GitHub Copilot Visual Studio March Update: Custom .agent.md Agents, find_symbol Tool, and PerfTips Profiler Integration

GitHub Changelog·medium signal

Posted April 2 to GitHub Changelog. Developers can now define custom Copilot agents as .agent.md files in their repository, with full access to workspace awareness, code understanding, tools, and MCP connections. A new find_symbol tool gives agents language-aware symbol navigation for C++, C#, Razor, TypeScript, and any language with an LSP extension. PerfTips now integrate with the Profiler Agent — click inline performance signals while debugging and Copilot analyzes CPU usage, elapsed time, and memory with optimization suggestions. Enterprise MCP governance adds allowlist policies for organization-approved MCP servers.