Vertex AI's Reasoning Engine gains two significant methods: ingestEvents for Memory Banks and retrieveProfiles for memories, facilitating more sophisticated long-term state management for AI agents. On the Vector Search side, mutateDeployedIndex now supports an updateMask, allowing for partial updates to automatic_resources, dedicated_resources, and access_logging without requiring a full resource update.
Breaking Changes: Developers should note the removal of maxTotalTokens from AgentInteraction. Additionally, the fields contentList, stringResult, and structResult have been removed from FunctionResultDelta, FunctionResultStep, McpServerToolResultDelta, and McpServerToolResultStep. This indicates a significant shift in how tool and function results are structured in streaming and step-based agent interactions.
