---
lang: en
title: 'API docs: repository-json-schema.json_schema_key'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.repository-json-schema.json_schema_key.html
---

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[Home](./index.md) &gt; [@loopback/repository-json-schema](./repository-json-schema.md) &gt; [JSON\_SCHEMA\_KEY](./repository-json-schema.json_schema_key.md)

## JSON\_SCHEMA\_KEY variable

Metadata key used to set or retrieve repository JSON Schema

<b>Signature:</b>

```typescript
JSON_SCHEMA_KEY: MetadataAccessor<{
    [key: string]: JSONSchema;
}, ClassDecorator>
```

