Feature flags, all 2,081.

tengu_account_plugins_sync_enabled ◇ Plugins you enabled on claude.ai can be pulled to your machine, but only your account server can enable it.never mined ·never mined AND v2.1.308 tengu_agent_list_attach ◇ Default false. When CLAUDE_CODE_AGENT_LIST_IN_MESSAGES is unset or not a recognised boolean, true sends the Agent tool's list of agent types as agent_listing_delta attachments in the conversation (after the first, only the added and removed types) and leaves it out of the tool description. A truthy CLAUDE_CODE_DISABLE_ATTACHMENTS or CLAUDE_CODE_SIMPLE keeps the list in the description.v2.1.138 or earlier → v2.1.177 ○gone AND v2.1.178 tengu_alder_compass ◇ Default false. When on, the spinner tip rotation can include New to Claude Code? Run /powerup for a quick interactive tutorial. The tip is offered only to a user with fewer than 10 startups who has not unlocked any powerups.v2.1.139 → v2.1.308 ◆in the build AND v2.1.308 tengu_amber_anchor ◇ Default false. Enables installing the background daemon as a launchctl/systemd service: when off, claude daemon install, start and restart fail as disabled in this version, the claude daemon usage text says the daemon runs on demand, and daemon messages call it background service in place of daemon. When on and the daemon cold-start mode is ask (CLAUDE_CODE_DAEMON_COLD_START, the daemonColdStart setting, or the tengu_quiet_harbor flag), starting a background session with no daemon running can offer claude daemon install instead of starting one on demand, unless that prompt was dismissed or CLAUDE_CONFIG_DIR is set.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.308 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_prism ◇ Default false. When on and auto memory is enabled, the tool result Claude receives when the user rejects or cancels a tool call gets a note appended: the user's next message may contain a correction or preference, and Claude should consider saving it to memory for future sessions.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.308 tengu_amber_relay ◇ Default false. When on, session persistence is enabled for Remote Control connections from both the interactive session and the SDK: the local transcript is synced to the remote session and later internal events are written to it as they happen. The interactive session can also enable persistence through other conditions when the flag is off.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.308 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_async_snowglobe ◇ Claude Code recognises a new local memory import background task and reads a stale note setting for memory from remote settingsnever mined ·never mined AND v2.1.286 tengu_auto_mode_classifier_queue ◇ Default false. When on, auto mode's permission-classifier calls are queued and run one at a time per agent (the main session is one queue); if the permission mode changed while a call waited so the auto decision no longer applies, the decision is dropped: the tool call is denied in dontAsk mode or where permission prompts are unavailable, and otherwise the user is asked. The env var CLAUDE_CODE_AUTO_MODE_CLASSIFIER_QUEUE, when set, takes precedence over the flag.v2.1.218 → v2.1.220 ○gone AND v2.1.308 tengu_auto_notice_once ◇ Default false. In auto mode, when on, the recurring Auto Mode Active reminders are replaced by a single meta message, The user has asked you to work without stopping for clarifying questions. ..., added only when no auto mode reminder is found since the last auto mode exit. When off, the full or sparse auto mode reminder repeats every few turns.v2.1.138 or earlier → v2.1.144 ○gone AND v2.1.308 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_billiard_aviary ◇ Default false. When on, auto memory switches to a variant stored in a tiny_memory directory instead of memory under the project's folder in ~/.claude/projects/ (when no memory directory override is set), with its own memory prompt; it also changes several other memory code paths, for example adding a created date default to the frontmatter of memory files.v2.1.138 or earlier → v2.1.190 ○gone AND v2.1.94 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_birch_kettle ◇ Default false. Enables the bundled claude-code-docs skill, which answers questions about Claude Code's own commands, flags, settings, hooks and other features, can be invoked by the user with a [question] argument, and is allowed Read, Grep, Glob and WebFetch limited to code.claude.com and platform.claude.com. The skill is enabled only when this flag is on and its registration was not marked disabled.v2.1.154 → v2.1.308 ◆in the build AND v2.1.308 tengu_bison_cairn ◇ Default false. When on, the system prompt includes the # Delivering work section (guidance on doing the requested scope, handling uncertainty mid-task and proceeding after the user reaffirms a request). The section is also included when the cached client data has tengu_bison_cairn: true, for models with the fable_5_1_prompt_bundle capability (except under certain entrypoints), and for models with the opus_5_prompt_bundle capability while tengu_fennel_godwit is off; CLAUDE_CODE_BISON_CAIRN set to a true or false value overrides all of these.never mined ·never mined AND v2.1.217 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_brass_sled ◇ Default false. When on, the PowerShell tool's prompt gets a "Developer tools verified on this machine's PATH" line listing the build and dev tools Claude Code detected, telling Claude that a tool missing from the list is likely not installed and should be checked with Get-Command first; on Windows it adds a note that the MSVC toolchain (cl, nmake, msbuild) is only on PATH inside a Visual Studio developer shell. The line is left out when no tools were detected.v2.1.198 → v2.1.308 ◆in the build AND v2.1.308 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_brick_follow ◇ Default false. When on, or when CLAUDE_CODE_VOICE_FORWARD_INTERIMS_TYPED is set, the voice dictation speech-to-text WebSocket is opened with forward_interims=typed added to its query string. The flag's value is also passed to the VS Code extension in its experiment_gates notification.v2.1.141 → v2.1.308 ◆in the build AND v2.1.308 tengu_brisk_meadow ◇ Whether 'inline tools' are enabled is now decided by a consolidated check with environment-variable overridesnever mined ·never mined AND v2.1.280 tengu_calm_bear ◇ A feature that the server could switch on is now hard-coded off, so a server-side setting can no longer enable itv2.1.288 → v2.1.289 ○gone AND v2.1.290 tengu_calm_eagle ◇ Claude Code adds two server-controlled switches, a path for remote-session tools over MCP, and a new label for Claude.ai proxy serversnever mined ·never mined AND v2.1.290 tengu_calm_nautilus ◇ Claude Code gains a switch that counts as on unless the server turns it off while Claude Code points at a non-default hostv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 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_context_build_after_resume_enabled ◇ The wake-up and retry steps for background MCP tasks now depend on a new remote switch that is off by defaultv2.1.275 → v2.1.284 ○gone AND v2.1.285 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_lantern ◇ Three existing feature gates moved position; their defaults are unchanged.v2.1.162 → v2.1.308 ◆in the build AND v2.1.248 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_cedar_sundial ◇ Default false. When on, an edit to a file that changed on disk since it was last read is allowed to proceed if the edit's old_string still matches the current contents exactly once (or matches at all with replace_all), instead of failing with File has been modified since read. A missing or ambiguous match still fails.v2.1.178 → v2.1.207 ○gone AND v2.1.308 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_cheerful_horizon ◇ Default false. When on, Claude Code stops requesting whether the claude.ai account has GitHub connected. It uses only a status it already holds, such as the one cached in config as githubWebConnectionStatusCache for the same account and organization, and a live check answers unknown.v2.1.259 → v2.1.308 ◆in the build AND v2.1.308 tengu_claudeai_skills_sync_shared_round ◇ How often Claude Code resyncs skills from claude.ai is now set by the server, and sessions can optionally share a recent syncv2.1.282 → v2.1.308 ◆in the build AND v2.1.282 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_heron ◇ Default false. Makes the context tip opus-on-pro-near-limit eligible: on a Pro plan, with an Opus model, after more than half of the usage limit is used, the tip suggests /model and says Sonnet 5 uses the weekly limit more slowly than Opus.v2.1.191 → v2.1.211 ○gone AND v2.1.308 tengu_cobalt_plinth_burnet ◇ Artifact comment and subscription operations can each be switched on separately from the server.v2.1.268 → v2.1.308 ◆in the build AND v2.1.251 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_hazel ◇ Creating an artifact from a type inside a cloud session sits behind a second switch, off.v2.1.248 → v2.1.266 ○gone AND v2.1.242 tengu_cobalt_plinth_larch ◇ You could start a private artifact from a published template, but two server switches keep it shut here.v2.1.236 → v2.1.308 ◆in the build AND v2.1.267 tengu_cobalt_plinth_linden ◇ An alternate way of serving artifact content exists but is unreachable in normal use.v2.1.251 → v2.1.308 ◆in the build AND v2.1.251 tengu_cobalt_plinth_madder ◇ Several artifact feature switches were renamed and re-gated, discarding any prior rollout.v2.1.242 → v2.1.308 ◆in the build AND v2.1.287 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_orpine ◇ Built but off unless enabled remotely: a shortcut that answers some artifact edit requests with direct file edits instead of a model replyv2.1.288 → v2.1.308 ◆in the build AND v2.1.288 tengu_cobalt_plinth_rowan ◇ Claude could browse published artifact types to start from, but both actions are switched off.v2.1.248 → v2.1.266 ○gone AND v2.1.242 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_cobalt_thicket ◇ Startup telemetry for waits on remote feature settings now records whether the fetch started early on a warm wakev2.1.154 → v2.1.308 ◆in the build AND v2.1.285 tengu_cobalt_thistle ◇ Artifact syntax highlighting and mermaid diagrams are now always on; three other gates were renamed and stay off.v2.1.211 → v2.1.238 ○gone AND v2.1.239 tengu_cobalt_wren ◇ No description from anybody.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.308 tengu_compact_cache_prefix ◇ Compaction and other side runs now pass an advisorStripPlan alongside the existing thinkingStripPlanv2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.283 tengu_concurrent_candle ◇ A new gated 'start kit' feature can auto-bundle an artifact type, design system, and REPL toolv2.1.274 → v2.1.303 ○gone AND v2.1.274 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_fox ◇ Forked subagents are on by default in interactive sessions; set CLAUDE_CODE_FORK_SUBAGENT to false to opt out.v2.1.138 or earlier → v2.1.231 ○gone AND v2.1.232 tengu_copper_gazette ◇ No description from anybody.v2.1.292 → v2.1.308 ◆in the build AND v2.1.308 tengu_copper_kite ◇ With no API key, Claude Code can now fall back to a bearer token from the environment when fetching policy limits and remote settingsnever mined ·never mined AND v2.1.285 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_coral_fern ◇ Default false. When on, the auto memory prompt gets a ## Searching past context section telling the model to search the memory directory's .md topic files first and session transcript .jsonl logs as a last resort, with an example grep -rn command or Grep tool call for each, and to use narrow search terms.v2.1.138 or earlier → v2.1.146 ○gone AND v2.1.308 tengu_cosmic_crayon ◇ No description from anybody.v2.1.299 ○gone AND v2.1.308 tengu_crimson_vector ◇ Default false. When on, and requests go to Anthropic's first-party API (the firstParty provider with no ANTHROPIC_BASE_URL or an Anthropic one), the default maximum base64 size for an image sent to the model rises from 5242880 bytes (5 MB) to 10485760 bytes (10 MB). A model whose own image limits set a maximum size keeps that value.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.308 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_dapper_lagoon ◇ An environment variable overrides whether something counts as first-party.v2.1.251 → v2.1.276 ○gone AND v2.1.251 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_doorbell_agave ◇ No description from anybody.v2.1.138 or earlier → v2.1.294 ○gone AND v2.1.308 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_drifting_nova ◇ No description from anybody.v2.1.295 → v2.1.308 ◆in the build AND v2.1.308 tengu_dune_wren ◇ Default false. Turns on the subagent-fanout-nudge tip ("Say \"fan out subagents\" and Claude sends a team"), which has a 3-session cooldown, for users signed in with a claude.ai subscription (OAuth with the user:inference scope); for everyone else the tip is eligible whatever the flag says.v2.1.141 → v2.1.179 ○gone AND v2.1.308 tengu_dunwich_bell ◇ Default false. Gates the memory recall survey: when on, and Claude's latest reply cites a memory in a complete sentence of at most 250 characters, Claude Code may show that sentence under Claude recalled a memory: and ask How was Claude's recollection? (bad, fine or good), on a random sample whose rate is tengu_velvet_moth (code default 0.2). The survey stays off while CLAUDE_CODE_DISABLE_FEEDBACK_SURVEY is set or the allow_product_feedback policy disallows it.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.105 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_church ◇ No description from anybody.v2.1.293 → v2.1.308 ◆in the build AND v2.1.308 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_fennel_godwit ◇ On Opus 5, Claude is told not to spawn subagents, workflows or deep research unless you ask.v2.1.219 → v2.1.301 ○gone AND v2.1.219 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_flint_harbor ◇ No description from anybody.never mined ·never mined AND v2.1.94 tengu_flint_harbor_share ◇ Default false. Turns on sharing for /team-onboarding: it enables the ShareOnboardingGuide tool, appends instructions for calling that tool to the command's prompt, and lets the team-onboarding-share tip be shown. Each of these also requires the allow_team_onboarding policy, an OAuth access token, and one further check to pass.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.128 tengu_foamy_sedgewick ◇ A new instruction tells Claude to treat downloads and unpacked archives as untrusted and keep them apart from its own scriptsnever mined ·never mined AND v2.1.290 tengu_garnet_finch ◇ Default false. Turns on the loop-command-nudge tip advertising /loop, which has a 3-session cooldown, for users signed in with a claude.ai subscription (OAuth with the user:inference scope); for everyone else the tip is eligible whatever the flag says. Either way the tip is hidden in a remote session (CLAUDE_CODE_REMOTE or a remote workspace) and needs cron enabled (CLAUDE_CODE_DISABLE_CRON unset and the tengu_kairos_cron flag on).v2.1.141 → v2.1.179 ○gone AND v2.1.308 tengu_gault_kestrel ◇ Default false. When on, the system prompt's guidance on hard-to-reverse actions ends its "Before deleting or overwriting, look at the target" sentence there, dropping the follow-on "If what you find contradicts how it was described, or you didn't create it, surface that instead of proceeding". The shorter wording is also used when CLAUDE_CODE_GAULT_KESTREL is set, when the Opus 5 prompt bundle applies (unless tengu_fennel_godwit is on), or when the client data key of this name is true.v2.1.257 → v2.1.259 ○gone AND v2.1.215 tengu_gentle_frost ◇ A new SuggestPluginInstall tool renders an inline card offering to install a plugin found by searchv2.1.280 → v2.1.303 ○gone AND v2.1.280 tengu_gentle_grove ◇ Claude Code adds two new switches the server can turn on or off, one of them on unless switched off remotelynever mined ·never mined AND v2.1.304 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_gorse_fathom ◇ Default false. When on, the auto-memory instructions gain a ## Project skill upkeep section: after saving a feedback memory that corrects a repeatable step, Claude is told to fold the correction into the matching .claude/skills/<name>/SKILL.md. It may only edit existing skills, except verify, which it may create.v2.1.198 → v2.1.308 ◆in the build AND v2.1.308 tengu_gorse_plover ◇ New internal flags added, including bashActFirstEnabled and three codename gates amber_astrolabe, bison_cairn, larch_cisternv2.1.248 → v2.1.287 ○gone AND v2.1.275 tengu_gypsum_kite ◇ Default false. When on and the account is on the pro plan, the Opus entries in the model picker get · ~2× usage vs Sonnet appended to their description.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.91 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