Mostly custom. Full data model and full web and mobile app to help run day to day operations.

The agent has switched a few times, initially NanoClaw, then Hermes, and now Vercel's Eve (maximum customizability).

NextJS/Shadcn web app, postgres db, eve agent layer, MCP tools (over 100 so every single thing can be done by an agent), SwiftUI mobile app, etc.

Integrations with gmail, gcal, gdrive, quickbooks, using mdx for the wiki displays (so we have rich diagrams, 3d models, etc).

We write about it here: https://kznconsulting.com/work/how-we-run-kaizen