🔔Webhooks

Webhooks send real-time HTTP notifications to your server when rewards are distributed. Use them to sync payout data with your own systems — update balances, notify users, or trigger downstream workflows.

When are webhooks triggered?

Webhooks fire when qualifying movements are created:

Movement type	Movement reason
point	end_user_payout or affiliate_payout
onchain-currency	end_user_payout or affiliate_payout
airdrop	end_user_payout or affiliate_payout

Webhooks fire for all movement statuses, including rejected. Always check the status field before processing — see Payload fields below.

Webhook payload

Each webhook delivers a reward.earned event as an HTTP POST with a JSON body:

{
  "event_type": "reward.earned",
  "movement": {
    "type": "point",
    "reason": "end_user_payout",
    "status": "accepted",
    "status_details": null,
    "user_identifier": "0x1234...",
    "user_identifier_type": "evm_address",
    "amount": "1000",
    "currency": {
      "name": "POINT"
    },
    "conversion_name": "Trading Volume",
    "created_at": "2025-06-15T14:30:00Z"
  }
}

Payload fields

Field	Description
event_type	Always reward.earned
movement.type	point, onchain-currency, or airdrop
movement.reason	end_user_payout or affiliate_payout
movement.status	accepted, rejected, or pending
movement.status_details	Rejection reason (e.g., wallet screening failure). null when accepted
movement.user_identifier	Wallet address or identifier of the recipient
movement.user_identifier_type	evm_address, solana_address, xrpl_address, or email
movement.amount	Reward amount (token amounts in smallest unit)
movement.currency	Currency details (name, address, chain ID for onchain tokens)
movement.conversion_name	Name of the conversion that triggered the payout
movement.created_at	ISO 8601 timestamp

Handling webhooks

Your endpoint should receive the POST request, process the event, and return a 200 status code:

import express from 'express';

const app = express();
app.use(express.json());

app.post('/webhooks/fuul', (req, res) => {
  const event = req.body;

  if (event.event_type === 'reward.earned') {
    const { status, status_details, type, amount, user_identifier } = event.movement;

    if (status === 'accepted') {
      // Process the reward — update your database, notify the user, etc.
      console.log(`Reward: ${amount} ${type} → ${user_identifier}`);
    } else if (status === 'rejected') {
      // Log rejected movements for investigation
      console.warn(`Rejected: ${user_identifier} — ${status_details}`);
    }
  }

  // Always return 200 quickly
  res.status(200).send('OK');
});

cURL test (simulate a webhook delivery locally):

curl -X POST http://localhost:3000/webhooks/fuul \
  -H "Content-Type: application/json" \
  -d '{
    "event_type": "reward.earned",
    "movement": {
      "type": "point",
      "reason": "end_user_payout",
      "status": "accepted",
      "status_details": null,
      "user_identifier": "0x1234...",
      "user_identifier_type": "evm_address",
      "amount": "500",
      "currency": { "name": "POINT" },
      "conversion_name": "Referral Signup",
      "created_at": "2025-06-15T14:30:00Z"
    }
  }'

Retries

Failed deliveries (non-2xx responses or timeouts) are retried automatically. To avoid missed events:

• Return a 2xx status code as quickly as possible

• If processing takes time, acknowledge the request immediately and handle the event asynchronously

Best practices

Practice	Why
Return 200 immediately, process async	Prevents timeouts and unnecessary retries
Handle duplicates idempotently	Retries may deliver the same event more than once
Check the status field	Not all movements are accepted — rejected movements are also delivered
Log status_details for rejections	Contains the reason (e.g., wallet screening failure) for debugging
Use HTTPS for your endpoint	Protects payload data in transit

Managing webhooks

Webhooks are configured via the REST API:

Endpoint	Method	Description	Reference
/v1/webhooks	POST	Create a webhook endpoint	View
/v1/webhooks	GET	List your webhook endpoints	View
/v1/webhooks/{id}	GET	Get a specific webhook	View
/v1/webhooks/{id}	PATCH	Update a webhook endpoint	View
/v1/webhooks/{id}	DELETE	Delete a webhook endpoint	View
/v1/webhooks/{id}/deliveries	GET	View delivery history	View

Webhooks are currently only configurable via the REST API — webapp configuration is not yet available.