Two Phionyx profiles, running live
See what Phionyx does — in your browser.
HearthOS is a small household assistant where the system proposes and the responsible adult decides. It is the place to learn by doing what two Phionyx runtime profiles actually mean — the Safety Gate and the Evidence profile — with nothing to sign up for and nothing leaving your browser.
Three deterministic modules — a 3-minute household check, a Weekly Reset with a parent-approval queue, and matched boundary scripts. Each step you take writes a signed record you can download and verify.
Open the live demo →A fictional family, synthetic data · the signed records are real · same input → same output
What you can watch happen
Safety Gate · the boundary
A sensitive decision can't run on autopilot.
The Safety Gate is a fail-closed check between the model's suggestion and any action. When input touches a sensitive area — money, health, school, anything that leaves the family — the gate flags it and routes it to the responsible adult instead of acting.
Watch it live: in the Boundary Script module, describe a moment that mentions money or a doctor. The gate fires, shows you why, and marks the proposal “needs explicit parent approval.” The model never gets the last word.
Evidence · the notary
Every step becomes a signed, replayable record.
The Evidence profile turns each decision into a signed, tamper-evident record — capturing the authority tier and the approval state. The record, not the model's word, is the account of what happened. (How the chain is structured and verified is defined once, in AIREP.)
Watch it live: every module shows a growing audit chain. Download it as a .jsonl file, change a single byte, and re-verify — the chain reports exactly which step was altered. (The same records are byte-compatible with the Python Phionyx verifier.)
What changes when you use Phionyx
Without it
The model's suggestion can become the system's action, with no record of what was checked, approved, or skipped.
With these profiles
The suggestion passes a gate, escalates when it's sensitive, and becomes a signed record. The AI proposes; the adult decides; the record holds.
What it is, and what it isn't
HearthOS is a reference implementation of one principle — AI proposes, the responsible adult decides — deliberately small and inspectable, and a fiction-companion to the HearthOS book. It is not a parenting tool and not a clinical instrument; it does not diagnose, treat, or replace a responsible adult's judgement. It is the same bounded-authority pattern Phionyx formalizes, at household scale, in TypeScript.
Starter Kit (PDF)
10 printable pages — a family-facing companion.
Download →HearthOS — Book 1
The world the principle lives in.
Read on Amazon →Source & profile map
The code, and how each gate maps to a profile.
View on GitHub →Starter Kit text: share freely with attribution. Code AGPL-3.0.