tawk.to Webhooks Skill

When to Use This Skill

• How do I receive tawk.to webhooks?
• How do I verify the X-Tawk-Signature header on a tawk.to webhook?
• Why is my tawk.to webhook signature verification failing?
• How do I handle chat:start, chat:end, chat:transcript_created and ticket:create events?

Essential Code (USE THIS)

tawk.to signs every webhook with HMAC-SHA1 over the raw request body, keyed with the webhook's secret key. The lowercase hex digest is sent in the X-Tawk-Signature header. There is no timestamp and no prefix.

Verification (core)

const crypto = require('crypto');

function verifyTawkSignature(rawBody, signatureHeader, secret) {
  if (!signatureHeader || !secret) return false;
  const expected = crypto.createHmac('sha1', secret).update(rawBody).digest('hex');
  const a = Buffer.from(signatureHeader, 'utf8');
  const b = Buffer.from(expected, 'utf8');
  return a.length === b.length && crypto.timingSafeEqual(a, b);
}

import hashlib, hmac

def verify_tawk_signature(raw_body: bytes, signature: str | None, secret: str) -> bool:
    if not signature or not secret:
        return False
    expected = hmac.new(secret.encode(), raw_body, hashlib.sha1).hexdigest()
    return hmac.compare_digest(signature.encode(), expected.encode())

Use the raw body. In Express, mount express.raw({ type: '*/*' }) on the route so verification works whatever Content-Type the request carries; parse JSON only after the signature checks out.

For complete handlers with tests, see examples/express/, examples/nextjs/, examples/fastapi/.

Common Event Types

The event name is in the payload's event field (tawk.to sends no event-type header).

Each delivery carries an X-Hook-Event-Id header that stays the same across retries: use it as your idempotency key. Respond with any 2XX within 30 seconds; failures are retried for up to 12 hours.

Environment Variables

# The webhook's secret key (webhooks are under Administration > Settings > Webhooks)
TAWK_WEBHOOK_SECRET=your_webhook_secret_key

Local Development

npx hookdeck-cli listen 3000 tawk-to --path /webhooks/tawk-to

No account required. Use the URL Hookdeck prints as the webhook URL in tawk.to.

Reference Materials

• references/overview.md - What tawk.to webhooks are, events and payloads
• references/setup.md - Create a webhook and get the secret key
• references/verification.md - HMAC-SHA1 verification details and gotchas