Webhooks in Sequence Builder

The content discusses the use of webhooks in Sequence Builder for game builders to listen to events on multiple blockchains.

Sequence Builder equips game builders with an indexer that listens to events across the many blockchains that we offer by providing an https callback

If you prefer a programmatic way to add webhooks that uses cURL, TypeScript or Go, check out this walkthrough.

What data can I listen to for my game?

• Mints from a contract
• TokenID transfers
• Transactions by an account address
• Event topics emitted by a contract
• Event topic hashes emitted by a contract

Creating Webhooks

The following steps guide you through creating your webhook

1. Select Project and go to Webhooks Section
2. Select Network and Add New Webhook
3. Complete Webhook Details

1. Select Project and go to Webhooks Section

   Select your project in the top left hand corner, select the Indexer section in the sidebar, and select the Webhooks tab.

   
2. Select Network and Add New Webhook

   In the dropdown beneath the webhooks tab, select the network you’re looking to create a webhook for based on the ones in your project. If you don’t see the network you’re looking for, you can always add a network, then + Add New Webhook

   
3. Complete Webhook Details

   Complete the required details like webhook URL, Contract Address(es), and ‘Events’.

   For the Events field, we are able to parse any arbitrary contract event, however you must input the event exactly as written in your smart contract. For example, for detecting transfer events you would input: Transfer(address indexed from, address indexed to, uint256 amount) with the indexed keyword. You can find an example of general event types here for common use cases along with Sequence specific ones.

   Once your desired fields are input, select Add Webhook.

   If you require a webhook endpoint you can use webhook.site

   Or, you can use template code with one of the following:

   Nodejs TypeScript Webhook (combined with ngrok)

   

   And you’re done!

Removing or Updating Webhooks

The following steps guide you through creating your updating or removing your webhook

1. Select Project and go to Webhooks Section
2. Select the Gear to Update or Remove your Webhook
3. Update or Remove Webhook

1. Select Project and go to Webhooks Section

   Select your project in the top left hand corner, select the Indexer section in the sidebar, and select the Webhooks tab.

   
2. Select the Gear to Update or Remove your Webhook

   In the webhooks screen, select the gear ⚙ for the webhook you want to remove or update

   
3. Update or Remove Webhook

   Then you can either Update Webhook or Remove your webhook by selecting either option