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Anthropic/Claude Code

Claude Code

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Releases84Avg26/moVersionsv2.1.66 to v2.1.168
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Cross-session messages lose user authority; fallback models added

↗
v2.1.166

What's changed

  • Added fallbackModel setting to configure up to three fallback models tried in order when the primary model is overloaded or unavailable; --fallback-model now also applies to interactive sessions
  • Added glob pattern support in deny rule tool-name position ("*" denies all tools); allow rules reject non-MCP globs, and unknown tool names in deny rules warn at startup
  • Hardened cross-session messaging: messages relayed via SendMessage from other Claude sessions no longer carry user authority — receivers refuse relayed permission requests, and auto mode blocks them
  • MAX_THINKING_TOKENS=0, --thinking disabled, and the per-model thinking toggle now disable thinking on models that think by default via the Claude API (3P providers unchanged)
  • Claude Code now retries a turn once on the fallback model when the API rejects an unexpected non-retryable error; auth, rate-limit, request-size, and transport errors still surface immediately
  • claude update now announces the target version before downloading instead of going silent
  • claude agents: typing a URL into the list now filters to the session whose first prompt contained it
  • Fixed a recurring "image could not be processed" error and extra token usage when an unprocessable image was sent in a session
  • Fixed remote sessions becoming permanently stuck when a brief backend disruption occurred during worker registration at startup
  • Fixed flickering in JetBrains IDE terminals (IntelliJ, PyCharm, WebStorm, etc.) on 2026.1+ by enabling synchronized output
  • Fixed Shift+non-ASCII characters (e.g. Shift+ä → Ä) being dropped in terminals using the Kitty keyboard protocol (WezTerm, Ghostty, kitty)
  • Fixed PowerShell command validation occasionally hanging far past its time budget on Windows when a killed process's children held its output pipes
  • Fixed orphaned claude --bg-pty-host processes spinning at 100% CPU after the daemon dies while connected on macOS
  • Fixed voice mode requiring /login to clear a stale auth check after toggling /voice
  • Fixed managed settings with an invalid entry silently disabling enforcement of their remaining valid policies
  • Fixed managed-settings allowedMcpServers/deniedMcpServers predicates not matching when they use ${VAR} references
  • Fixed background agent sessions that entered a git worktree crash-looping with "No conversation found" when reopened from claude agents
  • Fixed duplicated thinking text in the Ctrl+O transcript view while streaming
  • Fixed /doctor showing a contradictory failed "Not inside a remote session" check when run inside a remote session
  • Fixed the cursor sticking at the end of the first line when typing a multiline prompt in the claude agents dispatch and reply inputs
  • Fixed blank lines appearing between background agent rows in the task list on terminals without Unicode support

Bash commands fixed on Windows and Bazel; requiredVersion settings added

↗
v2.1.163

What's changed

  • Added requiredMinimumVersion and requiredMaximumVersion managed settings — Claude Code refuses to start if its version is outside the allowed range and directs the user to an approved version
  • Added /plugin list command to list installed plugins, with --enabled/--disabled filters
  • Added a "c to copy" shortcut to /btw that copies the raw markdown answer to the clipboard, preserving formatting when pasted elsewhere
  • Hooks: Stop and SubagentStop hooks can now return hookSpecificOutput.additionalContext to give Claude feedback and keep the turn going without being labeled a hook error
  • Skills: added \$ escape syntax to include a literal $ before a digit in command bodies
  • stdio MCP servers now receive the same CLAUDE_CODE_SESSION_ID as hooks/Bash on --resume
  • Fixed claude -p hanging forever after its final result when a backgrounded command never exits — background shells are now stopped ~5s after the result once stdin closes
  • Fixed claude -p failing with "ANTHROPIC_API_KEY required" on Bedrock/Vertex/Foundry when CI=true and no Anthropic API key is set
  • Fixed bash commands failing under bazel and EDR-protected Go workflows: $TMPDIR was overridden to /tmp/claude-{uid} for all commands instead of only sandboxed ones (regression in 2.1.154)
  • Fixed Bash commands failing on Windows with "EEXIST: file already exists" on the session-env directory when it has the read-only attribute or is inside OneDrive
  • Fixed org-managed permission rules not applying for the entire session when the managed settings fetch completed during startup on a fresh config directory
  • Fixed background sessions in claude agents losing their running background tasks when reattached after a Claude Code update
  • Fixed terminal misalignment and a multi-second hang when exiting the agent view by pressing Esc
  • Fixed clicking Stop on a background-task chip in the desktop app not clearing the chip when the underlying process was already gone
  • Fixed keyboard input becoming permanently unresponsive after a paste operation whose end marker is dropped by the terminal
  • Fixed hook if: "Bash(...)" conditions firing on every Bash command containing $() or $VAR; the pattern now matches against commands inside subshells and backticks too
  • Fixed deny rules on home-directory paths (e.g. Read(~/Desktop/**)) not blocking Bash commands that reference the path via $HOME
  • Fixed a stray "(no content)" line left in the transcript after closing panel dialogs like /mcp and /plugins
  • Background agent sessions now update to a new Claude Code version in the background, so opening a session after an update no longer waits on a cold restart
  • Clearer descriptions for built-in commands and skills in the / menu
  • The subscription-switch suggestion now shows in the startup announcement slot instead of a toast
  • claude agents dispatching from the state-grouped view now starts the session in the directory the agent view was opened from

Permission rules now enforced; MCP sub-1000ms timeouts fixed; startup hangs resolved

↗
v2.1.162

What's changed

  • claude agents --json now includes waitingFor showing what a waiting session is blocked on (e.g. permission prompt)
  • --tools: explicitly listing Grep/Glob now provides the dedicated search tools on native builds with embedded search (previously these names were silently ignored)
  • /effort now confirms when your chosen level will persist as the default for new sessions
  • Clicking a slash command in the autocomplete menu now fills it into your prompt instead of running it immediately; press Enter to run
  • Remote Control now shows as a persistent footer pill (with a link to the session) instead of a startup message
  • Renamed Windsurf to Devin Desktop in the /ide menu, /terminal-setup, and /scroll-speed, following the editor's rebrand
  • Fixed a silent startup hang when the config directory is read-only or unwritable — Claude Code now starts with in-memory config and surfaces startup errors instead of showing a blank screen
  • Fixed WebFetch permission rules not being applied to built-in preapproved domains; explicit WebFetch(domain:...) deny/ask/allow rules now take precedence over the preapproved-host auto-allow
  • Fixed Windows permission rules never matching when spelled with backslashes (~\, \\server\share) or case-variant paths, and Read deny rules not hiding files from Glob/Grep results
  • Fixed an interrupt (Esc) sent at the very start of a turn being silently dropped in stream-json/SDK sessions, leaving the turn running with no "Interrupted" feedback
  • Fixed API 400 no low surrogate in string errors for classifier side-queries and MCP server descriptions containing emoji near a truncation boundary
  • Fixed MCP per-server timeout config values below 1000 ms being floored to a 1-second watchdog that aborted every tool call; sub-1000 ms values are now ignored (falling back to MCP_TOOL_TIMEOUT or default), and claude mcp get annotates them accordingly
  • Fixed the LSP tool's workspaceSymbol operation returning no results; it now accepts a query parameter and passes it to the language server
  • Fixed claude agents cutting live status text (tool args, replies, prompts, exec output) at 60–120 columns on wide terminals; the status detail now uses the full terminal width
  • Fixed claude agents truncating long session names at 40 columns; the name column now grows with terminal width
  • Fixed claude agents attach occasionally bouncing straight back to the session list on the first try after a background-service restart
  • Fixed claude agents Ctrl+V image paste doing nothing in the dispatch input and the session reply box; pasting with no image now shows a hint
  • Fixed backgrounding a session with ← silently losing the conversation when the background service cannot start; the session stays in the list as a failed row you can wake with Enter
  • Fixed replies from the agents view that fail to send being lost; they are now queued for delivery on the next session start
  • Fixed cross-session messaging (SendMessage) silently breaking when CLAUDE_CODE_TMPDIR or $TMPDIR points at a deep directory
  • Fixed opening a running background session from claude agents stalling for 5 seconds before attaching
  • Quieter startup: notices group by severity, and session info and announcements share a single line per launch
  • Startup warnings rewritten to be shorter and clearer, each with a concrete fix
  • Launch-prompt warnings (deep link/pre-filled prompt) now stay pinned below the input until you act instead of scrolling away
  • Failed turns now show a compact warning line instead of a multi-line red error block
  • Improved background service startup and claude update verification to wait out endpoint-security scanning of new binaries instead of failing after 5 seconds
  • Background dispatch spawn failures now report the error class name when no errno is available
  • Removed the "Claude in Chrome enabled" and "marketplace installed" startup messages; model auto-updates and the team-onboarding tip now show as quiet notices under the logo

Managed-settings auth policies now enforced; background sessions use correct model

↗
v2.1.161

What's changed

  • OTEL_RESOURCE_ATTRIBUTES values are now included as labels on metric datapoints, so you can slice usage metrics by custom dimensions like team or repo
  • claude agents rows now show done/total before the detail when work is fanned out; peek shows the longest-running item
  • /mcp now collapses claude.ai connectors you've never signed in to behind a "Show unused connectors" row
  • Parallel tool calls: a failed Bash command no longer cancels other calls in the same batch — each tool returns its own result independently
  • Fullscreen mode: clipboard now uses wl-copy/xclip/xsel on Linux when available, copies to both the clipboard and PRIMARY selection for middle-click paste, and the "hold {key} for native selection" hint now shows the correct key per terminal
  • Fixed the /effort dialog, workflow animations, and prompt keyword shimmer not honoring the "Reduce motion" setting
  • Fixed forceLoginOrgUUID/forceLoginMethod managed-settings policies blocking third-party provider sessions (Bedrock, Vertex, Foundry, Mantle) alongside the org pin (regression in 2.1.146)
  • Fixed background subagent output corrupting claude -p stdout when using --output-format text or json
  • Fixed /usage-credits starting a re-login for Team and Enterprise admins instead of pointing to the organization's usage settings page
  • Fixed /autofix-pr reporting "cannot run on the default branch" when the session is inside a git worktree or another repository
  • Fixed --resume picker not showing sessions from the current directory when it isn't a git worktree (e.g., jj workspaces)
  • Fixed Windows hooks that invoke bash explicitly (e.g., /usr/bin/bash script.sh) failing with "command not found" or "cannot execute binary file"
  • Fixed OpenTelemetry log events (user_prompt, api_request, tool_result, tool_decision) being silently dropped when emitted before telemetry initialization completed
  • Fixed claude mcp list/get/add printing secrets to the terminal: ${VAR} references are no longer expanded, and credential headers and URL secrets are redacted
  • Fixed Workflow agents spawned with isolation: "worktree" in background sessions being blocked from editing files inside their own worktree
  • Fixed background sessions dispatched from claude agents booting on a stale model from the daemon's environment instead of the model in settings.json
  • Fixed a potential crash when rendering Write tool results after resuming a session
  • Fixed completed subagents getting stuck showing as running when an error occurs while finalizing their result
  • Fixed EADDRINUSE errors from tools that bind Unix sockets under $TMPDIR when CLAUDE_CODE_TMPDIR is set to a deep path
  • Improved terminal rendering performance by stabilizing the layout engine's JIT compilation profile
  • Improved rendering performance for large file writes
  • [VSCode] Added a tip suggesting disabling terminal GPU acceleration (or running /terminal-setup) to fix garbled glyphs

Shell startup files now prompt before write; background sessions retain chat history

↗
v2.1.160

What's changed

  • Added a prompt before writing to shell startup files (.zshenv, .zlogin, .bash_login) and ~/.config/git/, which could otherwise lead to unintended command execution
  • acceptEdits mode now prompts before writing build-tool config files that grant code execution (.npmrc, .yarnrc*, bunfig.toml, .bazelrc, .pre-commit-config.yaml, .devcontainer/, etc.)
  • Edit no longer requires a separate Read after viewing a file with grep: single-file grep/egrep/fgrep commands now satisfy the read-before-edit check
  • Fixed copy-on-select not writing to the Windows clipboard on WSL — now uses PowerShell interop instead of OSC 52, which terminals like MobaXterm don't support
  • Fixed restoring a completed session from claude agents dropping chat history and re-running the original prompt
  • Fixed background sessions re-attached after overnight retire losing their conversation and re-running the original prompt
  • Fixed claude --bg occasionally failing with "socket missing" when the background daemon was cold-starting on a loaded machine
  • Fixed an issue on Windows where the directory a background session was started in could not be deleted after claude rm until the background daemon exited
  • Fixed background agents that resumed work being shown under Completed in the agents list
  • Fixed claude agents freezing for several seconds when returning to the session list due to the auto-updater re-checking on every exit
  • Fixed Esc, arrow keys, and typing becoming unresponsive on Windows when attached to a background session or in the agent view while the host is under heavy CPU load
  • Fixed background agents emitting terminal sync-output markers to terminals that don't support them (Apple Terminal, tmux), causing render artifacts when entering a running agent
  • Fixed mouse wheel scrolling prompt history instead of the transcript right after opening a session from the agents list
  • Fixed CJK IME composition appearing at the bottom-left of the screen instead of at the input caret in the claude agents view
  • Fixed valid file:///C:/... links being rewritten to a broken path on Windows terminals with hyperlink support
  • Fixed voice mode failing to connect when the project directory or branch name contains non-ASCII or special characters
  • Fixed the auto mode unavailability message on third-party providers (Bedrock/Vertex/Foundry) to point to the CLAUDE_CODE_ENABLE_AUTO_MODE opt-in instead of incorrectly blaming the model
  • Fixed /effort ultracode incorrectly blaming the dynamic workflows setting when the model cannot run xhigh; ultracode is no longer offered on models that do not support it
  • Fixed model-not-found errors suggesting --model when running via the SDK or other hosts where the CLI flag doesn't apply
  • Fixed Claude's past replies disappearing from scrollback when resuming a brief mode session with brief mode turned off
  • Fixed vim mode p pasting on the line below instead of at the cursor when the register was yanked with v$
  • Improved performance of opening recently-inactive background agent sessions in claude agents
  • Improved auto mode classifier latency by reducing reasoning on routine actions, lowering the chance of "could not evaluate this action" blocks
  • Improved background-session teardown (claude rm/stop, idle reap) to send SIGTERM to running shell subprocesses before SIGKILL, so cleanup handlers run
  • Removed CLAUDE_CODE_OPUS_4_6_FAST_MODE_OVERRIDE; the environment variable is now a no-op
  • Removed the JetBrains plugin install suggestion from startup
  • Renamed the dynamic-workflow trigger keyword from workflow to ultracode. The word "workflow" no longer triggers a run; asking for one in your own words still works. The trigger keyword is highlighted in violet in the prompt input

Plugins auto-load from .claude/skills; worktree orphaning fixed

↗
v2.1.157

What's changed

  • Plugins in .claude/skills directories are now automatically loaded, no marketplace required
  • Added claude plugin init <name> to scaffold a new plugin in .claude/skills
  • Added autocomplete for /plugin arguments: subcommands, installed plugin names, and plugins from known marketplaces
  • claude agents: the agent field in settings.json is now honored for dispatched sessions, with --agent <name> to override it
  • EnterWorktree can now switch between Claude-managed worktrees mid-session
  • tool_decision telemetry events now include tool_parameters (bash commands, MCP/skill names) when OTEL_LOG_TOOL_DETAILS=1
  • Worktrees managed by Claude are now left unlocked when the agent finishes, so git worktree remove/prune can clean them up
  • Fixed unprocessable images (zero-byte, corrupt) attached via paste, MCP, or dialog crashing the request instead of becoming a text placeholder
  • Fixed sandbox network permission prompts appearing in auto and bypass-permissions mode when using the desktop app, IDE extensions, or SDK
  • Fixed claude agents completed sessions not retiring when an idle subagent was still parked or had leaked a backgrounded shell
  • Fixed claude agents pressing Esc not cancelling a slow "opening…", leaving the list unresponsive
  • Fixed background agent worktrees under .claude/worktrees/ being orphaned after the 30-day job retention sweep
  • Fixed background sessions re-attached after a sleep/wake not telling the model the correct date
  • Fixed copy-on-select in claude agents not reaching the system clipboard inside tmux with set-clipboard on (regression in 2.1.153)
  • Fixed --resume not reporting background subagents that were running when the previous Claude Code process exited
  • Fixed the --resume session picker leaving its contents on the terminal after exiting in fullscreen mode
  • Fixed --worktree and --worktree --tmux returning to the canonical repo root instead of the current linked worktree
  • Fixed the /model picker showing an incorrect "Newer version available" hint when the selected model is already the newest in its family; the pinned-model row now shows the model's description instead of its raw ID
  • Fixed literal markdown markers (backticks, asterisks) appearing in the in-progress message text in fullscreen mode
  • Fixed the terminal freezing after approving the managed-settings security dialog at startup
  • Fixed a rare duplicate line appearing in scrollback after the terminal UI redraws
  • Fixed right-click paste duplicating the clipboard in the VS Code, Cursor, and Windsurf integrated terminals
  • WSL: fixed image paste (alt+v keybinding), screenshot paste on Windows 11, and added support for dragging images from Windows Explorer
  • Improved performance of long and resumed conversations by eliminating redundant message-rendering recomputations
  • /terminal-setup now disables GPU acceleration in VS Code/Cursor/Windsurf integrated terminals to prevent garbled-text rendering
  • The Feature of the Week credit-claim status now appears as a notification in the status area instead of a line above the prompt
  • claude agents: slash-command autocomplete in the dispatch input now matches substrings
  • Removed the "bash commands will be sandboxed" startup banner — sandbox status still shows in /status and when a command is blocked
  • Removed the "/ide for …" startup hint toast
  • [IDE] Fixed clicking Stop while a background subagent is running not actually stopping it
  • [VSCode] Fixed the fast mode indicator not appearing on Opus 4.8
  • Pressing backspace right after a workflow trigger keyword now dismisses the workflow request (same as alt+w) instead of deleting a character
  • Added a "Workflow keyword trigger" setting in /config to stop the word "workflow" in a prompt from triggering a dynamic workflow

Dynamic workflows launch; Opus 4.8 defaults to lean system prompt

↗
v2.1.154

What's changed

  • Opus 4.8 is here! Now defaults to high effort · /effort xhigh for your hardest tasks
  • Introducing dynamic workflows: ask Claude to create a workflow and it orchestrates work across tens to hundreds of agents in the background, so you can take on larger, more complex tasks. Run /workflows to view your runs
  • Fast mode on Opus 4.8 is now available at a fraction of its previous cost: 2x the standard rate for 2.5x the speed
  • The lean system prompt is now the default for all models except Haiku, Sonnet, and Opus 4.7 and earlier
  • Claude now reserves the multiple-choice question prompt for decisions it genuinely cannot make itself, instead of asking when it already has enough context to proceed
  • /simplify now runs a cleanup-only review (reuse, simplification, efficiency, altitude) and applies the fixes, instead of running the full /code-review --fix bug-hunting review
  • Renamed the /effort slider labels from "Speed"/"Intelligence" to "Faster"/"Smarter" for clarity
  • claude agents: type ! <command> to run a shell command as a background session you can attach to and detach from. Also available as claude --bg --exec '<command>'
  • claude agents: /logout now signs you out instead of being sent to a background session
  • ←← to open the agents view now works on Bedrock, Vertex, Foundry, and with telemetry disabled
  • Claude in Chrome: pick which connected browser to use via /chrome → "Select browser…", or in-chat when a browser action runs with multiple connected
  • Plugins can now declare defaultEnabled: false in plugin.json or a marketplace entry; enable them with /plugin or claude plugin enable. Dependencies of enabled plugins are still enabled automatically
  • The /plugin Discover tab now pins plugins whose relevance signals match the current directory with a "suggested for this directory" annotation
  • Streaming tool execution is now always enabled, including when telemetry is disabled or on Bedrock/Vertex/Foundry (previously behind a feature flag)
  • Stdio MCP server subprocesses now receive CLAUDE_CODE_SESSION_ID and CLAUDECODE=1 in their environment
  • claude mcp list/get now show unapproved .mcp.json servers as ⏸ Pending approval instead of auto-approving and connecting when output is piped
  • /remote-control autocomplete now shows "Disconnect Remote Control" when Remote Control is already active
  • Added Claude Opus 4.8 support and 4.7 → 4.8 migration guidance to the /claude-api skill
  • Deprecated CLAUDE_CODE_OPUS_4_6_FAST_MODE_OVERRIDE (will be removed on 06/01). To use fast mode on Opus 4.6, switch with /model claude-opus-4-6[1m] and then /fast on
  • Improved the auto-mode classifier's detection of data exfiltration, particularly bulk transfers of repository contents
  • Fixed rm -rf $HOME not being blocked as a dangerous path when HOME has a trailing slash
  • Fixed $TMPDIR resolving to different directories in sandboxed vs unsandboxed Bash commands within the same session
  • Fixed unreadable highlighted-row text in claude agents when the Claude Code theme doesn't match the terminal background
  • Fixed background-agent completion notifications triggering premature "out of context" behavior on some 1M-context models
  • Fixed background-session classifier losing the user's goal when a scheduled /command fires
  • Fixed pinned background sessions respawning every minute after a Claude Code update, causing repeated agent-start notifications and process churn at idle
  • Fixed background sessions stuck at "blocked", "running", or "working" not retiring after the idle grace period
  • Fixed subagents in background sessions bypassing the worktree-isolation guard and writing to the shared checkout
  • Fixed orphaned claude --bg-pty-host processes spinning at 100% CPU after the daemon exits on macOS
  • Fixed number key shortcuts not working for options shown below the divider in option dialogs
  • Fixed worktree.baseRef: "head" resolving to the main checkout's HEAD instead of the current worktree's HEAD when spawning subagents or calling EnterWorktree from inside a linked worktree
  • Fixed a stray leading space on wrapped lines when the previous line ended exactly at the terminal width
  • Fixed intermittent terminal rendering corruption in VS Code by capping the number of distinct colors the thinking spinner produces
  • Fixed plan file names including [Image #N] / [Pasted text #N] placeholders when a plan-mode prompt starts with pasted images or text
  • Fixed a phantom expand/click affordance on colored tool output: short ANSI-colored lines that fit on screen no longer show a "ctrl+o to expand" hint
  • Fixed a single invalid allowedMcpServers/deniedMcpServers entry in managed settings discarding all managed-settings policy; the bad entry is now dropped with a claude doctor warning
  • Fixed API 400 errors on models that don't support the effort parameter when CLAUDE_CODE_ALWAYS_ENABLE_EFFORT is set
  • Windows: Fixed update failures caused by claude.exe being in use showing a generic error instead of telling you to close other sessions and retry
  • Removed the stale "& for background" hint from the shortcuts help panel
  • [VSCode] Auto mode no longer requires the bypass-permissions setting to appear in the mode picker, and a dismissable notice on the new-session screen explains auto mode the first time it's active
  • Fixed the task panel below the prompt showing a stray unselectable "main" row when only a workflow is running
  • Fixed /mcp tools list and tool detail rendering when MCP servers have long or multi-line tool names or long descriptions
  • Fixed the /model picker not showing fast mode pricing on the Default option for API (pay-as-you-go) users when fast mode is on
  • Fixed auto mode incorrectly blocking actions with "could not evaluate this action" when the safety classifier ran out of output tokens while reasoning

MCP servers no longer reconnect-loop; API gateway credential leak fixed

↗
v2.1.153

What's changed

  • Added skipLfs option to github/git plugin marketplace sources to skip Git LFS downloads during clone and update
  • Claude Code now shows a one-time notice when your npm global install can't auto-update; /doctor lists the fixes
  • Status line commands now receive COLUMNS and LINES environment variables so scripts can size output to the terminal width
  • claude agents: autocomplete in the dispatch input now suggests native slash commands and bundled skills, not just project skills
  • claude agents: PR column now shows PR #N for a single PR or N PRs for multiple
  • claude doctor now shows the result of your last update attempt
  • Combined the separate "needs authentication" startup notifications for MCP servers and connectors into a single message
  • macOS: background agents now appear as "Claude Code" in Privacy & Security and keep their permission grants across upgrades
  • Fixed stateful MCP servers without the optional GET SSE stream reconnect-looping on tools/list (regression in v2.1.147)
  • Fixed a regression where a custom API gateway could receive the user's Anthropic OAuth credential instead of the gateway's own token
  • Fixed subagent (Agent tool) frontmatter MCP servers ignoring --strict-mcp-config, --bare, remote mode, enterprise managed MCP config, and managed-settings MCP server allow/deny policies
  • --strict-mcp-config no longer strips inline mcpServers from explicitly-passed agent definitions (--agents / SDK agents), and blocked subagent MCP servers now surface a visible warning
  • Fixed the Windows PowerShell installer reporting "Installation complete!" when installation actually failed
  • Fixed claude update installing the latest version instead of the configured release channel's version for npm installations
  • Fixed excessive memory usage (multiple GB) when resuming a session by transcript file path on machines with many stored sessions
  • Fixed claude agents and claude --bg running on a stale daemon started before binary-takeover support, even after upgrading
  • Fixed a hang where the CLI could fail to exit when stdin was closed without EOF in stream-json mode, leaving a stale session marker behind
  • Fixed malformed file:// links in Claude's responses not being clickable in the terminal
  • Fixed claude --help rendering unwrapped output on terminals narrower than 92 columns
  • Fixed MCP tool progress notifications not rendering in the collapsed tool view
  • Fixed Agent tool with subagent_type: 'claude' running in an undocumented temporary worktree, which could silently discard outputs written to gitignored paths
  • /bg while Claude is responding now continues the response in the background session instead of dropping it
  • Fixed /btw keyboard shortcuts becoming unresponsive in background sessions while a task is running
  • Fixed background sessions writing temp files to $CLAUDE_JOB_DIR triggering a "sensitive file" permission prompt
  • Fixed recovering a background agent whose working directory was deleted showing a truncated stack trace instead of a clear error message
  • Fixed EnterWorktree not being available immediately in background sessions (previously required ToolSearch first)
  • Fixed cmd+k in iTerm2/Terminal.app not repainting attached background sessions
  • Fixed the IME candidate window appearing at the bottom of the screen instead of next to the input caret in attached background sessions on Windows
  • Fixed background-color bleed when attaching to a background agent from 256-color-only terminals after the agent had rendered file diffs
  • Fixed /copy and copy-on-select silently failing to update the system clipboard when attached to a background session inside tmux
  • Fixed opening claude agents with Remote Control enabled leaving zombie session entries on the Code tab after exiting
  • Fixed /rename in background sessions not updating the session banner immediately
  • Fixed Windows update rollback: if a Windows update fails, Claude Code now restores the original executable by copy and tells you how to recover
  • [VSCode] Fixed Claude Code processes not shutting down cleanly when VS Code closed on Windows, causing false "unclean exit" reports and orphaned MCP servers
  • /model now saves your selection as the default for new sessions (matching the IDE). Press s in the picker to switch models for the current session only.
  • If you customized the modelPicker:setAsDefault keybinding, rename it to modelPicker:thisSessionOnly in keybindings.json (the d action was replaced by s)

Code review auto-fix; skills reload mid-session; Vim reverse search

↗
v2.1.152

What's changed

  • /code-review --fix now applies review findings to your working tree after the review, surfacing reuse, simplification, and efficiency suggestions; /simplify now invokes /code-review --fix
  • Skills and slash commands can now set disallowed-tools in frontmatter to remove tools from the model while the skill is active
  • Added /reload-skills command to re-scan skill directories without restarting the session
  • SessionStart hooks can now return reloadSkills: true to re-scan skill directories, making skills installed by the hook available in the same session
  • SessionStart hooks can now set the session title via hookSpecificOutput.sessionTitle on startup and resume
  • Added a MessageDisplay hook event that lets hooks transform or hide assistant message text as it is displayed
  • Added pluginSuggestionMarketplaces managed setting: admins can allowlist org marketplaces whose plugins may be suggested via context-aware tips
  • claude plugin marketplace remove now accepts --scope user|project|local for symmetry with marketplace add, install, and uninstall
  • Claude Code now switches to your configured --fallback-model for the rest of the session when the primary model is not found, instead of failing every request
  • Auto mode no longer requires opt-in consent
  • Vim mode: / in NORMAL mode now opens reverse history search (like Ctrl+R), matching bash/zsh vi-mode
  • The /usage breakdown now includes large session files; files are scanned with a streaming read so memory usage stays flat
  • Thinking summaries in the collapsed group now stay readable for at least 3 seconds, render as markdown, and cap at 10 lines (Ctrl+O shows the full thinking)
  • In fullscreen mode, the "Thinking for Ns" indicator now counts up live while the model is thinking, and keeps its value if you interrupt mid-thought
  • Simplified the Workflow tool's inline progress display — live agent counts now show only in the persistent workflow status row below the prompt
  • The post-response timer now shows "Waiting for N background agents/workflows to finish" when backgrounded agents or workflows are still running, and reports the cumulative time once their results are processed
  • Added the session entrypoint as an OpenTelemetry metric attribute (app.entrypoint, opt-in via OTEL_METRICS_INCLUDE_ENTRYPOINT=true)
  • Fixed terminal styling degrading in very long sessions by recycling the renderer's style pool
  • Fixed the sandbox-enabled warning not appearing in condensed startup mode — it now shows in every layout
  • Fixed the loading spinner showing "still thinking"/"almost done thinking" while a tool is running, and reset the thinking status to "thinking" after each tool
  • Fixed focus mode showing a spurious "N messages hidden" count on turns with no hidden activity
  • Fixed clicking a link inside an expanded tool result collapsing the section instead of opening the link
  • Fixed markdown table cell borders inheriting the color of inline code, wrapped continuation lines losing their style, and empty header cells showing a label in the narrow-terminal stacked layout
  • Fixed plugin MCP servers with the same command but different environment variables being incorrectly deduplicated
  • Fixed /doctor reporting "marketplace not found" or "plugin not found" for stale enabledPlugins entries referencing removed marketplaces or dropped plugins
  • Fixed plugins that track a git branch silently no longer receiving updates after the plugin registry was rebuilt
  • Fixed remote MCP servers failing to connect in Claude Code Remote sessions when the egress proxy is enabled
  • Fixed the effort-change confirmation dialog appearing when the conversation has no messages or when switching between effort levels that resolve to the same underlying value
  • Fixed the Agent tool description referencing an agent list that is never delivered when running with --bare or with attachments disabled
  • Fixed a background worker crash in claude agents when accepting a stale permission prompt after a subagent was cancelled
  • Fixed cache_creation_input_tokens reporting as 0 in transcript and result usage when the API reports cache writes only via the nested cache_creation breakdown
  • Fixed the PushNotification tool incorrectly reporting "Mobile push not sent (Remote Control inactive)" in SDK-hosted sessions when Remote Control is enabled
  • Fixed sessions getting stuck after a model or login switch left stale thinking-block signatures in history; now stripped proactively with a retry safety-net

PowerShell permission bypass closed; sandbox allowlist scoped

↗
v2.1.149

What's changed

  • /usage now shows a per-category breakdown of what's driving your limits usage — skills, subagents, plugins, and per-MCP-server cost
  • /diff detail view can now be scrolled with the keyboard (arrows, j/k, PgUp/PgDn, Space, Home/End)
  • Markdown output now renders GFM task list checkboxes (- [ ] todo / - [x] done) instead of plain bullets
  • Enterprise: added the allowAllClaudeAiMcps managed setting to load claude.ai cloud MCP connectors alongside managed-mcp.json
  • Fixed a PowerShell permission bypass: built-in cd functions (cd.., cd\, cd~, X:) changed the working directory undetected, letting a later command read outside the workspace
  • Fixed the sandbox write allowlist in git worktrees covering the entire main repository root instead of only the shared .git directory (with hooks/ and config denied)
  • Fixed PowerShell prefix/wildcard allow rules (e.g. PowerShell(dotnet.exe build *)) not pre-approving native executables and scripts
  • Fixed a permission-analysis gap where the parser trusted stale variable-tracking values for PWD/OLDPWD/DIRSTACK across cd/pushd/popd
  • Fixed find in the Bash tool exhausting the macOS system file/vnode table and crashing the host on large directory trees
  • Fixed the managed-settings approval dialog leaving the terminal frozen after accepting at startup
  • Fixed /ultraplan and remote session creation failing with "Could not capture uncommitted changes" when the working tree has no real changes
  • Fixed otelHeadersHelper failing silently when the script path contains spaces; helper failures are now reported in /doctor and the debug log
  • Fixed the thinking spinner staying amber across tool calls and onto fresh thinking bursts
  • Fixed collapsed Bash output reporting the wrong hidden-line count for outputs with many short lines
  • Fixed slash-command argument-hint clipping trailing typed characters when the hint overflows the input box
  • Fixed argument-hint and progressive arg suggestions not appearing after Tab-completing a skill whose frontmatter name: differs from its directory basename
  • Fixed the status bar showing the user's baseline /effort setting instead of the effort level applied by skill/agent effort: frontmatter
  • Fixed Ctrl+O transcript view freezing at the moment it was opened instead of tailing new messages
  • Fixed editing a recalled prompt-history entry losing the edit when navigating further up/down with arrow keys
  • Fixed /config exit summary reporting phantom changes to auto-compact and theme when toggling unrelated settings
  • Fixed /insights crashing when cached session-meta files are missing optional fields
  • Fixed malformed PowerShell and History tool calls with missing input being misclassified as reads in transcript collapsing
  • Fixed renaming a Remote Control session from claude.ai or the Claude mobile app not updating the local session name for claude --resume
  • Fixed a race where a just-submitted prompt could appear twice in the up-arrow history
  • Fixed tapping the "Jump to bottom" pill in fullscreen mode not dismissing it immediately
  • Improved /feedback reports to include the conversation that happened before context compaction, making issues from earlier in long sessions easier to triage

Workflow tool for multi-agent orchestration; sandbox escapes hardened

↗
v2.1.147

What's changed

  • Added the Workflow tool for deterministic multi-agent orchestration. It is off by default — set CLAUDE_CODE_WORKFLOWS=1 to enable
  • Pinned background sessions (Ctrl+T in claude agents) now stay alive when idle, are restarted in place to apply Claude Code updates, and are shed under memory pressure only after non-pinned sessions
  • Renamed /simplify to /code-review. It now reports correctness bugs at a chosen effort level (e.g., /code-review high); pass --comment to post findings as inline GitHub PR comments. The old cleanup-and-fix behavior has been removed
  • Hardened REPL and Workflow tool sandboxes against prototype-pollution and thenable-based escapes
  • Improved auto-updater: retries transient network failures, reports specific error categories and OS error codes on failure, and shows the current version when an update fails
  • Improved diff rendering performance for large file edits
  • Prompt history no longer records consecutive duplicate entries — recalling a prompt with arrow-up and submitting it again won't add another copy
  • Fixed enterprise login restrictions (forceLoginOrgUUID and forceLoginMethod managed-settings) not being enforced against third-party-provider and API-key sessions
  • Fixed & in ! command output displaying as &amp;, which broke copy-pasting URLs from commands like gcloud auth login on headless machines
  • Fixed unknown slash commands silently doing nothing in headless/SDK mode — they now show an error message
  • Fixed /help rendering a broken tab header and showing only one command per page on small terminals when not in fullscreen mode
  • Fixed shell snapshot dropping user functions whose names start with a single underscore, which broke aliases referencing them
  • Fixed plugin agents that declare multiple Agent(...) types in tools: frontmatter dropping all but the last entry
  • Fixed hook if conditions like PowerShell(git push*) never matching — only PowerShell(*) worked
  • Fixed PowerShell tool dropping output for commands that rely on the default formatter
  • Fixed: on Windows, "Yes, and don't ask again" for a PowerShell script invocation now writes a rule that actually matches on subsequent runs
  • Fixed PowerShell tool failing on Windows with exit code 1 when pwsh is installed via winget or the Microsoft Store
  • Fixed /effort opening with the slider on the wrong level — it now starts at your current effort
  • Fixed paginating MCP servers dropping resources, templates, and prompts past page 1
  • Fixed full-screen strobing in attached background sessions on Windows Terminal while Claude is streaming
  • Fixed: on Windows, removing a background-job worktree no longer follows NTFS junctions into the main repo
  • Fixed /background refusing sessions whose only typed input was a skill or custom slash command
  • Fixed auto mode suppressing AskUserQuestion when the user or a skill explicitly relies on it; the auto-mode classifier now sees the user's answers as intent signal
  • Fixed /theme "New custom theme" and color editor dialogs not responding to Esc
  • Fixed an uncaught exception at the end of streaming sessions when running via the Agent SDK
  • Fixed a rare hang when waiting for scroll to settle on Windows
  • Fixed stale and doubled rows in the agent view list on Windows when background session results contain wide (CJK) characters
  • Fixed pasted text being delivered to agents as an unreadable [Pasted text #N] placeholder instead of the actual content
  • Fixed plugin component counts in claude plugin details and /plugin being doubled when a plugin's manifest listed paths overlapping its default directories
  • Fixed backgrounded sessions re-prompting for tool permissions you already granted with "don't ask again"
  • Fixed GNOME Terminal right-click and middle-click paste not inserting text
  • Fixed CLAUDE_CODE_SUBAGENT_MODEL not applying to teammate processes spawned by agent teams
  • Fixed slash commands followed by a tab or newline being treated as an unknown command
  • Fixed several spacing and layout glitches in the /plugin, /status, /mobile, /sandbox, and /permissions menus
  • Fixed stripped images prompting the model to repeatedly re-read media that was no longer present

PowerShell tool works with winget/Store; MCP pagination fixed

↗
v2.1.146

What's changed

  • Renamed /simplify to /code-review with an optional effort level (e.g. /code-review high)
  • Auto mode no longer suppresses AskUserQuestion when the user or a skill explicitly relies on it
  • Fixed Windows PowerShell tool failing with "command line is invalid" when pwsh is installed via winget or the Microsoft Store (regression in v2.1.124)
  • Fixed MCP resources/list, resources/templates/list, and prompts/list dropping items past page 1 on paginating servers
  • Fixed full-screen strobing in attached background sessions on Windows Terminal while Claude is streaming
  • Fixed the auto-updater status line not showing your current version when an update fails
  • Fixed on Windows, removing a background-job worktree no longer follows NTFS junctions into the main repo
  • Fixed /background refusing sessions whose only typed input was a skill or custom slash command
  • Fixed backgrounded sessions re-prompting for tool permissions you already granted with "don't ask again"
  • Fixed /theme color editor and "New custom theme" dialogs not responding to Esc
  • Fixed an uncaught exception at the end of streaming sessions when running via the Agent SDK
  • Fixed forceLoginOrgUUID and forceLoginMethod managed-settings policies not being enforced against third-party-provider and API-key sessions
  • Fixed GNOME Terminal right-click and middle-click paste not inserting text
  • Fixed CLAUDE_CODE_SUBAGENT_MODEL not being forwarded to child processes in multi-agent sessions
  • Improved auto-updater reliability: native version checks and downloads now retry transient network failures instead of failing immediately
  • Improved diff rendering performance for large file edits
Last Checked
2h ago
Tracking since Jun 30, 2025
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