Claude Code v2.1.70: Major Bug Fixes and Performance Improvements

Claude Code v2.1.70 is now available with a comprehensive set of bug fixes and performance enhancements that address many pain points reported by the community. This release focuses on stability, compatibility, and user experience improvements across all platforms.

What’s New

API and Gateway Compatibility

Fixed third-party gateway support: Resolved API 400 errors when using ANTHROPIC_BASE_URL with third-party gateways by improving proxy endpoint detection
Custom Bedrock profiles: Fixed “effort parameter not supported” errors when using custom Bedrock inference profiles or non-standard model identifiers
Tool search improvements: Eliminated empty model responses after ToolSearch operations by fixing system-prompt rendering issues

Windows and Cross-Platform Fixes

Clipboard enhancement: Fixed corruption of non-ASCII text (CJK characters, emoji) on Windows/WSL by implementing PowerShell Set-Clipboard
VS Code integration: Prevented extra VS Code windows from opening at startup when running from the integrated terminal
Voice mode support: Resolved native audio module loading issues that caused voice mode failures on Windows
SSH connectivity: Fixed Enter key behavior over slow SSH connections

User Interface and Experience

Voice activation: Fixed push-to-talk not activating properly when voiceEnabled: true is set
Markdown links: Corrected #NNN reference handling in markdown links
Plugin management: Improved plugin installation status accuracy and marketplace error handling
Color commands: Added reset options (/color default, /color reset, etc.) to restore default colors

Performance Optimizations

Reduced re-renders: Cut prompt input re-renders by ~74% during active turns
Memory efficiency: Reduced startup memory usage by ~426KB for standard configurations
Faster compaction: Improved image preservation in summarizer requests for better prompt cache reuse
Token savings: Eliminated redundant skill listing injection, saving ~600 tokens per resume

Developer and Advanced Features

Git compatibility: Fixed /security-review command compatibility with older git versions
Remote control: Optimized polling rate to once per 10 minutes for Remote Control
Feature flags: Resolved stale cache issues that persisted across sessions
Permission handling: Improved settings validation for Remote environments

How to Update

To update to Claude Code v2.1.70:

Automatic updates: Most users will receive the update automatically
Manual installation: Download from the official release page
Package managers: Update through your preferred package manager if installed via Homebrew, apt, or similar
Verify installation: Run claude --version to confirm you’re on v2.1.70