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HomeDocsClaude Code CLI 15 Sep 2026
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Self-hosted environments changedself-hosted-environments

Nearest release: v2.1.273, published 4 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 15 Sep 2026 22:32 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 28 Sep 2026 23:37 UTC.

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6262These terms appear throughout the self-hosted pages:
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64| Term | What it is |
65| :----------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
66| Environment | A named group of your runners, created in claude.ai settings. Sessions are routed to an environment, not to an individual runner. |
67| Environment secret | The single shared credential runners use to authenticate and register with the environment. Shown once at environment creation, labeled **environment key** in the admin UI. |
68| Runner | The long-lived process you deploy. A runner registers with the environment, receives a runner token, and polls for sessions. |
69| Session | One Claude Code task, started from claude.ai, the mobile app, or another Anthropic surface such as a scheduled routine or an agent. Each session runs as a child Claude Code process the runner spawns. |
64| Term | What it is |
65| :- | :- |
66| Environment | A named group of your runners, created in claude.ai settings. Sessions are routed to an environment, not to an individual runner. |
67| Environment secret | The single shared credential runners use to authenticate and register with the environment. Shown once at environment creation, labeled **environment key** in the admin UI. |
68| Runner | The long-lived process you deploy. A runner registers with the environment, receives a runner token, and polls for sessions. |
69| Session | One Claude Code task, started from claude.ai, the mobile app, or another Anthropic surface such as a scheduled routine or an agent. Each session runs as a child Claude Code process the runner spawns. |
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7171In API fields, token claims, and metric names, the environment appears as `pool`, and the environment ID is the `pool_id`. The [reference](/docs/en/self-hosted-environments-reference) maps the two spellings, including the deprecated `pool` flag names.
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