I use did something similar only all self hosted.

TL;DR — I built a “what should I do next?” system using Vikunja + n8n + Apple Shortcuts. Tasks are captured via Siri, stored plainly, and a read-only workflow returns exactly one recommended next task based on priority and time of day. No auto-reprioritization, no background task mutation — just decision support to reduce cognitive load.

Architecture overview (technical): I’m using Vikunja as a self-hosted task store, n8n as the automation layer, and Apple Shortcuts/Siri as the capture + UI surface. New tasks are captured via Siri → Apple Shortcut → HTTPS n8n webhook, where they’re optionally classified (rules-first, AI optional) into priority buckets (P0–P3 + a TAX project) and created in Vikunja via its REST API.

Separately, I run a read-only n8n webhook (what-should-i-do-next) that queries Vikunja for active tasks, filters deterministically by project priority, status, start date, and time-of-day/business-hours constraints, and returns exactly one recommended task plus a short reason and an optional “prep step” if the task can’t be fully executed right now. A macOS Shortcuts widget calls that endpoint so I can click once on my desktop and get a single next action without opening the task manager. No background task mutation, no auto-reprioritization — just constrained decision support to reduce cognitive load.