Shen Jiayun developed a modular Third-Party Service Evaluator Framework for the coze-dev/coze-loop repository, focusing on extensible evaluation of external services and safer experiment execution. The framework supports CRUD operations, runtime configuration, and custom RPC evaluators, integrating seamlessly with existing experiment configurations while maintaining backward compatibility. Shen enhanced data models and improved the consistency of evaluator versioning across requests and DTOs. Using Go, gRPC, and unit testing, Shen expanded test coverage and addressed reliability concerns, such as evaluation timeouts and CI lint issues. The work emphasized maintainability and stability, delivering business value through configurable and reliable backend service integration.