Code Guide

Claude Code Releases

Version history, changelog, and breaking changes

← Back to Guide
🔥 New Feature — Research Preview

Remote Control v2.1.51

Control your local Claude Code session from any phone, tablet, or browser — execution stays 100% on your machine. No ports to open, no SSH tunnels. Just scan a QR code and code from your couch.

Pro & Max only HTTPS outbound only ~10 min timeout
/rc or claude remote-control → scan QR → control from mobile
⚠️ Known: slash commands (/new, /compact) don't work in the remote UI — use them from your local terminal.
Full Guide (§9.22) → Security Notes

What's New

Latest updates from the changelog

Loading changelog...
View Full Changelog →

Claude Code Releases

Latest versions and breaking changes from Anthropic

Showing 23 of 76 releases

⭐ /loop + Cron scheduling
v2.1.71 Mar 6, 2026
  • ⭐ /loop command — run a prompt or slash command on a recurring interval (e.g. /loop 5m check the deploy)
  • ⭐ Cron scheduling tools for recurring prompts within a session
  • voice:pushToTalk keybinding now rebindable in keybindings.json (default: space)
  • Fixed stdin freeze in long sessions; 5–8s startup freeze with voice mode; forked sessions sharing plan files
  • Improved plugin MCP server deduplication; /plugin uninstall now writes to settings.local.json
⭐ VSCode session list + MCP dialog
v2.1.70 Mar 6, 2026
  • ⭐ VSCode: spark icon listing all sessions in activity bar, plan markdown view, native /mcp management dialog
  • Fixed API 400 errors with third-party gateways (ANTHROPIC_BASE_URL) and Bedrock custom inference profiles
  • Fixed empty responses after ToolSearch + prompt-cache bust when MCP server with instructions connects
  • Fixed voice on Windows native binary; clipboard CJK/emoji corruption on Windows/WSL
  • Reduced prompt input re-renders by ~74%; startup memory −426KB; Remote Control poll rate 300× lower
🔒 4 Security Fixes + Hooks
v2.1.69 Mar 4, 2026
  • 🔒 4 security fixes: nested skills from node_modules, symlink bypass outside workdir, trust dialog silently enabling servers, sandbox not blocking domains
  • ⭐ InstructionsLoaded hook event fires when CLAUDE.md/.rules files load + agent_id, agent_type, worktree added to all hook events
  • ${CLAUDE_SKILL_DIR} variable for skills + /reload-plugins command (no restart needed)
  • Voice STT expanded to 20 languages (+10: Russian, Polish, Turkish, Dutch, Ukrainian, Greek, Czech, Danish, Swedish, Norwegian)
  • 15+ memory leak fixes; ~16MB baseline reduction; faster startup; MCP binary content (PDFs/audio) now saved to disk
  • Sonnet 4.5 users on Pro/Max/Team auto-migrated to Sonnet 4.6
v2.1.68 Mar 4, 2026
  • Opus 4.6 now defaults to medium effort for Max and Team subscribers
  • Re-introduced ultrathink keyword to enable high effort for the next turn
  • Breaking: Opus 4 and Opus 4.1 removed from Claude Code first-party API — auto-migrated to Opus 4.6
⚠️ Breaking:
  • Opus 4 and Opus 4.1 removed from Claude Code first-party API
v2.1.66 Mar 4, 2026
  • Reduced spurious error logging
⭐ HTTP hooks
v2.1.63 Feb 27, 2026
  • ⭐ HTTP hooks — hooks can now POST JSON to a URL and receive JSON back, instead of running a shell command
  • ⭐ Project configs & auto-memory now shared across all git worktrees of the same repository
  • /simplify and /batch bundled slash commands added
  • ENABLE_CLAUDEAI_MCP_SERVERS=false env var to opt out of claude.ai MCP servers
  • /model command shows currently active model in the picker
  • Major memory leak fixes: WebSocket, MCP caches, git root detection, JSON parsing, bash prefix, subagent state
v2.1.62 Feb 27, 2026
  • Fixed prompt suggestion cache regression that reduced cache hit rates
v2.1.61 Feb 27, 2026
  • Fixed concurrent writes corrupting config file on Windows
⭐ Auto-memory
v2.1.59 Feb 26, 2026
  • 🧠 Auto-memory — Claude automatically saves useful context to memory. Manage with /memory
  • /copy command — interactive picker to select individual code blocks or full response
  • Smarter "always allow" prefix suggestions for compound bash commands (per-subcommand prefixes)
  • Fixed MCP OAuth token refresh race condition with multiple simultaneous Claude Code instances
  • Fixed config file corruption wiping authentication when multiple instances ran simultaneously
v2.1.58 Feb 26, 2026
  • Remote Control expanded to more users
v2.1.56 Feb 25, 2026
  • VSCode: Fixed another cause of extension crash on Windows
v2.1.55 Feb 25, 2026
  • Fixed BashTool failing on Windows with EINVAL error
v2.1.53 Feb 25, 2026
  • Stability fixes: Windows panics/crashes, WebAssembly crashes on Linux x64 & Windows x64/ARM64
  • Fixed graceful shutdown leaving stale sessions with Remote Control
  • Fixed --worktree flag sometimes ignored on first launch
v2.1.52 Feb 24, 2026
  • VSCode: Fixed extension crash on Windows
🔥 Major Feature
v2.1.51 Feb 24, 2026
  • 📱 Remote Control — control your local Claude Code session from any phone, tablet, or browser via /rc or claude remote-control. Execution stays 100% local. Pro/Max only (Research Preview)
  • BashTool skips login shell by default when snapshot available — performance improvement
  • CLAUDE_CODE_ACCOUNT_UUID / CLAUDE_CODE_USER_EMAIL env vars for SDK account metadata
  • /model picker shows human-readable labels; custom npm registries for plugins
v2.1.49 Feb 20, 2026
  • --worktree / -w flag + subagent isolation: "worktree" for isolated git worktrees
  • Agent definitions support background: true to always run as background task
  • ConfigChange hook event for enterprise security auditing of config changes
  • Simple mode includes file edit tool; Sonnet 4.6 now has 1M context on Max plan
v2.1.47 Feb 19, 2026
  • VS Code plan preview auto-updates as Claude iterates
  • ctrl+f kills all background agents; ESC cancels main thread only
  • last_assistant_message field in Stop/SubagentStop hook inputs
  • 70+ bug fixes: PDF compaction, Unicode quotes, parallel file edits, OSC 8 hyperlinks
v2.1.46 Feb 19, 2026
  • Fixed orphaned Claude Code processes after terminal disconnect on macOS
  • Support for using claude.ai MCP connectors in Claude Code
v2.1.45 Feb 17, 2026
  • Claude Sonnet 4.6 model support
  • spinnerTipsOverride setting for customizable spinner tips
  • SDK: SDKRateLimitInfo / SDKRateLimitEvent for rate limit tracking
  • Fixed Agent Teams on Bedrock/Vertex/Foundry; memory improvements
v2.1.44 Feb 17, 2026
  • Fixed auth refresh errors
  • Fixed AWS auth refresh hanging (3-minute timeout)
  • Fixed structured-outputs beta header on Vertex/Bedrock
v2.1.42 Feb 14, 2026
  • Startup performance: deferred Zod schema construction
  • Improved prompt cache hit rates (date moved out of system prompt)
  • Opus 4.6 effort callout for eligible users
v2.1.41 Feb 13, 2026
  • claude auth login/status/logout CLI subcommands
  • Windows ARM64 native binary support
  • /rename auto-generates session name from context
  • Multiple stability fixes (FIFOs, background tasks, permissions)
v2.1.39 Feb 11, 2026
  • Guard against recursive Claude Code launches
  • Fixed Agent Teams model for Bedrock/Vertex/Foundry
  • OTel speed attribute for fast mode
  • Stability fixes (rendering, session close, fatal errors)
v2.1.38 Feb 10, 2026
  • Fixed Tab key queueing slash commands
  • Security: Heredoc delimiter command smuggling fix
  • Security: Blocked writes to .claude/skills in sandbox
v2.1.37 Feb 8, 2026
  • Fixed /fast not available after enabling /extra-usage
v2.1.36 Feb 8, 2026
  • ⭐ Fast mode now available for Opus 4.6
v2.1.34 Feb 7, 2026
  • Fixed crash with agent teams setting changes
  • Security fix: sandbox-excluded commands bypass
v2.1.33 Feb 6, 2026
  • Agent teams fixes (tmux sessions, availability warnings)
  • TeammateIdle and TaskCompleted hook events
  • Agent frontmatter: memory field, Task(agent_type) syntax
  • VSCode: Remote sessions, branch/message count in picker
v2.1.32 Feb 5, 2026
  • ⭐ Opus 4.6 available
  • Agent teams preview (experimental)
  • Automatic memory recording
v2.1.30 Feb 2, 2026
  • ⭐ PDF page range support (pages: "1-5")
  • ⭐ Pre-configured OAuth for MCP servers (Slack)
  • ⭐ New /debug command for troubleshooting
  • Task tool metrics (tokens, duration, tool uses)
v2.1.29 Jan 31, 2026
  • Fixed startup performance with saved hook context
  • Improved session recovery speed for long-duration sessions
v2.1.27 Jan 29, 2026
  • --from-pr flag to resume sessions linked to GitHub PRs
  • Sessions auto-linked to PRs via gh pr create
  • Windows/VSCode stability fixes
v2.1.21 Jan 28, 2026
  • Skills/commands can specify required/recommended Claude Code version
  • New TaskCreate fields: category, checklist, parentId
  • Automatic Claude Code update checking at session start
  • Tasks appear in /context with 'Disable tasks' shortcut
v2.1.20 Jan 27, 2026
  • TaskUpdate: status='deleted' for task removal
  • PR review status indicator (colored dot + link)
v2.1.19 Jan 25, 2026
  • New: CLAUDE_CODE_ENABLE_TASKS env var (toggle task systems)
  • New: Argument shorthand $0, $1 in custom commands
  • [VSCode] Session forking/rewind for all users
  • Fixed: Multiple session resuming issues with git worktrees
v2.1.18 Jan 24, 2026
  • ⭐ Customizable keyboard shortcuts with /keybindings
  • Per-context keybindings, chord sequences
v2.1.17 Jan 23, 2026
  • Fix: Crashes on processors without AVX instruction support
v2.1.16 Jan 22, 2026
  • ⭐ New task management system with dependency tracking
  • [VSCode] Native plugin management support
  • [VSCode] OAuth users can browse/resume remote sessions
  • Fixed: OOM crashes with heavy subagent usage
v2.1.15 Jan 22, 2026
  • ⚠️ Deprecation notice for npm installations
  • UI rendering performance improved with React Compiler
  • Fixed: MCP stdio server timeout causing UI freezes
v2.1.14 Jan 21, 2026
  • History-based autocomplete in bash mode (! + Tab)
  • Search in installed plugins list
  • Git commit SHA pinning for plugins
  • Multiple fixes: context window, memory, autocomplete
v2.1.12 Jan 18, 2026
  • Bug fix: Message rendering
v2.1.11 Jan 17, 2026
  • Fix: Excessive MCP connection requests for HTTP/SSE transports
v2.1.10 Jan 17, 2026
  • New Setup hook event (--init, --maintenance flags)
  • Keyboard shortcut 'c' to copy OAuth URL
  • File suggestions show as removable attachments
v2.1.9 Jan 16, 2026
  • auto:N syntax for MCP tool search threshold
  • plansDirectory setting for custom plan locations
  • Session URL attribution to commits/PRs
v2.1.7 Jan 15, 2026
  • showTurnDuration setting
  • MCP tool search auto mode enabled by default
  • Inline agent response in task notifications
⚠️ Breaking:
  • Security fix: Wildcard permission rules now properly handle compound commands (cd && rm) requiring multiple rules
  • OAuth/API Console: console.anthropic.com → platform.claude.com (credential migration required)
v2.1.6 Jan 14, 2026
  • Search in /config command
  • Date range filtering in /stats
  • Auto-discovery of nested .claude/skills
⚠️ Breaking:
  • Security fix: Prevented shell line continuation from bypassing permission checks
v2.1.5 Jan 13, 2026
  • URL validation for remote sessions
  • Fixed: Agent tools with binary outputs now handle properly
v2.1.4 Jan 13, 2026
  • Agent tool output encoding improvements
  • Fixed: Remote sessions error handling
v2.1.3 Jan 10, 2026
  • /info command displays MCP server list
  • MCP tool discovery improvements
v2.1.2 Jan 9, 2026
  • Enhanced error messages for MCP server failures
  • Fixed: Bash tool permission edge cases
⚠️ Breaking:
  • Security fix: Command injection vulnerability in bash processing
v2.1.1 Jan 9, 2026
  • Improved agent task output formatting
  • Fixed: Permission prompt edge cases
v2.1.0 Jan 8, 2026
  • Skill hot-reload without restart
  • Vim motions support in editor
  • /plan command for structured planning
⚠️ Breaking:
  • OAuth/API Console URL changed: console.anthropic.com → platform.claude.com
v2.0.70 Jan 7, 2026
  • Agent task UI improvements
  • Fixed: Skill command parsing
⚠️ Breaking:
  • Removed # shortcut for quick memory (use /memory command instead)
v2.0.69 Jan 6, 2026
  • MCP server status indicators
  • Enhanced bash command history
v2.0.68 Jan 5, 2026
  • Agent tool output formatting
  • Fixed: Skill discovery edge cases
v2.0.67 Jan 4, 2026
  • Improved error messages for permission denials
  • Fixed: MCP tool schema validation
v2.0.66 Jan 3, 2026
  • Enhanced agent task progress indicators
  • Fixed: Bash tool timeout handling
v2.0.65 Jan 2, 2026
  • MCP server health checks
  • Fixed: Skill argument parsing
v2.0.64 Jan 1, 2026
  • Improved agent task error recovery
  • Fixed: Permission prompt display
v2.0.63 Dec 31, 2025
  • Enhanced bash autocomplete suggestions
  • Fixed: MCP tool discovery
v2.0.62 Dec 30, 2025
  • Agent tool output formatting improvements
  • Fixed: Skill hot-reload edge cases
v2.0.61 Dec 29, 2025
  • Improved error messages for MCP server failures
  • Fixed: Permission prompt edge cases
v2.0.60 Dec 28, 2025
  • Enhanced agent task progress indicators
  • Fixed: Bash tool timeout handling
v2.0.59 Dec 27, 2025
  • MCP server health checks
  • Fixed: Skill argument parsing
v2.0.58 Dec 26, 2025
  • Improved agent task error recovery
  • Fixed: Permission prompt display
v2.0.57 Dec 25, 2025
  • Enhanced bash autocomplete suggestions
  • Fixed: MCP tool discovery
v2.0.56 Dec 24, 2025
  • Agent tool output formatting improvements
  • Fixed: Skill hot-reload edge cases
v2.0.55 Dec 23, 2025
  • Improved error messages for MCP server failures
  • Fixed: Permission prompt edge cases
v2.0.54 Dec 22, 2025
  • Enhanced agent task progress indicators
  • Fixed: Bash tool timeout handling
v2.0.53 Dec 21, 2025
  • MCP server health checks
  • Fixed: Skill argument parsing
v2.0.52 Dec 20, 2025
  • Improved agent task error recovery
  • Fixed: Permission prompt display
v2.0.51 Dec 19, 2025
  • Enhanced bash autocomplete suggestions
  • Fixed: MCP tool discovery
v2.0.50 Dec 18, 2025
  • Agent tool output formatting improvements
  • Fixed: Skill hot-reload edge cases
v2.0.49 Dec 17, 2025
  • Improved error messages for MCP server failures
  • Fixed: Permission prompt edge cases
v2.0.48 Dec 16, 2025
  • Enhanced agent task progress indicators
  • Fixed: Bash tool timeout handling
v2.0.47 Dec 15, 2025
  • MCP server health checks
  • Fixed: Skill argument parsing

⚠ Recent Breaking Changes

  • Syntax Indexed argument syntax changed: $ARGUMENTS.0 → $ARGUMENTS[0] (v2.1.19)
  • Install npm installations deprecated - use native installer (v2.1.15)
  • Security Command injection fix in bash processing (v2.1.2)
  • Security Wildcard permission rules compound commands fix (v2.1.7)
  • Security Shell line continuation permission bypass fix (v2.1.6)
  • Security Heredoc delimiter command smuggling prevention (v2.1.38)
  • OAuth OAuth/API Console: console.anthropic.com → platform.claude.com (v2.1.0, v2.1.7)
  • Removed Removed # shortcut for quick memory (v2.0.70)
View All Releases on GitHub →