---
lang: en
title: 'API docs: context.invocationsource'
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.invocationsource.html
---

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [InvocationSource](./context.invocationsource.md)

## InvocationSource interface

An interface to represent the caller of the invocation

**Signature:**

```typescript
export interface InvocationSource<T = unknown> 
```

## Properties

<table><thead><tr><th>

Property


</th><th>

Modifiers


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

[type](./context.invocationsource.type.md)


</td><td markdown="1">

`readonly`


</td><td markdown="1">

string


</td><td markdown="1">

Type of the invoker, such as `proxy` and `route`


</td></tr>
<tr><td markdown="1">

[value](./context.invocationsource.value.md)


</td><td markdown="1">

`readonly`


</td><td markdown="1">

T


</td><td markdown="1">

Metadata for the source, such as `ResolutionSession`


</td></tr>
</tbody></table>