An open-source, self-hostable visual pipeline builder: Blender / ComfyUI style, but MCP-native. Drag MCP-wrapped tool nodes onto a canvas, wire inputs to outputs, configure each with your own API keys, and run. It never holds a shared key and never bills on your behalf. An integrator, not a wrapper. Core differentiator: a BFS wire-compatibility engine that auto-inserts visible, cost-estimated converter nodes when two sockets don’t share a schema.