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 v2.1.246 Home All releases olderv2.1.245 v2.1.247newer
Claude Code v2.1.246

New flag can widen when the extended usage-limit header is sent

Not switched on
Useful2 Signal0
Elsewhere

A server flag can widen when subagent requests send the extended usage-limit header.

The extended usage header can now be sent without a cached reason when tengu_smooth_harbor is on server-side.

Feature flag
tengu_smooth_harbor 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 v2.1.246: on

tengu_lantern_spool Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.246: on

Read once, for one account on one subscription tier, against v2.1.246. It isn't a statement about your account. What a flag value here can and cannot tell you

What

The rule deciding whether nested and subagent queries send the extended usage-limit header was pulled into one helper. It previously required a cached reason that extra usage is disabled; now, when there is no such reason, the header can still be sent if tengu_smooth_harbor is on.

Details
  • tengu_smooth_harbor falls back to off, and is still combined with tengu_lantern_spool, which also falls back to off.
  • Nothing in the build turns either on, so absent remote config the behaviour is exactly what it was.
Evidence

tengu_smooth_harbor

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

See this entry in the whole of v2.1.246 →