Claude Code Changelog @ClaudeCodeLog

Claude Code 2.1.278: additional changes Metadata: • Time since 2.1.277 release: 9h 38m 0s • Bundle file size: +11.7 kB (+0.0%) • Prompt files: +1 (+7.1%) • Prompt tokens: +685 (+4.6%) Prompt token mix by kind: • tools: 72.0%→73.2% • system: 28.0%→26.8% Files: • metadata: github.com/marckrenn/clau… • prompt stats: github.com/marckrenn/clau… More details: github.com/marckrenn/clau…

Claude Code CLI 2.1.278 changelog: New feature: • Added an Auto mode server row to /status showing whether this session's auto mode classifier runs on the server Other change: • Changed auto mode for Claude API and Enterprise users, and on Bedrock, Vertex, Foundry and gateways, to default to the server-side classifier, which does not charge for classifier overhead (CLAUDE_CODE_AUTO_MODE_SERVER=0 opts out on Bedrock, Vertex, Foundry and gateways); warns on billed fallback. See code.claude.com/docs/en/auto-m… Source: github.com/anthropics/cla…

Claude Code 2.1.278 has been released. 2 CLI changes Highlights: • Auto mode defaulted to the server-side classifier to avoid classifier overhead charges • Added 'Auto mode server' to /status showing if classifier runs server-side so overhead isn't charged Full details are in thread ↓

Claude Code 2.1.278 is about to be released #cccnext

Claude Code 2.1.277 additional modifications CLI surface: Added: • commands: design-login • options: --status • models: claude-md, claude-md-and-agents-md, claude-md-or-agents-md, claude-pdf- Removed: • env vars: TASK_MAX_OUTPUT_LENGTH File: github.com/marckrenn/clau… Metadata: • Time since 2.1.276 release: 14h 53m 53s • Bundle file size: +653.2 kB (+1.3%) • Prompt files: +1 (+7.7%) • Prompt tokens: +556 (+3.9%) Prompt token mix by kind: • tools: 70.9%→72.0% • system: 29.1%→28.0% Files: • metadata: github.com/marckrenn/clau… • prompt stats: github.com/marckrenn/clau… More details: github.com/marckrenn/clau…

Claude Code CLI 2.1.277 changelog: New features: • Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under "Project instructions" in /config (not yet on Bedrock, Vertex or Foundry) • Added CLAUDE_GATEWAY_PROXY_IS_EGRESS_BOUNDARY=1 for Claude apps gateways whose only egress is a forward proxy: every outbound request hands the proxy the hostname instead of resolving it locally • Added an optional headers: map on Claude apps gateway upstreams, to send static headers to a proxy you run in front of a provider • Added a line saying a background task's update is waiting when it finishes while a panel such as /tasks is open Fixes: • Fixed claude -p and Agent SDK sessions that could hang with no result after an internal error; they now report the error and exit with code 1 • Fixed conversations failing every request with "text content blocks must be non-empty" when an earlier assistant turn held an empty text block beside other content, including after --resume • Fixed being unexpectedly logged out when an older Claude Code build (for example an IDE extension's bundled CLI) runs on the same machine as the current one • Fixed interactive start-up hanging or showing an error for ANTHROPIC_API_KEY users when ~/.claude.json holds a malformed customApiKeyResponses value • Fixed update checks erroring every 30 minutes, and claude update hanging when a minimum or maximum version is set, if a proxy returns an invalid version; a malformed minimumVersion is now ignored • Fixed claude update on winget- or apk-managed installs reporting "up to date" when the version lookup failed • Fixed claude plugin install sometimes failing and breaking the installed copy when reinstalling a plugin version that a session or another program was using; an unchanged copy is now left alone • Fixed Grep and Glob reporting no matches when the search could not start because the system was out of processes, memory or file handles; they now return an error saying so • Fixed the Write tool silently ending the turn as a declined permission when the target path is an existing directory; it now reports a clear error • Fixed the Edit tool treating an escaped backslash followed by uXXXX text as a \uXXXX escape, which could make an edit of a non-ASCII character rewrite an escaped backslash sequence instead • Fixed the Edit tool reporting "Invalid regular expression: regular expression too large" instead of "String not found in file" when a very large edit containing non-ASCII text did not match the file • Fixed a turn ending early with "Path contains null bytes" when a tool call's file path contained \u0000 written as an escape sequence; escaped control characters now stay as literal text • Fixed background sessions (claude --bg) exiting when a plugin's LSP server exited or closed its stdin • Fixed a crash ("Type error") when opening /mcp or /plugin manage with a malformed claudeAiMcpEverConnected value in ~/.claude.json • Fixed a crash at launch when ~/.claude.json holds a malformed theme value • Fixed a crash ("unrecoverable interface error") when the prompt held text containing terminal color codes, for example a prompt recalled from history or text loaded from the external editor • Fixed a crash when resuming a session whose saved history holds an assistant message stored as a plain string • Fixed sessions on slow or heavily loaded machines sometimes exiting with "Claude Code exited after an unrecoverable interface error" when the first spinner appeared • Fixed a rare case where the screen could stop updating for the rest of the session after an internal rendering error • Fixed a rare case on Windows where a turn could stop with an error such as "Out of memory" right after Claude replied, so that reply's tool calls never ran • Fixed sessions continued after /clear (restart, --continue, --resume) missing part of their first message when a SessionStart hook printed output, causing a full prompt-cache miss • Fixed messages from other agents (such as a subagent's SendMessage) that arrived mid-turn showing up below the "Ran N shell commands" row instead of where they arrived • Fixed the "copied" notice not appearing after drag-selecting text in the fullscreen /resume picker and other panels that cover the prompt area • Fixed ＄TMPDIR expanding empty in Bash commands that run outside the sandbox while sandboxing is enabled • Fixed WebFetch and WebSearch in Cowork cloud sessions not telling Claude why a request was refused, such as a used-up fetch budget or an admin policy • Fixed the Claude apps gateway's telemetry relay ignoring a collector hostname or domain listed in NO_PROXY when a proxy is set • Fixed one malformed strictKnownMarketplaces or blockedMarketplaces entry silently disabling the whole enterprise marketplace policy • Fixed failed auto-updates leaving large staged downloads behind in ~/.cache/claude/staging • Fixed /plugin not stripping terminal control characters from messages on the Installed tab, such as the error of a failed plugin update • Fixed /plugin → Installed and /skills crashing when a skill or legacy command is named like a built-in Object property such as constructor or toString • Fixed /plugin closing with no message when every install in a multi-select failed • Fixed uninstalled plugins reappearing as "failed to load" rows in /plugin Installed, and Remove not clearing such a row • Fixed plugins from the official marketplace being recorded without their commit in installed_plugins.json, and installed_plugins.json keeping the old commit after updating a pinned-commit plugin • Fixed plugin reload previews keeping every previewed copy of a plugin archive unpacked until exit, and overwriting the cached --plugin-url archive a reload falls back to when its download fails • Fixed Remote Control session bookkeeping failing when ~/.claude.json holds a malformed placeholder record • Fixed the error after a revoked claude.ai login blaming an expired Anthropic profile; it now leads with /login • Fixed typed or pasted text occasionally coming out scrambled in the claude agents dispatch input during key repeat or very fast input • Fixed a crash ("unrecoverable interface error") when resuming a session whose saved transcript contains a stop hook summary without a well-formed hook list • Fixed Enter on a selected agent panel row doing nothing when keybindings.json rebinds Enter in the Chat context, for example to chat:queueSubmit • Fixed PDF page reads on Windows failing when the working folder's path is long (about 120 characters or more) • Fixed a headless resume (claude -p --resume, the SDK, a VS Code extension window reload) starting the session's cost and usage totals at zero; headless sessions now save their totals at exit • Fixed project skills from the main repository not loading in --worktree sessions when .claude/skills is untracked • Fixed a sandbox.excludedCommands glob exempting an entire compound Bash command from the sandbox when only one part matched; every part must now match • Fixed resumed subagents and teammates re-rendering the MCP tool definitions they had loaded, which broke prompt caching for that agent • Fixed rate-limited artifact publishes telling Claude to stop retrying; Claude is now told nothing was published and when to send the same publish again • Fixed attachments recorded earlier in a conversation being re-rendered after a resume or relaunch, which dropped extended thinking and missed the prompt cache • Fixed Console sign-in showing only "Request failed with status code 400" when the server refuses to create an API key; it now shows the server's message • Fixed messages typed while Claude is still working sometimes being ignored by the model Improvements: • Improved session start-up for SDK and headless (-p) use: the first turn no longer waits on the per-directory CLAUDE.md lookup • Improved the Claude apps gateway's loopback error messages to name CLAUDE_GATEWAY_ALLOW_LOOPBACK • Improved /plugin Installed: an MCP server listed apart from its plugin now shows which plugin it belongs to • Improved claude plugin install on an already-installed plugin: it now says when the marketplace offers a newer version and names the claude plugin update command • Improved the startup notice overflow line under the logo: it now reads "N more notices hidden" instead of "+N more · /status" • Improved prompt handling: invisible Unicode formatting and tag characters in a prompt are removed and the cleaned prompt is shown for review before it is sent • Improved /ultrareview when there's nothing to review: messages say which case you're in, offer a command that reviews your latest commit, and a new repository's first commit is reviewed in full • Improved artifact link handling so Claude reads claude.ai artifact links with the Artifact tool instead of WebFetch when that tool is available • Improved the dangerous-rm permission prompt to name the flagged rm command and suggest a ＄{VAR:?} guard, so headless runs can recover • Improved the Artifact tool's permission prompts: shorter sentences, pages and artifacts named by title or file name, and links listed after the text Removals: • Removed the background Haiku auto-title request from claude -p runs launched outside an SDK or IDE • Removed the deprecated TaskOutput tool; Claude reads a background task's output file with Read instead, and the taskOutputMaxChars setting and TASK_MAX_OUTPUT_LENGTH no longer have any effect Security/safety changes: • Changed the Bash sandbox instructions on Bedrock, Vertex and Foundry to the first-party wording, which frames the sandbox as the boundary of what the task was given • Changed workflow scripts' computed agent() prompts on Bedrock, Vertex and Foundry to reach the subagent framed as script-authored text, so the safety classifier does not read them as the user Other changes: • Changed Fable to always appear in /model on the Anthropic API; it is greyed out only when your organization's settings disable it • Changed /ultrareview in non-interactive sessions to refuse when the repository has no base branch or shared history • Changed subagent results to reach the main agent under a header marking them as subagent output, with the result indented, so text in a subagent's result cannot pass as the session's own instructions • [VSCode] Added a Sign out row to the panel menu, with /logout in the typed command menu • [VSCode] Added background shells and other running tasks to the agent map, each with a Stop, and a typed /tasks that opens it • [VSCode] Added a Copy response button on responses and a typed /copy • [VSCode] Added a one-time notice when inactive sessions are archived automatically, and an "Unarchive all" action on the Archived sessions group • [VSCode] Added the session's cost and token usage to the Account & usage dialog and the session manager where plan limits do not apply (Vertex, Bedrock, Foundry, API key) • [VSCode] Fixed the "General config" menu row showing /config usage text instead of opening settings, and made typed /mcp, /hooks, /memory, /rewind and similar commands open their dialogs • [VSCode] Fixed the effort slider's level not persisting into later sessions on a model that already had a level saved with /effort • [VSCode] Fixed Auto missing from the mode picker for conversations opened in an already-used panel when the saved model setting is a differently-cased alias such as "Sonnet" • [VSCode] Fixed /fast not saving fast mode as the default, so it was lost when the extension relaunched Claude Code • [Claude Code on the web] Added Personal and Organization sections to the environment picker on Team and Enterprise plans, and admins can now share a personal environment with the organization • [Claude Code on the web] Changed organization environments to open as a read-only summary from the Code tab on Team and Enterprise plans, with editing under Admin settings → Cloud environments • [Claude Code on the web] Fixed a cloud environment saved with Custom network access and no domains silently reverting to Trusted; the dialog now asks for at least one domain • [Claude Code on the web] Changed the admin Claude Code setting labeled "Web" to "Cloud sessions" and removed the redundant read-only Mobile row beneath it • [Claude Tag] Fixed routines created in a Slack channel on an Enterprise Grid org-wide install failing to read other public channels in their workspace when they ran • [Claude Tag] Fixed the "Learn more" links on credential presets in Claude Tag access bundles to open each vendor's credential-setup page instead of a generic API reference • [Claude Tag] Changed the Pylon credential preset in Claude Tag access bundles so admins can point it at Pylon's EU host • [Claude Tag] Fixed Google Cloud credential forms in Claude Tag access bundles: a refused key file now says why, the website and scopes stay locked, and a rejected rotation keeps the pasted key • [Claude Tag] Fixed the network events log in Claude Tag admin settings showing no response status for requests through connections that use AWS signing, client certificates or a custom CA Source: github.com/anthropics/cla…

Claude Code 2.1.277 is available. 87 CLI changes Highlights: • Projects lacking CLAUDE.md now read AGENTS.md for project instructions, enabling agent configs in /config • claude -p and Agent SDK sessions that hung now report errors and exit 1, avoiding silent stalls • Fixed 'text content blocks must be non-empty' errors from prior empty assistant turns so requests proceed Full details are in thread ↓

Claude Code 2.1.277 is about to be released #cccnext

Claude Code 2.1.276: additional changes Metadata: • Time since 2.1.275 release: 5h 55m 28s • Bundle file size: +0.1 kB (+0.0%) • Prompt files: +1 (+8.3%) • Prompt tokens: +440 (+3.1%) Prompt token mix by kind: • tools: 70.0%→70.9% • system: 30.0%→29.1% Files: • metadata: github.com/marckrenn/clau… • prompt stats: github.com/marckrenn/clau… More details: github.com/marckrenn/clau…

Claude Code CLI 2.1.276 changelog: Fix: • Fixed every request failing with 400 … Input tag 'advisor_20260301' when ANTHROPIC_BASE_URL points at a proxy or gateway (2.1.275 regression) Source: github.com/anthropics/cla…

Claude Code 2.1.276 has been released. 1 CLI change Highlights: • Fixed 400 'Input tag "advisor_20260301"' errors when ANTHROPIC_BASE_URL used with a proxy, restoring requests Full details are in thread ↓

Claude Code 2.1.276 is about to be released #cccnext

Claude Code 2.1.275: additional changes CLI surface: Added: • options: --registry • models: claude-test: File: github.com/marckrenn/clau… Metadata: • Time since 2.1.274 release: 21h 5m 33s • Bundle file size: +488.8 kB (+1.0%) • Prompt files: +0 (+0.0%) • Prompt tokens: -3,929 (-22.0%) Prompt token mix by kind: • tools: 52.8%→70.0% • system: 47.2%→30.0% Files: • metadata: github.com/marckrenn/clau… • prompt stats: github.com/marckrenn/clau… More details: github.com/marckrenn/clau…

Claude Code CLI 2.1.275 changelog: New features: • Added the signed-in account to Claude apps gateway sign-in: when the gateway names it, you confirm it before the credential is saved, and /status shows it • Added a send-now key (ctrl+enter, or ctrl+x ctrl+s) that interrupts the current turn and sends all queued messages at once; sent and queued messages show in gray until the model receives them • Added a startup warning when a configured otelHeadersHelper fails, so sessions that silently export no telemetry are noticed • Added syncing of the skills and plugins enabled on your claude.ai account to terminal sessions signed in with it; opt out with syncClaudeAiSkills: false or syncClaudeAiPlugins: false • Added /plugin install --marketplace , which offers to add the marketplace before installing the plugin Fixes: • Fixed a restored memory file's age note changing between requests after a compaction or resume, which caused prompt cache misses • Fixed --forward-subagent-text stream-json and SDK output dropping the messages of subagents spawned by a context: fork skill, and of forked skills invoked by a subagent or another forked skill • Fixed @-mention file suggestions being buried below MCP resources when using a custom fileSuggestion command or typing @./@./ • Fixed fullscreen mode placing background-task completion notices beneath a long turn's collapsed tool row instead of where they arrived; each notice now closes the open row • Fixed claude plugin marketplace update deleting a GitHub marketplace's local copy when the fetch failed and the marketplace was named after its repository • Fixed plugin and marketplace messages, logs and claude plugin marketplace list showing a password or token stored in a git, ssh or marketplace URL • Fixed a resumed cloud session leaving an unanswered question open in the transcript after a queued message superseded it • Fixed vim mode placing the cursor one character right after a dot-repeated "!" or a fast-typed "i!" switched a non-empty prompt into shell mode • Fixed fullscreen mode freezing or blanking for several seconds when scrolling up past a large file diff • Fixed a stray -style closing tag occasionally appearing in responses • Fixed plugin messages, logs and the VS Code plugin dialog showing the wrong server for some git addresses • Fixed a terminal API Error: 400 on every turn for users behind a network gateway that rewrites API error responses when a beta request header is rejected • Fixed sandboxed Bash commands on Linux reporting exit code 0 for failed commands when the shell is zsh • Fixed the Read tool hanging instead of reporting an error when part of a large file could not be decoded under memory pressure • Fixed --resume, the resume picker preview, resumed background agents and the transcript view failing on a session whose saved history contains a malformed task-reminder or @-file attachment entry • Fixed a crash when resuming a conversation whose transcript contains a malformed message entry, and a fullscreen crash when such a conversation received new messages while scrolled up • Fixed sessions failing to resume or start when their saved transcript contains a malformed message content block • Fixed Grep, Glob and @-file suggestions hanging or running out of memory on searches over the 20MB output cap, and system ripgrep reporting "no matches" instead of an error after a flood of warnings • Fixed /rewind in a forked or background session restoring a zero-filled or truncated file when the session's file-history backups could not be fully copied • Fixed fullscreen sessions sometimes exiting with "Claude Code exited after an unrecoverable interface error" when typing fast or holding a key with the slash-command dropdown open • Fixed background sessions crashing and restarting their worker when a command fed through stdin ran on a machine that had run out of file descriptors • Fixed a crash at launch when ~/.claude.json holds a malformed mcpNeedsAuthNoticed value • Fixed --resume and --continue dropping a conversation's earlier thinking when a built-in tool it started with has since been switched off by a server-side flag • Fixed text selected with the mouse in the fullscreen claude --resume session picker never reaching the clipboard • Fixed plugin reload previews replacing a running session's extracted plugin files when the plugin was loaded from a --plugin-dir or --plugin-url archive • Fixed self-hosted runners with --drain-wait-sec losing the final result of a turn that finished during a SIGTERM drain; the runner now waits briefly for the turn to be reported • Fixed SubagentStop hooks with a specific matcher firing for every stopping subagent whose agent type was empty • Fixed sandboxed Bash commands being unable to write to project directories named hooks/ or config/ • Fixed Artifact updates failing with "File not found" after a session resumes on another machine or its scratchpad is cleared: the page's last published version is restored • Fixed /update-config writing Write(path) permission rules, which file permission checks don't match, instead of Edit(path) rules • Fixed four dead documentation URLs (Pricing, Computer Use, Skills, CLI) in the bundled claude-api skill's live-sources table • [VSCode] Fixed the agent map showing agents a crash left unfinished as stopped instead of failed once the session is reopened • [VSCode] Fixed the "Continuing the step" notice not appearing, and the continue limit resetting, after a reload that follows a crash with background tasks still running • [VSCode] Fixed renaming a running session reverting to the generated name (regression in 2.1.269) Improvements: • Improved prompt caching for a --system-prompt that contains a SYSTEM_PROMPT_DYNAMIC_BOUNDARY line: the text above it is now cached globally, as the SDK's array form already is • Improved the /desktop error when Claude Desktop does not open: it now says why and what to do next • Improved the Artifact tool's publish and read results: they now say who can open the page and what the owner's Share menu offers • Improved artifact publish results: they name the tab icon sent, warn when the page contains a NUL byte, and retry a flaky fetch of the newer page to merge after a stale publish • Improved pasted and attached images: they are now saved where Claude can open them as files without a permission prompt, including in Desktop and VS Code • Improved the Artifact tool's guidance so Claude updates a shared artifact in place when you were given edit access to it, instead of publishing a separate copy • Improved plan-usage reads: editor windows and non-interactive sessions on one machine now share a read made in the last minute instead of each calling the usage endpoint • Improved the ListPlugins tool description so Claude knows it lists plugins enabled on your claude.ai account, not plugins installed locally with /plugin • Improved responsiveness when the terminal is slow or paused: output no longer falls further behind while the terminal catches up • Improved Write and Edit results for files in the synced account-skills folder: they now say the change is not saved to your account and how to save it Removal: • Removed the startup notice that told you a one-off scheduled routine had run since your last session Security/safety changes: • Changed hosted sessions to keep an unanswered permission prompt up after a container restart, instead of asking again • Changed Claude in Chrome in auto mode to skip the extension's per-site check for classifier-approved calls, as bypass mode does, fixing browser_batch "Permission denied" after a redirect • [VSCode] Fixed the transcript creeping toward the bottom in small steps while a permission card waits and content keeps arriving • [VSCode] Fixed rewound and forked conversations not keeping the permission mode you had picked for the original conversation • [VSCode] Fixed unreadable code in the plan preview and the Hooks and Permission rules dialogs with the High Contrast Light theme Other changes: • Updated /logout for Claude apps gateway sign-ins to also end the session on gateways that advertise token revocation • Changed the Artifact tool to ask for a one-word tab icon on a first publish instead of an emoji favicon • Changed plugins installed from an npm source to be fetched with npm pack --ignore-scripts and integrity-verified, so a package's install scripts no longer run • Changed scheduled and Run now routine runs to save data to, and republish the page of, an artifact you can edit without asking; public artifacts, first publishes and deletes still ask • [VSCode] Added viewing, editing and deleting a saved memory inside the Memory dialog • [VSCode] Added sending an attached image without typing any text • [VSCode] Added a Retry link to the MCP servers dialog when the server list fails to load • [VSCode] Added accept and reject buttons under each change in the proposed-change diff tab, so an edit can be reviewed change by change • [VSCode] Fixed an empty CLAUDE_CONFIG_DIR entry in the environmentVariables setting making Claude Code keep its files in the workspace • [VSCode] Fixed plugin install links opening the Manage plugins dialog for plugin names and marketplace addresses that can't be used in a link • [VSCode] Fixed Remote Control staying shown as connected after a turn-off that Claude Code reported as failed; it now shows as off • [VSCode] Fixed the scroll to the bottom on send stopping short of the reply when the reply starts arriving during the scroll • [VSCode] Fixed the session list showing when a session was last reopened, such as after a window reload, instead of when its last message was sent • [VSCode] Fixed "Fork conversation from here" failing on the message right after one sent while Claude was working • [VSCode] Fixed the prompt cache clock showing too few minutes after reopening a session with a message sent while Claude was working • [VSCode] Fixed a background agent that finished while Claude was running a tool losing its completion notice, and its result on the agent map, after a window reload • [VSCode] Fixed a rare case where text selected in a git-ignored file could be sent to Claude after the extension was unresponsive for several seconds • [VSCode] Fixed some claude.ai/code sessions opening in VS Code as an empty conversation with no messages • [VSCode] Fixed slash commands typed while Claude is responding being sent to the model as text instead of running once the response finishes • [VSCode] Fixed /remote-control being ignored while Remote Control is still connecting: running it again now turns Remote Control off immediately • [VSCode] Fixed the conversation pulling you back to the bottom while a reply streams after you scroll up, and added a claudeCode.scrollToBottomOnSend setting to turn off the jump on send • [VSCode] Fixed the Manage plugins dialog showing a password or token that was typed into a marketplace URL • [VSCode] Improved the agent map: the pill counts running agents and turns red after a failure, the main agent stays in view while the map scrolls, and agents sort by state then end time • [VSCode] Changed New session in a Claude editor tab to open in the sidebar when Preferred Location is set to Sidebar, instead of always opening another tab • [VSCode] Changed a message sent while Claude is working to wait at the bottom of the conversation until Claude starts on it • [Claude Code on the web] Added a "New routine" button to the page shown when a routine link no longer resolves, next to the link back to your routines list • [Claude Code on the web] Fixed routine "paused" and "on hold" notifications being cut off mid-sentence; the paused-subscription notice now says to turn the routine back on yourself • [Claude Code on the web] Fixed cloud environments with a very long allowed-domains list saving fine and then failing every session start; saving now fails up front and says how much to trim • [Claude Code on the web] Fixed Claude's guidance when a cloud session on a personal account is denied GitHub access: it now links to claude.ai/connect-github instead of an admin settings page • [Claude Code on the web] Improved what Claude tells you when asked to edit, delete or run a routine it didn't create: it now links to the routine's page so you can do it yourself • [Claude Tag] Added attach conditions for access bundles in Claude Tag settings: an Owner can let a bundle also apply in channels with guests or Slack Connect channels, not just member-only • [Claude Tag] Added Amazon CloudWatch, CloudWatch Logs, Amazon SNS, Google Cloud Monitoring and Cloud Logging presets to an access bundle's Credentials tab in Claude Tag admin settings • [Claude Tag] Added Datadog presets for the US3, AP1, AP2 and US1-FED sites; new Datadog connections are now limited to Datadog's read and query API routes • [Claude Tag] Fixed S3 uploads from recent AWS CLI and SDK versions failing with a 502 error when sent through an AWS connection • [Claude Tag] Fixed Claude treating a channel as inactive, and skipping untagged messages there, while it was still posting in that channel from a routine or a thread • [Claude Tag] Fixed a thread's "Claude [task]" display name reverting to plain "Claude" after the session behind that thread was refreshed or restarted • [Claude Tag] Fixed the model you switched to in a Slack thread silently reverting to the channel's default after that thread's session was restarted or refreshed • [Claude Tag] Fixed Claude sometimes replying twice when another app or bot @mentioned it in a top-level channel message • [Claude Tag] Improved Claude's notices in Enterprise Grid channels shared across workspaces: they now say when no workspace is set up yet, or why only organization defaults apply • [Code Review] Fixed reviews occasionally dropping part of their analysis when one of the reviewing agents returned its findings in an unexpected format • [Code Review] Fixed pull requests with more than 100 Claude reviews getting a full re-review on every clean merge from the base branch instead of the lighter merge-focused review Source: github.com/anthropics/cla…

Claude Code 2.1.275 is now available. 96 CLI changes Highlights: • Added send-now (Ctrl+Enter or Ctrl+X Ctrl+S) to interrupt a turn and immediately send all queued messages • Signed shells sync Claude skills and plugins, showing account tools; opt out: syncClaudeAiSkills/Plugins:false • Plugin and marketplace outputs strip secrets from git/ssh/marketplace URLs to prevent credential leaks Full details in thread below

Claude Code 2.1.275 is about to be released #cccnext

Claude Code 2.1.274 additional modifications CLI surface: Added: • env vars: CLAUDE_CODE_STARTUP_FAILURE_RESULTS • models: claude-code-sparse-paths.json, claude-proactive, claude-test, claude-test-draft, claude-test-execute, claude-test:author, claude-test:runner Removed: • models: claude-proactiveN File: github.com/marckrenn/clau… Metadata: • Time since 2.1.273 release: 1d 4h 33m 10s • Bundle file size: +616.3 kB (+1.3%) • Prompt files: -4 (-25.0%) • Prompt tokens: -4,669 (-20.7%) Prompt token mix by kind: • tools: 81.4%→52.8% • system: 18.6%→47.2% Files: • metadata: github.com/marckrenn/clau… • prompt stats: github.com/marckrenn/clau… More details: github.com/marckrenn/clau…

Claude Code CLI 2.1.274 changelog: New features: • Added a visible warning when memory usage is critical, with steps to free memory or restart safely • Added CLAUDE_CODE_MCP_STARTUP_WAIT_MS to bound how long the first non-interactive turn waits for connecting MCP servers (0 = don't wait) • Added effort attribute to the claude_code.llm_request OpenTelemetry trace span, matching the api_request event • Added claude_code.managed_settings_resolved OTel event: managed-settings sources and policy helper state; redacted settings and digests with OTEL_LOG_MANAGED_SETTINGS=1 • Added store.connect_timeout_seconds to the Claude apps gateway config to lengthen the Postgres connect timeout (default 5 seconds), and improved the boot error when the database is unreachable to point to store.postgres_url and the configured timeout • Added enduser.sub, the IdP subject, to the telemetry Claude Desktop and Cowork send through a Claude apps gateway • Added a Claude apps gateway warning when a replica has more requests open than the 256 it sends upstream at once, and a startup log line showing that limit • Added click-to-expand for collapsed teammate and agent messages in fullscreen mode Fixes: • Fixed sessions getting stuck endlessly retrying "unexpected tool_use_id" 400 errors: corrupted transcripts now self-heal where possible, and otherwise a clear error (with a /rewind hint) ends the loop • Fixed MCP servers configured as http that only speak legacy HTTP+SSE failing to connect when they answer the first request with 422 or another 4xx error • Fixed Streamable HTTP MCP tool calls timing out after about 5 minutes even when a longer per-server timeout was set • Fixed MCP prompts and resources not refreshing when a server sends list-changed notifications without declaring listChanged • Fixed MCP tool calls refused with 403 insufficient_scope being reported as an expired sign-in: the error now names the missing permissions and points to /mcp re-authentication • Fixed hook-driven sessions (such as an active /goal) ending with "Prompt is too long" instead of compacting when the context overflowed again after a reactive compaction • Fixed an active /goal being lost when resuming (--continue / --resume) a session that had compacted • Fixed claude agents losing --model, --effort, --permission-mode, --allow-dangerously-skip-permissions and --agent after an auto-update relaunch • Fixed a per-turn slowdown when a language server publishes project-wide diagnostics for thousands of files • Fixed subagents with model: "opus" on Bedrock, Vertex or Foundry leaving the session's model when its id has no recognizable model family (unless ANTHROPIC_DEFAULT_OPUS_MODEL is set) • Fixed self-hosted runner sessions failing every turn with a 401 after a few failed token refreshes, until the next scheduled refresh; the runner now keeps retrying, and fetches a new token after a 401 • Fixed clickable links to local file paths doing nothing in VS Code and other terminals that require a file:// URI • Fixed the transcript renumbering ordered lists in your own messages (typing "3. 2. 1." displayed "3. 4. 5."); numbers and "N)" markers now show as typed • Fixed AskUserQuestion preview notes being attached to a previously chosen option instead of the highlighted one • Fixed AskUserQuestion preview mode dropping the highlighted option when submitting a note with Enter • Fixed a resumed background agent keeping half of an interrupted tool batch when one of its calls was approved with a message • Fixed a local claude -p --resume started with CLAUDE_CODE_RESUME_INTERRUPTED_TURN not reporting background tasks the previous process left unfinished • Fixed the first turn of a cloud session sometimes starting without the tools of an SDK-hosted MCP server that was still connecting • Fixed background agent notifications claiming the agent had no live background work when it was still waiting on its own background task and would resume • Fixed error hints in Claude Desktop sessions to suggest slash commands like /usage-credits instead of CLI flags that cannot be used there • Fixed /schedule saving a routine's prompt without its message role when Claude writes the routine in the shape that listing routines returns • Fixed /status not showing the apiKeyHelper failure that its own error banner told you to check • Fixed /fast on in non-interactive sessions reporting on and then turning off under an organization's managed fast mode policy; it now says the organization has disabled it • Fixed the Artifact tool asking you to approve an update to an artifact that it then refused because the session had not read the latest version • Fixed Cowork and claude.ai cloud sessions with network access on treating reads of a teammate's artifact as if network access were off • Fixed a plugin or marketplace directory with no git repository of its own taking its version from an enclosing git repository, such as a git-managed ~/.claude • Fixed --strict-mcp-config with an empty --mcp-config holding the first non-interactive turn for up to MCP_TIMEOUT on incidental MCP servers • Fixed Stop prompt hooks re-sending their whole prompt on every block in a conversation; repeat blocks now name the condition with a 500-character label • Fixed extra empty editor windows opening at startup on Linux under Wayland when running inside the Cursor or VS Code terminal • Fixed an unhandled promise rejection in the Claude apps gateway when Postgres drops a connection during a spend check • Fixed Claude apps gateway cutting every open stream on SIGTERM: it now lets in-flight requests finish for up to 25 seconds before exiting (CLAUDE_GATEWAY_DRAIN_TIMEOUT_MS) • Fixed installed_plugins.json being rewritten on nearly every start-up when plugin policy comes from remote managed settings, which made Claude Desktop reload every open session's plugins • Fixed headless and SDK sessions making a separate model call for every background task that finished; completions already queued are now answered by one call • Fixed the Bash tool re-sourcing the shell profile (a multi-second stall on the next command) after every plugin reload; it now does so only when the plugins' bin/ directories changed • Fixed plugins with a top-level ＄schema in hooks/hooks.json showing an "unknown key" notice • Fixed MCP connection errors and the MCP login tool's description showing secrets resolved from ＄{VAR} placeholders in MCP configs • Fixed Bash permission checks for commands that loop over or assign certain special shell variables; these commands now ask for permission • Fixed worktree-isolated sessions accepting Bash commands with certain nested shell expansions; these are now refused • Fixed the Edit permission prompt preview sometimes showing a different location than the approved edit in files with multi-byte characters • Fixed background commands being stopped after 30 idle minutes on machines under mild memory pressure; they're now stopped only when memory is critically low, and the debug log says why • Fixed a message a subagent sends to the main session disappearing from the Claude Desktop transcript after a relaunch • Fixed a plugin loaded from a .zip being served from a stale extraction after several overlapping reloads • Fixed a sub-agent's progress summary being replaced by a runaway multi-paragraph reply Improvements: • Improved startup in --input-format stream-json sessions: the first turn no longer waits up to 2s for still-connecting MCP servers whose tools tool search defers; they arrive on a later turn • Improved Monitor tool notifications: a script's final output and its exit now arrive as one notification instead of two, saving a model turn • Improved Artifact tool errors: when you are not signed in to claude.ai the terminal now says so on the first attempt, and Claude is told to stop retrying a rejected call sooner • Improved artifact publishing: a publish built on an older version is stopped before it is sent, with the newer page to merge • Improved safety checks before removing an agent worktree that contains submodule checkouts • Improved OTEL_LOG_RAW_API_BODIES=file:

Claude Code 2.1.274 is now available. 108 CLI changes Highlights: • Shows critical-memory warning with steps to free memory or restart safely, reducing crash risk • Sessions stop looping on 'unexpected tool_use_id' 400s; transcripts self-heal or show a clear /rewind error • 403 insufficient_scope errors now show missing permissions and link to /mcp for re-auth to speed fixes Full details are in thread ↓

Claude Code 2.1.274 is about to be released #cccnext