Claude

What's changed - Fixed mid-stream connection drops: partial responses are now preserved instead of showing a raw error, and the spinner no longer gets stuck at "running tool" - Fixed mouse-wheel scrol…

What's changed - Added `Tool(param:value)` syntax for permission rules to match a tool's input parameters (with `*` wildcard), e.g. `Agent(model:opus)` to block Opus subagents - Skills in nested `.cla…

0.109.2 (2026-06-15) Full Changelog: v0.109.1...v0.109.2 Chores * api: remove retired models from API and SDKs ([d4bcfcc](

0.104.2 (2026-06-15) Full Changelog: sdk-v0.104.1...sdk-v0.104.2 Chores * api: remove retired models from API and SDKs ([a942876](

What's changed - Session titles are now generated in the language of your conversation (set the `language` setting to pin a specific language) - Added `footerLinksRegexes` setting for regex-matched li…

What's changed - Added `enforceAvailableModels` managed setting — when enabled, the `availableModels` allowlist also constrains the Default model (a Default that would resolve to a disallowed model no…

What's changed - Added `wheelScrollAccelerationEnabled` setting to disable mouse-wheel scroll acceleration in fullscreen mode - Fixed the `/model` picker hiding the model family that Default resolves…

What's changed - Fixed Fable 5 model names with a `[1m]` suffix not being normalized — Fable 5 includes 1M context by default, so the suffix is now stripped automatically - Fixed a spurious "sandbox d…

What's changed - Sub-agents can now spawn their own sub-agents (up to 5 levels deep) - Amazon Bedrock now reads the AWS region from `~/.aws` config files when `AWS_REGION` isn't set, matching AWS SDK…

0.104.1 (2026-06-09) Full Changelog: sdk-v0.104.0...sdk-v0.104.1 Bug Fixes * api: add `frontier_llm` refusal category ([465e686](

0.109.1 (2026-06-09) Full Changelog: v0.109.0...v0.109.1 Bug Fixes * api: add `frontier_llm` refusal category ([d3a806b](

0.104.0 (2026-06-09) Full Changelog: sdk-v0.103.0...sdk-v0.104.0 Features * api: add support for Managed Agents deployments and environment variable credentials ([d01e38b](

0.109.0 (2026-06-09) Full Changelog: v0.108.0...v0.109.0 Features * api: add support for Managed Agents deployments and environment variable credentials ([47633bf](

What's changed - Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Fable’s capabilities exceed those of any model we’ve ever made generally available. Update to ve…

0.108.0 (2026-06-09) Full Changelog: v0.107.1...v0.108.0 Features * api: add support for claude-mythos-5 and claude-fable-5, with support for server-side fallbacks on refusal ([6b76649](

0.4.2 (2026-06-09) Full Changelog: aws-sdk-v0.4.1...aws-sdk-v0.4.2 Bug Fixes * client: 3p middleware ordering ([2a

0.30.2 (2026-06-09) Full Changelog: bedrock-sdk-v0.30.1...bedrock-sdk-v0.30.2 Bug Fixes * client: 3p middleware ordering ((

0.17.1 (2026-06-09) Full Changelog: vertex-sdk-v0.17.0...vertex-sdk-v0.17.1 Bug Fixes * client: 3p middleware ordering ((

0.103.0 (2026-06-09) Full Changelog: sdk-v0.102.0...sdk-v0.103.0 Features * api: add support for claude-mythos-5 and claude-fable-5, with support for server-side fallbacks on refusal ([cc337f7

What's changed - Added `--safe-mode` flag (and `CLAUDECODESAFE_MODE`) to start Claude Code with all customizations (CLAUDE.md, plugins, skills, hooks, MCP servers) disabled for troubleshooting - Added…

0.107.1 (2026-06-07) Full Changelog: v0.107.0...v0.107.1 Bug Fixes * foundry: send x-api-key header for API-key auth ([1338141](https:

What's changed - Bug fixes and reliability improvements

0.4.1 (2026-06-06) Full Changelog: aws-sdk-v0.4.0...aws-sdk-v0.4.1 Bug Fixes * client: run middleware before request signing ((

0.107.0 (2026-06-06) Full Changelog: v0.106.0...v0.107.0 Features * api: small updates to Managed Agents types ([72923f9](

0.30.1 (2026-06-06) Full Changelog: bedrock-sdk-v0.30.0...bedrock-sdk-v0.30.1 Bug Fixes * client: run middleware before request signing ((

0.102.0 (2026-06-06) Full Changelog: sdk-v0.101.0...sdk-v0.102.0 Features * api: small updates to Managed Agents types ([8ba4f92](

What's changed - Bug fixes and reliability improvements

What's changed - Added `fallbackModel` setting to configure up to three fallback models tried in order when the primary model is overloaded or unavailable; `--fallback-model` now also applies to inter…

0.106.0 (2026-06-05) Full Changelog: v0.105.2...v0.106.0 Features * api: mark Claude Opus 4.1 as deprecated ([85068cc](

0.4.0 (2026-06-05) Full Changelog: aws-sdk-v0.3.1...aws-sdk-v0.4.0 Features * api: mark Claude Opus 4.1 as deprecated ([4ee46f2](

0.30.0 (2026-06-05) Full Changelog: bedrock-sdk-v0.29.2...bedrock-sdk-v0.30.0 Features * api: mark Claude Opus 4.1 as deprecated ([4ee46f2](

0.17.0 (2026-06-05) Full Changelog: vertex-sdk-v0.16.1...vertex-sdk-v0.17.0 Features * api: mark Claude Opus 4.1 as deprecated ([4ee46f2](

0.101.0 (2026-06-05) Full Changelog: sdk-v0.100.1...sdk-v0.101.0 Features * client: add support for middleware ([9b01120](

What's changed - Bug fixes and reliability improvements

What's changed - Added `requiredMinimumVersion` and `requiredMaximumVersion` managed settings — Claude Code refuses to start if its version is outside the allowed range and directs the user to an appr…

What's changed - `claude agents --json` now includes `waitingFor` showing what a waiting session is blocked on (e.g. permission prompt) - `--tools`: explicitly listing Grep/Glob now provides the dedic…

What's changed - `OTELRESOURCEATTRIBUTES` values are now included as labels on metric datapoints, so you can slice usage metrics by custom dimensions like team or repo - `claude agents` rows now show…

What's changed - Added a prompt before writing to shell startup files (`.zshenv`, `.zlogin`, `.bash_login`) and `~/.config/git/`, which could otherwise lead to unintended command execution - `acceptEd…

What's changed - Internal infrastructure improvements (no user-facing changes)

What's changed - Auto mode is now available on Bedrock, Vertex, and Foundry for Opus 4.7 and Opus 4.8. Opt in by setting `CLAUDECODEENABLEAUTOMODE=1`

What's changed - Plugins in `.claude/skills` directories are now automatically loaded, no marketplace required - Added `claude plugin init ` to scaffold a new plugin in `.claude/skills` - Added autoco…

What's changed - Fixed an issue when using Opus 4.8 where thinking blocks were modified, leading to API errors.

0.105.2 (2026-05-29) Full Changelog: v0.105.1...v0.105.2

0.3.1 (2026-06-09) Full Changelog: foundry-sdk-v0.3.0...foundry-sdk-v0.3.1 Bug Fixes * client: 3p middleware ordering ((

0.2.4 (2026-05-29) Full Changelog: foundry-sdk-v0.2.3...foundry-sdk-v0.2.4 Chores * client: update lockfiles to have proper dependencies on standardwebhooks ([5e9b523](

0.100.1 (2026-05-29) Full Changelog: sdk-v0.100.0...sdk-v0.100.1 Bug Fixes * streaming: carry encrypted_content on beta compaction blocks ((

0.105.1 (2026-05-29) Full Changelog: v0.105.0...v0.105.1 Chores * internal: use Trusted Publishing for PyPI releases ([1d04fc5](

What's changed - Opus 4.8 is here! Now defaults to high effort · /effort xhigh for your hardest tasks - Introducing dynamic workflows: ask Claude to create a workflow and it orchestrates work across t…

0.105.0 (2026-05-28) Full Changelog: v0.104.1...v0.105.0 Features * api: Add support for claude-opus-4-8, mid-conversation system blocks, and usage.outputtokensdetails ([f18b014](

0.100.0 (2026-05-28) Full Changelog: sdk-v0.99.0...sdk-v0.100.0 Features * api: Add support for claude-opus-4-8, mid-conversation system blocks, and usage.outputtokensdetails ([bb0bf27](https

What's changed - Added `skipLfs` option to `github`/`git` plugin marketplace sources to skip Git LFS downloads during clone and update - Claude Code now shows a one-time notice when your npm global in…

What's changed - `/code-review --fix` now applies review findings to your working tree after the review, surfacing reuse, simplification, and efficiency suggestions; `/simplify` now invokes `/code-rev…

0.99.0 (2026-05-27) Full Changelog: sdk-v0.98.1...sdk-v0.99.0 Features * support custom file size caps ([814cd4c](https:

0.98.1 (2026-05-26) Full Changelog: sdk-v0.98.0...sdk-v0.98.1 Bug Fixes * client: preserve directory prefix in skills.versions.create uploads ((

What's changed - Internal infrastructure improvements (no user-facing changes)

What's changed - `/usage` now shows a per-category breakdown of what's driving your limits usage — skills, subagents, plugins, and per-MCP-server cost - `/diff` detail view can now be scrolled with th…

0.104.1 (2026-05-21) Full Changelog: v0.104.0...v0.104.1 Bug Fixes * streaming: carry encrypted_content through beta compaction accumulator ((

What's changed - Fixed the Bash tool returning exit code 127 on every command for some users (a regression introduced in 2.1.147)

What's changed - Pinned background sessions (`Ctrl+T` in `claude agents`) now stay alive when idle, are restarted in place to apply Claude Code updates, and are shed under memory pressure only after n…

0.104.0 (2026-05-21) Full Changelog: v0.103.1...v0.104.0 Features * api: Add support for thinking-token-count beta for estimated tokens in thinking block deltas when streaming ([80d0fdf](

0.98.0 (2026-05-21) Full Changelog: sdk-v0.97.1...sdk-v0.98.0 Features * api: Add support for thinking-token-count beta for estimated tokens in thinking block deltas when streaming ([0528d47](ht

What's changed - Renamed `/simplify` to `/code-review` with an optional effort level (e.g. `/code-review high`) - Auto mode no longer suppresses `AskUserQuestion` when the user or a skill explicitly r…

What's changed - Added `claude agents --json` to list live Claude sessions as JSON for scripting (tmux-resurrect, status bars, session pickers) - Added `agentid` and `parentagentid` attributes to `cla…

0.103.1 (2026-05-19) Full Changelog: v0.103.0...v0.103.1 Bug Fixes * runner: skip tool calls SessionToolRunner does not own ([9425

0.97.1 (2026-05-19) Full Changelog: sdk-v0.97.0...sdk-v0.97.1 Bug Fixes * runner: skip tool calls SessionToolRunner does not own ([9987379](

0.29.2 (2026-05-19) Full Changelog: bedrock-sdk-v0.29.1...bedrock-sdk-v0.29.2 Bug Fixes * align @types/node in sub-packages to fix CI build ((

0.16.1 (2026-05-19) Full Changelog: vertex-sdk-v0.16.0...vertex-sdk-v0.16.1 Bug Fixes * align @types/node in sub-packages to fix CI build ((

0.97.0 (2026-05-19) Full Changelog: sdk-v0.96.0...sdk-v0.97.0 Features * client: Add support for self-hosted sandboxes in CMA with sandbox helpers ([659a343](

0.103.0 (2026-05-19) Full Changelog: v0.102.0...v0.103.0 Features * client: Add support for self-hosted sandboxes in CMA with sandbox helpers ([e5625b0](

What's changed - Added `/resume` support for background sessions — sessions started via `claude --bg` or agent view now appear alongside interactive ones, marked with `bg` - Added elapsed duration to…

What's changed - Added plugin dependency enforcement: `claude plugin disable` now refuses when another enabled plugin depends on the target (with a copy-pasteable disable-chain hint), and `claude plug…

What's changed - Added new `claude agents` flags: `--add-dir`, `--settings`, `--mcp-config`, `--plugin-dir`, `--permission-mode`, `--model`, `--effort`, and `--dangerously-skip-permissions` to configu…

What's changed - Added `terminalSequence` field to hook JSON output so hooks can emit desktop notifications, window titles, and bells without a controlling terminal - Added `CLAUDECODEPLUGINPREFERHTTP…

0.102.0 (2026-05-13) Full Changelog: v0.101.0...v0.102.0 Features * api: Add BetaManagedAgentsSearchResultBlock types ([3681f10](

0.96.0 (2026-05-13) Full Changelog: sdk-v0.95.2...sdk-v0.96.0 Features * api: Add BetaManagedAgentsSearchResultBlock types ([08f02f3](

What's changed - Improved Agent tool `subagent_type` matching to accept case- and separator-insensitive values (e.g. `"Code Reviewer"` resolves to `code-reviewer`) - Updated agent color palette - Fixe…

What's changed - Added agent view (Research Preview): a single list of every Claude Code session — running, blocked on you, or done. Run `claude agents` to get started. See - Added `/goal` command: se…

0.101.0 (2026-05-11) Full Changelog: v0.100.0...v0.101.0 Features * aws: Add AWS client for Claude Platform on AWS ([1e70e3a](

0.3.0 (2026-06-05) Full Changelog: foundry-sdk-v0.2.4...foundry-sdk-v0.3.0 Features * api: mark Claude Opus 4.1 as deprecated ([4ee46f2](

0.95.2 (2026-05-11) Full Changelog: sdk-v0.95.1...sdk-v0.95.2

What's changed - Internal fixes

What's changed - [VSCode] Fixed extension failing to activate on Windows

What's changed - Added `CLAUDECODEENABLEFEEDBACKSURVEYFOROTEL` to re-enable the session quality survey for enterprises capturing responses through OpenTelemetry - Added `settings.autoMode.hard_deny` f…

What's changed - Added `worktree.baseRef` setting (`fresh` | `head`) to choose whether `--worktree`, `EnterWorktree`, and agent-isolation worktrees branch from `origin/` or local `HEAD`. Note: the def…

0.95.1 (2026-05-07) Full Changelog: sdk-v0.95.0...sdk-v0.95.1 Chores * redact api-key headers in debug logs ([fad8fee](

What's changed - Added `CLAUDECODESESSIONID` environment variable to the Bash tool subprocess environment, matching the `sessionid` passed to hooks - Added `CLAUDECODEDISABLEALTERNATESCREEN=1` env var…

0.95.0 (2026-05-06) Full Changelog: sdk-v0.94.0...sdk-v0.95.0 Features * api: add support for Managed Agents multiagents and outcomes, webhooks, vault validation ([e0c0e9b](

0.100.0 (2026-05-06) Full Changelog: v0.99.0...v0.100.0 Features * api: add support for Managed Agents multiagents and outcomes, webhooks, vault validation ([3b3deee](

What's changed - Fixed VS Code extension failing to activate on Windows due to a hardcoded build path in the bundled SDK (`createRequire` polyfill bug) - Fixed Mantle endpoint authentication failing w…

What's changed - Added `--plugin-url ` flag to fetch a plugin `.zip` archive from a URL for the current session - Added `CLAUDECODEFORCESYNCOUTPUT=1` env var to force-enable synchronized output on ter…

0.99.0 (2026-05-05) Full Changelog: v0.98.1...v0.99.0 Features * client: allow targeting a workspace for OIDC federation token exchange ([4ba8067](

0.94.0 (2026-05-05) Full Changelog: sdk-v0.93.0...sdk-v0.94.0 Features * client: allow targeting a workspace for OIDC federation token exchange ([bde6620](

What's changed - Bare `/color` (no args) now picks a random session color - `/mcp` now shows the tool count for connected servers and flags servers that connected with 0 tools - `--plugin-dir` now acc…

0.98.1 (2026-05-04) Full Changelog: v0.98.0...v0.98.1 Chores * fix typo in example ([de8ba13](

0.98.0 (2026-05-04) Full Changelog: v0.97.0...v0.98.0 Features * api: improve Managed Agents APIs ([7faf393](

0.93.0 (2026-05-04) Full Changelog: sdk-v0.92.0...sdk-v0.93.0 Features * client: add Workload Identity Federation, interactive OAuth, and auth profiles ([d5d6abd](

What's changed - The `/model` picker now lists models from your gateway's `/v1/models` endpoint when `ANTHROPICBASEURL` points at an Anthropic-compatible gateway - - Added `claude project purge [path]…

0.29.1 (2026-04-30) Full Changelog: bedrock-sdk-v0.29.0...bedrock-sdk-v0.29.1 Bug Fixes * bedrock: throw APIError for error events delivered in chunk frames ((

0.92.0 (2026-04-30) Full Changelog: sdk-v0.91.1...sdk-v0.92.0 Features * api: improve Managed Agents APIs ([ca1bf4a](

What's changed - Fixed OAuth authentication failing with a 401 retry loop when `CLAUDECODEDISABLEEXPERIMENTALBETAS=1` is set

What's changed - Added `ANTHROPICBEDROCKSERVICE_TIER` environment variable to select a Bedrock service tier (`default`, `flex`, or `priority`), sent as the `X-Amzn-Bedrock-Service-Tier` header - Pasti…

What's changed - Added `alwaysLoad` option to MCP server config — when `true`, all tools from that server skip tool-search deferral and are always available - Added `claude plugin prune` to remove orp…

0.91.1 (2026-04-24) Full Changelog: sdk-v0.91.0...sdk-v0.91.1 Bug Fixes * memory: use restrictive file mode for memory files ((

What's changed - `/config` settings (theme, editor mode, verbose, etc.) now persist to `~/.claude/settings.json` and participate in project/local/policy override precedence - Added `prUrlTemplate` set…

0.97.0 (2026-04-23) Full Changelog: v0.96.0...v0.97.0 Features * api: CMA Memory public beta (fc30ebe)

0.29.0 (2026-04-23) Full Changelog: bedrock-sdk-v0.28.1...bedrock-sdk-v0.29.0 Features * bedrock: use auth header for mantle client ((

0.91.0 (2026-04-23) Full Changelog: sdk-v0.90.0...sdk-v0.91.0 Features * api: CMA Memory public beta ([ddf732f](

What's changed - Added vim visual mode (`v`) and visual-line mode (`V`) with selection, operators, and visual feedback - Merged `/cost` and `/stats` into `/usage` — both remain as typing shortcuts tha…

What's changed - Forked subagents can now be enabled on external builds by setting `CLAUDECODEFORK_SUBAGENT=1` - Agent frontmatter `mcpServers` are now loaded for main-thread agent sessions via `--age…

What's changed - `/resume` on large sessions is significantly faster (up to 67% on 40MB+ sessions) and handles sessions with many dead-fork entries more efficiently - Faster MCP startup when multiple…

What's changed - Fixed a crash in the permission dialog when an agent teams teammate requested tool permission

What's changed - Changed the CLI to spawn a native Claude Code binary (via a per-platform optional dependency) instead of bundled JavaScript - Added `sandbox.network.deniedDomains` setting to block sp…

What's changed - Fixed "claude-opus-4-7 is temporarily unavailable" for auto mode

What's changed - Claude Opus 4.7 xhigh is now available! Use /effort to tune speed vs. intelligence - Auto mode is now available for Max subscribers when using Opus 4.7 - Added `xhigh` effort level fo…

0.96.0 (2026-04-16) Full Changelog: v0.95.0...v0.96.0 Features * api: add claude-opus-4-7, token budgets and user_profiles ([0aa2a0d](

0.90.0 (2026-04-16) Full Changelog: sdk-v0.89.0...sdk-v0.90.0 Features * api: add claude-opus-4-7, token budgets and user_profiles ([b26134b](

What's changed - Added `/tui` command and `tui` setting — run `/tui fullscreen` to switch to flicker-free rendering in the same conversation - Changed `Ctrl+O` to toggle between normal and verbose tra…

What's changed - Improved the extended-thinking indicator with a rotating progress hint

What's changed - Added `ENABLEPROMPTCACHING1H` env var to opt into 1-hour prompt cache TTL on API key, Bedrock, Vertex, and Foundry (`ENABLEPROMPTCACHING1HBEDROCK` is deprecated but still honored), an…

0.89.0 (2026-04-14) Full Changelog: sdk-v0.88.0...sdk-v0.89.0 Features * api: manual updates ([57c2a11](

0.95.0 (2026-04-14) Full Changelog: v0.94.1...v0.95.0 Features * api: mark Sonnet and Opus 4 as deprecated ([0c1e773](

What's changed - Show thinking hints sooner during long operations

What's changed - Added `path` parameter to the `EnterWorktree` tool to switch into an existing worktree of the current repository - Added PreCompact hook support: hooks can now block compaction by exi…

0.94.1 (2026-04-13) Full Changelog: v0.94.0...v0.94.1 Bug Fixes * streaming: add missing events (c6a06d8

0.94.0 (2026-04-10) Full Changelog: v0.93.0...v0.94.0 Features * vertex eu region ([b7e157d](

0.16.0 (2026-04-10) Full Changelog: vertex-sdk-v0.15.0...vertex-sdk-v0.16.0 Features * vertex eu region ([19

0.88.0 (2026-04-10) Full Changelog: sdk-v0.87.0...sdk-v0.88.0 Features * vertex eu region ([1933857](

What's changed - Added `/team-onboarding` command to generate a teammate ramp-up guide from your local Claude Code usage - Added OS CA certificate store trust by default, so enterprise TLS proxies wor…

What's changed - Added interactive Google Vertex AI setup wizard accessible from the login screen when selecting "3rd-party platform", guiding you through GCP authentication, project and region config…

0.93.0 (2026-04-09) Full Changelog: v0.92.0...v0.93.0 Features * api: Add beta advisor tool (4297dca)

0.87.0 (2026-04-09) Full Changelog: sdk-v0.86.1...sdk-v0.87.0 Features * api: Add beta advisor tool ([1e99a8d](

What's changed - Added focus view toggle (`Ctrl+O`) in `NOFLICKER` mode showing prompt, one-line tool summary with edit diffstats, and final response - Added `refreshInterval` status line setting to r…

0.28.1 (2026-04-08) Full Changelog: bedrock-sdk-v0.28.0...bedrock-sdk-v0.28.1 Chores * update @anthropic-ai/sdk dependency version ((

0.86.1 (2026-04-08) Full Changelog: sdk-v0.86.0...sdk-v0.86.1 Chores * update @anthropic-ai/sdk dependency version ([03634

0.2.5 (2026-04-08) Full Changelog: aws-sdk-v0.2.4...aws-sdk-v0.2.5 Chores * internal: version bump ([eb97e85](

0.86.0 (2026-04-08) Full Changelog: sdk-v0.85.0...sdk-v0.86.0 Features * api: add support for Claude Managed Agents ([2ef732a](

0.92.0 (2026-04-08) Full Changelog: v0.91.0...v0.92.0 Features * api: add support for Claude Managed Agents ([5b879a7](

What's changed - Fixed Bedrock requests failing with `403 "Authorization header is missing"` when using `AWSBEARERTOKENBEDROCK` or `CLAUDECODESKIPBEDROCK_AUTH` (regression in 2.1.94)

What's changed - Added support for Amazon Bedrock powered by Mantle, set `CLAUDECODEUSE_MANTLE=1` - Changed default effort level from medium to high for API-key, Bedrock/Vertex/Foundry, Team, and Ente…

0.91.0 (2026-04-07) Full Changelog: v0.90.0...v0.91.0 Features * client: Create Bedrock Mantle client ([fd195a2](

0.28.0 (2026-04-07) Full Changelog: bedrock-sdk-v0.27.0...bedrock-sdk-v0.28.0 Features * client: Create Bedrock Mantle client ((

0.85.0 (2026-04-07) Full Changelog: sdk-v0.84.0...sdk-v0.85.0 Features * client: Create Bedrock Mantle client ([2f1f4a

0.90.0 (2026-04-07) Full Changelog: v0.89.0...v0.90.0 Features * api: Add support for claude-mythos-preview ([fc7ddd8](

0.84.0 (2026-04-07) Full Changelog: sdk-v0.83.0...sdk-v0.84.0 Features * api: Add support for claude-mythos-preview ([d4057b0](

What's changed - Added `forceRemoteSettingsRefresh` policy setting: when set, the CLI blocks startup until remote managed settings are freshly fetched, and exits if the fetch fails (fail-closed) - Add…

0.89.0 (2026-04-03) Full Changelog: v0.88.0...v0.89.0 Features * vertex: add support for US multi-region endpoint ([4e732da](

0.15.0 (2026-04-03) Full Changelog: vertex-sdk-v0.14.4...vertex-sdk-v0.15.0 Features * vertex: add support for US multi-region endpoint ([5e5aea7](

0.83.0 (2026-04-03) Full Changelog: sdk-v0.82.0...sdk-v0.83.0 Features * vertex: add support for US multi-region endpoint ([5e5aea7](

What's changed - Added MCP tool result persistence override via `_meta["anthropic/maxResultSizeChars"]` annotation (up to 500K), allowing larger results like DB schemas to pass through without truncat…

What's changed - Added `/powerup` — interactive lessons teaching Claude Code features with animated demos - Added `CLAUDECODEPLUGINKEEPMARKETPLACEONFAILURE` env var to keep the existing marketplace ca…

0.88.0 (2026-04-01) Full Changelog: v0.87.0...v0.88.0 Features * api: add structured stop_details to message responses ([fd82d6b](

0.2.0 (2026-04-01) Full Changelog: aws-sdk-v0.1.0...aws-sdk-v0.2.0 Features * prepare aws package ([f351d4d](https:/

0.27.0 (2026-04-01) Full Changelog: bedrock-sdk-v0.26.4...bedrock-sdk-v0.27.0 Features * support API keys in Bedrock SDK ((

0.82.0 (2026-04-01) Full Changelog: sdk-v0.81.0...sdk-v0.82.0 Features * api: add structured stop_details to message responses ([031328a](

What's changed - Added `"defer"` permission decision to `PreToolUse` hooks — headless sessions can pause at a tool call and resume with `-p --resume` to have the hook re-evaluate - Added `CLAUDECODENO…

0.87.0 (2026-03-31) Full Changelog: v0.86.0...v0.87.0 Features * client: add error type field to APIStatusError ([dd563c0](

0.81.0 (2026-03-31) Full Changelog: sdk-v0.80.0...sdk-v0.81.0 Features * add .type field to APIError for error kind identification ((

What's changed - Added `CLAUDECODENO_FLICKER=1` environment variable to opt into flicker-free alt-screen rendering with virtualized scrollback - Added `PermissionDenied` hook that fires after auto mod…

What's changed - Fixed messages in Cowork Dispatch not getting delivered

What's changed - Added `X-Claude-Code-Session-Id` header to API requests so proxies can aggregate requests by session without parsing the body - Added `.jj` and `.sl` to VCS directory exclusion lists…

What's changed - Added `CLAUDECODEMCPSERVERNAME` and `CLAUDECODEMCPSERVERURL` environment variables to MCP `headersHelper` scripts, allowing one helper to serve multiple servers - Added conditional `i…

What's changed - Added PowerShell tool for Windows as an opt-in preview. Learn more at - Added `ANTHROPICDEFAULT{OPUS,SONNET,HAIKU}MODELSUPPORTS` env vars to override effort/thinking capability detect…

What's changed - Added `managed-settings.d/` drop-in directory alongside `managed-settings.json`, letting separate teams deploy independent policy fragments that merge alphabetically - Added `CwdChang…

What's changed - Added `--bare` flag for scripted `-p` calls — skips hooks, LSP, plugin sync, and skill directory walks; requires `ANTHROPICAPIKEY` or an `apiKeyHelper` via `--settings` (OAuth and key…

What's changed - Added `ratelimits` field to statusline scripts for displaying Claude.ai rate limit usage (5-hour and 7-day windows with `usedpercentage` and `resets_at`) - Added `source: 'settings'`…

What's changed - Added `--console` flag to `claude auth login` for Anthropic Console (API billing) authentication - Added "Show turn duration" toggle to the `/config` menu - Fixed `claude -p` hanging…

0.86.0 (2026-03-18) Full Changelog: v0.85.0...v0.86.0 Features * add support for filesystem memory tools ([235d218](

0.80.0 (2026-03-18) Full Changelog: sdk-v0.79.0...sdk-v0.80.0 Features * api: manual updates ([dd12f1a](

What's changed - Added `StopFailure` hook event that fires when the turn ends due to an API error (rate limit, auth failure, etc.) - Added `${CLAUDEPLUGINDATA}` variable for plugin persistent state th…

What's changed - Increased default maximum output token limits for Claude Opus 4.6 to 64k tokens, and the upper bound for Opus 4.6 and Sonnet 4.6 models to 128k tokens - Added `allowRead` sandbox file…

0.79.0 (2026-03-16) Full Changelog: sdk-v0.78.0...sdk-v0.79.0 Features * add support for filesystem memory tools ([1064199

0.85.0 (2026-03-16) Full Changelog: v0.84.0...v0.85.0 Features * api: chore(config): clean up model enum list ([cce1a5b](

What's changed - Added MCP elicitation support — MCP servers can now request structured input mid-task via an interactive dialog (form fields or browser URL) - Added new `Elicitation` and `Elicitation…

What's changed - Added actionable suggestions to `/context` command — identifies context-heavy tools, memory bloat, and capacity warnings with specific optimization tips - Added `autoMemoryDirectory`…

What's changed - Added `modelOverrides` setting to map model picker entries to custom provider model IDs (e.g. Bedrock inference profile ARNs) - Added actionable guidance when OAuth login or connectiv…

What's changed - Changed tool search to bypass the third-party proxy gate when the environment variable is set (replaces `CLAUDECODEPROXYSUPPORTSTOOL_REFERENCE`, now removed) - Added `w` key in `/copy…

What's changed - Added `/loop` command to run a prompt or slash command on a recurring interval (e.g. `/loop 5m check the deploy`) - Added cron scheduling tools for recurring prompts within a session…

What's changed - Fixed API 400 errors when using `ANTHROPICBASEURL` with a third-party gateway — tool search now correctly detects proxy endpoints and disables `tool_reference` blocks - Fixed `API Err…

What's changed - Added the `/claude-api` skill for building applications with the Claude API and Anthropic SDK - Added Ctrl+U on an empty bash prompt (`!`) to exit bash mode, matching `escape` and `ba…

What's changed - Opus 4.6 now defaults to medium effort for Max and Team subscribers. Medium effort works well for most tasks — it's the sweet spot between speed and thoroughness. You can change this…

What's changed - Added `/simplify` and `/batch` bundled slash commands - Fixed local slash command output like /cost appearing as user-sent messages instead of system messages in the UI - Project conf…

What's changed - Fixed prompt suggestion cache regression that reduced cache hit rates

What's changed - Fixed concurrent writes corrupting config file on Windows

What's changed - Claude automatically saves useful context to auto-memory. Manage with /memory - Added `/copy` command to show an interactive picker when code blocks are present, allowing selection of…

What's changed - Expand Remote Control to more users

What's changed - VS Code: Fixed another cause of "command 'claude-vscode.editor.openLast' not found" crashes

0.84.0 (2026-02-25) Full Changelog: v0.83.0...v0.84.0 Features * api: change array_format to brackets ([925d2ad](

What's changed - Fixed BashTool failing on Windows with EINVAL error

What's changed - Fixed a UI flicker where user input would briefly disappear after submission before the message rendered - Fixed bulk agent kill (ctrl+f) to send a single aggregate notification inste…

What's changed - VS Code: Fixed extension crash on Windows ("command 'claude-vscode.editor.openLast' not found")

What's changed - Added `claude remote-control` subcommand for external builds, enabling local environment serving for all users. - Updated plugin marketplace default git timeout from 30s to 120s and a…

What's changed - Added support for `startupTimeout` configuration for LSP servers - Added `WorktreeCreate` and `WorktreeRemove` hook events, enabling custom VCS setup and teardown when agent worktree…

What's changed - Fixed Ctrl+C and ESC being silently ignored when background agents are running and the main thread is idle. Pressing twice within 3 seconds now kills all background agents. - Fixed pr…

0.26.4 (2026-02-19) Full Changelog: bedrock-sdk-v0.26.3...bedrock-sdk-v0.26.4 Bug Fixes * bedrock: eliminate race condition in AWS credential resolution ((

0.14.4 (2026-02-19) Full Changelog: vertex-sdk-v0.14.3...vertex-sdk-v0.14.4

0.78.0 (2026-02-19) Full Changelog: sdk-v0.77.0...sdk-v0.78.0 Features * api: Add top-level cache control (automatic caching) ([1e2f83d](

0.83.0 (2026-02-19) Full Changelog: v0.82.0...v0.83.0 Features * api: Add top-level cache control (automatic caching) ([a940123](

What's changed - Fixed FileWriteTool line counting to preserve intentional trailing blank lines instead of stripping them with `trimEnd()`. - Fixed Windows terminal rendering bugs caused by `os.EOL` (…

0.77.0 (2026-02-18) Full Changelog: sdk-v0.76.0...sdk-v0.77.0 Features * api: fix shared UserLocation and error code types ([c84038f](

0.82.0 (2026-02-18) Full Changelog: v0.81.0...v0.82.0 Features * api: fix shared UserLocation and error code types ([da3b931](

0.81.0 (2026-02-18) Full Changelog: v0.80.0...v0.81.0 Features * api: Make new tool versions available as top level tool types ([0a385c2](

0.76.0 (2026-02-18) Full Changelog: sdk-v0.75.0...sdk-v0.76.0 Features * api: Make new tool versions available as top level tool types ([25fe41c](

0.75.0 (2026-02-17) Full Changelog: sdk-v0.74.0...sdk-v0.75.0 Features * api: Releasing claude-sonnet-4-6 ([d75e1c0](

0.80.0 (2026-02-17) Full Changelog: v0.79.0...v0.80.0 Features * api: Releasing claude-sonnet-4-6 ([d518d6e](

What's changed - Added support for Claude Sonnet 4.6 - Added support for reading `enabledPlugins` and `extraKnownMarketplaces` from `--add-dir` directories - Added `spinnerTipsOverride` setting to cus…

What's changed - Fixed auth refresh errors

What's changed - Fixed /resume showing interrupt messages as session titles - Fixed Opus 4.6 launch announcement showing for Bedrock/Vertex/Foundry users - Improved error message for many-image dimens…

What's changed - Fixed AWS auth refresh hanging indefinitely by adding a 3-minute timeout - Added `claude auth login`, `claude auth status`, and `claude auth logout` CLI subcommands - Added Windows AR…

What's changed - Improved terminal rendering performance - Fixed fatal errors being swallowed instead of displayed - Fixed process hanging after session close - Fixed character loss at terminal screen…

What's changed - Fixed VS Code terminal scroll-to-top regression introduced in 2.1.37 - Fixed Tab key queueing slash commands instead of autocompleting - Fixed bash permission matching for commands us…

What's changed - Fixed an issue where /fast was not immediately available after enabling /extra-usage

0.79.0 (2026-02-07) Full Changelog: v0.78.0...v0.79.0 Features * api: enabling fast-mode in claude-opus-4-6 ([5953ba7](

What's changed - Fast mode is now available for Opus 4.6. Learn more at

0.74.0 (2026-02-07) Full Changelog: sdk-v0.73.0...sdk-v0.74.0 Features * api: enabling fast-mode in claude-opus-4-6 ([e337981](

What's changed - Fixed a crash when agent teams setting changed between renders - Fixed a bug where commands excluded from sandboxing (via `sandbox.excludedCommands` or `dangerouslyDisableSandbox`) co…

What's changed - Fixed agent teammate sessions in tmux to send and receive messages - Fixed warnings about agent teams not being available on your current plan - Added `TeammateIdle` and `TaskComplete…

0.2.3 (2026-02-05) Full Changelog: foundry-sdk-v0.2.2...foundry-sdk-v0.2.3 Bug Fixes * client: avoid memory leak with abort signals ([53e47df](

0.26.3 (2026-02-05) Full Changelog: bedrock-sdk-v0.26.2...bedrock-sdk-v0.26.3 Bug Fixes * client: avoid memory leak with abort signals ([53e47df](

0.14.3 (2026-02-05) Full Changelog: vertex-sdk-v0.14.2...vertex-sdk-v0.14.3 Bug Fixes * client: avoid memory leak with abort signals ([53e47df](

0.78.0 (2026-02-05) Full Changelog: v0.77.1...v0.78.0 Features * api: Release Claude Opus 4.6, adaptive thinking, and other features ([3ef1529](

0.73.0 (2026-02-05) Full Changelog: sdk-v0.72.1...sdk-v0.73.0 Features * api: Release Claude Opus 4.6, adaptive thinking, and other features ([f741f92](

What's changed - Claude Opus 4.6 is now available! - Added research preview agent teams feature for multi-agent collaboration (token-intensive feature, requires setting CLAUDECODEEXPERIMENTALAGENTTEAM…

0.77.1 (2026-02-03) Full Changelog: v0.77.0...v0.77.1 Bug Fixes * structured outputs: send structured output beta header when format is omitted ((

0.72.1 (2026-01-30) Full Changelog: sdk-v0.72.0...sdk-v0.72.1 Bug Fixes * client: remove OutputFormat exports from index.ts ([bf2cf08](

0.77.0 (2026-01-29) Full Changelog: v0.76.0...v0.77.0 Features * api: add support for Structured Outputs in the Messages API ([ad56677](

0.2.2 (2026-01-29) Full Changelog: foundry-sdk-v0.2.1...foundry-sdk-v0.2.2 Chores * internal: version bump ([24ecc83](

0.26.2 (2026-01-29) Full Changelog: bedrock-sdk-v0.26.1...bedrock-sdk-v0.26.2 Chores * internal: version bump ([24ecc83](

0.14.2 (2026-01-29) Full Changelog: vertex-sdk-v0.14.1...vertex-sdk-v0.14.2 Chores * internal: version bump ([24ecc83](

0.72.0 (2026-01-29) Full Changelog: sdk-v0.71.2...sdk-v0.72.0 Features * api: add support for Structured Outputs in the Messages API ([eeb7fab](

0.76.0 (2026-01-13) Full Changelog: v0.75.0...v0.76.0 Features * allow raw JSON schema to be passed to messages.stream() ([955c61d](