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 v2.1.227 Home All releases olderv2.1.226 v2.1.228newer
Claude Code v2.1.227

Wrap-up nudge during the rate-limit grace window

Not switched on
Useful3 Signal3
Rate Limits

Claude could be nudged to wrap up or checkpoint during your usage-limit grace window, but nothing fires.

A grace-window wrap-up nudge has off, wrap-up and next-steps modes, resolving to off with no server value.

Feature flag
tengu_lantern_wick_mode 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 v2.1.227: not a boolean we can read

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.227. It isn't a statement about your account. What a flag value here can and cannot tell you

What

When you are inside the usage-limit grace window, Claude Code can insert a hidden message asking the model either to wrap up, or to checkpoint and list up to three remaining pieces of work. The behaviour comes from tengu_lantern_wick_mode, which resolves to off, wrap-up or next-steps; with no remote value it is off, so nothing is injected in this build.

Evidence

tengu_lantern_wick_mode

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 v2.1.227 →