Every feature flag, and where it lived
14 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_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_birch_compass ◇ Default false. When on, the usage limits view adds a cost breakdown panel that scans local session files (showing Scanning local sessions… meanwhile) and, for a day or week window, lists the behaviours above a percentage threshold plus agents, skills and plugins, with tips. If any session file is over 200MB it shows Cannot compute breakdown instead.v2.1.138 or earlier → v2.1.148 ○gone AND v2.1.108
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_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_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_hazel_osprey ◇ Default false. Turns on the context-hint-2026-04-09 beta for main-thread requests that carry first-party betas: once an estimate of savable tokens reaches 20000, the request body gets context_hint with enabled: true and a target_tokens_saved from tengu_hazel_osprey_floor (default 75000, omitted unless above 0). API errors such as 422, 424, 409, 529 or an invalid request turn the hint off again.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.110
tengu_madrone_spindle_corbel ◇ Publish results can note when an artifact was seeded from a comment thread, prompting a reply.v2.1.260 → v2.1.308 ◆in the build AND v2.1.260
tengu_noreread_q7m_velvet ◇ No description from anybody.never mined ·never mined AND v2.1.91
tengu_quiet_harbor ◇ Default false. Supplies the background daemon cold-start mode when neither CLAUDE_CODE_DAEMON_COLD_START (transient or ask) nor the daemonColdStart setting is set: true gives ask, false gives transient. With ask, when no background daemon is running and the install prompt has not been dismissed, Claude Code (under further conditions) returns an install request telling you to run claude daemon install instead of spawning a transient daemon.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.120
tengu_slate_finch ◇ Default false. When on and the account's plan is pro, the effort messages (Set effort level to ... and Current effort level: ...) describe high with an added note that it burns fastest and that medium handles most tasks.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.91
tengu_snippet_save ◇ No description from anybody.never mined ·never mined AND v2.1.59
tengu_tussock_oriole ◇ Default false. When on, the team-artifacts tip can show New from your team: ..., listing project skills and commands by teammates that the user has not seen yet, and skill names from project settings can show a · by <author> attribution. Off, neither appears.v2.1.138 or earlier → v2.1.308 ◆in the build AND v2.1.117
tengu_vellum_lantern ◇ Default false. Turns on the alternate prompt mode that CLAUDE_CODE_SIMPLE_SYSTEM_PROMPT controls, for eligible models (claude-opus-4-7, model IDs ending in -eap, or models listed in the simple_system_prompt client data or the tengu_velvet_cascade flag). -eap and listed models get the mode whether or not this flag is on, and a truthy or explicitly falsy CLAUDE_CODE_SIMPLE_SYSTEM_PROMPT overrides both.v2.1.138 or earlier → v2.1.153 ○gone AND v2.1.120
tengu_wise_comet ◇ Manual compaction now decides whether to strip thinking blocks, gated for adaptive thinking only.v2.1.260 → v2.1.308 ◆in the build AND v2.1.260
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