Source Intelligence

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.

All of v2.1.251 Home All releases olderv2.1.250
Claude Code v2.1.251

Subagent bridge forwards frames but not raw text

Not switched on
Useful1 Signal3
Agents

A subagent bridge forwards frames by default but raw text forwarding is off.

Raw-text forwarding over the subagent bridge is a separate switch, off in this build.

Feature flag
tengu_bridge_subagent_frames Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.251: off

Read once, for one account on one subscription tier, against v2.1.251. It isn't a statement about your account. What a flag value here can and cannot tell you

What

A new helper decides what a subagent bridge passes along. Forwarding of frames is on by default; forwarding of raw text is a separate switch that is off in this build.

Details
  • The two settings are independent, so text forwarding stays off even with frames enabled.
Evidence

tengu_bridge_subagent_frames

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.251 →