# Start running builds automatically (Amazon CLI)


If your source code is stored in a GitHub or a GitHub Enterprise Server repository, you can use GitHub webhooks to have Amazon CodeBuild rebuild your source code whenever a code change is pushed to the repository.

Run the **create-webhook** command as follows:

```
aws codebuild create-webhook --project-name <project-name>
```

*<project-name>* is the name of the build project that contains the source code to be rebuilt.

For GitHub, information similar to the following appears in the output:

```
{
  "webhook": {
    "url": "<url>"
  }
}
```

*<url>* is the URL to the GitHub webhook.

For GitHub Enterprise Server, information similar to the following appears in the output:

![\[Sample output information.\]](http://docs.amazonaws.cn/en_us/codebuild/latest/userguide/images/create-webhook-ghe.png)


1. Copy the secret key and payload URL from the output. You need them to add a webhook in GitHub Enterprise Server. 

1. In GitHub Enterprise Server, choose the repository where your CodeBuild project is stored. Choose **Settings**, choose **Hooks & services**, and then choose **Add webhook**. 

1. Enter the payload URL and secret key, accept the defaults for the other fields, and then choose **Add webhook**.