Adds granular per-mode control over which MCP servers and tools are available, replacing the previous all-or-nothing 'mcp' group behavior.
Schema (packages/types/src/mode.ts): - Add mcpServerFilterSchema with disabled/allowedTools/disabledTools - Add mcpDefaultPolicy ('allow'|'deny') for deny-by-default support - Add mcpGroupOptionsSchema extending group options for MCP tuples - Add superRefine validation rejecting MCP options on non-mcp groups
Core filtering (src/utils/mcp-filter.ts): - getMcpFilterForMode() resolves MCP config for a mode - isMcpServerAllowedForMode() checks server access with policy - isMcpToolAllowedForMode() checks tool access with allowlist/blocklist - Inlined getGroupName to avoid vscode import chain (ISSUE-16)
Prerequisite fix (src/utils/mcp-name.ts): - Fix normalizeForComparison regex: /[-\s]+/g -> /[-\s]/g (ISSUE-10) - Add toLowerCase() for case-insensitive matching
Prompt-level filtering: - filter-tools-for-mode.ts: Filter MCP tools from system prompt - build-tools.ts: Filter MCP tools for Gemini native function calling - ISSUE-19: Document native tools remain unfiltered for Gemini
Execution-time guards: - validateToolUse.ts: Replace blanket MCP allow with filter checks - Server-level guard for use_mcp_tool/access_mcp_resource - Tool-level guard for dynamic mcp--server--tool names - ISSUE-21: Tool-level check for use_mcp_tool when tool_name available - presentAssistantMessage.ts mcp_tool_use: Add filter using cline.taskMode - ISSUE-17: validateToolUse call uses cline.taskMode (frozen at task start) instead of state.mode (live UI mode) - ISSUE-20: Remove dead ?? defaultModeSlug fallback
Defense-in-depth: - UseMcpToolTool.execute(): Server + tool level filter before execution - AccessMcpResourceTool.execute(): Server level filter before execution - FLAG-E: Document 10-second TTL cache in CustomModesManager
UI fix (webview-ui): - ModesView.tsx: Cache group tuple options on toggle-off, restore on toggle-on to prevent MCP config data loss (ISSUE-9/ISSUE-13) - Extract pure caching functions to groupOptionsCache.ts
Tests: 89 new tests across 11 files, all passing
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| scripts | ||
| src | ||
| webview-ui | ||
| .dockerignore | ||
| .env.sample | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitconfig | ||
| .gitignore | ||
| .nvmrc | ||
| .prettierrc.json | ||
| .rooignore | ||
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| AGENTS.md | ||
| CHANGELOG.md | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| ellipsis.yaml | ||
| knip.json | ||
| LICENSE | ||
| package.json | ||
| pnpm-lock.yaml | ||
| pnpm-workspace.yaml | ||
| PRIVACY.md | ||
| progress.txt | ||
| README.md | ||
| renovate.json | ||
| SECURITY.md | ||
| tsconfig.json | ||
| turbo.json | ||
Get help fast → Join Discord • Prefer async? → Join r/RooCode
Roo Code
Your AI-Powered Dev Team, Right in Your Editor
What's New in v3.51.0
- Add support for OpenAI GPT-5.4 and GPT-5.3 Chat Latest so you can use the newest OpenAI chat models in Roo Code.
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Learn more: Using Modes • Custom Modes
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There are several ways to run the Roo Code extension:
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For active development, use VSCode's built-in debugging:
Press F5 (or go to Run → Start Debugging) in VSCode. This will open a new VSCode window with the Roo Code extension running.
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To build and install the extension as a VSIX package directly into VSCode:
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Please note that Roo Code, Inc does not make any representations or warranties regarding any code, models, or other tools provided or made available in connection with Roo Code, any associated third-party tools, or any resulting outputs. You assume all risks associated with the use of any such tools or outputs; such tools are provided on an "AS IS" and "AS AVAILABLE" basis. Such risks may include, without limitation, intellectual property infringement, cyber vulnerabilities or attacks, bias, inaccuracies, errors, defects, viruses, downtime, property loss or damage, and/or personal injury. You are solely responsible for your use of any such tools or outputs (including, without limitation, the legality, appropriateness, and results thereof).
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Apache 2.0 © 2025 Roo Code, Inc.
Enjoy Roo Code! Whether you keep it on a short leash or let it roam autonomously, we can’t wait to see what you build. If you have questions or feature ideas, drop by our Reddit community or Discord. Happy coding!





