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HomeDocsClaude Code CLI 25 Sep 2026
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Hosting the Agent SDK changedagent-sdk/hosting

Nearest release: v2.1.283, published 2 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 25 Sep 2026 21:30 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 25 Sep 2026 21:37 UTC.

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114114Example workloads include an email agent that triages and responds to incoming mail, a site builder that hosts a per-user editable site through container ports, and a chat bot that handles continuous traffic from a platform like Slack.
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116The container exposes an HTTP or WebSocket endpoint and maps each active session to a long-lived query and the subprocess behind it. In TypeScript, use [`streamInput()`](/docs/en/agent-sdk/typescript#query-object) to add turns to an active session and [`startup()`](/docs/en/agent-sdk/typescript#startup) to pre-warm subprocesses ahead of incoming traffic. In Python, use [`ClaudeSDKClient`](/docs/en/agent-sdk/python#claudesdkclient) to hold a session open across turns. Size the container so it can hold the maximum number of concurrent sessions in memory.
116The container exposes an HTTP or WebSocket endpoint and maps each active session to a long-lived query and the subprocess behind it. The calls that keep sessions open and warm differ between the SDKs:
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118* **TypeScript**: use [`streamInput()`](/docs/en/agent-sdk/typescript#query-object) to add turns to an active session. Call [`startup()`](/docs/en/agent-sdk/typescript#startup) to pre-warm subprocesses ahead of incoming traffic. If you don't know a session's working directory until its first request arrives, pre-warm with [`prewarm()`](/docs/en/agent-sdk/typescript#prewarm) instead.
119* **Python**: use [`ClaudeSDKClient`](/docs/en/agent-sdk/python#claudesdkclient) to hold a session open across turns.
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121Size the container so it can hold the maximum number of concurrent sessions in memory.
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118123### Hybrid sessions
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