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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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tengu_bridge_child_tool_diff

flag in the build JSON

A Claude Code feature flag, read out of the shipped bundle. It has been in the build since v2.1.269, including the newest one read.

New tengu_bridge_child_tool_diff setting controls whether child-session file edits are shown as diffs to a parent session

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.269.

First seen v2.1.269 11 Sep 2026
Last seen v2.1.319 6 Nov 2026
Builds47 / 159on this box, as of v2.1.319
Written about v2.1.269 first named in a changelog, 11 Sep 2026
v2.1.269in the build not in the build never minedv2.1.319

In the changelogs

3

Releases whose published page names tengu_bridge_child_tool_diff.

  1. v2.1.273
    tengu_bridge_child_tool_diff now defaults on for bridge sessions

    Tool-call diffs are now sent for Remote Control bridge sessions, and always for remote ones

    gate cited by this entry, found in this entry's text

  2. v2.1.273
    Bridge child sessions now default to computing tool-use diffs

    Bridge-hosted child sessions now default to computing a git diff for Write and Edit tool calls

    gate cited by this entry

  3. v2.1.269
    Bridged/child-session tool diffs gated behind tengu_bridge_child_tool_diff (default off)

    New tengu_bridge_child_tool_diff setting controls whether child-session file edits are shown as diffs to a parent session

    gate cited by this entry, found in this entry's text, named in this entry

Gate readings

2
ReleaseResolvedThis accountAnonymousCompiled default
v2.1.273 read on another version Not enough to say no value returned no value returned on
v2.1.269 Not enough to say no value returned no value returned off

Two arms, because they disagree: this account is the one account this site reads and anonymous is a baseline with no identity attached. A reading says nothing about your account, and off cannot rule out a rollout both readings sit outside of. What these readings can and cannot show.

First cited

2

The earliest release whose published evidence quoted tengu_bridge_child_tool_diff was v2.1.269, 11 Sep 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.

ReleaseDateThe span that was quoted
v2.1.26911 Sep 2026tengu_bridge_child_tool_diff
v2.1.27315 Sep 2026return nB() && P("tengu_bridge_child_tool_diff", !0);

Presence across releases

1
BuildsHow manyDatesReading
v2.1.269 – v2.1.31947 builds11 Sep 2026 → 6 Nov 2026 ◆in the build

Build by build

47

One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.

BuildDateStateThe record behind it
v2.1.26911 Sep 2026·addedverdict: added · default bool:false
v2.1.27012 Sep 2026·presentverdict: present · default bool:false
v2.1.27114 Sep 2026·presentverdict: present · default bool:false
v2.1.27214 Sep 2026·presentverdict: present · default bool:false
v2.1.27315 Sep 2026·presentverdict: present · default bool:true
v2.1.27416 Sep 2026·presentverdict: present · default bool:true
v2.1.27517 Sep 2026·presentverdict: present · default bool:true
v2.1.27618 Sep 2026·presentverdict: present · default bool:true
v2.1.27718 Sep 2026·presentverdict: present · default bool:true
v2.1.27819 Sep 2026·presentverdict: present · default bool:true
v2.1.28022 Sep 2026·presentverdict: present · default bool:true
v2.1.28123 Sep 2026·presentverdict: present · default bool:true
v2.1.28224 Sep 2026·presentverdict: present · default bool:true
v2.1.28325 Sep 2026·presentverdict: present · default bool:true
v2.1.28428 Sep 2026·presentverdict: present · default bool:true
v2.1.28529 Sep 2026·presentverdict: present · default bool:true
v2.1.28630 Sep 2026·presentverdict: present · default bool:true
v2.1.2871 Oct 2026·presentverdict: present · default bool:true
v2.1.2882 Oct 2026·presentverdict: present · default bool:true
v2.1.2893 Oct 2026·presentverdict: present · default bool:true
v2.1.2905 Oct 2026·presentverdict: present · default bool:true
v2.1.2916 Oct 2026·presentverdict: present · default bool:true
v2.1.2926 Oct 2026·presentverdict: present · default bool:true
v2.1.2937 Oct 2026·presentverdict: present · default bool:true
v2.1.2948 Oct 2026·presentverdict: present · default bool:true
v2.1.2958 Oct 2026·presentverdict: present · default bool:true
v2.1.2969 Oct 2026·presentverdict: present · default bool:true
v2.1.29914 Oct 2026·presentverdict: present · default bool:true
v2.1.30014 Oct 2026·presentverdict: present · default bool:true
v2.1.30115 Oct 2026·presentverdict: present · default bool:true
v2.1.30216 Oct 2026·presentverdict: present · default bool:true
v2.1.30318 Oct 2026·presentverdict: present · default bool:true
v2.1.30419 Oct 2026·presentverdict: present · default bool:true
v2.1.30520 Oct 2026·presentverdict: present · default bool:true
v2.1.30621 Oct 2026·presentverdict: present · default bool:true
v2.1.30721 Oct 2026·presentverdict: present · default bool:true
v2.1.30822 Oct 2026·presentverdict: present · default bool:true
v2.1.30922 Oct 2026·presentverdict: present · default bool:true
v2.1.31023 Oct 2026·presentverdict: present · default bool:true
v2.1.31126 Oct 2026·presentverdict: present · default bool:true
v2.1.31227 Oct 2026·presentverdict: present · default bool:true
v2.1.31430 Oct 2026·presentverdict: present · default bool:true
v2.1.31530 Oct 2026·presentverdict: present · default bool:true
v2.1.31631 Oct 2026·presentverdict: present · default bool:true
v2.1.3172 Nov 2026·presentverdict: present · default bool:true
v2.1.3183 Nov 2026·presentverdict: present · default bool:true
v2.1.3196 Nov 2026·presentverdict: present · default bool:true

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.

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