---
title: Subscribing to webhooks
description: Your app must respond to [mandatory webhook topics](/docs/apps/webhooks/configuration/mandatory-webhooks). In addition, your app can register [optional webhook topics](/docs/api/admin-rest/current/resources/webhook#event-topics).
api_version: v1
api_name: shopify-app-remix
source_url:
  html: https://shopify.dev/docs/api/shopify-app-remix/v1/guide-webhooks
  md: https://shopify.dev/docs/api/shopify-app-remix/v1/guide-webhooks.md
---

# Subscribing to webhooks

Your app must respond to [mandatory webhook topics](https://shopify.dev/docs/apps/webhooks/configuration/mandatory-webhooks). In addition, your app can register [optional webhook topics](https://shopify.dev/docs/api/admin-rest/current/resources/webhook#event-topics).

***

## Configuring webhooks

To set up webhooks first we need to configure `shopifyApp` with 2 pieces:

1. The webhooks you want to subscribe to. In this example we subscribe to the `APP_UNINSTALLED` topic.
2. The code to register the `APP_UNINSTALLED` topic after a merchant installs you app. Here `shopifyApp` provides an `afterAuth` hook.

Note

You can't register mandatory topics using this package, you must [configure those in the Partner Dashboard](https://shopify.dev/docs/apps/webhooks/configuration/mandatory-webhooks) instead.

### Examples

* #### /app/shopify.server.ts

  ##### /app/shopify.server.ts

  ```tsx
  import {shopifyApp, DeliveryMethod} from '@shopify/shopify-app-remix/server';

  const shopify = shopifyApp({
    apiKey: 'abcde1234567890',
    // ...etc
    webhooks: {
      APP_UNINSTALLED: {
        deliveryMethod: DeliveryMethod.Http,
        callbackUrl: '/webhooks',
      },
    },
    hooks: {
      afterAuth: async ({session}) => {
        shopify.registerWebhooks({session});
      },
    },
  });

  export const authenticate = shopify.authenticate;
  ```

## Set up your endpoints

Legitimate webhook requests are always `POST`s signed by Shopify, so you must authenticate them before taking any action.

For each `callbackUrl` in your configuration, you must set up an `action` that uses the `authenticate.webhook` function to authenticate the request.

Please keep in mind that webhook endpoints should respond as quickly as possible. If you need to run a long-running job, then consider using background tasks.

Caution

Webhook endpoints **must** respond with an `HTTP 200` code, or Shopify will retry.

### Examples

* #### /app/routes/webhooks.tsx

  ##### /app/routes/webhooks.tsx

  ```tsx
  import {ActionFunction} from '@remix-run/node';

  import db from '../db.server';

  import {authenticate} from '~/shopify.server';

  export const action: ActionFunction = async ({request}) => {
    const {topic, shop, session} = await authenticate.webhook(request);

    switch (topic) {
      case 'APP_UNINSTALLED':
        if (session) {
          await db.session.deleteMany({where: {shop}});
        }
        break;
      case 'CUSTOMERS_DATA_REQUEST':
      case 'CUSTOMERS_REDACT':
      case 'SHOP_REDACT':
      default:
        throw new Response('Unhandled webhook topic', {status: 404});
    }

    throw new Response();
  };
  ```

## Resources

[![](https://shopify.dev/images/icons/32/pickaxe-1.png)![](https://shopify.dev/images/icons/32/pickaxe-1-dark.png)](https://shopify.dev/docs/api/shopify-app-remix/authenticate/webhook)

[authenticate.webhook](https://shopify.dev/docs/api/shopify-app-remix/authenticate/webhook)