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 v2.1.219 Home All releases olderv2.1.218 v2.1.220newer
Claude Code v2.1.219

Memory truncation warning now covers ordinary memory files

Not switched on
Useful1 Signal1
Memory

Oversize memory warnings would finally say something sensible about ordinary files, not just index entries.

The reworded truncation warning is part of the memory feature gated on tengu_stone_shell, fallback false.

Feature flag
tengu_stone_shell 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 v2.1.219: on

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 v2.1.219. It isn't a statement about your account. What a flag value here can and cannot tell you

What

The oversize warning always spoke about index entries regardless of what was truncated; it now branches on file type.

Details
  • For non-index files it tells Claude to "Keep each memory file focused on one topic"
  • Adds "its lines are too long" as a stated reason for truncation
  • Gated on tengu_stone_shell, fallback false
Evidence

this memory file is

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

See this entry in the whole of v2.1.219 →