Follow Discord
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
One family

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

129 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_amber_ferry ◇ A new mode, off unless switched on remotely, lets remote sessions start preparing a message's attachments before its files finish downloadingv2.1.286 → v2.1.308 ◆in the build AND v2.1.292 tengu_amber_lark ◇ The usage report's analysis now calculates the most sessions running at the same time, adds per-day and per-week detail, and blanks some recommendationsv2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.305 tengu_amber_lynx ◇ The feedback dialog still skips one extra request when a server-side flag is on, the same as in the previous buildv2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.299 tengu_amber_packet ◇ Claude Code can reuse a precomputed conversation summary instead of compacting fresh, gated offv2.1.198 → v2.1.308 ◆in the build AND v2.1.265 tengu_amber_tollgate ◇ A new gate can block plugin install links, requiring /plugin install to be typed manually insteadv2.1.275 → v2.1.308 ◆in the build AND v2.1.275 tengu_basalt_scarp ◇ Default false. Takes effect only while tengu_basalt_spur is on, under the same provider conditions. When a forked request skips cache writes and its fork point is the same message as its main prompt-cache breakpoint, the breakpoint pinned at the fork point is placed one cacheable message earlier.v2.1.153 → v2.1.308 ◆in the build AND v2.1.248 tengu_basalt_spur ◇ Default false. Applies only when the provider is the first-party API, Anthropic on AWS or Google Cloud, or Foundry, and experimental betas are allowed (CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS unset, no HIPAA restriction). When on, the background memory-extraction (extract_memories) and auto-dream forks skip writing their new messages to the prompt cache, and request building can pin an extra cache breakpoint at the message a forked request branched from.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.248 tengu_binary_balloon ◇ Remote sessions can send tool descriptions straight from a recorded snapshot instead of rebuilding them, behind tengu_binary_balloonv2.1.281 → v2.1.308 ◆in the build AND v2.1.281 tengu_brass_kite ◇ A tool lets Claude offer one-time Claude in Chrome setup through a card after a Chrome tool finds the extension is not connectednever mined ·never mined AND v2.1.290 tengu_brass_plover ◇ Artifacts can show who else is viewing live, but only if you set an environment variable.v2.1.251 → v2.1.308 ◆in the build AND v2.1.251 tengu_breezy_fairy ◇ Session device-binding can now request an elevated security tier, retrying without it if the server rejects the requestv2.1.274 → v2.1.308 ◆in the build AND v2.1.277 tengu_ccr_bridge ◇ Bridge worker sessions record which account launched them, but the bridge is off.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.283 tengu_ccr_classifier_keepalive_enabled ◇ Claude Code adds a keepalive so remote classifier calls don't time out during long coordination checksv2.1.280 → v2.1.308 ◆in the build AND v2.1.280 tengu_ccr_subagent_lazy_hydrate ◇ Cloud sessions can defer loading subagent transcripts, but the flag is off unless the server enables it.v2.1.247 → v2.1.268 ○gone AND v2.1.247 tengu_ccr_subagent_skip_on_delta ◇ A switch can skip one hydration read to speed session resume, but it is off.v2.1.221 → v2.1.308 ◆in the build AND v2.1.221 tengu_ccr_v2_bridge_create_cli ◇ A new CCR v2 bridge CLI is gated behind a flag that currently defaults off.v2.1.261 → v2.1.308 ◆in the build AND v2.1.261 tengu_cedar_plume ◇ A startup tip pointing at a /design command for mocking up UI is present but nobody sees it.v2.1.169 → v2.1.308 ◆in the build AND v2.1.236 tengu_chair_sermon ◇ A message-history folding pass stays off by default but now tracks which attachment types get folded.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.281 tengu_chrome_auto_enable ◇ Automatic Chrome integration stays disabled; only its decision function changed shape.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.238 tengu_cobalt_harbor ◇ Whether remote control auto-started, and why, is now recorded.v2.1.181 → v2.1.308 ◆in the build AND v2.1.283 tengu_cobalt_plinth_damson ◇ The artifact tool's flat verbs are mapped to a canonical action shape, with a gate deciding which toolset is active.v2.1.257 → v2.1.308 ◆in the build AND v2.1.265 tengu_cobalt_plinth_fennel ◇ Bot-driven sessions no longer relay artifact requests; they go direct or not at all.v2.1.247 → v2.1.308 ◆in the build AND v2.1.267 tengu_cobalt_plinth_mallow ◇ Artifact comment and subscription operations can each be switched on separately from the server.v2.1.282 → v2.1.308 ◆in the build AND v2.1.282 tengu_cobalt_plinth_sainfoin ◇ Two new switches set by Anthropic's servers are built in, one falling back to off and one to onv2.1.290 → v2.1.308 ◆in the build AND v2.1.290 tengu_cobalt_plinth_samphire ◇ Multi-file artifact publish can copy published files between artifacts, tracked while still gated off.v2.1.260 → v2.1.308 ◆in the build AND v2.1.260 tengu_cobalt_plinth_willow ◇ Whether an artifact auto-opens in a local browser is now behind a new env var, off by default.v2.1.257 → v2.1.308 ◆in the build AND v2.1.257 tengu_cobalt_plinth_woad ◇ A new Artifacts 'quickstart' action can list design systems and route slide/document requests, feature-flaggedv2.1.271 → v2.1.292 ○gone AND v2.1.271 tengu_cobalt_plinth_yarrow ◇ Artifact syntax highlighting and mermaid diagrams are now always on; three other gates were renamed and stay off.v2.1.239 → v2.1.241 ○gone AND v2.1.239 tengu_cobalt_plinth_yew ◇ Cloud runs could attach an extra hosted connector, but the flag falls back to off.v2.1.239 → v2.1.308 ◆in the build AND v2.1.239 tengu_concurrent_moonbeam ◇ Behind a remote switch that falls back to off, turning off terminal titles can also skip automatic session titlingv2.1.284 → v2.1.308 ◆in the build AND v2.1.284 tengu_copper_thistle ◇ The status line always calls MCP background work a "task" instead of sometimes saying "job".v2.1.161 → v2.1.308 ◆in the build AND v2.1.292 tengu_dapper_dawn ◇ The shadow logging that measures idle sessions now records when Claude Code starts and stops waiting for your input, not only when work runsv2.1.251 → v2.1.308 ◆in the build AND v2.1.283 tengu_destructive_command_warning ◇ The destructive-command warning now reads the real command, but it stays off unless the feature flag is on.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.290 tengu_disable_live_host_context ◇ The safety classifier now sees notes from the hosting app, treating live ones as possible user consent.v2.1.236 → v2.1.308 ◆in the build AND v2.1.236 tengu_drifting_dream ◇ Oversized updatedPermissions answers from SDK programs are now refused or cut, and a waiting permission ask can resolve on its ownv2.1.295 → v2.1.308 ◆in the build AND v2.1.295 tengu_ember_latch ◇ A usage-limits surface for Pro and Max accounts is now hidden behind an off flag.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.248 tengu_expressive_whistle ◇ Claude can refetch startup config when the server says it is stale, but the gate is off.v2.1.246 → v2.1.308 ◆in the build AND v2.1.248 tengu_fallow_plover ◇ A new check can skip re-reading a file Claude has seen when its timestamp is newer, and the number actually re-read is recordedv2.1.288 → v2.1.308 ◆in the build AND v2.1.300 tengu_fancy_wand ◇ A /restart command, also /update, restarts Claude Code without losing the session and offers newer versions, behind a remote switchv2.1.288 → v2.1.308 ◆in the build AND v2.1.288 tengu_federated_flask ◇ /autofix-pr can now refuse a pull request that PR Steward is watching or working on, so two agents don't push to it at oncev2.1.284 → v2.1.308 ◆in the build AND v2.1.284 tengu_fleet_past_sessions ◇ Default false; CLAUDE_CODE_FLEET_PAST_SESSIONS set to true also turns it on. When on, the agent view loads past sessions and lists them as earlier entries, and claude --resume given no session ID, name, fork or other session option (such as --model, --permission-mode or --settings) opens the agent view. The --resume change does not apply while agent view is disabled by CLAUDE_CODE_DISABLE_AGENT_VIEW or the disableAgentView setting.v2.1.203 → v2.1.308 ◆in the build AND v2.1.203 tengu_gleaming_fair ◇ Resuming a session can now reuse an already-computed summary instead of recalculating itv2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.265 tengu_gleaming_fair_reuse ◇ Resuming a session can now reuse an already-computed summary instead of recalculating itv2.1.265 → v2.1.308 ◆in the build AND v2.1.265 tengu_glowing_lark ◇ Claude Code's rules for background tasks gained a launch-in-background-by-default value, next to a remote setting that is off by defaultv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_happy_ocean ◇ When you move a session to the cloud from a terminal in auto mode, Claude Code now asks the cloud session to stay in auto modev2.1.296 → v2.1.308 ◆in the build AND v2.1.296 tengu_harbor_kite_cloud ◇ CLAUDE_CODE_HARBOR_KITE_CLOUD turns on cloud peer access; otherwise a server flag decides and it's off.v2.1.232 → v2.1.308 ◆in the build AND v2.1.248 tengu_harbor_kite_pacing_off ◇ You can switch off Harbor request pacing with a new environment variable.v2.1.236 → v2.1.308 ◆in the build AND v2.1.248 tengu_haze_glass ◇ When only one org memory store is found, it is no longer picked for you automatically.v2.1.210 → v2.1.308 ◆in the build AND v2.1.281 tengu_hover_rest ◇ The new storage layer now touches nearly every part of the product but is never actually created.v2.1.221 → v2.1.308 ◆in the build AND v2.1.304 tengu_iridescent_crystal ◇ Auto-mode's safety classifier gained a new 'arbiter' mode that can skip some server checksv2.1.269 → v2.1.308 ◆in the build AND v2.1.281 tengu_iterative_lightning ◇ When a session is resumed, Claude can now be warned about tool calls that were lost, but only when this is switched on remotelyv2.1.299 → v2.1.308 ◆in the build AND v2.1.302 tengu_jade_anvil_4 ◇ The usage-limit dialog now takes the reset time for its auto-continue option from a snapshot made when the dialog opensv2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.296 tengu_jaunty_umbrella ◇ A new check covers one specific tool in a permission mode named arbiter and stays off unless the server turns it onv2.1.300 → v2.1.308 ◆in the build AND v2.1.300 tengu_juniper_relay ◇ Saved feedback drafts can be reviewed and sent over the SDK, but the surface is off by default.v2.1.212 → v2.1.308 ◆in the build AND v2.1.251 tengu_lantern_spool ◇ A server flag can widen when subagent requests send the extended usage-limit header.v2.1.176 → v2.1.308 ◆in the build AND v2.1.292 tengu_larch_pavise ◇ A per-session workshop document gets snapshotted with your session files and is only writable in plan mode.v2.1.219 → v2.1.267 ○gone AND v2.1.219 tengu_lucky_brooks ◇ When switched on remotely, a first message over 2000 characters is cut to its first 1500 before Claude Code generates a session title from itv2.1.282 → v2.1.308 ◆in the build AND v2.1.282 tengu_lucky_garden ◇ A reworked way of capturing your shell's functions, aliases and options for Bash commands is in the code, off unless switched on remotelyv2.1.287 → v2.1.289 ○gone AND v2.1.287 tengu_magical_pixel ◇ New tip promotes Claude Code Desktop's per-session iOS Simulator pane for iOS app workv2.1.265 → v2.1.308 ◆in the build AND v2.1.281 tengu_managed_config_prefetch_off ◇ Claude Code now fetches organization-managed settings early at startup by default when it connects to Anthropic directly, unless switched off remotelyv2.1.293 → v2.1.308 ◆in the build AND v2.1.293 tengu_maple_sundial ◇ Default false. Turns on the reworked /config panel: some setting labels change (for example Verbose in place of Verbose output), rows such as Notifications and Agents view are added, and the setting list is regrouped. In interactive sessions /vim and /output-style become hidden commands that say they moved to /config, and the standalone /output-style command is disabled.v2.1.163 → v2.1.308 ◆in the build AND v2.1.163 tengu_mellow_heron ◇ Claude Code can now track prompts that were merged or queued together, for rewinding and spotting unanswered turns, when a switch is onv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_memoized_owl ◇ The fixed browser setup reply in the desktop app and on claude.ai is now controlled by a newly named switch, so any earlier rollout starts overv2.1.301 → v2.1.308 ◆in the build AND v2.1.301 tengu_merry_tide ◇ One tool can now be offered when an extra condition holds and a remote switch is on, and the shared tool description needs that same conditionv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_mill_orange ◇ Chinese, Japanese and Korean messages without spaces could trigger memory recall, but that branch is off here.v2.1.219 → v2.1.308 ◆in the build AND v2.1.221 tengu_mint_lanes ◇ Default false. Turns on kind lanes in the slash command menu, as does CLAUDE_CODE_ENABLE_MENU_KIND_LANES: each command row gets a kind label (info commands show as config, action shows nothing) and a [source] tag, and uses the command's menuDescription when it has one.v2.1.163 → v2.1.308 ◆in the build AND v2.1.163 tengu_misty_anchor ◇ Cloud sessions can fetch a server-built memory block into the system prompt, off in this build.v2.1.246 → v2.1.308 ◆in the build AND v2.1.271 tengu_moss_anchor ◇ The built-in fallback for starting sessions in auto mode switched from off to on, so it applies unless the server turns it offv2.1.152 → v2.1.308 ◆in the build AND v2.1.302 tengu_mossy_wirth ◇ Reading project files can return an uploaded PDF or Word file itself, and writes can check a version first; both are off unless switched on remotelyv2.1.299 → v2.1.308 ◆in the build AND v2.1.299 tengu_moth_copse ◇ Default false. When true, Claude Code takes the memory stores code paths that a non-empty CLAUDE_MEMORY_STORES environment variable turns on; for example, AutoMem memory entries are filtered out of the loaded memory files. One check differs: only the environment variable, not this flag, makes files the memory mode when no earlier choice applies.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.217 tengu_ochre_bittern ◇ A helper that always returned false now checks a remote gate first.v2.1.260 → v2.1.308 ◆in the build AND v2.1.260 tengu_ochre_dunlin ◇ When staged files fail to land, Claude Code logs a warning and can tell the model the files may be missing or out of datev2.1.295 → v2.1.308 ◆in the build AND v2.1.300 tengu_ochre_plover ◇ Claude can auto-draft replies to artifact comments, but it's off by default and declines by default.v2.1.260 → v2.1.308 ◆in the build AND v2.1.260 tengu_ochre_wren ◇ An alternate opening line for Claude's system prompt can be switched on with an environment variable.v2.1.239 → v2.1.294 ○gone AND v2.1.248 tengu_passport_quail ◇ Memory extraction can now turn itself on when post-turn-memory config is present, bypassing its usual feature gatev2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.305 tengu_plugin_binary_assets ◇ Default false. When true, or when the CLAUDE_CODE_PLUGIN_BINARY_ASSETS env var is 1, true, yes or on, Claude Code provisions the native binaries a plugin declares under binaries in its .claude-plugin/plugin.json into the plugin's bin directory, keyed to their declared sha256 values. Provisioning also requires the plugin's marketplace to pass a separate check, and a plugin root that is not a real directory is refused.v2.1.196 → v2.1.308 ◆in the build AND v2.1.196 tengu_quiet_ember ◇ Responsive mode is no longer offered when Claude Code runs inside Slack or Teamsnever mined ·never mined AND v2.1.281 tengu_quiet_hopcroft ◇ When a hook cannot check a call, Claude Code now blocks the call instead of letting it throughnever mined ·never mined AND v2.1.288 tengu_radiant_hare ◇ A new remote switch can stop accepted edits from skipping the auto mode safety check; it is off by defaultv2.1.305 → v2.1.308 ◆in the build AND v2.1.305 tengu_radiant_heron ◇ A Remote Control background process can now tell cloud sessions they may use your local folder and its tools, if a server switch and several checks allow itv2.1.283 → v2.1.308 ◆in the build AND v2.1.283 tengu_read_dedup_killswitch ◇ The Read tool accepts allow_large, letting Claude read an oversized text file in one go when there is still room in the conversationv2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.296 tengu_remote_auto_mode_include_destructive_mcp ◇ Destructive MCP tools could stop skipping permission prompts in remote auto mode, but that is off.v2.1.222 → v2.1.308 ◆in the build AND v2.1.259 tengu_russet_plover ◇ Artifact syntax highlighting and mermaid diagrams are now always on; three other gates were renamed and stay off.v2.1.239 → v2.1.250 ○gone AND v2.1.240 tengu_rustling_orbit ◇ A missing policy-limits response with no cache no longer counts as a failure; the session runs with no restrictions instead.v2.1.259 → v2.1.308 ◆in the build AND v2.1.304 tengu_salt_marsh ◇ Memory citations can now be tagged inline with markupv2.1.205 → v2.1.308 ◆in the build AND v2.1.275 tengu_satchel_banjo ◇ The dialog for buying extra usage now reads an offer, a remaining monthly bundle cap and custom discount tiers sent from the serverv2.1.217 → v2.1.308 ◆in the build AND v2.1.304 tengu_scratch ◇ Claude may soon be told to use a per-session scratchpad directory for temp files instead of /tmp.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.252 tengu_sepia_moth ◇ A precompute-compaction toggle is gated off by default and has no effect even if saved.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.300 tengu_sharded_snowflake ◇ claude plugin eval is now generally available, with a server-side switch that can turn it off per sessionv2.1.269 → v2.1.308 ◆in the build AND v2.1.269 tengu_shimmying_stardust ◇ Background-hint timing for sync subagents now uses its own separate, oddly-named gatev2.1.273 → v2.1.308 ◆in the build AND v2.1.281 tengu_shining_fractals ◇ A queued-state enum gains a member for queued MCP elicitation requests.v2.1.145 → v2.1.308 ◆in the build AND v2.1.284 tengu_silent_harbor ◇ Claude Code labels and groups each part of its system prompt, and a new detached mode skips a setup step; the prompt text is the samev2.1.176 → v2.1.308 ◆in the build AND v2.1.301 tengu_silk_almanac ◇ No description from anybody.v2.1.187 → v2.1.204 ○gone AND v2.1.187 tengu_silk_hinge ◇ The message-timestamps toggle in settings is still gated and not generally shown.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.288 tengu_skills_dashboard_enabled ◇ The skills dashboard drops entries with unrecognised health values, but the dashboard itself stays off.v2.1.140 → v2.1.308 ◆in the build AND v2.1.223 tengu_slate_thimble ◇ Memory extraction can now turn itself on when post-turn-memory config is present, bypassing its usual feature gatev2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.269 tengu_snappy_pelican ◇ Claude can now ask a subagent for lower or higher effort than its own, but the option is off unless switched onv2.1.296 → v2.1.308 ◆in the build AND v2.1.296 tengu_sorrel_trellis_tenon ◇ Auto-replies to artifacts can now be delivered through an alternate, forked/subagent pathv2.1.269 → v2.1.308 ◆in the build AND v2.1.271 tengu_starry_locket ◇ Two server switches, off unless turned on remotely, can hide or skip MCP servers from claude.ai-synced plugins that a terminal cannot sign in tov2.1.283 → v2.1.308 ◆in the build AND v2.1.283 tengu_structured_output_strict ◇ Tool descriptions can differ by session proactive level; the streaming behaviour behind it is off.v2.1.203 → v2.1.308 ◆in the build AND v2.1.301
Feedback