Show HN: Strata – an expressive semantic layer that can say no to your LLM
Strata is a new developer tool that provides a semantic layer for LLMs, allowing users to manage data warehouses locally. It features a Docker-based server and a CLI for project initialization and warehouse connectivity.
Why it matters
It offers a technical solution for developers looking to integrate LLMs with private data warehouses while maintaining local control and security.
15 minutes from setup to insights. Free plan, no credit card, everything runs locally.
You need Docker, Ruby 3.4.4 or newer, Git, and read access to a warehouse. A coding agent such as Claude Code or Codex does the modeling for you.
Strata Server runs in Docker with its own bundled database, so there is nothing to configure. Need Docker? Get Docker Desktop .
Run this in a terminal and press Enter to accept the default port:
curl -fsSL https://strata.do/server/install.sh | bash Copy It checks Docker, pulls the image, starts the container, and waits until it is healthy. Then open http://localhost:8080 and create your admin account. Your free trial activates on its own, and a TPC-DS retail sample model is already loaded, so you can explore before connecting anything.
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