Feature flags, all 2,081.

tengu_review_workflow_routing ◇ Two server-side switches that steered review behaviour are gone, so reviews no longer vary by remote config.v2.1.160 → v2.1.231 ○gone AND v2.1.232 tengu_rosy_pine ◇ A prompt can offer to continue a resumed old session on a newer model of the same family; it is off unless switched on remotelyv2.1.286 ○gone AND v2.1.286 tengu_rustling_pixel ◇ Claude Code can now keep extended-thinking content across any model switch, not just upgradesv2.1.280 → v2.1.308 ◆in the build AND v2.1.280 tengu_sable_thrush ◇ Claude Code now spots server-tagged narration thinking, but the display change stays off by default.v2.1.240 → v2.1.250 ○gone AND v2.1.251 tengu_saddle_lantern ◇ The memory prompt variant and the skill-suggestion rollout are now fields on the process config.v2.1.260 → v2.1.306 ○gone AND v2.1.248 tengu_saffron_anchor ◇ A prompt-and-context experiment switch was renamed and four other switches disappeared entirely.v2.1.179 → v2.1.245 ○gone AND v2.1.246 tengu_saffron_credits_only_tiers ◇ No description from anybody.v2.1.190 → v2.1.308 ◆in the build AND v2.1.190 tengu_saffron_lattice ◇ Whether a model needs consent or usage credits can now be decided per model rather than for the whole planv2.1.170 → v2.1.308 ◆in the build AND v2.1.299 tengu_sage_compass2 ◇ An internal advisor model concept exists, with sub-agents told never to consult it, and only runs under first-party auth plus a flag.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.282 tengu_scalable_quiche ◇ Artifacts could keep being watched even when your session is not running, but that is off.v2.1.227 → v2.1.238 ○gone AND v2.1.239 tengu_sedge_lantern ◇ /recap and the Session recap settings entry now work for everyone without an experiment flag.v2.1.138 or earlier → v2.1.222 ○gone AND v2.1.223 tengu_serialized_petal ◇ A new setting controlled from Anthropic's servers is a number that is 0 unless the server sets it and two conditions are metv2.1.302 → v2.1.308 ◆in the build AND v2.1.302 tengu_silent_heron ◇ When a background shell command produces no new output for a while, Claude is sent a check-in note, if a server sets the waiting timev2.1.290 → v2.1.308 ◆in the build AND v2.1.290 tengu_slate_anchor ◇ Some feature flags now stay fixed for the whole session, including a new one that is on.never mined ·never mined AND v2.1.248 tengu_slate_harrier ◇ Claude no longer spends up to a minute investigating before asking you a clarifying question.v2.1.138 or earlier → v2.1.222 ○gone AND v2.1.223 tengu_slate_ibis ◇ Explore and plan agents are now always on unless you set the disable environment variable yourself.v2.1.217 → v2.1.220 ○gone AND v2.1.221 tengu_sleepy_shore ◇ The web search tool has a built-in choice between a quick, cheap search and a slower, thorough one, but it stays off unless configuredv2.1.282 → v2.1.308 ◆in the build AND v2.1.283 tengu_sleepy_snowflake ◇ New 'sleepy_snowflake' setting controls how widely kept reminders are delivered, per model and conversationv2.1.271 → v2.1.308 ◆in the build AND v2.1.282 tengu_snug_platypus ◇ 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_snug_reef ◇ MCP servers that failed with a retryable error can be retried automatically at the start of each turn, for a limited number of turnsv2.1.295 → v2.1.308 ◆in the build AND v2.1.295 tengu_snug_storm ◇ A notice for Max and Team plans about an API credit link is built in, with its wording supplied remotely and a limit on how often it showsv2.1.302 → v2.1.308 ◆in the build AND v2.1.302 tengu_soft_slate_nudge ◇ Default "baseline". Setting it to "off" stops the periodic todo and task reminders that are otherwise attached after 10 assistant turns without a todo or task update and 10 turns since the last reminder; any other value keeps them. CLAUDE_CODE_TODO_REMINDER_MODE overrides it.v2.1.178 → v2.1.308 ◆in the build AND v2.1.178 tengu_sorrel_avocet ◇ Claude could start deep research on its own instead of waiting for you to ask, if enabled.v2.1.219 → v2.1.308 ◆in the build AND v2.1.281 tengu_sorrel_trellis_newel ◇ Artifact-comment auto-reply gains a fork/handoff path behind the tengu_sorrel_trellis_newel gatev2.1.268 → v2.1.308 ◆in the build AND v2.1.269 tengu_sorted_flute ◇ A new internal check can now silently skip saving flag settings changes to diskv2.1.280 → v2.1.285 ○gone AND v2.1.286 tengu_squishy_newt ◇ Messages relayed from a project's coordinator session are handled by a switch that defaults to on, and the model is told when one is waitingv2.1.282 → v2.1.300 ○gone AND v2.1.301 tengu_startup_announcements ◇ Default []. A list of startup announcements, each with id, text, optional title, footer and requiresModel, priority (default 0), maxImpressions (default 3) and accentBar (default true). Claude Code picks the highest-priority entry that has been shown fewer than maxImpressions times and whose requiresModel, if set, passes a model check; a value that fails the schema falls back to [].never mined ·never mined AND v2.1.187 tengu_steadfast_wren ◇ Claude Code adds several new remotely controlled switches whose purpose is not yet visiblenever mined ·never mined AND v2.1.299 tengu_steady_marshmallow ◇ Identity changes mid-session can now defer a policy reload instead of immediately reloading as an account changenever mined ·never mined AND v2.1.274 tengu_steady_sunbeam ◇ 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_still_kestrel ◇ Stored credentials could survive a token change, but not in this build.never mined ·never mined AND v2.1.248 tengu_stone_shell ◇ Rewritten memory rules would make Claude save corrections and environment quirks immediately, before replying.v2.1.212 → v2.1.285 ○gone AND v2.1.286 tengu_structured_creek ◇ In auto mode, tool calls that Claude Code generates itself now skip the classifier and are allowedv2.1.281 → v2.1.284 ○gone AND v2.1.285 tengu_sunny_locket ◇ A remotely controlled option can compact a long, idle conversation shortly before its one-hour prompt cache runs outv2.1.283 → v2.1.306 ○gone AND v2.1.307 tengu_sunset_penguin_opus46 ◇ Default "2026-06-29". Date (parsed with Date.parse) on which Opus 4.6 fast mode is removed: when fast mode is turned on while the current model is claude-opus-4-6 and the date is still in the future, Claude Code shows the warning Opus 4.6 fast mode is deprecated and will be removed on <date>, with the date formatted like Jun 29 in UTC. An unparseable or past date shows no warning.v2.1.174 → v2.1.191 ○gone AND v2.1.174 tengu_sunset_penguin_opus47 ◇ Default "2026-07-25". Removal date for Opus 4.7 fast mode: when fast mode is turned on (via /fast or the picker) while the current model is claude-opus-4-7 and the date is still in the future, a warning notice Opus 4.7 fast mode is deprecated and will be removed on <date> appears, with the date shown like Jul 25 in UTC. An unparseable or past date shows no notice.v2.1.196 → v2.1.220 ○gone AND v2.1.196 tengu_surface_failed_mcp_servers ◇ MCP servers that fail to connect are now reported to you by default.v2.1.205 → v2.1.308 ◆in the build AND v2.1.247 tengu_surreal_dali ◇ Claude can read a routine's past runs and detailed run log, but a server flag gates it.v2.1.138 or earlier → v2.1.250 ○gone AND v2.1.251 tengu_swift_lynx ◇ A hidden new tool lets Claude open the page for a startup promotional offerv2.1.275 → v2.1.308 ◆in the build AND v2.1.296 tengu_synthetic_fog ◇ When a remote tool answer is too big, Claude Code now shrinks embedded images to fit before refusing, and the size limit can be set remotelyv2.1.284 → v2.1.308 ◆in the build AND v2.1.284 tengu_tab_read_sep ◇ The tab-aware read separator flag is read fresh each time but still off.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.248 tengu_tallow_quoit ◇ Team and Enterprise members who hit their own spend limit in VS Code can get a 'Request more' button that notifies their organization's adminsv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_teleport_send_to_cloud ◇ A menu to send your session to the cloud exists but stays hidden unless the server enables it.v2.1.229 → v2.1.308 ◆in the build AND v2.1.247 tengu_tender_truffle ◇ A check that matched MCP servers against a remote list can now read a single on/off switch instead, depending on how it is callednever mined ·never mined AND v2.1.300 tengu_thistle_grebe ◇ Subagent nudging behaviour can be picked per model, but the whole feature stays behind a gate.never mined ·never mined AND v2.1.227 tengu_thrifty_sonic ◇ Auto mode can be told to do file reads, searches and edits through Bash, but it's off by default.v2.1.221 → v2.1.303 ○gone AND v2.1.232 tengu_tidy_axolotl ◇ Claude Code reads a server-controlled switch whose built-in value is on; what it controls is not knownv2.1.292 → v2.1.299 ○gone AND v2.1.300 tengu_tidy_lemon ◇ A remotely controlled option lets team members send a more-usage request to their admin directly from /rate-limit-optionsv2.1.283 → v2.1.308 ◆in the build AND v2.1.283 tengu_tingly_pike ◇ How Claude Code prompts the model to continue after hitting its output limit, and when it gives up, can now be set by a server switchv2.1.305 → v2.1.308 ◆in the build AND v2.1.305 tengu_tool_cgroup_exclude_classes ◇ Memory limits now reach npm, git, tmux, LSP, MCP and hooks, but everything except Bash is excluded.never mined ·never mined AND v2.1.246 tengu_tool_memory_cgroup ◇ On Linux you can cap memory for shell commands so a runaway process cannot eat your machine.v2.1.233 → v2.1.245 ○gone AND v2.1.295 tengu_tranquil_crescent ◇ Claude Code adds three new internal feature gates: typed_koala, zinc_harbor, tranquil_crescentnever mined ·never mined AND v2.1.275 tengu_twinkling_swan ◇ Workflow pauses for usage limits gain a check on whether they would wait, plus a new remotely set number with a capv2.1.288 → v2.1.295 ○gone AND v2.1.288 tengu_twinkly_prism ◇ 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_ultrareview_awareness ◇ A startup tip suggests cloud branch review and shows how many free reviews you have left.v2.1.224 → v2.1.303 ○gone AND v2.1.224 tengu_umber_kestrel ◇ Gates the EndConversation tool, which lets Claude end a conversation after sustained abuse and an earlier warning. Code default false; true enables it for the cli entrypoint, and an object {scope: "<regex>"} enables it for entrypoints that fully match the regex (case-insensitive, falling back to cli if the regex is invalid). It also applies only to a fixed list of model families and versions.v2.1.206 → v2.1.308 ◆in the build AND v2.1.206 tengu_umber_lattice ◇ Published artifacts can gain a document database Claude reads and writes, off unless you set the env var.v2.1.224 → v2.1.266 ○gone AND v2.1.267 tengu_vellum_ash ◇ Default []. A list of model name fragments: when the current main model's name contains any non-empty entry, TodoWrite and the task tools (TaskCreate, TaskGet, TaskUpdate, TaskList) are disabled and the todo and task reminder messages are not added. A non-array or empty value changes nothing.v2.1.202 → v2.1.232 ○gone AND v2.1.233 tengu_velvet_cascade ◇ Which models get the simple system prompt is now decided locally, not by remote config.v2.1.138 or earlier → v2.1.226 ○gone AND v2.1.227 tengu_velvet_falcon_model ◇ Default "". A model name substring: when CLAUDE_CODE_VELVET_FALCON is unset and the cached client data has no non-empty string velvet_falcon_model, any model whose normalized name contains this non-empty value is treated as the falcon class, alongside claude-fable-5 and claude-mythos-5. An empty value adds no models.v2.1.163 → v2.1.173 ○gone AND v2.1.163 tengu_velvet_ibis ◇ MAX_MCP_OUTPUT_TOKENS is still honoured first, but it's no longer sanity-checked as a number.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.248 tengu_velvet_mallet ◇ An alternate prompt wording for two tools exists but stays off unless you set an environment variable.v2.1.166 → v2.1.195 ○gone AND v2.1.228 tengu_velvet_static ◇ Default false. Enables the /radio command, described as Listen to Claude FM lo-fi radio; with the flag off the command is not enabled. The command is not available in non-interactive mode.v2.1.138 or earlier → v2.1.250 ○gone AND v2.1.251 tengu_version_config ◇ Startup version-check logic was refactored into its own function, no behavior changenever mined ·never mined AND v2.1.290 tengu_violin_camber ◇ Commands that set simple shell variables are re-checked with the values filled in before being held as possibly writing settingsnever mined ·never mined AND v2.1.295 tengu_violin_chinrest ◇ Notices for shared/served folders are now deduplicated and capped instead of fired one by onenever mined ·never mined AND v2.1.283 tengu_violin_duet ◇ Claude Code gains switches for a connected mode for cloud sessions and a file sync that depends on it, both off unless turned on remotelynever mined ·never mined AND v2.1.284 tengu_violin_ebony ◇ A new, switched-off check tells shell commands that only name app identifiers apart from ones that name settings filesv2.1.295 → v2.1.299 ○gone AND v2.1.293 tengu_violin_fret ◇ Headless and desktop cloud sessions in auto or bypass mode now ask once whether Claude may act unattended, and the answer is saved.v2.1.259 → v2.1.308 ◆in the build AND v2.1.281 tengu_violin_pegbox ◇ Remote sessions started from the desktop app now need a second flag as well.never mined ·never mined AND v2.1.284 tengu_violin_purfling ◇ A forwarded shell command that writes your machine's Claude Code settings files is blocked or sent to you for approvalv2.1.283 → v2.1.287 ○gone AND v2.1.288 tengu_violin_soundpost ◇ Directory sync gains a pre-attach safety check to verify a checkout can attach cleanly, behind a new gatev2.1.277 → v2.1.281 ○gone AND v2.1.284 tengu_violin_spruce ◇ Remote callers using this machine's tools can get a report of its CPU, memory, disk and installed CLI tools, and can run background Bash commandsv2.1.287 → v2.1.308 ◆in the build AND v2.1.287 tengu_walnut_gable ◇ Publishing an artifact now strips all nested preview wrappers, not just the outermost one.v2.1.234 → v2.1.238 ○gone AND v2.1.239 tengu_webagent_mcp_bridge ◇ The hearthbot chat bridge can now auto-allow many more read-only actions without a permission promptv2.1.273 → v2.1.274 ○gone AND v2.1.273 tengu_willow_tern ◇ A writing-style prompt block can be forced on with an environment variable; otherwise it stays off.v2.1.248 → v2.1.294 ○gone AND v2.1.247 tengu_windows_credman ◇ Several internal services now receive login credentials directly instead of grabbing whatever token is lying around.never mined ·never mined AND v2.1.269 tengu_wise_bear_copy ◇ Usage-limit reset messages now map limit types to session, weekly, or model-based reset scopesv2.1.280 → v2.1.308 ◆in the build AND v2.1.280 tengu_wise_star ◇ A flag decides whether the file-delivery tool is held back from the initial tool list.v2.1.248 → v2.1.258 ○gone AND v2.1.248 tengu_witty_kay ◇ Two new feature switch names were added to an existing list of switch namesv2.1.307 → v2.1.308 ◆in the build AND v2.1.307 tengu_wondrous_acorn ◇ A new tether subsystem recreates a thinking thread when the server drops earlier thinking due to a prefix mismatchv2.1.280 → v2.1.308 ◆in the build AND v2.1.280 tengu_woolly_parsnip ◇ Auto mode now stops itself instead of looping forever when safety checks keep failingv2.1.280 → v2.1.284 ○gone AND v2.1.285 tengu_woven_harbor ◇ Cloud sessions from review or plan sources can use a newer creation endpoint allowing --project grouping.v2.1.227 → v2.1.241 ○gone AND v2.1.224 tengu_zany_flask ◇ Attachment uploads now have separate remote settings for preview and scaled copies, and Claude is told when an image went out scaled downv2.1.287 → v2.1.308 ◆in the build AND v2.1.292 tengu_zany_pike ◇ After over 65 minutes idle, Claude Code can ask to clear older tool results from the conversation, keeping the last 5; off by defaultnever mined ·never mined AND v2.1.284