling for Bedrock and Vertex providers. The solution introduced logic in Python to bypass unsupported top-level cache_control fields for these services, preventing runtime errors while preserving per-block cache behavior for other providers. This approach stabilized Anthropic-on-Bedrock workflows and improved deployment reliability for upstream consumers. The work included developing regression tests to validate the new gating logic and resolving mypy type-safety issues in test signatures, enhancing CI reliability. Collaboration with other contributors ensured the feature gating aligned with project standards, demonstrating strong API development and testing skills.