Show HN: Strata – an expressive semantic layer that can say no to your LLM

Ajo has created Strata, a full-stack solution for semantic layers that can be used with Large Language Models (LLMs). Strata includes a semantic layer, dashboards, subscriptions, and Google Sheets exports, and can be used through an agent conversation or Multi-Client Protocol (MCP). It features strict naming conventions, automatic data blending, partition and aggregate-aware semantic routing, and complex measures. Strata is not a traditional semantic layer that connects to Business Intelligence (BI) tools, but rather provides APIs and MCP for customization. The free tier includes up to 25 users and can be run on a single machine with Docker.