# List who is on a thread

Who is on one thread, the owner first, with each person's name and when they last read it. A thread's roster is what decides who is notified of a new message.

Access class: `def:read`.

## Endpoint

`GET /v1/definitions/{key}/threads/{threadId}/participants`

## Parameters

| Name | In | Type | Required |
| --- | --- | --- | --- |
| key | path | string | Yes |
| threadId | path | string | Yes |
| body | query | null | No |
| params | query | object | No |
| query | query | object | No |

## Responses

### 200

the action's answer

Content type: `application/json`.

```json
{
  "data": [
    {
      "addedAt": "string",
      "email": "string",
      "isMuted": true,
      "lastReadAt": "string",
      "name": "string",
      "role": "string",
      "userId": 1.5
    }
  ]
}
```

### default

a refusal: `{"error": "<what a person needs to read>"}`. 401 no credential, 402 the plan does not include this, 403 the seat does not, 404 the thing does not exist or is not yours to see.

Content type: `application/json`.

```json
{
  "error": "string"
}
```