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Anthropic Release Notes

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Anthropic-Produkte (3)

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Claude Code von Anthropic

Claude Code 2.1.233

Unterstützung für GitLab-Merge-Request-URLs bei --worktree und claude agents, neue Optionen wie forward_user_identity, CLAUDE_CODE_TOOL_MEMORY_LIMIT und CLAUDE_CODE_WEBFETCH_CACHE_TTL_MS sowie mehrere Fehlerbehebungen bei Cloud-Sessions, MCP, Hooks und Skills.

  • Added GitLab merge request URL support to the --worktree flag and the claude agents view (where MRs display as !N)
  • Added an opt-in forward_user_identity apps gateway setting on Anthropic upstreams that sends the signed-in user's identity as headers, so a proxy behind the gateway can attribute spend per user
  • Added opt-in memory cgroup support for Bash tool commands on Linux (CLAUDE_CODE_TOOL_MEMORY_LIMIT) so a runaway build can't stall the session
  • Added CLAUDE_CODE_WEBFETCH_CACHE_TTL_MS environment variable to configure the WebFetch session URL cache TTL (default unchanged: 15 minutes)
  • Fixed cloud sessions occasionally being marked as lost when the environment shut down while Claude was waiting on a permission prompt
  • Fixed MCP v2 connections endlessly reopening the subscriptions/listen stream against servers that terminate long-held streams on a fixed timeout (e.g. serverless hosts)
  • Fixed Notification hooks not firing for permission prompts when running under Claude Desktop or VS Code
  • Fixed idle sessions on Linux sometimes keeping one CPU core at 100% when sandboxing is enabled
  • Fixed bundled skill aliases like /checkup and /review reporting "Unknown command" in -p mode or with plugins/MCP loaded when a user or project skill shadows the bundled skill
  • Fixed skill/command argument substitution to prevent argument values from being re-expanded as template markers …

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Claude Code von Anthropic

Claude Code 2.1.232

Subagent-Forking ist standardmäßig aktiv, andere Claude-Sessions lassen sich per @ erwähnen, Sessionnamen sind pro Rechner eindeutig, und es gibt GitLab-Unterstützung für Plugin-Marketplaces sowie erweitertes Secret-Redaction.

  • Subagent forking is now on by default: a subagent_type: "fork" subagent inherits the full conversation and prompt cache, and non-teammate agent spawns in interactive sessions now run in the background by default
  • Type @ in the prompt to mention another Claude session by name; Claude then uses SendMessage to reach that session directly
  • SendMessage now delivers to a bare name that exactly matches one live session, instead of asking to confirm with a ref first
  • Interactive sessions on one machine now keep unique names: starting or renaming a session to a name another live session already uses gives it a name-word-word variant and tells you
  • Added /config rows for "Dialog expiry" and "Messages from your other sessions" (cross-session inbound accept/hold/refuse)
  • Added secret redaction for GitLab token families (glrt-, gloas-, glptt-, glagent-, glimt-, glsoat-, glcbt-, glft-, glffct-) and full redaction of routable glpat-/gldt- tokens; the glab CLI config store gets the same sandbox and credential-path protection as gh
  • Added GitLab support to plugin marketplaces: bare gitlab.com repo URLs (including nested subgroups) now clone like github.com URLs, and clone auth-failure hints name your actual git host
  • Settings: additionalMarketplaces and allowedMarketplaces are now accepted as friendlier aliases for extraKnownMarketplaces and strictKnownMarketplaces …

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Claude Code von Anthropic

Claude Code 2.1.231

Behoben wurde ein MCP-OAuth-Anmeldefehler mit Redirect-URI-Mismatch bei Servern mit vorregistriertem OAuth-Client wie Slack.

  • Fixed MCP OAuth sign-in failing with a redirect URI mismatch for servers that use a pre-registered OAuth client, such as Slack

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Claude Code von Anthropic

Claude Code 2.1.229

Neu sind SSE-Keepalive-Pings für Gateway-Streaming, Plugin-Marketplace-command-Quellen und Hook-Unterstützung für Self-hosted-Runner, zudem wurden mehrere Abstürze und Darstellungsfehler behoben.

  • Documented claude remote-control --continue for resuming the most recent Remote Control session
  • Added server-supplied Claude Code hook support for self-hosted runner sessions, matching managed-environment behavior
  • Added SSE keepalive pings to gateway streaming responses during long thinking pauses, preventing idle-timeout disconnects on Vertex and Bedrock upstreams
  • Added plugin marketplace command sources: a local command (e.g. an IDE) prints the plugin directory, which is re-resolved each session and applied without a restart; mode: "link" uses it in place
  • ListAgents now marks disconnected Remote Control sessions as offline and labels your cloud sessions as cloud
  • Fixed long responses partly disappearing while streaming and being printed twice in the terminal
  • Fixed a crash to the error screen (including on --resume of the affected session) when a tool call had a non-string glob, file_path, or command value
  • Fixed a RangeError crash when a progress bar or markdown table rendered in a very narrow terminal window (could also crash claude --continue/--resume at startup)
  • Fixed a crash on Windows when a tool call or message referenced a file by an extended-length (\\?\) or UNC path
  • Fixed auto mode failing on every tool call for users who disable the attribution header via CLAUDE_CODE_ATTRIBUTION_HEADER (direct Anthropic API connections) …

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Claude Code von Anthropic

Claude Code 2.1.228

Behoben wurden unter anderem ein Redraw-Stillstand, nicht gefundenes Git unter Windows, /tui mit falschem Modell sowie mehrere Fehler bei Self-hosted-Runnern, Session-Cleanup und Plugin-Cache.

  • Fixed interactive sessions that could stop redrawing entirely, while the process kept running, after a rare internal layout error
  • Fixed git / Git Bash not being found on Windows when Claude Code is launched from a parent folder of the git installation
  • Fixed /tui reverting the session to an earlier model when /model had been changed since the last response
  • Fixed cross-session messaging sometimes starting without an inbox in the first session after install or upgrade
  • Fixed Remote Control /resume while connected leaking the resumed conversation's title or history into the connected session
  • Fixed claude self-hosted-runner sessions failing on every fresh runner when the checkout hook fails for a repository the session doesn't push to; that repository is now skipped with a warning
  • Fixed self-hosted runners ending sessions in the gap between a background task finishing and the follow-up turn starting
  • Fixed session cleanup deleting contents inside a project's memory folder
  • Fixed background plugin-cache cleanup deleting a plugin's cache when its only version is a symlinked development checkout
  • Fixed a settings-merge issue where a marketplace entry redefined in a higher-precedence settings tier could inherit another tier's custom headers; marketplace entries now merge as whole entries
  • Fixed the deferred-tools reminder occasionally being sent to the model twice after a skill invocation …

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Claude Developer Platform von Anthropic

Neuer Antwort-Header anthropic-workspace-id in der Claude API

Die Claude API gibt nun den Antwort-Header anthropic-workspace-id mit der ID des Workspaces zurück, auf den der API-Schlüssel oder das Zugriffstoken aufgelöst wurde.

  • The Compliance API now returns transcripts of Cowork and Claude Code sessions that run on your users' machines, in beta for Claude Enterprise organizations. GET /v1/compliance/apps/sessions/local lists sessions across your organization, GET /v1/compliance/apps/sessions/local/{session_id} retrieves one session's metadata, and GET /v1/compliance/apps/sessions/local/{session_id}/messages returns its transcript, all with your existing Compliance Access Key and the read:compliance_user_data scope. See Sessions on users' machines.
  • We've added the anthropic-workspace-id response header to the Claude API. It carries the wrkspc_-prefixed ID of the workspace that the request's API key or access token resolved to, including your organization's Default Workspace. See Identify the workspace behind an API response.

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Claude Code von Anthropic

Claude Code 2.1.227

Fehlerbehebungen bei Feature-Flags mit abgelaufenem Login-Token, Bash unter claude-code-action und /tui, außerdem ein verbessertes Slash-Command-Menü und weniger Event-Loop-Blockaden.

  • Fixed feature flags being evaluated without the user's subscription tier when a session started with an expired login token, which could wrongly prompt Max plan users to enable usage credits for Fable
  • Fixed every Bash command failing under claude-code-action with allowed_non_write_users on GitHub-hosted runners
  • Fixed /tui bringing back a conversation that had been rewound to before its first message
  • Improved slash-command menu: blue now marks only the selected row, matched characters are bolded instead of recolored, and emoji or accented names keep their glyphs
  • Improved performance: fewer event-loop stalls on file-not-found suggestions and at-mention size checks

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Claude Developer Platform von Anthropic

Claude Sonnet 5 bleibt dauerhaft bei 2 / 10 USD pro MTok

Der Einführungspreis von Claude Sonnet 5 (2 / 10 USD pro MTok) wird zum Standardpreis, die geplante Erhöhung auf 3 / 15 USD am 1. September 2026 entfällt.

  • The introductory pricing for Claude Sonnet 5 ($2 / $10 per MTok) is now the standard price: the previously scheduled increase to $3 / $15 per MTok on September 1, 2026 will not occur. See Pricing.

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Claude Code von Anthropic

Claude Code 2.1.225

Die Usage-Warnung unterstützt Gateway-Spend-Limits und claude agents zeigt eine Workspace-Trust-Abfrage, außerdem wurden Fehler bei OAuth-Tokens, MCP-OAuth auf macOS, Auto-Modus und Self-hosted-Runnern behoben.

  • Added gateway spend-limit support to Claude Code's usage warning; the limit-reached message now names the cap, its reset time, and the operator's message (requires the gateway on 2.1.225)
  • Added a workspace trust prompt to claude agents for untrusted directories, matching the behavior of claude
  • Fixed a transient 401 replacing a long-lived CLAUDE_CODE_OAUTH_TOKEN with a stored login's short-lived token, breaking headless sessions until restart
  • Fixed MCP OAuth servers on macOS intermittently failing with a burst of 401 errors, as if never authenticated, after a keychain read timed out
  • Fixed auto mode counting a safety-filter refusal of its own permission check toward the consecutive-block limit; the action is still denied, but the model is now told to move on rather than retry
  • Fixed cross-session messages staying parked without a notice or expiry in headless sessions and during startup
  • Fixed conversation history breaking on Remote Control session resume after very large conversations were compacted
  • Fixed hovering over a session in another project in the agents list changing the directory the next agent starts in
  • Fixed claude self-hosted-runner registering and then failing every session when --base-dir cannot be created or written; it now exits at startup with a clear error
  • Fixed Claude Code on the web sessions being misreported as stuck, re-sending a growing event backlog on every reconnect …

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Claude Code von Anthropic

Claude Code 2.1.224

Neu sind Self-hosted-Umgebungen über claude self-hosted-runner, archive-Plugin-Quellen, sessionübergreifendes SendMessage mit ListAgents, ANTHROPIC_BEDROCK_REGION_PREFIX und erweiterte Sandbox-Credential-Masking-Optionen.

  • Added self-hosted environments: claude self-hosted-runner turns your own machines or containers into a place Claude Code web, mobile, and desktop sessions can run, on Team and Enterprise plans
  • Added archive plugin source: install plugins from a zip over HTTPS without git or npm, with optional SHA-256 pinning
  • Added a cancel-and-confirm step when removing an unavailable paste changes a command's text
  • Added ANTHROPIC_BEDROCK_REGION_PREFIX env var for Bedrock to prefer a specific cross-region inference profile over the AWS_REGION-derived one
  • Added crossSessionInbound and dialogExpiry settings: cross-session messages sent to a session running with bypassed permissions are held for your approval, and messages to other sessions auto-deliver
  • Added sandbox credential-masking options: extract and onExtractNoMatch for structured env values, decode: "jwt" with maskClaims for JWT-aware masking, and awsPairs/sigv4 for AWS SigV4 re-signing; these need network.tlsTerminate and are honored only from user, managed, or --settings settings
  • Added cross-session SendMessage: Claude Code sessions can now message each other, on any of your machines, with ListAgents to discover them (macOS and Linux)
  • Fixed long (>200 char) project paths resolving to another project's session directory under a shared sanitized prefix; session list, rename, fork, delete and /resume no longer cross projects …

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Claude Developer Platform von Anthropic

Managed Agents: Inferenzregion per inference_geo festlegen

Für Claude-Managed-Agents-Agents lässt sich über inference_geo im model-Objekt festlegen, wo die Modellinferenz läuft, wahlweise auch pro Session überschreibbar.

  • You can now set a budget on a Claude Managed Agents session: a hard cap on the session's spend, priced at public list rates. A session that reaches its budget pauses with the budget_reached stop reason instead of starting new model requests; changing or removing the budget resumes it. Deployments accept the same budget and apply it to each session they start. See Session budgets.
  • You can now give a Claude Managed Agents session an advisor: a model at least as capable as the agent's own that the session's primary thread can consult mid-turn for strategic guidance. Configure it as a {"type": "advisor"} entry in the agent's multiagent roster, naming the model to consult. See Give the session an advisor.
  • You can now control where model inference runs for a Claude Managed Agents agent. Set inference_geo inside the model object when you create the agent, or override it for a single session. See Data residency for the available geos and pricing. …

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Claude Code von Anthropic

Claude Code 2.1.223

Owner-Wildcards für Marketplace-Einstellungen, neue Warnungen bei eingeschränkten Subagent-Modellen und ein /teleport-Hinweis in Cloud-Sessions, dazu mehrere Sicherheitsfixes bei Bash-Berechtigungen und Workflow-Sandbox.

  • Added owner wildcard entries ("owner/*") to the strictKnownMarketplaces and blockedMarketplaces managed settings for allowing or blocking all marketplace repos under a GitHub org
  • Added a warning when workflow agents, forked skills, slash commands, or resumed background agents' requested subagent model is restricted and the parent model runs instead
  • Added a /teleport hint in cloud sessions showing how to continue locally with claude --teleport <session id>
  • Fixed a Bash permission bypass where a crafted command could hide parts of itself from permission checks
  • Fixed permission prompts so commands padded with tabs or invisible Unicode can no longer hide part of the command from the approval dialog
  • Fixed workflow scripts being able to use dynamic import() to run code outside the workflow sandbox
  • Fixed a permission gap where an agent definition's bypassPermissions mode ignored the org bypass-permissions disable policy
  • Fixed resuming a session after a mid-session /cd coming back empty
  • Fixed gateway model discovery hiding Claude models registered under provider-prefixed IDs such as vertex_ai/claude-* or bedrock/anthropic.claude-*
  • Fixed modelOverrides keys that aren't Anthropic model IDs being treated as the session's canonical model ID; unknown keys are now ignored as documented …

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Claude von Anthropic

Sicherheits-Scanning für Skills und Plugins von Drittanbietern (Beta)

Enterprise-Pläne können in der Beta ein Sicherheits-Scanning aktivieren, das Skills und Plugins von Drittanbietern beim Hochladen oder Bearbeiten automatisch auf schädliche Inhalte prüft.

Skill and plugin security scanning (beta)

Enterprise plans can now turn on skill and plugin security scanning to automatically check third-party skills and plugins for malicious content when someone uploads or edits them. For more information, see Get started with skill and plugin scanning.

July 2026

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Claude Developer Platform von Anthropic

Inference hooks für Claude Enterprise; Claude Opus 4.1 abgeschaltet

Inference hooks sind für Claude Enterprise im Beta-Status verfügbar: Jeder geregelte Prompt in claude.ai, Cowork und Claude Code wird vor der Inferenz vom AI-Security-Server der Organisation freigegeben oder abgelehnt, und Ablehnungen erscheinen im Compliance Activity Feed; zudem wurde Claude Opus 4.1 (claude-opus-4-1-20250805) abgeschaltet, sodass Anfragen daran Fehler liefern und ein Wechsel auf Claude Opus 5 empfohlen wird.

  • Inference hooks are now in beta for Claude Enterprise organizations. Point Claude at your organization's AI security server, and each governed prompt across claude.ai, Cowork, and Claude Code is held for the server's allow or deny verdict before inference proceeds. Requests are signed, failure handling is configurable, and every denial is recorded in the compliance Activity Feed. See Inference hooks.
  • We've retired the Claude Opus 4.1 model (claude-opus-4-1-20250805). All requests to this model on the Claude API will now return an error. We recommend upgrading to Claude Opus 5. Researchers can request ongoing access through the External Researcher Access Program.

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Claude Code von Anthropic

Claude Code 2.1.222

Worktree-isolierte Sessions können keine destruktiven Git-Befehle mehr gegen den Haupt-Checkout ausführen, und zahlreiche weitere Fehler bei Hooks, /usage, Proxy-Konnektivität und Gateways wurden behoben.

  • Fixed worktree-isolated sessions and their subagents being able to run destructive git commands against the main checkout; isolation now applies to file edits and Bash in every session type
  • Fixed PreToolUse auto-allow hooks bypassing tool restrictions in background agent tasks (summaries, compaction, renames)
  • Fixed /usage-credits on Team and Enterprise showing "you've already sent a usage credit request" for members whose earlier request was dismissed, blocking them from sending a new one
  • Fixed the startup connectivity check hanging and then failing behind an HTTPS proxy; it now uses the same proxy-aware transport as API requests and times out with a clear message
  • Fixed "Connection closed mid-response" errors being reported on responses that had actually completed
  • Fixed /usage overattributing usage to MCP servers: a server's share now reflects only the requests that actually consumed its tool results, instead of every turn after any call to it
  • Fixed sessions not linking to pull requests created after the branch was pushed, including through the GitHub REST API
  • Fixed org-restricted model: opus-style subagent and teammate family aliases dropping to the parent model instead of stepping down to the newest org-allowed model in the family
  • Fixed stream idle timeout firing on custom ANTHROPIC_BASE_URL gateways despite server keep-alive pings arriving on the wire …

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Claude Code von Anthropic

Claude Code 2.1.221

Neu sind die Focus view in VS Code, mode: "mask" für Sandbox-Credential-Dateien und ein prompt-audit-Subcommand im claude-api-Skill, dazu Sicherheits- und MCP-Fixes.

  • [VSCode] Added Focus view: a chat-menu toggle that hides tool activity behind an expandable per-turn summary with a live running-tool indicator, toggled with Ctrl+Alt+F or the "Claude Code: Toggle Focus view" command
  • Added mode: "mask" for sandbox credential files on Linux and WSL — sandboxed commands read a sentinel copy (the whole file, or just the spans captured by an extract regex) while the sandbox proxy substitutes the real value on egress; on macOS file masking falls back to deny
  • Added warnings to claude plugin validate when a marketplace or plugin name would be rejected by Claude Desktop's managed marketplace sync
  • Added a prompt-audit subcommand to the claude-api skill for auditing prompts and tool descriptions for patterns written for older models
  • Fixed a Bash tool permission-check bypass where zsh could execute hidden commands in [[ ]] regex conditionals; affected commands now prompt for permission
  • Fixed PowerShell permission checks mishandling paths containing quote characters on Windows; such paths now prompt for approval
  • Fixed the thinking toggle having no effect for the rest of a session that started with thinking off; disabling an MCP server mid-connect no longer silently reverts
  • Fixed MCP servers from --mcp-config not being connected before the first turn in print mode (-p), which made the model emit tool calls as literal text …

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Claude Developer Platform von Anthropic

Compliance API liefert Transkripte von Cowork-Sessions auf claude.ai

Die Compliance API liefert in der Beta für Claude Enterprise nun Transkripte von Cowork-Sessions, die auf claude.ai im Web oder mobil gestartet wurden, über die Endpunkte GET /v1/compliance/apps/sessions/remote und .../{session_id}/messages.

  • The Compliance API now returns transcripts of Cowork sessions started on claude.ai web or mobile, in beta for Claude Enterprise organizations. GET /v1/compliance/apps/sessions/remote lists sessions and GET /v1/compliance/apps/sessions/remote/{session_id}/messages returns one session's transcript, using your existing Compliance Access Key with the read:compliance_user_data scope. See Sessions in the cloud.

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