Worked on the spring-ai repository to deliver a feature enhancement enabling support for base64-encoded images in tool call results. Focused on backend development using Java and Spring Boot, the implementation updated McpToolUtils to parse JSON structures containing base64 image data and modified DefaultToolCallResultConverter to encode RenderedImage objects as base64 PNGs. This approach allowed tool call results to include richer, self-contained image data, improving both presentation and downstream rendering. Comprehensive unit and integration tests were added to validate the image conversion process, ensuring robust handling of image data within tool outputs and enhancing the overall data interchange capabilities of the system.