> For the complete documentation index, see [llms.txt](https://docs.useshadowpay.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.useshadowpay.com/api-reference/webhooks.md).

# Webhooks

Programmatic management of webhook subscriptions. See [Webhooks & Events](/agents-and-automation/webhooks-and-events.md) for the event catalog and payload format.

***

## Create a webhook subscription

```
POST /v1/webhooks
```

### Request body

```json
{
  "url": "https://yourapp.com/hooks/shadowpay",
  "events": ["transfer.confirmed", "agent.transaction.pending_approval"]
}
```

### Response

```json
{
  "webhook_id": "wh_2c9f1a",
  "url": "https://yourapp.com/hooks/shadowpay",
  "events": ["transfer.confirmed", "agent.transaction.pending_approval"],
  "secret": "whsec_xxxxxxxxxxxxxxxxxxxx",
  "created_at": "2026-07-02T09:00:00Z"
}
```

The `secret` is shown once. Use it to verify the `X-ShadowPay-Signature` header on incoming deliveries.

***

## List webhook subscriptions

```
GET /v1/webhooks
```

***

## Delete a webhook subscription

```
DELETE /v1/webhooks/{webhook_id}
```

Deletion is immediate. No further deliveries will be attempted for that subscription.

***

## Verifying a delivery

Every delivery includes an `X-ShadowPay-Signature` header, an HMAC-SHA256 of the raw request body, signed with your webhook secret.

```python
import hmac
import hashlib

def verify_signature(payload_bytes, signature_header, secret):
    expected = hmac.new(
        secret.encode(),
        payload_bytes,
        hashlib.sha256
    ).hexdigest()
    return hmac.compare_digest(expected, signature_header)
```

Reject any delivery whose signature doesn't match before processing it.

***

## Replaying a missed delivery

```
POST /v1/webhooks/{webhook_id}/replay/{event_id}
```

Useful if your endpoint was briefly down and you want to manually recover a specific event rather than waiting for the automatic retry schedule.

***

## Delivery log

```
GET /v1/webhooks/{webhook_id}/deliveries
```

Returns the recent delivery history for a subscription, including response status codes and retry counts, for debugging failed integrations.


---

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