@loopback/docs/site/apidocs/openapi-v3.oas_enhancer_service.md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: openapi-v3.oas_enhancer_service'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
editurl: https://github.com/strongloop/loopback-next/tree/master/packages/openapi-v3
permalink: /doc/en/lb4/apidocs.openapi-v3.oas_enhancer_service.html
---

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[Home](./index.md) &gt; [@loopback/openapi-v3](./openapi-v3.md) &gt; [OAS\_ENHANCER\_SERVICE](./openapi-v3.oas_enhancer_service.md)

## OAS\_ENHANCER\_SERVICE variable

Strongly-typed binding key for SpecService

<b>Signature:</b>

```typescript
OAS_ENHANCER_SERVICE: BindingKey<OASEnhancerService>
```