polymarket-toolkit

Precise PnL calculator for any Polymarket address — reconstructs profit/loss from Data API cashflow (BUY/SELL/REDEEM/MERGE/SPLIT/REBATE) plus unrealized position value. Matches official /profit within ~0.2% MAPE on leaderboard validation. Bring-your-own Python (httpx).

Brier Score calculator for Polymarket addresses — measures prediction accuracy independent of PnL. Separates skilled predictors from market makers and arbitrageurs.

Polymarket address profiler — input any 0x address, get a complete trading profile with PnL, win rate, positions, category breakdown, and top trades. All data from public APIs, no local database needed.