[Release] anthropics/claude-code v2.1.128: v2.1.128

Claude Code v2.1.128 introduces improvements to session management, MCP server handling, plugin architecture, and terminal UI. Key updates include random color selection for sessions, better MCP server visibility with tool counts, support for ZIP plugin archives, and fixes for environment variable inheritance in subprocesses. The release also addresses numerous bugs affecting focus mode, drag-and-drop uploads, markdown rendering, and parallel shell execution.

Key Points

• •Bare `/color` command now randomly selects a session color for improved user experience
• •MCP servers now display tool counts and flag servers with zero tools for better visibility
• •`--plugin-dir` now accepts `.zip` archives in addition to directories, expanding plugin distribution options
• •`--channels` now works with console API key authentication when `channelsEnabled: true` is set
• •Subprocesses no longer inherit `OTEL_*` environment variables, preventing OTEL instrumentation conflicts
• •`workspace` is now a reserved MCP server name; existing servers with this name are skipped with warnings
• •MCP reconnections now summarize re-announced tools by server prefix instead of flooding conversations
• •`EnterWorktree` now creates branches from local HEAD instead of `origin/<default-branch>`, preserving unpushed commits
• •Auto mode classifier errors now include actionable hints (retry, `/compact`, or `--debug`)
• •Fixed critical issues with parallel shell tool calls, large stdin input handling, and MCP tool result image preservation

Workflow Diagram

Concepts