# Build a semantic layer for agentic AI with EDB Postgres AI and Amazon Bedrock AgentCore

- Source: AWS Machine Learning Blog
- Published: 2026-11-03T16:41:13.000Z
- Bad Influence: https://badinfluence.news/items/by1y1m6wcjv8w39a3y4gzm4hc
- Original: https://aws.amazon.com/blogs/machine-learning/build-a-semantic-layer-for-agentic-ai-with-edb-postgres-ai-and-amazon-bedrock-agentcore/

## Summary

This AWS post shows how to build a semantic layer inside EDB Postgres AI and expose it to an agent on Amazon Bedrock AgentCore through the AIDB MCP endpoint. Business meaning comes from COMMENT ON statements and foreign keys, and access is enforced by Postgres GRANT and row-level security. The authors report that a column comment changes the top-customer answer from about $502,529 to $27,991.66 for the same model and prompt.