Kramma
04

Performance audit

Am I good, and am I safe, answered for any Polymarket wallet from public data. No account, no API key, nothing to install.

Scoring a forecast requires knowing what someone believed before the outcome, which is why every other tool asks traders to log a probability against each position and then wait dozens of trades to learn anything. That step is unnecessary here. Every fill on Polymarket settles on Polygon with a price and a timestamp attached, so the record already exists: the price paid is the probability revealed.

Brier score
0.0004
across 24 resolved positions · lower is better
Skill vs own base rate
+100%
beating a trader who only knew how often they win
Calibration error
0.7pp
average gap between price paid and what happened
Win rate
79%
19 of 24 paid out

Am I good

Each row is a band of entry prices. Paid is the average price actually paid, which is the probability the wallet revealed by buying. Happened is how often those positions paid out. A well-calibrated trader has the two columns tracking each other.

Entry bandPositionsPaidHappenedGap
0–10%50%0%−0pp
90–100%1999%100%+1pp

A positive gap means the wallet was under-confident in that band, it won more often than the price it paid implied. Negative means over-confident.

Am I safe

Open exposure
$81
2 open positions
Largest position
100%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
−$1
against $81 of open value

100% of open capital sits in a single contract. A binary settles to one dollar or to nothing, so concentration here is not a question of style: a single adverse resolution takes that share of the book with it.

The resolved record

Every settled position, rebuilt from on-chain fills. Realised $6 across 24 positions, with $0 of entry fees paid.

MarketPaidResultSizeP&L
Will Algeria win the 2026 FIFA World Cup? — Yes0.0020lost416−$1
Will Portugal win the 2026 FIFA World Cup? — No0.9050won96$9
Will Haiti win the 2026 FIFA World Cup? — No0.9990won85$0
Exact Score: England 3 - 3 Argentina? — Yes0.0100lost339−$3
US obtains Iranian enriched uranium by June 30? — Yes0.0020lost440−$1
Will the Brooklyn Nets win the 2026 NBA Finals? — No0.9990won87$0
Will the New Orleans Pelicans win the 2026 NBA Finals? — No0.9990won87$0
Strait of Hormuz traffic returns to normal by end of June? — No0.9950won81$0
Will Union Saint-Gilloise win the 2025–26 Champions League? — No0.9990won176$0
Will Sporting win the 2025–26 Champions League? — No0.9960won86$0
Will Marseille win the 2025–26 Champions League? — No0.9940won87$1
Will Monaco win the 2025–26 Champions League? — No0.9950won91$0
Will Paris Saint-Germain FC vs. Arsenal FC end in a draw? — No0.0020lost417−$1
Will Sevilla win the 2025–26 La Liga? — No0.9970won87$0
Will Leeds win the 2025–26 English Premier League? — Yes0.0020lost409−$1
Will Leeds win the 2025–26 English Premier League? — No0.9980won91$0
Will Crystal Palace win the 2025–26 English Premier League? — No0.9980won91$0
Will the Tennessee Titans win Super Bowl 2026? — No0.9970won90$0
Will Melania say "Career" during AI talk on Friday? — No0.9990won89$0
Will A Minecraft Movie be the top grossing movie of 2025? — Yes0.9990won87$0
Will Avatar 3 be the top grossing movie of 2025? — No0.9990won87$0
Will The Fantastic Four: First Steps be the top grossing movie of 2025? — No0.9980won89$0
Will Thunderbolts be the top grossing movie of 2025? — No0.9970won90$0
Will Elon Musk post 240-259 tweets from November 14 to November 21, 2025? — No0.9990won87$0

Swipe the table sideways to see every column.

Polymarket only. Kalshi is a regulated exchange with a private database, its per-account endpoints require the account holder's own credentials, so there is no equivalent public record to read. Method →