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 v2.1.235 Home All releases olderv2.1.234 v2.1.236newer
Claude Code v2.1.235

Measurement-only check for hardlinked files in read permissions

Under the hood
Useful1 Signal3
Permissions

Claude Code now quietly notes when a file you read has more than one name, without changing what's allowed.

Feature flag
tengu_playful_lobster 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 v2.1.235: off

Read once, for one account on one subscription tier, against v2.1.235. It isn't a statement about your account. What a flag value here can and cannot tell you

What

When a file read is auto-allowed, Claude Code now quietly checks whether the target is a hardlink (more than one name pointing at the same file) and reports it. The permission decision is unchanged either way. The flag tengu_playful_lobster gates the reporting and falls back to on, so the measurement runs for everyone while no enforcement exists yet.

Details
  • The check stats the resolved path lazily and tests for a regular file with a link count above one.
  • It fires tengu_playful_lobster_fired with step (editImpliesRead or workingDir), the permission mode, and a hardcoded mode: shadow.
  • Firing is deduped per mode and path, with a cap.
Evidence

tengu_playful_lobster_fired

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

See this entry in the whole of v2.1.235 →