# Querying the List of Projects Accessible to Federated Users

#### Function

This API is used to query the list of projects accessible to federated users. The project list is used to obtain the scoped token in federated identity authentication mode.

#### URI

GET /v3/OS-FEDERATION/projects

#### Request Parameters

- Parameters in the request header

  Parameter | Mandatory | Type | Description
  --- | --- | --- | ---
  X-Auth-Token | Yes | String | Unscoped token. For details about how to obtain a token, see Obtaining an Unscoped Token (SP Initiated).

  The API described in Querying the List of Projects Accessible to Users is recommended. This API returns the same response format as the API described in this section.

- Example request

      GET /v3/OS-FEDERATION/projects

#### Response Parameters

- Parameters in the response body

  Parameter | Mandatory | Type | Description
  --- | --- | --- | ---
  projects | Yes | array | List of projects.
  links | Yes | Object | Project resource link.

- Example response

      {
        "links": {
          "self": "https://sample.domain.com/v3/OS-FEDERATION/projects",
          "previous": null,
          "next": null
        },
        "projects": [
          {
            "is_domain": false,
            "description": "",
            "links": {
              "self": "https://sample.domain.com/v3/projects/05cf683c351e43518618d9fa96a5efa9"
            },
            "enabled": true,
            "id": "05cf683c351e43518618d9fa96a5efa9",
            "parent_id": "e31ac82d778b4d128cb6fed37fd72cdb",
            "domain_id": "e31ac82d778b4d128cb6fed37fd72cdb",
            "name": "region_name"
          },
          {
            "is_domain": false,
            "description": "",
            "links": {
              "self": "https://sample.domain.com/v3/projects/32b56f108f87418e8219317beb0fff3c"
            },
            "enabled": true,
            "id": "32b56f108f87418e8219317beb0fff3c",
            "parent_id": "e31ac82d778b4d128cb6fed37fd72cdb",
            "domain_id": "e31ac82d778b4d128cb6fed37fd72cdb",
            "name": "MOS"   //Default project name of OBS
          }
        ]
      }

#### Status Codes

Status Code | Description
--- | ---
200 | The request is successful.
400 | The server failed to process the request.
401 | Authentication failed.
403 | Access denied.
405 | The method specified in the request is not allowed for the requested resource.
413 | The request entity is too large.
500 | Internal server error.
503 | Service unavailable.

Parent topic: Project