Claude Code 2.1.70: Proxy Gateway & Voice Fixes

TL;DR

• Fixed API 400 errors when using third-party gateways with ANTHROPIC_BASE_URL
• Fixed voice mode failures on Windows and push-to-talk activation issues
• Reduced Remote Control polling by 300× and startup memory by ~426KB
• Added native MCP server management dialog and VS Code session sidebar

New

• VS Code session sidebar — Spark icon in activity bar lists all Claude Code sessions, opening as full editors for easier navigation
• Markdown plan view — Full document view for plans in VS Code with comment support for feedback
• Native MCP server management — Use /mcp in chat to enable/disable servers, reconnect, and manage OAuth without the terminal

Fixed

• Proxy gateway API errors — Tool search now correctly detects proxy endpoints and disables tool_reference blocks when using ANTHROPIC_BASE_URL
• Custom Bedrock model errors — Fixed "This model does not support the effort parameter" when using custom Bedrock profiles or non-standard Claude naming
• Empty model responses after ToolSearch — Server now renders tool schemas correctly to prevent models from stopping early
• Prompt cache bust on MCP reconnect — Fixed cache invalidation when an MCP server with instructions connects after the first turn
• Enter key on slow SSH — Fixed Enter inserting newline instead of submitting during high-latency connections
• Windows clipboard corruption — Non-ASCII text (CJK, emoji) now preserved using PowerShell Set-Clipboard
• Extra VS Code windows on startup — Fixed duplicate windows opening on Windows when running from integrated terminal
• Windows voice mode failures — Fixed "native audio module could not be loaded" error on Windows native binary
• Push-to-talk activation — Fixed voice mode not activating on session start when voiceEnabled: true was set
• Markdown link anchors — Fixed #NNN references incorrectly pointing to current repository instead of linked URL
• Opus model notifications — Fixed repeated "Model updated to Opus 4.6" alerts when legacy model strings are pinned in .claude/settings.json
• Plugin installation status — Fixed inaccurate installation indicators in /plugin and "not found" errors on fresh startup
• Security review on older git — Fixed /security-review failing with unknown option merge-base on legacy git versions
• Color reset command — /color default, /color gray, /color reset, and /color none now restore default color
• AskUserQuestion performance — Fixed markdown re-rendering on every keystroke in notes input
• Feature flag staleness — Fixed flags read at startup never refreshing disk cache across sessions
• Remote permissions override — Fixed non-standard permissions.defaultMode values being applied in Remote environments
• Skill listing bloat — Fixed re-injection on every --resume (~600 tokens saved per resume)
• Teleport marker rendering — Fixed marker not displaying in VS Code teleported sessions

Improved

• Microphone silence detection — Better error messaging to distinguish silence from "no speech detected"
• Compaction with images — Preserves images in summarizer request for prompt cache reuse, enabling faster and cheaper compaction
• Rename command responsiveness — /rename now works while Claude is processing instead of being silently queued
• Prompt re-renders — Reduced by ~74% during turns
• Startup memory — Reduced by ~426KB for users without custom CA certificates
• Remote Control polling — Reduced /poll rate to once per 10 minutes while connected (was 1–2s), cutting server load ~300×

Update Claude Code via VS Code extensions or download the latest version from code.claude.com.

Source: Claude Code