langchain-ai/langchain-postgres

A suite of tools to develop RAG, semantic search, and other AI applications more easily with PostgreSQL

The way we interact with our data is changing.

pg0 - Zero-config PostgreSQL with pgvector

Integrations between MongoDB, Atlas, LangChain, and LangGraph

Full-text and semantic search on any Postgres

An MCP server to query any Postgres database in natural language.

Database Package Registry for Postgres

Established strong JEV based natural language to SQL performance and well-covered semantic operators for PostgreSQL(PG) with optimized cost and latency. Reusable evidence, with native execution, parallel plans and explainable embeddings in development preview.

XiYanSQL models for Text-to-SQL.