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HomeDocsClaude Developer Platform 30 Oct 2026
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self-hosted-sandboxes-reference changedmanaged-agents/self-hosted-sandboxes-reference

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3939| `ant beta:worker poll` | Claims work items from the environment’s queue and runs each session in process. With `--on-work`, calls your script for each work item instead. |
4040| `ant beta:worker run` | Handles one claimed session and exits. Use it as the entrypoint of a per-session sandbox. |
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42| Flag | Description |
43| ------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
44| `--environment-id` | The environment to poll for work. Also reads from `ANTHROPIC_ENVIRONMENT_ID`. |
45| `--environment-key` | Authenticates the worker with this environment. Also reads from `ANTHROPIC_ENVIRONMENT_KEY`. |
46| `--workdir` | Directory where skills are downloaded and tools read and write files. Defaults to `.` (the current directory). |
47| `--on-work` | Script to call for each claimed work item instead of running tools in-process. Receives session details as environment variables and the work item as JSON on standard input. |
48| `--max-idle` | How long to wait after the session goes idle with an `end_turn` [stop reason](https://platform.claude.com/docs/en/build-with-claude/handling-stop-reasons) before shutting down. Defaults to `60s`. |
49| `--log-format` | Log output format. Use `json` for structured log ingestion. Defaults to `text`. |
42| Flag | Description |
43| ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
44| `--environment-id` | The environment to poll for work. Also reads from `ANTHROPIC_ENVIRONMENT_ID`. |
45| `--environment-key` | Authenticates the worker with this environment. Also reads from `ANTHROPIC_ENVIRONMENT_KEY`. |
46| `--workdir` | Directory where skills are downloaded and tools read and write files. Defaults to `.` (the current directory). |
47| `--on-work` | Script to call for each claimed work item instead of running tools in-process. Receives session details as environment variables and the work item as JSON on standard input. |
48| `--max-idle` | How long the worker waits while a session is idle before `ant beta:worker run` exits or `ant beta:worker poll` moves on to the next work item. Idle time with a [`requires_action` stop reason](https://platform.claude.com/docs/en/managed-agents/events-and-streaming#respond-when-the-session-goes-idle) does not count. Defaults to `60s`. Set it to `0` to turn off the timeout. With an `--on-work` script, `ant beta:worker poll` ignores this flag. Pass it instead to the `ant beta:worker run` command that your script starts. |
49| `--log-format` | Log output format. Use `json` for structured log ingestion. Defaults to `text`. |
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5151## Environment variables
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