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

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[Home](./index.md) &gt; [@loopback/core](./core.md) &gt; [createServiceBinding](./core.createservicebinding.md)

## createServiceBinding() function

Create a service binding from a class or provider

<b>Signature:</b>

```typescript
export declare function createServiceBinding<S>(cls: Constructor<S> | Constructor<Provider<S>>, options?: ServiceOptions): Binding<S>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  cls | <code>Constructor&lt;S&gt; &#124; Constructor&lt;Provider&lt;S&gt;&gt;</code> | Service class or provider |
|  options | <code>ServiceOptions</code> | Service options |

<b>Returns:</b>

`Binding<S>`