[Release] anthropics/claude-code v2.1.208: v2.1.208

Claude Code v2.1.208 is a major release featuring accessibility improvements (screen reader mode), enhanced vim keybindings, corporate process wrapper support, and extensive bug fixes across session management, file operations, memory optimization, and streaming. Key improvements include better multi-select UI interactions, automatic fast-mode restoration, background agent reliability, and significant performance optimizations reducing CPU overhead and memory usage by up to 79x in edit-heavy sessions.

Key Points

• •Screen reader accessibility: Added opt-in plain-text rendering via `claude --ax-screen-reader`, `CLAUDE_AX_SCREEN_READER=1`, or settings configuration
• •Vim mode enhancement: New `vimInsertModeRemaps` setting enables two-key sequences (e.g., `jj`) to map to Escape in insert mode
• •Corporate security: `CLAUDE_CODE_PROCESS_WRAPPER` env var enforces wrapper executable for all Claude Code self-spawns and background services
• •UI improvements: Added mouse-click support for multi-select menus and 'Other' input rows in fullscreen mode; improved input responsiveness during agent task updates
• •Session reliability: Fixed background agent text loss on delivery failure, permanent daemon attach failures after updates, and HTTP/2 connection crashes
• •Memory optimization: Reduced session transcript size up to 79x, bounded file edit cache to 16 MB, capped LSP documents to 50-doc LRU, eliminated MCP stdio stderr accumulation (64 MB+)
• •Performance gains: Tool-call CPU overhead reduced up to 7x at high tool counts via tool-pool assembly caching; permission rule matchers now compiled and cached once
• •File operations fixes: Edit tool now handles post-read modifications, Read/Grep/Glob tools fixed for edge cases (empty files, invalid regex, null bytes)
• •Streaming robustness: Fixed truncated stream-json output, large markdown table rendering stalls (200+ rows now paginated), and Bedrock gateway transformation errors
• •Agent workflow improvements: Completed background agents persist in `/tasks` until cleanup, orphaned task notices collapse into summaries, subagent tool errors now clearly named

Workflow Diagram

Concepts

Artifacts (3)

# Option 1: Command line
claude --ax-screen-reader

# Option 2: Environment variable
export CLAUDE_AX_SCREEN_READER=1

# Option 3: Settings file
{
  "axScreenReader": true
}

{
  "vimInsertModeRemaps": {
    "jj": "<Esc>",
    "kk": "<Esc>"
  }
}

# Set the wrapper executable path
export CLAUDE_CODE_PROCESS_WRAPPER=/path/to/corporate/launcher

# All Claude Code self-spawns will now run through this wrapper
# Example wrapper: /usr/local/bin/corporate-launcher