Hacker NewsI built pg-mcp, a Model Context Protocol (MCP) server for PostgreSQL that provides structured schema inspection and query execution for LLMs and agents. It's multi-tenant and runs over HTTP/SSE (not stdio)
Features - Supports multiple database connections from multiple agents
- Schema Introspection: Returns table structures, types, indexes and constraints; enriched with descriptions from pg_catalog. (for well documented databases)
- Read-Only Queries: Controlled execution of queries via MCP.
- EXPLAIN Tool: Helps smart agents optimize queries before execution.
- Extension Plugins: YAML-based plugin system for Postgres extensions (supports pgvector and postgis out of the box).
- Server Mode: Spin up the container and it's ready to accept connections at http://localhost:8000/sse
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