---
lang: en
title: 'API docs: core.application.setmetadata'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/core
permalink: /doc/en/lb4/apidocs.core.application.setmetadata.html
---

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[Home](./index.md) &gt; [@loopback/core](./core.md) &gt; [Application](./core.application.md) &gt; [setMetadata](./core.application.setmetadata.md)

## Application.setMetadata() method

Set application metadata. `@loopback/boot` calls this method to populate the metadata from `package.json`<!-- -->.

**Signature:**

```typescript
setMetadata(metadata: ApplicationMetadata): void;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  metadata | [ApplicationMetadata](./core.applicationmetadata.md) | Application metadata |

**Returns:**

void