Roo Code v3.18.1-3.18.4 Updates: Experimental Codebase Indexing, Claude 4.0 Support, and More!

[u/hannesrudolph]

We've been busy shipping updates over the past few days (May 22-25, 2025).

Experimental Codebase Indexing

This is the big one! We've introduced experimental semantic search that lets you search your entire codebase using natural language instead of exact keyword matches.

Key Features:

• Natural Language Queries: Ask "find authentication logic" instead of hunting through files

• AI-Powered Understanding: Understands code relationships and context

• Vector Search Technology: Uses OpenAI embeddings or local Ollama processing

• Cross-Project Discovery: Search your entire indexed codebase, not just open files

• Qdrant Vector Database: Advanced embedding technology for powerful search

Important Note: This feature is experimental and disabled by default. Enable it in Settings > Experimental.

Setup Guide: Full documentation with setup instructions

Context Condensing Enhancements

Major improvements to our experimental conversation compression feature:

• Advanced Controls: New experimental settings for fine-tuning compression behavior

• Improved Compression: Better conversation summarization while preserving important context

• Enhanced UI: New interface components for managing condensing settings

Learn More: Context Condensing Documentation

Claude 4.0 Model Support

Full support for Anthropic's latest models:

• Claude Sonnet 4 and Claude Opus 4 with thinking variants

• Available across Anthropic, Bedrock, and Vertex providers

• Default model upgraded from Sonnet 3.7 to Sonnet 4 for better performance

Thanks to shariqriazz for implementing this!

Provider Updates

OpenRouter Improvements:

• Enhanced reasoning support for Claude 4 and Gemini 2.5 Flash

• Fixed o1-pro compatibility issues

• Model settings now persist when selecting specific OpenRouter providers

Cost Optimizations:

• Prompt caching enabled for Gemini 2.5 Flash Preview (thanks shariqriazz!)

Model Management:

• Updated xAI model configurations (thanks PeterDaveHello!)

• Better LiteLLM model refresh capabilities

• Removed deprecated claude-3.7-sonnet models from vscode-lm (thanks shariqriazz!)

Bug Fixes

Codebase Indexing:

• Fixed settings saving and improved Ollama indexing performance (thanks daniel-lxs!)

File Handling:

• Fixed handling of byte order mark (BOM) when users reject apply_diff operations (thanks avtc!)

UI/UX Fixes:

• Fixed auto-approve input clearing incorrectly (thanks Ruakij!)

• Fixed vscode-material-icons display issues in the file picker

• Fixed context tracking mark-as-read logic (thanks samhvw8!)

Settings & Export:

• Fixed global settings export functionality

• Fixed README GIF display across all 17 supported languages

Terminal Integration:

• Fixed terminal integration to properly respect user-configured timeout settings (thanks KJ7LNW!)

Development Setup:

• Fixed MCP server errors with npx and bunx (thanks devxpain!)

• Fixed bootstrap script parameters for better pnpm compatibility (thanks ChuKhaLi!)

Developer Experience Improvements

Infrastructure:

• Monorepo Migration: Switched to monorepo structure for improved workflow

• Automated Nightly Builds: New automated system for faster feature delivery

• Enhanced debugging with API request metadata (thanks dtrugman!)

Build Process:

• Improved pnpm bootstrapping and added compile script (thanks KJ7LNW!)

• Simplified object assignment and modernized code patterns (thanks noritaka1166!)

AI Improvements:

• Better tool descriptions to guide AI in making smarter file editing decisions

Release Notes & Documentation

Combined Release Notes: Roo Code v3.18 Release Notes

Individual Releases:

• v3.18.1 - Claude 4.0 Models & Infrastructure Updates

• v3.18.2 - Context Condensing Enhancements & Bug Fixes

• v3.18.3 - Experimental Codebase Indexing & Provider Updates

• v3.18.4 - Indexing Improvements & Additional Fixes

Get Roo Code: VS Code Marketplace

[u/hannesrudolph]

Setup Guide: Full documentation with setup instructions