Subscription Webhooks

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Sankaet Pathak
November 9, 2015

Today we are announcing a new webhook service that we have been working on.

Quite a few of our existing customers wanted a way to receive updates on not just transactions but also on nodes and users. Others have asked for a more robust webhook service that is more fault tolerant than our current one.

So keeping both in mind today, we are introducing a new webhook service that does three things well:

  1. Robust subscriptions
  2. More fault tolerant
  3. Logging

Robust subscriptions

The new subscriptions lets developers subscribe to all 3 objects: Users, Nodes & Transactions.

On top of that, you can even fine tune the types of updates you wish to receive. For instance, if you just want notifications when a user is created with your gateway credentials, you can just subscribe to that.

Creating a subscription is easy. It just requires a POST to /api/v3/subscription/add in CORE V3, or a POST to /api/3/subscriptionsin REST.

Example of a CORE V3 request:

Example of a REST V3 request:

The subscription syntax is very simple. It works the following way:

You can also provide scope for specific objects as well. More details regarding the syntax are right here in the API docs.

Fault Tolerant

The new webhook service is much more robust than before. If for some reason we fail to deliver a webhook to you, we will continue trying to send the request every 10 minutes until we are successful in delivering the webhook,for up to 24 hours since its origination.

This gives you enough time to be notified if your webhook receiver is down, and you can get it up and running without missing out on updates from us.


We are also adding logging for every webhook. Regardless of whether it succeeds or fails, you will be able to access the request, response and the status of the webhooks right from your dashboard.

With the new subscription service, we anticipate developers being able to build applications that are always in sync with their data. From KYC updates, node balance updates and also transaction updates.

As always, we constantly work hard to make Synapse the best payments network for you. In the coming weeks we will announce more exciting updates, so stay tuned!

Sankaet Pathak

Founder & CEO @ Synapse

┬ęSynapse Financial Technologies Inc. 2020