OVERRIDE

AIは審理する。人間が判断する。

OVERRIDE is a human-in-the-loop decision system where 8 AI agents with different biases deliberate on the same case, reach a consensus, and a human holds the final OVERRIDE (veto) power. Every deliberation, vote, and human override is recorded in a tamper-evident SHA-256 hash-chain audit ledger — the same design as a blockchain.

Built for the AWS "Agents for Humans" Hackathon with the Strands Agents SDK philosophy: agents work in the background, surface only when a real decision is needed, and the human stays in control.

The Core Idea

"AI answers. But only humans decide."

Most AI systems say "AI is a tool." That's a lie — tools don't answer, they don't influence. AI has authority. OVERRIDE asks: who supervises that authority? The answer: humans are the judges of AI, not the other way around.

Why It Wins (Judging Criteria)

Criterion	OVERRIDE
Technical	8-agent adversarial jury + SHA-256 hash-chain ledger + tamper detection. Real, non-trivial implementation.
Design	The "Override" philosophy threads through tech, UI, and story.
Impact	Solves Good Neighbor problems (disaster relief, volunteer allocation) while redefining accountable AI.
Creativity	Inverts the "AI works for humans" trope — AI deliberates, humans decide.
Presentation	Theater: AI argues → human clicks Override → tamper-proof record.

Features

• 8-Agent Adversarial Jury (lib/jury.js) — Careful, Optimist, Legal, Human, Technical, Liquidity, Community, Contrarian. Each votes ENTER / CAREFUL / AVOID. Majority = consensus.
• Tamper-Evident Audit Ledger (lib/ledger.js) — SHA-256 hash-chain. Edit one row → the whole chain breaks → TAMPERED.
• Launch Radar (lib/radar.js) — Deployer history rings (green/red) to avoid rug-pullers.
• Black Box (lib/blackbox.js) — Session recording + 20x replay.
• Override UI (web/index.html) — Human clicks Approve / Reject / Override. Every decision is sealed in the ledger.

Architecture

┌─────────────────────────────────────────────────────────┐
│                      OVERRIDE UI                        │
│              (web/index.html · browser)                 │
│  ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐  │
│  │ 8-Agent  │ │ Consensus │ │ Override │ │  Ledger  │  │
│  │  Jury    │ │  Display  │ │  Button  │ │  View    │  │
│  └────┬─────┘ └────┬─────┘ └────┬─────┘ └────┬─────┘  │
└───────┼────────────┼────────────┼────────────┼────────┘
        │            │            │            │
┌───────▼────────────▼────────────▼────────────▼────────┐
│                    Core Engine (lib/)                  │
│  ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐  │
│  │ jury.js  │ │ledger.js │ │ radar.js │ │blackbox.js│ │
│  │ 8-bias   │ │ SHA-256  │ │deployer  │ │ session  │  │
│  │ voting   │ │ hash-chain│ │ history  │ │ replay   │  │
│  └──────────┘ └──────────┘ └──────────┘ └──────────┘  │
└────────────────────────────────────────────────────────┘

Quick Start

# Run tests (Node.js)
node test/ledger.test.js
node test/jury.test.js
node test/radar.test.js
node test/blackbox.test.js

# Open the demo UI
# Serve web/ over HTTP (file:// may block module loading)
python -m http.server 8080 --directory web
# → http://localhost:8080

The Demo Moment

1. 8 AI agents argue over a disaster-relief allocation.
2. They split — no consensus on their own.
3. You click Override.
4. The SHA-256 ledger seals your decision. Tamper with it → TAMPERED.

License

MIT