claude-code-ultimate-guide/machine-readable/claude-code-releases.yaml

# Claude Code Official Releases (condensed)
# Source: github.com/anthropics/claude-code/CHANGELOG.md
# Purpose: Track Claude Code product releases for documentation sync
# Maintained: Manual updates when new releases are announced

latest: "2.1.41"
updated: "2026-02-13"

# ════════════════════════════════════════════════════════════════
# RELEASES (newest first, condensed highlights only)
# ════════════════════════════════════════════════════════════════
releases:

  # ─────────────────────────────────────────────────────────────
  # 2.1.x Series (January-February 2026)
  # ─────────────────────────────────────────────────────────────

  - version: "2.1.41"
    date: "2026-02-13"
    highlights:
      - "`claude auth login/status/logout` CLI subcommands"
      - "Windows ARM64 (win32-arm64) native binary support"
      - "`/rename` auto-generates session name from conversation context"
      - "Multiple stability fixes (FileReadTool FIFOs, background tasks, stale permissions)"
    breaking: []

  - version: "2.1.39"
    date: "2026-02-11"
    highlights:
      - "Guard against launching Claude Code inside another Claude Code session"
      - "Fixed Agent Teams wrong model for Bedrock/Vertex/Foundry"
      - "`speed` attribute in OTel events for fast mode visibility"
      - "Multiple stability fixes (rendering, session close, fatal errors)"
    breaking: []

  - version: "2.1.38"
    date: "2026-02-10"
    highlights:
      - "Fixed VS Code terminal scroll-to-top regression"
      - "Fixed Tab key queueing slash commands instead of autocompleting"
      - "Security: Heredoc delimiter parsing to prevent command smuggling"
      - "Security: Blocked writes to `.claude/skills` in sandbox mode"
    breaking: []

  - version: "2.1.37"
    date: "2026-02-08"
    highlights:
      - "Fixed /fast not immediately available after enabling /extra-usage"
    breaking: []

  - version: "2.1.36"
    date: "2026-02-08"
    highlights:
      - "⭐ Fast mode now available for Opus 4.6"
    breaking: []

  - version: "2.1.34"
    date: "2026-02-07"
    highlights:
      - "Fixed crash when agent teams setting changed between renders"
      - "Security fix: Sandbox-excluded commands could bypass Bash ask permission"
    breaking:
      - "Security fix: sandbox.excludedCommands / dangerouslyDisableSandbox bypass with autoAllowBashIfSandboxed"

  - version: "2.1.33"
    date: "2026-02-06"
    highlights:
      - "Agent teams fixes: tmux sessions, availability warnings"
      - "`TeammateIdle` and `TaskCompleted` hook events for multi-agent workflows"
      - "Agent frontmatter: `memory` field (user/project/local), `Task(agent_type)` sub-agent restriction"
      - "VSCode: Remote sessions, branch/message count in session picker"
    breaking: []

  - version: "2.1.32"
    date: "2026-02-05"
    highlights:
      - "⭐ Opus 4.6 is now available"
      - "⭐ Agent teams preview (CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1)"
      - "⭐ Automatic memory recording and recall"
      - "'Summarize from here' for partial conversation summarization"
    breaking: []

  - version: "2.1.31"
    date: "2026-02-03"
    highlights:
      - "Session resume hint on exit showing how to continue"
      - "Fixed PDF errors locking sessions & bash sandbox errors"
      - "LSP compatibility improvements & terminal rendering fixes"
    breaking: []

  - version: "2.1.30"
    date: "2026-02-02"
    highlights:
      - "`pages` parameter for Read tool PDFs (e.g., `pages: '1-5'`)"
      - "Pre-configured OAuth for MCP servers (Slack support)"
      - "⭐ `/debug` command for session troubleshooting"
      - "git log/show read-only flags support"
      - "Task tool metrics (tokens, duration, tool uses)"
    breaking: []

  - version: "2.1.29"
    date: "2026-01-31"
    highlights:
      - "Fixed startup performance with saved hook context"
      - "Improved session recovery speed for long-duration sessions"
    breaking: []

  - version: "2.1.27"
    date: "2026-01-29"
    highlights:
      - "`--from-pr` flag to resume sessions linked to GitHub PR number/URL"
      - "Sessions auto-linked to PRs when created via `gh pr create`"
      - "Windows: Fixed bash execution and console flashing issues"
      - "VSCode: Fixed OAuth token expiration (401 errors)"
    breaking: []

  - version: "2.1.25"
    date: "2026-01-30"
    highlights:
      - "Fixed beta header validation for Bedrock/Vertex gateway users"
    breaking: []

  - version: "2.1.23"
    date: "2026-01-29"
    highlights:
      - "Customizable spinner verbs setting (spinnerVerbs)"
      - "mTLS and corporate proxy connectivity fixes"
      - "Improved terminal rendering performance"
    breaking: []

  - version: "2.1.22"
    date: "2026-01-28"
    highlights:
      - "Improved task UI performance with virtualization"
      - "Vim selection and deletion fixes"
      - "LSP improvements: Kotlin support, UTF-16 ranges"
    breaking: []

  - version: "2.1.21"
    date: "2026-01-28"
    highlights:
      - "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"
    breaking: []

  - version: "2.1.20"
    date: "2026-01-27"
    highlights:
      - "TaskUpdate: status='deleted' for task removal"
      - "PR review status indicator (colored dot + link)"
    breaking: []

  - version: "2.1.19"
    date: "2026-01-25"
    highlights:
      - "New: CLAUDE_CODE_ENABLE_TASKS env var (set false for old task system)"
      - "New: Shorthand $0, $1 for arguments in custom commands"
      - "[VSCode] Session forking and rewind enabled for all users"
      - "Fixed: Multiple session resuming/naming issues with git worktrees"
    breaking:
      - "Indexed argument syntax changed: $ARGUMENTS.0 → $ARGUMENTS[0] (bracket syntax)"

  - version: "2.1.18"
    date: "2026-01-24"
    highlights:
      - "⭐ Customizable keyboard shortcuts with /keybindings command"
      - "Per-context keybindings, chord sequences, workflow personalization"
    breaking: []

  - version: "2.1.17"
    date: "2026-01-23"
    highlights:
      - "Fix: Crashes on processors without AVX instruction support"
    breaking: []

  - version: "2.1.16"
    date: "2026-01-22"
    highlights:
      - "⭐ New task management system with dependency tracking"
      - "[VSCode] Native plugin management support"
      - "[VSCode] OAuth users can browse/resume remote sessions"
      - "Fixed: OOM crashes when resuming sessions with heavy subagent usage"
    breaking: []

  - version: "2.1.15"
    date: "2026-01-22"
    highlights:
      - "⚠️ Deprecation notice for npm installations (use `claude install`)"
      - "UI rendering performance improved with React Compiler"
      - "Fixed: MCP stdio server timeout not killing child process"
    breaking:
      - "npm installations deprecated - migrate to native installer"

  - version: "2.1.14"
    date: "2026-01-21"
    highlights:
      - "History-based autocomplete in bash mode (! + Tab)"
      - "Search in installed plugins list"
      - "Git commit SHA pinning for plugins"
      - "Multiple fixes: context window, memory, autocomplete"
    breaking: []

  - version: "2.1.12"
    date: "2026-01-18"
    highlights:
      - "Bug fix: Message rendering"
    breaking: []

  - version: "2.1.11"
    date: "2026-01-17"
    highlights:
      - "Fix: Excessive MCP connection requests for HTTP/SSE transports"
    breaking: []

  - version: "2.1.10"
    date: "2026-01-17"
    highlights:
      - "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"
    breaking: []

  - version: "2.1.9"
    date: "2026-01-16"
    highlights:
      - "`auto:N` syntax for MCP tool search threshold"
      - "`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"
    breaking: []

  - version: "2.1.7"
    date: "2026-01-15"
    highlights:
      - "`showTurnDuration` setting to hide turn duration messages"
      - "MCP tool search auto mode enabled by default"
      - "Inline display of agent final response in task notifications"
    breaking:
      - "OAuth/API Console URLs: console.anthropic.com → platform.claude.com"
      - "Security fix: Wildcard permission rules could match compound commands"

  - version: "2.1.6"
    date: "2026-01-14"
    highlights:
      - "Search functionality in /config command"
      - "Date range filtering in /stats (r to cycle)"
      - "Auto-discovery of skills from nested .claude/skills directories"
      - "Updates section in /doctor showing auto-update channel"
    breaking:
      - "Security fix: Permission bypass via shell line continuation"

  - version: "2.1.5"
    date: "2026-01-13"
    highlights:
      - "`CLAUDE_CODE_TMPDIR` env var for custom temp directory"
    breaking: []

  - version: "2.1.4"
    date: "2026-01-12"
    highlights:
      - "`CLAUDE_CODE_DISABLE_BACKGROUND_TASKS` env var"
    breaking: []

  - version: "2.1.3"
    date: "2026-01-11"
    highlights:
      - "Merged slash commands and skills (simplified mental model)"
      - "Release channel toggle (stable/latest) in /config"
      - "/doctor warnings for unreachable permission rules"
    breaking: []

  - version: "2.1.2"
    date: "2026-01-10"
    highlights:
      - "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"

  - version: "2.1.0"
    date: "2026-01-08"
    highlights:
      - "⭐ MAJOR: Automatic skill hot-reload"
      - "⭐ MAJOR: Shift+Enter works OOTB (iTerm2, WezTerm, Ghostty, Kitty)"
      - "⭐ MAJOR: New Vim motions (;, y, p, text objects, >>, <<, J)"
      - "Unified Ctrl+B for backgrounding all tasks"
      - "/plan command shortcut"
      - "Slash command autocomplete anywhere in input"
      - "`language` setting for response language"
      - "Skills context: fork support"
      - "Hooks support in agent/skill frontmatter"
      - "MCP list_changed notifications support"
      - "/teleport and /remote-env commands"
      - "Tab support for disabling specific agents"
      - "--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 (December 2025 - January 2026)
  # ─────────────────────────────────────────────────────────────

  - version: "2.0.76"
    date: "2026-01-05"
    highlights:
      - "Fix: macOS code-sign warning with Claude in Chrome"
    breaking: []

  - version: "2.0.74"
    date: "2026-01-04"
    highlights:
      - "⭐ LSP (Language Server Protocol) tool for code intelligence"
      - "/terminal-setup for Kitty, Alacritty, Zed, Warp"
      - "Ctrl+T in /theme to toggle syntax highlighting"
      - "Grouped skills/agents by source in /context"
    breaking: []

  - version: "2.0.73"
    date: "2026-01-03"
    highlights:
      - "Clickable [Image #N] links"
      - "Alt-Y yank-pop to cycle kill ring history"
      - "Search filtering in plugin discover screen"
      - "[VSCode] Tab icon badges (permissions, unread)"
    breaking: []

  - version: "2.0.72"
    date: "2026-01-02"
    highlights:
      - "⭐ Claude in Chrome (Beta) - browser control from Claude Code"
      - "Reduced terminal flickering"
      - "QR code for mobile app"
      - "Thinking toggle: Tab → Alt+T"
    breaking: []

  - version: "2.0.71"
    date: "2026-01-01"
    highlights:
      - "/config toggle for prompt suggestions"
      - "/settings alias for /config"
      - "New Rust-based syntax highlighting engine"
    breaking: []

  - version: "2.0.70"
    date: "2025-12-30"
    highlights:
      - "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"

  - version: "2.0.68"
    date: "2025-12-28"
    highlights:
      - "IME support for Chinese, Japanese, Korean"
      - "Enterprise managed settings support"
      - "Improved plan mode exit UX"
    breaking: []

  - version: "2.0.67"
    date: "2025-12-26"
    highlights:
      - "⭐ Thinking mode enabled by default for Opus 4.5"
      - "Thinking config moved to /config"
      - "Search in /permissions with / shortcut"
    breaking: []

  - version: "2.0.65"
    date: "2025-12-24"
    highlights:
      - "Alt+P to switch models while writing prompt"
      - "Context window info in status line"
      - "`fileSuggestion` setting for custom @ search"
      - "CLAUDE_CODE_SHELL env var"
    breaking: []

  - version: "2.0.64"
    date: "2025-12-22"
    highlights:
      - "⭐ 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"
    breaking:
      - "Unshipped AgentOutputTool/BashOutputTool → TaskOutputTool"

  - version: "2.0.62"
    date: "2025-12-20"
    highlights:
      - "`attribution` setting for commit/PR bylines"
      - "(Recommended) indicator in multiple-choice questions"
    breaking:
      - "Deprecated: includeCoAuthoredBy (use attribution)"

  - version: "2.0.60"
    date: "2025-12-18"
    highlights:
      - "⭐ Background agents (work while you work)"
      - "--disable-slash-commands CLI flag"
      - "Model name in Co-Authored-By commits"
      - "/mcp enable|disable [server-name]"
    breaking: []

  - version: "2.0.58"
    date: "2025-12-16"
    highlights:
      - "⭐ Opus 4.5 available for Pro users"
    breaking:
      - "[Windows] Managed settings prefer C:\\Program Files\\ClaudeCode"

  - version: "2.0.57"
    date: "2025-12-15"
    highlights:
      - "Feedback input when rejecting plans"
      - "[VSCode] Streaming message support"
    breaking: []

  - version: "2.0.55"
    date: "2025-12-13"
    highlights:
      - "Improved AskUserQuestion auto-submit"
      - "Better fuzzy matching for @ file suggestions"
    breaking:
      - "Proxy DNS opt-in: CLAUDE_CODE_PROXY_RESOLVES_HOSTS=true"

  - version: "2.0.51"
    date: "2025-12-10"
    highlights:
      - "⭐ MAJOR: Opus 4.5 released"
      - "⭐ MAJOR: Claude Code for Desktop"
      - "Updated usage limits for Opus 4.5"
      - "Plan Mode builds more precise plans"
    breaking: []

  - version: "2.0.45"
    date: "2025-12-05"
    highlights:
      - "⭐ Microsoft Foundry support"
      - "PermissionRequest hook for auto-approve/deny"
      - "& prefix for background tasks to web"
    breaking: []

  - version: "2.0.43"
    date: "2025-12-03"
    highlights:
      - "`permissionMode` field for custom agents"
      - "`skills` frontmatter for auto-loading subagent skills"
      - "SubagentStart hook event"
    breaking: []

  - version: "2.0.41"
    date: "2025-12-01"
    highlights:
      - "Model parameter for prompt-based stop hooks"
      - "Plugins: sharing and installing output styles"
      - "Allow more safe git commands without approval"
      - "Teleporting from web auto-sets upstream branch"
    breaking: []

  - version: "2.0.37"
    date: "2025-11-28"
    highlights:
      - "Matcher values for Notification hook events"
      - "Output Styles: keep-coding-instructions option"
    breaking: []

  - version: "2.0.35"
    date: "2025-11-26"
    highlights:
      - "Improved fuzzy search for commands"
      - "CLAUDE_CODE_EXIT_AFTER_STOP_DELAY env var"
    breaking:
      - "Migrated ignorePatterns to deny permissions"

  - version: "2.0.32"
    date: "2025-11-23"
    highlights:
      - "Output styles un-deprecated (community feedback)"
      - "`companyAnnouncements` setting"
    breaking: []

  - version: "2.0.30"
    date: "2025-11-20"
    highlights:
      - "`allowUnsandboxedCommands` sandbox setting"
      - "`disallowedTools` for custom agent definitions"
      - "Prompt-based stop hooks"
      - "SSE MCP servers on native build"
    breaking:
      - "Deprecated: Output styles (later un-deprecated in 2.0.32)"
      - "Removed: Custom ripgrep configuration"

  - version: "2.0.28"
    date: "2025-11-18"
    highlights:
      - "⭐ Plan mode: introduced Plan subagent"
      - "Subagents: resume capability"
      - "Subagents: dynamic model selection"
      - "--max-budget-usd flag (SDK)"
      - "Git-based plugins branch/tag support (#branch)"
    breaking: []

  - version: "2.0.27"
    date: "2025-11-15"
    highlights:
      - "New UI for permission prompts"
      - "Branch filtering and search in session resume"
    breaking: []

  - version: "2.0.25"
    date: "2025-11-12"
    highlights: []
    breaking:
      - "Removed legacy SDK entrypoint → @anthropic-ai/claude-agent-sdk"

  - version: "2.0.24"
    date: "2025-11-10"
    highlights:
      - "Claude Code Web: Web → CLI teleport"
      - "Sandbox mode for BashTool (Linux & Mac)"
      - "Bedrock: awsAuthRefresh output display"
    breaking: []

# ════════════════════════════════════════════════════════════════
# SUMMARY - Key Breaking Changes by Area
# ════════════════════════════════════════════════════════════════
breaking_summary:
  urls:
    - "OAuth/API Console: console.anthropic.com → platform.claude.com (v2.1.0, v2.1.7)"
  windows:
    - "Managed settings: C:\\ProgramData\\ClaudeCode → C:\\Program Files\\ClaudeCode (v2.0.58, deprecated v2.1.2)"
  sdk:
    - "Removed legacy SDK entrypoint → @anthropic-ai/claude-agent-sdk (v2.0.25)"
    - "Minimum zod peer dependency: ^4.0.0 (v2.1.0)"
  shortcuts:
    - "Removed # shortcut for quick memory (v2.0.70)"
  security:
    - "Command injection fix in bash processing (v2.1.2)"
    - "Wildcard permission rules compound commands fix (v2.1.7)"
    - "Shell line continuation permission bypass fix (v2.1.6)"
    - "Sandbox-excluded commands bypass with autoAllowBashIfSandboxed (v2.1.34)"
    - "Heredoc delimiter command smuggling prevention (v2.1.38)"
  installation:
    - "npm installations deprecated - use native installer (v2.1.15)"
  behavior:
    - "ultrathink/think keywords now cosmetic only — thinking default with Opus 4.5 (v2.0.67)"
  syntax:
    - "Indexed argument syntax changed: $ARGUMENTS.0 → $ARGUMENTS[0] (v2.1.19)"

# ════════════════════════════════════════════════════════════════
# MILESTONE FEATURES (quick reference)
# ════════════════════════════════════════════════════════════════
milestones:
  "2.1.36": "Fast mode for Opus 4.6"
  "2.1.32": "Opus 4.6, Agent teams preview, Automatic memory"
  "2.1.18": "Customizable keyboard shortcuts with /keybindings"
  "2.1.16": "New task management system with dependency tracking"
  "2.1.0": "Skill hot-reload, Shift+Enter OOTB, Vim motions, /plan command"
  "2.0.74": "LSP tool for code intelligence"
  "2.0.72": "Claude in Chrome (browser control)"
  "2.0.67": "Thinking mode default for Opus 4.5"
  "2.0.64": "Instant auto-compact, async agents, named sessions"
  "2.0.60": "Background agents"
  "2.0.51": "Opus 4.5, Claude Code for Desktop"
  "2.0.45": "Microsoft Foundry, PermissionRequest hook"
  "2.0.28": "Plan subagent, subagent resume/model selection"
  "2.0.24": "Web teleport, Sandbox mode"