Alert block
Displays an alert, warning or informational message with a level-coloured icon.
| Type | alert |
| Available in | Messages, Modals, Home tab |
Fields
Section titled “Fields”| Field | Type | Description | Required? |
|---|---|---|---|
type |
String | The type of block. For an alert block, type is always alert. |
Required |
text |
Text object | The alert message, using plain_text or mrkdwn formatting. Maximum 200 characters. |
Required |
level |
String | One of default, info, warning, error or success. Defaults to default. |
Optional |
block_id |
String | A unique identifier for the block. Maximum length is 255 characters. It must be unique within the message or view — a duplicate is replaced and reported as a warning. | Optional |
Examples
Section titled “Examples”An info alert
Section titled “An info alert”
{ "blocks": [ { "type": "alert", "level": "info", "text": { "type": "mrkdwn", "text": "Prices on this quote are valid until *31 October*." } } ]}Every level
Section titled “Every level”
{ "blocks": [ { "type": "alert", "level": "success", "text": { "type": "plain_text", "text": "Invoice INV-7731 was paid in full." } }, { "type": "alert", "level": "warning", "text": { "type": "plain_text", "text": "Stock for SKU-2210 is below the reorder point." } }, { "type": "alert", "level": "error", "text": { "type": "plain_text", "text": "The sync with the ERP failed. Retrying in 5 minutes." } }, { "type": "alert", "text": { "type": "plain_text", "text": "This channel is archived on 1 November." } } ]}