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

# Retrieve a rule

> Retrieves a rule by its ID.

**Required ACL:** `editSettings`, `settings`

To find the object ID of a rule, use the [`search` operation](https://www.algolia.com/doc/rest-api/composition/search-composition-rules).

## Usage

<CodeGroup>
  ```cs C# theme={"system"}
  // Initialize the client
  var client = new CompositionClient(
    new CompositionConfig("ALGOLIA_APPLICATION_ID", "ALGOLIA_API_KEY")
  );

  // Call the API
  var response = await client.GetRuleAsync("foo", "123");

  // print the response
  Console.WriteLine(response);
  ```

  ```dart Dart theme={"system"}
  // Initialize the client
  final client = CompositionClient(
      appId: 'ALGOLIA_APPLICATION_ID', apiKey: 'ALGOLIA_API_KEY');

  // Call the API
  final response = await client.getRule(
    compositionID: "foo",
    objectID: "123",
  );

  // print the response
  print(response);
  ```

  ```go Go theme={"system"}
  // Initialize the client
  client, err := composition.NewClient("ALGOLIA_APPLICATION_ID", "ALGOLIA_API_KEY")
  if err != nil {
    // The client can fail to initialize if you pass an invalid parameter.
    panic(err)
  }

  // Call the API
  response, err := client.GetRule(client.NewApiGetRuleRequest(
    "foo", "123"))
  if err != nil {
    // handle the eventual error
    panic(err)
  }


  // print the response
  print(response)
  ```

  ```java Java theme={"system"}
  // Initialize the client
  CompositionClient client = new CompositionClient("ALGOLIA_APPLICATION_ID", "ALGOLIA_API_KEY");

  // Call the API
  CompositionRule response = client.getRule("foo", "123");

  // print the response
  System.out.println(response);
  ```

  ```js JavaScript theme={"system"}
  // Initialize the client
  const client = compositionClient('ALGOLIA_APPLICATION_ID', 'ALGOLIA_API_KEY');

  // Call the API
  const response = await client.getRule({ compositionID: 'foo', objectID: '123' });


  // print the response
  console.log(response);
  ```

  ```kotlin Kotlin theme={"system"}
  // Initialize the client
  val client = CompositionClient(appId = "ALGOLIA_APPLICATION_ID", apiKey = "ALGOLIA_API_KEY")

  // Call the API
  var response = client.getRule(compositionID = "foo", objectID = "123")


  // print the response
  println(response)
  ```

  ```php PHP theme={"system"}
  // Initialize the client
  $client = CompositionClient::create('ALGOLIA_APPLICATION_ID', 'ALGOLIA_API_KEY');

  // Call the API
  $response = $client->getRule(
      'foo',
      '123',
  );


  // print the response
  var_dump($response);
  ```

  ```python Python theme={"system"}
  # Initialize the client
  # In an asynchronous context, you can use CompositionClient instead, which exposes the exact same methods.
  client = CompositionClientSync("ALGOLIA_APPLICATION_ID", "ALGOLIA_API_KEY")

  # Call the API
  response = client.get_rule(
      composition_id="foo",
      object_id="123",
  )


  # print the response
  print(response)
  ```

  ```ruby Ruby theme={"system"}
  # Initialize the client
  client = Algolia::CompositionClient.create("ALGOLIA_APPLICATION_ID", "ALGOLIA_API_KEY")

  # Call the API
  response = client.get_rule("foo", "123")


  # print the response
  puts(response)
  ```

  ```scala Scala theme={"system"}
  // Initialize the client
  val client = CompositionClient(appId = "ALGOLIA_APPLICATION_ID", apiKey = "ALGOLIA_API_KEY")

  // Call the API
  val response = Await.result(
    client.getRule(
      compositionID = "foo",
      objectID = "123"
    ),
    Duration(100, "sec")
  )

  // print the response
  println(response)
  ```

  ```swift Swift theme={"system"}
  // Initialize the client
  let client = try CompositionClient(appID: "ALGOLIA_APPLICATION_ID", apiKey: "ALGOLIA_API_KEY")

  // Call the API
  let response = try await client.getRule(compositionID: "foo", objectID: "123")

  // print the response
  print(response)
  ```
</CodeGroup>

<Card icon="folder-code" horizontal="true" title="See the full API reference" arrow="true" href="/doc/rest-api/composition/get-rule">
  For more details about input parameters
  and response fields.
</Card>