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lang: en
title: 'API docs: rest.restserver._setupopenapispecendpoints'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/rest
permalink: /doc/en/lb4/apidocs.rest.restserver._setupopenapispecendpoints.html
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[Home](./index.md) > [@loopback/rest](./rest.md) > [RestServer](./rest.restserver.md) > [\_setupOpenApiSpecEndpoints](./rest.restserver._setupopenapispecendpoints.md)
## RestServer.\_setupOpenApiSpecEndpoints() method
Mount /openapi.json, /openapi.yaml for specs and /swagger-ui, /explorer to redirect to externally hosted API explorer
<b>Signature:</b>
```typescript
protected _setupOpenApiSpecEndpoints(): void;
```
<b>Returns:</b>
void