Sovereign Attention Firewall: A Zero-Trust AI Perimeter for Your Calendar

This is a submission for the Notion MCP Challenge What I Built The Sovereign Attention Firewall — a zero-trust AI perimeter that defends your calendar and inbox from Calendar Snipers (unverified external invites) and Ghost Projects (meetings tied to archived work), before they ever interrupt deep work. Why this exists: Procurement professionals, operations leads, and anyone with a visible business title knows the pain. ZoomInfo scraped your LinkedIn. Now your calendar is bleeding ghost meetings, your inbox drowns in "just circling back" sequences, and every cold SDR thinks they own 30 minutes of your Tuesday. The Reddit procurement community has a name for it: attention theft. The only current defenses are manual — reply templates, block lists, and sheer emotional labour. The real cost isn't the emails. It's the cognitive fragmentation. Every unvetted vendor ping is a context switch tax on your focused work. What it does: The Sovereign Attention Firewall creates a human-in-the-loop AI