Polyphon's MCP Server Makes Your AI Ensemble a Native Agent Tool

Polyphon just shipped MCP server support, and it changes the product's role in a developer workflow. Instead of opening Polyphon as a UI you visit deliberately, your coding agent — Claude Code, Cursor, Codex CLI, GitHub Copilot, Windsurf, Gemini CLI — can now call into it directly and broadcast a prompt across your entire Claude + GPT-4o + Gemini ensemble in one shot. Here's what shifted, why the SessionEventSink abstraction made it possible, and when multi-model review is actually worth it.