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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
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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

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_cobalt_harbor_notice ◇ A resume-precheck gate is now passed to the VS Code extension, on by default.v2.1.191 → v2.1.308 ◆in the build AND v2.1.284 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_lantern ◇ Quick web setup stays off, now behind a named helper needing a flag and two entitlements.v2.1.138 or earlier → v2.1.247 ○gone AND v2.1.248 tengu_cobalt_plinth ◇ PR review artifact pages can show a pinned button that approves the pull request from your GitHub account.v2.1.172 → v2.1.308 ◆in the build AND v2.1.260 tengu_cobalt_plinth_alder ◇ Claude can now read back a published artifact's contents; browsing, multi-file publishing and deletion are built but off.v2.1.239 → v2.1.308 ◆in the build AND v2.1.285 tengu_cobalt_plinth_aspen ◇ The preview browser is locked to the local server and refuses to run if the lock fails.v2.1.247 → v2.1.308 ◆in the build AND v2.1.292 tengu_cobalt_plinth_bracken ◇ You could start a private artifact from a published template, but two server switches keep it shut here.v2.1.216 → v2.1.308 ◆in the build AND v2.1.273 tengu_cobalt_plinth_bryony ◇ Claude Code now always tells the artifact system it supports five-class permission asks, instead of depending on a setting or remote switchv2.1.273 → v2.1.294 ○gone AND v2.1.295 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_campion ◇ Publish checks could warn about page thumbnails, but the experiment is off.v2.1.251 → v2.1.308 ◆in the build AND v2.1.257 tengu_cobalt_plinth_comfrey ◇ A new flag affects relay routing when reading published artifact files.v2.1.261 → v2.1.308 ◆in the build never read 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_dataviz ◇ The chart skill hint now only appears if the dataviz skill is actually installed.v2.1.198 → v2.1.308 ◆in the build AND v2.1.247 tengu_cobalt_plinth_direct ◇ Artifact availability now hinges on one gate, and direct upload kicks in for create paths.v2.1.172 → v2.1.238 ○gone AND v2.1.239 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_fern ◇ Artifact viewer drops a special-case upgrade from 'skip' to 'set' read statusv2.1.174 → v2.1.308 ◆in the build AND v2.1.281 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_holly ◇ Artifacts gain full pin and unpin actions, wired end to end but off by default behind a gate with an env override.v2.1.259 → v2.1.284 ○gone AND v2.1.285 tengu_cobalt_plinth_hornbeam ◇ No description from anybody.v2.1.292 → v2.1.294 ○gone never read 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_laurel ◇ Default false. When on, the Artifact tool's input schema gains an optional lang parameter, a BCP-47 language tag (such as ja or pt-BR) that becomes the published page's <html lang>.v2.1.212 → v2.1.270 ○gone AND v2.1.269 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_loquat ◇ MCP config building gets a new caching layer, currently unread/offv2.1.265 → v2.1.266 ○gone AND v2.1.265 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_medlar ◇ Artifact creation replies can now mark a URL as agent-scoped, controlled by a gated flagv2.1.260 → v2.1.308 ◆in the build AND v2.1.275 tengu_cobalt_plinth_moss ◇ Publishing over a stale artifact now fetches the current version so Claude can merge and retry.v2.1.227 → 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_osier ◇ Default false. When on, listing artifacts or the instances of an Artifact type with any scope other than mine is refused with shared-scope listing is disabled (reason scope_disabled).v2.1.210 → v2.1.267 ○gone AND v2.1.269 tengu_cobalt_plinth_putguard ◇ Default true. When on, an artifact publish upload PUT (the page or its thumbnail image) that returns a 2xx status without an x-goog-generation response header is treated as failed: it is reported as status 403 with the error upload intercepted: 2xx without x-goog-generation, on the assumption that a proxy answered instead of Google Cloud Storage. When off, any 2xx response counts as a successful upload.v2.1.193 → v2.1.238 ○gone AND v2.1.239 tengu_cobalt_plinth_quince ◇ Published Artifacts get per-block anchor ids so links can point at a specific block.v2.1.236 → v2.1.238 ○gone AND v2.1.239 tengu_cobalt_plinth_reader_persist ◇ A prompt-and-context experiment switch was renamed and four other switches disappeared entirely.v2.1.191 → v2.1.245 ○gone AND v2.1.246 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_sedge ◇ Reading an artifact as a public non-member reader still refuses; the switch stays off in this build.v2.1.216 → v2.1.308 ◆in the build AND v2.1.275 tengu_cobalt_plinth_sill ◇ A lock primitive's timeout can now be remotely tuned, though no server value is set yet.v2.1.260 → v2.1.308 ◆in the build AND v2.1.260 tengu_cobalt_plinth_sloe ◇ The Artifact tool's instructions now come in versions v0, v1 and v2, picked once per session by an env var, the session origin or a flagv2.1.281 → v2.1.295 ○gone AND v2.1.281 tengu_cobalt_plinth_sorb ◇ Artifact publishing skips its design-skill reminder if quickstart guidance was already shown for that callv2.1.257 → v2.1.308 ◆in the build AND v2.1.285 tengu_cobalt_plinth_sorrel ◇ Cloud sessions may route artifact calls through a gateway relay, falling back to direct calls on failure.v2.1.234 → v2.1.308 ◆in the build AND v2.1.287 tengu_cobalt_plinth_tansy ◇ Several artifact feature switches were renamed and re-gated, discarding any prior rollout.v2.1.242 → v2.1.308 ◆in the build AND v2.1.282 tengu_cobalt_plinth_teasel ◇ Publishing an artifact skips its re-read check when your last read matched the live version.v2.1.248 → v2.1.299 ○gone AND v2.1.248 tengu_cobalt_plinth_thistle ◇ Several artifact feature switches were renamed and re-gated, discarding any prior rollout.v2.1.242 → v2.1.270 ○gone AND v2.1.242 tengu_cobalt_plinth_thrift ◇ A new artifact-related server switch exists and stays off without a server value.v2.1.242 → v2.1.308 ◆in the build AND v2.1.242 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_raccoon ◇ No description from anybody.v2.1.138 or earlier → v2.1.152 ○gone AND v2.1.105 tengu_cobalt_ridge ◇ A new remote PowerShell tool lets Claude Code run PowerShell commands on an attached Windows machine instead of locallyv2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.280 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_code_diff_cli ◇ No description from anybody.never mined ·never mined AND v2.1.50 tengu_code_review_routed ◇ Code review logging now records why a given effort level was picked for your run.never mined ·never mined never read tengu_collage_kaleidoscope ◇ No description from anybody.never mined ·never mined AND v2.1.73 tengu_compact ◇ Automatic conversation compaction now flags when foreign or teammate content is being summarizednever mined ·never mined never read 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_compact_line_prefix_killswitch ◇ No description from anybody.never mined ·never mined never read tengu_compact_preserved_unanchored ◇ Transcript saving and cleanup logic is consolidated in one place; nothing changes for you.never mined ·never mined never read tengu_compact_replaced_by_hook ◇ Compaction now records when a hook fully replaced Claude Code's own summarization logicnever mined ·never mined never read tengu_compact_streaming_retry ◇ No description from anybody.never mined ·never mined never read tengu_compass_dial ◇ Default false. When true, browsing prompt history shows a dim position label at the top of the prompt box, History N/M (or History while the total is not yet known), and Claude Code counts the history entries to fill in the total.v2.1.157 → v2.1.177 ○gone AND v2.1.308 tengu_compiled_acorn ◇ A new flag controls how poll and mid-turn event text is formatted.never mined ·never mined AND v2.1.308 tengu_composed_quail ◇ Two new server-controlled switches govern whether reset and rate-limit events get forwarded.v2.1.224 → v2.1.308 ◆in the build AND v2.1.224 tengu_composed_treehouse ◇ When tools added later in a session are withdrawn because they were denied, Claude Code marks this, behind a switch that is off by defaultv2.1.304 → v2.1.308 ◆in the build AND v2.1.304 tengu_compressed_river ◇ A new confirmation dialog appears when a tool tries to read a file outside the allowed listv2.1.268 → v2.1.308 ◆in the build AND v2.1.268 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_concurrent_onquery_detected ◇ An analytics event, not a feature flag. Claude Code logs it, with no fields, when a new query is submitted while another query is still running; the new query does not run, and its user prompts (other than some internal and notification messages) are put back on the input queue.never mined ·never mined never read tengu_concurrent_sessions ◇ An analytics event, not a feature flag. Claude Code logs it at startup, after registering the session and counting the live sessions in its session registry, when that count is 2 or more; it carries num_sessions.never mined ·never mined never read tengu_concurrent_shore ◇ Waiting on a backgrounded shell command now keeps a task alive, controlled by a remote setting defaulting on.v2.1.242 → v2.1.308 ◆in the build AND v2.1.242 tengu_config_auth_loss_prevented ◇ A second global-config writer goes through the storage backend with better corruption handling.never mined ·never mined never read tengu_config_auto_repaired ◇ An analytics event, not a feature flag. Claude Code logs it when a locked save of the global config re-reads the config file, hits a parse error, and rewrites the file from its cached config instead. It carries file_size_before (the size of the unparseable file) and had_cached_auth (whether the cached config had an oauthAccount or hasCompletedOnboarding: true).never mined ·never mined never read tengu_config_changed ◇ Plugin-provided settings now appear in /config, with their values redacted in telemetrynever mined ·never mined never read tengu_config_fallback_skipped_contention ◇ Saving or deleting config now retries with backoff when the lock is held instead of failing outright.never mined ·never mined never read tengu_config_lock_contention ◇ The settings lock contention counter stops counting unrelated storage failures.never mined ·never mined never read tengu_config_parse_error ◇ Keychain lookups fail quietly instead of crashing, and unparseable config files now get reported.never mined ·never mined never read tengu_config_stale_write ◇ A second global-config writer goes through the storage backend with better corruption handling.never mined ·never mined never read tengu_content_block_healed ◇ A malformed response block is repaired or dropped rather than crashing your session.never mined ·never mined never read tengu_context_tip_classifier_outcome ◇ An analytics event, not a feature flag. Claude Code logs it each time the context tips classifier (a model call with query source context_tip_classifier) finishes, with outcome one of tip, tip_ineligible, no_tip, parse_failure, error or outer_error. Other fields, when present: classifierLogId, durationMs, eligibleIds, featureId, inputTokens, cachedInputTokens, outputTokens and error details.never mined ·never mined never read tengu_context_usage_bulk_counts ◇ A bulk per-tool token counting path exists but is gated behind two flags, both off by default.v2.1.261 → v2.1.308 ◆in the build AND v2.1.261 tengu_continue ◇ claude -p --continue now says a matching session is running in the background instead of silently finding nothing.never mined ·never mined never read tengu_conversation_forked ◇ An analytics event, not a feature flag. Claude Code logs it after it forks the current conversation into a new branch session and saves that session's title (by default the first prompt followed by (Branch) or (Branch N)). It carries message_count and has_custom_title.never mined ·never mined never read tengu_conversation_rewind ◇ Compaction cleanup and rewind both notify a shared hook with a reason string.never mined ·never mined never read tengu_convolute_arcades_retry ◇ A hidden, server-controlled fallback path can now retry refused model turns under different, less visible telemetry namesnever mined ·never mined never read tengu_convolute_arcades_tools ◇ A hidden, server-controlled fallback path can now retry refused model turns under different, less visible telemetry namesnever mined ·never mined never read tengu_coordinator_panel ◇ No description from anybody.v2.1.157 → v2.1.308 ◆in the build never read 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_heron ◇ Behind a remote switch, skills named claude-ai: or anthropic-skills: must really come from the matching source to be usedv2.1.282 ○gone AND v2.1.282 tengu_copper_hinge_wren ◇ Live document reads gain new fields for tracking update sequence and a gated deadline optionv2.1.267 → v2.1.308 ◆in the build AND v2.1.267 tengu_copper_kestrel ◇ Default true. Gates effort changes over Remote Control: when on, a connected client can set effortLevel through apply_flag_settings and the session reports its effort to the bridge as effort_level metadata. When off, such a request fails with effort changes over Remote Control are turned off.v2.1.234 → v2.1.308 ◆in the build never read 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_lantern ◇ Default false. A recall switch for the Claude Code background daemon when it runs as an installed service: the supervisor checks it on each poll, and when it is on it logs service recall flag set, stops its workers, shuts down with cause service_recall and uninstalls the service. A daemon started as a transient process ignores it.v2.1.138 or earlier → v2.1.308 ◆in the build never read 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_anchor ◇ A remote task stuck waiting on input now fails as blocked and tells you where to answer it.v2.1.239 → v2.1.308 ◆in the build AND v2.1.281 tengu_coral_beacon ◇ Default false. When on, the rate-limit options menu adds an option Upgrade to Team plan (labelled Switch to Team plan on Max 20x) for users not on a Team or Enterprise plan, if the upgrade action is enabled. It also lets the rate-limit upsell menu be offered to such users when the upgrade command is available (not disabled by DISABLE_UPGRADE_COMMAND and not an Enterprise plan), in cases where the plan's upgrade paths would otherwise not qualify.v2.1.138 or earlier → v2.1.258 ○gone AND v2.1.251 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_coral_whistle ◇ No description from anybody.never mined ·never mined never read
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