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1---2title: Poll for Work3url: https://platform.claude.com/docs/en/api/beta/environments/work/poll4---56# Poll for Work78**GET** `/v1/environments/{environment_id}/work/poll`910Note: 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.1112Long poll for work items in the queue.1314## Path parameters1516- `environment_id: string`1718## Query parameters1920- `block_ms: optional number`2122 How long to wait for work to arrive before returning. Must be 1-999 in milliseconds. Defaults to non-blocking (returns immediately if no work is available).2324 minimum: 12526- `reclaim_older_than_ms: optional number`2728 Reclaim unacknowledged work items older than this many milliseconds. If omitted, uses the default (5000ms).2930 minimum: 13132## Headers3334- `"anthropic-beta": optional array of AnthropicBeta`3536 Optional header to specify the beta version(s) you want to use.3738 - `string`3940 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 43 more`4142 - `"message-batches-2024-09-24"`4344 - `"prompt-caching-2024-07-31"`4546 - `"computer-use-2024-10-22"`4748 - `"computer-use-2025-01-24"`4950 - `"pdfs-2024-09-25"`5152 - `"token-counting-2024-11-01"`5354 - `"token-efficient-tools-2025-02-19"`5556 - `"output-128k-2025-02-19"`5758 - `"files-api-2025-04-14"`5960 - `"mcp-client-2025-04-04"`6162 - `"mcp-client-2025-11-20"`6364 - `"dev-full-thinking-2025-05-14"`6566 - `"interleaved-thinking-2025-05-14"`6768 - `"code-execution-2025-05-22"`6970 - `"extended-cache-ttl-2025-04-11"`7172 - `"context-1m-2025-08-07"`7374 - `"context-management-2025-06-27"`7576 - `"model-context-window-exceeded-2025-08-26"`7778 - `"skills-2025-10-02"`7980 - `"fast-mode-2026-02-01"`8182 - `"output-300k-2026-03-24"`8384 - `"user-profiles-2026-03-24"`8586 - `"user-profiles-2026-08-18"`8788 - `"user-profiles-2026-09-04"`8990 - `"advisor-tool-2026-03-01"`9192 - `"managed-agents-2026-04-01"`9394 - `"cache-diagnosis-2026-04-07"`9596 - `"dreaming-2026-04-21"`9798 - `"thinking-token-count-2026-05-13"`99100 - `"server-side-fallback-2026-06-01"`101102 - `"server-side-fallback-2026-07-01"`103104 - `"fallback-credit-2026-06-01"`105106 - `"fallback-credit-2026-07-01"`107108 - `"agent-memory-2026-07-22"`109110 - `"mid-conversation-tool-changes-2026-07-01"`111112 - `"compact-2026-01-12"`113114 - `"computer-use-2025-11-24"`115116 - `"mcp-tunnels-2026-06-22"`117118 - `"structured-outputs-2025-11-13"`119120 - `"task-budgets-2026-03-13"`121122 - `"thinking-display-updates-2026-08-18"`123124 - `"ce-user-management-2026-07-13"`125126 - `"mid-conversation-output-config-2026-07-01"`127128 - `"thinking-binding-controls-2026-08-01"`129130 - `"mid-conversation-system-clear-at-2026-08-21"`131132 - `"compact-2026-09-04"`133134- `"Anthropic-Worker-ID": optional string`135136 Unique identifier for the specific worker polling, used to track aggregated environment-level work metrics in Console137138## Returns139140- `BetaSelfHostedWork object`141142 Work resource representing a unit of work in a self-hosted environment.143144 Work items are queued when sessions are created or when long-dormant sessions145 receive new messages. The environment worker polls for work to execute in a146 self-hosted sandbox.147148 - `type: "work"`149150 The type of object (always 'work')151152 default: work153154 - `id: string`155156 Work identifier (e.g., 'work_...')157158 - `acknowledged_at: string or null`159160 RFC 3339 timestamp when the work item was acknowledged and assigned to a self-hosted sandbox161162 - `created_at: string`163164 RFC 3339 timestamp when work was created165166 - `data: BetaSessionWorkData`167168 The actual work to be performed169170 - `type: "session"`171172 Type of work data173174 - `id: string`175176 Session identifier (e.g., 'session_...')177178 - `environment_id: string`179180 Environment identifier this work belongs to (e.g., `env_...`)181182 - `latest_heartbeat_at: string or null`183184 RFC 3339 timestamp of the most recent heartbeat185186 - `metadata: map[string]`187188 User-provided metadata key-value pairs associated with this work item189190 - `secret: string or null`191192 Credential payload used by the environment worker to execute this work item. May be populated when polling for work; null on all other retrieval paths.193194 - `started_at: string or null`195196 RFC 3339 timestamp when work execution started197198 - `state: "queued" or "starting" or "active" or 2 more`199200 Current state of the work item201202 - `"queued"`203204 - `"starting"`205206 - `"active"`207208 - `"stopping"`209210 - `"stopped"`211212 - `stop_requested_at: string or null`213214 RFC 3339 timestamp when stop was requested215216 - `stopped_at: string or null`217218 RFC 3339 timestamp when work execution stopped219220## Example221222```bash223curl https://api.anthropic.com/v1/environments/$ENVIRONMENT_ID/work/poll \224 -H 'anthropic-version: 2023-06-01' \225 -H 'anthropic-beta: managed-agents-2026-04-01' \226 -H "X-Api-Key: $ANTHROPIC_API_KEY"227```228229### Response (200)230231```json232{233 "id": "id",234 "acknowledged_at": "acknowledged_at",235 "created_at": "created_at",236 "data": {237 "id": "id",238 "type": "session"239 },240 "environment_id": "environment_id",241 "latest_heartbeat_at": "latest_heartbeat_at",242 "metadata": {243 "foo": "string"244 },245 "secret": "secret",246 "started_at": "started_at",247 "state": "queued",248 "stop_requested_at": "stop_requested_at",249 "stopped_at": "stopped_at",250 "type": "work"251}252```253