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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Reference / Feature flags

tengu_auto_mode_decision

A Claude Code feature flag, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

What it is

Subagent results can be tagged to show which parts Claude Code wrote versus the model.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.242.

Presence across releases

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Gate readings

No release here has a gate table behind it for this flag. Most published releases have none at all: the readings exist only for versions the pipeline captured flag state on.

Changelog entries naming it

  1. v2.1.246Hosts can turn off the auto-mode handback classifier

    A host can set classifyHandoff false to skip the classifier deciding whether a subagent hands control back.

    gate cited by this entry

  2. v2.1.242Subagent results can carry a provenance frame that skips the hand-off review

    Subagent results can be tagged to show which parts Claude Code wrote versus the model.

    gate cited by this entry

Documentation pages

None of Anthropic's documentation pages this site has a copy of carries this name.

Names beside it

Every feature flag in the inventory starting tengu_auto_mode, up to twelve of them.

tengu_auto_mode_beta_latchThe automatic retry that would drop a rejected classifier beta can never trigger in this build. never mined tengu_auto_mode_classifier_queueNo description from anybody. 2.1.218 tengu_auto_mode_configAuto-mode permission checks can score risk 0-100 instead of yes/no, but only for configured models. 2.1.138 tengu_auto_mode_denial_dialog_auto_deniedAuto mode can show a prompt that denies itself after two minutes when you are away; off by default. never mined tengu_auto_mode_denial_limit_exceededMore auto-mode permission events record whether the tool was from an MCP server. never mined tengu_auto_mode_entry_warning_shownNew automatic prompts appear: a first-time auto mode warning, a spending threshold dialog and a worktree tip. never mined tengu_auto_mode_env_onboarding_laterThe auto-mode environment setup offer only shows the fuller flow after you've declined several times. never mined tengu_auto_mode_fallback_to_askIn auto mode, a question can be classified and handled instead of halting the run. never mined tengu_auto_mode_hook_allow_funneledHook-approved tool calls could still be checked by the auto-mode classifier, but the flag is off. never mined tengu_auto_mode_malformed_tool_inputAuto-mode approval events now note whether the tool came from an MCP server. never mined tengu_auto_mode_outer_retryAuto mode retries instead of failing when the model that routes your turn is briefly unavailable. never mined tengu_auto_mode_repo_visibility_lookup_failedNo description from anybody. never mined

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the feature flag does. All feature flags.