Malloy [1] has a semantic layer [2]... and Model Context Protocol (MCP) support is being added through Publisher [3]. Something to keep an eye on. Seems like a great fit for LLMs.

[1] https://www.malloydata.dev/ [2] https://docs.malloydata.dev/documentation/user_guides/malloy... [3] https://github.com/malloydata/publisher