Send Facebook Group Posts to n8n

With the Groups Watcher Pro plan, you can send every new post from your monitored Facebook groups and pages to n8n. Add a Webhook node as your trigger, copy the webhook URL, add it in Groups Watcher, and we deliver post details you can automate to Slack, Discord, email, SMS, Google Sheets, or any node in n8n. Most alerts arrive in under 60 seconds.

This feature is available on the Pro plan. Check pricing here.

Set up n8n

1. In n8n, create a new workflow. Add a Webhook node as the first (trigger) node.
2. Set the webhook to accept POST requests. n8n will show a unique URL (test or production).
3. Copy that URL and paste it into Groups Watcher as your webhook URL (in your campaign or Pro plan setup).
4. When you are ready to test, trigger a post from Groups Watcher (or use the test tool below); n8n will receive the data and you can map body.message and body.data in the next nodes.

The information we send matches our custom webhook doc: one alert per request with message and data (group name, post URL, body, images, videos, and more).

Test your n8n webhook

Before or after configuring your workflow, send a test to your n8n webhook URL. Open Send test webhook, enter the URL, and we send a sample POST so you can verify the workflow runs.

Request

• Method: POST
• Headers: Content-Type: application/json
• Body: JSON with message and a data object (one post per request). Full reference: Custom webhook.

Payload (n8n webhook data)

For the default format, the body has a short message and a data object with all post fields. In n8n you can map data.group_name, data.post_url, data.body, and so on in downstream nodes.

Each POST includes a short message and a data object with all post fields. See the full write-up on Custom webhook.

Payload shape

{
  "message": "<string>",
  "data": {
    "group_name": "<string>",
    "group_id": "<string>",
    "poster_name": "<string>",
    "poster_url": "<string>",
    "post_url": "<string>",
    "group_url": "<string>",
    "post_id": "<string>",
    "post_type": "regular_post" | "marketplace",
    "body": "<string>",
    "images": ["<url>", ...],
    "videos": ["<url>", ...],
    "timestamp": "<ISO 8601 string>"
  }
}

Slack, Discord, ntfy, and Teams use different formats. The example above applies when your automation receives a webhook URL from Groups Watcher (including via Zapier, Make, or n8n).

Field reference

Example payload

This is what n8n receives for each new post. Use these fields in your workflow (e.g. post to Slack, send email, add row to Google Sheets, send SMS via Twilio).

{
  "message": "New post in Tampa Bay Homeowners",
  "data": {
    "group_name": "Tampa Bay Homeowners",
    "group_id": "123456789",
    "poster_name": "Maria Johnson",
    "poster_url": "https://facebook.com/maria.johnson",
    "post_url": "https://www.facebook.com/groups/123456789/permalink/987654321012345/",
    "group_url": "https://www.facebook.com/groups/123456789",
    "post_id": "987654321012345",
    "post_type": "regular_post",
    "body": "Anyone have a good HVAC person in St. Pete? Our AC went out last night",
    "images": ["https://scontent.xx.fbcdn.net/v/.../image1.jpg", "https://.../image2.jpg"],
    "videos": [],
    "timestamp": "2026-02-11T14:30:00.000Z"
  }
}

Example use cases

You can use this webhook payload in n8n in several ways: post to Slack, send email, send SMS via Twilio, and post to Discord. Build a workflow with a Webhook trigger, add the branches you need, then add your webhook URL in Groups Watcher.

Frequently asked questions