RabbitPay Documentation

Webhooks are the recommended way to react to RabbitPay events in your backend. Rather than polling, RabbitPay POSTs a signed JSON payload to your endpoint when something interesting happens.

Register an endpoint

Create a webhook endpoint in the Dashboard → Developers → Webhooks, or via API:

curl https://api.rabbitpay.ai/v1/webhooks \
  -H "Authorization: Bearer sk_live_your_key" \
  -d '{
    "url": "https://yourapp.com/rabbitpay/webhook",
    "events": [
      "checkout.session.completed",
      "order.paid",
      "order.fulfilled",
      "refund.succeeded"
    ]
  }'

Event types

Event	When it fires
`checkout.session.created`	New checkout session created
`checkout.session.completed`	Shopper completed checkout
`checkout.session.expired`	Session expired without completion
`order.paid`	Order fully paid (prepaid or partial prepaid captured)
`order.fulfilled`	Order marked fulfilled in Shopify
`order.cancelled`	Order cancelled
`refund.succeeded`	Refund processed
`refund.failed`	Refund attempt failed
`cod.remitted`	Courier remitted COD amount
`cod.short_remit`	COD remittance was short

Example payload

{
  "id": "evt_01H8ZB...",
  "object": "event",
  "type": "order.paid",
  "created_at": 1729353600,
  "data": {
    "object": {
      "id": "ord_01H8Z9K7P2Y",
      "amount": 149900,
      "currency": "INR",
      "payment_method": "prepaid",
      "status": "paid",
      "customer": { "phone": "+919876543210" }
    }
  }
}

Verifying signatures

Every webhook includes a RabbitPay-Signature header:

RabbitPay-Signature: t=1729353600,v1=5257a869e7ecebeda3...

Compute the HMAC-SHA256 of t.body using your endpoint’s signing secret (whsec_...) and compare in constant time.

import crypto from 'crypto';

function verify(req, secret) {
  const header = req.headers['rabbitpay-signature'];
  const [tPart, v1Part] = header.split(',');
  const t = tPart.split('=')[1];
  const v1 = v1Part.split('=')[1];

  const signed = `${t}.${req.rawBody}`;
  const expected = crypto
    .createHmac('sha256', secret)
    .update(signed)
    .digest('hex');

  return crypto.timingSafeEqual(
    Buffer.from(v1),
    Buffer.from(expected),
  );
}

import hmac, hashlib

def verify(payload: bytes, header: str, secret: str) -> bool:
    parts = dict(p.split("=", 1) for p in header.split(","))
    signed = f"{parts['t']}.{payload.decode()}".encode()
    expected = hmac.new(secret.encode(), signed, hashlib.sha256).hexdigest()
    return hmac.compare_digest(parts["v1"], expected)

function verify(string $payload, string $header, string $secret): bool {
    parse_str(str_replace(',', '&', $header), $parts);
    $signed = $parts['t'] . '.' . $payload;
    $expected = hash_hmac('sha256', $signed, $secret);
    return hash_equals($expected, $parts['v1']);
}

Reject requests older than 5 minutes based on the t timestamp to prevent replay attacks.

Retries

RabbitPay retries failed deliveries with exponential backoff for 72 hours:

1st retry: 1 minute
2nd: 5 minutes
3rd: 30 minutes
4th–10th: 1, 2, 4, 8, 12, 24, 48 hours

Your endpoint should return 2xx within 5 seconds. Anything else is treated as a failure.

Debugging

Use the Dashboard → Developers → Webhook attempts to inspect every delivery, replay events, or download the raw payload for local testing.

Use Mintlify Webhook CLI or ngrok to receive real webhooks against your local dev server.

​Register an endpoint

​Event types

​Example payload

​Verifying signatures

​Retries

​Debugging

Register an endpoint

Event types

Example payload

Verifying signatures

Retries

Debugging