GoogleCloudPlatform/cymbal-air-toolbox-demo

The application implements agent-based orchestration via LangGraph where the LLM dynamically selects from discrete database tools rather than following static chains, improving tool invocation success. It uses MCP Toolbox as a secure, scalable middleware layer that handles authentication, connection pooling, and abstracts database operations—supporting pluggable databases (Firestore, Spanner, PostgreSQL) through a unified `tools.yaml` configuration. Grounding responses with RAG over actual flight, amenity, and terminal data reduces hallucinations while keeping sensitive information out of model context.

318 stars.