Every feature flag, and where it lived
27 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.
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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_1p_event_batch_config ◇ Default {}. Batch settings for Claude Code's first-party event logger: scheduledDelayMillis (falls back to OTEL_LOGS_EXPORT_INTERVAL, then 10000), maxExportBatchSize (default 200) and maxQueueSize (default 8192), plus skipAuth, maxAttempts, path and baseUrl passed to the exporter. When the value changes during a session, the logger is flushed and rebuilt with the new settings.never mined ·never mined AND v2.0.37
tengu_amber_wren ◇ Default {}. Object of default file reading limits used by the Read tool and other file reads: maxSizeBytes (default 262144), maxTokens (default 25000; CLAUDE_CODE_FILE_READ_MAX_OUTPUT_TOKENS above 0 takes precedence), includeMaxSizeInPrompt (when true, the Read prompt says files larger than the size limit return an error) and targetedRangeNudge (when true, the Read prompt tells the model to read only the part of a file it needs instead of recommending reading the whole file). Numbers that are not positive and finite fall back to the defaults, and the result is cached for the session.v2.1.138 or earlier → v2.1.267 ○gone AND v2.1.75
tengu_brass_condor_loupe ◇ A remote-config gate decides whether an internal UI element shows a summary view or stays hidden.v2.1.257 → v2.1.267 ○gone AND v2.1.257
tengu_bridge_host_profile ◇ A new setting controls how much machine info Remote Control shares when it registers a device.v2.1.260 → v2.1.308 ◆in the build AND v2.1.260
tengu_bridge_poll_interval_ms ◇ No description from anybody.never mined ·never mined AND v2.1.58
tengu_ccr_no_subscriber_hold_ms ◇ Remote-control worker connections gained tuning gates for an upload hold delay and for skipping redundant heartbeats.v2.1.259 → v2.1.308 ◆in the build AND v2.1.259
tengu_ccr_upload_trim ◇ A new telemetry gate fires when background-worker upload trimming occurs.v2.1.260 → v2.1.308 ◆in the build AND v2.1.260
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_elegant_pancake ◇ The clipboard stash-and-restore around tool use is gone, leaving only a flag check for whether the behavior is on.v2.1.257 → v2.1.308 ◆in the build AND v2.1.257
tengu_event_sampling_config ◇ Default {}. A per-event sampling table for Claude Code's own analytics events, keyed by event name. When an event's entry has a numeric sample_rate between 0 and 1, a rate of 0 drops the event, a rate below 1 keeps it with that probability and adds sample_rate to the logged fields, and a rate of 1 logs it normally; a missing entry or an invalid rate also logs normally.never mined ·never mined AND v2.0.54
tengu_grey_step2 ◇ No description from anybody.never mined ·never mined AND v2.1.68
tengu_harbor_ledger ◇ Default []. Built-in allowlist of channel plugins as {marketplace, plugin} entries; a value that fails validation counts as empty. When managed settings give no allowedChannelPlugins, a plugin requested through --channels outside development mode is skipped unless it is on this list. Separately, whatever the managed setting says, an MCP server's claude/channel capability is removed from its reported status unless its plugin is on this list (among other conditions).v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.80
tengu_heron_brook ◇ On some models Claude will stop spinning up subagents or research workflows unless you actually ask for it.v2.1.150 → v2.1.308 ◆in the build AND v2.1.257
tengu_mcp_discover_projection_prior ◇ A new gate resolves MCP discovery projection to legacy-only, all or off, and defaults to off.v2.1.259 → v2.1.308 ◆in the build AND v2.1.259
tengu_onyx_plover ◇ Default null. Configures auto dream memory consolidation: enabled: true turns it on when the autoDreamEnabled setting is unset, enabled or available being true makes the feature available, and minHours (default 24) and minSessions (default 5) set how long and how many sessions must pass since the last consolidation before another runs. Non-positive or non-numeric values use the defaults.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.94
tengu_pewter_ledger ◇ No description from anybody.never mined ·never mined AND v2.1.122
tengu_plank_river_frost ◇ No description from anybody.never mined ·never mined AND v2.1.14
tengu_polished_dewdrop ◇ A new hidden switch, settable via env var, can make certain responses silently drop or error instead.v2.1.263 → v2.1.308 ◆in the build AND v2.1.263
tengu_radiant_island ◇ A one-time prompt offering to switch your default effort to medium exists but has no text.v2.1.240 → v2.1.261 ○gone AND v2.1.263
tengu_review_bughunter_config ◇ The cloud review poll timeout is no longer hardcoded at 30 minutes and now comes from remote config.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.259
tengu_sage_compass ◇ No description from anybody.never mined ·never mined AND v2.1.98
tengu_slate_siskin ◇ Config for the memory-write survey, default {enabled: false, timeoutMs: 8000, throttleMs: 30000, summaryLineThreshold: 5}; valid fields override the defaults, and a value that fails the schema is logged and ignored entirely. With enabled on (and product feedback allowed, among other checks), a main-agent write to a file directly inside the memory directory, other than MEMORY.md, is shown in an Approve/Reject dialog, and rejecting undoes the write. throttleMs spaces dialogs apart, the dialog closes with a timeout outcome after timeoutMs, and a write over summaryLineThreshold lines gets a one-sentence model summary.v2.1.138 or earlier → v2.1.161 ○gone AND v2.1.120
tengu_sm_config ◇ No description from anybody.never mined ·never mined AND v2.0.68
tengu_swann_brevity ◇ No description from anybody.never mined ·never mined AND v2.1.66
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_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_willow_mode ◇ No description from anybody.never mined ·never mined AND v2.1.110
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