GitHub Release: anthropics/claude-code v2.1.267 (09.09.2026)

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 Cowork scheduled tasks in the cloud failing at startup for organizations whose managed settings require sandboxing


• Fixed /context and other local command output rendering blank on mobile clients


• Fixed shift+enter and option+backspace not working after reconnecting to a tmux or ssh session inside an agent view


• Fixed the dim last-prompt header not appearing at the top of the conversation when scrolling up in fullscreen mode


• Fixed Workflow agent() calls with large output schemas being refused in auto mode instead of being checked by the safety classifier


• Fixed a case where a marketplace entry path containing a backslash could bypass the containment check for fetched marketplaces on macOS and Linux


• Fixed expired AWS or Google Cloud credentials under a host app such as Claude Desktop retrying ten times with a generic "request failed" before the re-authenticate error appeared


• Fixed resuming a session after /compact or another slash command ran via -p --resume: a spurious "Continue from where you left off." turn is no longer inserted


• Fixed resuming a large session (transcript over 5 MB): parallel tool calls and their hook output are no longer dropped from the reloaded conversation


• Fixed managed allowedHttpHookUrls, httpHookAllowedEnvVars and allowedChannelPlugins to admit nothing, not everything, when unreadable


• Fixed /login on machines whose managed settings require Claude apps gateway sign-in: Esc now closes the dialog instead of doing nothing


• Fixed artifact publishes cut off by a dropped connection mid-upload: they now retry once when Claude Code can tell the upload never completed, instead of reporting an unknown outcome


• Fixed effort: frontmatter on custom commands, skills, and subagents being ignored on models whose default effort is still pinned (Opus 4.7, Opus 4.8, Fable 5)


• Fixed artifact publish failing with an unhelpful error when the page file isn't valid UTF-8 or contains a replacement character (U+FFFD); the error now names the line and column to fix


• Fixed claude agents @ directory menu not listing repositories created after the session started


• Fixed Remote Control clients that join a Claude Desktop or VS Code session showing a stale permission mode until it was changed again


• Fixed claude remote-control exiting and dropping every attached session when its server credential expires (about 30 days after start); the host now re-registers and keeps going


• Fixed the usage-limit warning flickering on and off during a session when requests for different models or modes report different limit windows


• Fixed earlier reasoning being dropped when an MCP server re-sends, or a built-in tool re-renders, a tool the model already loaded


• Fixed a tool that disappears mid-conversation, from a disconnected MCP server or an upgrade, rewriting the tool list and discarding earlier thinking


• Fixed a background worker forked from a conversation adding EnterWorktree to the conversation's tool block mid-session, which broke prompt-cache reuse


• Fixed mid-session MCP and plugin tools being added to the tool list in sessions without ToolSearch, which broke prompt-cache reuse; supported models now receive them as deferred definitions


• Fixed switching models with /model re-sending every tool definition (a prompt-cache miss); commit and PR attribution text now arrives as a conversation note that updates on model changes


• Fixed resumed sessions rewriting the inline tool set when an MCP connector reconnects at a different moment than before


• Fixed resumed sessions re-rendering tool descriptions instead of replaying the recorded ones when the first turn ran a tool


• Fixed prompt-cache misses and dropped extended thinking when a claude.ai connector's tools change between a session and its resume


• Fixed resumed sessions rewriting earlier MCP tool announcements (and dropping extended thinking) before their connectors reconnect


• Fixed a prompt-cache break when a print-mode (-p) conversation is resumed interactively: the system prompt prefix no longer changes


• Improved the /diff panel: it no longer flashes "0 files changed" and a spinner before settling, and its empty state is centered in the panel


• Improved the Bash tool's description guidance so Claude describes what a command does in plain words instead of echoing the command


• Improved sandbox guidance so Claude suggests /copy when clipboard commands such as pbcopy fail inside the sandbox


• Improved --resume first-render time for sessions with many Bash tool calls


• Improved prompt input responsiveness: keystrokes no longer occasionally wait a frame behind spinner or streaming repaints


• Improved prompt-cache stability: subagents and sessions started with --system-prompt or --append-system-prompt now record the system prompt and tool definitions once instead of re-rendering them


• Improved Artifact tool publish errors: when a publish is refused, the message now says why and what to do about it


• Self-hosted runner: Changed --use-anthropic-git-proxy to be reported to the server at registration and to print a warning for each session that still clones through the legacy git proxy


• Gateway: Changed forward_user_identity upstreams to return a 429 as-is to a developer whose email was forwarded, instead of failing over to the next upstream, so the proxy's per-user limits hold


• [VSCode] Fixed the extension host hanging at 100% CPU when forking, editing an earlier message, or rewinding in a conversation whose saved transcript contains a cyclic parent link


• [VSCode] Fixed pasting a screenshot on WSL2/WSLg inserting raw image bytes into the chat input; the image is now attached when the clipboard provides it, otherwise the paste is ignored


• [VSCode] Fixed chat diff blocks always rendering with a dark editor theme; they now follow the active VS Code color theme, including high contrast


• [VSCode] Fixed mixed right-to-left and English text rendering in the wrong order while typing in the message input


• [VSCode] Fixed accepting an edit in the diff view on a file with Windows (CRLF) line endings failing with "String not found in file"


• [VSCode] Fixed @-mentions dropping files whose paths contain spaces


• [VSCode] Fixed the sessions list view failing to load in windows connected over Remote-SSH when the workspace folder exists only on the remote host


• [VSCode] Fixed runaway ripgrep processes when viewing files in large or symlink-heavy workspaces


• [Claude Code on the web] Fixed GitHub Enterprise Server sessions showing your GitHub account as disconnected once its token expired; PR and issue operations now refresh it automatically


• [Claude Code on the web] Fixed gh and GitHub API calls failing in organizations without the Claude GitHub App; they now use your connected GitHub account and say so when none is connected


• [Claude Tag] Added a "Use a custom connector" link to the preset connection forms in Claude Tag admin settings, so you can switch to a custom connection without starting over


• [Claude Tag] Fixed Claude replying "The API rejected the request as invalid" when the organization has run out of usage credits; the reply now says so and explains how to add more


• [Claude Tag] Fixed thread requests to edit or delete a message Claude posted at the channel's top level being answered with a correction instead of reaching the session that posted it


• [Claude Tag] Fixed Connect on Tool access requests under Admin settings > Review requests failing with "Authorization failed" or showing the requested access bundle as deleted