{"name":"CLAUDE_CLIENT_PRESENCE_FILE","slug":"claude-client-presence-file","family":"env","title":"Environment variables","noun":"environment variable","description":"Path to a file that an external tool, such as a screen-lock listener, creates when you unlock your screen and deletes when you lock it. While the file exists, Claude Code skips [Remote Control mobile push notifications](\/docs\/en\/remote-control#mobile-push-notifications), so you stop getting pushes while you are actively using the computer. When the file is absent or unreadable, notifications are sent as normal. Claude Code checks the file once per push-triggering event rather than polling it. Requires Claude Code v2.1.181 or later","description_source":"docs","described_by":{"doc":"claude-code\/env-vars","title":"Environment variables"},"presence":{"first_seen":"2.1.181","removed_in":null,"in_current_build":true,"newest_mined":"2.1.309","builds":112,"mined_builds":150,"first_cited":null},"aliases":[],"entries":[],"entries_total":0,"docs":[{"source":"claude-code","path":"env-vars","title":"Environment variables","documented":true},{"source":"claude-code","path":"remote-control","title":"Continue local sessions from any device with Remote Control","documented":false},{"source":"claude-code","path":"whats-new\/2026-w25","title":"Week 25 \u00b7 June 15\u201319, 2026","documented":false}],"docs_total":3,"gates":[],"related":[{"name":"CLAUDE_AFK_COUNTDOWN_MS","slug":"claude-afk-countdown-ms","description":"How many milliseconds before auto-continue the on-screen countdown appears on an unanswered [`AskUserQuestion`](\/docs\/en\/tools-reference) dialog. Default `20000` (20 seconds), capped at the auto-continue timeout. Has no effect unless auto-continue is on; see the [`askUserQuestionTimeout`](\/docs\/en\/settings-reference#askuserquestiontimeout) setting and `CLAUDE_AFK_TIMEOUT_MS`. Requires Claude Code v2.1.198 or later"},{"name":"CLAUDE_AFK_TIMEOUT_MS","slug":"claude-afk-timeout-ms","description":"How many milliseconds of idle time before an unanswered [`AskUserQuestion`](\/docs\/en\/tools-reference) dialog auto-continues without you. Auto-continue is off by default; opt in with the [`askUserQuestionTimeout`](\/docs\/en\/settings-reference#askuserquestiontimeout) setting. This variable is an override for demos and automated tests: when set, it takes precedence over that setting and turns auto-continue on even when the setting is unset or `never`. Setting `0` doesn't turn the timeout off; it closes the dialog immediately. In v2.1.198 and v2.1.199, auto-continue was on by default with a `60000` (60 seconds) timeout. Requires Claude Code v2.1.198 or later"},{"name":"CLAUDE_AFTER_LAST_COMPACT","slug":"claude-after-last-compact","description":"When `1`, `true`, `yes` or `on`, every request that fetches a session's log entries from the session ingress API adds the query parameter `after_last_compact=true`, asking the server for the entries after the last compaction. Unset, the parameter is not sent."},{"name":"CLAUDE_AGENT_SDK_CLIENT_APP","slug":"claude-agent-sdk-client-app","description":"Names the application built on the Agent SDK. When set, it is sent on Anthropic API requests as the `x-client-app` header and appended as `client-app\/<value>` to Claude Code's `User-Agent` strings (`claude-cli\/...` and `claude-code\/...`). If the value is rejected as a header value, the error names this variable as its source."},{"name":"CLAUDE_AGENT_SDK_DISABLE_BUILTIN_AGENTS","slug":"claude-agent-sdk-disable-builtin-agents","description":"Set to `1` to disable all built-in [subagent](\/docs\/en\/sub-agents) types such as Explore and Plan. Only applies in non-interactive mode (the `-p` flag). Useful for SDK users who want a blank slate. This also removes `general-purpose`, the subagent Claude Code runs when an Agent tool call omits `subagent_type`. Such a call then fails with [`subagent_type is required`](\/docs\/en\/errors#subagent-type-is-required)"},{"name":"CLAUDE_AGENT_SDK_DISABLE_MCP_MANIFESTS","slug":"claude-agent-sdk-disable-mcp-manifests","description":"The Agent SDK can now read tool lists from in-process MCP servers itself and pass them to the CLI when it starts"},{"name":"CLAUDE_AGENT_SDK_MCP_NO_PREFIX","slug":"claude-agent-sdk-mcp-no-prefix","description":"Set to `1` to skip the `mcp__<server>__` prefix on tool names from SDK-created MCP servers. Tools use their original names. SDK usage only"},{"name":"CLAUDE_AGENT_SDK_VERSION","slug":"claude-agent-sdk-version","description":"Your entrypoint and SDK version are checked against known values before being reported."},{"name":"CLAUDE_AGENTS_SELECT","slug":"claude-agents-select","description":"`claude agents` resolves its directory filter through storage rather than the raw path."},{"name":"CLAUDE_AI_ORIGIN","slug":"claude-ai-origin","description":"The remote trigger tool can create webhook triggers so routines fire on outside events."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/claude-client-presence-file","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}