v2.1.70

2026-03-08 · Source: Claude Code Changelog · Field: Technology & Digital — Artificial Intelligence & Machine Learning, Software Development & Engineering, Cloud Computing & IT Infrastructure · Depth: Advanced, quick

Summary

A recent update addresses numerous bugs and introduces several improvements across the Claude Code platform, particularly for VS Code integration. Key fixes include resolving API 400 errors with `ANTHROPIC_BASE_URL` and custom Bedrock profiles, preventing empty model responses after `ToolSearch`, and correcting issues with non-ASCII clipboard text on Windows. Performance regressions in the `AskUserQuestion` dialog were fixed, and prompt-cache busting with MCP server connections was resolved. Improvements focus on clearer microphone error messages, better compaction to preserve images for prompt cache reuse, and allowing `/rename` during Claude processing. The update also significantly reduces prompt input re-renders by ~74%, startup memory by ~426KB, and Remote Control `/poll` rate by ~300x. New VS Code features include a spark icon for session listing, full markdown document view for plans, and native MCP server management.

Key takeaway

For Machine Learning Engineers and developers using Claude Code, this update streamlines your workflow by fixing critical API and UI issues. You should update to leverage improved performance, more stable tool interactions, and enhanced VS Code features like native MCP server management and full markdown plan views. This release directly addresses common pain points, making your daily development tasks smoother and more efficient.

Key insights

This update significantly enhances Claude Code's stability, performance, and VS Code integration through targeted bug fixes and feature additions.

Principles

• Prioritize robust API integration
• Optimize for user experience
• Reduce resource consumption

In practice

• Use `/mcp` for server management
• Expect faster prompt rendering
• Benefit from improved compaction

Topics

• API Error Handling
• Performance Optimization
• VS Code Integration
• Claude Model Interaction
• Development Tooling

Best for: Machine Learning Engineer, AI Engineer, Software Engineer, MLOps Engineer

Related on AIssential

• v2.1.71 — This update significantly enhances Claude Code's automation, stability, and user experience through new features and critical bug fixes.
• v2.1.86 — Recent Claude Code updates enhance performance, fix bugs, and introduce new features for improved developer workflows.

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Editorial summary, takeaway, and curation by AIssential. Original article published by Claude Code Changelog.