Experiments API Reference

Experiments

For instructions on how to authenticate to use this endpoint, see API overview.

Endpoints

`GET`
`POST`
`GET`
`PATCH`
`DELETE`
`POST`
`POST`
`POST`
`POST`

List all experiments

List experiments for the current project. Supports filtering by status and archival state.

Required API key scopes

experiment:read

Path parameters

project_id
string

Query parameters

limit
integer
offset
integer

Response

Example request

GET /api/projects/:project_id/experiments
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.get(
    "<ph_app_host>/api/projects/{project_id}/experiments/".format(
        project_id=project_id
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
).json()

Example response

Status 200

RESPONSE
{
  "count": 123,
  "next": "http://api.example.org/accounts/?offset=400&limit=100",
  "previous": "http://api.example.org/accounts/?offset=200&limit=100",
  "results": [
    {
      "id": 0,
      "name": "string",
      "description": "string",
      "start_date": "2019-08-24T14:15:22Z",
      "end_date": "2019-08-24T14:15:22Z",
      "feature_flag_key": "string",
      "feature_flag": {
        "id": 0,
        "team_id": 0,
        "name": "string",
        "key": "string",
        "filters": {
          "property1": null,
          "property2": null
        },
        "deleted": true,
        "active": true,
        "ensure_experience_continuity": true,
        "has_encrypted_payloads": true,
        "version": -2147483648,
        "evaluation_runtime": "server",
        "bucketing_identifier": "distinct_id",
        "evaluation_contexts": [
          "string"
        ]
      },
      "holdout": {
        "id": 0,
        "name": "string",
        "description": "string",
        "filters": null,
        "created_by": {
          "id": 0,
          "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
          "distinct_id": "string",
          "first_name": "string",
          "last_name": "string",
          "email": "user@example.com",
          "is_email_verified": true,
          "hedgehog_config": {
            "property1": null,
            "property2": null
          },
          "role_at_organization": "engineering"
        },
        "created_at": "2019-08-24T14:15:22Z",
        "updated_at": "2019-08-24T14:15:22Z"
      },
      "holdout_id": 0,
      "exposure_cohort": 0,
      "parameters": null,
      "secondary_metrics": null,
      "saved_metrics": [
        {
          "id": 0,
          "experiment": 0,
          "saved_metric": 0,
          "metadata": null,
          "created_at": "2019-08-24T14:15:22Z",
          "query": null,
          "name": "string"
        }
      ],
      "saved_metrics_ids": [
        null
      ],
      "filters": null,
      "archived": true,
      "deleted": true,
      "created_by": {
        "id": 0,
        "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
        "distinct_id": "string",
        "first_name": "string",
        "last_name": "string",
        "email": "user@example.com",
        "is_email_verified": true,
        "hedgehog_config": {
          "property1": null,
          "property2": null
        },
        "role_at_organization": "engineering"
      },
      "created_at": "2019-08-24T14:15:22Z",
      "updated_at": "2019-08-24T14:15:22Z",
      "type": "web",
      "exposure_criteria": null,
      "metrics": null,
      "metrics_secondary": null,
      "stats_config": null,
      "scheduling_config": null,
      "_create_in_folder": "string",
      "conclusion": "won",
      "conclusion_comment": "string",
      "primary_metrics_ordered_uuids": null,
      "secondary_metrics_ordered_uuids": null,
      "exposure_preaggregation_enabled": true,
      "only_count_matured_users": true,
      "status": "draft",
      "user_access_level": "string"
    }
  ]
}

List all experiments

List experiments for the current project. Supports filtering by status and archival state.

Required API key scopes

experiment:read

Path parameters

project_id
string

Query parameters

limit
integer
offset
integer

Response

Example request

GET /api/projects/:project_id/experiments
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.get(
    "<ph_app_host>/api/projects/{project_id}/experiments/".format(
        project_id=project_id
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
).json()

Example response

Status 200

RESPONSE
{
  "count": 123,
  "next": "http://api.example.org/accounts/?offset=400&limit=100",
  "previous": "http://api.example.org/accounts/?offset=200&limit=100",
  "results": [
    {
      "id": 0,
      "name": "string",
      "description": "string",
      "start_date": "2019-08-24T14:15:22Z",
      "end_date": "2019-08-24T14:15:22Z",
      "feature_flag_key": "string",
      "feature_flag": {
        "id": 0,
        "team_id": 0,
        "name": "string",
        "key": "string",
        "filters": {
          "property1": null,
          "property2": null
        },
        "deleted": true,
        "active": true,
        "ensure_experience_continuity": true,
        "has_encrypted_payloads": true,
        "version": -2147483648,
        "evaluation_runtime": "server",
        "bucketing_identifier": "distinct_id",
        "evaluation_contexts": [
          "string"
        ]
      },
      "holdout": {
        "id": 0,
        "name": "string",
        "description": "string",
        "filters": null,
        "created_by": {
          "id": 0,
          "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
          "distinct_id": "string",
          "first_name": "string",
          "last_name": "string",
          "email": "user@example.com",
          "is_email_verified": true,
          "hedgehog_config": {
            "property1": null,
            "property2": null
          },
          "role_at_organization": "engineering"
        },
        "created_at": "2019-08-24T14:15:22Z",
        "updated_at": "2019-08-24T14:15:22Z"
      },
      "holdout_id": 0,
      "exposure_cohort": 0,
      "parameters": null,
      "secondary_metrics": null,
      "saved_metrics": [
        {
          "id": 0,
          "experiment": 0,
          "saved_metric": 0,
          "metadata": null,
          "created_at": "2019-08-24T14:15:22Z",
          "query": null,
          "name": "string"
        }
      ],
      "saved_metrics_ids": [
        null
      ],
      "filters": null,
      "archived": true,
      "deleted": true,
      "created_by": {
        "id": 0,
        "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
        "distinct_id": "string",
        "first_name": "string",
        "last_name": "string",
        "email": "user@example.com",
        "is_email_verified": true,
        "hedgehog_config": {
          "property1": null,
          "property2": null
        },
        "role_at_organization": "engineering"
      },
      "created_at": "2019-08-24T14:15:22Z",
      "updated_at": "2019-08-24T14:15:22Z",
      "type": "web",
      "exposure_criteria": null,
      "metrics": null,
      "metrics_secondary": null,
      "stats_config": null,
      "scheduling_config": null,
      "_create_in_folder": "string",
      "conclusion": "won",
      "conclusion_comment": "string",
      "primary_metrics_ordered_uuids": null,
      "secondary_metrics_ordered_uuids": null,
      "exposure_preaggregation_enabled": true,
      "only_count_matured_users": true,
      "status": "draft",
      "user_access_level": "string"
    }
  ]
}

Create experiments

Create a new experiment in draft status with optional metrics.

Required API key scopes

experiment:write

Path parameters

project_id
string

Request parameters

name
string
description
string
start_date
string
end_date
string
feature_flag_key
string
holdout_id
integer
parameters
secondary_metrics
saved_metrics_ids
array
filters
archived
boolean
deleted
boolean
type
exposure_criteria
metrics
metrics_secondary
stats_config
scheduling_config
_create_in_folder
string
conclusion
conclusion_comment
string
primary_metrics_ordered_uuids
secondary_metrics_ordered_uuids
exposure_preaggregation_enabled
boolean
only_count_matured_users
boolean

Response

Example request

POST /api/projects/:project_id/experiments
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/\
	-d name="string",\
	-d feature_flag_key="string"
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/".format(
        project_id=project_id
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={
		"name": "string",
		"feature_flag_key": "string"
	}
).json()

Example response

Status 201

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Create experiments

Create a new experiment in draft status with optional metrics.

Required API key scopes

experiment:write

Path parameters

project_id
string

Request parameters

name
string
description
string
start_date
string
end_date
string
feature_flag_key
string
holdout_id
integer
parameters
secondary_metrics
saved_metrics_ids
array
filters
archived
boolean
deleted
boolean
type
exposure_criteria
metrics
metrics_secondary
stats_config
scheduling_config
_create_in_folder
string
conclusion
conclusion_comment
string
primary_metrics_ordered_uuids
secondary_metrics_ordered_uuids
exposure_preaggregation_enabled
boolean
only_count_matured_users
boolean

Response

Example request

POST /api/projects/:project_id/experiments
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/\
	-d name="string",\
	-d feature_flag_key="string"
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/".format(
        project_id=project_id
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={
		"name": "string",
		"feature_flag_key": "string"
	}
).json()

Example response

Status 201

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Retrieve experiments

Retrieve a single experiment by ID, including its current status, metrics, feature flag, and results metadata.

Required API key scopes

experiment:read

Path parameters

id
integer
project_id
string

Response

Example request

GET /api/projects/:project_id/experiments/:id
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.get(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
).json()

Example response

Status 200

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Retrieve experiments

Retrieve a single experiment by ID, including its current status, metrics, feature flag, and results metadata.

Required API key scopes

experiment:read

Path parameters

id
integer
project_id
string

Response

Example request

GET /api/projects/:project_id/experiments/:id
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.get(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
).json()

Example response

Status 200

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Update experiments

Update an experiment. Use this to modify experiment properties such as name, description, metrics, variants, and configuration. Metrics can be added, changed and removed at any time.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Request parameters

name
string
description
string
start_date
string
end_date
string
feature_flag_key
string
holdout_id
integer
parameters
secondary_metrics
saved_metrics_ids
array
filters
archived
boolean
deleted
boolean
type
exposure_criteria
metrics
metrics_secondary
stats_config
scheduling_config
_create_in_folder
string
conclusion
conclusion_comment
string
primary_metrics_ordered_uuids
secondary_metrics_ordered_uuids
exposure_preaggregation_enabled
boolean
only_count_matured_users
boolean

Response

Example request

PATCH /api/projects/:project_id/experiments/:id
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl -X PATCH \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/\
	-d name="string"
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.patch(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={
		"name": "string"
	}
).json()

Example response

Status 200

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Update experiments

Update an experiment. Use this to modify experiment properties such as name, description, metrics, variants, and configuration. Metrics can be added, changed and removed at any time.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Request parameters

name
string
description
string
start_date
string
end_date
string
feature_flag_key
string
holdout_id
integer
parameters
secondary_metrics
saved_metrics_ids
array
filters
archived
boolean
deleted
boolean
type
exposure_criteria
metrics
metrics_secondary
stats_config
scheduling_config
_create_in_folder
string
conclusion
conclusion_comment
string
primary_metrics_ordered_uuids
secondary_metrics_ordered_uuids
exposure_preaggregation_enabled
boolean
only_count_matured_users
boolean

Response

Example request

PATCH /api/projects/:project_id/experiments/:id
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl -X PATCH \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/\
	-d name="string"
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.patch(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={
		"name": "string"
	}
).json()

Example response

Status 200

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Delete experiments

Hard delete of this model is not allowed. Use a patch API call to set "deleted" to true

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Example request

DELETE /api/projects/:project_id/experiments/:id
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl  -X DELETE \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.delete(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
)

Example response

Status 405 No response body

Delete experiments

Hard delete of this model is not allowed. Use a patch API call to set "deleted" to true

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Example request

DELETE /api/projects/:project_id/experiments/:id
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl  -X DELETE \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.delete(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
)

Example response

Status 405 No response body

Create experiments archive

Archive an ended experiment.

Hides the experiment from the default list view. The experiment can be restored at any time by updating archived=false. Returns 400 if the experiment is already archived or has not ended yet.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Response

Example request

POST /api/projects/:project_id/experiments/:id/archive
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/archive/
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/archive/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
).json()

Example response

Status 200

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Create experiments archive

Archive an ended experiment.

Hides the experiment from the default list view. The experiment can be restored at any time by updating archived=false. Returns 400 if the experiment is already archived or has not ended yet.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Response

Example request

POST /api/projects/:project_id/experiments/:id/archive
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/archive/
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/archive/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
).json()

Example response

Status 200

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Create experiments create exposure cohort for experiment

Mixin for ViewSets to handle ApprovalRequired exceptions from decorated serializers.

This mixin intercepts ApprovalRequired exceptions raised by the @approval_gate decorator on serializer methods and converts them into proper HTTP 409 Conflict responses with change request details.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Request parameters

name
string
description
string
start_date
string
end_date
string
feature_flag_key
string
holdout_id
integer
parameters
secondary_metrics
saved_metrics_ids
array
filters
archived
boolean
deleted
boolean
type
exposure_criteria
metrics
metrics_secondary
stats_config
scheduling_config
_create_in_folder
string
conclusion
conclusion_comment
string
primary_metrics_ordered_uuids
secondary_metrics_ordered_uuids
exposure_preaggregation_enabled
boolean
only_count_matured_users
boolean

Example request

POST /api/projects/:project_id/experiments/:id/create_exposure_cohort_for_experiment
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/create_exposure_cohort_for_experiment/\
	-d name="string",\
	-d feature_flag_key="string"
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/create_exposure_cohort_for_experiment/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={
		"name": "string",
		"feature_flag_key": "string"
	}
).json()

Example response

Status 200 No response body

Create experiments create exposure cohort for experiment

Mixin for ViewSets to handle ApprovalRequired exceptions from decorated serializers.

This mixin intercepts ApprovalRequired exceptions raised by the @approval_gate decorator on serializer methods and converts them into proper HTTP 409 Conflict responses with change request details.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Request parameters

name
string
description
string
start_date
string
end_date
string
feature_flag_key
string
holdout_id
integer
parameters
secondary_metrics
saved_metrics_ids
array
filters
archived
boolean
deleted
boolean
type
exposure_criteria
metrics
metrics_secondary
stats_config
scheduling_config
_create_in_folder
string
conclusion
conclusion_comment
string
primary_metrics_ordered_uuids
secondary_metrics_ordered_uuids
exposure_preaggregation_enabled
boolean
only_count_matured_users
boolean

Example request

POST /api/projects/:project_id/experiments/:id/create_exposure_cohort_for_experiment
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/create_exposure_cohort_for_experiment/\
	-d name="string",\
	-d feature_flag_key="string"
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/create_exposure_cohort_for_experiment/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={
		"name": "string",
		"feature_flag_key": "string"
	}
).json()

Example response

Status 200 No response body

Create experiments duplicate

Mixin for ViewSets to handle ApprovalRequired exceptions from decorated serializers.

This mixin intercepts ApprovalRequired exceptions raised by the @approval_gate decorator on serializer methods and converts them into proper HTTP 409 Conflict responses with change request details.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Request parameters

name
string
description
string
start_date
string
end_date
string
feature_flag_key
string
holdout_id
integer
parameters
secondary_metrics
saved_metrics_ids
array
filters
archived
boolean
deleted
boolean
type
exposure_criteria
metrics
metrics_secondary
stats_config
scheduling_config
_create_in_folder
string
conclusion
conclusion_comment
string
primary_metrics_ordered_uuids
secondary_metrics_ordered_uuids
exposure_preaggregation_enabled
boolean
only_count_matured_users
boolean

Example request

POST /api/projects/:project_id/experiments/:id/duplicate
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/duplicate/\
	-d name="string",\
	-d feature_flag_key="string"
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/duplicate/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={
		"name": "string",
		"feature_flag_key": "string"
	}
).json()

Example response

Status 200 No response body

Create experiments duplicate

Mixin for ViewSets to handle ApprovalRequired exceptions from decorated serializers.

This mixin intercepts ApprovalRequired exceptions raised by the @approval_gate decorator on serializer methods and converts them into proper HTTP 409 Conflict responses with change request details.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Request parameters

name
string
description
string
start_date
string
end_date
string
feature_flag_key
string
holdout_id
integer
parameters
secondary_metrics
saved_metrics_ids
array
filters
archived
boolean
deleted
boolean
type
exposure_criteria
metrics
metrics_secondary
stats_config
scheduling_config
_create_in_folder
string
conclusion
conclusion_comment
string
primary_metrics_ordered_uuids
secondary_metrics_ordered_uuids
exposure_preaggregation_enabled
boolean
only_count_matured_users
boolean

Example request

POST /api/projects/:project_id/experiments/:id/duplicate
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/duplicate/\
	-d name="string",\
	-d feature_flag_key="string"
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/duplicate/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={
		"name": "string",
		"feature_flag_key": "string"
	}
).json()

Example response

Status 200 No response body

Create experiments end

End a running experiment without shipping a variant.

Sets end_date to now and marks the experiment as stopped. The feature flag is NOT modified — users continue to see their assigned variants and exposure events ($feature_flag_called) continue to be recorded. However, only data up to end_date is included in experiment results.

Use this when:

You want to freeze the results window without changing which variant users see.
A variant was already shipped manually via the feature flag UI and the experiment just needs to be marked complete.

The end_date can be adjusted after ending via PATCH if it needs to be backdated (e.g. to match when the flag was actually paused).

Other options:

Use ship_variant to end the experiment AND roll out a single variant to 100%% of users.
Use pause to deactivate the flag without ending the experiment (stops variant assignment but does not freeze results).

Returns 400 if the experiment is not running.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Request parameters

conclusion
conclusion_comment
string

Response

Example request

POST /api/projects/:project_id/experiments/:id/end
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/end/\
	-d conclusion=undefined
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/end/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={}
).json()

Example response

Status 200

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}

Create experiments end

End a running experiment without shipping a variant.

Use this when:

You want to freeze the results window without changing which variant users see.
A variant was already shipped manually via the feature flag UI and the experiment just needs to be marked complete.

The end_date can be adjusted after ending via PATCH if it needs to be backdated (e.g. to match when the flag was actually paused).

Other options:

Use ship_variant to end the experiment AND roll out a single variant to 100%% of users.
Use pause to deactivate the flag without ending the experiment (stops variant assignment but does not freeze results).

Returns 400 if the experiment is not running.

Required API key scopes

experiment:write

Path parameters

id
integer
project_id
string

Request parameters

conclusion
conclusion_comment
string

Response

Example request

POST /api/projects/:project_id/experiments/:id/end
export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl 
    -H 'Content-Type: application/json'\
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    <ph_app_host>/api/projects/:project_id/experiments/:id/end/\
	-d conclusion=undefined
api_key = "[your personal api key]"
project_id = "[your project id]"
response = requests.post(
    "<ph_app_host>/api/projects/{project_id}/experiments/{experiment_id}/end/".format(
        project_id=project_id,
		experiment_id="<the experiment id>"
    ),
    headers={"Authorization": "Bearer {}".format(api_key)},
	data={}
).json()

Example response

Status 200

RESPONSE
{
  "id": 0,
  "name": "string",
  "description": "string",
  "start_date": "2019-08-24T14:15:22Z",
  "end_date": "2019-08-24T14:15:22Z",
  "feature_flag_key": "string",
  "feature_flag": {
    "id": 0,
    "team_id": 0,
    "name": "string",
    "key": "string",
    "filters": {
      "property1": null,
      "property2": null
    },
    "deleted": true,
    "active": true,
    "ensure_experience_continuity": true,
    "has_encrypted_payloads": true,
    "version": -2147483648,
    "evaluation_runtime": "server",
    "bucketing_identifier": "distinct_id",
    "evaluation_contexts": [
      "string"
    ]
  },
  "holdout": {
    "id": 0,
    "name": "string",
    "description": "string",
    "filters": null,
    "created_by": {
      "id": 0,
      "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
      "distinct_id": "string",
      "first_name": "string",
      "last_name": "string",
      "email": "user@example.com",
      "is_email_verified": true,
      "hedgehog_config": {
        "property1": null,
        "property2": null
      },
      "role_at_organization": "engineering"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  },
  "holdout_id": 0,
  "exposure_cohort": 0,
  "parameters": null,
  "secondary_metrics": null,
  "saved_metrics": [
    {
      "id": 0,
      "experiment": 0,
      "saved_metric": 0,
      "metadata": null,
      "created_at": "2019-08-24T14:15:22Z",
      "query": null,
      "name": "string"
    }
  ],
  "saved_metrics_ids": [
    null
  ],
  "filters": null,
  "archived": true,
  "deleted": true,
  "created_by": {
    "id": 0,
    "uuid": "095be615-a8ad-4c33-8e9c-c7612fbf6c9f",
    "distinct_id": "string",
    "first_name": "string",
    "last_name": "string",
    "email": "user@example.com",
    "is_email_verified": true,
    "hedgehog_config": {
      "property1": null,
      "property2": null
    },
    "role_at_organization": "engineering"
  },
  "created_at": "2019-08-24T14:15:22Z",
  "updated_at": "2019-08-24T14:15:22Z",
  "type": "web",
  "exposure_criteria": null,
  "metrics": null,
  "metrics_secondary": null,
  "stats_config": null,
  "scheduling_config": null,
  "_create_in_folder": "string",
  "conclusion": "won",
  "conclusion_comment": "string",
  "primary_metrics_ordered_uuids": null,
  "secondary_metrics_ordered_uuids": null,
  "exposure_preaggregation_enabled": true,
  "only_count_matured_users": true,
  "status": "draft",
  "user_access_level": "string"
}