@loopback/docs/site/apidocs/context.binding.key.md

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---
lang: en
title: 'API docs: context.binding.key'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/context
permalink: /doc/en/lb4/apidocs.context.binding.key.html
---

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [Binding](./context.binding.md) &gt; [key](./context.binding.key.md)

## Binding.key property

Key of the binding

<b>Signature:</b>

```typescript
readonly key: string;
```