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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Protocol](./puppeteer.protocol.md) &gt; [Runtime](./puppeteer.protocol.runtime.md) &gt; [ExecutionContextDescription](./puppeteer.protocol.runtime.executioncontextdescription.md)

## Protocol.Runtime.ExecutionContextDescription interface

Description of an isolated world.

<b>Signature:</b>

```typescript
export interface ExecutionContextDescription 
```

## Properties

|  Property | Type | Description |
|  --- | --- | --- |
|  [auxData](./puppeteer.protocol.runtime.executioncontextdescription.auxdata.md) | any | Embedder-specific auxiliary data. |
|  [id](./puppeteer.protocol.runtime.executioncontextdescription.id.md) | [ExecutionContextId](./puppeteer.protocol.runtime.executioncontextid.md) | Unique id of the execution context. It can be used to specify in which execution context script evaluation should be performed. |
|  [name](./puppeteer.protocol.runtime.executioncontextdescription.name.md) | string | Human readable name describing given context. |
|  [origin](./puppeteer.protocol.runtime.executioncontextdescription.origin.md) | string | Execution context origin. |