Queue SLA breach webhook payload structure for Slack integration

NICE CXone API & Integrations
1

Quick question about configuring a Genesys Cloud webhook to trigger on queue service level breaches. I am porting logic from Twilio Functions where I had granular control over the payload construction. In Architect, I am setting up a notification event for when a queue’s SLA drops below a threshold, intending to POST to a Slack Incoming Webhook.

The documentation states:

“The webhook payload contains the queue details and the current service level percentage.”

However, when I inspect the JSON payload in the debug console, the structure is deeply nested under data.attributes.queue, making it cumbersome to map directly to a Slack blocks array using the standard Data Action mappings. I am trying to avoid writing a separate middleware service if possible.

Is there a way to flatten this payload within the webhook configuration itself, or am I forced to use an Architect Data Action with a custom script to reshape the JSON before sending it to Slack? I noticed the application/json content type is enforced, but I cannot find an option for payload transformation in the webhook settings UI. My current attempt returns a 200 OK from Genesys, but Slack rejects the body due to malformed JSON structure.

2

Check your Architect flow configuration and the webhook action settings. The default payload from Genesys Cloud is often too verbose or structured differently than what Slack expects. You need to transform the JSON before sending it.

  1. Define a JSON template in your Architect flow. Use the Set Variable action to create a clean JSON string. This avoids sending the entire queue object.
  2. Use JavaScript in a Run Script action if you need complex formatting. This is more reliable than string concatenation.
  3. Send the transformed payload to the Slack webhook URL.

Here is a working example for the Run Script action in Architect:

const queueName = data.queue.name;
const currentSLA = data.serviceLevelPercent;
const threshold = 80; // Your configured threshold

const slackPayload = {
 text: `🚨 *Queue SLA Breach*\n` +
 `*Queue:* ${queueName}\n` +
 `*Current SLA:* ${currentSLA}%\n` +
 `*Threshold:* ${threshold}%\n` +
 `*Action:* Check queue staffing immediately.`
};

// Set the variable for the next action
data.slackJson = JSON.stringify(slackPayload);

Then, in your Send Webhook Request action:

  • URL: Your Slack Incoming Webhook URL.
  • Method: POST.
  • Body: {{data.slackJson}}
  • Headers: Set Content-Type to application/json.

This approach ensures the Slack block kit receives a valid structure. Avoid sending raw Genesys Cloud JSON directly to Slack, as it often breaks the formatting. Also, ensure your webhook URL is stored in a secure variable in Genesys Cloud, not hardcoded in the flow. This prevents exposure if the flow is exported or shared.

If you are using the Client App SDK in your React desktop to monitor these breaches, you can also subscribe to queue events via the WebSocket API. This allows for real-time updates without relying on webhooks. Use the routing:queue:read scope for this.

3

Have you tried mapping the breach event directly to a CDK EventBridge rule instead of fighting Architect’s static JSON templates? It’s cleaner and avoids the payload bloat.

const rule = new Rule(this, 'SlackAlert', {
 eventPattern: {
 source: ['genesys.cloud'],
 detailType: ['Queue Service Level Breach'],
 detail: { queueId: [props.queueId] }
 },
 targets: [new LambdaFunction(this, 'NotifySlack')]
});

Let the Lambda handle the Slack formatting.

4

You might want to check at how the PureCloudPlatformClientV2 PHP SDK handles the startChat payload versus subsequent attribute updates. The suggestion above about schema compliance is valid, but often the real issue is the structure of the JSON you are sending to Slack. When I build these integrations in Laravel, I avoid sending the raw Genesys Cloud event object because it contains nested arrays that Slack’s block kit parser hates.

Here is how I handle it in my Guzzle client:

  • Extract the specific fields: Use a Set Variable action in Architect to create a simple associative array with queue_name and sla_percentage.
  • Format for Slack: Construct a blocks array manually. Slack requires specific formatting for text fields.
  • Send via Guzzle:
$payload = [
 'blocks' => [
 [
 'type' => 'section',
 'text' => [
 'type' => 'mrkdwn',
 'text' => ":warning: Queue *{$queue['name']}* is below SLA: *{$data['sla_percentage']}%*"
 ]
 ]
 ]
];

$client->post($slackWebhookUrl, [
 'json' => $payload,
 'headers' => ['Content-Type' => 'application/json']
]);

This keeps the payload light and ensures Slack renders it correctly.

5

This issue stems from the lack of explicit span injection in the webhook execution context. The suggestion above correctly identifies the payload structure, but the execution often fails due to missing trace correlation IDs. For distributed tracing support, see: https://support.genesys.com/otel-webhook-spans