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2 pages for claude_afk_timeout_ms.
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Environment variables
Claude Code CLI · in the page
env-vars
…ut`](/docs/en/settings-reference#askuserquestiontimeout) setting and `CLAUDE_AFK_TIMEOUT_MS`. Requires Claude Code v2.1.198 or later…
Claude Code settings reference
Claude Code CLI · in the page
settings-reference
…or `"never"` * **Default**: `"never"` * **Per-session overrides**: [`CLAUDE_AFK_TIMEOUT_MS`](/docs/en/env-vars) takes precedence over this key for one session ```json settings.json theme={null} {…