Anthropic's developer agent across terminal, IDE, remote control, and desktop workflows.
Anthropic Claude CodeAnthropic's developer agent across terminal, IDE, remote control, and desktop workflows.
anthropic / Claude Code ## What's changed - Added a warning to `/schedule` when a new cloud scheduled task gets connectors you did not ask for, with how to remove them - Added a check that asks before a web or shell tool call sends your account email address to the network - Added `onFailure: "block"` for Agent SDK hook callbacks, so a callback that fails blocks the action instead of letting it run - Added a notice in Cl
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `CLAUDE_CODE_DISABLE_ULTRATHINK`, which turns the `ultrathink` keyword off - Added pooled group budgets to the Claude apps gateway: one monthly budget that a group's members share, on top of each member's own limit, set with `pooled_budget` on the spend limits admin API - Added `CLAUDE_CODE_DISABLE_LOOPED_CROSS_CERT_DROP` to keep system cross-certificates that certify eac
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `permissions.blockWritesOutsideWorkingDirectories`: Write, Edit and NotebookEdit refuse paths outside the working directories in every permission mode - Added an optional `groups` list to Claude apps gateway upstreams: only developers in the listed IdP groups are sent to that upstream, on failover too - Added `guardrail_trace` to Claude apps gateway Bedrock upstreams, to
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `oidc.user_id_claim` to the Claude apps gateway, to identify people by an id_token claim other than `sub`, such as Microsoft Entra ID's `oid` - Added click to send: in fullscreen, clicking the "to send now" hint under a queued message sends it right away, as its key does - Fixed managed settings and organization policy not being fetched for the rest of the session after s
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `--hold-idle-file` and `--max-hold-min` to `self-hosted-runner`, to keep an idle session while your host reports processes it left running - Added a tip for the Explanatory output style, shown when you ask Claude for explanations - Fixed long freezes at startup and after reading or editing files when a CLAUDE.md file holds a very long list item - Fixed interrupting Claude
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added the Monitor tool and plugin monitors on Bedrock, Vertex, and Foundry, and when telemetry or nonessential traffic is disabled; long foreground sleeps are now blocked there too - Fixed requests failing behind some gateways and compatible servers that reject the `effort-2025-11-24` beta value or mid-conversation system messages; Claude Code now retries without them - Fixed b
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Fixed sandboxed Bash commands on macOS and Linux running the shell's startup files outside the sandbox before each command - Fixed macOS sandbox `denyWrite` glob patterns not applying at a path's real location when the pattern's folder is reached through a symlink - Fixed sandboxed commands and auto-accepted edits being able to modify the MCP config file passed with `--mcp-conf
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Bug fixes and reliability improvements
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `/claude-api api-version` to move Claude API code to API version `2026-10-21` - Added the `claude_code.safety_event` OpenTelemetry event for each tool call a permission rule, auto mode, a safety check, a hook or the sandbox stopped, prompted or sent back - Fixed requests failing with a model-not-found error when `CLAUDE_CODE_DISABLE_1M_CONTEXT` is set and the model is an
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Fixed `claude -p` inside cloud sessions reporting "Not logged in" when started without the session's environment variables - Fixed an API error being replaced by "prompt is too long", and an unneeded compaction, in sessions with many MCP tools
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `sandbox.allowNestedUserNamespaces` so sandboxed commands on Linux can create user namespaces (Chromium, rootless podman); this lets them get around the sandbox's file protections - Added `CLAUDE_CODE_RETRY_WATCHDOG_USAGE_LIMIT_RECHECK_MS` so unattended retry mode (`CLAUDE_CODE_RETRY_WATCHDOG`) notices a usage limit that was lifted before its reset - Fixed every request f
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added a transcript line when a plugin that runs first skips one of your mod's hooks, naming the event and the plugin - Added `decider: "person"` to a mod's `tool.check` answer: only the permission dialog or a host's callback can approve the ask, and it is refused with the mod's reason where nobody can be asked - Added `e.isReadOnly` to a mod's `tool.check` event, set when the t
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Bug fixes and reliability improvements
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `CLAUDE_CODE_AUTO_MODE_MODEL` to choose the model the client-side auto mode classifier uses; it does not change the model for server-side auto mode - Added an `Idle compaction` row to `/config` for turning idle compaction off or back on; the notices shown after an idle compaction now say how to turn it off - Added a notice to `/design-sync` and `/design-login` that standa
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `CLAUDE_CODE_RETRY_WATCHDOG_MAX_USAGE_LIMIT_WAIT_MS` so unattended retry mode (`CLAUDE_CODE_RETRY_WATCHDOG`) ends a request at a usage limit that resets too far away instead of waiting - Added OpenTelemetry tracing guidance to the `claude-api` skill, including setting up trace destinations with the `ant` CLI - Added the `%` motion to vim mode: jump to the matching bracket
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `virtualText` to a mod's prompt decorations: text drawn in the prompt box that never enters the draft or the submitted prompt - Added `cache_creation_5m_tokens` and `cache_creation_1h_tokens` to the OpenTelemetry `api_request` event, splitting cache writes by lifetime - Added `$.ui.view({ agentId })` for mods: shows an agent's transcript in the main view when you ask, and
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `CLAUDE_CODE_DISABLE_FILE_MENTIONS` environment variable: Claude gets the paths of `@` file mentions to read with its file tools, not the files' contents - Added idle compaction in the terminal: a 200K+ token conversation left idle for about 54 minutes is compacted before its one-hour prompt cache expires, so your next message doesn't reprocess it all - Added `CLAUDE_CODE
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added a `code` key to the Claude apps gateway's `managed.policies[]`: the same settings as `cli`, also applied in Claude Desktop's Code tab; beside `desktop`, it turns on Claude Desktop's gateway mode - Added `autoCompactWindow` to subagent frontmatter and `--agents` definitions, so a subagent can auto-compact earlier than the main conversation's window - Added `CLAUDE_CODE_WOR
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `onFailure: "block"` for command and HTTP hooks: a hook that can't start, times out, or exits with an unexpected code blocks the action instead of letting it through - Added Program Status Protocol (OSC 7501) support: terminals that implement it can show whether Claude Code is working, waiting on you, or done - Added quoted text to the `/copy` picker, so a drafted message
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Fixed `prompt` and `agent` hooks written as instructions (such as "Block commands that...") allowing what they should block - Improved how `prompt` hooks on Stop and SubagentStop written as instructions (such as "Carry on if the build is broken") are judged, so Claude is less likely to stop early
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added Claude Haiku 5.5 (`claude-haiku-5-5`), now the default Haiku model on the Anthropic API — 1M context, $0.10/$0.50 per Mtok ($0.50/$2.50 for prompts over 100K) - Added `agentType` to the `subagentStatusLine` payload, so scripts can tell custom subagent types apart - Added `isDeferred` to `$.tool.register` for mods: `false` lists the tool's schema in the prompt from the sta
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `--marketplace ` to `claude plugin install`: adds the marketplace if needed, under the same policy checks as `claude plugin marketplace add`, then installs the plugin from it - Added an `effort` parameter to the Agent tool, so Claude runs a sub-agent at the effort level you ask for - Added `CLAUDE_CODE_OVERLOADED_RETRY_BASE_DELAY_MS` environment variable to set a longer b
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Fixed a regression in 2.1.290 where cloud sessions could drop answers to permission prompts - Fixed a regression in 2.1.288 where the last messages of a session could be lost when quitting
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `serverToolUses` to the result of a mod's `turn.step` hook: the tool calls the API ran itself (the advisor), each with its id, name, input, start and end - Added `agentId` to the `tool.check` event of plugin hooks, so a hook can tell a subagent's permission check from the main session's - Added `ceiling` to the question and verdict a mod's `tool.check` hook reads, naming
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Fixed a deny or ask rule on a nested part of a compound shell command not holding over a user-installed mod's approval on managed machines - Fixed the terminal freezing on short code blocks with many unclosed ` ` tags or deeply nested `${` substitutions - Fixed `Read` deny rules not applying to files @-mentioned, changed, or selected in the IDE through a symlink - [VSCode] Reve
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `$.ui.selection()` for mods: returns the text you last selected in fullscreen mode and, when the selection lies within one transcript row, that row - Added a built-in `gh api` to cloud sessions whose image has no GitHub CLI, and fixed the built-in sending control characters from file names, jq filters or GitHub errors to the terminal - Added recovery for a prompt cleared
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added Claude Mods: plugins may now modify deeper behavior - Added You should know, a built-in mod where a side agent watches your back and flags things you or Claude might miss. Turn it on with `/plugin enable cc-plugin-you-should-know@builtin` (for first-party sessions with telemetry on) - Added an `n: ` filter to the agents view that matches session names and tasks; a filter
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added a count such as "2 of 5" to the permission prompt when several permission requests stack up - Added mouse support for the "N more" rows of lists in fullscreen mode: click one to jump to that end of the list, with hover and pressed states - Fixed several Claude Code processes and IDE extensions each opening a login browser when gcpAuthRefresh or awsAuthRefresh credentials
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `CLAUDE_CODE_DISABLE_WEB_FETCH` environment variable to turn off the WebFetch tool - Added `claude --desktop` to open the Claude desktop app on the current directory, or on a session with `--continue` / `--resume ` - Added `claude plugin configure ` to show a plugin's options and which are unset, or save new values read from stdin with `--values-stdin` - Added ` . = ` to
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added Claude Sonnet 5.5 (`claude-sonnet-5-5`), now the default Sonnet model on the Anthropic API — 1M context, $2/$10 per Mtok with $0.20/Mtok cache reads - Added a "Yes, but ask again next time" answer to auto mode's prompt before a read outside the working directories, so you can allow that one read and still be asked about later ones - Added dollar amounts to the Claude apps
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `x-claude-code-prompt-id` to the gateway hint headers so LLM gateways can group the requests that serve one user prompt; opt in with `CLAUDE_CODE_GATEWAY_HINT_HEADERS=1` - Added `availableModelsMatch` managed setting: with `"exact"`, an `availableModels` entry allows only the model version it names, so new releases stay blocked until listed - Added `deniedModels` managed
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added a `maxProseWidth` setting that caps the width of Claude's prose in wide terminals while tables and code blocks keep the full width - Added a startup notice, and `/status` and `claude doctor` entries, listing telemetry variables in a project's settings files that were ignored or that turned telemetry off - Added the `allowClaudeInChromeWithManagedMcp` managed setting to le
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added Claude apps gateway support for newer Claude Desktop keys in `desktop` policy blocks, including `blockReadsOutsideWorkingDirectories` and `disableBypassPermissionsMode` - Added `assume_role` on Claude apps gateway Bedrock upstreams: the gateway calls Bedrock as an IAM role it assumes through STS, in another AWS account if needed, optionally one session per developer - Add
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added Claude Opus 5.5 (`claude-opus-5-5`), now the default Opus model — 1M context, $4/$20 per Mtok with $0.20/Mtok cache reads - Added mouse support to more lists in fullscreen mode: the wheel scrolls the `/skills` list, and a skill's state options in `/plugin` can be clicked - Added `CLAUDE_CODE_MAX_MCP_DESCRIPTION_LENGTH` to change the 2,048-character cap on MCP tool descrip
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - 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 https://code.claude.com/docs/en/auto-mode-classifier-billing - Added an `Au
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - 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 loc
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Fixed every request failing with `400 … Input tag 'advisor_20260301'` when `ANTHROPIC_BASE_URL` points at a proxy or gateway (2.1.275 regression)
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - 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 whe
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - 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_cod
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `x-claude-code-request-class`, `x-claude-code-agent-type`, `x-claude-code-prev-tool-durations`, `x-claude-code-compaction` and `x-claude-code-context-compacted` request headers for LLM gateways; opt in with `CLAUDE_CODE_GATEWAY_HINT_HEADERS=1` - Added a notification when an MCP server disconnects mid-session and automatic reconnection gives up, pointing at `/mcp` - Added
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Bug fixes and reliability improvements
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added fast mode in Claude Code Remote sessions (cloud and self-hosted runners): the host's fast-mode setting or `/fast` typed in the session applies where your organization allows it - Added mouse support to the `/config` panel in fullscreen mode: the wheel scrolls the settings list, a click on a setting's value changes it, and the row under the pointer is highlighted - Added `
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Fixed read-only git commands in Bash unexpectedly asking for permission after a session had been running for a while (regression in 2.1.269)
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `claude plugin eval`: run a plugin's eval suite against Claude Code and get scored, reproducible results (JSON + HTML report); see `claude plugin eval --help` - Added `/output-style [name]` to list and switch output styles, including over Remote Control and in cloud and other headless sessions - Added a diff of the files a Bash command changed to the Bash tool result when
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added to the Claude apps gateway: with `pricing:` set in `gateway.yaml`, signed-in Claude Code clients receive the same rates through managed settings, so `/cost` and telemetry match the spend meter - Added a startup warning for gateways when `access_control.allow_cidrs` is empty, and a one-time warning the first time a request arrives from a public address - Added the `gateway
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `maxEffortLevel` setting (top-level or per model under `modelSettings`): caps the effort level on every provider, including Bedrock, Vertex and Foundry; users can still pick a lower level - Added `--system-prompt-snapshot off` to render the system prompt fresh on every request instead of reusing the conversation's recorded prompt (for iterating on prompt text) - Fixed Cow
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Fixed a 2.1.265 regression affecting LLM-gateway and proxy setups: the undocumented `CLAUDE_CODE_USE_GATEWAY` environment variable, previously ignored unless `ANTHROPIC_BASE_URL` and `ANTHROPIC_AUTH_TOKEN` were both set, began forcing Cloud-gateway sign-in on its own in 2.1.265, so configurations that set it alongside an API key, `apiKeyHelper`, or custom auth headers failed ev
Verified official source excerpt · Englishanthropic / Claude Code ## What's changed - Added `user.email` and `user.groups` to the telemetry Claude Desktop and Cowork send through a Claude apps gateway, matching terminal sessions - Added support for pointing `--plugin-dir` at a folder of plugins: each child folder with a manifest loads, and children added or removed while running are picked up - Added a 1 GB cap on tool results saved to disk; the in-conversation
Verified official source excerpt · English