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claude-code-ultimate-guide/guide/core/claude-code-releases.md
Florian BRUNIAUX eea5662a65 docs: update Claude Code releases to v2.1.78 
- Update latest tracked version: v2.1.77 → v2.1.78
- Add v2.1.78 highlights: StopFailure hook, ${CLAUDE_PLUGIN_DATA}
  persistent plugin state, streaming line-by-line, 3 security fixes
  (silent sandbox disable, MCP deny rules bypass, protected dirs in
  bypassPermissions mode)
- Update CHANGELOG with release tracking entry

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-18 15:08:33 +01:00

53 KiB
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title description tags
Claude Code Release History Condensed changelog of official Claude Code releases with highlights and breaking changes
reference
release

Claude Code Release History

Condensed changelog of Claude Code official releases. Full details: github.com/anthropics/claude-code/CHANGELOG.md Machine-readable: claude-code-releases.yaml

Latest: v2.1.78 | Updated: 2026-03-18

Quick Jump

  • 2.1.x Series (January-March 2026) — Worktree isolation, background agents, ConfigChange hook, Fast mode Opus 4.6, 1M context, claude.ai MCP connectors, remote-control, auto-memory, /copy command, HTTP hooks, worktree config sharing, ultrathink re-introduced, InstructionsLoaded hook, 4 security fixes, Agent model override restored, 12x SDK token cost reduction, /context actionable suggestions, modelOverrides setting, 1M context Opus 4.6 default for Max/Team/Enterprise, MCP elicitation, PostCompact hook, /effort command, Opus 4.6 64k/128k output tokens, allowRead sandbox setting, /branch command, StopFailure hook, streaming line-by-line
  • 2.0.x Series (Nov 2025 - Jan 2026) — Opus 4.5, Claude in Chrome, Background agents
  • Breaking Changes Summary
  • Milestone Features

2.1.x Series (January-March 2026)

v2.1.78 (2026-03-18)

  • New: StopFailure hook event that fires when the turn ends due to an API error (rate limit, auth failure, etc.)
  • New: ${CLAUDE_PLUGIN_DATA} variable for plugin persistent state that survives plugin updates; /plugin uninstall now prompts before deleting plugin data
  • New: effort, maxTurns, and disallowedTools frontmatter support for plugin-shipped agents
  • New: ANTHROPIC_CUSTOM_MODEL_OPTION env var to add a custom entry to the /model picker (with optional _NAME and _DESCRIPTION suffixed vars)
  • New: Terminal notifications (iTerm2/Kitty/Ghostty popups, progress bar) now reach the outer terminal when running inside tmux with set -g allow-passthrough on
  • New: Response text now streams line-by-line as it's generated
  • Fixed: ⚠️ Security — Silent sandbox disable when sandbox.enabled: true is set but dependencies are missing — now shows a visible startup warning
  • Fixed: ⚠️ Security — deny: ["mcp__servername"] permission rules were not removing MCP server tools before sending to the model, allowing it to see and attempt blocked tools
  • Fixed: ⚠️ Security — .git, .claude, and other protected directories were writable without a prompt in bypassPermissions mode
  • Fixed: Infinite loop when API errors triggered stop hooks that re-fed blocking errors to the model
  • Fixed: cc log and --resume silently truncating conversation history on large sessions (>5 MB) that used subagents
  • Fixed: sandbox.filesystem.allowWrite not working with absolute paths (previously required // prefix)
  • Fixed: --worktree flag not loading skills and hooks from the worktree directory
  • Fixed: CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS and includeGitInstructions setting not suppressing git status section in system prompt
  • Fixed: Bash tool not finding Homebrew and other PATH-dependent binaries when VS Code is launched from Dock/Spotlight
  • Fixed: Voice mode modifier-combo push-to-talk keybindings requiring a hold instead of activating immediately
  • Fixed: Voice mode not working on WSL2 with WSLg (Windows 11)
  • Fixed: ANTHROPIC_BETAS environment variable being silently ignored when using Haiku models
  • VSCode: Fixed "API Error: Rate limit reached" when selecting Opus — model dropdown no longer offers 1M context variant to subscribers whose plan tier is unknown
  • Performance: Improved memory usage and startup time when resuming large sessions

v2.1.77 (2026-03-17)

  • New: ⭐ Opus 4.6 default maximum output tokens raised to 64k; upper bound for Opus 4.6 and Sonnet 4.6 raised to 128k tokens
  • New: allowRead sandbox filesystem setting to re-allow read access within denyRead regions
  • New: /copy N to copy the Nth-latest assistant response directly
  • New: /branch command (replaces /fork; /fork still works as an alias)
  • New: SendMessage now auto-resumes stopped agents in the background instead of returning an error
  • Fixed: ⚠️ Security — PreToolUse hooks returning "allow" could bypass deny permission rules including enterprise managed settings
  • Fixed: Auto-updater accumulating tens of gigabytes of memory when slash-command overlay repeatedly opened/closed, triggering overlapping binary downloads
  • Fixed: --resume silently truncating recent conversation history due to a race between memory-extraction writes and the main transcript
  • Fixed: "Always Allow" on compound bash commands (e.g. cd src && npm test) saving a single rule for the full string instead of per-subcommand, leading to dead rules and repeated permission prompts
  • Fixed: Write tool silently converting line endings when overwriting CRLF files or creating files in CRLF directories
  • Fixed: Cost and token usage not tracked when API falls back to non-streaming mode
  • Fixed: CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS not stripping beta tool-schema fields, causing proxy gateways to reject requests
  • Fixed: Bash tool reporting errors for successful commands when system temp directory path contains spaces
  • Fixed: Paste being lost when typing immediately after pasting; Ctrl+D in /feedback deleting forward instead of exiting
  • Fixed: Various rendering fixes: ordered list numbers, CJK bleeding, background colors in tmux, hyperlinks opening twice in VS Code
  • Fixed: Teammate panes not closing when leader exits; iTerm2 session crash when selecting text inside tmux over SSH
  • Breaking: Agent tool no longer accepts a resume parameter — use SendMessage({to: agentId}) to continue a previously spawned agent
  • VSCode: Fixed gitignore patterns with commas silently excluding filetypes from @-mention file picker; improved scroll wheel responsiveness; improved plan preview tab titles
  • Performance: Faster startup on macOS (~60ms) by reading keychain credentials in parallel with module loading; faster --resume on fork-heavy sessions (up to 45% faster, 100-150MB less peak memory)

v2.1.76 (2026-03-14)

  • New: ⭐ MCP elicitation support — MCP servers can now request structured input mid-task via an interactive dialog (form fields or browser URL)
  • New: Elicitation and ElicitationResult hooks to intercept and override MCP input responses before they're sent back to the server
  • New: PostCompact hook that fires after compaction completes
  • New: -n / --name <name> CLI flag to set a display name for the session at startup
  • New: worktree.sparsePaths setting for claude --worktree in large monorepos — check out only needed directories via git sparse-checkout
  • New: /effort slash command to set model effort level
  • Fixed: Deferred tools (loaded via ToolSearch) losing their input schemas after conversation compaction — array and number parameters were being rejected with type errors
  • Fixed: Auto-compaction retrying indefinitely after consecutive failures — circuit breaker now stops after 3 attempts
  • Fixed: Bash(cmd:*) permission rules not matching when a quoted argument contains #
  • Fixed: Slash commands showing "Unknown skill"
  • Fixed: Plan mode asking for re-approval after the plan was already accepted
  • Fixed: Voice mode swallowing keypresses while a permission dialog or plan editor was open
  • Fixed: /voice not working on Windows when installed via npm
  • Fixed: Bridge sessions failing to recover after extended WebSocket disconnects
  • Improved: --worktree startup performance by reading git refs directly, skipping redundant git fetch
  • Improved: Killing a background agent now preserves its partial results in the conversation context
  • Improved: Model fallback notifications — now always visible with human-friendly model names
  • Improved: Stale worktree cleanup — worktrees left behind after interrupted parallel runs are automatically cleaned up
  • Improved: Blockquote readability on dark terminal themes — italic with left bar instead of dim
  • Updated: --plugin-dir now accepts one path only; use repeated flags for multiple directories
  • VSCode: Fixed gitignore patterns containing commas silently excluding entire filetypes from the @-mention file picker

v2.1.75 (2026-03-13)

  • New: ⭐ 1M context window for Opus 4.6 now enabled by default for Max, Team, and Enterprise plans (previously required extra usage)
  • New: Session name display on the prompt bar when using /rename
  • New: Last-modified timestamps on memory files — helps Claude reason about freshness of memories
  • New: Hook source display (settings/plugin/skill) in permission prompts when a hook requires confirmation
  • New: /color command available for all users to set a prompt-bar color
  • Fixed: Token estimation over-counting for thinking and tool_use blocks (was causing premature context compaction)
  • Fixed: Bash tool mangling ! in piped commands (e.g. jq 'select(.x != .y)' now works correctly)
  • Fixed: Voice mode not activating correctly on fresh installs without toggling /voice twice
  • Fixed: Claude Code header not updating model name after switching with /model or Option+P
  • Fixed: Session crash when attachment message computation returns undefined values
  • Fixed: Managed-disabled plugins showing up in /plugin Installed tab
  • Fixed: Corrupted marketplace config path handling
  • Fixed: /resume losing session names after resuming a forked or continued session
  • Improved: Startup performance on macOS non-MDM machines (skips unnecessary subprocess spawns)
  • Improved: Async hook completion messages suppressed by default (visible with --verbose or transcript mode)

v2.1.74 (2026-03-12)

  • New: /context command shows actionable suggestions — identifies context-heavy tools, memory bloat, capacity warnings with optimization tips
  • New: autoMemoryDirectory setting to configure custom directory for auto-memory storage
  • Fixed: Memory leak in streaming API response buffers — unbounded RSS growth on Node.js/npm path resolved
  • Fixed: Managed policy ask rules being bypassed by user allow rules or skill allowed-tools
  • Fixed: MCP OAuth authentication hanging when callback port is already in use
  • Fixed: MCP OAuth refresh (Slack) never prompting re-auth after refresh token expires
  • Fixed: Voice mode on macOS native binary — binary now includes audio-input entitlement for microphone permission prompt
  • Fixed: SessionEnd hooks killed after 1.5s regardless of hook.timeout (now configurable via CLAUDE_CODE_SESSIONEND_HOOKS_TIMEOUT_MS)
  • Changed: --plugin-dir local dev copies now override installed marketplace plugins with same name
  • VSCode: Fixed delete button not working for Untitled sessions

v2.1.73 (2026-03-11)

  • New: modelOverrides setting — map model picker entries to custom provider model IDs (Bedrock inference profile ARNs, etc.)
  • New: Actionable guidance when OAuth login or connectivity checks fail due to SSL certificate errors (corporate proxies, NODE_EXTRA_CA_CERTS)
  • Fixed: Freezes and 100% CPU loops triggered by permission prompts for complex bash commands
  • Fixed: Deadlock when many skill files changed at once (e.g. git pull in repo with large .claude/skills/ directory)
  • Fixed: Bash tool output lost when running multiple Claude Code sessions in the same project directory
  • Fixed: Subagents with model: opus/sonnet/haiku being silently downgraded on Bedrock, Vertex, Foundry
  • Fixed: Background bash processes from subagents not cleaned up when agent exits
  • Fixed: SessionStart hooks firing twice when resuming via --resume or --continue
  • Fixed: JSON-output hooks injecting no-op system-reminder messages into the model's context on every turn
  • Fixed: Linux sandbox failing with "ripgrep not found" on native builds
  • Fixed: Linux native modules on Amazon Linux 2 (glibc 2.26 systems)
  • Changed: Default Opus model on Bedrock, Vertex, Foundry → Opus 4.6 (was 4.1)
  • Changed: Deprecated /output-style — use /config instead; output style fixed at session start for better prompt caching
  • VSCode: Fixed HTTP 400 errors for users behind proxies or on Bedrock/Vertex with Claude 4.5 models

v2.1.72 (2026-03-09)

  • New: Restored model parameter on Agent tool — per-invocation model overrides are back
  • New: /plan accepts optional description (e.g., /plan fix the auth bug) to enter plan mode and start immediately
  • New: ExitWorktree tool to leave an EnterWorktree session
  • New: CLAUDE_CODE_DISABLE_CRON env var to stop scheduled cron jobs mid-session
  • New: lsof, pgrep, tput, ss, fd, fdfind added to bash auto-approval allowlist
  • New: /copy w key writes selection directly to file, bypassing clipboard (useful over SSH)
  • Changed: Simplified effort levels to low/medium/high (removed max), new symbols ○ ◐ ●; use /effort auto to reset
  • Changed: CLAUDE.md HTML comments (<!-- ... -->) now hidden from Claude when auto-injected (visible via Read tool)
  • Changed: /config — Escape cancels changes, Enter saves and closes, Space toggles settings
  • Fixed: SDK query() prompt cache invalidation — up to 12x input token cost reduction
  • Fixed: Tool search now activates with ANTHROPIC_BASE_URL when ENABLE_TOOL_SEARCH is set
  • Fixed: Skill hooks firing twice per event when a hooks-enabled skill is invoked by the model
  • Fixed: /clear killing background agent/bash tasks — only foreground tasks now cleared
  • Fixed: Worktree isolation: Task tool resume not restoring cwd, background task notifications missing worktreePath/worktreeBranch
  • Fixed: --continue not resuming from most recent point after --compact
  • Fixed: Team agents now inherit the leader's model
  • Fixed: Parallel tool calls — only Bash errors cascade to siblings (Read/WebFetch/Glob failures no longer cancel siblings)
  • Fixed: Multiple hooks issues: transcript_path wrong for resumed/forked sessions, async hooks not receiving stdin, PostToolUse block reason displaying twice
  • Fixed: Several sandbox permission, plugin installation (Windows/OneDrive), and voice mode issues
  • Perf: Reduced bundle size by ~510 KB; improved CPU utilization in long sessions; faster bash init via native module

v2.1.69 (2026-03-04)

  • Security: Fixed nested skill discovery loading skills from gitignored directories like node_modules — critical security fix
  • Security: Fixed symlink bypass allowing writes outside working directory in acceptEdits mode
  • Security: Fixed trust dialog silently enabling all .mcp.json servers on first run (per-server approval now required)
  • Security: Fixed sandbox not blocking non-allowed domains when allowManagedDomainsOnly is enabled
  • New: InstructionsLoaded hook event fires when CLAUDE.md or .claude/rules/*.md files are loaded into context
  • New: agent_id, agent_type, worktree fields added to all hook events (subagent tracking, worktree metadata)
  • New: ${CLAUDE_SKILL_DIR} variable for skills to reference their own installation directory in SKILL.md content
  • New: /reload-plugins command to activate pending plugin changes without restarting Claude Code
  • New: Voice STT expanded to 20 languages (+10: Russian, Polish, Turkish, Dutch, Ukrainian, Greek, Czech, Danish, Swedish, Norwegian)
  • New: sandbox.enableWeakerNetworkIsolation setting (macOS) for Go tools (gh, gcloud, terraform) behind MITM proxy
  • New: includeGitInstructions setting (and CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS env var) to remove built-in commit/PR instructions from system prompt
  • New: oauth.authServerMetadataUrl config option for MCP servers with custom OAuth discovery
  • New: pluginTrustMessage in managed settings for organization-specific plugin trust context
  • New: Optional --name argument for /remote-control to set a custom session title visible in claude.ai/code
  • Changed: Sonnet 4.5 users on Pro/Max/Team auto-migrated to Sonnet 4.6
  • Changed: /resume picker now shows most recent prompt instead of first one
  • Fixed: 15+ memory leaks — React Compiler memoCache, REPL render scopes (~35MB over 1000 turns), teammate history pinning, hook event accumulation
  • Fixed: ~16MB baseline memory reduction (deferred Yoga WASM preloading)
  • Fixed: MCP binary content (PDFs, Office docs, audio) now saved to disk with correct extension instead of raw base64 in context
  • Fixed: Startup performance — skills/plugins loading, worktree git subprocess, macOS keychain, managed settings
  • Fixed: Escape not interrupting running turn when input box has draft text
  • Fixed: Duplicate CLAUDE.md, slash commands, agents, and rules when running from nested worktree
  • Fixed: macOS keychain corruption with multiple OAuth MCP servers (stdin buffer overflow)

v2.1.68 (2026-03-04)

  • Changed: Opus 4.6 now defaults to medium effort for Max and Team subscribers (sweet spot between speed and thoroughness)
  • New: Re-introduced ultrathink keyword to enable high effort for the next turn specifically
  • Breaking: Opus 4 and Opus 4.1 removed from Claude Code on first-party API — users auto-migrated to Opus 4.6

v2.1.66 (2026-03-04)

  • Fixed: Reduced spurious error logging

v2.1.63 (2026-02-27)

  • New: HTTP hooks — hooks can now POST JSON to a URL and receive JSON back, instead of running a shell command. Useful for CI/CD integrations and stateless backend endpoints (v2.1.63+)
  • New: Project configs & auto-memory now shared across all git worktrees of the same repository
  • New: /simplify and /batch bundled slash commands
  • New: ENABLE_CLAUDEAI_MCP_SERVERS=false env var to opt out of claude.ai MCP server exposure
  • Improved: /model command shows currently active model in picker
  • Fixed: Major wave of memory leaks — WebSocket listeners, MCP caches, git root detection cache, JSON parsing cache, bash prefix cache, subagent AppState after compaction, MCP server fetch caches on reconnect
  • Fixed: VSCode remote sessions not appearing in conversation history
  • Fixed: /clear not resetting cached skills (stale skill content persisted to new conversation)
  • Fixed: Local slash command output (e.g. /cost) appearing as user messages in UI

v2.1.62 (2026-02-27)

  • Fixed: Prompt suggestion cache regression that reduced cache hit rates

v2.1.61 (2026-02-27)

  • Fixed: Concurrent writes corrupting config file on Windows

v2.1.59 (2026-02-26)

  • New: Auto-memory — Claude automatically saves useful context to memory; manage with /memory
  • New: /copy command — interactive picker when code blocks are present, select individual blocks or full response
  • Improved: Smarter "always allow" prefix suggestions for compound bash commands (per-subcommand prefixes instead of treating whole command as one)
  • Improved: Memory usage in multi-agent sessions (releases completed subagent task state)
  • Improved: Ordering of short task lists
  • Fixed: MCP OAuth token refresh race condition when running multiple Claude Code instances simultaneously
  • Fixed: Shell commands not showing clear error message when working directory has been deleted
  • Fixed: Config file corruption that could wipe authentication when multiple Claude Code instances ran simultaneously

v2.1.58 (2026-02-26)

  • Expanded: Remote Control available to more users

v2.1.56 (2026-02-25)

  • Fixed: VSCode: Another cause of "command 'claude-vscode.editor.openLast' not found" crashes

v2.1.55 (2026-02-25)

  • Fixed: BashTool failing on Windows with EINVAL error

v2.1.53 (2026-02-25)

  • Fixed: UI flicker where user input briefly disappeared after submission before rendering
  • Fixed: Bulk agent kill (ctrl+f) now sends single aggregate notification instead of one per agent, and properly clears command queue
  • Fixed: Graceful shutdown sometimes leaving stale sessions when using Remote Control (parallelized teardown)
  • Fixed: --worktree flag sometimes being ignored on first launch
  • Fixed: Panic ("switch on corrupted value") on Windows
  • Fixed: Crash when spawning many processes on Windows
  • Fixed: Crash in WebAssembly interpreter on Linux x64 & Windows x64
  • Fixed: Crash that sometimes occurred after 2 minutes on Windows ARM64

v2.1.52 (2026-02-24)

  • Fixed: VSCode extension crash on Windows ("command 'claude-vscode.editor.openLast' not found")

v2.1.51 (2026-02-24)

  • New: claude remote-control subcommand for external builds — enables local environment serving for all users
  • New: Custom npm registries and specific version pinning when installing plugins from npm sources
  • New: SDK: CLAUDE_CODE_ACCOUNT_UUID, CLAUDE_CODE_USER_EMAIL, CLAUDE_CODE_ORGANIZATION_UUID env vars to provide account info synchronously (eliminates race conditions in early telemetry)
  • Changed: BashTool now skips login shell (-l flag) by default when shell snapshot is available — performance improvement (previously required CLAUDE_BASH_NO_LOGIN=true)
  • Changed: Tool results larger than 50K characters now persisted to disk (previously 100K threshold)
  • Improved: /model picker now shows human-readable labels (e.g., "Sonnet 4.5") instead of raw model IDs for pinned versions, with upgrade hint when newer version available
  • Fixed: Security issue where statusLine and fileSuggestion hook commands could execute without workspace trust acceptance in interactive mode
  • Fixed: Duplicate control_response messages from WebSocket reconnects causing API 400 errors
  • Fixed: Slash command autocomplete crashing when a plugin's SKILL.md description is a YAML array or other non-string type

v2.1.50 (2026-02-21)

  • New: WorktreeCreate and WorktreeRemove hook events — custom VCS setup/teardown when agent worktree isolation creates or removes worktrees
  • New: isolation: worktree in agent definitions for declarative worktree isolation (no longer requires setting in each call)
  • New: claude agents CLI command to list all configured agents
  • New: startupTimeout configuration for LSP servers
  • New: CLAUDE_CODE_DISABLE_1M_CONTEXT env var to disable 1M context window support
  • New: Pre-configured OAuth client credentials for MCP servers that don't support Dynamic Client Registration (Slack); use --client-id and --client-secret with claude mcp add
  • New: VSCode /extra-usage command support
  • Changed: Opus 4.6 (fast mode) now includes full 1M context window
  • Changed: CLAUDE_CODE_SIMPLE mode now also disables MCP tools, attachments, hooks, and CLAUDE.md loading for fully minimal experience
  • Fixed: Bug where resumed sessions could be invisible when working directory involved symlinks
  • Fixed: disableAllHooks setting to respect managed settings hierarchy (non-managed settings can no longer disable managed hooks)
  • Fixed: Linux: native modules not loading on systems with glibc older than 2.30 (RHEL 8)
  • Fixed: Memory leak in agent teams where completed teammate tasks were never garbage collected
  • Fixed: Memory leak where completed task state objects were never removed from AppState
  • Fixed: Memory leak where LSP diagnostic data was never cleaned up after delivery
  • Fixed: Unbounded memory growth in long sessions (file history snapshots capped; circular buffer fix; stream buffers released after use)
  • Fixed: MCP tools not discovered when tool search is enabled and prompt passed as launch argument
  • Fixed: Prompt suggestion cache regression that reduced cache hit rates
  • Improved: Startup performance for headless mode (-p) by deferring Yoga WASM and UI component imports
  • Improved: Memory usage during long sessions by clearing internal caches after compaction and clearing large tool results after processing

v2.1.49 (2026-02-20)

  • New: --worktree / -w CLI flag to start Claude in an isolated git worktree
  • New: Subagents support isolation: "worktree" for working in a temporary git worktree
  • New: background: true field in agent definitions to always run as a background task
  • New: ConfigChange hook event — fires when configuration files change during a session (enterprise security auditing + blocking)
  • New: Plugins can ship settings.json for default configuration
  • New: --from-pr flag to resume sessions linked to a specific GitHub PR (+ sessions auto-linked when created via gh pr create)
  • New: PreToolUse hooks can return additionalContext to the model
  • New: plansDirectory setting to customize where plan files are stored
  • New: auto:N syntax for configuring MCP tool search auto-enable threshold
  • New: Setup hook event triggered via --init, --init-only, or --maintenance CLI flags
  • Changed: Sonnet 4.5 1M context removed from Max plan — Sonnet 4.6 now has 1M context (switch in /model)
  • Changed: Simple mode now includes file edit tool (not just Bash)
  • Fixed: File-not-found errors now suggest corrected paths when model drops repo folder
  • Fixed: Ctrl+C and ESC silently ignored when background agents running + main thread idle (double-press within 3s now kills all agents)
  • Fixed: Plugin enable/disable auto-detects correct scope (no longer defaults to user scope)
  • Fixed: Context window blocking limit calculated too aggressively (~65% instead of ~98%)
  • Fixed: Memory issues causing crashes with parallel subagents
  • Fixed: Memory leak in long sessions where stream resources not cleaned up
  • Fixed: @ symbol incorrectly triggering file autocomplete in bash mode
  • Fixed: Background agent results returning raw transcript data instead of final answer
  • Fixed: Slash command autocomplete selecting wrong command (e.g. /context vs /compact)
  • Improved: @ mention file suggestion speed (~3× faster in git repos)
  • Improved: MCP connection: list_changed notification support for dynamic tool updates without reconnection
  • Improved: Skills invoke progress display; skill suggestions prioritize recently/frequently used
  • Improved: Incremental output for async agents; token count includes background agent tokens

v2.1.47 (2026-02-19)

  • Improved: VS Code plan preview auto-updates as Claude iterates; commenting enabled only when plan is ready for review; preview stays open when rejected for revision
  • New: ctrl+f kills all background agents simultaneously (replaces double-ESC); ESC now cancels main thread only, background agents keep running
  • New: last_assistant_message field added to Stop and SubagentStop hook inputs (access final response without parsing transcript files)
  • New: chat:newline keybinding action; added_dirs in statusline JSON workspace section
  • Fixed: Compaction failing when conversation contains many PDF documents (strips document blocks alongside images)
  • Fixed: Edit tool corrupting Unicode curly quotes (" " ' ') by replacing with straight quotes
  • Fixed: Parallel file write/edit — single file failure no longer aborts sibling operations
  • Fixed: OSC 8 hyperlinks only clickable on first line when link text wraps across multiple terminal lines
  • Fixed: Bash permission classifier now validates match descriptions against actual input rules (prevents hallucinated permissions)
  • Fixed: Config backups timestamped and rotated (5 most recent kept) instead of overwriting
  • Fixed: Session name lost after context compaction; plan mode lost after compaction
  • Fixed: Hooks (PreToolUse, PostToolUse) silently failing on Windows (now uses Git Bash)
  • Fixed: Custom agents/skills not discovered in git worktrees (main repo .claude/ now included)
  • Fixed: 70+ additional rendering, session, permission, and platform fixes

v2.1.46 (2026-02-19)

  • Fixed: Orphaned Claude Code processes after terminal disconnect on macOS
  • New: Support for using claude.ai MCP connectors in Claude Code

v2.1.45 (2026-02-17)

  • New: Claude Sonnet 4.6 model support
  • New: spinnerTipsOverride setting — customize spinner tips via tips array, opt out of built-in tips with excludeDefault: true
  • New: SDK SDKRateLimitInfo and SDKRateLimitEvent types for rate limit status tracking (utilization, reset times, overage)
  • Fixed: Agent Teams teammates failing on Bedrock, Vertex, and Foundry (env vars now propagated to tmux-spawned processes)
  • Fixed: Sandbox "operation not permitted" errors on macOS temp file writes
  • Fixed: Task tool (backgrounded agents) crashing with ReferenceError on completion
  • Improved: Memory usage for large shell command outputs (RSS no longer grows unboundedly)
  • Improved: Startup performance (removed eager session history loading)
  • Improved: Plugin-provided commands, agents, and hooks available immediately after install (no restart needed)

v2.1.44 (2026-02-17)

  • Fixed: Auth refresh errors

v2.1.43 (2026-02-17)

  • Fixed: AWS auth refresh hanging indefinitely (added 3-minute timeout)
  • Fixed: Structured-outputs beta header being sent unconditionally on Vertex/Bedrock
  • Fixed: Spurious warnings for non-agent markdown files in .claude/agents/ directory

v2.1.42 (2026-02-14)

  • Improved: Startup performance via deferred Zod schema construction (faster on large projects)
  • Improved: Prompt cache hit rate by moving date outside the system prompt (avoids daily cache invalidation)
  • New: Opus 4.6 effort callout for eligible users (one-time onboarding)
  • Fixed: /resume showing interrupt messages as session titles
  • Fixed: Image dimension limit errors now suggest using /compact instead of opaque failure

v2.1.41 (2026-02-13)

  • New: Guard against launching Claude Code inside another Claude Code session
  • New: claude auth login, claude auth status, claude auth logout CLI subcommands
  • New: Windows ARM64 (win32-arm64) native binary support
  • Added speed attribute to OTel events and trace spans for fast mode visibility
  • Improved: /rename auto-generates session name from conversation context when called without arguments
  • Improved narrow terminal layout for prompt footer
  • Fixed: Agent Teams using wrong model identifier for Bedrock, Vertex, and Foundry customers
  • Fixed: Crash when MCP tools return image content during streaming
  • Fixed: /resume session previews showing raw XML tags instead of readable command names
  • Fixed: Opus 4.6 launch announcement showing for Bedrock/Vertex/Foundry users
  • Fixed: Hook blocking errors (exit code 2) not showing stderr to the user
  • Fixed: Structured-outputs beta header sent unconditionally on Vertex/Bedrock
  • Fixed: File resolution for @-mentions with anchor fragments (e.g., @README.md#installation)
  • Fixed: FileReadTool blocking on FIFOs, /dev/stdin, and large files
  • Fixed: Background task notifications not delivered in streaming Agent SDK mode
  • Fixed: Auto-compact failure error notifications shown to users
  • Fixed: Stale permission rules not clearing when settings change on disk
  • Fixed: Permission wait time included in subagent elapsed time display
  • Fixed: Proactive ticks firing while in plan mode
  • Improved: Model error messages for Bedrock/Vertex/Foundry with fallback suggestions

v2.1.39 (2026-02-10)

  • Improved: Terminal rendering performance
  • Fixed: Fatal errors being swallowed instead of displayed
  • Fixed: Process hanging after session close
  • Fixed: Character loss at terminal screen boundary
  • Fixed: Blank lines in verbose transcript view

v2.1.38 (2026-02-10)

  • Fixed: VS Code terminal scroll-to-top regression introduced in 2.1.37
  • Fixed: Tab key queueing slash commands instead of autocompleting
  • Fixed: Bash permission matching for commands using environment variable wrappers
  • Fixed: Text between tool uses disappearing when not using streaming
  • Security: Improved heredoc delimiter parsing to prevent command smuggling
  • Security: Blocked writes to .claude/skills directory in sandbox mode

v2.1.37 (2026-02-08)

  • Fixed /fast not immediately available after enabling /extra-usage

v2.1.36 (2026-02-08) ⭐

  • ⭐ Fast mode now available for Opus 4.6 — Same model, faster output. Toggle with /fast. Learn more

v2.1.34 (2026-02-07)

  • Fixed a crash when agent teams setting changed between renders
  • Security fix: Commands excluded from sandboxing (via sandbox.excludedCommands or dangerouslyDisableSandbox) could bypass the Bash ask permission rule when autoAllowBashIfSandboxed was enabled

v2.1.33 (2026-02-06)

Highlights:

  • Agent teams fixes — Improved tmux session handling and availability warnings
  • New hook events — TeammateIdle and TaskCompleted for multi-agent workflows
  • Agent frontmatter enhancements:
    • memory field for user/project/local scope memory selection
    • Task(agent_type) syntax to restrict sub-agent spawning in agent definitions
  • Plugin identification — Plugin name now shown in skill descriptions and /skills menu
  • VSCode improvements — Remote sessions support, branch/message count in session picker
  • Fixed: Thinking interruption, streaming abort, proxy settings, /resume XML markup
  • Improved: API connection errors show specific cause instead of generic message
  • Improved: Invalid managed settings errors now surfaced properly
  • Multiple stability fixes across agent workflows and tool interactions

v2.1.32 (2026-02-05) ⭐ MAJOR

Highlights:

  • ⭐ Claude Opus 4.6 is now available!
  • ⭐ Agent teams research preview — Multi-agent collaboration for complex tasks (token-intensive, requires CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1)
  • ⭐ Automatic memory recording and recall — Claude now automatically records and recalls memories as it works
  • "Summarize from here" — Message selector now allows partial conversation summarization
  • Skills from .claude/skills/ in --add-dir directories auto-load
  • Fixed: @ file completion showing incorrect relative paths from subdirectories
  • Fixed: Bash tool no longer throws "Bad substitution" errors with JavaScript template literals (e.g., ${index + 1})
  • Improved: Skill character budget now scales with context window (2% of context)
  • Improved: --resume re-uses --agent value from previous conversation by default
  • Fixed: Thai/Lao spacing vowels rendering issues
  • [VSCode] Fixed slash commands incorrectly executing when pressing Enter with preceding text
  • [VSCode] Added spinner when loading past conversations list

v2.1.31 (2026-02-03)

  • Session resume hint — Exit message now shows how to continue your conversation later
  • Full-width (zenkaku) space support — Added Japanese IME checkbox selection support
  • Fixed: PDF too large errors permanently locking sessions (now recoverable without starting new conversation)
  • Fixed: Bash commands incorrectly reporting "Read-only file system" when sandbox enabled
  • Fixed: Plan mode crash when project config missing default fields
  • Fixed: temperatureOverride being silently ignored in streaming API path
  • Fixed: LSP shutdown/exit compatibility with strict language servers
  • Improved: System prompts now guide model toward Read/Edit/Glob/Grep tools instead of bash equivalents
  • Improved: PDF and request size error messages show actual limits (100 pages, 20MB)
  • Reduced: Layout jitter when spinner appears/disappears during streaming

v2.1.30 (2026-02-02)

  • ⭐ PDF page range support — pages parameter in Read tool for PDFs (e.g., pages: "1-5") with lightweight references for large PDFs (>10 pages)
  • ⭐ Pre-configured OAuth for MCP servers — Built-in client credentials for servers without Dynamic Client Registration (Slack support via --client-id and --client-secret)
  • ⭐ New /debug command — Claude can help troubleshoot current session issues
  • Additional git flags — Support for git log and git show read-only flags (--topo-order, --cherry-pick, --format, --raw)
  • Task tool metrics — Results now include token count, tool uses, and duration
  • Reduced motion mode — New config option for accessibility
  • Fixed: Phantom "(no content)" text blocks in API history (reduces token waste)
  • Fixed: Prompt cache not invalidating when tool schemas changed
  • Fixed: 400 errors after /login with thinking blocks
  • Fixed: Session resume hang with corrupted parentUuid cycles
  • Fixed: Rate limit showing wrong "/upgrade" for Max 20x users
  • Fixed: Permission dialogs stealing focus while typing
  • Fixed: Subagents unable to access SDK MCP tools
  • Fixed: Windows users with .bashrc unable to run bash
  • Improved: Memory usage for --resume (68% reduction for many sessions)
  • Improved: TaskStop displays stopped command description instead of generic message
  • Changed: /model executes immediately instead of queuing
  • [VSCode] Added multiline input in "Other" text fields (Shift+Enter for new lines)
  • [VSCode] Fixed duplicate sessions in session list

v2.1.29 (2026-01-31)

  • Performance: Fixed startup performance issues when resuming sessions with saved hook context
  • Significantly improved session recovery speed for long-duration sessions

v2.1.27 (2026-01-29)

  • New: --from-pr flag to resume sessions linked to a specific GitHub PR number or URL
  • New: Sessions automatically linked to PRs when created via gh pr create
  • Added tool call failures and denials to debug logs
  • Fixed context management validation error for Bedrock/Vertex gateway users
  • Fixed /context command not displaying colored output
  • Fixed status bar duplicating background task indicator when PR status was shown
  • [Windows] Fixed bash command execution failing for users with .bashrc files
  • [Windows] Fixed console windows flashing when spawning child processes
  • [VSCode] Fixed OAuth token expiration causing 401 errors after extended sessions

v2.1.25 (2026-01-30)

  • Fixed beta header validation for Bedrock and Vertex gateway users — Ensures CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1 environment variable works correctly

v2.1.23 (2026-01-29)

  • Customizable spinner verbs — New spinnerVerbs setting allows personalization of spinner action words
  • mTLS and corporate proxy connectivity fixes — Improved support for users behind corporate proxies with client certificates
  • Per-user temp directory isolation — Prevents permission conflicts on shared systems
  • Improved terminal rendering performance — Optimized screen data layout for faster updates
  • Fixed: Prompt caching race condition causing 400 errors
  • Fixed: Async hooks not canceling when headless streaming ends
  • Fixed: Tab completion not updating input field
  • Fixed: Ripgrep search timeouts returning empty results instead of errors
  • Changed: Bash commands show timeout duration alongside elapsed time
  • Changed: Merged PRs show purple status indicator in prompt footer
  • [IDE] Fixed: Model options displaying incorrect region strings for Bedrock users in headless mode

v2.1.22 (2026-01-28)

  • Improved task UI performance with virtualization — Task list now uses virtual scrolling for better responsiveness with many tasks
  • Vim selection and deletion fixes — Fixed visual mode selections and dw command behavior
  • LSP improvements: Kotlin support, UTF-16 range handling, better error recovery
  • Tasks now consistently use task-N IDs instead of internal UUIDs
  • Fixed: # keyboard shortcut not working in task creation fields
  • Fixed: Compact tool use rendering in chat history
  • Fixed: Session URL escaping in git commit messages
  • Fixed: Command output handling improvements

v2.1.21 (2026-01-28)

  • Skills/commands can specify required/recommended Claude Code version — Use minClaudeCodeVersion and recommendedClaudeCodeVersion in frontmatter
  • New TaskCreate fields: category (testing, implementation, documentation, etc.), checklist (subtasks as markdown list), parentId (task hierarchy)
  • Automatic Claude Code update checking at session start (respects auto-update settings)
  • Tasks appear in /context output with 'Disable tasks' shortcut for quick toggling
  • Improved task UI: Delete button added, better empty state messaging
  • Fixed: Task deletion now properly removes all related task data
  • Fixed: Shell environment variables expanded correctly in hook commands
  • Fixed: Pasted URLs with parentheses properly formatted in markdown
  • Fixed: Bash output capture for commands with large output

v2.1.20 (2026-01-27)

  • New: TaskUpdate tool can delete tasks via status="deleted"
  • New: PR review status indicator in prompt footer — Shows PR state (approved, changes requested, pending, draft) as colored dot with clickable link
  • Arrow key history navigation in vim normal mode when cursor cannot move further
  • External editor shortcut (Ctrl+G) added to help menu
  • Support for loading CLAUDE.md from --add-dir directories (requires CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MD=1)
  • Fixed: Session compaction issues causing full history load instead of compact summary
  • Fixed: Agents ignoring user messages while actively working
  • Fixed: Wide character (emoji, CJK) rendering artifacts
  • Improved: Task list dynamically adjusts to terminal height
  • Changed: Background agents prompt for tool permissions before launching
  • Changed: Config backups timestamped and rotated (keeps 5 most recent)

v2.1.19 (2026-01-25)

  • New: CLAUDE_CODE_ENABLE_TASKS environment variable — Set to false to temporarily revert to old task system
  • New: Argument shorthand in custom commands — Use $0, $1, etc. instead of verbose syntax
  • [VSCode] Session forking and rewind functionality enabled for all users
  • Fixed: Crashes on processors without AVX instruction support
  • Fixed: Dangling Claude Code processes when terminal closed (SIGKILL fallback)
  • Fixed: /rename and /tag not updating correct session when resuming from different directory (git worktrees)
  • Fixed: Resuming sessions by custom title from different directory
  • Fixed: Pasted text lost when using prompt stash (Ctrl+S) and restore
  • Fixed: Agent list displaying "Sonnet (default)" instead of "Inherit (default)" for agents without explicit model
  • Fixed: Backgrounded hook commands blocking session instead of returning early
  • Fixed: File write preview omitting empty lines
  • Changed: Skills without additional permissions/hooks allowed without approval
  • [SDK] Added replay of queued_command attachment messages when replayUserMessages enabled

⚠️ Breaking:

  • Indexed argument syntax changed: $ARGUMENTS.0 → $ARGUMENTS[0] (bracket syntax)

v2.1.18 (2026-01-24) ⭐

  • ⭐ Customizable keyboard shortcuts — Configure keybindings per context, create chord sequences, personalize workflow
  • Run /keybindings to get started
  • Learn more: code.claude.com/docs/en/keybindings

v2.1.17 (2026-01-23)

  • Fix: Crashes on processors without AVX instruction support

v2.1.16 (2026-01-22) ⭐

  • ⭐ New task management system with dependency tracking
  • [VSCode] Native plugin management support
  • [VSCode] OAuth users can browse and resume remote sessions from Sessions dialog
  • Fixed: Out-of-memory crashes when resuming sessions with heavy subagent usage
  • Fixed: "Context remaining" warning not hidden after /compact
  • [IDE] Fixed race condition on Windows where sidebar view container wouldn't appear

v2.1.15 (2026-01-22)

  • ⚠️ Deprecation notice for npm installations — Run claude install or see docs
  • Improved UI rendering performance with React Compiler
  • Fixed: MCP stdio server timeout not killing child process, which could cause UI freezes

v2.1.14 (2026-01-21)

  • History-based autocomplete in bash mode — Type ! followed by a partial command and press Tab to complete from bash history
  • Search functionality in installed plugins list
  • Support for pinning plugins to specific git commit SHAs for exact version control
  • Fixed: Context window blocking limit calculated too aggressively (~65% instead of ~98%)
  • Fixed: Memory issues and leaks in long-running sessions with parallel subagents
  • Fixed: @ symbol incorrectly triggering file autocomplete in bash mode
  • Fixed: Slash command autocomplete selecting wrong command for similar names
  • Improved: Backspace deletes pasted text as single token

v2.1.12 (2026-01-18)

  • Bug fix: Message rendering

v2.1.11 (2026-01-17)

  • Fix: Excessive MCP connection requests for HTTP/SSE transports

v2.1.10 (2026-01-17)

  • New Setup hook event (--init, --init-only, --maintenance flags)
  • Keyboard shortcut 'c' to copy OAuth URL
  • File suggestions show as removable attachments
  • [VSCode] Plugin install count + trust warnings

v2.1.9 (2026-01-16)

  • auto:N syntax for MCP tool search threshold — Configure when Tool Search activates: ENABLE_TOOL_SEARCH=auto:5 (5% context), auto:10 (default), auto:20 (conservative). See architecture.md for details.
  • plansDirectory setting for custom plan file locations
  • Session URL attribution to commits/PRs from web sessions
  • PreToolUse hooks can return additionalContext
  • ${CLAUDE_SESSION_ID} string substitution for skills

v2.1.7 (2026-01-15)

  • showTurnDuration setting to hide turn duration messages
  • MCP Tool Search auto mode enabled by default — Lazy loading for MCP tools when definitions exceed 10% of context. Based on Anthropic's Advanced Tool Use API feature. Result: 85% token reduction on tool definitions, improved tool selection accuracy (Opus 4: 49%→74%, Opus 4.5: 79.5%→88.1%)
  • Inline display of agent final response in task notifications

⚠️ Breaking:

  • OAuth/API Console URLs changed: console.anthropic.com → platform.claude.com
  • Security fix: Wildcard permission rules could match compound commands

v2.1.6 (2026-01-14)

  • Search functionality in /config command
  • Date range filtering in /stats (press r to cycle)
  • Auto-discovery of skills from nested .claude/skills directories
  • Updates section in /doctor showing auto-update channel

⚠️ Security Fix: Permission bypass via shell line continuation

v2.1.5 (2026-01-13)

  • CLAUDE_CODE_TMPDIR environment variable for custom temp directory

v2.1.4 (2026-01-12)

  • CLAUDE_CODE_DISABLE_BACKGROUND_TASKS environment variable

v2.1.3 (2026-01-11)

  • Merged slash commands and skills (simplified mental model)
  • Release channel toggle (stable/latest) in /config
  • /doctor warnings for unreachable permission rules

v2.1.2 (2026-01-10)

  • Windows Package Manager (winget) support
  • Clickable hyperlinks for file paths (OSC 8 terminals)
  • Shift+Tab shortcut in plan mode for auto-accept edits
  • Large bash outputs saved to disk instead of truncated

⚠️ Breaking:

  • Security fix: Command injection in bash command processing
  • Deprecated: C:\ProgramData\ClaudeCode managed settings path

v2.1.0 (2026-01-08) ⭐ MAJOR

Highlights:

  • ⭐ Automatic skill hot-reload — Skills modified in ~/.claude/skills or .claude/skills immediately available
  • ⭐ Shift+Enter works OOTB in iTerm2, WezTerm, Ghostty, Kitty
  • ⭐ New Vim motions: ; , y yy Y p P text objects (iw aw i" etc.) >> << J
  • Unified Ctrl+B for backgrounding all running tasks
  • /plan command shortcut to enable plan mode
  • Slash command autocomplete anywhere in input
  • language setting for response language (e.g., language: "japanese")
  • Skills context: fork support for forked sub-agent context
  • Hooks support in agent/skill/command frontmatter
  • MCP list_changed notifications support
  • /teleport and /remote-env commands for web sessions
  • Disable specific agents with Task(AgentName) syntax
  • --tools flag in interactive mode
  • YAML-style lists in frontmatter allowed-tools

⚠️ Breaking:

  • OAuth URLs: console.anthropic.com → platform.claude.com
  • Removed permission prompt for entering plan mode
  • [SDK] Minimum zod peer dependency: ^4.0.0

2.0.x Series (November 2025 - January 2026)

v2.0.76 (2026-01-05)

  • Fix: macOS code-sign warning with Claude in Chrome

v2.0.74 (2026-01-04) ⭐

  • ⭐ LSP (Language Server Protocol) tool for code intelligence (go-to-definition, find references, hover)
  • /terminal-setup for Kitty, Alacritty, Zed, Warp
  • Ctrl+T in /theme to toggle syntax highlighting
  • Grouped skills/agents by source in /context

v2.0.72 (2026-01-02) ⭐

  • ⭐ Claude in Chrome (Beta) — Control browser directly from Claude Code
  • Reduced terminal flickering
  • QR code for mobile app download
  • Thinking toggle changed: Tab → Alt+T

v2.0.70 (2025-12-30)

  • Enter key accepts/submits prompt suggestions immediately
  • Wildcard syntax mcp__server__* for MCP tool permissions
  • Auto-update toggle for plugin marketplaces
  • 3x memory usage improvement for large conversations

⚠️ Breaking: Removed # shortcut for quick memory entry

v2.0.67 (2025-12-26) ⭐

  • ⭐ Thinking mode enabled by default for Opus 4.5
  • Thinking config moved to /config
  • Search in /permissions with / shortcut

v2.0.64 (2025-12-22) ⭐

  • ⭐ Instant auto-compacting
  • ⭐ Async agents and bash commands with wake-up messages
  • /stats with usage graphs, streaks, favorite model
  • Named sessions: /rename, /resume <name>
  • Support for .claude/rules/ directory
  • Image dimension metadata for coordinate mappings

v2.0.60 (2025-12-18) ⭐

  • ⭐ Background agents — Agents run while you work
  • --disable-slash-commands CLI flag
  • Model name in Co-Authored-By commits
  • /mcp enable|disable [server-name]

v2.0.51 (2025-12-10) ⭐ MAJOR

  • ⭐ Opus 4.5 released
  • ⭐ Claude Code for Desktop
  • Updated usage limits for Opus 4.5
  • Plan Mode builds more precise plans

v2.0.45 (2025-12-05) ⭐

  • ⭐ Microsoft Foundry support
  • PermissionRequest hook for auto-approve/deny
  • & prefix for background tasks to web

v2.0.28 (2025-11-18) ⭐

  • ⭐ Plan mode: introduced Plan subagent
  • Subagents: resume capability
  • Subagents: dynamic model selection
  • --max-budget-usd flag (SDK)
  • Git-based plugins branch/tag support (#branch)

v2.0.24 (2025-11-10)

  • Claude Code Web: Web → CLI teleport
  • Sandbox mode for BashTool (Linux & Mac)
  • Bedrock: awsAuthRefresh output display

Breaking Changes Summary

URLs

Version Change
v2.1.0, v2.1.7 OAuth/API Console: console.anthropic.com → platform.claude.com

Windows

Version Change
v2.0.58 Managed settings prefer C:\Program Files\ClaudeCode
v2.1.2 Deprecated C:\ProgramData\ClaudeCode path

SDK / Agent Tool

Version Change
v2.0.25 Removed legacy SDK entrypoint → @anthropic-ai/claude-agent-sdk
v2.1.0 Minimum zod peer dependency: ^4.0.0
v2.1.77 Agent tool no longer accepts resume parameter — use SendMessage({to: agentId}) instead

API Ecosystem

Date Feature
2026-01-29 Structured Outputs GA: output_config.format remplace output_format. Docs

Shortcuts

Version Change
v2.0.70 Removed # shortcut for quick memory entry

Security Fixes

Version Issue
v2.1.2 Command injection in bash command processing
v2.1.6 Shell line continuation permission bypass
v2.1.7 Wildcard permission rules compound commands
v2.1.38 Heredoc delimiter command smuggling prevention

Syntax

Version Change
v2.1.19 Indexed argument syntax changed: $ARGUMENTS.0 → $ARGUMENTS[0] (bracket syntax)

Milestone Features

Version Key Features
v2.1.69 InstructionsLoaded hook, 4 security fixes, 15+ memory fixes, Voice STT 20 languages
v2.1.68 ultrathink re-introduced, Opus 4.6 medium effort default, Opus 4/4.1 removed
v2.1.63 HTTP hooks, worktree config sharing, /simplify + /batch bundled commands
v2.1.32 Opus 4.6, Agent teams preview, Automatic memory
v2.1.18 Customizable keyboard shortcuts with /keybindings
v2.1.16 New task management system with dependency tracking
v2.1.0 Skill hot-reload, Shift+Enter OOTB, Vim motions, /plan command
v2.0.74 LSP tool for code intelligence
v2.0.72 Claude in Chrome (browser control)
v2.0.67 Thinking mode default for Opus 4.5
v2.0.64 Instant auto-compact, async agents, named sessions
v2.0.60 Background agents
v2.0.51 Opus 4.5, Claude Code for Desktop
v2.0.45 Microsoft Foundry, PermissionRequest hook
v2.0.28 Plan subagent, subagent resume/model selection
v2.0.24 Web teleport, Sandbox mode

Updating This Document

  1. Watch: github.com/anthropics/claude-code/releases
  2. Update: machine-readable/claude-code-releases.yaml (source of truth)
  3. Regenerate: Update this markdown accordingly
  4. Sync landing: Run ./scripts/check-landing-sync.sh

Last updated: 2026-03-05 | Back to main guide