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Friday 8 May — v2.1.133
17 changes / 4 actionable / 1 deep dive
Claude Code
  • worktree.baseRef flips the default back to origin/<default>. If you relied on 2.1.128's switch to local HEAD for worktrees, set worktree.baseRef: "head" to keep unpushed commits in new worktrees. (more below)
  • Hooks now receive the active effort level. $CLAUDE_EFFORT is available in Bash commands and hook JSON input (effort.level), so effort-aware workflows no longer require parsing settings.
  • /effort no longer bleeds across concurrent sessions. If you run parallel sessions, changing effort in one was silently changing the others.
  • Subagents can now discover project, user, and plugin skills. If your subagents were failing to find skills via the Skill tool, this was the bug.

New in 2.1.133

2.1.133 (May 8, 2026)

  • Added worktree.baseRef setting (fresh | head) to choose whether --worktree, EnterWorktree, and agent-isolation worktrees branch from origin/<default> or local HEAD. Default fresh changes EnterWorktree's base back to origin/<default> (it has been local HEAD since 2.1.128)
  • Added sandbox.bwrapPath and sandbox.socatPath managed settings (Linux/WSL) to specify custom bubblewrap and socat binary locations
  • Added parentSettingsBehavior admin-tier key ('first-wins' | 'merge') to let admins opt SDK managedSettings (parent tier) into the policy merge
  • Hooks now receive the active effort level via the effort.level JSON input field and the $CLAUDE_EFFORT environment variable, and Bash tool commands can read $CLAUDE_EFFORT
  • Improved focus mode behavior
  • Improved memory usage by releasing warm-spare background workers under memory pressure
  • Fixed parallel sessions all dead-ending at 401 after a refresh-token race wiped shared credentials
  • Fixed Edit/Write allow rules scoped to a drive root (C:\) or POSIX / matching incorrectly and always prompting
  • Fixed an unhandled rejection (ECOMPROMISED) when a history or session-log file lock is compromised by clock skew or slow disk
  • Fixed pressing Esc during conversation compaction showing a spurious "Error compacting conversation" notification
  • Fixed HTTP(S)_PROXY / NO_PROXY / mTLS not being respected for the full MCP OAuth flow including discovery, dynamic client registration, token exchange, and token refresh
  • Fixed Read/Write/Edit being denied on mapped network drives passed via --add-dir / SDK additionalDirectories
  • Fixed Remote Control stop/interrupt from claude.ai not fully canceling the CLI session the same way local Esc does, causing queued messages to never advance after interrupting a stuck tool or prompt
  • Fixed /effort in one session unexpectedly changing the effort level of other concurrent sessions, and a related issue where an IDE effort change could be silently dropped
  • Fixed subagents not discovering project, user, or plugin skills via the Skill tool
  • claude --help now lists --remote-control alongside --remote-control-session-name-prefix
  • [VSCode] Fixed claudeCode.claudeProcessWrapper failing with "Unsupported platform" when the extension build doesn't bundle a Claude binary

Notes

worktree.baseRef reverses 2.1.128's worktree base change. In 2.1.128, EnterWorktree was changed to branch from local HEAD instead of origin/<default>, so unpushed commits traveled into new worktrees. 2.1.133 introduces the worktree.baseRef setting and defaults it to fresh, which restores the original origin/<default> behavior. The setting gives you explicit control, but the default flip means anyone who started depending on the 2.1.128 behavior will silently lose unpushed commits in new worktrees unless they opt in with worktree.baseRef: "head".