--- title: Conclude experiment description: Datadog, the leading service for cloud-scale monitoring. breadcrumbs: Docs > API Reference > Experiments --- > For the complete documentation index, see [llms.txt](https://docs.datadoghq.com/llms.txt). {% callout %} # Important note for users on the following Datadog sites: app.ddog-gov.com, us2.ddog-gov.com {% alert level="danger" %} This product is not supported for your selected [Datadog site](https://docs.datadoghq.com/getting_started/site.md). ({% placeholder "user-datadog-site-name" /%}). {% /alert %} {% /callout %} # Conclude experiment{% #conclude-experiment %} {% tab title="v2" %} | Datadog site | API endpoint | | ----------------- | ------------------------------------------------------------------------------ | | ap1.datadoghq.com | POST https://api.ap1.datadoghq.com/api/v2/experiments/{experiment_id}/conclude | | ap2.datadoghq.com | POST https://api.ap2.datadoghq.com/api/v2/experiments/{experiment_id}/conclude | | app.datadoghq.eu | POST https://api.datadoghq.eu/api/v2/experiments/{experiment_id}/conclude | | app.ddog-gov.com | POST https://api.ddog-gov.com/api/v2/experiments/{experiment_id}/conclude | | us2.ddog-gov.com | POST https://api.us2.ddog-gov.com/api/v2/experiments/{experiment_id}/conclude | | uk1.datadoghq.com | POST https://api.uk1.datadoghq.com/api/v2/experiments/{experiment_id}/conclude | | app.datadoghq.com | POST https://api.datadoghq.com/api/v2/experiments/{experiment_id}/conclude | | us3.datadoghq.com | POST https://api.us3.datadoghq.com/api/v2/experiments/{experiment_id}/conclude | | us5.datadoghq.com | POST https://api.us5.datadoghq.com/api/v2/experiments/{experiment_id}/conclude | ### Overview Conclude an experiment on a winning variant. The experiment moves to DECISION_MADE status, the outcome is recorded in its conclusion, and for a flag-backed experiment the winning variant is rolled out to 100% of the linked feature flag allocation. `decision_variant_key` must match a variant in the experiment. Only an experiment that is currently running or ready for a decision can be concluded. Concluding is not reversible and is not idempotent: concluding an already-concluded experiment returns 409. This endpoint requires the `product_analytics_experiments_write` permission. OAuth apps require the `product_analytics_experiments_write` authorization [scope](https://docs.datadoghq.com/api/latest/scopes.md#experiments) to access this endpoint. ### Arguments #### Path Parameters | Name | Type | Description | | ------------------------------- | ------ | --------------------------- | | experiment_id [*required*] | string | The UUID of the experiment. | ### Request #### Body Data (required) {% tab title="Model" %} | Parent field | Field | Type | Description | | ------------ | -------------------------------------- | ------ | --------------------------------------------------------------------------------------------- | | | data [*required*] | object | Experiment conclusion resource with the experiment identifier and decision. | | data | attributes [*required*] | object | Decision to record when concluding the experiment. | | attributes | decision_variant_key [*required*] | string | Key of the winning variant. Must match a variant on the experiment and must not be blank. | | data | id | string | Identifier of the experiment to conclude. | | data | type [*required*] | enum | Conclude experiment request resource type. Allowed enum values: `conclude-experiment-request` | {% /tab %} {% tab title="Example" %} ```json { "data": { "attributes": { "decision_variant_key": "treatment" }, "id": "string", "type": "conclude-experiment-request" } } ``` {% /tab %} ### Response {% tab title="204" %} The experiment was concluded and the winning variant was rolled out to its linked feature flag allocation. {% /tab %} {% tab title="400" %} Malformed experiment ID, malformed request body, or a missing decision_variant_key. {% 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="401" %} Missing or invalid authentication (dd-api-key + dd-application-key headers, or a valid user session). {% 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" %} Authenticated caller lacks the product_analytics_experiments_write permission, lacks permission to edit this experiment, or lacks contribute permission on the feature flag owning its allocation. {% 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="404" %} No experiment with this ID exists for the organization. {% 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="409" %} The experiment is not running or ready for a decision, its linked feature flag environment requires an approval for the rollout this would perform, or that flag has a pending suggestion for its allocations. {% 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. | Field | Type | Description | | ------------------------ | -------- | ----------------- | | errors [*required*] | [string] | A list of errors. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ "Bad Request" ] } ``` {% /tab %} {% /tab %} ### Code Example ##### \## default # \# Path parameters export experiment_id="550e8400-e29b-41d4-a716-446655440000" \# Use a Personal Access Token or Service Access Token export DD_BEARER_TOKEN="" \# Curl command curl -X POST "https://api.datadoghq.com/api/v2/experiments/${experiment_id}/conclude" \ -H "Content-Type: application/json" \ -H "Authorization: Bearer ${DD_BEARER_TOKEN}" \ -d @- << EOF { "data": { "attributes": { "decision_variant_key": "treatment" }, "type": "conclude-experiment-request" } } EOF ##### ```python """ Conclude experiment returns "The experiment was concluded and the winning variant was rolled out to its linked feature flag allocation." response """ from os import environ from datadog_api_client import ApiClient, Configuration from datadog_api_client.v2.api.experiments_api import ExperimentsApi from datadog_api_client.v2.model.experiments_conclude_experiment_v2_request import ( ExperimentsConcludeExperimentV2Request, ) from datadog_api_client.v2.model.experiments_conclude_experiment_v2_request_data import ( ExperimentsConcludeExperimentV2RequestData, ) from datadog_api_client.v2.model.experiments_conclude_experiment_v2_request_data_attributes import ( ExperimentsConcludeExperimentV2RequestDataAttributes, ) from datadog_api_client.v2.model.experiments_conclude_experiment_v2_request_data_type import ( ExperimentsConcludeExperimentV2RequestDataType, ) from uuid import UUID body = ExperimentsConcludeExperimentV2Request( data=ExperimentsConcludeExperimentV2RequestData( attributes=ExperimentsConcludeExperimentV2RequestDataAttributes( decision_variant_key="treatment", ), type=ExperimentsConcludeExperimentV2RequestDataType.CONCLUDE_EXPERIMENT_REQUEST, ), ) configuration = Configuration() configuration.access_token = environ["DD_BEARER_TOKEN"] with ApiClient(configuration) as api_client: api_instance = ExperimentsApi(api_client) api_instance.conclude_experiment(experiment_id=UUID("550e8400-e29b-41d4-a716-446655440000"), body=body) ``` #### 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_BEARER_TOKEN="" python3 "example.py" ##### ```ruby # Conclude experiment returns "The experiment was concluded and the winning variant was rolled out to its linked feature # flag allocation." response require "datadog_api_client" DatadogAPIClient.configure do |config| config.access_token = ENV["DD_BEARER_TOKEN"] end api_instance = DatadogAPIClient::V2::ExperimentsAPI.new body = DatadogAPIClient::V2::ExperimentsConcludeExperimentV2Request.new({ data: DatadogAPIClient::V2::ExperimentsConcludeExperimentV2RequestData.new({ attributes: DatadogAPIClient::V2::ExperimentsConcludeExperimentV2RequestDataAttributes.new({ decision_variant_key: "treatment", }), type: DatadogAPIClient::V2::ExperimentsConcludeExperimentV2RequestDataType::CONCLUDE_EXPERIMENT_REQUEST, }), }) api_instance.conclude_experiment("550e8400-e29b-41d4-a716-446655440000", body) ``` #### 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_BEARER_TOKEN="" rb "example.rb" ##### ```go // Conclude experiment returns "The experiment was concluded and the winning variant was rolled out to its linked feature // flag allocation." response package main import ( "context" "fmt" "os" "github.com/DataDog/datadog-api-client-go/v2/api/datadog" "github.com/DataDog/datadog-api-client-go/v2/api/datadogV2" "github.com/google/uuid" ) func main() { body := datadogV2.ExperimentsConcludeExperimentV2Request{ Data: datadogV2.ExperimentsConcludeExperimentV2RequestData{ Attributes: datadogV2.ExperimentsConcludeExperimentV2RequestDataAttributes{ DecisionVariantKey: "treatment", }, Type: datadogV2.EXPERIMENTSCONCLUDEEXPERIMENTV2REQUESTDATATYPE_CONCLUDE_EXPERIMENT_REQUEST, }, } ctx := datadog.NewDefaultContext(context.Background()) ctx = context.WithValue(ctx, datadog.ContextAccessToken, os.Getenv("DD_BEARER_TOKEN")) configuration := datadog.NewConfiguration() apiClient := datadog.NewAPIClient(configuration) api := datadogV2.NewExperimentsApi(apiClient) r, err := api.ConcludeExperiment(ctx, uuid.MustParse("550e8400-e29b-41d4-a716-446655440000"), body) if err != nil { fmt.Fprintf(os.Stderr, "Error when calling `ExperimentsApi.ConcludeExperiment`: %v\n", err) fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r) } } ``` #### 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_BEARER_TOKEN="" go run "main.go" ##### ```java // Conclude experiment returns "The experiment was concluded and the winning variant was rolled out // to its linked feature // flag allocation." response import com.datadog.api.client.ApiClient; import com.datadog.api.client.ApiException; import com.datadog.api.client.v2.api.ExperimentsApi; import com.datadog.api.client.v2.model.ExperimentsConcludeExperimentV2Request; import com.datadog.api.client.v2.model.ExperimentsConcludeExperimentV2RequestData; import com.datadog.api.client.v2.model.ExperimentsConcludeExperimentV2RequestDataAttributes; import com.datadog.api.client.v2.model.ExperimentsConcludeExperimentV2RequestDataType; import java.util.UUID; public class Example { public static void main(String[] args) { ApiClient defaultClient = ApiClient.getDefaultApiClient(); defaultClient.setAccessToken(System.getenv("DD_BEARER_TOKEN")); ExperimentsApi apiInstance = new ExperimentsApi(defaultClient); ExperimentsConcludeExperimentV2Request body = new ExperimentsConcludeExperimentV2Request() .data( new ExperimentsConcludeExperimentV2RequestData() .attributes( new ExperimentsConcludeExperimentV2RequestDataAttributes() .decisionVariantKey("treatment")) .type( ExperimentsConcludeExperimentV2RequestDataType .CONCLUDE_EXPERIMENT_REQUEST)); try { apiInstance.concludeExperiment(UUID.fromString("550e8400-e29b-41d4-a716-446655440000"), body); } catch (ApiException e) { System.err.println("Exception when calling ExperimentsApi#concludeExperiment"); 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_BEARER_TOKEN="" java "Example.java" ##### ```rust // Conclude experiment returns "The experiment was concluded and the winning // variant was rolled out to its linked feature flag allocation." response use datadog_api_client::datadog; use datadog_api_client::datadogV2::api_experiments::ExperimentsAPI; use datadog_api_client::datadogV2::model::ExperimentsConcludeExperimentV2Request; use datadog_api_client::datadogV2::model::ExperimentsConcludeExperimentV2RequestData; use datadog_api_client::datadogV2::model::ExperimentsConcludeExperimentV2RequestDataAttributes; use datadog_api_client::datadogV2::model::ExperimentsConcludeExperimentV2RequestDataType; use uuid::Uuid; #[tokio::main] async fn main() { let body = ExperimentsConcludeExperimentV2Request::new( ExperimentsConcludeExperimentV2RequestData::new( ExperimentsConcludeExperimentV2RequestDataAttributes::new("treatment".to_string()), ExperimentsConcludeExperimentV2RequestDataType::CONCLUDE_EXPERIMENT_REQUEST, ), ); let configuration = datadog::Configuration::new(); let api = ExperimentsAPI::with_config(configuration); let resp = api .conclude_experiment( Uuid::parse_str("550e8400-e29b-41d4-a716-446655440000").expect("invalid UUID"), body, ) .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_APP_KEY="" cargo run {% /tab %}