Show HN: 2-command CLI to give AI agents structured data retrieval on PostgreSQL

Category: library

Tags: ai-agents, postgresql, mcp-server, ltree, typescript, structured-data, versioning

Score: 7.3/10 (Innovation: 6, Technical: 8, Documentation: 8, Utility: 7)

Lithium is a TypeScript storage engine for AI agents that provides hierarchical, versioned, and scoped data retrieval on top of PostgreSQL using ltree indexes. It wraps Postgres's native tree capabilities into a clean MCP-compatible API, making it a practical alternative to graph or vector databases for structured AI data needs.

Target audience: backend devs, AI engineers, data engineers

Repository: https://github.com/0xJaksun/lithium-core · TypeScript · MIT · 9 stars

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