---
title: List tag indexing rules
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: Docs > API Reference > Metrics
---

# List tag indexing rules{% #list-tag-indexing-rules %}
Copy pageCopied
{% tab title="v2" %}

| Datadog site      | API endpoint                                                        |
| ----------------- | ------------------------------------------------------------------- |
| ap1.datadoghq.com | GET https://api.ap1.datadoghq.com/api/v2/metrics/tag-indexing-rules |
| ap2.datadoghq.com | GET https://api.ap2.datadoghq.com/api/v2/metrics/tag-indexing-rules |
| app.datadoghq.eu  | GET https://api.datadoghq.eu/api/v2/metrics/tag-indexing-rules      |
| app.ddog-gov.com  | GET https://api.ddog-gov.com/api/v2/metrics/tag-indexing-rules      |
| us2.ddog-gov.com  | GET https://api.us2.ddog-gov.com/api/v2/metrics/tag-indexing-rules  |
| app.datadoghq.com | GET https://api.datadoghq.com/api/v2/metrics/tag-indexing-rules     |
| us3.datadoghq.com | GET https://api.us3.datadoghq.com/api/v2/metrics/tag-indexing-rules |
| us5.datadoghq.com | GET https://api.us5.datadoghq.com/api/v2/metrics/tag-indexing-rules |

### Overview

List tag indexing rules for an org, sorted by `rule_order`, with offset/limit pagination. This endpoint requires the `metrics_read` permission.

OAuth apps require the `metrics_read` authorization [scope](https://docs.datadoghq.com/api/latest/scopes.md#metrics) to access this endpoint.



### Arguments

#### Query Strings

| Name         | Type    | Description                                         |
| ------------ | ------- | --------------------------------------------------- |
| page[limit]  | integer | Page size (1–1000, default 100).                    |
| page[offset] | integer | Page offset from the start of the list (default 0). |
| search       | string  | Substring filter on rule name.                      |

### Response

{% tab title="200" %}
OK
{% tab title="Model" %}
Response containing a page of tag indexing rules.

| Parent field | Field                       | Type      | Description                                                                                                                                                      |
| ------------ | --------------------------- | --------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|              | data                        | [object]  | Array of tag indexing rule objects.                                                                                                                              |
| data         | attributes                  | object    | Attributes of a tag indexing rule.                                                                                                                               |
| attributes   | created_at                  | date-time | Timestamp when the rule was created.                                                                                                                             |
| attributes   | created_by_handle           | string    | Handle of the user who created the rule.                                                                                                                         |
| attributes   | exclude_tags_mode           | boolean   | When true, the rule excludes the listed tags and indexes all others. When false (default), the rule includes only the listed tags.                               |
| attributes   | ignored_metric_name_matches | [string]  | Metric name prefixes excluded from the rule's scope.                                                                                                             |
| attributes   | metric_name_matches         | [string]  | Metric name prefixes (glob patterns) this rule applies to.                                                                                                       |
| attributes   | modified_at                 | date-time | Timestamp when the rule was last modified.                                                                                                                       |
| attributes   | modified_by_handle          | string    | Handle of the user who last modified the rule.                                                                                                                   |
| attributes   | name                        | string    | Human-readable name for the rule.                                                                                                                                |
| attributes   | options                     | object    | Versioned configuration options for a tag indexing rule.                                                                                                         |
| options      | data                        | object    | Data payload for tag indexing rule options.                                                                                                                      |
| data         | dynamic_tags                | object    | Configuration for including dynamically queried tags.                                                                                                            |
| dynamic_tags | queried_tags_window_seconds | int64     | Window in seconds for evaluating queried tags.                                                                                                                   |
| dynamic_tags | related_asset_tags          | boolean   | When true, tags from related assets are included.                                                                                                                |
| data         | manage_preexisting_metrics  | boolean   | When true, the rule applies to metrics that were ingested before the rule was created.                                                                           |
| data         | metric_match                | object    | Criteria for matching metrics based on query state.                                                                                                              |
| metric_match | is_queried                  | boolean   | Match metrics that are being queried.                                                                                                                            |
| metric_match | not_queried                 | boolean   | Match metrics that are not being queried.                                                                                                                        |
| metric_match | not_used_in_assets          | boolean   | Match metrics not used in any dashboards or monitors.                                                                                                            |
| metric_match | queried_window_seconds      | int64     | Window in seconds for evaluating query state.                                                                                                                    |
| metric_match | used_in_assets              | boolean   | Match metrics used in dashboards or monitors.                                                                                                                    |
| data         | override_previous_rules     | boolean   | When true, this rule's tag list overrides tags configured by earlier rules for the same metric. When false (default), tags from all matching rules are combined. |
| options      | version                     | int64     | Options schema version. Only `1` is supported.                                                                                                                   |
| attributes   | rule_order                  | int64     | Evaluation order within the org. Lower values are evaluated first. Assigned server-side on create (max+1); pass on update to change the rule's position.         |
| attributes   | tags                        | [string]  | Tag keys managed by this rule.                                                                                                                                   |
| data         | id                          | string    | The unique identifier (UUID) of the tag indexing rule.                                                                                                           |
| data         | type                        | enum      | The tag indexing rule resource type. Allowed enum values: `tag_indexing_rules`                                                                                   |
|              | links                       | object    | Pagination links. Only present if pagination query parameters were provided.                                                                                     |
| links        | first                       | string    | Link to the first page.                                                                                                                                          |
| links        | last                        | string    | Link to the last page.                                                                                                                                           |
| links        | next                        | string    | Link to the next page.                                                                                                                                           |
| links        | prev                        | string    | Link to previous page.                                                                                                                                           |
| links        | self                        | string    | Link to current page.                                                                                                                                            |
|              | meta                        | object    | Pagination metadata for a list of tag indexing rules.                                                                                                            |
| meta         | total                       | int64     | Total number of tag indexing rules in the org.                                                                                                                   |

{% /tab %}

{% tab title="Example" %}

```json
{
  "data": [
    {
      "attributes": {
        "created_at": "2024-01-15T12:00:00.000Z",
        "created_by_handle": "user@datadoghq.com",
        "exclude_tags_mode": false,
        "ignored_metric_name_matches": [
          "dd.test.excluded.*"
        ],
        "metric_name_matches": [
          "dd.test.*"
        ],
        "modified_at": "2024-01-15T12:00:00.000Z",
        "modified_by_handle": "user@datadoghq.com",
        "name": "my-indexing-rule",
        "options": {
          "data": {
            "dynamic_tags": {
              "queried_tags_window_seconds": 3600,
              "related_asset_tags": false
            },
            "manage_preexisting_metrics": true,
            "metric_match": {
              "is_queried": false,
              "not_queried": false,
              "not_used_in_assets": false,
              "queried_window_seconds": 3600,
              "used_in_assets": false
            },
            "override_previous_rules": false
          },
          "version": 1
        },
        "rule_order": 1,
        "tags": [
          "env",
          "service"
        ]
      },
      "id": "00000000-0000-0000-0000-000000000001",
      "type": "tag_indexing_rules"
    }
  ],
  "links": {
    "first": "string",
    "last": "string",
    "next": "string",
    "prev": "string",
    "self": "string"
  },
  "meta": {
    "total": 5
  }
}
```

{% /tab %}

{% /tab %}

{% tab title="400" %}
Bad Request
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="403" %}
Forbidden
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="429" %}
Too Many Requests
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

### Code Example

##### 
                  \# Curl command curl -X GET "https://api.datadoghq.com/api/v2/metrics/tag-indexing-rules" \
-H "Accept: application/json" \
-H "DD-API-KEY: ${DD_API_KEY}" \
-H "DD-APPLICATION-KEY: ${DD_APP_KEY}" 
                
##### 

```python
"""
List tag indexing rules returns "OK" response
"""

from datadog_api_client import ApiClient, Configuration
from datadog_api_client.v2.api.metrics_api import MetricsApi

configuration = Configuration()
with ApiClient(configuration) as api_client:
    api_instance = MetricsApi(api_client)
    response = api_instance.list_tag_indexing_rules()

    print(response)
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=python) and then save the example to `example.py` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" python3 "example.py"
##### 

```ruby
# List tag indexing rules returns "OK" response

require "datadog_api_client"
api_instance = DatadogAPIClient::V2::MetricsAPI.new
p api_instance.list_tag_indexing_rules()
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=ruby) and then save the example to `example.rb` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" rb "example.rb"
##### 

```go
// List tag indexing rules returns "OK" response

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"os"

	"github.com/DataDog/datadog-api-client-go/v2/api/datadog"
	"github.com/DataDog/datadog-api-client-go/v2/api/datadogV2"
)

func main() {
	ctx := datadog.NewDefaultContext(context.Background())
	configuration := datadog.NewConfiguration()
	apiClient := datadog.NewAPIClient(configuration)
	api := datadogV2.NewMetricsApi(apiClient)
	resp, r, err := api.ListTagIndexingRules(ctx, *datadogV2.NewListTagIndexingRulesOptionalParameters())

	if err != nil {
		fmt.Fprintf(os.Stderr, "Error when calling `MetricsApi.ListTagIndexingRules`: %v\n", err)
		fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
	}

	responseContent, _ := json.MarshalIndent(resp, "", "  ")
	fmt.Fprintf(os.Stdout, "Response from `MetricsApi.ListTagIndexingRules`:\n%s\n", responseContent)
}
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=go) and then save the example to `main.go` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" go run "main.go"
##### 

```java
// List tag indexing rules returns "OK" response

import com.datadog.api.client.ApiClient;
import com.datadog.api.client.ApiException;
import com.datadog.api.client.v2.api.MetricsApi;
import com.datadog.api.client.v2.model.TagIndexingRulesResponse;

public class Example {
  public static void main(String[] args) {
    ApiClient defaultClient = ApiClient.getDefaultApiClient();
    MetricsApi apiInstance = new MetricsApi(defaultClient);

    try {
      TagIndexingRulesResponse result = apiInstance.listTagIndexingRules();
      System.out.println(result);
    } catch (ApiException e) {
      System.err.println("Exception when calling MetricsApi#listTagIndexingRules");
      System.err.println("Status code: " + e.getCode());
      System.err.println("Reason: " + e.getResponseBody());
      System.err.println("Response headers: " + e.getResponseHeaders());
      e.printStackTrace();
    }
  }
}
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=java) and then save the example to `Example.java` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" java "Example.java"
##### 

```rust
// List tag indexing rules returns "OK" response
use datadog_api_client::datadog;
use datadog_api_client::datadogV2::api_metrics::ListTagIndexingRulesOptionalParams;
use datadog_api_client::datadogV2::api_metrics::MetricsAPI;

#[tokio::main]
async fn main() {
    let configuration = datadog::Configuration::new();
    let api = MetricsAPI::with_config(configuration);
    let resp = api
        .list_tag_indexing_rules(ListTagIndexingRulesOptionalParams::default())
        .await;
    if let Ok(value) = resp {
        println!("{:#?}", value);
    } else {
        println!("{:#?}", resp.unwrap_err());
    }
}
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=rust) and then save the example to `src/main.rs` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" cargo run
##### 

```typescript
/**
 * List tag indexing rules returns "OK" response
 */

import { client, v2 } from "@datadog/datadog-api-client";

const configuration = client.createConfiguration();
const apiInstance = new v2.MetricsApi(configuration);

apiInstance
  .listTagIndexingRules()
  .then((data: v2.TagIndexingRulesResponse) => {
    console.log(
      "API called successfully. Returned data: " + JSON.stringify(data)
    );
  })
  .catch((error: any) => console.error(error));
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=typescript) and then save the example to `example.ts` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" tsc "example.ts"
{% /tab %}
