Crashlytics can automatically send updates your servers through custom web hooks. To configure a custom web hook, you’ll need to provide the URL of your server. Click on the app in your settings panel and then on the integrations page, click “Web Hook,” and enter your URL.

When you enable a custom Web Hook, the service behind your URL must respond to two POST requests - Verification and Issue Impact Change.

1. Verification

After configuring your Web Hook, Crashlytics will send a verification to the provided URL. The POST will have a ‘verification’ parameter, and the body will be JSON of the form:

{
  "event": "verification",
  "payload_type": "none"
}

Your service must respond with a 200 level status code for the verification to succeed.

2. Issue Impact Change

The notification will occur only once per issue, when it hits the threshold (impact level) you set. At this time, Crashlytics will POST JSON of the form:

{
  "event": "issue_impact_change",
  "payload_type": "issue",
  "payload": {
    "display_id": 123 ,
    "title": "Issue Title" ,
    "method": "methodName of issue",
    "impact_level": 2,
    "crashes_count": 54,
    "impacted_devices_count": 16,
    "url": "http://crashlytics.com/full/url/to/issue"
  }
}

The POST will contain all the basic information about the issue:

• Title
• Subtitle
• Number of crashes recorded so far
• Number of impacted devices recorded so far
• Display number
• Current impact level

It will also include the direct URL to the issue page on our dashboard. Your service must respond with a 200 level status code to this POST. Crashlytics will retry a few more times if the service fails to respond initially.