Discover, share, and depend on typed ontologies, taxonomies, and schemas built with the Xeto type system. Like npm, but for structured data models.
The most downloaded and depended-upon Xeto libraries
Xeto is a typed data language for defining ontologies, taxonomies, and data schemas. Think of it like JSON Schema, but with a rich type system, inheritance, and the ability to link specs together into semantic ontology graphs. Libraries in xeto.dev can store building automation data, UI component definitions, CMS content models, and scientific taxonomies.
A complete ecosystem for Xeto type development
Publish and consume Xeto libraries with semantic versioning. Pin exact versions or follow semver ranges.
Specs can reference and extend one another across libraries, forming rich semantic ontology graphs.
Declare library dependencies and let xeto.dev resolve the full transitive graph automatically.
Search by spec name, category, tag, or even spec shape. Find exactly what you need, fast.
Official SDKs for Java, Python, JavaScript, and TypeScript. Use Xeto types natively in your stack.
First-class support for building automation ontologies — HVAC, lighting, sensors, and more.
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