broker-fuse

broker-fuse: Price Shield (Global Interceptor)

The hard-stop safety mechanism that gives users confidence to delegate pricing authority to the AI.

This is a GLOBAL INTERCEPTOR, NOT a sequential step. Every publish action (broker-card) and every auto-repricing action (broker-schedule) MUST validate against the floor. It is the gate that all price-mutating operations pass through.

Core Principle

The user delegates daily price adjustments to the AI, but retains ultimate control via an unbreachable floor. The AI operates within a safe zone; the fuse is absolute.

Every price change — whether initial publish or later auto-repricing — flows through the shield check. If suggested_price < floor_price, the action is BLOCKED and logged to the audit trail. This is the technical implementation of the pricing safety boundary.

Workflow

1. Present risk profiles for reference:

Profile	Floor	Effect
Fast Sale	55% of recommended	Faster liquidity, less profit
Balanced (recommended)	70% of recommended	Trade speed and profit
Profit Protection	85% of recommended	Wait for right buyer

2. User sets exact floor price (or accepts a profile suggestion)
3. Validate: floor must be < current listing price
4. Write fuse to listing state
5. Explain what happens:
   • Above floor: AI auto-adjusts without asking
   • Below floor: Repricing pauses, user is notified
   • Scheduler will never cross the floor

Script

python3 scripts/fuse.py --item-id <id> --set 200        # Set floor at ¥200
python3 scripts/fuse.py --item-id <id> --auto balanced   # Auto-calculate
python3 scripts/fuse.py --item-id <id> --check 150       # Check if ¥150 breaches