Claude Code v1.0.34 → v2.1.310: what changed

369 releases shipped between v1.0.34 (June 24, 2025) and v2.1.310 (October 23, 2026).

Changelog entries in this range

• v1.0.35 — June 25, 2025: - Added support for MCP OAuth Authori
• v1.0.36 — June 27, 2025: - Web search now takes today's date into context - Fixed a bug where stdio MCP servers were not terminating properly on exit
• v1.0.37 — June 27, 2025: - Remove ability to set Proxy-Authori
• v1.0.38 — June 30, 2025: - Released hooks. Special thanks to community input in https://github.com/anthropics/claude-code/issues/712. Docs: https://code.claude.com/docs/en/hooks
• v1.0.39 — July 1, 2025: - New Active Time metric in OpenTelemetry logging
• v1.0.40 — July 1, 2025: - Fixed a bug causing API connection errors with UNABLETOGETISSUERCERTLOCALLY if NODEEXTRACACERTS was set
• v1.0.41 — July 2, 2025: - Hooks: Split Stop hook triggering into Stop and SubagentStop - Hooks: Enabled optional timeout configuration for each command
• v1.0.42 — July 3, 2025: - Added tilde (~) expansion support to /add-dir command
• v1.0.43 — July 3, 2025: - Fixed a bug where the theme selector was saving excessively - Hooks: Added EPIPE system error handling
• v1.0.44 — July 7, 2025: - New /export command lets you quickly export a conversation for sharing - MCP: resourcelink tool results are now supported
• v1.0.45 — July 8, 2025: - Redesigned Search (Grep) tool with new tool input parameters and features - Disabled IDE diffs for notebook files, fixing "Timeout waiting after 1000ms" error
• v1.0.48 — July 10, 2025: - Fixed a bug in v1.0.45 where the app would sometimes free
• v1.0.51 — July 11, 2025: - Added support for native Windows (requires Git for Windows) - Added support for Bedrock API keys through environment variable AWSBEARERTOKENBEDROCK
• v1.0.52 — July 15, 2025: - Added support for MCP server instructions
• v1.0.53 — July 15, 2025: - Updated @-mention file truncation from 100 lines to 2000 lines - Add helper script settings for AWS token refresh: awsAuthRefresh (for foreground operations l
• v1.0.54 — July 16, 2025: - Hooks: Added UserPromptSubmit hook and the current working directory to hook inputs - Custom slash commands: Added argument-hint to frontmatter
• v1.0.55 — July 17, 2025: - Clarified knowledge cutoff for Opus 4 and Sonnet 4 models - Windows: fixed Ctrl+Z crash
• v1.0.56 — July 18, 2025: - Windows: Enabled shift+tab for mode switching on versions of Node.js that support terminal VT mode - Fixes for WSL IDE detection
• v1.0.57 — July 21, 2025: - Added support for specifying a model in slash commands - Improved permission messages to help Claude understand allowed tools
• v1.0.58 — July 22, 2025: - Added support for reading PDFs - MCP: Improved server health status display in 'claude mcp list'
• v1.0.59 — July 23, 2025: - SDK: Added tool confirmation support with canUseTool callback - SDK: Allow specifying env for spawned process
• v1.0.60 — July 24, 2025: - You can now create custom subagents for speciali
• v1.0.61 — July 25, 2025: - Transcript mode (Ctrl+R): Changed Esc to exit transcript mode rather than interrupt - Settings: Added --settings flag to load settings from a JSON file
• v1.0.62 — July 28, 2025: - Added @-mention support with typeahead for custom agents. @<your-custom-agent> to invoke it - Hooks: Added SessionStart hook for new session initiali
• v1.0.63 — July 29, 2025: - Windows: Fixed file search, @agent mentions, and custom slash commands functionality
• v1.0.64 — July 30, 2025: - Agents: Added model customi
• v1.0.65 — July 31, 2025: - IDE: Fixed connection stability issues and error handling for diagnostics - Windows: Fixed shell environment setup for users without .bashrc files
• v1.0.68 — August 4, 2025: - Fix incorrect model names being used for certain commands like /pr-comments - Windows: improve permissions checks for allow / deny tools and project trust. Th
• v1.0.69 — August 5, 2025: - Upgraded Opus to version 4.1
• v1.0.70 — August 6, 2025: - Performance: Optimi
• v1.0.71 — August 7, 2025: - Background commands: (Ctrl-b) to run any Bash command in the background so Claude can keep working (great for dev servers, tailing logs, etc.) - Customi
• v1.0.72 — August 8, 2025: - Ask permissions: have Claude Code always ask for confirmation to use specific tools with /permissions
• v1.0.73 — August 11, 2025: - MCP: Support multiple config files with --mcp-config file1.json file2.json - MCP: Press Esc to cancel OAuth authentication flows
• v1.0.77 — August 12, 2025: - Bash tool: Fix heredoc and multiline string escaping, improve stderr redirection handling - SDK: Add session support and permission denial tracking
• v1.0.80 — August 13, 2025: - UI improvements: Fix text contrast for custom subagent colors and spinner rendering issues
• v1.0.81 — August 14, 2025: - Released output styles, including new built-in educational output styles "Explanatory" and "Learning". Docs: https://code.claude.com/docs/en/output-styles - A
• v1.0.82 — August 15, 2025: - SDK: Add request cancellation support - SDK: New additionalDirectories option to search custom paths, improved slash command processing
• v1.0.83 — August 15, 2025: - @-mention: Support files with spaces in path - New shimmering spinner
• v1.0.84 — August 18, 2025: - Fix tooluse/toolresult id mismatch error when network is unstable - Fix Claude sometimes ignoring real-time steering when wrapping up a task
• v1.0.85 — August 19, 2025: - Status line input now includes session cost info - Hooks: Introduced SessionEnd hook
• v1.0.86 — August 20, 2025: - Added /context to help users self-serve debug context issues - SDK: Added UUID support for all SDK messages
• v1.0.88 — August 22, 2025: - Fixed issue causing "OAuth authentication is currently not supported" - Status line input now includes exceeds200ktokens
• v1.0.90 — August 24, 2025: - Settings file changes take effect immediately - no restart required
• v1.0.93 — August 26, 2025: - Windows: Add alt + v shortcut for pasting images from clipboard - Support NOPROXY environment variable to bypass proxy for specified hostnames and IPs
• v1.0.94 — August 27, 2025: - Vertex: add support for global endpoints for supported models - /memory command now allows direct editing of all imported memory files
• v1.0.106 — September 4, 2025: - Windows: Fixed path permission matching to consistently use POSIX format (e.g., Read(//c/Users/...))
• v1.0.109 — September 8, 2025: - SDK: Added partial message streaming support via --include-partial-messages CLI flag
• v1.0.110 — September 9, 2025: - /terminal-setup command now supports We
• v1.0.111 — September 10, 2025: - /model now validates provided model names - Fixed Bash tool crashes caused by malformed shell syntax parsing
• v1.0.112 — September 12, 2025: - Transcript mode (Ctrl+R): Added the model used to generate each assistant message - Addressed issue where some Claude Max users were incorrectly recogni
• v1.0.113 — September 13, 2025: - Deprecated piped input in interactive mode - Move Ctrl+R keybinding for toggling transcript to Ctrl+O
• v1.0.115 — September 16, 2025: - Improve thinking mode display with enhanced visual effects - Type /t to temporarily disable thinking mode in your prompt
• v1.0.117 — September 16, 2025: - Add Ctrl-R history search to recall previous commands like bash/
• v1.0.119 — September 18, 2025: - Fix Windows issue where process visually free
• v1.0.120 — September 19, 2025: - Fix input lag during typing, especially noticeable with large prompts - Improved VSCode extension command registry and sessions dialog user experience
• v1.0.123 — September 23, 2025: - Bash permission rules now support output redirections when matching (e.g., Bash(python:) matches python script.py > output.txt) - Fixed thinking mode triggeri
• v1.0.124 — September 25, 2025: - Set CLAUDEBASHNOLOGIN environment variable to 1 or true to to skip login shell for BashTool - Fix Bedrock and Vertex environment variables evaluating all stri
• v1.0.126 — September 26, 2025: - Enable /context command for Bedrock and Vertex - Add mTLS support for HTTP-based OpenTelemetry exporters
• v2.0.0 — September 29, 2025: - New native VS Code extension - Fresh coat of paint throughout the whole app
• v2.0.1 — September 30, 2025: - Skip Sonnet 4.5 default model setting change for Bedrock and Vertex - Various bug fixes and presentation improvements
• v2.0.5 — October 2, 2025: - IDE: Fix IME unintended message submission with Enter and Tab - IDE: Add "Open in Terminal" link in login screen
• v2.0.8 — October 4, 2025: - Update Bedrock default Sonnet model to global.anthropic.claude-sonnet-4-5-20250929-v1:0 - IDE: Add drag-and-drop support for files and folders in chat
• v2.0.9 — October 6, 2025: - Fix regression where bash backgrounding stopped working
• v2.0.10 — October 7, 2025: - Rewrote terminal renderer for buttery smooth UI - Enable/disable MCP servers by @mentioning, or in /mcp
• v2.0.11 — October 8, 2025: - Reduced system prompt si
• v2.0.12 — October 9, 2025: - Plugin System Released: Extend Claude Code with custom commands, agents, hooks, and MCP servers from marketplaces - /plugin install, /plugin enable/disable, /
• v2.0.13 — October 9, 2025: - Fixed /plugin not working on native build
• v2.0.14 — October 10, 2025: - Fix @-mentioning MCP servers to toggle them on/off - Improve permission checks for bash with inline env vars
• v2.0.15 — October 14, 2025: - Fixed bug with resuming where previously created files needed to be read again before writing - Fixed bug with -p mode where @-mentioned files needed to be re
• v2.0.17 — October 15, 2025: - Added Haiku 4.5 to model selector! - Haiku 4.5 automatically uses Sonnet in plan mode, and Haiku for execution (i.e. SonnetPlan by default)
• v2.0.19 — October 15, 2025: - Auto-background long-running bash commands instead of killing them. Customi
• v2.0.20 — October 16, 2025: - Added support for Claude Skills
• v2.0.21 — October 16, 2025: - Support MCP structuredContent field in tool responses - Added an interactive question tool
• v2.0.22 — October 17, 2025: - Fixed content layout shift when scrolling through slash commands - IDE: Add toggle to enable/disable thinking.
• v2.0.24 — October 20, 2025: - Fixed a bug where project-level skills were not loading when --setting-sources 'project' was specified - Claude Code Web: Support for Web -> CLI teleport
• v2.0.25 — October 21, 2025: - Removed legacy SDK entrypoint. Please migrate to @anthropic-ai/claude-agent-sdk for future SDK updates: https://platform.claude.com/docs/en/agent-sdk/migratio
• v2.0.27 — October 24, 2025: - New UI for permission prompts - Added current branch filtering and search to session resume screen for easier navigation
• v2.0.28 — October 27, 2025: - Plan mode: introduced new Plan subagent - Subagents: claude can now choose to resume subagents
• v2.0.30 — October 30, 2025: - Added helpful hint to run security unlock-keychain when encountering API key errors on macOS with locked keychain - Added allowUnsandboxedCommands sandbox set
• v2.0.31 — October 31, 2025: - Windows: native installation uses shift+tab as shortcut for mode switching, instead of alt+m - Vertex: add support for Web Search on supported models
• v2.0.32 — November 3, 2025: - Un-deprecate output styles based on community feedback - Added companyAnnouncements setting for displaying announcements on startup
• v2.0.33 — November 4, 2025: - Native binary installs now launch quicker. - Fixed claude doctor incorrectly detecting Homebrew vs npm-global installations by properly resolving symlinks
• v2.0.34 — November 5, 2025: - VSCode Extension: Added setting to configure the initial permission mode for new conversations - Improved file path suggestion performance with native Rust-ba
• v2.0.35 — November 6, 2025: - Improve fu
• v2.0.36 — November 7, 2025: - Fixed: DISABLEAUTOUPDATER environment variable now properly disables package manager update notifications - Fixed queued messages being incorrectly executed a
• v2.0.37 — November 10, 2025: - Fixed how idleness is computed for notifications - Hooks: Added matcher values for Notification hook events
• v2.0.41 — November 14, 2025: - Added model parameter to prompt-based stop hooks, allowing users to specify a custom model for hook evaluation - Fixed slash commands from user settings being
• v2.0.42 — November 14, 2025: - Added agentid and agenttranscriptpath fields to SubagentStop hooks.
• v2.0.43 — November 17, 2025: - Added permissionMode field for custom agents - Added tooluseid field to PreToolUseHookInput and PostToolUseHookInput types
• v2.0.45 — November 18, 2025: - Added support for Microsoft Foundry! See https://code.claude.com/docs/en/a
• v2.0.46 — November 19, 2025: - Fixed image files being reported with incorrect media type when format cannot be detected from metadata
• v2.0.47 — November 19, 2025: - Improved error messages and validation for claude --teleport - Improved error handling in /usage
• v2.0.49 — November 21, 2025: - Added readline-style ctrl-y for pasting deleted text - Improved clarity of usage limit warning message
• v2.0.50 — November 21, 2025: - Fixed bug preventing calling MCP tools that have nested references in their input schemas - Silenced a noisy but harmless error during upgrades
• v2.0.51 — November 24, 2025: - Added Opus 4.5! https://www.anthropic.com/news/claude-opus-4-5 - Introducing Claude Code for Desktop: https://claude.com/download
• v2.0.52 — November 24, 2025: - Fixed duplicate message display when starting Claude with a command line argument - Fixed /usage command progress bars to fill up as usage increases (instead
• v2.0.54 — November 25, 2025: - Hooks: Enable PermissionRequest hooks to process 'always allow' suggestions and apply permission updates - Fix issue with excessive iTerm notifications
• v2.0.55 — November 26, 2025: - Fixed proxy DNS resolution being forced on by default. Now opt-in via CLAUDECODEPROXYRESOLVESHOSTS=true environment variable - Fixed keyboard navigation becom
• v2.0.56 — December 1, 2025: - Added setting to enable/disable terminal progress bar (OSC 9;4) - VSCode Extension: Added support for VS Code's secondary sidebar (VS Code 1.97+), allowing Cl
• v2.0.57 — December 3, 2025: - Added feedback input when rejecting plans, allowing users to tell Claude what to change - VSCode: Added streaming message support for real-time response displ
• v2.0.58 — December 3, 2025: - Pro users now have access to Opus 4.5 as part of their subscription! - Fixed timer duration showing "11m 60s" instead of "12m 0s"
• v2.0.59 — December 4, 2025: - Added --agent CLI flag to override the agent setting for the current session - Added agent setting to configure main thread with a specific agent's system pro
• v2.0.60 — December 5, 2025: - Added background agent support. Agents run in the background while you work - Added --disable-slash-commands CLI flag to disable all slash commands
• v2.0.61 — December 7, 2025: - Reverted VSCode support for multiple terminal clients due to responsiveness issues.
• v2.0.62 — December 9, 2025: - Added "(Recommended)" indicator for multiple-choice questions, with the recommended option moved to the top of the list - Added attribution setting to customi
• v2.0.64 — December 10, 2025: - Made auto-compacting instant - Agents and bash commands can run asynchronously and send messages to wake up the main agent
• v2.0.65 — December 11, 2025: - Added ability to switch models while writing a prompt using alt+p (linux, windows), option+p (macos). - Added context window information to status line input
• v2.0.67 — December 11, 2025: - Thinking mode is now enabled by default for Opus 4.5 - Thinking mode configuration has moved to /config
• v2.0.68 — December 12, 2025: - Fixed IME (Input Method Editor) support for languages like Chinese, Japanese, and Korean by correctly positioning the composition window at the cursor - Fixed
• v2.0.69 — December 13, 2025: - Minor bugfixes
• v2.0.70 — December 15, 2025: - Added Enter key to accept and submit prompt suggestions immediately (tab still accepts for editing) - Added wildcard syntax mcpserver for MCP tool permissions
• v2.0.71 — December 16, 2025: - Added /config toggle to enable/disable prompt suggestions - Added /settings as an alias for the /config command
• v2.0.72 — December 17, 2025: - Added Claude in Chrome (Beta) feature that works with the Chrome extension (https://claude.ai/chrome) to let you control your browser directly from Claude Cod
• v2.0.73 — December 18, 2025: - 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
• v2.0.74 — December 19, 2025: - Added LSP (Language Server Protocol) tool for code intelligence features like go-to-definition, find references, and hover documentation - Added /terminal-set
• v2.0.75 — December 20, 2025: - Minor bugfixes
• v2.0.76 — December 22, 2025: - Fixed issue with macOS code-sign warning when using Claude in Chrome integration
• v2.1.0 — January 7, 2026: - Added automatic skill hot-reload - skills created or modified in ~/.claude/skills or .claude/skills are now immediately available without restarting the sessi
• v2.1.2 — January 8, 2026: - Added source path metadata to images dragged onto the terminal, helping Claude understand where images originated - Added clickable hyperlinks for file paths
• v2.1.3 — January 9, 2026: - Merged slash commands and skills, simplifying the mental model with no change in behavior - Added release channel (stable or latest) toggle to /config - Added
• v2.1.4 — January 10, 2026: - Added CLAUDECODEDISABLEBACKGROUNDTASKS environment variable to disable all background task functionality including auto-backgrounding and the Ctrl+B shortcut
• v2.1.5 — January 11, 2026: - Added CLAUDECODETMPDIR environment variable to override the temp directory used for internal temp files, useful for environments with custom temp directory re
• v2.1.6 — January 13, 2026: - Added search functionality to /config command for quickly filtering settings - Added Updates section to /doctor showing auto-update channel and available npm
• v2.1.7 — January 13, 2026: - Added showTurnDuration setting to hide turn duration messages (e.g., "Cooked for 1m 6s") - Added ability to provide feedback when accepting permission prompts
• v2.1.9 — January 15, 2026: - 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
• v2.1.10 — January 17, 2026: - Added new Setup hook event that can be triggered via --init, --init-only, or --maintenance CLI flags for repository setup and maintenance operations - Added k
• v2.1.11 — January 17, 2026: - Fixed excessive MCP connection requests for HTTP/SSE transports
• v2.1.12 — January 17, 2026: - Fixed message rendering bug
• v2.1.14 — January 20, 2026: - Added history-based autocomplete in bash mode (!) - type a partial command and press Tab to complete from your bash command history - Added search to installe
• v2.1.15 — January 21, 2026: - Added deprecation notification for npm installations - run claude install or see https://docs.anthropic.com/en/docs/claude-code/getting-started for more optio
• v2.1.16 — January 22, 2026: - Added new task management system, including new capabilities like dependency tracking - [VSCode] Added native plugin management support - [VSCode] Added abili
• v2.1.17 — January 22, 2026: - Fixed crashes on processors without AVX instruction support
• v2.1.18 — January 22, 2026: - Added customi
• v2.1.19 — January 23, 2026: - Added env var CLAUDECODEENABLETASKS, set to false to keep the old system temporarily - Added shorthand $0, $1, etc. for accessing individual arguments in cust
• v2.1.20 — January 27, 2026: - Added arrow key history navigation in vim normal mode when cursor cannot move further - Added external editor shortcut (Ctrl+G) to the help menu for better di
• v2.1.21 — January 28, 2026: - Added support for full-width (
• v2.1.22 — January 28, 2026: - Fixed structured outputs for non-interactive (-p) mode
• v2.1.23 — January 29, 2026: - Added customizable spinner verbs setting (spinnerVerbs) - Fixed mTLS and proxy connectivity for users behind corporate proxies or using client certificates -
• v2.1.25 — January 29, 2026: - Fixed beta header validation error for gateway users on Bedrock and Vertex, ensuring CLAUDECODEDISABLEEXPERIMENTALBETAS=1 avoids the error
• v2.1.27 — January 30, 2026: - Added tool call failures and denials to debug logs - Fixed context management validation error for gateway users, ensuring CLAUDECODEDISABLEEXPERIMENTALBETAS=
• v2.1.29 — January 31, 2026: - Fixed startup performance issues when resuming sessions that have savedhookcontext
• v2.1.30 — February 3, 2026: - Added pages parameter to the Read tool for PDFs, allowing specific page ranges to be read (e.g., pages: "1-5"). Large PDFs (>10 pages) now return a lightweigh
• v2.1.31 — February 4, 2026: - Added session resume hint on exit, showing how to continue your conversation later - Added support for full-width (
• v2.1.32 — February 5, 2026: - Claude Opus 4.6 is now available! - Added research preview agent teams feature for multi-agent collaboration (token-intensive feature, requires setting CLAUDE
• v2.1.33 — February 6, 2026: - Fixed agent teammate sessions in tmux to send and receive messages - Fixed warnings about agent teams not being available on your current plan - Added Teammat
• v2.1.34 — February 6, 2026: - Fixed a crash when agent teams setting changed between renders - Fixed a bug where commands excluded from sandboxing (via sandbox.excludedCommands or dangerou
• v2.1.36 — February 7, 2026: - Fast mode is now available for Opus 4.6. Learn more at https://code.claude.com/docs/en/fast-mode
• v2.1.37 — February 7, 2026: - Fixed an issue where /fast was not immediately available after enabling /extra-usage
• v2.1.38 — February 10, 2026: - 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
• v2.1.39 — February 10, 2026: - Added guard against launching Claude Code inside another Claude Code session - Fixed Agent Teams using wrong model identifier for Bedrock, Vertex, and Foundry
• v2.1.41 — February 13, 2026: - Fixed AWS auth refresh hanging indefinitely by adding a 3-minute timeout - Added claude auth login, claude auth status, and claude auth logout CLI subcommands
• v2.1.42 — February 13, 2026: - Improved startup performance by deferring Zod schema construction - Improved prompt cache hit rates by moving date out of system prompt - Added one-time Opus
• v2.1.44 — February 16, 2026: - Fixed auth refresh errors
• v2.1.45 — February 17, 2026: - Added support for Claude Sonnet 4.6 - Added support for reading enabledPlugins and extraKnownMarketplaces from --add-dir directories - Added spinnerTipsOverri
• v2.1.47 — February 18, 2026: - Fixed FileWriteTool line counting to preserve intentional trailing blank lines instead of stripping them with trimEnd(). - Fixed Windows terminal rendering bu
• v2.1.49 — February 19, 2026: - Added --worktree (-w) flag to start Claude in an isolated git worktree - Subagents support isolation: "worktree" for working in a temporary git worktree - Add
• v2.1.50 — February 20, 2026: - Added support for startupTimeout configuration for LSP servers - Added WorktreeCreate and WorktreeRemove hook events, enabling custom VCS setup and teardown w
• v2.1.51 — February 23, 2026: - Added claude remote-control subcommand for external builds, enabling local environment serving for all users. - Updated plugin marketplace default git timeout
• v2.1.52 — February 24, 2026: - VS Code: Fixed extension crash on Windows ("command 'claude-vscode.editor.openLast' not found")
• v2.1.53 — February 24, 2026: - Fixed a UI flicker where user input would briefly disappear after submission before the message rendered - Fixed bulk agent kill (ctrl+f) to send a single agg
• v2.1.55 — February 25, 2026: - Fixed BashTool failing on Windows with EINVAL error
• v2.1.56 — February 25, 2026: - VS Code: Fixed another cause of "command 'claude-vscode.editor.openLast' not found" crashes
• v2.1.58 — February 25, 2026: - Expand Remote Control to more users
• v2.1.59 — February 25, 2026: - Claude automatically saves useful context to auto-memory. Manage with /memory - Added /copy command to show an interactive picker when code blocks are present
• v2.1.61 — February 26, 2026: - Fixed concurrent writes corrupting config file on Windows
• v2.1.62 — February 27, 2026: - Fixed prompt suggestion cache regression that reduced cache hit rates
• v2.1.63 — February 28, 2026: - Added /simplify and /batch bundled slash commands - Fixed local slash command output like /cost appearing as user-sent messages instead of system messages in
• v2.1.66 — March 4, 2026: - Reduced spurious error logging
• v2.1.68 — March 4, 2026: - Opus 4.6 now defaults to medium effort for Max and Team subscribers. Medium effort works well for most tasks — it's the sweet spot between speed and thoroughn
• v2.1.69 — March 4, 2026: - Added the /claude-api skill for building applications with the Claude API and Anthropic SDK - Added Ctrl+U on an empty bash prompt (!) to exit bash mode, matc
• v2.1.70 — March 6, 2026: - Fixed API 400 errors when using ANTHROPICBASEURL with a third-party gateway — tool search now correctly detects proxy endpoints and disables toolreference blo
• v2.1.71 — March 6, 2026: - Added /loop command to run a prompt or slash command on a recurring interval (e.g. /loop 5m check the deploy) - Added cron scheduling tools for recurring prom
• v2.1.72 — March 9, 2026: - Fixed tool search to activate even with ANTHROPICBASEURL as long as ENABLETOOLSEARCH is set. - Added w key in /copy to write the focused selection directly to
• v2.1.73 — March 11, 2026: - Added modelOverrides setting to map model picker entries to custom provider model IDs (e.g. Bedrock inference profile ARNs) - Added actionable guidance when O
• v2.1.74 — March 11, 2026: - Added actionable suggestions to /context command — identifies context-heavy tools, memory bloat, and capacity warnings with specific optimi
• v2.1.75 — March 13, 2026: - Added 1M context window for Opus 4.6 by default for Max, Team, and Enterprise plans (previously required extra usage) - Added /color command for all users to
• v2.1.76 — March 14, 2026: - Added MCP elicitation support — MCP servers can now request structured input mid-task via an interactive dialog (form fields or browser URL) - Added new Elici
• v2.1.77 — March 16, 2026: - Increased default maximum output token limits for Claude Opus 4.6 to 64k tokens, and the upper bound for Opus 4.6 and Sonnet 4.6 models to 128k tokens - Added
• v2.1.78 — March 17, 2026: - Added StopFailure hook event that fires when the turn ends due to an API error (rate limit, auth failure, etc.) - Added ${CLAUDEPLUGINDATA} variable for plugi
• v2.1.79 — March 18, 2026: - Added --console flag to claude auth login for Anthropic Console (API billing) authentication - Added "Show turn duration" toggle to the /config menu - Fixed c
• v2.1.80 — March 19, 2026: - Added ratelimits field to statusline scripts for displaying Claude.ai rate limit usage (5-hour and 7-day windows with usedpercentage and resetsat) - Added sou
• v2.1.81 — March 20, 2026: - Added --bare flag for scripted -p calls — skips hooks, LSP, plugin sync, and skill directory walks; requires ANTHROPICAPIKEY or an apiKeyHelper via --settings
• v2.1.83 — March 24, 2026: - Added managed-settings.d/ drop-in directory alongside managed-settings.json, letting separate teams deploy independent policy fragments that merge alphabetica
• v2.1.84 — March 25, 2026: - Added PowerShell tool for Windows as an opt-in preview. Learn more at https://code.claude.com/docs/en/tools-referencepowershell-tool - Added ANTHROPICDEFAULT{
• v2.1.85 — March 26, 2026: - Added CLAUDECODEMCPSERVERNAME and CLAUDECODEMCPSERVERURL environment variables to MCP headersHelper scripts, allowing one helper to serve multiple servers - A
• v2.1.86 — March 27, 2026: - Added X-Claude-Code-Session-Id header to API requests so proxies can aggregate requests by session without parsing the body - Added .jj and .sl to VCS directo
• v2.1.87 — March 29, 2026: - Fixed messages in Cowork Dispatch not getting delivered
• v2.1.88 — March 30, 2026: - Added CLAUDECODENOFLICKER=1 environment variable to opt into flicker-free alt-screen rendering with virtuali
• v2.1.89 — March 31, 2026: - Added "defer" permission decision to PreToolUse hooks — headless sessions can pause at a tool call and resume with -p --resume to have the hook re-evaluate -
• v2.1.90 — April 1, 2026: - Added /powerup — interactive lessons teaching Claude Code features with animated demos - Added CLAUDECODEPLUGINKEEPMARKETPLACEONFAILURE env var to keep the ex
• v2.1.91 — April 2, 2026: - Added MCP tool result persistence override via meta["anthropic/maxResultSi
• v2.1.92 — April 4, 2026: - Added forceRemoteSettingsRefresh policy setting: when set, the CLI blocks startup until remote managed settings are freshly fetched, and exits if the fetch fa
• v2.1.94 — April 7, 2026: - Added support for Ama
• v2.1.96 — April 8, 2026: - Fixed Bedrock requests failing with 403 "Authori
• v2.1.97 — April 8, 2026: - Added focus view toggle (Ctrl+O) in NOFLICKER mode showing prompt, one-line tool summary with edit diffstats, and final response - Added refreshInterval statu
• v2.1.98 — April 9, 2026: - Added interactive Google Vertex AI setup wi
• v2.1.101 — April 10, 2026: - Added /team-onboarding command to generate a teammate ramp-up guide from your local Claude Code usage - Added OS CA certificate store trust by default, so ent
• v2.1.105 — April 13, 2026: - Added path parameter to the EnterWorktree tool to switch into an existing worktree of the current repository - Added PreCompact hook support: hooks can now bl
• v2.1.107 — April 14, 2026: - Show thinking hints sooner during long operations
• v2.1.108 — April 14, 2026: - Added ENABLEPROMPTCACHING1H env var to opt into 1-hour prompt cache TTL on API key, Bedrock, Vertex, and Foundry (ENABLEPROMPTCACHING1HBEDROCK is deprecated b
• v2.1.109 — April 15, 2026: - Improved the extended-thinking indicator with a rotating progress hint
• v2.1.110 — April 15, 2026: - Added /tui command and tui setting — run /tui fullscreen to switch to flicker-free rendering in the same conversation - Added push notification tool — Claude
• v2.1.111 — April 16, 2026: - Claude Opus 4.7 xhigh is now available! Use /effort to tune speed vs. intelligence - Auto mode is now available for Max subscribers when using Opus 4.7 - Adde
• v2.1.112 — April 16, 2026: - Fixed "claude-opus-4-7 is temporarily unavailable" for auto mode
• v2.1.113 — April 17, 2026: - Changed the CLI to spawn a native Claude Code binary (via a per-platform optional dependency) instead of bundled JavaScript - Added sandbox.network.deniedDoma
• v2.1.114 — April 17, 2026: - Fixed a crash in the permission dialog when an agent teams teammate requested tool permission
• v2.1.116 — April 20, 2026: - /resume on large sessions is significantly faster (up to 67% on 40MB+ sessions) and handles sessions with many dead-fork entries more efficiently - Faster MCP
• v2.1.117 — April 21, 2026: - Forked subagents can now be enabled on external builds by setting CLAUDECODEFORKSUBAGENT=1 - Agent frontmatter mcpServers are now loaded for main-thread agent
• v2.1.118 — April 22, 2026: - Added vim visual mode (v) and visual-line mode (V) with selection, operators, and visual feedback - Merged /cost and /stats into /usage — both remain as typin
• v2.1.119 — April 23, 2026: - /config settings (theme, editor mode, verbose, etc.) now persist to ~/.claude/settings.json and participate in project/local/policy override precedence - Adde
• v2.1.120 — April 24, 2026: - Windows: Git for Windows (Git Bash) is no longer required — when absent, Claude Code uses PowerShell as the shell tool - Added claude ultrareview [target] sub
• v2.1.121 — April 27, 2026: - Added alwaysLoad option to MCP server config — when true, all tools from that server skip tool-search deferral and are always available - Added claude plugin
• v2.1.122 — April 28, 2026: - Added ANTHROPICBEDROCKSERVICETIER environment variable to select a Bedrock service tier (default, flex, or priority), sent as the X-Am
• v2.1.123 — April 29, 2026: - Fixed OAuth authentication failing with a 401 retry loop when CLAUDECODEDISABLEEXPERIMENTALBETAS=1 is set
• v2.1.126 — April 30, 2026: - The /model picker now lists models from your gateway's /v1/models endpoint when ANTHROPICBASEURL points at an Anthropic-compatible gateway - - Added claude pr
• v2.1.128 — May 4, 2026: - Bare /color (no args) now picks a random session color - /mcp now shows the tool count for connected servers and flags servers that connected with 0 tools - -
• v2.1.129 — May 5, 2026: - Added --plugin-url <url> flag to fetch a plugin .
• v2.1.131 — May 6, 2026: - Fixed VS Code extension failing to activate on Windows due to a hardcoded build path in the bundled SDK (createRequire polyfill bug) - Fixed Mantle endpoint a
• v2.1.132 — May 6, 2026: - Added CLAUDECODESESSIONID environment variable to the Bash tool subprocess environment, matching the sessionid passed to hooks - Added CLAUDECODEDISABLEALTERN
• v2.1.133 — May 7, 2026: - Added worktree.baseRef setting (fresh | head) to choose whether --worktree, EnterWorktree, and agent-isolation worktrees branch from origin/<default> or local
• v2.1.136 — May 8, 2026: - Added CLAUDECODEENABLEFEEDBACKSURVEYFOROTEL to re-enable the session quality survey for enterprises capturing responses through OpenTelemetry - Added settings
• v2.1.137 — May 9, 2026: - [VSCode] Fixed extension failing to activate on Windows
• v2.1.138 — May 9, 2026: - Internal fixes
• v2.1.139 — May 11, 2026: - Added agent view (Research Preview): a single list of every Claude Code session — running, blocked on you, or done. Run claude agents to get started. See http
• v2.1.140 — May 12, 2026: - Improved Agent tool subagenttype matching to accept case- and separator-insensitive values (e.g. "Code Reviewer" resolves to code-reviewer) - Updated agent co
• v2.1.141 — May 13, 2026: - Added terminalSequence field to hook JSON output so hooks can emit desktop notifications, window titles, and bells without a controlling terminal - Added CLAU
• v2.1.142 — May 14, 2026: - Added new claude agents flags: --add-dir, --settings, --mcp-config, --plugin-dir, --permission-mode, --model, --effort, and --dangerously-skip-permissions to
• v2.1.143 — May 15, 2026: - Added plugin dependency enforcement: claude plugin disable now refuses when another enabled plugin depends on the target (with a copy-pasteable disable-chain
• v2.1.144 — May 18, 2026: - Added /resume support for background sessions — sessions started via claude --bg or agent view now appear alongside interactive ones, marked with bg - Added e
• v2.1.145 — May 19, 2026: - Added claude agents --json to list live Claude sessions as JSON for scripting (tmux-resurrect, status bars, session pickers) - Added agentid and parentagentid
• v2.1.146 — May 20, 2026: - Renamed /simplify to /code-review with an optional effort level (e.g. /code-review high) - Auto mode no longer suppresses AskUserQuestion when the user or a s
• v2.1.147 — May 21, 2026: - Pinned background sessions (Ctrl+T in claude agents) now stay alive when idle, are restarted in place to apply Claude Code updates, and are shed under memory
• v2.1.148 — May 22, 2026: - Fixed the Bash tool returning exit code 127 on every command for some users (a regression introduced in 2.1.147)
• v2.1.149 — May 22, 2026: - /usage now shows a per-category breakdown of what's driving your limits usage — skills, subagents, plugins, and per-MCP-server cost - /diff detail view can no
• v2.1.150 — May 23, 2026: - Internal infrastructure improvements (no user-facing changes)
• v2.1.152 — May 26, 2026: - /code-review --fix now applies review findings to your working tree after the review, surfacing reuse, simplification, and efficiency suggestions; /simplify n
• v2.1.153 — May 27, 2026: - Added skipLfs option to github/git plugin marketplace sources to skip Git LFS downloads during clone and update - Claude Code now shows a one-time notice when
• v2.1.154 — May 28, 2026: - Opus 4.8 is here! Now defaults to high effort · /effort xhigh for your hardest tasks - Introducing dynamic workflows: ask Claude to create a workflow and it o
• v2.1.156 — May 28, 2026: - Fixed an issue when using Opus 4.8 where thinking blocks were modified, leading to API errors.
• v2.1.157 — May 29, 2026: - Plugins in .claude/skills directories are now automatically loaded, no marketplace required - Added claude plugin init <name> to scaffold a new plugin in .cla
• v2.1.158 — May 30, 2026: - Auto mode is now available on Bedrock, Vertex, and Foundry for Opus 4.7 and Opus 4.8. Opt in by setting CLAUDECODEENABLEAUTOMODE=1
• v2.1.159 — May 31, 2026: - Internal infrastructure improvements (no user-facing changes)
• v2.1.160 — June 1, 2026: - Added a prompt before writing to shell startup files (.
• v2.1.161 — June 2, 2026: - OTELRESOURCEATTRIBUTES values are now included as labels on metric datapoints, so you can slice usage metrics by custom dimensions like team or repo - claude
• v2.1.162 — June 3, 2026: - claude agents --json now includes waitingFor showing what a waiting session is blocked on (e.g. permission prompt) - --tools: explicitly listing Grep/Glob now
• v2.1.163 — June 4, 2026: - Added requiredMinimumVersion and requiredMaximumVersion managed settings — Claude Code refuses to start if its version is outside the allowed range and direct
• v2.1.165 — June 5, 2026: - Bug fixes and reliability improvements
• v2.1.166 — June 5, 2026: - Added fallbackModel setting to configure up to three fallback models tried in order when the primary model is overloaded or unavailable; --fallback-model now
• v2.1.167 — June 6, 2026: - Bug fixes and reliability improvements
• v2.1.168 — June 6, 2026: - Bug fixes and reliability improvements
• v2.1.169 — June 8, 2026: - Added --safe-mode flag (and CLAUDECODESAFEMODE) to start Claude Code with all customi
• v2.1.170 — June 9, 2026: - Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Fable’s capabilities exceed those of any model we’ve ever made generall
• v2.1.172 — June 10, 2026: - Sub-agents can now spawn their own sub-agents (up to 5 levels deep) - Ama
• v2.1.173 — June 11, 2026: - Fixed Fable 5 model names with a [1m] suffix not being normali
• v2.1.174 — June 11, 2026: - Added wheelScrollAccelerationEnabled setting to disable mouse-wheel scroll acceleration in fullscreen mode - Fixed the /model picker hiding the model family t
• v2.1.175 — June 12, 2026: - Added enforceAvailableModels managed setting — when enabled, the availableModels allowlist also constrains the Default model (a Default that would resolve to
• v2.1.176 — June 12, 2026: - Session titles are now generated in the language of your conversation (set the language setting to pin a specific language) - Added footerLinksRegexes setting
• v2.1.178 — June 15, 2026: - Added Tool(param:value) syntax for permission rules to match a tool's input parameters (with wildcard), e.g. Agent(model:opus) to block Opus subagents - Skill
• v2.1.179 — June 16, 2026: - Fixed mid-stream connection drops: partial responses are now preserved instead of showing a raw error, and the spinner no longer gets stuck at "running tool"
• v2.1.181 — June 17, 2026: - Added /config key=value syntax to set any setting from the prompt (e.g. /config thinking=false) — works in interactive, -p, and Remote Control - Added sandbox
• v2.1.183 — June 19, 2026: - Improved auto mode safety: destructive git commands (git reset --hard, git checkout -- ., git clean -fd, git stash drop) are now blocked when you didn't ask t
• v2.1.185 — June 20, 2026: - The stream-stall hint now reads "Waiting for API response · will retry in …" instead of "No response from API · Retrying in …", and triggers after 20s of sile
• v2.1.186 — June 22, 2026: - Added claude mcp login <name> and claude mcp logout <name> to authenticate MCP servers from the CLI without opening the interactive /mcp menu, with --no-brows
• v2.1.187 — June 23, 2026: - Added sandbox.credentials setting to block sandboxed commands from reading credential files and secret environment variables - Added org-configured model rest
• v2.1.190 — June 24, 2026: - Bug fixes and reliability improvements
• v2.1.191 — June 24, 2026: - Added /rewind support for resuming a conversation from before /clear was run - Fixed scroll position jumping to the bottom while reading earlier output during
• v2.1.193 — June 25, 2026: - Added autoMode.classifyAllShell setting to route all Bash/PowerShell commands through the auto-mode classifier instead of only arbitrary-code-execution patter
• v2.1.195 — June 26, 2026: - Added CLAUDECODEDISABLEMOUSECLICKS to disable mouse click/drag/hover in fullscreen mode while keeping wheel scroll - Fixed hook matchers with hyphenated ident
• v2.1.196 — June 29, 2026: - Added support for organi
• v2.1.197 — June 30, 2026: Claude Code 2.1.197 now uses Claude Sonnet 5 by default, giving you a massive 1M-token context window to work with longer files and projects. Plus, enjoy specia
• v2.1.198 — July 1, 2026: Claude Code 2.1.198 brings Chrome integration out of beta so you can use Claude directly in your browser, plus smarter agent notifications that alert you when y
• v2.1.199 — July 2, 2026: Claude Code 2.1.199 now handles multiple stacked skills at once instead of just the first one, letting you combine more tools in a single command. We've also fi
• v2.1.200 — July 3, 2026: Claude Code 2.1.200 gives you more control over when AI interactions continue automatically—now they pause by default unless you configure them otherwise. We've
• v2.1.201 — July 3, 2026: Claude Code 2.1.201 streamlines conversations by removing interruptions during your work sessions, letting you stay focused on what matters. Check the full rele
• v2.1.202 — July 6, 2026: - Added a "Dynamic workflow si
• v2.1.203 — July 7, 2026: Claude Code 2.1.203 now warns you before your login expires so you won't lose work in background sessions, and fixes a frustrating issue where switching between
• v2.1.204 — July 8, 2026: Claude Code 2.1.204 resolves a critical issue where remote workers could disconnect unexpectedly during setup, ensuring smoother initialization for headless env
• v2.1.205 — July 8, 2026: Claude Code 2.1.205 now prevents accidental changes to session files and fixes critical issues where messages could get lost or jobs could get stuck in incorrec
• v2.1.206 — July 9, 2026: Claude Code 2.1.206 makes pushing code changes faster by automatically allowing git push to your configured remote, and improves the /doctor tool to help keep y
• v2.1.207 — July 10, 2026: Claude Code 2.1.207 brings auto mode to more platforms without requiring special setup, letting you work faster with less manual input. We've also squashed term
• v2.1.208 — July 13, 2026: Claude Code 2.1.208 now includes screen reader support for better accessibility and vim insert mode remapping so you can use shortcuts like jj to escape. We've
• v2.1.209 — July 14, 2026: Claude Code 2.1.209 restores access to model selection and other dialogs that were accidentally blocked in background agent sessions. This fix brings back full
• v2.1.210 — July 14, 2026: Claude Code 2.1.210 adds a live counter to show long-running tool calls are working instead of appearing frozen, plus improved security isolation for subagents.
• v2.1.211 — July 15, 2026: Claude Code 2.1.211 now lets you capture subagent insights directly in your workflows with new forwarding options, while we've also patched some permission disp
• v2.1.212 — July 16, 2026: Claude Code 2.1.212 makes it easier to manage multiple conversations with /fork creating separate background sessions while you keep working, and adds smart saf
• v2.1.214 — July 18, 2026: Claude Code 2.1.214 tightens security with fixes that prevent unauthorized access to nested directories and close permission loopholes in Windows PowerShell and
• v2.1.215 — July 19, 2026: Claude Code 2.1.215 puts you in control with manual skill invocation—simply use /verify or /code-review when you need them instead of having Claude run them aut
• v2.1.216 — July 20, 2026: Claude Code 2.1.216 now lets you control filesystem isolation independently, giving you more flexibility in how you run your code. We've also fixed a performanc
• v2.1.217 — July 21, 2026: Claude Code 2.1.217 now makes it easier to express yourself with emoji shortcode autocomplete in the prompt input, while improved warnings help you catch transc
• v2.1.218 — July 22, 2026: Claude Code 2.1.218 moves code reviews to the background so they won't interrupt your workflow, and fixes critical issues like Windows paths being corrupted and
• v2.1.219 — July 24, 2026: Claude Code 2.1.219 now includes Claude Opus 5 as the default model with faster performance and expanded context, plus stronger security controls for sandboxed
• v2.1.220 — July 24, 2026: - Bug fixes and reliability improvements
• v2.1.221 — August 3, 2026: Claude Code 2.1.221 introduces a Focus view that declutters your chat interface by collapsing tool activity into compact summaries, keeping you focused on what
• v2.1.222 — August 4, 2026: Claude Code 2.1.222 strengthens security by preventing destructive commands in isolated sessions and blocking tool restriction bypasses in background tasks. We'
• v2.1.223 — August 5, 2026: Claude Code 2.1.223 strengthens security with fixes to permission checks that prevent commands from hiding themselves using tabs or invisible characters, and ad
• v2.1.224 — August 7, 2026: Claude Code 2.1.224 now lets you run sessions on your own machines with self-hosted environments, giving teams complete control over where their code executes.
• v2.1.225 — August 7, 2026: Claude Code 2.1.225 now enforces gateway spending limits with clear notifications showing your cap and reset time, plus fixes critical authentication issues tha
• v2.1.226 — August 8, 2026: - Bug fixes and reliability improvements
• v2.1.227 — August 10, 2026: Claude Code 2.1.227 fixes critical issues with subscription verification and Bash command execution, while making the slash-command menu easier to navigate. We'
• v2.1.228 — August 11, 2026: Claude Code 2.1.228 fixes critical issues where interactive sessions could freeze visually while still running in the background, and resolves a Windows compati
• v2.1.229 — August 12, 2026: Claude Code 2.1.229 now keeps you connected during long thinking pauses and lets you resume sessions seamlessly with improved remote-control support. We've also
• v2.1.231 — August 13, 2026: Claude Code 2.1.231 fixes a critical OAuth sign-in issue that was blocking connections to services like Slack. Your integrations should now connect smoothly wit
• v2.1.232 — August 13, 2026: Claude Code 2.1.232 makes it easier to work across multiple sessions—just type @ to mention another Claude session by name and collaborate seamlessly. We've als
• v2.1.233 — August 14, 2026: Claude Code 2.1.233 now supports GitLab merge requests in the worktree view and adds memory limits to prevent runaway build commands from freezing your session.
• v2.1.234 — August 17, 2026: Claude Code 2.1.234 now automatically continues your session when usage limits reset and includes stronger security protections against credential leaks across
• v2.1.235 — August 18, 2026: Claude Code 2.1.235 now includes optional spellcheck that highlights mistakes as you type, plus major improvements to how it handles background tasks and multi-
• v2.1.236 — August 19, 2026: Claude Code 2.1.236 gives you more control over which model starts new sessions and adds smarter cross-session notifications so sessions can alert each other wh
• v2.1.237 — August 19, 2026: Claude Code 2.1.237 now works reliably with custom gateways and URLs, fixing a frustrating caching issue. We've also added a Concise output style that gets stra
• v2.1.238 — August 20, 2026: Claude Code 2.1.238 now lets you customize keyboard shortcuts with Bash-style editing and adds smarter plugin installation with automatic security token generat
• v2.1.239 — August 21, 2026: Claude Code 2.1.239 now shows accurate cost estimates for data-residency workspaces and brings fullscreen mode to more cloud platforms. We've also fixed critica
• v2.1.240 — August 22, 2026: - Bug fixes and reliability improvements
• v2.1.241 — August 22, 2026: - Bug fixes and reliability improvements
• v2.1.243 — August 24, 2026: Claude Code 2.1.243 now gives you detailed visibility into your loops with a new breakdown showing exactly which tasks are consuming the most tokens, plus custo
• v2.1.245 — August 25, 2026: Claude Code 2.1.245 fixes a critical startup crash affecting Linux users on the latest glibc versions, ensuring the tool runs smoothly on Arch Linux, CachyOS, a
• v2.1.246 — August 25, 2026: Claude Code 2.1.246 now shows you exactly when each turn completes and gives clearer warnings about overly broad permission rules that could cause unintended ac
• v2.1.247 — August 26, 2026: Claude Code 2.1.247 now lets Claude automatically draft feedback reports when issues occur, making it easier to report problems directly from the app. We've als
• v2.1.248 — August 27, 2026: Claude Code 2.1.248 now lets you run code safely with a restricted mode that blocks risky operations, while a new cache setting helps agents work faster by reus
• v2.1.250 — August 27, 2026: - Bug fixes and reliability improvements
• v2.1.251 — August 28, 2026: Claude Code 2.1.251 now lets you control when models switch with new hook events and shows live tool execution from subagents to Remote Control clients. We've a
• v2.1.252 — August 31, 2026: Claude Code 2.1.252 fixes critical issues that were causing commands to fail on some Macs and Remote Control sessions to stall unexpectedly. We've also improved
• v2.1.257 — September 1, 2026: Claude Code 2.1.257 now includes Claude Fable 5.1 as the default model with expanded context and improved pricing, plus new customizable time format settings fo
• v2.1.258 — September 1, 2026: Claude Code 2.1.258 fixes critical issues that were preventing the app from launching on older Mac systems and resolving remote session failures. These updates
• v2.1.259 — September 2, 2026: - Added managedMcpServers managed setting: organi
• v2.1.260 — September 3, 2026: Claude Code 2.1.260 now shows your uncommitted changes in a side-by-side diff panel, making it easier to review edits as they happen. We've also improved debugg
• v2.1.261 — September 4, 2026: - Added an "Organi
• v2.1.263 — September 6, 2026: - Bug fixes and reliability improvements
• v2.1.265 — September 8, 2026: Claude Code 2.1.265 now lets you point to entire plugin folders that automatically load child plugins and pick up changes in real-time, plus adds smart storage
• v2.1.266 — September 8, 2026: Claude Code 2.1.266 resolves a critical authentication issue that broke proxy and gateway setups in the previous version. We've restored the proper behavior so
• v2.1.267 — September 9, 2026: Claude Code 2.1.267 gives you new control over resource usage with effort level limits across all providers, plus better ways to fine-tune your prompts and impr
• v2.1.268 — September 10, 2026: Claude Code 2.1.268 brings unified pricing across your Claude apps gateway with automatic rate matching, plus new security safeguards that warn you about open n
• v2.1.269 — September 11, 2026: Claude Code 2.1.269 now lets you evaluate plugins with reproducible, scored results and gives you more control over how output appears across different environm
• v2.1.270 — September 12, 2026: Claude Code 2.1.270 fixes an annoying bug where git commands would unexpectedly ask for permission during long sessions. We've also made several under-the-hood
• v2.1.271 — September 14, 2026: Claude Code 2.1.271 brings faster remote coding sessions with a new fast mode that lets you speed up your work in cloud and self-hosted environments. You can no
• v2.1.272 — September 14, 2026: - Bug fixes and reliability improvements
• v2.1.273 — September 15, 2026: Claude Code 2.1.273 now automatically reconnects when MCP servers disconnect and notifies you if it can't recover, plus you can fork remote-control sessions to
• v2.1.274 — September 16, 2026: Claude Code 2.1.274 now alerts you when memory is running critically low with clear steps to free up space or safely restart. We've also fixed a frustrating bug
• v2.1.275 — September 17, 2026: Claude Code 2.1.275 streamlines authentication with account confirmation before saving credentials and adds a quick send-now key to interrupt and dispatch all q
• v2.1.276 — September 18, 2026: Claude Code 2.1.276 fixes a critical issue that was causing all requests to fail when using proxy or gateway setups. We've resolved the input tag error that app
• v2.1.277 — September 18, 2026: Claude Code 2.1.277 now reads AGENTS.md as project instructions when CLAUDE.md isn't present, making it easier to configure your setup. We've also improved stab
• v2.1.278 — September 19, 2026: Claude Code 2.1.278 now runs auto mode more efficiently by defaulting to server-side processing, which means no extra charges for most users. We've also added b
• v2.1.280 — September 22, 2026: Claude Code 2.1.280 brings Claude Opus 5.5 as your new default model with a massive 1M context window and faster processing, plus improved mouse controls in ful
• v2.1.281 — September 23, 2026: Claude Code 2.1.281 brings improved desktop security controls and cross-account AWS access, making it easier to manage permissions and work across different AWS
• v2.1.282 — September 24, 2026: Claude Code 2.1.282 makes reading easier with smarter text formatting in wide terminals, while giving you better visibility into what telemetry settings your pr
• v2.1.283 — September 25, 2026: Claude Code 2.1.283 makes it easier to manage which AI models your team can use, with new controls to lock in specific versions and block others—keeping you in
• v2.1.284 — September 28, 2026: Claude Code 2.1.284 now uses the faster Claude Sonnet 5.5 model by default, giving you improved performance with a massive 1M context window. We've also made pe
• v2.1.285 — September 29, 2026: Claude Code 2.1.285 makes it easier to launch the desktop app directly from your terminal and gives you more control over plugin configuration right at install
• v2.1.286 — September 30, 2026: Claude Code 2.1.286 makes permission requests clearer when multiple stack up, and fixes critical issues where login credentials weren't properly refreshing acro
• v2.1.287 — October 1, 2026: Claude Code 2.1.287 now lets plugins modify deeper behavior with Claude Mods, and introduces an opt-in "You Should Know" agent that watches your back to catch t
• v2.1.288 — October 2, 2026: Claude Code 2.1.288 makes it easier to recover lost work with one keystroke and gives you more control over code review findings, plus fixes that prevent conver
• v2.1.289 — October 3, 2026: Claude Code 2.1.289 improves security by ensuring permission rules properly apply across complex commands and user mods on managed machines. We've also enhanced
• v2.1.290 — October 5, 2026: Claude Code 2.1.290 now gives you deeper visibility into your tools with serverToolUses tracking what the API itself calls, plus smarter permission controls tha
• v2.1.291 — October 6, 2026: Claude Code 2.1.291 restores reliability by fixing critical issues where chat messages could disappear and permission prompts were being ignored. These fixes en
• v2.1.292 — October 6, 2026: Claude Code 2.1.292 now lets you install plugins directly from marketplaces and control how hard sub-agents work on your tasks. We've also improved performance,
• v2.1.293 — October 7, 2026: Claude Code 2.1.293 now defaults to the faster, more affordable Claude Haiku 5.5 model with 1M context window, giving you better performance at lower costs. We'
• v2.1.294 — October 8, 2026: Claude Code 2.1.294 strengthens your safety controls by fixing how instruction-based hooks are interpreted, so blocking rules actually work as intended. We've a
• v2.1.295 — October 8, 2026: Claude Code 2.1.295 gives you better control with hooks that can now block actions when they fail, and improves visibility with terminal status updates showing
• v2.1.296 — October 9, 2026: Claude Code 2.1.296 now syncs code settings across Claude Desktop and the gateway for more consistent behavior, while new controls let you manage window compact
• v2.1.299 — October 14, 2026: Claude Code 2.1.299 brings smarter memory management with idle compaction, so long conversations stay efficient without reprocessing, and gives you finer contro
• v2.1.300 — October 14, 2026: Claude Code 2.1.300 brings smarter prompt handling with virtual text that won't interfere with your submissions, plus new ways to customize agent views and cont
• v2.1.301 — October 15, 2026: Claude Code 2.1.301 now handles unattended retries more intelligently, automatically stopping requests when hitting usage limits instead of waiting indefinitely
• v2.1.302 — October 16, 2026: Claude Code 2.1.302 now gives you more control over how auto mode works on your device, plus we've squashed several bugs that were causing frustrating errors du
• v2.1.303 — October 18, 2026: - Bug fixes and reliability improvements
• v2.1.304 — October 19, 2026: Claude Code 2.1.304 now gives you better visibility into plugin interactions and adds intelligent setup guidance that learns from your project to optimize auto
• v2.1.305 — October 20, 2026: Claude Code 2.1.305 now handles tool compatibility issues across different AI providers, so your commands won't fail when using Vertex, Bedrock, or other servic
• v2.1.306 — October 21, 2026: Claude Code 2.1.306 is here: cloud sessions no longer falsely report "Not logged in" for claude -p, and big MCP tool setups stop getting misleading "prompt is t
• v2.1.307 — October 21, 2026: Claude Code 2.1.307 is out: a new safety telemetry event for every stopped or prompted tool call, MCP reconnect fixes after sleep and keychain locks, and checko
• v2.1.308 — October 22, 2026: Claude Code 2.1.303 is out with bug fixes and reliability improvements. The notes don't break down the specifics, so the details are still a mystery. Curious wh
• v2.1.309 — October 22, 2026: Claude Code 2.1.309 is out: tighter sandbox and permission checks, fixes for hooks and PowerShell on Windows, and ultrareview now asks for workspace trust. Curi
• v2.1.310 — October 23, 2026: Claude Code 2.1.310 brings the Monitor tool to Bedrock, Vertex, and Foundry, fixes gateway failures and stubborn compaction, and lets Enterprise Owners set clou

All Claude Code releases · v1.0.34 release · v2.1.310 release