## List Work Items

**get** `/v1/environments/{environment_id}/work`

Note: these endpoints are called automatically by the pre-built environment worker provided in the SDKs and CLI, for orchestrating sessions with self-hosted sandbox environments. They are included here as a reference; you do not need to invoke them directly.

List work items in an environment.

### Path Parameters

- `environment_id: string`

### Query Parameters

- `limit: optional number`

  Maximum number of work items to return

- `page: optional string`

  Opaque cursor from previous response for pagination

### Header Parameters

- `"anthropic-beta": optional array of AnthropicBeta`

  Optional header to specify the beta version(s) you want to use.

  - `string`

  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 25 more`

    - `"message-batches-2024-09-24"`

    - `"prompt-caching-2024-07-31"`

    - `"computer-use-2024-10-22"`

    - `"computer-use-2025-01-24"`

    - `"pdfs-2024-09-25"`

    - `"token-counting-2024-11-01"`

    - `"token-efficient-tools-2025-02-19"`

    - `"output-128k-2025-02-19"`

    - `"files-api-2025-04-14"`

    - `"mcp-client-2025-04-04"`

    - `"mcp-client-2025-11-20"`

    - `"dev-full-thinking-2025-05-14"`

    - `"interleaved-thinking-2025-05-14"`

    - `"code-execution-2025-05-22"`

    - `"extended-cache-ttl-2025-04-11"`

    - `"context-1m-2025-08-07"`

    - `"context-management-2025-06-27"`

    - `"model-context-window-exceeded-2025-08-26"`

    - `"skills-2025-10-02"`

    - `"fast-mode-2026-02-01"`

    - `"output-300k-2026-03-24"`

    - `"user-profiles-2026-03-24"`

    - `"advisor-tool-2026-03-01"`

    - `"managed-agents-2026-04-01"`

    - `"cache-diagnosis-2026-04-07"`

    - `"thinking-token-count-2026-05-13"`

    - `"server-side-fallback-2026-06-01"`

    - `"fallback-credit-2026-06-01"`

### Returns

- `BetaSelfHostedWorkListResponse object { data, next_page }`

  Response when listing work items with cursor-based pagination.

  - `data: array of BetaSelfHostedWork`

    List of work items

    - `id: string`

      Work identifier (e.g., 'work_...')

    - `acknowledged_at: string`

      RFC 3339 timestamp when the work item was acknowledged and assigned to a self-hosted sandbox

    - `created_at: string`

      RFC 3339 timestamp when work was created

    - `data: BetaSessionWorkData`

      The actual work to be performed

      - `id: string`

        Session identifier (e.g., 'session_...')

      - `type: "session"`

        Type of work data

        - `"session"`

    - `environment_id: string`

      Environment identifier this work belongs to (e.g., `env_...`)

    - `latest_heartbeat_at: string`

      RFC 3339 timestamp of the most recent heartbeat

    - `metadata: map[string]`

      User-provided metadata key-value pairs associated with this work item

    - `started_at: string`

      RFC 3339 timestamp when work execution started

    - `state: "queued" or "starting" or "active" or 2 more`

      Current state of the work item

      - `"queued"`

      - `"starting"`

      - `"active"`

      - `"stopping"`

      - `"stopped"`

    - `stop_requested_at: string`

      RFC 3339 timestamp when stop was requested

    - `stopped_at: string`

      RFC 3339 timestamp when work execution stopped

    - `type: "work"`

      The type of object (always 'work')

      - `"work"`

  - `next_page: string`

    Opaque cursor for fetching the next page of results

### Example

```http
curl https://api.anthropic.com/v1/environments/$ENVIRONMENT_ID/work \
    -H 'anthropic-version: 2023-06-01' \
    -H 'anthropic-beta: managed-agents-2026-04-01' \
    -H "X-Api-Key: $ANTHROPIC_API_KEY"
```

#### Response

```json
{
  "data": [
    {
      "id": "id",
      "acknowledged_at": "acknowledged_at",
      "created_at": "created_at",
      "data": {
        "id": "id",
        "type": "session"
      },
      "environment_id": "environment_id",
      "latest_heartbeat_at": "latest_heartbeat_at",
      "metadata": {
        "foo": "string"
      },
      "started_at": "started_at",
      "state": "queued",
      "stop_requested_at": "stop_requested_at",
      "stopped_at": "stopped_at",
      "type": "work"
    }
  ],
  "next_page": "next_page"
}
```