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Claude Code Updates & Release Notes

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Claude Code von Anthropic

Claude Code 2.1.19: Argument-Kurzschreibweise und Fixes

Neu sind die Kurzschreibweise $0, $1 usw. für Argumente in Custom Commands und die Umgebungsvariable CLAUDE_CODE_ENABLE_TASKS; die Syntax wechselt zu $ARGUMENTS[0], Skills ohne zusätzliche Rechte laufen ohne Freigabe, und zahlreiche Fehler (AVX-Abstürze, hängende Prozesse, /rename und /tag) wurden behoben.

  • Added env var CLAUDE_CODE_ENABLE_TASKS, set to false to keep the old system temporarily
  • Added shorthand $0, $1, etc. for accessing individual arguments in custom commands
  • Fixed crashes on processors without AVX instruction support
  • Fixed dangling Claude Code processes when terminal is closed by catching EIO errors from process.exit() and using SIGKILL as fallback
  • Fixed /rename and /tag not updating the correct session when resuming from a different directory (e.g., git worktrees)
  • Fixed resuming sessions by custom title not working when run from a different directory
  • Fixed pasted text content being lost when using prompt stash (Ctrl+S) and restore
  • Fixed agent list displaying "Sonnet (default)" instead of "Inherit (default)" for agents without an explicit model setting
  • Fixed backgrounded hook commands not returning early, potentially causing the session to wait on a process that was intentionally backgrounded
  • Fixed file write preview omitting empty lines
  • Changed skills without additional permissions or hooks to be allowed without requiring approval
  • Changed indexed argument syntax from $ARGUMENTS.0 to $ARGUMENTS[0] (bracket syntax)
  • [SDK] Added replay of queued_command attachment messages as SDKUserMessageReplay events when replayUserMessages is enabled
  • [VSCode] Enabled session forking and rewind functionality for all users

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Claude Code 2.1.16: neues Task-Management

Ein neues Task-Management-System mit Abhängigkeitsverfolgung wurde eingeführt, VS Code erhält native Plugin-Verwaltung und das Fortsetzen von Remote-Sitzungen für OAuth-Nutzer, und mehrere Fehler (Speicherabstürze, Kontextwarnung nach /compact, Sitzungstitel-Sprache) wurden behoben.

  • Added new task management system, including new capabilities like dependency tracking
  • [VSCode] Added native plugin management support
  • [VSCode] Added ability for OAuth users to browse and resume remote Claude sessions from the Sessions dialog
  • Fixed out-of-memory crashes when resuming sessions with heavy subagent usage
  • Fixed an issue where the "context remaining" warning was not hidden after running /compact
  • Fixed session titles on the resume screen not respecting the user's language setting
  • [IDE] Fixed a race condition on Windows where the Claude Code sidebar view container would not appear on start

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Claude Code 2.1.15: Hinweis zur npm-Abkündigung

Version 2.1.15 zeigt eine Abkündigungsmeldung für npm-Installationen an, verbessert die UI-Leistung mit React Compiler und behebt die weiterhin angezeigte Auto-Compact-Warnung nach /compact sowie UI-Freezes durch nicht beendete MCP-stdio-Prozesse.

  • Added deprecation notification for npm installations - run claude install or see https://code.claude.com/docs/en/setup for more options
  • Improved UI rendering performance with React Compiler
  • Fixed the "Context left until auto-compact" warning not disappearing after running /compact
  • Fixed MCP stdio server timeout not killing child process, which could cause UI freezes

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Claude Code 2.1.14: Bash-Autovervollständigung und Plugin-Suche

Version 2.1.14 ergänzt verlaufsbasierte Autovervollständigung im Bash-Modus, eine Suche in installierten Plugins und das Festlegen von Plugins auf bestimmte Git-Commit-SHAs und behebt zahlreiche Fehler, darunter zu frühes Blockieren bei ~65 % Kontextnutzung, Abstürze mit parallelen Subagents und einen Speicherleck.

  • Added history-based autocomplete in bash mode (!) - type a partial command and press Tab to complete from your bash command history
  • Added search to installed plugins list - type to filter by name or description
  • Added support for pinning plugins to specific git commit SHAs, allowing marketplace entries to install exact versions
  • Fixed a regression where the context window blocking limit was calculated too aggressively, blocking users at ~65% context usage instead of the intended ~98%
  • Fixed memory issues that could cause crashes when running parallel subagents
  • Fixed memory leak in long-running sessions where stream resources were not cleaned up after shell commands completed
  • Fixed @ symbol incorrectly triggering file autocomplete suggestions in bash mode
  • Fixed @-mention menu folder click behavior to navigate into directories instead of selecting them
  • Fixed /feedback command generating invalid GitHub issue URLs when description is very long
  • Fixed /context command to show the same token count and percentage as the status line in verbose mode
  • Fixed an issue where /config, /context, /model, and /todos command overlays could close unexpectedly
  • Fixed slash command autocomplete selecting wrong command when typing similar commands (e.g., /context vs /compact)
  • Fixed inconsistent back navigation in plugin marketplace when only one marketplace is configured …

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Claude Code 2.1.11

Version 2.1.11 behebt übermäßig viele MCP-Verbindungsanfragen bei HTTP/SSE-Transporten.

  • Fixed excessive MCP connection requests for HTTP/SSE transports

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Claude Code 2.1.9: Neue Einstellungen und Hook-Erweiterungen

Version 2.1.9 ergänzt die Syntax auto:N für die MCP-Tool-Suche, die Einstellung plansDirectory, additionalContext für PreToolUse-Hooks und ${CLAUDE_SESSION_ID} für Skills und behebt mehrere Fehler bei langen Sessions, MCP-Reconnects und Ctrl+Z.

  • Added auto:N syntax for configuring the MCP tool search auto-enable threshold, where N is the context window percentage (0-100)
  • Added plansDirectory setting to customize where plan files are stored
  • Added external editor support (Ctrl+G) in AskUserQuestion "Other" input field
  • Added session URL attribution to commits and PRs created from web sessions
  • Added support for PreToolUse hooks to return additionalContext to the model
  • Added ${CLAUDE_SESSION_ID} string substitution for skills to access the current session ID
  • Fixed long sessions with parallel tool calls failing with an API error about orphan tool_result blocks
  • Fixed MCP server reconnection hanging when cached connection promise never resolves
  • Fixed Ctrl+Z suspend not working in terminals using Kitty keyboard protocol (Ghostty, iTerm2, kitty, WezTerm)

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Claude Code 2.1.7: Sicherheitsfix für Wildcard-Berechtigungen

Version 2.1.7 behebt eine Sicherheitslücke, bei der Wildcard-Berechtigungsregeln zusammengesetzte Shell-Befehle erfassen konnten, fügt die Einstellung showTurnDuration und Feedback bei Berechtigungsabfragen hinzu und behebt viele Fehler unter anderem unter Windows.

  • Added showTurnDuration setting to hide turn duration messages (e.g., "Cooked for 1m 6s")
  • Added ability to provide feedback when accepting permission prompts
  • Added inline display of agent's final response in task notifications, making it easier to see results without reading the full transcript file
  • Fixed security vulnerability where wildcard permission rules could match compound commands containing shell operators
  • Fixed false "file modified" errors on Windows when cloud sync tools, antivirus scanners, or Git touch file timestamps without changing content
  • Fixed orphaned tool_result errors when sibling tools fail during streaming execution
  • Fixed context window blocking limit being calculated using the full context window instead of the effective context window (which reserves space for max output tokens)
  • Fixed spinner briefly flashing when running local slash commands like /model or /theme
  • Fixed terminal title animation jitter by using fixed-width braille characters
  • Fixed plugins with git submodules not being fully initialized when installed
  • Fixed bash commands failing on Windows when temp directory paths contained characters like t or n that were misinterpreted as escape sequences
  • Improved typing responsiveness by reducing memory allocation overhead in terminal rendering …

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Claude Code 2.1.6: Suche in /config und Zeitraumfilter für /stats

Version 2.1.6 fügt eine Suche in /config, einen Updates-Bereich in /doctor, Zeitraumfilter in /stats und die automatische Erkennung verschachtelter Skill-Verzeichnisse hinzu und behebt unter anderem einen Berechtigungs-Bypass über Shell-Zeilenfortsetzung.

  • Added search functionality to /config command for quickly filtering settings
  • Added Updates section to /doctor showing auto-update channel and available npm versions (stable/latest)
  • Added date range filtering to /stats command - press r to cycle between Last 7 days, Last 30 days, and All time
  • Added automatic discovery of skills from nested .claude/skills directories when working with files in subdirectories
  • Added context_window.used_percentage and context_window.remaining_percentage fields to status line input for easier context window display
  • Added an error display when the editor fails during Ctrl+G
  • Fixed permission bypass via shell line continuation that could allow blocked commands to execute
  • Fixed false "File has been unexpectedly modified" errors when file watchers touch files without changing content
  • Fixed text styling (bold, colors) getting progressively misaligned in multi-line responses
  • Fixed the feedback panel closing unexpectedly when typing 'n' in the description field
  • Fixed rate limit warning appearing at low usage after weekly reset (now requires 70% usage)
  • Fixed rate limit options menu incorrectly auto-opening when resuming a previous session
  • Fixed numpad keys outputting escape sequences instead of characters in Kitty keyboard protocol terminals
  • Fixed Option+Return not inserting newlines in Kitty keyboard protocol terminals …

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Claude Code 2.1.5: Umgebungsvariable CLAUDE_CODE_TMPDIR

Version 2.1.5 fügt die Umgebungsvariable CLAUDE_CODE_TMPDIR hinzu, mit der das Temp-Verzeichnis für interne temporäre Dateien überschrieben werden kann.

  • Added CLAUDE_CODE_TMPDIR environment variable to override the temp directory used for internal temp files, useful for environments with custom temp directory requirements

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Claude Code 2.1.4: Hintergrundaufgaben deaktivierbar

Version 2.1.4 ergänzt die Umgebungsvariable CLAUDE_CODE_DISABLE_BACKGROUND_TASKS, die alle Hintergrundaufgaben deaktiviert, und behebt das Abrufen der Einstellung "Help improve Claude" bei veraltetem OAuth-Token.

  • Added CLAUDE_CODE_DISABLE_BACKGROUND_TASKS environment variable to disable all background task functionality including auto-backgrounding and the Ctrl+B shortcut
  • Fixed "Help improve Claude" setting fetch to refresh OAuth and retry when it fails due to a stale OAuth token

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Claude Code 2.1.3: Slash-Commands und Skills zusammengeführt

Version 2.1.3 führt Slash-Commands und Skills zusammen, ergänzt einen Release-Channel-Schalter in /config und Warnungen für unerreichbare Berechtigungsregeln, erhöht das Hook-Timeout von 60 Sekunden auf 10 Minuten und behebt mehrere Fehler.

  • Merged slash commands and skills, simplifying the mental model with no change in behavior
  • Added release channel (stable or latest) toggle to /config
  • Added detection and warnings for unreachable permission rules, with warnings in /doctor and after saving rules that include the source of each rule and actionable fix guidance
  • Fixed plan files persisting across /clear commands, now ensuring a fresh plan file is used after clearing a conversation
  • Fixed false skill duplicate detection on filesystems with large inodes (e.g., ExFAT) by using 64-bit precision for inode values
  • Fixed mismatch between background task count in status bar and items shown in tasks dialog
  • Fixed sub-agents using the wrong model during conversation compaction
  • Fixed web search in sub-agents using incorrect model
  • Fixed trust dialog acceptance when running from the home directory not enabling trust-requiring features like hooks during the session
  • Improved terminal rendering stability by preventing uncontrolled writes from corrupting cursor state
  • Improved slash command suggestion readability by truncating long descriptions to 2 lines
  • Changed tool hook execution timeout from 60 seconds to 10 minutes
  • [VSCode] Added clickable destination selector for permission requests, allowing you to choose where settings are saved (this project, all projects, shared with team, or session only)

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Claude Code 2.1.2: Sicherheitsfix und winget-Unterstützung

Version 2.1.2 behebt eine Command-Injection-Schwachstelle bei der Bash-Befehlsverarbeitung, unterstützt winget-Installationen, ergänzt klickbare Dateipfad-Links per OSC 8 und behebt mehrere Speicher- und Absturzprobleme.

  • Added source path metadata to images dragged onto the terminal, helping Claude understand where images originated
  • Added clickable hyperlinks for file paths in tool output in terminals that support OSC 8 (like iTerm)
  • Added support for Windows Package Manager (winget) installations with automatic detection and update instructions
  • Added Shift+Tab keyboard shortcut in plan mode to quickly select "auto-accept edits" option
  • Added FORCE_AUTOUPDATE_PLUGINS environment variable to allow plugin autoupdate even when the main auto-updater is disabled
  • Added agent_type to SessionStart hook input, populated if --agent is specified
  • Fixed a command injection vulnerability in bash command processing where malformed input could execute arbitrary commands
  • Fixed a memory leak where tree-sitter parse trees were not being freed, causing WASM memory to grow unbounded over long sessions
  • Fixed binary files (images, PDFs, etc.) being accidentally included in memory when using @include directives in CLAUDE.md files
  • Fixed updates incorrectly claiming another installation is in progress
  • Fixed crash when socket files exist in watched directories (defense-in-depth for EOPNOTSUPP errors)
  • Fixed remote session URL and teleport being broken when using /tasks command
  • Fixed MCP tool names being exposed in analytics events by sanitizing user-specific server configurations …

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Claude Code 2.0.76: macOS-Code-Sign-Warnung behoben

Version 2.0.76 behebt eine macOS-Code-Sign-Warnung bei der Nutzung der Claude-in-Chrome-Integration.

  • Fixed issue with macOS code-sign warning when using Claude in Chrome integration

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Claude Code 2.0.74: LSP-Tool für Code Intelligence

Version 2.0.74 fügt ein LSP-Tool für Funktionen wie Go-to-Definition, Referenzsuche und Hover-Dokumentation hinzu, erweitert /terminal-setup um Kitty, Alacritty, Zed und Warp, verbessert die /context-Darstellung und behebt mehrere Fehler.

  • Added LSP (Language Server Protocol) tool for code intelligence features like go-to-definition, find references, and hover documentation
  • Added /terminal-setup support for Kitty, Alacritty, Zed, and Warp terminals
  • Added ctrl+t shortcut in /theme to toggle syntax highlighting on/off
  • Added syntax highlighting info to theme picker
  • Added guidance for macOS users when Alt shortcuts fail due to terminal configuration
  • Fixed skill allowed-tools not being applied to tools invoked by the skill
  • Fixed Opus 4.5 tip incorrectly showing when user was already using Opus
  • Fixed a potential crash when syntax highlighting isn't initialized correctly
  • Fixed visual bug in /plugins discover where list selection indicator showed while search box was focused
  • Fixed macOS keyboard shortcuts to display 'opt' instead of 'alt'
  • Improved /context command visualization with grouped skills and agents by source, slash commands, and sorted token count
  • [Windows] Fixed issue with improper rendering
  • [VSCode] Added gift tag pictogram for year-end promotion message

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Claude Code 2.0.73: Klickbare Bildlinks und Plugin-Suche

Version 2.0.73 ergänzt klickbare [Image #N]-Links, alt-y Yank-Pop, eine Suche im Plugin-Discover-Screen und eigene Session-IDs beim Forken von Sessions, verbessert den Theme-Picker und vereinheitlicht die Suche über mehrere Screens.

  • Added clickable [Image #N] links that open attached images in the default viewer
  • Added alt-y yank-pop to cycle through kill ring history after ctrl-y yank
  • Added search filtering to the plugin discover screen (type to filter by name, description, or marketplace)
  • Added support for custom session IDs when forking sessions with --session-id combined with --resume or --continue and --fork-session
  • Fixed slow input history cycling and race condition that could overwrite text after message submission
  • Improved /theme command to open theme picker directly
  • Improved theme picker UI
  • Improved search UX across resume session, permissions, and plugins screens with a unified SearchBox component
  • [VSCode] Added tab icon badges showing pending permissions (blue) and unread completions (orange)

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Claude Code 2.1.243

Neu sind eine Loops-Aufschlüsselung in /usage, die Einstellungen modelPicker, promptCacheTtl, subagentPromptCacheTtl und modelPricing, eine schlüssellose Console-Anmeldung unter /login, eine Skipped sources-Zeile in /status sowie managed-Markierungen in /mcp und /plugins.

  • Added a Loops breakdown to /usage: per-loop run count, total tokens, tokens per run, and last run, so runaway or chatty /loop tasks are easy to spot
  • Added modelPicker setting: curate the /model picker with an ordered, labeled list of models (any id spelling, including Vertex/Bedrock ids), appended to or replacing the built-in lineup
  • Added promptCacheTtl and subagentPromptCacheTtl settings so API-key and cloud-provider users can keep a 1-hour prompt cache on the main conversation while subagents stay at 5 minutes
  • Added modelPricing managed setting so an organization's contracted per-model rates and discount multiplier are used for /cost, the status line, and telemetry cost figures instead of list price
  • Added a keyless sign-in under /login → Anthropic Console: "Sign in with your Console account" (recommended) alongside creating an API key, so organizations that don't allow API keys can sign in
  • Added a Skipped sources line to /status that lists managed settings sources (for example managed-settings.json) present but not applied because a higher-precedence managed source is active
  • Added a managed marker in /mcp and /plugins on claude.ai connectors whose authentication is managed by your organization
  • Added a tip pointing claude.ai users who haven't connected GitHub for Claude Code on the web to /web-setup …

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Claude Code 2.1.120: Windows ohne Git Bash, claude ultrareview

Version 2.1.120 macht Git for Windows überflüssig (PowerShell als Fallback), ergänzt den Befehl claude ultrareview und ${CLAUDE_EFFORT} in Skills und behebt Fehler bei MCP-Aufrufen, /rewind und Terminal-Scrollback.

  • Windows: Git for Windows (Git Bash) is no longer required — when absent, Claude Code uses PowerShell as the shell tool
  • Added claude ultrareview [target] subcommand to run /ultrareview non-interactively from CI or scripts — prints findings to stdout (--json for raw output) and exits 0 on completion or 1 on failure
  • Skills can now reference the current effort level with ${CLAUDE_EFFORT} in their content
  • Set AI_AGENT environment variable for subprocesses so gh can attribute traffic to Claude Code
  • Spinner tips that recommend installing the desktop app or creating skills/agents are now hidden when you already have them
  • Show a "use PgUp/PgDn to scroll" hint when the terminal sends arrow keys instead of scroll events
  • Faster session start when you have many claude.ai connectors configured but not authorized
  • The auto mode denial message now links to the configuration docs
  • claude plugin validate now accepts $schema, version, and description at the top level of marketplace.json and $schema in plugin.json
  • Auto-compact in auto mode now displays auto (lowercase, no token count) instead of a misleading token value
  • Fixed pressing Esc during a stdio MCP tool call closing the entire server connection (regression in 2.1.105)
  • Fixed /rewind and other interactive overlays not responding to keyboard input after launching with claude --resume
  • Fixed terminal scrollback duplication in non-fullscreen mode (resize, dialog dismiss, long sessions) …

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Claude Code 2.1.46: claude.ai MCP-Connectors

claude.ai MCP-Connectors können nun in Claude Code verwendet werden, und verwaiste Prozesse nach Terminal-Trennung unter macOS wurden behoben.

  • Fixed orphaned CC processes after terminal disconnect on macOS
  • Added support for using claude.ai MCP connectors in Claude Code

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