Source Intelligence
Reading a new release v2.1.251 Analysing changes · 2/5 Deeper second pass · 4/5 agents 427 findings $12.75 so far

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 v2.1.90 Home All releases olderv2.1.89 v2.1.91newer
Claude Code v2.1.90

Linux Sandbox Improvements

  • Mount point cleanup is now deferred when multiple sandboxes are still active, using a reference counter to avoid premature cleanup (search for "Deferring mount point cleanup").
  • Added --unshare-user flag in certain sandbox configurations for tighter process isolation.
  • Write paths that get wiped by a denyRead tmpfs mount are now automatically re-bound (search for "Re-bound write path wiped by denyRead tmpfs").
  • Deny path deduplication prevents redundant sandbox mount operations.
Evidence

Sandbox refcount (search for "sandbox(es) still active") and re-bind logic (search for "Re-bound write path wiped by denyRead tmpfs")

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

See this entry in the whole of v2.1.90 →