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

Strata is an expressive semantic layer designed to interact with LLMs, allowing AI agents to query its API for grain-safe answers. It supports various data warehouses and databases, including Snowflake, Databricks, PostgreSQL, Redshift, MySQL, SQL Server, ClickHouse, Athena, Trino, Druid, DuckDB, and SQLite. Users can configure connections by providing details such as account identifiers, hosts, ports, databases, schemas, usernames, passwords, and personal access tokens, with support for different authentication modes like PAT, key pair, and OAuth.