> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dograh.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sync Data using Webhook

> Get everything Dograh learned during the call back into your system the moment it ends.

The last page covered sending data into a call with API Trigger and `initial_context`. Now the opposite side: how Dograh sends what it learned back out to your system once the call ends.

That extracted data lives in `gathered_context`. So the full picture is: `initial_context` is what your backend sends into the call, `gathered_context` is what Dograh extracts from it. A **Webhook** node is how you get `gathered_context` back out.

<iframe className="w-full aspect-video rounded-xl" src="https://www.youtube.com/embed/w4XvzPWoFv4" title="Dograh Webhook Node Explained, Get Call Data Into Your Backend" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowFullScreen />

## Step 1: Add the node

Click **Add node**, scroll down, and you'll find the **Webhook** node. Add it and open it up.

## Step 2: Set the endpoint

First thing you'll see is the endpoint URL. Paste your backend's webhook URL here. Still testing? Use a free URL from [webhook.site](https://webhook.site), copy your unique URL there and paste it into Dograh.

Set the method to **POST**. If your backend needs auth, add a bearer token or API key right here too.

## Step 3: Build the payload template

This is the important part, it decides exactly what JSON Dograh sends. Include both kinds of context: `initial_context` fields like debtor name, client name, and debt amount, and `gathered_context` fields like amount to pay, payment method, and sentiment.

```json theme={null}
{
  "debtor_name": "{{initial_context.debtor_name}}",
  "client_name": "{{initial_context.client_name}}",
  "debt_amount": "{{initial_context.debt_amount}}",
  "amount_user_will_pay": "{{gathered_context.amount_user_will_pay}}",
  "payment_method": "{{gathered_context.payment_method}}",
  "sentiment": "{{gathered_context.sentiment}}"
}
```

<Warning>
  Variable names in your payload have to match your context fields exactly. If a variable cannot be resolved, its field remains in the payload with an empty string value.
</Warning>

## Step 4: Save and publish

Save the webhook node, then publish the agent.

## Step 5: Test it

Run a test call. When it ends, go back to your webhook receiver. You'll see one request with both `initial_context`, the data you sent into the call, and `gathered_context`, what Dograh extracted from the conversation, sitting in the same JSON payload.

That's the complete loop: your backend sends `initial_context` into Dograh, Dograh runs the call and extracts `gathered_context`, and the webhook node sends the final structured data back to your backend. For production, swap the webhook.site URL for your real backend URL.

## Next Steps

* **Connect a real phone number**: [Connect with Telephony](/getting-started/connect-telephony) covers hooking up Twilio so these calls go out for real.
* **Full variable list and authentication options**: see the [Webhook reference](/voice-agent/webhook) and the [Webhook Payloads developer reference](/developer/webhooks).