Connect n8n to Management OS.

1. Sign in to Management OS → Settings → Webhooks
2. Click New webhook key, label it for the source app, click Create
3. Copy the URL

1. Sign in to your n8n instance (your self-hosted URL or n8n Cloud)
2. Click Workflows in the left nav, then New workflow
3. Add a trigger node for the source app you want events from (n8n has hundreds — search the right sidebar)
4. Configure and test the trigger

1. On the canvas, click the small + next to your trigger node's output
2. Search for and add the HTTP Request node

1. Method: POST
2. URL: paste your Management OS webhook URL
3. Send Headers: toggle ON. Add header:
   • Name: Content-Type
   • Value: application/json
4. Send Body: toggle ON
5. Body Content Type: JSON
6. Specify Body: Using JSON (Fixed)
7. JSON: paste this and substitute n8n expressions (use n8n's expression editor — those {{ $json.field }} style references):

   {
     "source": "my-internal-tool",
     "event_type": "{{ $json.event_name }}",
     "external_id": "{{ $json.id }}",
     "subject_email": "{{ $json.email }}",
     "subject_account": "{{ $json.account }}",
     "summary": "{{ $json.summary }}"
   }

8. Save the workflow

1. Click Execute Workflow (bottom of the canvas)
2. Trigger an event in your source app
3. Click the HTTP Request node — you should see a 200 response with "status": "stored"
4. If success, toggle Active (top right of the canvas) to put the workflow into production

401 invalid_token: Webhook URL is wrong. Re-copy from Management OS Settings.

Body shows as a string instead of JSON: Make sure Body Content Type is set to JSON, not "Form-data" or "Raw".

Expressions render as literal text: You need to wrap n8n expressions in double curly braces and click the n8n expression-mode toggle. The expression editor has its own help if expressions don't evaluate.

Still stuck: support@mgmt-os.ai