Roo Code 3.19.2 Release Notes (2025-06-01)

This release includes improvements to MCP server connectivity, provider enhancements, UI optimizations, and several bug fixes and security updates.

QOL Improvements

Streamable HTTP Transport for MCP Servers: Added support for MCP servers using streamable HTTP-based transport (thanks taylorwilsdon!) (#3260)
MCP Server Instructions Support: Added support for server instructions in MCP configuration (thanks qingyuan1109!) (#4210)
Optimized Chat Layout and Styles: Fine-tuned the layout and styling of chat messages for improved readability (thanks zhangtony239!) (#4205)

Enhanced LiteLLM Provider: Added cached read and write tokens to stats and cost calculation (thanks mollux!) (#4206)

Prevent Full File Dump on User Edit: Resolved an issue where editing a file before saving a proposed modification could dump the entire file content into the context. This fix prevents context bloat, maintains model focus, and reduces costs (#4219, #3654) (thanks KJ7LNW!).
Correct OpenAI-Compatible API Key Label: The label for OpenAI-compatible API keys in settings now correctly reads "API Key" instead of "OpenAI API Key" for better clarity (#4191).
Prevent Invalid Markers in apply_diff REPLACE: Added validation to ensure :start_line: and :end_line: markers are not incorrectly included in the REPLACE section of apply_diff operations, improving robustness (#4015) (thanks KJ7LNW!).
Fix Virtuoso Footer Re-rendering: Addressed an issue where the Virtuoso component's footer would continuously re-render, improving UI performance (#4209) (thanks kiwina!).
Release Memory in apply_diff: Optimized memory usage in the apply_diff tool by explicitly releasing the original content buffer after use, helping to prevent potential memory leaks (#4193) (thanks xyOz-dev!).
Fix Directory Link Handling in Markdown: Enhanced how directory links in markdown (e.g., [some/directory/](some/directory/)) are handled, ensuring they correctly open in the Explorer view (#3690) (thanks KJ7LNW!).
Typo Fixes: Corrected various typos in comments and tool use prompts (#4220, #4095) (thanks mrubens, noritaka1166!).

Unified History Item UI: Refactored history item UI components for code consistency (thanks daniel-lxs!) (#4151)
Node.js Upgrade: Upgraded Node.js to v20.19.2 to incorporate the latest security enhancements and ensure a more secure environment (thanks PeterDaveHello!) (#4212)