Worked on the pydantic/pydantic-ai repository to enhance reliability in Agent-to-Agent (A2A) file uploads by addressing a base64 decoding issue. Implemented a fix ensuring that image and file data are properly decoded before processing, which improved data integrity and reduced upload-related failures. Expanded the automated test suite to cover the new decoding logic, increasing confidence in file handling workflows. Collaborated with other contributors and integrated changes through a structured pull request process. Utilized Python for backend development, focusing on API reliability and robust testing practices. The work resulted in more stable cross-agent communications and streamlined debugging for file uploads.