## Checks for Click To Call Support

Checks whether the current browser supports Click To Call. Call this function before creating a client to verify that all required browser APIs are available.

## Signature

```
import { checkWebRTCSupport } from '@cognigy/click-to-call-sdk';

const support = checkWebRTCSupport();
```

## Parameters
None.

## Returns
`{ supported: boolean; missing: string[] }`

| Property | Type | Description |
| --- | --- | --- |
| `supported` | `boolean` | `true` if the browser supports all required WebRTC APIs. |
| `missing` | `string[]` | List of missing browser features, if any. |

## Example

```
import { checkWebRTCSupport } from '@cognigy/click-to-call-sdk';

const support = checkWebRTCSupport();
if (!support.supported) {
  console.error('WebRTC not supported. Missing features:', support.missing);
} else {
  console.log('WebRTC is supported — ready to create a client');
}
```

## More Information

- [createWebRTCClient](https://docs.cognigy.com/click-to-call/sdk/api-reference/create-click-to-call-client) — create a client after verifying browser support

Last modified on April 21, 2026.