TL;DR

• Todo/task-tracking tools silently removed on newer models. TaskCreate, TaskGet, TaskUpdate, TaskList, and TodoWrite no longer load on Opus 4.8, Sonnet 5, Fable 5, Mythos 5, and newer; set CLAUDE_CODE_ENABLE_TODO_TOOLS=1 to restore them. (more below)

• Notification hooks now fire for permission prompts in Desktop and VS Code. If your workflow relies on hooks that respond to permission events, they were silently broken in those hosts until this fix.

• Runaway builds can no longer stall your session on Linux. Set CLAUDE_CODE_TOOL_MEMORY_LIMIT to cap memory for Bash tool commands via cgroup; opt-in, default unchanged.

• 2.1.232's Bash permission tightening for Cygwin symlinks and input redirections is reverted. A narrower version will return in a later release; if you added workarounds for the original change, you can drop them. (more below)

New in 2.1.233

2.1.233 (August 15, 2026)

• Added GitLab merge request URL support to the --worktree flag and the claude agents view (where MRs display as !N)
• Added an opt-in forward_user_identity apps gateway setting on Anthropic upstreams that sends the signed-in user's identity as headers, so a proxy behind the gateway can attribute spend per user
• Added opt-in memory cgroup support for Bash tool commands on Linux (CLAUDE_CODE_TOOL_MEMORY_LIMIT) so a runaway build can't stall the session
• Added CLAUDE_CODE_WEBFETCH_CACHE_TTL_MS environment variable to configure the WebFetch session URL cache TTL (default unchanged: 15 minutes)
• Fixed cloud sessions occasionally being marked as lost when the environment shut down while Claude was waiting on a permission prompt
• Fixed MCP v2 connections endlessly reopening the subscriptions/listen stream against servers that terminate long-held streams on a fixed timeout (e.g. serverless hosts)
• Fixed Notification hooks not firing for permission prompts when running under Claude Desktop or VS Code
• Fixed idle sessions on Linux sometimes keeping one CPU core at 100% when sandboxing is enabled
• Fixed bundled skill aliases like /checkup and /review reporting "Unknown command" in -p mode or with plugins/MCP loaded when a user or project skill shadows the bundled skill
• Fixed skill/command argument substitution to prevent argument values from being re-expanded as template markers
• Fixed Windows paths spelled with the NT \\??\\ device prefix bypassing UNC path validation, closing an NTLM credential-leak vector
• Improved claude self-hosted-runner session start time: the session branch is now created without rewriting the working tree, and two server round trips no longer block the agent's launch
• Improved apps gateway error forwarding: 400/413 errors from Vertex, Foundry, and Claude Platform on AWS upstreams now carry the upstream's own message; fixes a bug with auto-compact on apps gateway
• Improved claude plugin validate to check a bare .claude/skills directory, reporting SKILL.md files whose frontmatter fails to parse
• Improved screen reader mode: the /effort selector renders as a numbered list with a typed-number prompt, and hint and dialog text is no longer clipped
• Improved print mode diagnostics: a [claude-code:unrecognized_model] line is written to stderr when a request goes out for a model ID Claude Code doesn't recognize; map it with modelOverrides to silence
• Changed the GitHub app setup tip to no longer appear in repositories whose origin remote is on gitlab.com or bitbucket.org; the enterprise marketplace tip now covers non-GitHub internal git hosts
• Todo/task-tracking tools (TaskCreate/Get/Update/List, TodoWrite) are no longer available on Opus 4.8, Sonnet 5, Fable 5, Mythos 5, and newer models; set CLAUDE_CODE_ENABLE_TODO_TOOLS=1 to bring them back
• Windows: fixed auto mode repeatedly stopping for manual approval on ordinary cd <dir> && <command> > file Bash commands (a 2.1.232 regression)
• Reverted the 2.1.232 Bash permission changes for Cygwin-style symlinks on Windows and for input redirections (< file); a narrower version will return in a later release

Notes