Claude Code v2.1.287

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:<text> filter to the agents view that matches session names and tasks; a filter now shows matches in collapsed sections and Enter opens the first match
• Added prompt_text to the OpenTelemetry user_prompt event, a copy of prompt for backends that nest dotted keys; drop or mask it wherever you drop or mask prompt (anthropics/claude-code#70763)
• Added URL prompts from MCP servers on the 2025-11-25 protocol, for example to sign in. If a server no longer connects after this update, add "bareElicitationCapability": true to its MCP config entry
• Windows: Added a startup warning when denying the Bash tool also turns off the PowerShell tool, so Claude has no shell tool
• Self-hosted runner: Added a built-in gh api (REST only) for sessions that use Anthropic-managed git on macOS and Linux machines where the GitHub CLI is not installed
• Fixed fast mode staying off in remote sessions owned by an agent with no user account, even when the organization allows it
• Fixed Remote Control not receiving messages for minutes at a time when a reconnect request got no response; it now gives up after 30 seconds and retries
• Fixed hooks configured with asyncRewake waking Claude over and over with "found issues" notifications when the hook's script file is missing; the broken hook is now reported once
• Fixed tool heartbeats not reaching SDK hosts while the model's response stream was stalled with no data arriving
• Fixed Bedrock and Vertex startup model checks ignoring an enforced availableModels list, which could collapse /model to one Opus row
• Fixed the Claude in Chrome browser picker showing a JSON parse error when Chrome could not be reached
• Fixed picking Fable in /model on a claude.ai login saving the current version's id, so your saved default now follows the newest Fable like Opus and Sonnet do
• Fixed switching between Opus 5.5 and Sonnet 5.5 (/model, opusplan) rewriting earlier MCP tool announcements, which could drop earlier extended thinking
• Fixed Amazon Bedrock Guardrails blocks that arrive mid-response ending the turn with an API error instead of the guardrail's message when the reply began with thinking
• Fixed a dangerous rm (such as one on / or the home directory) losing its always-ask safeguard when the same command also redirected output to a ~ or wildcard path
• Fixed claude -p and SDK sessions repeating a model fallback on every later message after the model was switched while a reply was running
• Fixed a folder's CLAUDE.md being attached a second time after resuming a session or after a compaction
• Fixed background sessions that could not be reopened from claude agents after the agent exited and removed the worktree the session was started in
• Fixed /advisor pairing checks: Sonnet 5.5 can now advise Opus 4.7 and 4.8, and advisors the API would refuse are flagged up front instead of being silently dropped
• Fixed Bash permission prompts showing internal parser names such as "Contains simple_expansion" instead of a plain explanation
• Fixed a cause of fullscreen sessions on slow or busy machines exiting with "Claude Code exited after an unrecoverable interface error" while a scroll key was held in a long conversation
• Fixed organization per-tool permission ceilings being silently dropped for an MCP tool named __proto__
• Fixed Claude being told to page large MCP results saved as JSON with Read's offset and limit, which cannot split one long line
• Fixed the commit attribution reminder being delivered inside a tool result after a compaction
• Fixed screen reader mode leaving the cursor away from the typed text in search boxes (such as /resume and /permissions) and