newbpydev/mcp-diagnostics-extension

npm install && npm run compile (from source)
Install 'MCP Diagnostics Extension' from the VS Code Marketplace

Usage

• •After install the extension auto-activates, registers as an MCP server and shows `$(bug) MCP: XE YW` in the status bar.
• •AI agents query three tools: getProblems, getProblemsForFile and getWorkspaceSummary, plus diagnostics:// resources and problemsChanged notifications.
• •One-click setup: Command Palette → 'MCP Diagnostics: Configure Server' deploys the bundled server to ~/.mcp-diagnostics and injects config (workspace .cursor/mcp.json → user home).
• •For a standalone server add an mcpServers block pointing at node scripts/mcp-server.js with NODE_ENV=production.

Key features

• ✓Real-time diagnostics capture with 300ms (configurable) debounce and structured MCP notifications.
• ✓One-click cross-environment auto-registration (VS Code, Cursor, Windsurf, Claude Desktop) with atomic writes, backups and rollback.
• ✓Cached multi-source fallbacks: VS Code export primary, then direct TypeScript compiler and ESLint analysis.
• ✓Configurable port, debounce, logging and max-problems; status webview with per-severity/source breakdown.
• ✓Cross-platform spawn handling for Windows/macOS/Linux.

Best for

Developers using AI assistants in VS Code/Cursor who want agents to see the current Problems panel state in real time.

Caveats

• ⚠Requires VS Code 1.96.0+, Node.js 22.x and TypeScript 5.8.3+.
• ⚠Real-time data comes from the live VS Code Problems panel; standalone mode relies on cached/fallback sources.
• ⚠MIT licensed.