Claude-Code v2.1.76 adds MCP elicitation, worktree optimizations, and numerous fixes

What's new in Claude-Code v2.1.76

Claude-Code v2.1.76 is a significant update that adds new capabilities for MCP servers, improves monorepo workflows, and addresses numerous bugs affecting tool usage, session management, and user experience.

Key additions

• MCP elicitation support: MCP servers can now request structured input during tasks via interactive dialogs using form fields or browser URLs
• New hooks: Added Elicitation and ElicitationResult hooks to intercept and override responses before they're sent back to servers
• Session naming: Added -n / --name <name> CLI flag to set a display name for sessions at startup
• Monorepo optimization: Added worktree.sparsePaths setting for claude --worktree to check out only needed directories via git sparse-checkout in large monorepos
• Compaction hook: Added PostCompact hook that fires after compaction completes
• Effort control: Added /effort slash command to set model effort level
• Quality surveys: Added session quality survey system where enterprise admins can configure sample rate via feedbackSurveyRate setting

Notable fixes

• Deferred tools: Fixed deferred tools (loaded via ToolSearch) losing input schemas after conversation compaction, which caused array and number parameters to be rejected with type errors
• Slash commands: Fixed showing "Unknown skill" and not finding soft-hidden commands when typing exact names
• Plan mode: Fixed asking for re-approval after plan was already accepted
• Voice mode: Fixed swallowing keypresses while permission dialog or plan editor was open, and fixed /voice not working on Windows when installed via npm
• Context limits: Fixed spurious "Context limit reached" when invoking a skill with model: frontmatter on a 1M-context session
• Model errors: Fixed "adaptive thinking is not supported on this model" error when using non-standard model strings
• Bash permissions: Fixed Bash(cmd:*) permission rules not matching when quoted arguments contain #, and fixed "don't ask again" dialog showing full raw command for pipes and compound commands
• Auto-compaction: Fixed retrying indefinitely after consecutive failures — now stops after 3 attempts with a circuit breaker
• MCP: Fixed reconnect spinner persisting after successful reconnection
• LSP plugins: Fixed not registering servers when LSP Manager initialized before marketplaces were reconciled
• Clipboard: Fixed copying in tmux over SSH — now attempts both direct terminal write and tmux clipboard integration
• Export: Fixed /export showing only filename instead of full file path in success message
• UI issues: Fixed transcript not auto-scrolling to new messages after selecting text, and Escape key not working to exit login method selection screen
• Remote Control: Fixed sessions silently dying when server reaps idle environment, rapid messages being queued one-at-a-time instead of batched, stale work items causing redelivery after JWT refresh, and bridge sessions failing to recover after extended WebSocket disconnects

Performance and UX improvements

• Worktree startup: Improved --worktree startup performance by reading git refs directly and skipping redundant git fetch when remote branch is already available locally
• Background agents: Killing a background agent now preserves its partial results in conversation context
• Model fallback: Notifications are now always visible instead of hidden behind verbose mode, with human-friendly model names
• Terminal themes: Improved blockquote readability on dark themes — text is now italic with left bar instead of dim
• Worktree cleanup: Worktrees left behind after interrupted parallel runs are now automatically cleaned up
• Session titles: Remote Control session titles now derived from first prompt instead of showing "Interactive session"
• Voice improvements: /voice now shows dictation language on enable and warns when language setting isn't supported for voice input
• Plugin directories: Updated --plugin-dir to only accept one path to support subcommands — use repeated --plugin-dir for multiple directories
• VSCode fix: Fixed gitignore patterns containing commas silently excluding entire filetypes from the @-mention file picker

This release focuses on improving MCP server interactions, fixing persistent tool and session management issues, and enhancing the developer experience across terminal, voice, and remote workflows.