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Roo Code 3.21.4 Release Notes (2025-06-23)

This release introduces the new Claude Code provider for local CLI integration and fixes several critical issues.

Use Your Claude Max Subscription with Roo Code

You can now use your Claude Max subscription directly in Roo Code through our new Claude Code provider (thanks Cline!) (#4864, #5038):

  • Leverage Your Existing Subscription: Connect your Claude Max plan to Roo Code through the Claude CLI
  • No Additional API Costs: Use your subscription benefits instead of paying per-token API rates
  • Access Premium Models: Use Claude Sonnet 4, Opus 4, and other advanced models included in your plan
  • Zero Setup Complexity: Select Claude Code as your provider during initial setup - no API keys needed
  • Advanced Reasoning Support: Full access to Claude's thinking modes and reasoning capabilities

Perfect for Claude Max subscribers who want to maximize their subscription value while coding.

Bug Fixes

  • Apply Diff Accuracy: Fixed start line parameter not working correctly when applying multiple file diffs (thanks samhvw8!) (#5019)
  • Ollama Compatibility: Resolved validation errors that prevented Ollama from working with certain models (thanks daniel-lxs, MartinHarding1998!) (#5014)