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## Admin
Contains functions for authenticating and interacting with the Admin API.

This function can handle requests for apps embedded in the Admin, Admin extensions, or non-embedded apps.
[View Admin](/docs/api/shopify-app-remix/v2/authenticate/admin)
## Flow
Contains functions for verifying Shopify Flow extensions.

See the [Flow documentation](https://shopify.dev/docs/apps/flow/actions/endpoints) for more information.
[View Flow](/docs/api/shopify-app-remix/v2/authenticate/flow)
## Fulfillment Service
Contains functions for verifying fulfillment service requests.

See the [fulfillment service documentation](https://shopify.dev/docs/apps/fulfillment/fulfillment-service-apps) for more information.
[View Fulfillment Service](/docs/api/shopify-app-remix/v2/authenticate/fulfillment-service)
## App proxy
[App proxies](/docs/apps/online-store/app-proxies) take requests to Shopify links, and redirect them to external links.
The `authenticate.public.appProxy` function validates requests made to app proxies, and returns a context to enable querying Shopify APIs.

> Note: If the store has not installed the app, store-related properties such as `admin` or `storefront` will be `undefined`
[View App proxy](/docs/api/shopify-app-remix/v2/authenticate/app-proxy)
## Checkout
The `authenticate.public.checkout` function ensures that checkout extension requests are coming from Shopify, and returns helpers to respond with the correct headers.
[View Checkout](/docs/api/shopify-app-remix/v2/authenticate/checkout)
## Webhook
Contains functions for verifying Shopify webhooks.

> Note: The format of the `admin` object returned by this function changes with the `v3_webhookAdminContext` future flag. Learn more about [gradual feature adoption](/docs/api/shopify-app-remix/guide-future-flags).
[View Webhook](/docs/api/shopify-app-remix/v2/authenticate/webhook)