Our create notifications endpoint allows you to customize the payload sent to Slack by setting notification.overrides.
The notification.overrides.slack parameter accepts all the body parameters of Slack's chat.postMessage API.
Provider-specific parameters in notification.overrides take precedence over the ones specified in notification.
Example: Slack Blocks
Here's how you would translate the Stacking multiple blocks example from the Slack docs:
{
"notification": {
"recipients": [
{
"email": "[email protected]"
}
],
"title": "New PTO Request",
"content": "Fred has requested PTO from Aug 10 - Aug 13",
"overrides": {
"providers": {
"slack": {
"blocks": [
{
"type": "header",
"text": {
"type": "plain_text",
"text": "New request"
}
},
{
"type": "section",
"fields": [
{
"type": "mrkdwn",
"text": "*Type:*\nPaid Time Off"
},
{
"type": "mrkdwn",
"text": "*Created by:*\n"
}
]
},
{
"type": "section",
"fields": [
{
"type": "mrkdwn",
"text": "*When:*\nAug 10 - Aug 13"
}
]
},
{
"type": "section",
"text": {
"type": "mrkdwn",
"text": ""
}
}
]
}
}
}
}
}