---
title: appByKey - GraphQL Admin
description: |-
  Fetches an app by its client ID.
  Returns null if the app doesn't exist.
api_version: 2025-10
api_name: admin
type: query
api_type: graphql
source_url:
  html: https://shopify.dev/docs/api/admin-graphql/latest/queries/appbykey
  md: https://shopify.dev/docs/api/admin-graphql/latest/queries/appbykey.md
---

# app​By​Key

query

Fetches an app by its client ID. Returns null if the app doesn't exist.

## Arguments

* api​Key

  [String!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String)

  required

  Client ID of the app.

***

## Possible returns

* App

  [App](https://shopify.dev/docs/api/admin-graphql/latest/objects/App)

  A Shopify application.

***

## Examples

* ### appByKey reference

## Query Reference

```graphql
{
  appByKey(apiKey) {
    # appByKey fields
  }
}
```