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---
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
---
<!-- Do not edit this file. It is automatically generated by API Documenter. -->
[Home](./index.md) > [@loopback/core](./core.md) > [Application](./core.application.md) > [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
<table><thead><tr><th>
Parameter
</th><th>
Type
</th><th>
Description
</th></tr></thead>
<tbody><tr><td markdown="1">
metadata
</td><td markdown="1">
[ApplicationMetadata](./core.applicationmetadata.md)
</td><td markdown="1">
Application metadata
</td></tr>
</tbody></table>
**Returns:**
void