---
lang: en
title: 'API docs: service-proxy.service_proxy_key'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.service-proxy.service_proxy_key.html
---

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[Home](./index.md) &gt; [@loopback/service-proxy](./service-proxy.md) &gt; [SERVICE\_PROXY\_KEY](./service-proxy.service_proxy_key.md)

## SERVICE\_PROXY\_KEY variable

<b>Signature:</b>

```typescript
SERVICE_PROXY_KEY: MetadataAccessor<string, ServiceProxyDecorator>
```

