Claude Code v2.1.122 → v2.1.309: what changed

155 releases shipped between v2.1.122 (April 28, 2026) and v2.1.309 (October 22, 2026).

Changelog entries in this range

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

All Claude Code releases · v2.1.122 release · v2.1.309 release