ottr — a Claude skill for OTTR & stOTTR

A skill that teaches Claude to read and write OTTR templates and instances in stOTTR (terse) syntax — the language for capturing reusable RDF/OWL modelling patterns as parameterised graphs.

What it covers

• Core OTTR concepts: templates, instances, nesting, design/content separation
• The complete stOTTR grammar: signatures, parameters, types, instances, terms
• Parameter modifiers (? optional, ! non-blank), default values
• Types: List<>, NEList<>, LUB<>, and the default Top
• List expanders: cross, zipMin, zipMax (with ++)
• Annotations (@@), base templates (:: BASE), comments
• A condensed grammar reference and a common-mistakes list

Usage

Place the ottr folder among your Claude skills. It activates automatically when you work with OTTR templates, .stottr files, ottr:Triple, list expanders, or ask how to turn an RDF/OWL pattern into a reusable template.

ex:Person [ ottr:IRI ?id, xsd:string ?name, xsd:int ?age ] :: {
    ottr:Triple(?id, rdf:type,   ex:Person),
    ottr:Triple(?id, rdfs:label, ?name),
    ottr:Triple(?id, ex:age,     ?age)
} .

ex:Person(ex:alice, "Alice", 34) .

Pairs naturally with the maplib skill, which expands stOTTR templates over Polars DataFrames in Python.

References

• stOTTR specification — https://spec.ottr.xyz/stOTTR/
• OTTR framework & specs — https://spec.ottr.xyz/
• OTTR homepage — https://ottr.xyz/
• maplib — https://github.com/DataTreehouse/maplib

License

See the repository for license details.