## Create Evaluation Group

**post** `/v5/evaluation-groups`

Create a new evaluation group bundling one or more existing evaluations.

The request must list at least one evaluation ID, and duplicate IDs are rejected.
Every listed evaluation is validated for existence and account access before the
group is created; an unknown or inaccessible evaluation ID fails the whole request
with a 400 rather than creating a partial group. The named evaluations are added as
group members in the same transaction, and any supplied row_identifiers (an
evaluation_id-to-column-name mapping used for cross-dataset joins) are persisted
alongside them, ignoring entries for evaluation IDs not in the group. The returned
group includes its members enriched with each evaluation's name, tags, and creation
time. Unlike the PUT and PATCH update endpoints, creation does not trigger any
dashboard-widget recomputation.

### Body Parameters

- `evaluation_ids: array of string`

  List of evaluation IDs to include in the group

- `name: string`

  Name of the evaluation group

- `description: optional string`

  Optional description

- `metadata: optional map[unknown]`

  Optional metadata key-value pairs

- `row_identifiers: optional map[string]`

  Optional mapping of evaluation_id to column name for cross-dataset joins

- `tags: optional array of string`

  The tags associated with the entity

### Returns

- `EvaluationGroup object { id, account_id, created_at, 8 more }`

  Response model for evaluation group

  - `id: string`

    Unique identifier of the evaluation group

  - `account_id: string`

    Account that owns this evaluation group

  - `created_at: string`

    When the group was created

  - `name: string`

    Name of the evaluation group

  - `tags: array of string`

    The tags associated with the entity

  - `deleted_at: optional string`

    When the group was soft-deleted

  - `description: optional string`

    Optional description

  - `members: optional array of EvaluationGroupMember`

    Evaluation members in this group. Returned by default on GET by id; on list endpoints, populated only with the 'members' view.

    - `id: string`

      Unique identifier of the member record

    - `created_at: string`

      When this member was added to the group

    - `evaluation_group_id: string`

      ID of the evaluation group

    - `evaluation_id: string`

      ID of the evaluation

    - `deleted_at: optional string`

      When this membership was soft-deleted (if applicable)

    - `evaluation_created_at: optional string`

      When the evaluation was created

    - `evaluation_name: optional string`

      Name of the evaluation

    - `evaluation_tags: optional array of string`

      Tags of the evaluation

    - `object: optional "evaluation_group.member"`

      - `"evaluation_group.member"`

  - `metadata: optional map[unknown]`

    Optional metadata key-value pairs

  - `object: optional "evaluation_group"`

    - `"evaluation_group"`

  - `row_identifiers: optional array of EvaluationGroupRowIdentifier`

    Row identifier mappings. Populated with 'row_identifiers' view.

    - `column_name: string`

      Name of the column used as row identifier

    - `evaluation_id: string`

      ID of the evaluation

    - `object: optional "evaluation_group.row_identifier"`

      - `"evaluation_group.row_identifier"`

### Example

```http
curl https://api.egp.scale.com/v5/evaluation-groups \
    -H 'Content-Type: application/json' \
    -H "x-api-key: $SGP_API_KEY" \
    -d '{
          "evaluation_ids": [
            "string"
          ],
          "name": "name",
          "metadata": {
            "project": "bar",
            "team": "bar"
          },
          "row_identifiers": {
            "eval-123": "user_id",
            "eval-456": "customer_id"
          }
        }'
```

#### Response

```json
{
  "id": "id",
  "account_id": "account_id",
  "created_at": "2019-12-27T18:11:19.117Z",
  "name": "name",
  "tags": [
    "string"
  ],
  "deleted_at": "2019-12-27T18:11:19.117Z",
  "description": "description",
  "members": [
    {
      "id": "id",
      "created_at": "2019-12-27T18:11:19.117Z",
      "evaluation_group_id": "evaluation_group_id",
      "evaluation_id": "evaluation_id",
      "deleted_at": "2019-12-27T18:11:19.117Z",
      "evaluation_created_at": "2019-12-27T18:11:19.117Z",
      "evaluation_name": "evaluation_name",
      "evaluation_tags": [
        "string"
      ],
      "object": "evaluation_group.member"
    }
  ],
  "metadata": {
    "foo": "bar"
  },
  "object": "evaluation_group",
  "row_identifiers": [
    {
      "column_name": "column_name",
      "evaluation_id": "evaluation_id",
      "object": "evaluation_group.row_identifier"
    }
  ]
}
```