Every feature flag, and where it lived
564 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_tranquil_starlight ◇ The long Claude in Chrome guidance on GIFs, console logs, alerts and tabs is gone from its old place, and tool search now mentions a batch browser toolv2.1.305 → v2.1.308 ◆in the build AND v2.1.305
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_transcript_local_gc ◇ CLAUDE_CODE_TRANSCRIPT_LOCAL_GC, which turns on local transcript clean-up, is now accepted from managed policy settingsv2.1.217 → v2.1.308 ◆in the build AND v2.1.287
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_twinkling_boole ◇ Claude now warns when dispatching multiple write-capable agents into the same working directoryv2.1.280 → v2.1.308 ◆in the build AND v2.1.280
tengu_twinkling_hoare ◇ An internal check that used to be looked up on the fly is now a plain remote switch that falls back to offv2.1.288 → v2.1.308 ◆in the build AND v2.1.288
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_beacon ◇ Behind a switch that is off by default, PDFs with a known page count can be attached as a reference, noting whether they are small enough to read wholev2.1.290 → v2.1.296 ○gone AND v2.1.290
tengu_ultraplan_config ◇ Default null. /ultraplan and the other ultraplan entry points in the prompt input are enabled when this object's enabled field is true and two further checks pass; any other value leaves them off.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.91
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_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_usage_overage_included_models ◇ A display for overage-included models exists but has an empty allowlist until set remotely.v2.1.186 → v2.1.308 ◆in the build AND v2.1.261
tengu_valiant_crayon ◇ Whether a permission prompt hides its "always allow" choice now also depends on a server-controlled settingv2.1.300 → v2.1.308 ◆in the build AND v2.1.300
tengu_valiant_finch ◇ Claude Code now checks a new remotely controlled switch that is off by default, and it is not yet clear what it controlsv2.1.307 → v2.1.308 ◆in the build AND v2.1.307
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_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_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_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_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_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_moon ◇ Claude Code can tell the model the user pays per token and what a Bash call costs, but both notes fall back to offv2.1.290 → v2.1.295 ○gone AND v2.1.290
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_velvety_sprout ◇ The Agent tool can now keep tool results inside subagents instead of stripping them, controlled by a server-side switchv2.1.281 → v2.1.308 ◆in the build AND v2.1.301
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_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_mute ◇ Scaffolding to mute and unmute served tools has landed, with state labels and a periodic timer, but nothing calls it.v2.1.257 → v2.1.308 ◆in the build AND v2.1.281
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_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_violin_volute ◇ When the machine running a cloud session's tools disconnects, Claude Code can now reconnect the session to this device instead of ending itnever mined ·never mined AND v2.1.287
tengu_violin_willow ◇ Two new server-controlled switches, both off by default, have been built in without showing what feature they controlv2.1.290 → v2.1.308 ◆in the build AND v2.1.290
tengu_virtual_knuth ◇ Hook-approved tool calls could still be checked by the auto-mode classifier, but the flag is off.v2.1.246 → v2.1.308 ◆in the build AND v2.1.292
tengu_virtual_pancake ◇ New system-prompt note warns Claude that pasted content may carry instructions the user didn't writev2.1.274 → v2.1.308 ◆in the build AND v2.1.274
tengu_vivid_crown ◇ The reminder Claude Code sends the model in auto mode gains a setting about finishing work, off unless switched on remotelyv2.1.307 → 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_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_walnut_sconce ◇ An alternate PR-review description exists but you'll always see the original one.v2.1.218 → v2.1.267 ○gone AND v2.1.221
tengu_walnut_tiller ◇ MCP tools that declare file inputs can now take local file paths, which Claude Code uploads and replaces with referencesv2.1.296 → v2.1.308 ◆in the build AND v2.1.296
tengu_wiggly_dove ◇ A new x-claude-code-wiggly-dove request header can carry client version, permission mode, sandbox and git details, and is off by defaultv2.1.296 → v2.1.308 ◆in the build AND v2.1.296
tengu_willow_mode ◇ No description from anybody.never mined ·never mined AND v2.1.110
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_kite ◇ Claude Code has a new feature switch that is controlled from Anthropic's servers and falls back to offv2.1.287 → v2.1.308 ◆in the build AND v2.1.287
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_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_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_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_worker_owner_rows_killswitch ◇ Spawned background agents can now be given a relayed summary of the project owner's recent 'timeline' postsv2.1.267 → v2.1.308 ◆in the build AND v2.1.267
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_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_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
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
tengu_zesty_pearl ◇ On WSL, deny, ask and edit permission rules can also be checked against the other mount spelling of a path, when a switch is onv2.1.299 → v2.1.308 ◆in the build AND v2.1.299
tengu_zippy_spindle ◇ New unreleased mechanism lets a fresh prompt abort a running turn early to run soonerv2.1.271 → v2.1.308 ◆in the build AND v2.1.271
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