During May 2026, contributed to the keephq/keep repository by enhancing the Anthropic provider integration. Developed features enabling users to select Claude models, customize system prompts, and validate API key scopes, all aimed at improving flexibility, usability, and security. Focused on robust API development and data validation using Python, with careful attention to error handling to reduce misconfiguration and failed requests. These enhancements established a foundation for broader Claude model support and safer API usage. The work demonstrated depth in backend engineering, emphasizing maintainable code and thoughtful validation logic to support targeted model usage and prompt customization within the platform.