Spelo + n8n

n8n is a self-hostable automation platform. Use it when you want full control of where the data lands and how it’s transformed, without paying per-task fees.

Workflow

Webhook node  →  Function node (HMAC verify)  →  Switch node  →  CRM/Slack/etc.

1. Webhook node

• Method: POST
• Path: anything you want (e.g. /spelo)
• Response: “Immediately” with a 200 — Spelo retries on non-2xx, so don’t hold the connection.

n8n shows you a Test URL — paste that into Spelo’s webhook config. After it fires once, switch to the Production URL.

2. HMAC verify (Function node)

const crypto = require('crypto');
const SECRET = 'env-spelo-webhook-secret';

const sig = $input.headers['x-spelo-signature']?.replace(/^sha256=/, '');
const expected = crypto
  .createHmac('sha256', SECRET)
  .update(JSON.stringify($input.body))
  .digest('hex');

if (sig !== expected) {
  throw new Error('invalid signature');
}
return $input;

(In n8n, store SECRET in the workflow’s environment variables, not inline.)

3. Switch node — by event type

Branch on {{ $json.event }}:

• lead.captured → create CRM contact
• conversation.recording_ready → kick off a transcription archive job
• lead.updated → update CRM status

4. Destinations

n8n has 400+ integration nodes. The common ones:

• HubSpot, Salesforce, Pipedrive, Zoho — direct CRM nodes
• Google Calendar — book a follow-up if data.preferred_date is set
• Slack — alert your sales channel
• Postgres / MySQL — also store the lead in your own DB

Self-hosting tip

Run n8n behind nginx/Traefik with HTTPS. Spelo will refuse to deliver to plain http:// URLs in production.