Experiment Management API Experiment Endpoints

Name	Description
List	List of experiments including their configuration details.
Get details	Get the configuration details of an experiment.
List versions	List all versions for an experiment.
Get version details	Get a specific version for an experiment.
List variants	List all variants for an experiment.
Get variant details	Get a specific variant for an experiment.
Get variant inclusions	Get all inclusions (users) for a variant.
Create variant	Create a new variant for an experiment.
Edit variant	Edit a variant for an experiment.
Remove variant	Remove a variant from an experiment.
Add users to variant	Add users to experiment's variant.
Remove users from variant	Remove users from experiment's variant.
Remove all users from variant	Remove all users from experiment's variant.
Bulk remove users from variant	Bulk remove users from experiment's variant.
List deployments	List all deployments for an experiment.
Add deployment	Add a deployment to an experiment.
Remove deployment	Remove a deployment from an experiment.
Edit	Edit experiment.
Create	Create a new feature experiment.

List

1GET https://experiment.amplitude.com/api/1/experiments

Fetch a list of experiments including their configuration details. Results are ordered with the most recently created items first.

Query parameters

Name	Description
`limit`	The max number of experiments to be returned. Capped at 1000.
`cursor`	The offset to start the "page" of results from.
`includeArchived`	Optional. Boolean. By default it is false. When false, only return active experiments. When true, return active and archived experiments.

Response

A successful request returns a 200 OK response and a list of experiments encoded as JSON in the response body. createdAt and lastModifiedAt are in UTC in ISO 8601 format.

1curl --request GET \
2--url 'https://experiment.amplitude.com/api/1/experiments?limit=1000' \
3--header 'Accept: application/json' \
4--header 'Authorization: Bearer <management-api-key>'

 1{
 2    "experiments": [
 3        {
 4            "id": <id>,
 5            "projectId": <projectId>,
 6            "deployments": [<deploymentId>],
 7            "key": "experiment-key",
 8            "name": "experiment-name",
 9            "decision": null,
10            "decisionReason": null,
11            "description": "description",
12            "enabled": true,
13            "evaluationMode": "remote",
14            "bucketingKey": "amplitude_id",
15            "bucketingSalt": <bucketingSalt>,
16            "bucketingUnit": "User",
17            "variants": [
18                {
19                    "key": "control"
20                },
21                {
22                    "key": "treatment"
23                }
24            ],
25            "rolledOutVariant": null,
26            "rolloutPercentage": 10,
27            "rolloutWeights": {
28                "control": 1,
29                "treatment": 1
30            },
31            "targetSegments": [
32                {
33                    "name": "Segment 1",
34                    "conditions": [
35                        {
36                            "prop": "device_id",
37                            "op": "is",
38                            "type": "property",
39                            "values": [
40                                "(none)"
41                            ]
42                        }
43                    ],
44                    "percentage": 50,
45                    "bucketingKey": "amplitude_id",
46                    "rolloutWeights": {
47                        "control": 1,
48                        "treatment": 1
49                    }
50                }
51            ],
52            "stickyBucketing": false,
53            "state": "planning",
54            "startDate": null,
55            "endDate": null,
56            "experimentType": "a-b-test",
57            "createdBy": "abc@amplitude.com",
58            "lastModifiedBy": "abc@amplitude.com",
59            "createdAt":"2022-09-09T15:29:47.940Z",
60            "lastModifiedAt":"2023-01-25T11:43:41.073Z"
61        },
62        "nextCursor": <cursorId>
63    ]
64}

Get details

1GET https://experiment.amplitude.com/api/1/experiments/<id>

Fetch the configuration details of an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.

Response

A successful request returns a 200 OK response and a JSON object with the experiment's details.

1curl --request GET \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

 1{
 2    "id": <id>,
 3    "projectId": <projectId>,
 4    "deployments": [<deploymentId>],
 5    "key": "experiment-key",
 6    "name": "experiment-key",
 7    "decision": null,
 8    "decisionReason": null,
 9    "description": "save button color",
10    "enabled": true,
11    "evaluationMode": "remote",
12    "bucketingKey": "amplitude_id",
13    "bucketingSalt": <bucketingSalt>,
14    "bucketingUnit": "User",
15    "variants": [
16        {
17            "key": "control"
18        },
19        {
20            "key": "treatment"
21        }
22    ],
23    "rolledOutVariant": null,
24    "rolloutPercentage": 0,
25    "rolloutWeights": {
26        "control": 1,
27        "treatment": 1
28    },
29    "targetSegments": [
30        {
31            "name": "Segment 1",
32            "conditions": [
33                {
34                    "prop": "city",
35                    "op": "is",
36                    "type": "property",
37                    "values": [
38                        "San Francisco"
39                    ]
40                }
41            ],
42            "percentage": 0,
43            "bucketingKey": "amplitude_id",
44            "rolloutWeights": {
45                "control": 1,
46                "treatment": 1
47            }
48        }
49    ],
50    "stickyBucketing": false,
51    "state": "running",
52    "startDate": "2023-07-29",
53    "endDate": null,
54    "experimentType": "a-b-test",
55    "deleted": false,
56    "tags": [],
57    "createdBy: "x@amplitude.com"
58}

List versions

1GET https://experiment.amplitude.com/api/1/experiments/{id}/versions

Fetch a list of all versions for an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.

Response

A successful request returns a 200 OK response and a list of experiment's versions encoded as an array of JSON objects in the response body. Versions are sorted in a descending order.

1curl --request GET \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/versions' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

  1[
  2    {
  3        "createdAt": "2023-07-29T03:30:18.427Z",
  4        "createdBy": <userId>,
  5        "version": 3,
  6        "flagConfig": {
  7            "id": <id>,
  8            "projectId": <projectId>,
  9            "deployments": [<deploymentId>],
 10            "key": "experiment-key",
 11            "name": "experiment-key",
 12            "description": "save button color",
 13            "enabled": true,
 14            "bucketingKey": "amplitude_id",
 15            "variants": [
 16                {
 17                    "key": "control"
 18                },
 19                {
 20                    "key": "treatment"
 21                }
 22            ],
 23            "rolloutWeights": {
 24                "control": 1,
 25                "treatment": 1
 26            },
 27            "targetSegments": [
 28                {
 29                    "name": "Segment 1",
 30                    "conditions": [
 31                        {
 32                            "prop": "city",
 33                            "op": "is",
 34                            "type": "property",
 35                            "values": [
 36                                "San Francisco"
 37                            ]
 38                        }
 39                    ],
 40                    "percentage": 0,
 41                    "bucketingKey": "amplitude_id",
 42                    "rolloutWeights": {
 43                        "control": 1,
 44                        "treatment": 1
 45                    }
 46                }
 47            ],
 48            "stickyBucketing": false,
 49            "state": "decision-made",
 50            "startDate": "2023-07-29",
 51            "endDate": "2023-07-29",
 52            "experimentType": "a-b-test"
 53        }
 54    },
 55    {
 56        "createdAt": "2023-07-29T03:26:23.603Z",
 57        "createdBy": <userId>,
 58        "version": 2,
 59        "flagConfig": {
 60            "id": <id>,
 61            "projectId": <projectId>,
 62            "deployments": [],
 63            "key": "experiment-key",
 64            "name": "experiment-key",
 65            "description": "save button color",
 66            "enabled": false,
 67            "bucketingKey": "amplitude_id",
 68            "variants": [
 69                {
 70                    "key": "control"
 71                },
 72                {
 73                    "key": "treatment"
 74                }
 75            ],
 76            "rolloutWeights": {
 77                "control": 1,
 78                "treatment": 1
 79            },
 80            "targetSegments": [],
 81            "stickyBucketing": false,
 82            "state": "planning",
 83            "startDate": null,
 84            "endDate": null,
 85            "experimentType": "a-b-test"
 86        }
 87    },
 88    {
 89        "createdAt": "2023-07-29T03:25:42.236Z",
 90        "createdBy": <userId>,
 91        "version": 1,
 92        "flagConfig": {
 93            "id": <id>,
 94            "projectId": <projectId>,
 95            "deployments": [],
 96            "key": "experiment-key",
 97            "name": "experiment-key",
 98            "description": "",
 99            "enabled": false,
100            "bucketingKey": "amplitude_id",
101            "variants": [
102                {
103                    "key": "control"
104                },
105                {
106                    "key": "treatment"
107                }
108            ],
109            "rolloutWeights": {
110                "control": 1,
111                "treatment": 1
112            },
113            "targetSegments": [],
114            "stickyBucketing": false,
115            "state": "planning",
116            "startDate": null,
117            "endDate": null,
118            "experimentType": "a-b-test"
119        }
120    }
121]

Get version details

1GET https://experiment.amplitude.com/api/1/experiments/{id}/versions/{versionId}

Fetch details of a specific version of an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.
`versionId`	Required. String. The version's ID.

Response

A successful request returns a 200 OK response and a JSON object with details of the version.

1curl --request GET \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/versions/<versionId>' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

 1{
 2    "createdAt": "2023-07-29T03:30:18.427Z",
 3    "createdBy": <userId>,
 4    "version": 3,
 5    "flagConfig": {
 6        "id": <id>,
 7        "projectId": <projectId>,
 8        "deployments": [<deploymentId>],
 9        "key": "experiment-key",
10        "name": "experiment-key",
11        "description": "save button color",
12        "enabled": true,
13        "bucketingKey": "amplitude_id",
14        "variants": [
15            {
16                "key": "control"
17            },
18            {
19                "key": "treatment"
20            }
21        ],
22        "rolloutWeights": {
23            "control": 1,
24            "treatment": 1
25        },
26        "targetSegments": [
27            {
28                "name": "Segment 1",
29                "conditions": [
30                    {
31                        "prop": "city",
32                        "op": "is",
33                        "type": "property",
34                        "values": [
35                            "San Francisco"
36                        ]
37                    }
38                ],
39                "percentage": 0,
40                "bucketingKey": "amplitude_id",
41                "rolloutWeights": {
42                    "control": 1,
43                    "treatment": 1
44                }
45            }
46        ],
47        "stickyBucketing": false,
48        "state": "decision-made",
49        "startDate": "2023-07-29",
50        "endDate": "2023-07-29",
51        "experimentType": "a-b-test"
52    }
53}

List variants

1GET https://experiment.amplitude.com/api/1/experiments/{id}/variants

Fetch a list of all variants for an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.

Response

A successful request returns a 200 OK response and a list of variants encoded as an array of JSON objects in the response body.

1curl --request GET \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

 1[
 2    {
 3        "key": "control",
 4        "name": "",
 5        "payload": {},
 6        "description": "",
 7        "rolloutWeight": 1
 8    },
 9    {
10        "key": "treatment",
11        "name": "",
12        "payload": {},
13        "description": "",
14        "rolloutWeight": 1
15    }
16]

Get variant details

1GET https://experiment.amplitude.com/api/1/experiments/{id}/variants/{variantKey}

Fetch details of a specific variant of an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.
`variantKey`	Required. String. The variant's key.

Response

A successful request returns a 200 OK response and a JSON object with details of experiment variant.

1curl --request GET \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

1{
2    "key": "control",
3    "name": "",
4    "payload": {},
5    "description": "",
6    "rolloutWeight": 1
7}

Get variant inclusions

1GET https://experiment.amplitude.com/api/1/experiments/{id}/variants/{variantKey}/users

Fetch a list of inclusions for a specific variant of an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.
`variantKey`	Required. String. The variant's key.

Response

A successful request returns a 200 OK response and a list of inclusions of experiment's variant as an array of JSON objects.

1curl --request GET \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>/users' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

1[
2    <user>@<your-company-email>,
3    <userId>
4]

Create variant

1POST https://experiment.amplitude.com/api/1/experiments/{id}/variants

Create a new variant for an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.

Request body

Name	Requirement	Type	Description
`key`	Required	string	The variant key.
`description`	Optional	string	Description for the variant.
`name`	Optional	string	Name for the variant.
`payload`	Optional	JSON	Optional payload. Value must be a valid JSON element.
`rolloutWeight`	Optional	number	Rollout weight for non-targeted users.

Request

1{
2    "key": "new-variant-key",
3    "description": "optional description for variant",
4    "name": "optional name for variant",
5    "payload": {"variant-payload": "example payload"},
6    "rolloutWeight": 0
7}

Response

A successful request returns a 200 OK response and OK text.

Example request

1curl --request POST \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants' \
3    --header 'Content-Type: application/json' \
4    --header 'Accept: application/json' \
5    --header 'Authorization: Bearer <management-api-key>' \
6    --data '{"key":"<key>","name":"<name>","description":"<description>","payload":"<payload>","rolloutWeight":<rolloutWeight>}'

Edit variant

1PATCH https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>

Edit a variant for an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.
`variantKey`	Required. String. The variant's key.

Request body

Name	Requirement	Type	Description
`key`	Optional	string	The variant key.
`description`	Optional	string	Description for the variant.
`name`	Optional	string	Name for the variant.
`payload`	Optional	JSON	Optional payload. Value must be a valid JSON element. This value replaces the existing value for the variant payload.
`rolloutWeight`	Optional	number	Rollout weight for non-targeted users.

Example request

1{
2    "key": "updated-variant-key",
3    "description": "updated-optional description for variant",
4    "name": "optional name for variant",
5    "payload": {"variant-payload": "example payload"},
6    "rolloutWeight": 10
7}

Response

A successful request returns a 200 OK response and OK text.

Request

1curl --request PATCH \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>' \
3    --header 'Content-Type: application/json' \
4    --header 'Accept: application/json' \
5    --header 'Authorization: Bearer <management-api-key>' \
6    --data '{"key":"<key>","name":"<name>","description":"<description>","payload":"<payload>","rolloutWeight":<rolloutWeight>}'

Remove variant

1DELETE https://experiment.amplitude.com/api/1/experiments/{id}/variants/{variantKey}

Remove a variant from an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.
`variantKey`	Required. String. The variant's key.

Response

A successful request returns a 200 OK response and OK text.

Request

1curl --request DELETE \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

Add users to variant

1POST https://experiment.amplitude.com/api/1/experiments/{id}/variants/{variantKey}/users

Add inclusions (users or devices) to experiment's variant.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.
`variantKey`	Required. String. The variant's key.

Example request

1{
2    "inclusions": [<user1>@<your-company-email>, <user2>@<your-company-email>, <userId>]
3}

Request body

Name	Requirement	Type	Description
`inclusions`	Required	object	Contains an string array of user or device ids.

Response

A successful request returns a 200 OK response and OK text.

Request

1curl --request POST \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>/users' \
3    --header 'Content-Type: application/json' \
4    --header 'Accept: application/json' \
5    --header 'Authorization: Bearer <management-api-key>' \
6    --data '{"inclusions":<["id1", "id2", "id3"]>}'

Remove users from variant

1DELETE https://experiment.amplitude.com/api/1/experiments/{id}/variants/{variantKey}/users/{userIndex}

Remove inclusions (users or devices) from experiment's variant.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.
`variantKey`	Required. String. The variant's key.
`userIndex`	Required. String. The user's index. Zero-indexed. Index-based array of users can be obtained via Get variant inclusions

Response

A successful request returns a 200 OK response and OK text.

Request

1curl --request DELETE \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>/users/<userIndex>' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

Remove all users from variant

1DELETE https://experiment.amplitude.com/api/1/experiments/{id}/variants/{variantKey}/users

Remove all inclusions (users or devices) from experiment's variant.

Path variables

Name	Description
`id`	Required. String. The object's ID.
`variantKey`	Required. String. The variant's key.

Response

A successful request returns a 200 OK response and OK text.

Request

1curl --request DELETE \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>/users' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

Bulk remove users from variant

1DELETE https://experiment.amplitude.com/api/1/experiments/{id}/variants/{variantKey}/bulk-delete-users

Bulk remove users or devices from experiment's variant. Limited to 100 per request.

Path variables

Name	Description
`id`	Required. String. The object's ID.
`variantKey`	Required. String. The variant's key.

Request body

Name	Requirement	Type	Description
`users`	Required	object	Contains an string array of user or device ids.

Response

A successful request returns a 200 OK response and OK text.

Request

1curl --request DELETE \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/variants/<variantKey>/bulk-delete-users' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>' \
5    --data '{"users":<["id1", "id2", "id3"]>}'

List deployments

1GET https://experiment.amplitude.com/api/1/experiments/{id}/deployments

List all deployments for an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.

Response

A successful request returns a 200 OK response and an array of JSON objects with experiment's deployment details.

1curl --request GET \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/deployments' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

1[
2    {
3        "id": <id>,
4        "projectId": <projectId>,
5        "label": "rest-api",
6        "key": <key>,
7        "deleted": false
8    }
9]

Add deployment

1POST https://experiment.amplitude.com/api/1/experiments/{id}/deployments

Add a deployment to an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.

Request body

Name	Requirement	Type	Description
`deployments`	Required	object	Contains an string array of deployment ids.

Example request

1{
2    "deployments": ["<deploymentId>"]
3}

Response

A successful request returns a 200 OK response and OK text.

Request

1curl --request POST \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/deployments' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'
5    --data '{"deployments":[<deploymentId>]}'

Remove deployment

1DELETE https://experiment.amplitude.com/api/1/experiments/{id}/deployments/{deploymentId}

Remove a deployment from an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.
`deploymentId`	Required. String. The deployment's ID.

Response

A successful request returns a 200 OK response and OK text.

Request

1curl --request DELETE \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>/deployments/<deploymentId>' \
3    --header 'Accept: application/json' \
4    --header 'Authorization: Bearer <management-api-key>'

Edit

Note

Web Experimentation doesn't support the editing of experiments. Attempts to edit a web experiment return a 501 error.

1PATCH https://experiment.amplitude.com/api/1/experiments/{id}

Edit an experiment.

Path variables

Name	Description
`id`	Required. String. Experiment's ID.

Request body

Name	Requirement	Type	Description
`name`	Optional	string	Name.
`description`	Optional	string	Description.
`bucketingKey`	Optional	string	The user property to bucket the user by.
`bucketingSalt`	Optional	string	Bucketing salt.
`bucketingUnit`	Optional	string	Bucketing unit represented by a group type from the accounts add-on. Used for group level bucketing and analysis.
`evaluationMode`	Optional	string	Evaluation mode for the experiment, either `local` or `remote`.
`rolloutPercentage`	Optional	number	Rollout percentage for non-targeted users. Range 0 - 100.
`targetSegments`	Optional	object	See the `targetSegments` table for more information. When `targetSegments` object is provided, it will replace existing target segments. Note: cohorts are not supported at the moment.
`enabled`	Optional	boolean	Property to activate or deactivate experiment.
`archive`	Optional	boolean	Property to archive or unarchive experiment.
`experimentType`	Optional	string	Experiment type, options include `a-b-test` or `multi-arm-bandit`.
`stickyBucketing`	Optional	boolean	If true, the experiment uses sticky bucketing.
`startDate`	Optional	string	Start date of the experiment in ISO 8601 format.
`endDate`	Optional	string	End date of the experiment in ISO 8601 format. End date can be null.
`exposureEvent`	Optional	object	See the `exposureEvent` table for more information. If set to null, the Amplitude Exposure Event will be used.
`tags`	Optional	string array	A list of tags for the experiment. Tags are added and deleted by the same operation. If you would like to add new tags to the existing ones, you should fetch a list of all experiment tags first.

exposureEvent

Name	Requirement	Type	Description
`event_type`	Required	string	Event type.
`filters`	Required	object array	A list of property filters. See the `filters` table for more information.

filters

Name	Requirement	Type	Description
`group_type`	Optional	string	Group type of the filter; can be null. Can be `User` value or one of the group values, for example `org_id` or `org name`
`subprop_key`	Required	string	Filter's key; can't be null.
`subprop_op`	Required	string	The operation to use in this filter.
`subprop_type`	Required	string	Either `event`, `user` or `group` indicating that the property is either an event, user or group property, respectively.
`subprop_value`	Required	string array	A list of values to filter the event property by.

`subprop_op`

is
is not
contains
does not contain
less
less or equal
greater
greater or equal
glob match
glob does not match

Example request

 1{
 2    "name": "updated name",
 3    "description": "updated description",
 4    "bucketingKey": "amplitude_id",
 5    "bucketingSalt": "<bucketingSalt>",
 6    "evaluationMode": "remote",
 7    "rolloutPercentage": 0,
 8    "enabled": true,
 9    "experimentType": "a-b-test",
10    "stickyBucketing": false,
11    "startDate": "2023-07-31T10:26:00.996Z",
12    "endDate": "2023-09-23T10:26:00.996Z",
13    "tags": ["prod", "staging"],
14    "exposureEvent": {
15        "event_type": "_active",
16        "filters": [
17            {
18                "group_type": "User",
19                "subprop_key": "amplitude_day_of_week",
20                "subprop_op": "is",
21                "subprop_type": "day_time_prop",
22                "subprop_value": [
23                    "Tuesday"
24                ]
25            }
26        ]
27    }
28}

Response

A successful request returns a 200 OK response.

Request

1curl --request PATCH \
2    --url 'https://experiment.amplitude.com/api/1/experiments/<id>' \
3    --header 'Content-Type: application/json' \
4    --header 'Accept: application/json' \
5    --header 'Authorization: Bearer <management-api-key>' \
6    --data '{"enabled":<enabled>,"rolloutPercentage":<rolloutPercentage>}'

Create

1POST https://experiment.amplitude.com/api/1/experiments

Create a new feature experiment.

Request body

Name	Requirement	Type	Description
`projectId`	Required	string	The project's ID.
`key`	Required	string	The flag key.
`name`	Optional	string	The experiment name.
`description`	Optional	string	Description for the experiment.
`variants`	Optional	object array	Array of `variants`.
`bucketingKey`	Optional	string	The user property to bucket the user by.
`rolloutWeights`	Optional	object	Rollout weights for non-targeted users. The object should be a mapping from variant key to rollout weight as an integer. For example: `{ "control": 1, "treatment": 1 }`.
`targetSegments`	Optional	object	See the `targetSegments` table for more information.
`deployments`	Optional	string array	Array of deployments that the experiment should be assigned to.
`evaluationMode`	Optional	string	Experiment evaluation mode; options include `remote` or `local`.
`experimentType`	Optional	string	Experiment type; options include `a-b-test` or `multi-arm-bandit`.

variants

The variants field contains these objects.

Name	Requirement	Type	Description
`key`	Required	string	The key (a.k.a value) of the variant.
`payload`	Optional	JSON	Optional payload. Value must be a valid JSON element.
`name`	Optional	string	The variant name.
`description`	Optional	string	The variant description.

targetSegments

The targetSegments field contains these objects.

Name	Requirement	Type	Description
`name`	Required	string	The segment name.
`conditions`	Required	object array	Array of `conditions`.
`percentage`	Required	number	The allocation percentage for users who match a condition.
`rolloutWeights`	Required	object	A map from variant key to rollout weight. For example: `{ "control": 1, "treatment": 1 }`.

conditions

The conditions field contains these objects.

Name	Requirement	Type	Description
`type`	Required	string	Must have value: `property`
`prop`	Required	string	The property to use in the condition. Prefix custom and free-form properties with `gp:`
`op`	Required	string	The operation to use in this condition.
`values`	Required	string array	The values to use in the operation.

op

A string value representing operations on a property value. Possible values are:

is
is not
contains
does not contain
less
less or equal
greater
greater or equal
set is
set is not
set contains
set does not contain
glob match
glob does not match

Example request

 1{
 2    "projectId":"<projectId>",
 3    "name": "Analyze button clicks experiment",
 4    "key": "analyze-button-clicks-experiment",
 5    "description": "analyze button clicks on the main page",
 6    "variants": [
 7        {
 8            "key": "control"
 9        },
10        {
11            "key": "treatment"
12        }
13    ],
14    "rolloutWeights": {"control": 1, "treatment": 1},
15    "targetSegments": [
16        {
17            "name": "Segment 1",
18            "conditions": [
19                {
20                    "prop": "country",
21                    "op": "is",
22                    "type": "property",
23                    "values": [
24                        "United States"
25                    ]
26                }
27            ],
28            "percentage": 0,
29            "bucketingKey": "amplitude_id",
30            "rolloutWeights": {
31                "control": 1,
32                "treatment": 1
33            }
34        }
35    ],
36    "deployments": ["<deploymentId>"],
37    "evaluationMode": "remote",
38    "experimentType": "a-b-test"
39}

Response

A successful request returns a 200 OK response and a JSON object with the experiment's id and url.

1curl --request POST \
2    --url 'https://experiment.amplitude.com/api/1/experiments' \
3    --header 'Content-Type: application/json' \
4    --header 'Accept: application/json' \
5    --header 'Authorization: Bearer <management-api-key>' \
6    --data '{"projectId":"<projectId>","key":"<key>"}'

1{
2    "id": "<id>",
3    "url": "http://experiment.amplitude.com/amplitude/<projectId>/config/<id>"
4}