Using classifaily in n8n

What you need

• A classifaily API key from your dashboard
• n8n - self-hosted or cloud

Store your API key

In n8n, go to Settings > Credentials and create a new Header Auth credential. Set the name to Authorization and the value to Bearer cai_live_your_key_here. This keeps your key out of individual nodes and reusable across workflows.

Configure the HTTP Request node

Add an HTTP Request node to your workflow and configure it as follows:

• Method: POST
• URL: https://api.classifaily.com/v1/classify
• Authentication: Select the Header Auth credential you created above
• Body Content Type: JSON
• Body:

{
  "input": "{{ $json.message }}",
  "categories": ["sales_inquiry", "support_request", "spam", "partnership", "other"]
}

Replace {{ $json.message }} with the expression that maps to the text field from your trigger node.

After configuring, click Execute Node to test. The response will appear in the output panel:

{
  "result": {
    "label": "support_request",
    "confidence": 0.91
  }
}

Branch with the Switch node

Add a Switch node after the HTTP Request node. Set the value to {{ $json.result.label }} and add a rule for each label:

• Value equals sales_inquiry - connect to CRM node
• Value equals support_request - connect to helpdesk node
• Value equals spam - connect to a No-op or end the branch
• Fallback - connect to a Slack notification for manual review

Add a confidence check

Insert an IF node between the HTTP Request and Switch nodes to filter low-confidence results:

• Condition: {{ $json.result.confidence }} greater than 0.75
• True branch - continue to Switch node
• False branch - route to manual review Slack channel

Full workflow example: contact form routing

1. Webhook node - receives form submissions
2. HTTP Request node - POST to classifaily with the form message and categories ["sales", "support", "partnership", "spam"]
3. IF node - confidence greater than 0.75
4. Switch node - branches on result.label
5. Per-branch actions: HubSpot, Zendesk, Gmail forward, Slack

This workflow replaces manual triage and runs 24/7 for fractions of a cent per submission.