Costabile KB · Private Library

A quiet library
for building calm
and capable systems.

Personal guides on self-hosting, finance, AI, home lab experiments, and the systems that keep a house running smoothly. Written for reference, designed for focus.

01 — Collections

Seven curated shelves, growing all the time.

Each collection holds a set of focused guides. Start with one and wander as far as you need.

03 — Field notes

What's been on the bench this week.

Recent work from the home lab, recent deployments, and small experiments worth sharing.

Note 01

AI Personal Assistant Playbook: Use Hermes/Xena Deliberately

A practical guide to delegating work, choosing tools and models, using skills and schedules, protecting privacy, and verifying outcomes.

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Note 02

Chicken Coop Automation: Architecture, Safety & Recovery Runbook

A practical operating and recovery manual for the automated coop door: timing, sensors, Zigbee controls, weather, notifications, and manu...

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Note 03

ESPHome Practical Guide: Build Reliable Local Devices

A practical guide to ESPHome device design, YAML structure, OTA updates, diagnostics, security, and Home Assistant integration.

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