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Slack Alert Payload

  • Capella Operational
  • reference
Learn more about the JSON payload structure used in Capella Slack alert integrations.

When you configure a Slack alert integration, you can structure the JSON alert payload using a template. You can choose between:

  • Standard Template: A predefined, read-only template.

  • Advanced Template: A customizable template that you can modify to include specific variables or fields. For more information, see Advanced Template.

These templates use Slack Block Kit message format. Capella automatically inserts both template types with variables that map to the following JSON objects and keys in the alert payload:

Object or Key Key Description

alert

name

The display name of the alert.

severity

Identifies the alert as either "critical" or "warning".

alertDuration

The duration of the alert.

alertDetectedAt

The date and time when the alert was detected.

description

A description of the alert with potential causes and solutions. For more detailed information, see the Alert Reference.

tenant

tenantId

The unique identifier of the project’s tenant.

tenantName

The user-defined name of the tenant.

project

projectId

The unique identifier of the project that contains the affected cluster or App Service.

projectName

The user-defined name of the project.

resource

clusterId

The unique identifier of the affected cluster.

clusterName

The user-defined name of the cluster.

appServiceId

The unique identifier of the affected App Service.

appServiceName

The user-defined name of the App Service.

regionProvider

The region and cloud service provider (CSP) of the resource.

capellaResourceUrl

The URL to view the resource in the Capella UI.

The following example shows an alert payload for a High CPU Usage Warning alert that Capella sent to Slack, formatted using the Standard Template:

Example: Alert Payload for Slack
{
  "blocks": [
    {
      "type": "header",
      "text": {
        "type": "plain_text",
        "text": "🚨 [Warning] High CPU Usage Warning | Cluster ABC"
      }
    },
    {
      "type": "section",
      "text": {
        "type": "mrkdwn",
        "text": "*Tenant:* <tenantId>, Tenant ABC\n\n\n*Project:* <projectId>, Project ABC\n\n\n*Cluster:* <clusterId>\n\n\n*Region/Provider:* us-east-1 (AWS)\n\n\n*Alert detected at:* 2026-05-08T12:07:20Z\n\n\n*Alert Duration:* 42s\n\n\n\n\n\n*ALERT DETAILS:* During a 5-minute interval, the 5-minute average CPU usage of one or more cluster nodes exceeded 85%. High CPU usage events can impact the throughput of your cluster. This issue could be due to recent changes in the downstream application or dataset, such as changes to the data type sent, the amount of data sent, or natural data/transaction growth. Consider scaling your service nodes to address the issue. If new queries were recently introduced, validate and add the required indexes."
      }
    },
    {
      "type": "actions",
      "elements": [
        {
          "type": "button",
          "text": {
            "type": "plain_text",
            "text": "View Resource in Capella",
            "emoji": true
          },
          "url": "https://cloud.couchbase.com/tenant/<tenantId>/project/<projectId>/clusters/<clusterId>",
          "action_id": "view_capella_resource"
        },
        {
          "type": "button",
          "text": {
            "type": "plain_text",
            "text": "Raise a Ticket",
            "emoji": true
          },
          "url": "https://cloud.couchbase.com/support",
          "action_id": "create_ticket"
        }
      ]
    },
    {
      "type": "context",
      "elements": [
        {
          "type": "image",
          "image_url": "https://www.couchbase.com/favicon.ico",
          "alt_text": "Couchbase Logo"
        },
        {
          "type": "mrkdwn",
          "text": "Couchbase Capella Monitoring"
        }
      ]
    }
  ]
}

See Also