> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://contentful.com/developers/docs/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://contentful.com/_mcp/server.

# Create a space membership

POST https://api.contentful.com/spaces/{space_id}/space_memberships
Content-Type: application/vnd.contentful.management.v1+json

Use this endpoint to create a space membership (or invite a user to a space). A user can and must be flagged as 'admin' or assigned to certain roles.

Reference: https://contentful.com/developers/docs/references/content-management-api/space-memberships/create-a-space-membership

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Path parameters

- `space_id` (string, required) — ID of the space in form of a string

### Body (application/vnd.contentful.management.v1+json)

This endpoint expects a map from string to any.

- `map from string to any`

## Response

### 201

Created - Resource created successfully

- `map from string to any`

## Examples

**Request**

```json
{
  "admin": false,
  "email": "foo@example.com",
  "roles": [
    {
      "sys": {
        "id": "1ElgCn1mi1UHSBLTP2v4TD",
        "linkType": "Role",
        "type": "Link"
      }
    }
  ]
}
```

**Response**

```json
{
  "admin": false,
  "roles": [
    {
      "sys": {
        "id": "1ElgCn1mi1UHSBLTP2v4TD",
        "linkType": "Role",
        "type": "Link"
      }
    }
  ],
  "sys": {
    "createdAt": "2025-06-19T02:14:19.000Z",
    "createdBy": {
      "sys": {
        "id": "7BslKh9TdKGOK41VmLDjFZ",
        "linkType": "User",
        "type": "Link"
      }
    },
    "id": "0xWanD4AZI2AR35wW9q51n",
    "type": "SpaceMembership",
    "updatedAt": "2025-06-19T02:14:19.000Z",
    "updatedBy": {
      "sys": {
        "id": "4FLrUHftHW3v2BLi9fzfjU",
        "linkType": "User",
        "type": "Link"
      }
    },
    "version": 0
  },
  "user": {
    "sys": {
      "id": "7BslKh9TdKGOK41VmLDjFZ",
      "linkType": "User",
      "type": "Link"
    }
  }
}
```

**SDK Code**

```android Android
// Create the Contentful client.
final CMAClient client =
    new CMAClient
        .Builder()
        .setAccessToken("<access_token>")
        .setSpaceId("<space_id>")
        .setEnvironmentId("<environment_id>")
        .build();

final CMASpaceMembership membership =
    new CMASpaceMembership()
        .setAdmin(true)
        .setEmail("luigi@contentful.com");

client
    .spaceMemberships()
    .async()
    .create(
        "<space_id>",
        membership,
        new CMACallback<CMASpaceMembership>() {
          @Override protected void onSuccess(CMASpaceMembership result) {
            new AlertDialog.Builder(context)
                .setTitle("Contentful")
                .setMessage("Creating a new space membership was successful." +
                    "\n\nResult: " + result)
                .show();
          }

          @Override protected void onFailure(RuntimeException exception) {
            // An error occurred! Inform the user.
            new AlertDialog.Builder(context)
                .setTitle("Contentful Error")
                .setMessage("Could not create a new membership." +
                    "\n\nReason: " + exception.toString())
                .show();

            super.onFailure(exception);
          }
        }
    );
```

```java Java
// Create the Contentful client.
final CMAClient client =
    new CMAClient
        .Builder()
        .setAccessToken("<access_token>")
        .setSpaceId("<space_id>")
        .setEnvironmentId("<environment_id>")
        .build();

final CMASpaceMembership spaceMembership =
    new CMASpaceMembership()
        .setAdmin(true)
        .setEmail("mario@contentful.com");

final CMASpaceMembership createdMembership = client
    .spaceMemberships()
    .create("<space_id>", spaceMembership);
```

```kotlin Kotlin
// Create the Contentful client.
val client = CMAClient.Builder()
    .setAccessToken("<access_token>")
    .setSpaceId("<space_id>")
    .setEnvironmentId("<environment_id>")
    .build()

val spaceMembership = CMASpaceMembership()
        .setAdmin(true)
        .setEmail("mario@contentful.com")

val createdMembership = client
        .spaceMemberships()
        .create("<space_id>", spaceMembership)
```

```swift Swift
We currently don't provide a CMA SDK for this platform.
```

```js-legacy JavaScript (legacy)
import { createClient } from 'contentful-management'

const client = createClient({
  accessToken: '<content_management_api_key>'
}, { type: 'legacy' })


client.getSpace('<space_id>')
.then((space) => space.createSpaceMembership({
  admin: false,
  roles: [
    {
      sys: {
        type: 'Link',
        linkType: 'Role',
        id: '<role_id>'
      }
    }
  ],
  email: 'foo@example.com'
}))
.then((spaceMembership) => console.log(spaceMembership))
.catch(console.error)
```

```javascript JavaScript
import { createClient } from 'contentful-management'

// Client init
const client = contentful.createClient({
  accessToken: '<content_management_api_key>'
})

const spaceMembership = await client.spaceMembership.create(
  {
    spaceId: '<space_id>',
  },
  {
    admin: false,
    roles: [
      {
        sys: {
          type: 'Link',
          linkType: 'Role',
          id: '<role_id>',
        },
      },
    ],
    email: 'foo@example.com',
  }
);
```

```php PHP
$client = new \Contentful\Management\Client('<content_management_api_key>');

$space = $client->getSpaceProxy('<space_id>');

$spaceMembership = new \Contentful\Management\Resource\SpaceMembership();
$spaceMembership->setAdmin(false)
    ->setEmail('foo@example.com')
    ->addRole(new \Contentful\Core\Api\Link('<role_id>', 'Role'));

$space->create($spaceMembership);
```

```ruby Ruby
require 'contentful/management'

client = Contentful::Management::Client.new('<content_management_api_key>')

space_membership = client.space_memberships('<space_id>').create(
    email: 'foo@example.com',
    admin: false,
    roles: [
        {
            sys: {
                type: 'Link',
                linkType: 'Role',
                id: '<role_id>'
            }
        }
    ]
)
```

```python Python
from contentful_management import Client

client = Client('<content_management_api_key>')

space_membership = client.space_memberships('<space_id>').create({
    'email': 'foo@example.com',
    'admin': False,
    'roles': [
        {
            'sys': {
                'type': 'Link',
                'linkType': 'Role',
                'id': '<role_id>'
            }
        }
    ]
})
```

```.net .NET
// This client should only be created once per application.
var httpClient = new HttpClient();

var client = new ContentfulManagementClient(httpClient, "<content_management_api_key>", "<space_id>");

var newMembership = new SpaceMembership();

newMembership.Roles = new List<string>() {
    "<role_id>"
};

newMembership.Admin = true;

newMembership.User = new User() { // The user must already exist. It cannot be automatically created through the membership.
    SystemProperties = new SystemProperties() {
        Id = "<user_id>",
        LinkType = "User",
        Type = "Link"
    }
};

await client.CreateSpaceMembership(newMembership);
```