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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Feature flags, all 2,081.

GrowthBook gates the client evaluates on startup. Most of what ships is behind one of these before it is announced.

Feature flags2,081seen across 149 builds
In v2.1.308889the newest inventory on disk
Gone314in an earlier build, not in the newest
Described0have a line in Anthropic's documentation
No docs line2,081no line in the documentation we hold

Every feature flag, and where it lived

256 of 2,081 feature flags One tick per build on this box, oldest on the left. A gap is a build the feature flag was not in.

A is the one account this site reads, N the anonymous baseline, D what the release compiled in. 1,143 of 2,081 gates have been read at all: a run only records the gates its own release wrote about. Claude Code evaluates its gates on Anthropic's servers, so a reading of off can be a rollout this account sits outside of, and none of it says anything about your install. How to read these.

○ not in v2.1.308, ◇ we found no documentation describing it.

Feature flagWhat it doesSpan v2.1.138 → v2.1.308 Status Reading
tengu_slate_wicket ◇ Claude Code can now refuse names with hidden or direction-changing characters, < or >, or more than 256 charactersv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_sleepy_ripple ◇ A server-controlled switch, on unless turned off remotely, now decides whether a step runs just before Claude Code compacts a conversationv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_smooth_chipmunk ◇ Auto mode's dangerous-action classifier now runs server-side and blocks actions it flags or can't reach.v2.1.261 → v2.1.308 ◆in the build AND v2.1.282 tengu_snoopy_creek ◇ Claude Code now sends usage data about each permission decision, recording what kind of rule or check made itv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_squishy_spring ◇ Worktree file copying can now try a fast atomic rename before falling back to the old method, behind a gatev2.1.275 → v2.1.308 ◆in the build AND v2.1.275 tengu_staged_ladybug ◇ Claude Code now counts turns since a person last wrote and can act once a limit is reached, but this is off unless switched on remotelyv2.1.296 → v2.1.308 ◆in the build AND v2.1.300 tengu_starry_squid ◇ Programs built on the SDK can now receive tool calls and results from subagents nested inside other subagentsv2.1.290 → v2.1.308 ◆in the build AND v2.1.290 tengu_static_title_under_mux ◇ Inside tmux, screen or zellij your terminal title stays static instead of animating.v2.1.236 → v2.1.308 ◆in the build AND v2.1.236 tengu_steady_panda ◇ When a session is set up, Claude Code's first reply now waits, up to a limit, for the session's start-up work to finishv2.1.287 → v2.1.308 ◆in the build AND v2.1.287 tengu_steady_plover ◇ When you resume a session whose last reply was recently cut off, Claude Code now treats it as an interrupted turn and can nudge to continuev2.1.299 → v2.1.308 ◆in the build AND v2.1.301 tengu_still_heron ◇ If the same usage-limit refusal repeats with the same limits, Claude Code marks it as a repeat, skips the model request and holds the result for later deliveryv2.1.292 → v2.1.308 ◆in the build AND v2.1.292 tengu_stream_watchdog_default_on ◇ Stalled streams are now detected across direct, gateway and Bedrock connections, and you can force it with an env var.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.248 tengu_streamed_thimble ◇ A session waiting at the login notice now clears itself when you log in from another Claude Code windowv2.1.281 → v2.1.308 ◆in the build AND v2.1.281 tengu_swirling_meteor ◇ New gate 'tengu_swirling_meteor' controls grouping of background task notificationsv2.1.274 → v2.1.308 ◆in the build AND v2.1.299 tengu_synchronous_bunny ◇ Claude Code no longer checks for the GitHub app when it is connected through a provider other than Anthropic's own servicev2.1.286 → v2.1.306 ○gone AND v2.1.285 tengu_teal_corbel_finial ◇ Anchored artifact comments now carry a snippet of the surrounding page for context.v2.1.251 → v2.1.308 ◆in the build AND v2.1.251 tengu_teleport_github_access_precheck ◇ Teleporting a session to the cloud now checks GitHub access ahead of time and can fail earlierv2.1.268 → v2.1.308 ◆in the build AND v2.1.300 tengu_tidy_abacus ◇ /usage can now point out what is costing you most and suggest fixes such as /compact or lower effort, which you can queue as a follow-upv2.1.305 → v2.1.308 ◆in the build AND v2.1.305 tengu_tidy_cloud ◇ When a response stops arriving because it was suspended, Claude Code now retries it a limited number of times before its usual retry handlingv2.1.290 → v2.1.308 ◆in the build AND v2.1.290 tengu_tidy_eclipse ◇ When a tool request contains details the tool does not recognise, Claude Code can now drop them and try againv2.1.290 → v2.1.308 ◆in the build AND v2.1.290 tengu_tidy_fern ◇ New gate tengu_tidy_fern can add an extra value into how user messages are builtv2.1.274 → v2.1.308 ◆in the build AND v2.1.274 tengu_tidy_sloth ◇ Claude is now told that a background task's result reaches it only if the task finishes before Claude gives its final responsev2.1.292 → v2.1.308 ◆in the build AND v2.1.292 tengu_tidy_widget ◇ A new tengu_tidy_widget gate helps decide whether a listing's preconditions are adopted when publishing an artifactv2.1.281 → v2.1.308 ◆in the build AND v2.1.281 tengu_tingly_pearl ◇ axScreenReader is now read only from trusted settings, and Claude Code explains when a project's request to enable it was ignoredv2.1.305 → v2.1.308 ◆in the build AND v2.1.305 tengu_tool_detach ◇ A long-running tool call can now be moved to the background instead of blocking when a new message comes inv2.1.277 → v2.1.308 ◆in the build AND v2.1.287 tengu_tranquil_cloud ◇ Claude Code now strips invisible characters like zero-width marks from pasted or typed text before sending itv2.1.277 → v2.1.308 ◆in the build AND v2.1.300 tengu_tranquil_fern ◇ Resuming a session that was in plan mode now puts you back in plan mode.v2.1.239 → v2.1.299 ○gone AND v2.1.275 tengu_tranquil_summit ◇ Auto mode now stops itself instead of looping forever when safety checks keep failingv2.1.280 → v2.1.304 ○gone AND v2.1.280 tengu_truncated_response_recovery ◇ A cut-off streaming reply in claude -p is now retried automatically, asking the model to resume.v2.1.246 → v2.1.308 ◆in the build AND v2.1.246 tengu_turtle_carbon ◇ Your own prompts now render as markdown in the transcript, so lists and code blocks show up formatted.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.234 tengu_typed_koala ◇ Team memory sync now holds onto local-only files instead of dropping them when its sync record is brokenv2.1.275 → v2.1.308 ◆in the build AND v2.1.277 tengu_ultrareview_post_enabled ◇ Ultra review adds --post and --no-post, so findings go to the PR as a comment from you.v2.1.227 → v2.1.308 ◆in the build AND v2.1.269 tengu_umber_plover ◇ Claude Code's safety check for Bash commands that begin by setting environment variables now depends on extra conditions, including a remote switchv2.1.292 → v2.1.308 ◆in the build AND v2.1.307 tengu_unified_waterfall ◇ Remote tool-approval waiting can now be overridden with a CLAUDE_CODE_REMOTE_TOOLS_ASK_SEATS env varv2.1.280 → v2.1.308 ◆in the build AND v2.1.280 tengu_valiant_sphinx ◇ A wakeup cancellation message, plugin notifications, a model-change reason, a WebP image limit and a new remote switchv2.1.295 → v2.1.308 ◆in the build AND v2.1.295 tengu_vast_journal ◇ When you resume, a turn that ended right after a tool result with Claude choosing to stop is now treated as complete instead of interruptedv2.1.305 → v2.1.308 ◆in the build AND v2.1.305 tengu_velvet_cairn ◇ In some hosted sessions, WebFetch now returns an "Already fetched" note instead of fetching the same page with the same prompt againv2.1.282 → v2.1.308 ◆in the build AND v2.1.285 tengu_velvet_heron ◇ A new dialog warns some users that auto mode is still billing them for classifier requestsv2.1.278 → v2.1.308 ◆in the build AND v2.1.278 tengu_velvet_panda ◇ Behind tengu_velvet_panda, the send-now key can push queued messages into a running turn without stopping itv2.1.281 → v2.1.308 ◆in the build AND v2.1.281 tengu_velvety_aurora ◇ For sessions that talk to people in a chat thread, waiting on a named person now counts as waiting on the userv2.1.295 → v2.1.308 ◆in the build AND v2.1.295 tengu_violin_bassbar ◇ CLAUDE_CODE_REMOTE_TOOLS_SPECULATIVE_CLASSIFIER is now read, but the code around it always gives the same answer, so setting it changes nothingv2.1.282 → v2.1.308 ◆in the build AND v2.1.282 tengu_violin_frog ◇ Claude Code now reads a new remotely controlled switch, and what it controls is not yet knownv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_violin_lining ◇ Tool calls forwarded from a cloud session are blocked from reading or changing your machine's keychains and credential filesv2.1.295 → v2.1.308 ◆in the build AND v2.1.283 tengu_violin_tailpiece ◇ A new tengu_violin_tailpiece flag name appears next to the remote-tools flags but nothing seems to use it yetv2.1.282 → v2.1.308 ◆in the build AND v2.1.307 tengu_vscode_inline_pastes ◇ VS Code extension adds default-on settings for inline pastes and 'tranquil cloud', plus a new max-effort reminder optionv2.1.280 → v2.1.308 ◆in the build AND v2.1.296 tengu_vscode_math_rendering ◇ Claude Code now passes two new remotely controlled switches to the VS Code extension, one for math rendering and one for a restore breakerv2.1.301 → v2.1.308 ◆in the build AND v2.1.301 tengu_vscode_python_beside_start ◇ The VS Code extension has two new remotely controlled settings, about stored startup configuration and Python, that are on by defaultv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_vscode_restore_breaker ◇ Claude Code now passes two new remotely controlled switches to the VS Code extension, one for math rendering and one for a restore breakerv2.1.301 → v2.1.308 ◆in the build AND v2.1.301 tengu_vscode_resume_precheck ◇ A resume-precheck gate is now passed to the VS Code extension, on by default.v2.1.248 → v2.1.308 ◆in the build AND v2.1.284 tengu_vscode_stored_startup_config ◇ The VS Code extension has two new remotely controlled settings, about stored startup configuration and Python, that are on by defaultv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_witty_hearth ◇ With CLAUDE_CODE_PEWTER_OWL_TOOL set, three tools can now leave out a response ID depending on a remotely controlled switchv2.1.290 → v2.1.308 ◆in the build AND v2.1.293 tengu_wobbly_pinwheel ◇ Scripted sessions now get a stream-json status message whenever the permission mode changes.v2.1.234 → v2.1.308 ◆in the build AND v2.1.234 tengu_woolly_forest ◇ The check for preparing compaction ahead of time was reorganized, and a separate server-controlled switch was added beside itv2.1.300 → v2.1.308 ◆in the build AND v2.1.300 tengu_workflow_schema_lint_enforce ◇ The workflow check for agent output formats that can never be met behaves the same as in the previous buildv2.1.260 → v2.1.308 ◆in the build AND v2.1.305 tengu_workflows_enabled ◇ One helper now decides whether workflows are off, covering the setting, env var and remote gate.v2.1.146 → v2.1.308 ◆in the build AND v2.1.284 tengu_zany_melody ◇ A server-controlled switch tied to session check-ins now has a different name; its built-in value is still onv2.1.300 → v2.1.308 ◆in the build AND v2.1.300
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