No Triple Nexus coordination mechanism exists at the Kenya level today. Mathare, further down, is currently the only level with real coordination data — this page says that plainly rather than filling the gap with placeholder content.
A national coordination mechanism would need a recognised convening body, agreed reporting lines between humanitarian, development and peacebuilding actors, and a way to track county-level work without duplicating it. None of that exists today.
The Nexus Bridge programme is building the Mathare model first, as a working example of what ward-level coordination can look like in practice, before approaching what a national mechanism might need.
If you know of Triple Nexus coordination efforts at the Kenya level we should be aware of, tell us here.