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 v2.1.236 Home All releases olderv2.1.235 v2.1.237newer
Claude Code v2.1.236

A new remote flag, on by default, controls message-input split repair

Under the hood
Useful2 Signal3
Multi-Session Notable

A new remote flag, on by default, reassembles split message-tool inputs when they are read back.

Feature flag
tengu_deep_feather 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 v2.1.236: off

Read once, for one account on one subscription tier, against v2.1.236. It isn't a statement about your account. What a flag value here can and cannot tell you

What

tengu_deep_feather is new and its fallback is true, so absent a server value it is on for everyone. It governs whether split message-tool inputs are reassembled, both when the tool reads its own input and when a prior tool call is re-read to recover its original message and idle-subscription values.

Details
  • Effectively a kill switch: if remote config turns it off, previously split inputs stop being reassembled on the round trip.
  • Notable as the only new flag here that defaults on rather than off.
Evidence

tengu_deep_feather

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 v2.1.236 →