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.
State
This account
Anonymous
Compiled default
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
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