---
title: "Get experiment"
method: GET
path: "/api/v2/experiments/{experiment_id}"
tags: ["Experiments"]
---

# Get experiment

`GET /api/v2/experiments/{experiment_id}`

## Request

- Base URL: `https://api.datadoghq.com`
- URL: `https://api.datadoghq.com/api/v2/experiments/{experiment_id}`
- Auth: one of:
  - API key in header `DD-API-KEY` and API key in header `DD-APPLICATION-KEY`
  - OAuth 2
    - Authorization code: `/oauth2/v1/authorize`
    - Token URL: `/oauth2/v1/token` scopes: `product_analytics_experiments_read`
- TypeScript: <https://skmtc.dev/datadog/apis/datadog-api-v2-collection/docs/api/v2/experiments/:experiment_id/get.ts> (a function with typed inputs; its response is checked against the schema)

Get a complete experiment by ID. The response includes structured metadata, related links, and, when a complete setup exists, decision metrics, variants, `warehouse_exposure_configuration`, `datadog_flag_configuration`, STATIC or STEPS traffic exposure, and assignment and event dates. STEPS describes the configured plan rather than wall-clock history; Datadog step durations exclude pauses. The list endpoint omits these setup details.

## Path parameters

- `experiment_id` string, uuid, required: The UUID of the experiment.

## Response `200`

OK

- ExperimentsExperimentV2DTO: Response containing an experiment and its configuration.
  - `data` ExperimentsExperimentV2DTOData, required: Experiment resource with its identifier and configuration.
    - `attributes` ExperimentsPatchExperimentV2ResponseDataAttributes: Details of the experiment.
      - `assignments_end_date` string, date-time, nullable: End of the time window for experiment assignments.
      - `assignments_start_date` string, date-time, nullable: Start of the time window for experiment assignments.
      - `concluded_at` string, date-time, nullable: Time when the experiment was concluded.
      - `conclusion` ExperimentsPatchExperimentV2ResponseDataAttributesConclusion: Outcome and supporting text recorded when the experiment is concluded.
        - `decision_reason` string, nullable: Reason for the recorded decision.
        - `outcome` 'POSITIVE' | 'NEGATIVE' | 'NEUTRAL' | 'INCONCLUSIVE' | 'MISCONFIGURED' | 'UNKNOWN', nullable: Recorded experiment outcome.
        - `summary` string, nullable: Summary of the experiment conclusion.
      - `created_at` string, date-time: Time when this resource was created.
      - `datadog_flag_configuration` ExperimentsPatchExperimentV2ResponseDataAttributesDatadogFlagConfiguration, nullable: Feature flag, environment, and targeting configuration for the experiment.
        - `allocation_key` string: Key of the feature flag allocation linked to the experiment. Matches the allocation key that SDKs report in flag evaluation results and exposure events.
        - `entry_point` ExperimentsPatchExperimentV2ResponseDataAttributesDatadogFlagConfigurationEntryPoint, nullable, required: Datadog measure and filters used to select analyzed subjects.
          - `filters` ExperimentsDatadogEntryPointFilterGroup[], required: Complete Datadog OR-of-ANDs entry-point filter expression.
            - ExperimentsDatadogEntryPointFilter[]: Entry-point filters combined with AND.
              - …
          - `measure_id` string, required: Datadog measure UUID.
        - `environment_id` string: ID of the feature flag environment used by the experiment.
        - `feature_flag_id` string: ID of the feature flag linked to the experiment.
        - `targeting_rules` ExperimentsTargetingRule[]: Rules that select subjects for the experiment.
          - `conditions` ExperimentsTargetingRuleCondition[], required: Conditions that must all match for this rule. Each condition must use exactly one shape: saved_filter_id alone or operator plus attribute plus value.
            - union: A saved-filter condition or a complete inline condition. The two forms cannot be combined.
              - …
      - `decision_metrics` ExperimentsCreateExperimentV2RequestDataAttributesDecisionMetricsItems[]: Metrics used to decide the experiment outcome.
        - `is_primary` boolean, required: Whether this is the experiment primary metric.
        - `metric_id` string, uuid, required: Decision metric UUID.
      - `decision_variant_key` string: Key of the variant selected in the experiment decision.
      - `events_end_date` string, date-time, nullable: End of the time window for metric events.
      - `events_start_date` string, date-time, nullable: Start of the time window for metric events.
      - `experiment_type` string: Kind of experiment. STANDARD is an ordinary experiment. Other values, such as CANARY and HOLDOUT, identify experiments owned by another workflow. New kinds may be added; treat unknown values as non-standard.
      - `hypothesis` string: Expected effect that the experiment is intended to test.
      - `migration_metadata` unknown
      - `name` string: Display name of the experiment.
      - `pipeline_table_suffix` string: Suffix used to identify the experiment's pipeline output table.
      - `protocol_id` string: ID of the protocol associated with the experiment.
      - `related_links` ExperimentsCreateExperimentV2RequestDataAttributesRelatedLinksItems[]: Links to supporting material for the experiment.
        - `id` string, nullable: Link ID. Omit it when adding a link.
        - `title` string, nullable: Optional display title.
        - `url` string, required: Absolute URL.
      - `results_last_updated` string, date-time, nullable: Time of the most recent update to the experiment's results.
      - `split_by_properties` ExperimentsExperimentV2DTODataAttributesSplitByPropertiesItems[]: Properties used to split the experiment results into groups.
        - `column_name` string, required: Exposure field or Warehouse column used for the analysis dimension.
        - `column_type` 'varchar' | 'int' | 'double' | 'boolean' | 'varchar_array' | 'int_array' | 'double_array' | 'raw' | 'STRING' | 'INTEGER' | 'FLOAT' | 'BOOLEAN' | 'DATE' | 'TIMESTAMP', required: Type of the Datadog exposure field or Warehouse column.
        - `id` string, required: Read-only property ID. Omit it from POST and PATCH; writes identify properties by column_name.
        - `name` string, required: Display name for the analysis dimension.
      - `status` 'DRAFT' | 'SCHEDULED' | 'IN_PROGRESS' | 'READY_FOR_DECISION' | 'DECISION_MADE' | 'CANCELLED' | 'UNKNOWN': Current stage in the experiment lifecycle.
      - `structured_metadata` ExperimentsStructuredMetadataResponse[]: Values of structured metadata fields attached to the experiment.
        - `enum_values` string[]: Selected values for an enumerated metadata field.
        - `field_display_name` string: Display name of the metadata field.
        - `field_key` string, required: Key that identifies the metadata field.
        - `field_type` 'FREETEXT' | 'ENUM': Type of value stored in the structured metadata field.
        - `freetext_value` string: Text value for a free-text metadata field.
      - `subject_type_id` string, nullable: ID of the subject type used by this configuration.
      - `summary` string: Summary text recorded for the experiment.
      - `tags` string[]: Tags attached to the experiment.
      - `teams` string[]: Teams associated with the experiment.
      - `traffic_exposure` ExperimentsPatchExperimentV2ResponseDataAttributesTrafficExposure: Traffic exposure fraction or schedule configured for the experiment.
        - `fraction` number, double: STATIC exposure fraction. Draft experiments can change this value. After start only warehouse experiments without a Datadog flag can change a STATIC fraction through the public API.
        - `mode` 'STATIC' | 'STEPS', required: Whether exposure uses a fixed fraction or a sequence of steps.
        - `steps` ExperimentsCreateExperimentV2RequestDataAttributesTrafficExposureStepsItems[]: Configured exposure plan rather than wall-clock history. At least two steps must have strictly increasing fractions and no gaps. Warehouse steps start at assignments_start_date and can use different durations. New Datadog plans have at most five steps and a first fraction above zero. Their nonfinal durations must be equal and exclude time paused. Datadog steps start with the experiment. Running warehouse experiments can replace step fractions, durations, and the exposure mode. After start, Datadog exposure plans cannot change through the public API. The final duration is null and its fraction holds until assignment ends.
          - `duration_ms` integer, nullable, required: Positive step duration in milliseconds. Datadog durations exclude pauses. Send null for the final step.
          - `fraction` number, double, required: Fraction of traffic exposed during this step.
      - `updated_at` string, date-time: Time when this resource was last updated.
      - `variants` ExperimentsExperimentV2DTODataAttributesVariantsItems[]: Variants configured for the experiment.
        - `feature_flag_variant_id` string: Backing feature flag variant ID. Present for Datadog feature flag experiments and omitted for Warehouse experiments.
        - `is_active` boolean, required: Whether this variant participates in the experiment.
        - `is_control` boolean, required: Whether this is the single control variant.
        - `key` string, required: Value recorded in exposure data for this variant.
        - `name` string, nullable: Display name of the experiment variant.
        - `weight` number, double, required: Traffic allocation percentage.
      - `warehouse_exposure_configuration` ExperimentsPatchExperimentV2ResponseDataAttributesWarehouseExposureConfiguration, nullable: Warehouse exposure model and settings used to identify experiment assignments.
        - `entry_point` ExperimentsWarehouseEntryPoint, nullable, required: Optional Warehouse measure that scopes analyzed subjects.
          - `filters` ExperimentsWarehouseExposureFilter[], required: Complete ordered Warehouse entry-point filter set.
            - `operation` 'IS' | 'IS_NOT', required: Comparison applied by the warehouse entry-point filter.
            - `property_id` string, required: Warehouse property UUID.
            - `values` string[], required: Ordered values used by the filter.
          - `measure_id` string, required: Warehouse measure UUID.
        - `experiment_key` string, nullable, required: Warehouse experiment key. Reads can return null for incomplete configuration; configuration writes require a value.
        - `exposure_sql_model_id` string, required: ID of the exposure SQL model that provides assignment data.
    - `id` string, uuid, required: Identifier of the experiment.
    - `type` 'experiments', required: Experiments resource type.

## Other responses

- `400`: Malformed experiment ID (not a valid UUID).
- `401`: Missing or invalid authentication (dd-api-key + dd-application-key headers, or a valid user session).
- `403`: Authenticated caller lacks the product_analytics_experiments_read permission, or lacks feature-flag and environment read permissions for a Datadog-backed configuration.
- `404`: No experiment with this ID exists for the organization.
- `409`: The stored assignment configuration cannot be represented losslessly by this API (unsupported_configuration).
- `429`: Too many requests

---

[API](https://skmtc.dev/datadog/apis/datadog-api-v2-collection.md) - [All operations](https://skmtc.dev/datadog/apis/datadog-api-v2-collection/llms.txt) - [OpenAPI document](https://skmtc.dev/datadog/apis/datadog-api-v2-collection/revisions/3f70db624329?raw)