Google Cloud releases MCP Toolbox Java SDK 1.0 with type-safe enterprise agent data access and authentication controls

What changed

Google Cloud announced MCP Toolbox Java SDK 1.0 on October 7. The SDK brings type-safe access to MCP Toolbox data tools into enterprise Java agent applications, with default parameters, pruning of server-bound sensitive parameters from public tool definitions, MCP version and session tracking, custom enterprise headers, and a pluggable CredentialsProvider. Google also provides Spring Boot and LangChain4j integration guidance and warns against exposing credentials over unsecured HTTP.