# Work

## Get Work Item

`client.Beta.Environments.Work.Get(ctx, workID, params) (*BetaSelfHostedWork, error)`

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

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.

Retrieve detailed information about a specific work item.

### Parameters

- `workID string`

- `params BetaEnvironmentWorkGetParams`

  - `EnvironmentID param.Field[string]`

    Path param

  - `Betas param.Field[[]AnthropicBeta]`

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

    - `string`

    - `type AnthropicBeta string`

      - `const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"`

      - `const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"`

      - `const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"`

      - `const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"`

      - `const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"`

      - `const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"`

      - `const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"`

      - `const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"`

      - `const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"`

      - `const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"`

      - `const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"`

      - `const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"`

      - `const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"`

      - `const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"`

      - `const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"`

      - `const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"`

      - `const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"`

      - `const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"`

      - `const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"`

      - `const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"`

      - `const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"`

      - `const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"`

      - `const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"`

      - `const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"`

      - `const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"`

      - `const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"`

      - `const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"`

      - `const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"`

### Returns

- `type BetaSelfHostedWork struct{…}`

  Work resource representing a unit of work in a self-hosted environment.

  Work items are queued when sessions are created or when long-dormant sessions
  receive new messages. The environment worker polls for work to execute in a
  self-hosted sandbox.

  - `ID string`

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

  - `AcknowledgedAt string`

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

  - `CreatedAt 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

      - `const SessionSession Session = "session"`

  - `EnvironmentID string`

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

  - `LatestHeartbeatAt string`

    RFC 3339 timestamp of the most recent heartbeat

  - `Metadata map[string, string]`

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

  - `StartedAt string`

    RFC 3339 timestamp when work execution started

  - `State BetaSelfHostedWorkState`

    Current state of the work item

    - `const BetaSelfHostedWorkStateQueued BetaSelfHostedWorkState = "queued"`

    - `const BetaSelfHostedWorkStateStarting BetaSelfHostedWorkState = "starting"`

    - `const BetaSelfHostedWorkStateActive BetaSelfHostedWorkState = "active"`

    - `const BetaSelfHostedWorkStateStopping BetaSelfHostedWorkState = "stopping"`

    - `const BetaSelfHostedWorkStateStopped BetaSelfHostedWorkState = "stopped"`

  - `StopRequestedAt string`

    RFC 3339 timestamp when stop was requested

  - `StoppedAt string`

    RFC 3339 timestamp when work execution stopped

  - `Type Work`

    The type of object (always 'work')

    - `const WorkWork Work = "work"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey("my-anthropic-api-key"),
  )
  betaSelfHostedWork, err := client.Beta.Environments.Work.Get(
    context.TODO(),
    "work_id",
    anthropic.BetaEnvironmentWorkGetParams{
      EnvironmentID: "env_011CZkZ9X2dpNyB7HsEFoRfW",
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", betaSelfHostedWork.ID)
}
```

#### Response

```json
{
  "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"
}
```

## Poll for Work

`client.Beta.Environments.Work.Poll(ctx, environmentID, params) (*BetaSelfHostedWork, error)`

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

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.

Long poll for work items in the queue.

### Parameters

- `environmentID string`

- `params BetaEnvironmentWorkPollParams`

  - `BlockMs param.Field[int64]`

    Query param: 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).

  - `ReclaimOlderThanMs param.Field[int64]`

    Query param: Reclaim unacknowledged work items older than this many milliseconds. If omitted, uses the default (5000ms).

  - `Betas param.Field[[]AnthropicBeta]`

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

    - `string`

    - `type AnthropicBeta string`

      - `const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"`

      - `const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"`

      - `const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"`

      - `const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"`

      - `const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"`

      - `const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"`

      - `const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"`

      - `const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"`

      - `const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"`

      - `const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"`

      - `const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"`

      - `const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"`

      - `const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"`

      - `const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"`

      - `const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"`

      - `const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"`

      - `const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"`

      - `const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"`

      - `const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"`

      - `const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"`

      - `const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"`

      - `const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"`

      - `const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"`

      - `const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"`

      - `const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"`

      - `const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"`

      - `const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"`

      - `const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"`

  - `AnthropicWorkerID param.Field[string]`

    Header param: Unique identifier for the specific worker polling, used to track aggregated environment-level work metrics in Console

### Returns

- `type BetaSelfHostedWork struct{…}`

  Work resource representing a unit of work in a self-hosted environment.

  Work items are queued when sessions are created or when long-dormant sessions
  receive new messages. The environment worker polls for work to execute in a
  self-hosted sandbox.

  - `ID string`

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

  - `AcknowledgedAt string`

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

  - `CreatedAt 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

      - `const SessionSession Session = "session"`

  - `EnvironmentID string`

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

  - `LatestHeartbeatAt string`

    RFC 3339 timestamp of the most recent heartbeat

  - `Metadata map[string, string]`

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

  - `StartedAt string`

    RFC 3339 timestamp when work execution started

  - `State BetaSelfHostedWorkState`

    Current state of the work item

    - `const BetaSelfHostedWorkStateQueued BetaSelfHostedWorkState = "queued"`

    - `const BetaSelfHostedWorkStateStarting BetaSelfHostedWorkState = "starting"`

    - `const BetaSelfHostedWorkStateActive BetaSelfHostedWorkState = "active"`

    - `const BetaSelfHostedWorkStateStopping BetaSelfHostedWorkState = "stopping"`

    - `const BetaSelfHostedWorkStateStopped BetaSelfHostedWorkState = "stopped"`

  - `StopRequestedAt string`

    RFC 3339 timestamp when stop was requested

  - `StoppedAt string`

    RFC 3339 timestamp when work execution stopped

  - `Type Work`

    The type of object (always 'work')

    - `const WorkWork Work = "work"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey("my-anthropic-api-key"),
  )
  betaSelfHostedWork, err := client.Beta.Environments.Work.Poll(
    context.TODO(),
    "env_011CZkZ9X2dpNyB7HsEFoRfW",
    anthropic.BetaEnvironmentWorkPollParams{

    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", betaSelfHostedWork.ID)
}
```

#### Response

```json
{
  "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"
}
```

## Acknowledge Work

`client.Beta.Environments.Work.Ack(ctx, workID, params) (*BetaSelfHostedWork, error)`

**post** `/v1/environments/{environment_id}/work/{work_id}/ack`

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.

Acknowledge receipt of a work item, transitioning it from 'queued' to 'starting' and removing it from the queue.

### Parameters

- `workID string`

- `params BetaEnvironmentWorkAckParams`

  - `EnvironmentID param.Field[string]`

    Path param

  - `Betas param.Field[[]AnthropicBeta]`

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

    - `string`

    - `type AnthropicBeta string`

      - `const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"`

      - `const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"`

      - `const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"`

      - `const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"`

      - `const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"`

      - `const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"`

      - `const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"`

      - `const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"`

      - `const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"`

      - `const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"`

      - `const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"`

      - `const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"`

      - `const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"`

      - `const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"`

      - `const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"`

      - `const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"`

      - `const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"`

      - `const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"`

      - `const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"`

      - `const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"`

      - `const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"`

      - `const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"`

      - `const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"`

      - `const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"`

      - `const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"`

      - `const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"`

      - `const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"`

      - `const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"`

### Returns

- `type BetaSelfHostedWork struct{…}`

  Work resource representing a unit of work in a self-hosted environment.

  Work items are queued when sessions are created or when long-dormant sessions
  receive new messages. The environment worker polls for work to execute in a
  self-hosted sandbox.

  - `ID string`

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

  - `AcknowledgedAt string`

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

  - `CreatedAt 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

      - `const SessionSession Session = "session"`

  - `EnvironmentID string`

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

  - `LatestHeartbeatAt string`

    RFC 3339 timestamp of the most recent heartbeat

  - `Metadata map[string, string]`

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

  - `StartedAt string`

    RFC 3339 timestamp when work execution started

  - `State BetaSelfHostedWorkState`

    Current state of the work item

    - `const BetaSelfHostedWorkStateQueued BetaSelfHostedWorkState = "queued"`

    - `const BetaSelfHostedWorkStateStarting BetaSelfHostedWorkState = "starting"`

    - `const BetaSelfHostedWorkStateActive BetaSelfHostedWorkState = "active"`

    - `const BetaSelfHostedWorkStateStopping BetaSelfHostedWorkState = "stopping"`

    - `const BetaSelfHostedWorkStateStopped BetaSelfHostedWorkState = "stopped"`

  - `StopRequestedAt string`

    RFC 3339 timestamp when stop was requested

  - `StoppedAt string`

    RFC 3339 timestamp when work execution stopped

  - `Type Work`

    The type of object (always 'work')

    - `const WorkWork Work = "work"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey("my-anthropic-api-key"),
  )
  betaSelfHostedWork, err := client.Beta.Environments.Work.Ack(
    context.TODO(),
    "work_id",
    anthropic.BetaEnvironmentWorkAckParams{
      EnvironmentID: "env_011CZkZ9X2dpNyB7HsEFoRfW",
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", betaSelfHostedWork.ID)
}
```

#### Response

```json
{
  "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"
}
```

## Record Heartbeat

`client.Beta.Environments.Work.Heartbeat(ctx, workID, params) (*BetaSelfHostedWorkHeartbeatResponse, error)`

**post** `/v1/environments/{environment_id}/work/{work_id}/heartbeat`

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.

Record a heartbeat for a work item to maintain the lease.

### Parameters

- `workID string`

- `params BetaEnvironmentWorkHeartbeatParams`

  - `EnvironmentID param.Field[string]`

    Path param

  - `DesiredTTLSeconds param.Field[int64]`

    Query param: Desired TTL in seconds

  - `ExpectedLastHeartbeat param.Field[string]`

    Query param: Expected last_heartbeat for conditional update (optimistic concurrency). Use literal 'NO_HEARTBEAT' to claim an unclaimed lease (first heartbeat). For subsequent heartbeats, echo the server's previous last_heartbeat value exactly. Returns 412 Precondition Failed if the actual value doesn't match.

  - `Betas param.Field[[]AnthropicBeta]`

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

    - `string`

    - `type AnthropicBeta string`

      - `const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"`

      - `const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"`

      - `const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"`

      - `const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"`

      - `const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"`

      - `const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"`

      - `const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"`

      - `const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"`

      - `const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"`

      - `const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"`

      - `const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"`

      - `const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"`

      - `const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"`

      - `const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"`

      - `const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"`

      - `const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"`

      - `const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"`

      - `const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"`

      - `const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"`

      - `const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"`

      - `const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"`

      - `const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"`

      - `const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"`

      - `const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"`

      - `const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"`

      - `const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"`

      - `const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"`

      - `const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"`

### Returns

- `type BetaSelfHostedWorkHeartbeatResponse struct{…}`

  Response after recording a heartbeat for a work item.

  - `LastHeartbeat string`

    RFC 3339 timestamp of the actual heartbeat from DB

  - `LeaseExtended bool`

    Whether the heartbeat succeeded in extending the lease

  - `State BetaSelfHostedWorkHeartbeatResponseState`

    Current state of the work item (active/stopping/stopped)

    - `const BetaSelfHostedWorkHeartbeatResponseStateQueued BetaSelfHostedWorkHeartbeatResponseState = "queued"`

    - `const BetaSelfHostedWorkHeartbeatResponseStateStarting BetaSelfHostedWorkHeartbeatResponseState = "starting"`

    - `const BetaSelfHostedWorkHeartbeatResponseStateActive BetaSelfHostedWorkHeartbeatResponseState = "active"`

    - `const BetaSelfHostedWorkHeartbeatResponseStateStopping BetaSelfHostedWorkHeartbeatResponseState = "stopping"`

    - `const BetaSelfHostedWorkHeartbeatResponseStateStopped BetaSelfHostedWorkHeartbeatResponseState = "stopped"`

  - `TTLSeconds int64`

    Effective TTL applied to the lease

  - `Type WorkHeartbeat`

    The type of response

    - `const WorkHeartbeatWorkHeartbeat WorkHeartbeat = "work_heartbeat"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey("my-anthropic-api-key"),
  )
  betaSelfHostedWorkHeartbeatResponse, err := client.Beta.Environments.Work.Heartbeat(
    context.TODO(),
    "work_id",
    anthropic.BetaEnvironmentWorkHeartbeatParams{
      EnvironmentID: "env_011CZkZ9X2dpNyB7HsEFoRfW",
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", betaSelfHostedWorkHeartbeatResponse.LastHeartbeat)
}
```

#### Response

```json
{
  "last_heartbeat": "last_heartbeat",
  "lease_extended": true,
  "state": "queued",
  "ttl_seconds": 0,
  "type": "work_heartbeat"
}
```

## Stop Work

`client.Beta.Environments.Work.Stop(ctx, workID, params) (*BetaSelfHostedWork, error)`

**post** `/v1/environments/{environment_id}/work/{work_id}/stop`

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.

Stop a work item, initiating graceful or forced shutdown.

### Parameters

- `workID string`

- `params BetaEnvironmentWorkStopParams`

  - `EnvironmentID param.Field[string]`

    Path param

  - `BetaSelfHostedWorkStopRequest param.Field[BetaSelfHostedWorkStopRequest]`

    Body param: Request to stop a work item.

  - `Betas param.Field[[]AnthropicBeta]`

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

    - `string`

    - `type AnthropicBeta string`

      - `const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"`

      - `const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"`

      - `const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"`

      - `const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"`

      - `const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"`

      - `const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"`

      - `const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"`

      - `const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"`

      - `const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"`

      - `const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"`

      - `const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"`

      - `const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"`

      - `const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"`

      - `const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"`

      - `const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"`

      - `const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"`

      - `const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"`

      - `const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"`

      - `const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"`

      - `const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"`

      - `const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"`

      - `const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"`

      - `const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"`

      - `const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"`

      - `const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"`

      - `const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"`

      - `const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"`

      - `const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"`

### Returns

- `type BetaSelfHostedWork struct{…}`

  Work resource representing a unit of work in a self-hosted environment.

  Work items are queued when sessions are created or when long-dormant sessions
  receive new messages. The environment worker polls for work to execute in a
  self-hosted sandbox.

  - `ID string`

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

  - `AcknowledgedAt string`

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

  - `CreatedAt 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

      - `const SessionSession Session = "session"`

  - `EnvironmentID string`

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

  - `LatestHeartbeatAt string`

    RFC 3339 timestamp of the most recent heartbeat

  - `Metadata map[string, string]`

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

  - `StartedAt string`

    RFC 3339 timestamp when work execution started

  - `State BetaSelfHostedWorkState`

    Current state of the work item

    - `const BetaSelfHostedWorkStateQueued BetaSelfHostedWorkState = "queued"`

    - `const BetaSelfHostedWorkStateStarting BetaSelfHostedWorkState = "starting"`

    - `const BetaSelfHostedWorkStateActive BetaSelfHostedWorkState = "active"`

    - `const BetaSelfHostedWorkStateStopping BetaSelfHostedWorkState = "stopping"`

    - `const BetaSelfHostedWorkStateStopped BetaSelfHostedWorkState = "stopped"`

  - `StopRequestedAt string`

    RFC 3339 timestamp when stop was requested

  - `StoppedAt string`

    RFC 3339 timestamp when work execution stopped

  - `Type Work`

    The type of object (always 'work')

    - `const WorkWork Work = "work"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey("my-anthropic-api-key"),
  )
  betaSelfHostedWork, err := client.Beta.Environments.Work.Stop(
    context.TODO(),
    "work_id",
    anthropic.BetaEnvironmentWorkStopParams{
      EnvironmentID: "env_011CZkZ9X2dpNyB7HsEFoRfW",
      BetaSelfHostedWorkStopRequest: anthropic.BetaSelfHostedWorkStopRequestParam{

      },
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", betaSelfHostedWork.ID)
}
```

#### Response

```json
{
  "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"
}
```

## List Work Items

`client.Beta.Environments.Work.List(ctx, environmentID, params) (*PageCursor[BetaSelfHostedWork], error)`

**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.

### Parameters

- `environmentID string`

- `params BetaEnvironmentWorkListParams`

  - `Limit param.Field[int64]`

    Query param: Maximum number of work items to return

  - `Page param.Field[string]`

    Query param: Opaque cursor from previous response for pagination

  - `Betas param.Field[[]AnthropicBeta]`

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

    - `string`

    - `type AnthropicBeta string`

      - `const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"`

      - `const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"`

      - `const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"`

      - `const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"`

      - `const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"`

      - `const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"`

      - `const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"`

      - `const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"`

      - `const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"`

      - `const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"`

      - `const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"`

      - `const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"`

      - `const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"`

      - `const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"`

      - `const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"`

      - `const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"`

      - `const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"`

      - `const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"`

      - `const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"`

      - `const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"`

      - `const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"`

      - `const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"`

      - `const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"`

      - `const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"`

      - `const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"`

      - `const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"`

      - `const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"`

      - `const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"`

### Returns

- `type BetaSelfHostedWork struct{…}`

  Work resource representing a unit of work in a self-hosted environment.

  Work items are queued when sessions are created or when long-dormant sessions
  receive new messages. The environment worker polls for work to execute in a
  self-hosted sandbox.

  - `ID string`

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

  - `AcknowledgedAt string`

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

  - `CreatedAt 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

      - `const SessionSession Session = "session"`

  - `EnvironmentID string`

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

  - `LatestHeartbeatAt string`

    RFC 3339 timestamp of the most recent heartbeat

  - `Metadata map[string, string]`

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

  - `StartedAt string`

    RFC 3339 timestamp when work execution started

  - `State BetaSelfHostedWorkState`

    Current state of the work item

    - `const BetaSelfHostedWorkStateQueued BetaSelfHostedWorkState = "queued"`

    - `const BetaSelfHostedWorkStateStarting BetaSelfHostedWorkState = "starting"`

    - `const BetaSelfHostedWorkStateActive BetaSelfHostedWorkState = "active"`

    - `const BetaSelfHostedWorkStateStopping BetaSelfHostedWorkState = "stopping"`

    - `const BetaSelfHostedWorkStateStopped BetaSelfHostedWorkState = "stopped"`

  - `StopRequestedAt string`

    RFC 3339 timestamp when stop was requested

  - `StoppedAt string`

    RFC 3339 timestamp when work execution stopped

  - `Type Work`

    The type of object (always 'work')

    - `const WorkWork Work = "work"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey("my-anthropic-api-key"),
  )
  page, err := client.Beta.Environments.Work.List(
    context.TODO(),
    "env_011CZkZ9X2dpNyB7HsEFoRfW",
    anthropic.BetaEnvironmentWorkListParams{

    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", page)
}
```

#### 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"
}
```

## Update Work Item

`client.Beta.Environments.Work.Update(ctx, workID, params) (*BetaSelfHostedWork, error)`

**post** `/v1/environments/{environment_id}/work/{work_id}`

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.

Update work item metadata with merge semantics.

### Parameters

- `workID string`

- `params BetaEnvironmentWorkUpdateParams`

  - `EnvironmentID param.Field[string]`

    Path param

  - `BetaSelfHostedWorkUpdateRequest param.Field[BetaSelfHostedWorkUpdateRequest]`

    Body param: Request to update work item metadata.

  - `Betas param.Field[[]AnthropicBeta]`

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

    - `string`

    - `type AnthropicBeta string`

      - `const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"`

      - `const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"`

      - `const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"`

      - `const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"`

      - `const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"`

      - `const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"`

      - `const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"`

      - `const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"`

      - `const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"`

      - `const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"`

      - `const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"`

      - `const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"`

      - `const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"`

      - `const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"`

      - `const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"`

      - `const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"`

      - `const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"`

      - `const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"`

      - `const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"`

      - `const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"`

      - `const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"`

      - `const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"`

      - `const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"`

      - `const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"`

      - `const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"`

      - `const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"`

      - `const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"`

      - `const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"`

### Returns

- `type BetaSelfHostedWork struct{…}`

  Work resource representing a unit of work in a self-hosted environment.

  Work items are queued when sessions are created or when long-dormant sessions
  receive new messages. The environment worker polls for work to execute in a
  self-hosted sandbox.

  - `ID string`

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

  - `AcknowledgedAt string`

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

  - `CreatedAt 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

      - `const SessionSession Session = "session"`

  - `EnvironmentID string`

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

  - `LatestHeartbeatAt string`

    RFC 3339 timestamp of the most recent heartbeat

  - `Metadata map[string, string]`

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

  - `StartedAt string`

    RFC 3339 timestamp when work execution started

  - `State BetaSelfHostedWorkState`

    Current state of the work item

    - `const BetaSelfHostedWorkStateQueued BetaSelfHostedWorkState = "queued"`

    - `const BetaSelfHostedWorkStateStarting BetaSelfHostedWorkState = "starting"`

    - `const BetaSelfHostedWorkStateActive BetaSelfHostedWorkState = "active"`

    - `const BetaSelfHostedWorkStateStopping BetaSelfHostedWorkState = "stopping"`

    - `const BetaSelfHostedWorkStateStopped BetaSelfHostedWorkState = "stopped"`

  - `StopRequestedAt string`

    RFC 3339 timestamp when stop was requested

  - `StoppedAt string`

    RFC 3339 timestamp when work execution stopped

  - `Type Work`

    The type of object (always 'work')

    - `const WorkWork Work = "work"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey("my-anthropic-api-key"),
  )
  betaSelfHostedWork, err := client.Beta.Environments.Work.Update(
    context.TODO(),
    "work_id",
    anthropic.BetaEnvironmentWorkUpdateParams{
      EnvironmentID: "env_011CZkZ9X2dpNyB7HsEFoRfW",
      BetaSelfHostedWorkUpdateRequest: anthropic.BetaSelfHostedWorkUpdateRequestParam{
        Metadata: map[string]string{
        "foo": "string",
        },
      },
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", betaSelfHostedWork.ID)
}
```

#### Response

```json
{
  "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"
}
```

## Get Queue Statistics

`client.Beta.Environments.Work.Stats(ctx, environmentID, query) (*BetaSelfHostedWorkQueueStats, error)`

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

Get statistics about the work queue for an environment.

### Parameters

- `environmentID string`

- `query BetaEnvironmentWorkStatsParams`

  - `Betas param.Field[[]AnthropicBeta]`

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

    - `string`

    - `type AnthropicBeta string`

      - `const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"`

      - `const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"`

      - `const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"`

      - `const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"`

      - `const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"`

      - `const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"`

      - `const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"`

      - `const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"`

      - `const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"`

      - `const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"`

      - `const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"`

      - `const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"`

      - `const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"`

      - `const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"`

      - `const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"`

      - `const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"`

      - `const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"`

      - `const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"`

      - `const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"`

      - `const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"`

      - `const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"`

      - `const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"`

      - `const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"`

      - `const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"`

      - `const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"`

      - `const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"`

      - `const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"`

      - `const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"`

### Returns

- `type BetaSelfHostedWorkQueueStats struct{…}`

  Statistics about the work queue for an environment.

  Uses Redis Stream consumer group metrics for O(1) queries.

  - `Depth int64`

    Number of work items waiting to be picked up (lag from consumer group)

  - `OldestQueuedAt string`

    RFC 3339 timestamp of oldest item in the work stream (includes both queued and pending items), null if stream empty

  - `Pending int64`

    Number of work items being processed (polled but not acknowledged)

  - `Type WorkQueueStats`

    The type of object

    - `const WorkQueueStatsWorkQueueStats WorkQueueStats = "work_queue_stats"`

  - `WorkersPolling int64`

    Number of workers that have polled for work in the last 30 seconds. Requires worker_id to be sent with poll requests.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey("my-anthropic-api-key"),
  )
  betaSelfHostedWorkQueueStats, err := client.Beta.Environments.Work.Stats(
    context.TODO(),
    "env_011CZkZ9X2dpNyB7HsEFoRfW",
    anthropic.BetaEnvironmentWorkStatsParams{

    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", betaSelfHostedWorkQueueStats.Depth)
}
```

#### Response

```json
{
  "depth": 0,
  "oldest_queued_at": "oldest_queued_at",
  "pending": 0,
  "type": "work_queue_stats",
  "workers_polling": 0
}
```

## Domain Types

### Beta Self Hosted Work

- `type BetaSelfHostedWork struct{…}`

  Work resource representing a unit of work in a self-hosted environment.

  Work items are queued when sessions are created or when long-dormant sessions
  receive new messages. The environment worker polls for work to execute in a
  self-hosted sandbox.

  - `ID string`

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

  - `AcknowledgedAt string`

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

  - `CreatedAt 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

      - `const SessionSession Session = "session"`

  - `EnvironmentID string`

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

  - `LatestHeartbeatAt string`

    RFC 3339 timestamp of the most recent heartbeat

  - `Metadata map[string, string]`

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

  - `StartedAt string`

    RFC 3339 timestamp when work execution started

  - `State BetaSelfHostedWorkState`

    Current state of the work item

    - `const BetaSelfHostedWorkStateQueued BetaSelfHostedWorkState = "queued"`

    - `const BetaSelfHostedWorkStateStarting BetaSelfHostedWorkState = "starting"`

    - `const BetaSelfHostedWorkStateActive BetaSelfHostedWorkState = "active"`

    - `const BetaSelfHostedWorkStateStopping BetaSelfHostedWorkState = "stopping"`

    - `const BetaSelfHostedWorkStateStopped BetaSelfHostedWorkState = "stopped"`

  - `StopRequestedAt string`

    RFC 3339 timestamp when stop was requested

  - `StoppedAt string`

    RFC 3339 timestamp when work execution stopped

  - `Type Work`

    The type of object (always 'work')

    - `const WorkWork Work = "work"`

### Beta Self Hosted Work Heartbeat Response

- `type BetaSelfHostedWorkHeartbeatResponse struct{…}`

  Response after recording a heartbeat for a work item.

  - `LastHeartbeat string`

    RFC 3339 timestamp of the actual heartbeat from DB

  - `LeaseExtended bool`

    Whether the heartbeat succeeded in extending the lease

  - `State BetaSelfHostedWorkHeartbeatResponseState`

    Current state of the work item (active/stopping/stopped)

    - `const BetaSelfHostedWorkHeartbeatResponseStateQueued BetaSelfHostedWorkHeartbeatResponseState = "queued"`

    - `const BetaSelfHostedWorkHeartbeatResponseStateStarting BetaSelfHostedWorkHeartbeatResponseState = "starting"`

    - `const BetaSelfHostedWorkHeartbeatResponseStateActive BetaSelfHostedWorkHeartbeatResponseState = "active"`

    - `const BetaSelfHostedWorkHeartbeatResponseStateStopping BetaSelfHostedWorkHeartbeatResponseState = "stopping"`

    - `const BetaSelfHostedWorkHeartbeatResponseStateStopped BetaSelfHostedWorkHeartbeatResponseState = "stopped"`

  - `TTLSeconds int64`

    Effective TTL applied to the lease

  - `Type WorkHeartbeat`

    The type of response

    - `const WorkHeartbeatWorkHeartbeat WorkHeartbeat = "work_heartbeat"`

### Beta Self Hosted Work List Response

- `type BetaSelfHostedWorkListResponse struct{…}`

  Response when listing work items with cursor-based pagination.

  - `Data []BetaSelfHostedWork`

    List of work items

    - `ID string`

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

    - `AcknowledgedAt string`

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

    - `CreatedAt 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

        - `const SessionSession Session = "session"`

    - `EnvironmentID string`

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

    - `LatestHeartbeatAt string`

      RFC 3339 timestamp of the most recent heartbeat

    - `Metadata map[string, string]`

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

    - `StartedAt string`

      RFC 3339 timestamp when work execution started

    - `State BetaSelfHostedWorkState`

      Current state of the work item

      - `const BetaSelfHostedWorkStateQueued BetaSelfHostedWorkState = "queued"`

      - `const BetaSelfHostedWorkStateStarting BetaSelfHostedWorkState = "starting"`

      - `const BetaSelfHostedWorkStateActive BetaSelfHostedWorkState = "active"`

      - `const BetaSelfHostedWorkStateStopping BetaSelfHostedWorkState = "stopping"`

      - `const BetaSelfHostedWorkStateStopped BetaSelfHostedWorkState = "stopped"`

    - `StopRequestedAt string`

      RFC 3339 timestamp when stop was requested

    - `StoppedAt string`

      RFC 3339 timestamp when work execution stopped

    - `Type Work`

      The type of object (always 'work')

      - `const WorkWork Work = "work"`

  - `NextPage string`

    Opaque cursor for fetching the next page of results

### Beta Self Hosted Work Queue Stats

- `type BetaSelfHostedWorkQueueStats struct{…}`

  Statistics about the work queue for an environment.

  Uses Redis Stream consumer group metrics for O(1) queries.

  - `Depth int64`

    Number of work items waiting to be picked up (lag from consumer group)

  - `OldestQueuedAt string`

    RFC 3339 timestamp of oldest item in the work stream (includes both queued and pending items), null if stream empty

  - `Pending int64`

    Number of work items being processed (polled but not acknowledged)

  - `Type WorkQueueStats`

    The type of object

    - `const WorkQueueStatsWorkQueueStats WorkQueueStats = "work_queue_stats"`

  - `WorkersPolling int64`

    Number of workers that have polled for work in the last 30 seconds. Requires worker_id to be sent with poll requests.

### Beta Self Hosted Work Stop Request

- `type BetaSelfHostedWorkStopRequest struct{…}`

  Request to stop a work item.

  - `Force bool`

    If true, immediately stop work without graceful shutdown

### Beta Self Hosted Work Update Request

- `type BetaSelfHostedWorkUpdateRequest struct{…}`

  Request to update work item metadata.

  - `Metadata map[string, string]`

    Metadata patch. Set a key to a string to upsert it, or to null to delete it. Omit the field to preserve existing metadata.

### Beta Session Work Data

- `type BetaSessionWorkData struct{…}`

  Work data for session work items.

  This resource type is used when work represents a session that needs to be executed
  in a self-hosted environment.

  - `ID string`

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

  - `Type Session`

    Type of work data

    - `const SessionSession Session = "session"`