Developed JSON-based message retrieval enhancements for the AgentRun class in the pydantic/pydantic-ai repository, focusing on backend development and unit testing using Python. Introduced new methods to fetch all messages and new messages in JSON format, streamlining integration, auditing, and analytics workflows. The implementation centered on API design and data handling, reducing the need for client-side parsing and supporting more efficient downstream message processing. Work was delivered through a dedicated pull request and commit, with collaborative input from another contributor. No major bugs were reported, and efforts were concentrated on establishing a robust foundation for future feature expansion.