see "phase 1.5" of our running mcp design [doc](https://docs.google.com/document/d/1oanK2ytkcoIe_bDX_cam9t8NhHZZ8YCzP5j_w7-Wcnk/edit?tab=t.0#heading=h.3nvmalsoc98a)
see "phase 1.5" of our running mcp design doc