Yield Alpha

Earnings use simple pro-rata math (no compounding in v1):

earnings = principal * (apyPct / 100) * (horizonDays / 365)

Alternative APYs come from live dashboard market data (`rate.currentPct`, falling back to `basePct`). Manual current APY is user-entered.

Switching costs are labeled estimates: exit fee, entry fee, gas by chain, time cost during transfer, and optional early-exit penalty. Override inputs when you know exact protocol terms. Estimates never silently present as measured fees.

grossAlpha = altEarnings - currentEarnings
netAlpha   = grossAlpha - switchingCostUsd

Alternatives are ranked by net Yield Alpha in USD. Sponsorship never changes this order.

• MOVE when net Alpha clears the larger of $25 or 15 bps of principal, and alternative durability is at least 40/100, without an unusually high outlier with weak history.
• STAY when net Alpha is negative beyond the larger of $10 or 5 bps of principal, or the alternative has no usable rate.
• WATCH for thin edges, weak durability, or insufficient history.

Durability is derived only from existing dashboard rate history fields: stability score, durability enum, history coverage, deviation from 7d/30d medians, decay state, outlier state, and stability label. Insufficient history caps the score at 35.

Wallet scan is read-only and never requests a signature. Phase 1 ships an adapter interface plus a polished stub that reports empty/unsupported results and routes you to the manual calculator. Detected positions are never fabricated.

yield-alpha@1.0.0

Yield Alpha is a research calculator, not financial advice. Yields are variable and never guaranteed. Switching costs are labeled estimates. Always verify protocol terms before moving funds.