Cube
An open-source semantic layer that defines metrics and joins once and serves them through SQL, REST, and GraphQL APIs, with a MySQL driver among its data sources.
Cube Core lets you define metrics, dimensions, joins, and access rules in code, then exposes them to BI tools, embedded analytics, and AI agents. It works with SQL data sources including MySQL.
The backend is released under the Apache 2.0 license and the client under MIT, and Cube also sells a commercial cloud platform.
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