Kimitaka developed and documented the cacheRetention parameter for Anthropic API calls in the openclaw/openclaw repository, focusing on standardizing prompt caching behavior. By introducing this feature, Kimitaka improved API predictability and reduced caching-related inconsistencies for developers integrating with Anthropic. The work included comprehensive Markdown documentation, usage examples, and default configurations, ensuring clear onboarding and consistent implementation. Kimitaka demonstrated skills in API design and technical writing, emphasizing changelog hygiene and example-driven guidance. While the contribution was limited to a single feature over one month, the depth of documentation and attention to integration details provided lasting value for the project’s maintainability.