{"name":"CLAUDE_CODE_IS_COWORK","slug":"claude-code-is-cowork","family":"env","title":"Environment variables","noun":"environment variable","description":"Account-synced skills no longer have file attachments pulled out, except on remote or Cowork runs.","description_source":"entry","described_by":{"version":"2.1.228","anchor":"synced-skills-no-longer-have-file-attachments-extracted-exce"},"presence":{"first_seen":"2.1.138","removed_in":null,"in_current_build":true,"newest_mined":"2.1.309","builds":150,"mined_builds":150,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.274","anchor":"new-claude-code-host-session-id-passthrough-env-var","heading":"New CLAUDE_CODE_HOST_SESSION_ID passthrough env var","line":"Claude Code now recognizes a CLAUDE_CODE_HOST_SESSION_ID environment variable","released_at":"2026-09-16 22:36:09","reason":"found in this entry's text"},{"version":"2.1.261","anchor":"claude-in-chrome-file-uploads-bypass-local-preparation-under","heading":"Claude-in-Chrome file uploads bypass local preparation under Cowork","line":"Chrome file uploads can now skip local prep under a Cowork-specific condition.","released_at":"2026-09-04 17:49:34","reason":"found in this entry's text, named in this entry"},{"version":"2.1.257","anchor":"new-preserved-environment-variable-claude-code-ccr-surface","heading":"New preserved environment variable CLAUDE_CODE_CCR_SURFACE","line":"CLAUDE_CODE_CCR_SURFACE is now preserved and passed through like the existing entrypoint variables.","released_at":"2026-09-01 17:15:33","reason":"found in this entry's text"},{"version":"2.1.251","anchor":"cache-invalidation-bookkeeping-now-limited-to-cowork-and-des","heading":"Cache invalidation bookkeeping now limited to Cowork and desktop","line":"Two cache bookkeeping steps no longer run in the terminal CLI at all.","released_at":"2026-08-28 15:34:26","reason":"named in this entry, found in this entry's text"},{"version":"2.1.228","anchor":"synced-skills-no-longer-have-file-attachments-extracted-exce","heading":"Synced skills no longer have file attachments extracted, except when remote","line":"Account-synced skills no longer have file attachments pulled out, except on remote or Cowork runs.","released_at":"2026-08-11 17:45:45","reason":"found in this entry's text"},{"version":"2.1.207","anchor":"morning-brief-skill-morning","heading":"Morning Brief Skill ( \/morning )","line":null,"released_at":"2026-07-10 22:25:09","reason":"found in this entry's text"},{"version":"2.1.207","anchor":"morning-brief-for-non-cowork-sessions-in-development","heading":"Morning Brief for Non-Cowork Sessions [In Development]","line":null,"released_at":"2026-07-10 22:25:09","reason":"found in this entry's text"}],"entries_total":7,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"CLAUDE_CODE_3P_PROBE_WROTE_HAIKU_DEFAULT","slug":"claude-code-3p-probe-wrote-haiku-default","description":"If your cloud account cannot use a model, Claude Code can step down to the next one; `CLAUDE_CODE_DISABLE_MODEL_ACCESS_FALLBACK` turns this off"},{"name":"CLAUDE_CODE_3P_PROBE_WROTE_OPUS_DEFAULT","slug":"claude-code-3p-probe-wrote-opus-default","description":"Internal marker on third-party providers. When Claude Code itself writes `ANTHROPIC_DEFAULT_OPUS_MODEL` into its environment (the model availability probe on Bedrock, Vertex or Mantle, or a move down the model fallback ladder), it sets this variable to the same model ID. An `ANTHROPIC_DEFAULT_OPUS_MODEL` equal to it is treated as Claude Code's own choice rather than a user pin: it does not count as pinned, the probe does not skip it, and the fallback ladder may move it."},{"name":"CLAUDE_CODE_3P_PROBE_WROTE_SONNET_DEFAULT","slug":"claude-code-3p-probe-wrote-sonnet-default","description":"On third-party providers, Haiku model names are no longer skipped by the check that sets up the Sonnet default model"},{"name":"CLAUDE_CODE_3P_SEEDED_OPUS_DEFAULT","slug":"claude-code-3p-seeded-opus-default","description":"If your cloud account cannot use a model, Claude Code can step down to the next one; `CLAUDE_CODE_DISABLE_MODEL_ACCESS_FALLBACK` turns this off"},{"name":"CLAUDE_CODE_3P_SEEDED_SONNET_DEFAULT","slug":"claude-code-3p-seeded-sonnet-default","description":"If your cloud account cannot use a model, Claude Code can step down to the next one; `CLAUDE_CODE_DISABLE_MODEL_ACCESS_FALLBACK` turns this off"},{"name":"CLAUDE_CODE_ACCESSIBILITY","slug":"claude-code-accessibility","description":"Set to `1` to keep the native terminal cursor visible and disable the inverted-text cursor indicator. Allows screen magnifiers like macOS Zoom to track cursor position"},{"name":"CLAUDE_CODE_ACCOUNT_TAGGED_ID","slug":"claude-code-account-tagged-id","description":"Overrides the `user.account_id` attribute Claude Code attaches to its OpenTelemetry data. It applies only when an account UUID is known and `OTEL_METRICS_INCLUDE_ACCOUNT_UUID` is not turned off (default on); when unset or empty, `user.account_id` is derived from the account UUID as a tagged ID of the form `user_01...`."},{"name":"CLAUDE_CODE_ACCOUNT_UUID","slug":"claude-code-account-uuid","description":"The device bridge is skipped entirely when the host's account UUID doesn't match the stored one."},{"name":"CLAUDE_CODE_ACT_DONT_REDERIVE","slug":"claude-code-act-dont-rederive","description":"Three existing feature gates moved position; their defaults are unchanged."},{"name":"CLAUDE_CODE_ACTION","slug":"claude-code-action","description":"Marks a run as coming from the Claude Code GitHub Action. A truthy value (`1`, `true`, `yes` or `on`) makes Claude Code set `CLAUDE_CODE_ENTRYPOINT` to `claude-code-github-action`, but only when `CLAUDE_CODE_ENTRYPOINT` is not already set and the command is not `claude mcp serve`. It is also reported as `isClaudeCodeAction` in the environment details attached to telemetry."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/claude-code-is-cowork","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}