---
title: JSON Schema
description: The machine-readable schema of an OWLF document.
---

Download [schema/0.1.json](/schema/0.1.json) (JSON Schema draft 2020-12). Point a document at it for editor validation:

```json
{ "$schema": "https://owlf.org/schema/0.1.json", "owlf": "0.1" }
```

The schema checks structure. References and calendar dates need `validateDocument` from `@owlf/core`, which also exports the schema as `documentJsonSchema()` and as a zod schema, `documentSchema`.

The [specification](/reference/specification) governs if the schema and the text conflict.