What Is an Agentic Semantic Layer?

A semantic layer solves data inconsistency by defining metrics once, preventing conflicting results from different queries. An agentic semantic layer specifically serves programmatic consumers like LLMs, AI agents, and SDKs, rather than human analysts. It acts as a metadata layer between agents and data warehouses, enforcing access control and governed interfaces. By using protocols like MCP or REST APIs, agents retrieve uniform answers based on centralized business logic instead of interpreting raw SQL independently.