Cube
Open source semantic layer that defines metrics once and serves them to BI tools, applications and AI agents over SQL and APIs.
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About Cube
Cube is an open source semantic layer that enables developers to define business metrics once and serve them across multiple platforms. It connects to data warehouses and databases to provide a unified business logic layer, allowing the same metrics and definitions to be consistently accessed through SQL, APIs, and various interfaces. Developers use Cube to build business intelligence systems, embedded analytics in applications, and AI-powered analytics features that work with AI agents and language models.
The semantic layer approach allows teams to centralize metric definitions and governance rules, so all downstream consumers - whether analytics tools, applications, or AI systems - work from the same trusted source of truth. Cube is built by cube-js and is open source, available for developers to self-host and integrate into their data stacks and products.
Checked 28 October 2026.
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