Claude Code changelog changedchangelog
Nearest release: v2.1.257, published under an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+107added
Lines−0removed
From line
6
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits70to this page, all time
The whole hunk
from line 6, old and new numbered
/
This page is larger than the 256 KiB this site keeps, so one side of the diff below stops where the stored text does.
from line 6
66
77Run `claude --version` to check your installed version.
88
9<Update label="2.1.257" description="September 1, 2026">
10 * Added Claude Fable 5.1 (`claude-fable-5-1`), now the default Fable model — 1M context, $10/$50 per Mtok with \$0.25/Mtok cache reads
11 * Added "Time format" (`timeFormat`) and `timeZone` settings: 12-hour, 24-hour, 24-hour UTC, or a strftime pattern for the turn-end clock and transcript-view timestamps
12 * Added a Containment Escape rule to auto mode so cloud metadata-credential fetches, egress evasion, and cross-tenant reach are no longer auto-approved unless your environment marks them expected
13 * Added `CLAUDE_CODE_SUBAGENT_MODEL_FORCE` to apply `CLAUDE_CODE_SUBAGENT_MODEL` (or the main model) to every subagent, ignoring per-spawn and agent-definition model overrides
14 * Added `s` in `/effort` to change effort for the current session only, matching `/model`
15 * Added a `/doctor` warning for stale sandbox mask files left by a killed session
16 * Added a one-time prompt in auto mode before the first file read outside the working directories, with the option to block such reads (`permissions.blockReadsOutsideWorkingDirectories`)
17 * Added support for a gateway-supplied `description` on discovered `/model` picker entries (`CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY`); entries without one still read "From gateway"
18 * Fixed settings in a `.claude/` folder created after startup not being picked up until restart
19 * Fixed sessions dispatched from an agent view opened with `←` always starting in the original session's permission mode, overriding the target directory's `defaultMode` and the agent's `permissionMode`
20 * Fixed `keybindings.json` rebinds of Ctrl+G being ignored in `claude agents`; its Ctrl+S / Ctrl+T are now rebindable via the new `Agents` context
21 * Fixed background sessions failing to start on macOS npm installs during a self-update, and on Windows when a stale daemon lock file pointed at a reused process id
22 * Fixed the working spinner stopping while a response streams behind a slash-command panel
23 * Fixed a background session's `state.json` `detail` repeating its own dispatch prompt after a scheduled wake-up
24 * Fixed `claude agents` keeping a background session you re-prompted buried in Completed after it finished again; Completed now orders by the latest finish
25 * Fixed `claude --bg` from a directory that was just deleted reporting "backgrounded" and leaving a crashed session row; it now prints the reason and exits 1
26 * Fixed Remote Control connecting mid-session re-sending the Bash tool definition, causing a prompt-cache miss
27 * Fixed a doubly-listed custom `Authorization` header overriding the configured credential on Bedrock, Mantle, Vertex, and WIF, and the Vertex setup wizard picking up a leftover Anthropic profile from `~/.config/anthropic`
28 * Fixed Claude apps gateway sending stray host `Authorization` or profile headers to Foundry, Vertex, and Bedrock, and Foundry Entra ID upstreams not starting when `ANTHROPIC_FOUNDRY_API_KEY` is set
29 * Fixed a leftover Anthropic API key or auth token being sent alongside your Foundry subscription key in API-key mode
30 * Fixed `/schedule` routines whose prompt was saved without a message role and then ran with nothing to do
31 * Fixed `claude agents` not saying that a background session is waiting for you to approve a message from another session, or who sent it
32 * Fixed a prompt stashed with Ctrl+S inside an opened background session being lost when the session went idle or was stopped and then reopened
33 * Fixed telemetry (OTEL) settings pushed through server-managed settings being ignored on warm starts, including desktop-app Code sessions
34 * Fixed a teammate permission request being answered twice when the leader's mailbox write was briefly locked
35 * Fixed a phantom duplicate slash-command row rendering below the in-flight turn while a command's auto-continued response streamed
36 * Fixed `policyHelper` `timeoutMs` and `refreshIntervalMs` values above the timer maximum (2147483647) causing failures or re-runs every millisecond; they are now clamped
37 * Fixed the token counter freezing or crawling after switching to another subagent's transcript, and made background subagents' and teammates' counters update live while a response streams
38 * Fixed sandbox network hosts written with a trailing dot (`example.com.`): a `deniedDomains` entry didn't block the host inside the sandbox, and "don't ask again" for such a host kept prompting
39 * Fixed dismissing the Remote Control consent prompt (Esc, or `n` at `claude remote-control`) counting as consent, so the next request connected without asking
40 * Fixed `/mcp` reconnect and enable still connecting a settings-file MCP server that a managed MCP allow/deny list or `strictPluginOnlyCustomization` loaded after startup should block
41 * Fixed `claude mcp remove` leaving a remote server's stored OAuth credentials behind when `strictPluginOnlyCustomization` locks MCP to plugin-only servers
42 * Fixed Remote Control (`claude remote-control`) sessions started from the Claude app ignoring the selected model and running on the machine's default instead
43 * Fixed `--disallowedTools` and session deny rules being dropped after the first settings reload when `allowManagedPermissionRulesOnly` is enabled
44 * Fixed `--resume` listing a backgrounded conversation twice and `--continue` reopening its stalled pre-background copy; `--continue` now also opens finished background sessions
45 * Fixed fullscreen mode not letting you click `!` shell command output to expand it
46 * Fixed background sessions left running an older Claude Code binary piling up across auto-updates instead of being retired
47 * Fixed `claude agents --json` briefly switching the terminal to raw mode and undoing another program's terminal settings on exit
48 * Fixed Proactive output style sessions busy-looping with filler messages and repeated log reads instead of idling while a background command or Monitor they started is still running
49 * Fixed subagents stopping when a response was cut off mid-stream by a computer sleep, dropped connection, or server error; they now automatically continue instead of ending with an incomplete response
50 * Fixed `←` doing nothing in the `/btw` panel inside a `claude agents` session: it now returns to the agents list (even mid-answer), and the panel comes back when you reopen the session
51 * Fixed sessions with an advisor model set missing the prompt cache on background requests (compaction, `/recap`, prompt suggestions) and re-sending the full conversation uncached each time
52 * Fixed `claude -p` exiting about 5 seconds after its final result while a Monitor the model armed was still running; it now waits for the watch to fire or time out
53 * Fixed a `permissions.ask` rule being skipped in auto mode when the matching command ran inside a compound command or subshell, letting it run without the confirmation prompt
54 * Fixed plugins being able to read files outside their own directory through a declared command, agent, skill, hooks or other component path that is a symlink; such paths are now refused with an error
55 * Fixed `/add-dir` rejecting a directory inside the current working directory; it now loads that directory's skills, commands, and agents like `--add-dir` does at startup
56 * Fixed the main agent not being told when you resume a subagent you had stopped from its transcript view
57 * Fixed a crash when pasting ANSI-colored text (e.g. a CI log) into dialogs like `/feedback`
58 * Fixed `claude mcp add/remove` hanging or exhausting memory when the project's `.mcp.json` is a FIFO or a device-file symlink; it now fails fast with an actionable message
59 * Fixed unbounded memory growth when non-JSONL data is piped into `claude -p --input-format stream-json`; it now fails fast with a clear error
60 * Fixed backgrounding a turn (`←` or Ctrl+B) while a subagent or other tool was running occasionally making the background session treat that tool as rejected instead of re-running it
61 * Fixed Bash `Read()`/`Edit()` deny rules not applying to `< file` redirects and reader commands like `tac` and `egrep`; a deny rule on any argument or redirect target now refuses the command
62 * Fixed resuming or messaging a subagent whose transcript had grown past 5 MB (for example after reading many images) failing with "No transcript found"
63 * Fixed worktree-isolated sessions refusing Bash loops, `$VAR` reads, `"$(…)"` and heredocs that never touch git as "too complex to verify that it stays inside the worktree"
64 * Fixed `/model` and `/effort` showing a prompt-cache warning after rewinding a conversation back to empty
65 * Fixed prompt-cache misses on every turn in long screenshot-heavy sessions once images exceeded the per-request size cap
66 * Fixed the Edit permission prompt's diff view rendering emoji and multi-code-point characters with incorrect widths
67 * Fixed WebSocket MCP server connection failures being logged as "\[object ErrorEvent]" instead of the underlying error
68 * Fixed background sessions failing to open with "Couldn't start the background service" while another Claude Code process was downloading an npm update; the start now waits for it
69 * Fixed background commands that detach from their shell (for example under `timeout` or `setsid`) surviving a task stop or Claude Code exit
70 * Fixed Claude not being told when you stop a background command from the tasks panel or a connected client
71 * Fixed stopping a background subagent leaving its monitors running
72 * Fixed sandboxed git commands in a linked worktree losing write access to the repository's common `.git` directory after `cd` into a subdirectory
73 * Fixed Bedrock and Bedrock Mantle requests going silent during long hidden-thinking phases on Opus 4.7 and later, which let idle timeouts cut the connection; the stream now carries progress events
74 * Fixed launching Claude Code after a Claude apps gateway expired or revoked your session: it now says the session ended and offers `/login` instead of reporting a network error
75 * Fixed cloud sessions losing git/GitHub credentials for the rest of the session when the session's network proxy failed to start at launch; it now retries in the background and recovers
76 * Fixed leftover `cc-daemon-*` folders in the system temp directory after an interrupted background daemon start; the `cleanupPeriodDays` retention sweep now removes them
77 * Fixed Bash permission checks auto-approving certain `[[ ]]` conditionals that zsh parses differently from bash; these commands now prompt for approval
78 * Fixed the managed-settings approval prompt showing the generic warning instead of its telemetry wording when the settings also turn detailed tracing or raw API body logging off, or trace export on
79 * Fixed agent-team teammates in tmux/iTerm2 panes sometimes staying open after acknowledging a shutdown request
80 * Fixed the keyless Console sign-in ("Sign in with your Console account") not applying your organization's server-managed settings, and `/status` not showing the Organization for that sign-in
81 * Improved rendering performance: less re-render work per turn in long conversations, streaming no longer slows down as the reply grows, and background-agent updates no longer re-render the whole screen
82 * Improved prompt input responsiveness by reducing per-keystroke rendering work
83 * Improved policy helper diagnostics — refresh failures now show in `/status`, declining the managed-settings dialog prints why Claude Code exited, and helper timeouts are reported as timeouts
84 * Improved `/code-review --comment` to post findings on GitLab merge requests via `glab mr note` instead of reporting the target as unsupported
85 * Improved notifications: an MCP elicitation or permission ask queued under another dialog now sends its idle desktop notification at the same delay as a visible ask
86 * Improved verbose/transcript output: async hook completion notices that arrive together now appear on one line instead of one line per hook
87 * Improved `claude self-hosted-runner --configure-git` to also enable git push negotiation, so the first push of a new branch from a stale clone uploads only the new commits instead of the whole tree
88 * Improved liveness reporting to SDK hosts while a response is held open by gateway keep-alives, so long waits under a raised `CLAUDE_STREAM_IDLE_TIMEOUT_MS` are not mistaken for a hung session
89 * Improved MCP connection and OAuth debug/error logs so credentials carried in a server's URL or request headers are redacted
90 * Improved `/fork` to keep the original conversation's prompt cache in the new background session: its worktree briefing now arrives as a message instead of a system-prompt change
91 * Improved emoji autocomplete to accept the remaining GitHub/Slack shortcode aliases (`:satisfied:`, `:telephone:`, `:collision:`, …)
92 * Changed `--effort` to lift a new model's default-effort hold for that session only rather than permanently; an effort picked on claude.ai for a Remote Control session now applies during the hold
93 * Changed a `policyHelper` in MDM or `managed-settings.json` shadowed at launch by cached server-managed settings to run (or exit) as soon as the fetch reports them removed, not at the next launch
94 * Changed `managedSourcesBehavior: "merge"` to take `sandbox.credentials.awsPairs` and `sandbox.ripgrep` whole from the highest managed source that sets them instead of combining the sources' values
95 * Changed gateway model discovery (`CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY=1`) to run even when `CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC` is set, since it only queries your gateway
96 * Changed `claude --resume <session-id> --bg` to continue that session under its own ID when nothing is running it, instead of silently starting a copy; a copy is now announced
97 * Changed `/btw` history browsing from `←`/`→` to `Shift+←`/`Shift+→` (or `[`/`]`), stepping through your recent side questions and back to the live answer
98 * Changed `defaultMode: "bypassPermissions"` in `.claude/settings.json` or `.claude/settings.local.json` to be ignored, like `"auto"`; set it in user or managed settings, or pass `--permission-mode`
99 * Changed `fable` and `best` in Claude apps gateway sessions to keep resolving to Fable 5 for now, since gateways not yet configured for Fable 5.1 reject it; pick Fable 5.1 in `/model` to use it
100 * Changed `--add-dir`, `/add-dir`, and `additionalDirectories` to refuse network paths (UNC shares, `/net/<host>` automounts) with a message before touching them; on Windows use a mapped drive letter
101 * Changed Claude apps gateway sign-in and token refresh requests to verify the gateway's pinned TLS certificate, as the managed settings fetch already does
102 * Changed Cowork and claude.ai cloud sessions: reading an artifact that isn't yours now always asks you first, even in auto mode
103 * Removed the Ctrl+E command explanation on Bash and PowerShell permission prompts
104 * \[VSCode] Added collapsible ACCOUNT & USAGE and SESSION MANAGER section headers to the session list panel, with the account email, the usage meter, and a View details link opening the usage dialog
105 * \[VSCode] Added a model pill to the input footer that shows the current model and opens the model picker, with an Effort row and a "More models" page
106 * \[VSCode] Added a collapse toggle to the Ungrouped section of the session list
107 * \[VSCode] Added output style selection to the command menu, including custom styles
108 * \[VSCode] Fixed third-party provider deployments (Bedrock, Vertex, and others) still showing claude.ai-only features (remote sessions, dictation, usage) and calling claude.ai with a leftover login
109 * \[VSCode] Fixed the session list panel's usage meter staying blank after the panel loads; it now shows the last known usage immediately
110 * \[VSCode] Fixed the "Enable Remote Control for all sessions" toggle so turning it on or off applies to sessions that are already open, not only to new ones
111 * \[VSCode] Fixed screen reader announcements: a control character before a fence or heading no longer drops visible lines from speech, and bold markers spanning a heading are no longer mis-paired
112 * \[VSCode] Changed the action menu to list slash commands in a filterable "Slash commands" dialog instead of inline; picking one runs it; the MCP servers dialog gained the same filter box
113 * \[VSCode] Changed "Delete session" to "Archive session": archived sessions move to a collapsible "Archived sessions" group at the bottom of the list with an Unarchive action
114</Update>
115
9116<Update label="2.1.252" description="August 31, 2026">
10117 * Fixed Bash commands failing with "task output swap refused (tasks dir moved or linked)" on some Macs
11118 * Fixed "always allow" not saving in a project that has no .claude/settings.local.json yet
from line 2022
19152022 * Fixed `/autofix-pr` reporting "cannot run on the default branch" when the session is inside a git worktree or another repository
19162023 * Fixed `--resume` picker not showing sessions from the current directory when it isn't a git worktree (e.g., jj workspaces)
19172024 * Fixed Windows hooks that invoke bash explicitly (e.g., `/usr/bin/bash script.sh`) failing with "command not found" or "cannot execute binary file"
1918 * Fixed OpenTelemetry log events (`user_prompt`, `api_request`, `tool_result`, `tool_decision`) being silently dropped when emitted before telemetry initialization completed
1919 * Fixed `claude mcp` list/get/add printing secrets to the terminal: `${VAR}` references are no longer expanded, and credential headers and URL secrets are redacted
1920 * Fixed Workflow agents spawned with `isolation: "worktree"` in background sessions being blocked from editing files inside their own worktree
1921 * Fixed background sessions dispatched from `claude agents` booting on a stale model from the daemon's environment instead of the model in `settings.json`
1922 * Fixed a potential crash when rendering Write tool results after resuming a session
1923 * Fixed completed subagents getting stuck showing as running when an error occurs while finalizing their result
1924 * Fixed `EADDRINUSE` errors from tools that bind Unix sockets under `$TMPDIR` when `CLAUDE_CODE_TMPDIR` is set to a deep path
1925 * Improved terminal rendering performance by stabilizing the layout engine's JIT compilation profile
1926 * Improved rendering performance for large file writes
1927 * \[VSCode] Added a tip suggesting disabling terminal GPU acceleration (or running `/terminal-setup`) to fix garbled glyphs
1928</Update>
1929
1930<Update label="2.1.160" description="June 2, 2026">
1931 * Added a prompt before writing to shell startup files (`.zshenv`, `.zlogin`, `.bash_login`) and `~/.config/git/`, which could otherwise lead to unintended command execution
1932 * `acceptEdits` mode now prompts before writing build-tool config files that grant code execution (`.npmrc`, `.yarnrc*`, `bunfig.toml`, `.bazelrc`, `.pre-commit-config.yaml`, `.devcontainer/`, etc.)
1933 * Edit no longer requires a separate Read after viewing a file with `grep`: single-file `grep`/`egrep`/`fgrep` commands now satisfy the read-before-edit check
1934 * Fixed copy-on-select not writing to the Windows clipboard on WSL — now uses PowerShell interop instead of OSC 52, which terminals like MobaXterm don't support
1935 * Fixed restoring a completed session from `claude agents` dropping chat history and re-running the original prompt
1936 * Fixed background sessions re-attached after overnight retire losing their conversation and re-running the original prompt
1937 * Fixed `claude --bg` occasionally failing with "socket missing" when the background daemon was cold-starting on a loaded machine
1938 * Fixed an issue on Windows where the directory a background session was started in could not be deleted after `claude rm` until the background daemon exited
1939 * Fixed background agents that resumed work being shown under Completed in the agents list
1940 * Fixed `claude agents` freezing for several seconds when returning to the session list due to the auto-updater re-checking on every exit
1941 * Fixed Esc, arrow keys, and typing becoming unresponsive on Windows when attached to a background session or in the agent view while the host is under heavy CPU load
1942 * Fixed background agents emitting terminal sync-output markers to terminals that don't support them (Apple Terminal, tmux), causing render artifacts when entering a running agent
1943 * Fixed mouse wheel scrolling prompt history instead of the transcript right after opening a session from the agents list
1944 * Fixed CJK IME composition appearing at the bottom-left of the screen instead of at the input caret in the `claude agents` view
1945 * Fixed valid `file:///C:/...` links being rewritten to a broken path on Windows terminals with hyperlink support
1946 * Fixed voice mode failing to connect when the project directory or branch name contains non-ASCII or special characters
1947 * Fixed the auto mode unavailability message on third-party providers (Bedrock/Vertex/Foundry) to point to the `CLAUDE_CODE_ENABLE_AUTO_MODE` opt-in instead of incorrectly blaming the model
1948 * Fixed `/effort ultracode` incorrectly blaming the dynamic workflows setting when the model cannot run xhigh; ultracode is no longer offered on models that do not support it
1949 * Fixed model-not-found errors suggesting `--model` when running via the SDK or other hosts where the CLI flag doesn't apply
1950 * Fixed Claude's past replies disappearing from scrollback when resuming a brief mode session with brief mode turned off
1951 * Fixed vim mode `p` pasting on the line below instead of at the cursor when the register was yanked with `v$`
1952 * Improved performance of opening recently-inactive background agent sessions in `claude agents`
1953 * Improved auto mode classifier latency by reducing reasoning on routine actions, lowering the chance of "could not evaluate this action" blocks
1954 * Improved background-session teardown (`claude rm`/`stop`, idle reap) to send SIGTERM to running shell subprocesses before SIGKILL, so cleanup handlers run
1955 * Removed `CLAUDE_CODE_OPUS_4_6_FAST_MODE_OVERRIDE`; the environment variable is now a no-op
1956 * Removed the JetBrains plugin install suggestion from startup
1957 * Renamed the dynamic-workflow trigger keyword from `workflow` to `ultracode`. The word "workflow" no longer triggers a run; asking for one in your own words still works. The trigger keyword is highlighted in violet in the prompt input
1958</Update>
1959
1960<Update label="2.1.159" description="May 31, 2026">
1961 * Internal infrastructure improvements (no user-facing changes)
1962</Update>
1963
1964<Update label="2.1.158" description="May 30, 2026">
1965 * Auto mode is now available on Bedrock, Vertex, and Foundry for Opus 4.7 and Opus 4.8. Opt in by setting `CLAUDE_CODE_ENABLE_AUTO_MODE=1`
1966</Update>
1967
1968<Update label="2.1.157" description="May 29, 2026">
1969 * Plugins in `.claude/skills` directories are now automatically loaded, no marketplace required
1970 * Added `claude plugin init <name>` to scaffold a new plugin in `.claude/skills`
1971 * Added autocomplete for `/plugin` arguments: subcommands, installed plugin names, and plugins from known marketplaces
1972 * `claude agents`: the `agent` field in `settings.json` is now honored for dispatched sessions, with `--agent <name>` to override it
1973 * `EnterWorktree` can now switch between Claude-managed worktrees mid-session
1974 * `tool_decision` telemetry events now include `tool_parameters` (bash commands, MCP/skill names) when `OTEL_LOG_TOOL_DETAILS=1`
1975 * Worktrees managed by Claude are now left unlocked when the agent finishes, so `git worktree remove`/`prune` can clean them up
1976 * Fixed unprocessable images (zero-byte, corrupt) attached via paste, MCP, or dialog crashing the request instead of becoming a text placeholder
1977 * Fixed sandbox network permission prompts appearing in auto and bypass-permissions mode when using the desktop app, IDE extensions, or SDK
1978 * Fixed `claude agents` completed sessions not retiring when an idle subagent was still parked or had leaked a backgrounded shell
1979 * Fixed `claude agents` pressing Esc not cancelling a slow "opening…", leaving the list unresponsive
1980 * Fixed background agent worktrees under `.claude/worktrees/` being orphaned after the 30-day job retention sweep
1981 * Fixed background sessions re-attached after a sleep/wake not telling the model the correct date
1982 * Fixed copy-on-select in `claude agents` not reaching the system clipboard inside tmux with `set-clipboard on` (regression in 2.1.153)
1983 * Fixed `--resume` not reporting background subagents that were running when the previous Claude Code process exited
1984 * Fixed the `--resume` session picker leaving its contents on the terminal after exiting in fullscreen mode
1985 * Fixed `--worktree` and `--worktree --tmux` returning to the canonical repo root instead of the current linked worktree
1986 * Fixed the `/model` picker showing an incorrect "Newer version available" hint when the selected model is already the newest in its family; the pinned-model row now shows the model's description instead of its raw ID
1987 * Fixed literal markdown markers (backticks, asterisks) appearing in the in-progress message text in fullscreen mode
1988 * Fixed the terminal freezing after approving the managed-settings security dialog at startup
1989 * Fixed a rare duplicate line appearing in scrollback after the terminal UI redraws
1990 * Fixed right-click paste duplicating the clipboard in the VS Code, Cursor, and Windsurf integrated terminals
1991 * WSL: fixed image paste (`alt+v` keybinding), screenshot paste on Windows 11, and added support for dragging images from Windows Explorer
1992 * Improved performance of long and resumed conversations by eliminating redundant message-rendering recomputations
1993 * `/terminal-setup` now disables GPU acceleration in VS Code/Cursor/Windsurf integrated terminals to prevent garbled-text rendering
1994 * The Feature of the Week credit-claim status now appears as a notification in the status area instead of a line above the prompt
1995 * `claude agents`: slash-command autocomplete in the dispatch input now matches substrings
1996 * Removed the "bash commands will be sandboxed" startup banner — sandbox status still shows in `/status` and when a command is blocked
1997 * Removed the "/ide for …" startup hint toast
1998 * \[IDE] Fixed clicking Stop while a background subagent is running not actually stopping it
1999 * \[VSCode] Fixed the fast mode indicator not appearing on Opus 4.8
2000 * Pressing backspace right after a workflow trigger keyword now dismisses the workflow request (same as alt+w) instead of deleting a character
2001 * Added a "Workflow keyword trigger" setting in /config to stop the word "workflow" in a prompt from triggering a dynamic workflow
2002</Update>
2003
2004<Update label="2.1.156" description="May 29, 2026">
2005 * Fixed an issue when using Opus 4.8 where thinking blocks were modified, leading to API errors.
2006</Update>
2007
2008<Update label="2.1.154" description="May 28, 2026">
2009 * Opus 4.8 is here! Now defaults to high effort · /effort xhigh for your hardest tasks
2010 * Introducing dynamic workflows: ask Claude to create a workflow and it orchestrates work across tens to hundreds of agents in the background, so you can take on larger, more complex tasks. Run `/workflows` to view your runs
2011 * Fast mode on Opus 4.8 is now available at a fraction of its previous cost: 2x the standard rate for 2.5x the speed
2012 * The lean system prompt is now the default for all models except Haiku, Sonnet, and Opus 4.7 and earlier
2013 * Claude now reserves the multiple-choice question prompt for decisions it genuinely cannot make itself, instead of asking when it already has enough context to proceed
2014 * `/simplify` now runs a cleanup-only review (reuse, simplification, efficiency, altitude) and applies the fixes, instead of running the full `/code-review --fix` bug-hunting review
2015 * Renamed the `/effort` slider labels from "Speed"/"Intelligence" to "Faster"/"Smarter" for clarity
2016 * `claude agents`: type `! <command>` to run a shell command as a background session you can attach to and detach from. Also available as `claude --bg --exec '<command>'`
2017 * `claude agents`: `/logout` now signs you out instead of being sent to a background session
2018 * `←←` to open the agents view now works on Bedrock, Vertex, Foundry, and with telemetry disabled
2019 * Claude in Chrome: pick which connected browser to use via `/chrome` → "Select browser…", or in-chat when a browser action runs with multiple connected
2020 * Plugins can now declare `defaultEnabled: false` in `plugin.json` or a marketplace entry; enable them with `/plugin` or `claude plugin enable`. Dependencies of enabled plugins are still enabled automatically
2021 * The `/plugin` Discover tab now pins plugins whose relevance signals match the current directory with a "suggested for this directory" annotation
2022 * Streaming tool execution is now always enabled, including when telemetry is disabled or on Bedrock/Vertex/Foundry (previously behind a feature flag)
2023 * Stdio MCP server subprocesses now receive `CLAUDE_CODE_SESSION_ID` and `CLAUDECODE=1` in their environment
2024 * `claude mcp list`/`get` now show unapproved `.mcp.json` servers as `⏸ Pending approval` instead of auto-approving and connecting when output is piped
2025 * `/remote-control` autocomplete now shows "Disconnect Remote Control" when Remote Control is already active
2026 * Added Claude Opus 4.8 support and 4.7 → 4.8 migration guidance to the `/claude-api` skill
2027 * Deprecated `CLAUDE_CODE_OPUS_4_6_FAST_MODE_OVERRIDE` (will be removed on 06/01). To use fast mode on Opus 4.6, switch with `/model claude-opus-4-6[1m]` and then `/fast on`
2028 * Improved the auto-mode classifier's detection of data exfiltration, particularly bulk transfers of repository contents
2029 * Fixed `rm -rf $HOME` not being blocked as a dangerous path when `HOME` has a trailing slash
2030 * Fixed `$TMPDIR` resolving to different directories in sandboxed vs unsandboxed Bash commands within the same session
2031 * Fixed unreadable highlighted-row text in `claude agents` when the Claude Code theme doesn't match the terminal background
2032 * Fixed background-agent completion notifications triggering premature "out of context" behavior on some 1M-context models
2033 * Fixed background-session classifier losing the user's goal when a scheduled `/command` fires
2034 * Fixed pinned background sessions respawning every minute after a Claude Code update, causing repeated agent-start notifications and process churn at idle
2035 * Fixed background sessions stuck at "blocked", "running", or "working" not retiring after the idle grace period
2036 * Fixed subagents in background sessions bypassing the worktree-isolation guard and writing to the shared checkout
2037 * Fixed orphaned `claude --bg-pty-host` processes spinning at 100% CPU after the daemon exits on macOS
2038 * Fixed number key shortcuts not working for options shown below the divider in option dialogs
2039 * Fixed `worktree.baseRef: "head"` resolving to the main checkout's HEAD instead of the current worktree's HEAD when spawning subagents or calling `EnterWorktree` from inside a linked worktree
2040 * Fixed a stray leading space on wrapped lines when the previous line ended exactly at the terminal width
2041 * Fixed intermittent terminal rendering corruption in VS Code by capping the number of distinct colors the thinking spinner produces
2042 * Fixed plan file names including `[Image #N]` / `[Pasted text #N]` placeholders when a plan-mode prompt starts with pasted images or text
2043 * Fixed a phantom expand/click affordance on colored tool output: short ANSI-colored lines that fit on screen no longer show a "ctrl+o to expand" hint
2044 * Fixed a single invalid `allowedMcpServers`/`deniedMcpServers` entry in managed settings discarding all managed-settings policy; the bad entry is now dropped with a `claude doctor` warning
2045 * Fixed API 400 errors on models that don't support the effort parameter when `CLAUDE_CODE_ALWAYS_ENABLE_EFFORT` is set
2046 * Windows: Fixed update failures caused by `claude.exe` being in use showing a generic error instead of telling you to close other sessions and retry
2047 * Removed the stale "& for background" hint from the shortcuts help panel
2048 * \[VSCode] Auto mode no longer requires the bypass-permissions setting to appear in the mode picker, and a dismissable notice on the new-session screen explains auto mode the first time it's active
2049 * Fixed the task panel below the prompt showing a stray unselectable "main" row when only a workflow is running
2050 * Fixed /mcp tools list and tool detail rendering when MCP servers have long or multi-line tool names or long descriptions
2051 * Fixed the /model picker not showing fast mode pricing on the Default option for API (pay-as-you-go) users when fast mode is on
2052 * Fixed auto mode incorrectly blocking actions with "could not evaluate this action" when the safety classifier ran out of output tokens while reasoning
2053</Update>
2054
2055<Update label="2.1.153" description="May 28, 2026">
2056 * Added `skipLfs` option to `github`/`git` plugin marketplace sources to skip Git LFS downloads during clone and update
2057 * Claude Code now shows a one-time notice when your npm global install can't auto-update; `/doctor` lists the fixes
2058 * Status line commands now receive `COLUMNS` and `LINES` environment variables so scripts can size output to the terminal width
2059 * `claude agents`: autocomplete in the dispatch input now suggests native slash commands and bundled skills, not just project skills
2060 * `claude agents`: PR column now shows `PR #N` for a single PR or `N PRs` for multiple
2061 * `claude doctor` now shows the result of your last update attempt
2062 * Combined the separate "needs authentication" startup notifications for MCP servers and connectors into a single message
2063 * macOS: background agents now appear as "Claude Code" in Privacy & Security and keep their permission grants across upgrades
2064 * Fixed stateful MCP servers without the optional GET SSE stream rec
2025 * Fixed OpenTelemetry log events (`user_prompt`, `api_request`, `tool_result`, `tool_decision`) being silently dropped when emitted before telemetry initializat
No line in this hunk matches that.