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
0.1187
across 142 resolved positions · lower is better
Skill vs own base rate
+25%
beating a trader who only knew how often they win
Calibration error
3.7pp
average gap between price paid and what happened
Win rate
20%
28 of 142 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%534%4%−0pp
10–25%3517%9%−9pp
25–40%3030%30%−0pp
40–60%1750%53%+3pp
60–75%563%80%+17pp
75–90%277%50%−27pp

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
$206
20 open positions
Largest position
22%
share of open capital in one contract
Half the book
4
positions hold half the exposure
Unrealised
−$54
against $206 of open value

The resolved record

Every settled position, rebuilt from on-chain fills. Realised $824 across 142 positions, with $14 of entry fees paid.

MarketPaidResultSizeP&L
Will "Spider-Man: Brand New Day" Opening Weekend Box Office be between 260m and 280m? — Yes0.0816lost428−$35
Will "Spider-Man: Brand New Day" Opening Weekend Box Office be between 240m and 260m? — Yes0.0394lost558−$22
Will "Spider-Man: Brand New Day" Opening Weekend Box Office be less than 200m? — Yes0.0420lost214−$9
Will "Spider-Man: Brand New Day" Opening Weekend Box Office be between 220m and 240m? — Yes0.1700lost59−$10
Will "Spider-Man: Brand New Day" Opening Weekend Box Office be between 200m and 220m? — Yes0.0852lost129−$11
Will Lionel Messi be the top goalscorer at the 2026 FIFA World Cup? — Yes0.1117lost296−$33
Will Jude Bellingham be the top goalscorer at the 2026 FIFA World Cup? — Yes0.0427lost158−$7
Will Mikel Oyarzabal be the top goalscorer at the 2026 FIFA World Cup? — Yes0.0070lost1,414−$10
Will Argentina win the 2026 FIFA World Cup? — Yes0.1566lost1,625−$254
Will Spain win the 2026 FIFA World Cup? — Yes0.2082won1,327$1.1K
Will England win the 2026 FIFA World Cup? — Yes0.2100lost1,269−$266
Will France win the 2026 FIFA World Cup? — Yes0.3670lost953−$350
Will Ousmane Dembele be the top goalscorer at the 2026 FIFA World Cup? — Yes0.0072lost1,283−$9
Will Harry Kane be the top goalscorer at the 2026 FIFA World Cup? — Yes0.0700lost57−$4
Will Vinicius Junior be the top goalscorer at the 2026 FIFA World Cup? — Yes0.0190lost105−$2
Will Erling Haaland be the top goalscorer at the 2026 FIFA World Cup? — Yes0.0340lost59−$2
Will Kylian Mbappe be the top goalscorer at the 2026 FIFA World Cup? — Yes0.4000won33$20
Will Paraguay win the 2026 FIFA World Cup? — Yes0.0030lost4,667−$14
Will Croatia win the 2026 FIFA World Cup? — Yes0.0040lost2,750−$11
Will USA win the 2026 FIFA World Cup? — Yes0.0280lost786−$22
Will Morocco win the 2026 FIFA World Cup? — Yes0.0410lost780−$32
Will Mexico win the 2026 FIFA World Cup? — Yes0.0130lost769−$10
Will Brazil win the 2026 FIFA World Cup? — Yes0.0670lost731−$49
Will South Korea win the 2026 FIFA World Cup? — Yes0.0040lost7,750−$31
Will Uzbekistan win the 2026 FIFA World Cup? — Yes0.0010lost18,080−$18
Will Netherlands win the 2026 FIFA World Cup? — Yes0.0400lost730−$29
Will Belgium win the 2026 FIFA World Cup? — Yes0.0200lost1,250−$25
Will Germany win the 2026 FIFA World Cup? — Yes0.0560lost518−$29
Will Portugal win the 2026 FIFA World Cup? — Yes0.0960lost302−$29
Spain vs. Argentina: Team to Advance — Spain0.6250won160$60
Spain vs. Argentina: Team to Advance — Argentina0.3700lost268−$99
Will Argentina win on 2026-07-19? — Yes0.2700lost556−$150
Will England win on 2026-07-18? — Yes0.2700won185$135
Will France win on 2026-07-18? — Yes0.5000lost60−$30
Will England vs. Argentina end in a draw? — Yes0.2336lost240−$56
Will Argentina win on 2026-07-15? — Yes0.1945won422$340
Will England win on 2026-07-15? — Yes0.3800lost132−$50
Will France win on 2026-07-14? — Yes0.0122lost3,274−$40
Will France vs. Spain end in a draw? — Yes0.3000lost95−$29
Will Spain win on 2026-07-14? — Yes0.3000won130$91
Will Argentina win on 2026-07-11? — Yes0.5800lost173−$100
Will Switzerland win on 2026-07-11? — Yes0.1700lost59−$10
Will England win on 2026-07-11? — Yes0.4429lost101−$45
Will Norway vs. England end in a draw? — Yes0.2700won107$78
Will Norway win on 2026-07-11? — Yes0.2336lost151−$35
Will Spain vs. Belgium end in a draw? — Yes0.2500lost208−$52
Will Spain win on 2026-07-10? — Yes0.6100won164$64
Will Belgium win on 2026-07-10? — Yes0.1700lost156−$26
Will Morocco win on 2026-07-09? — Yes0.0606lost418−$25
Will France vs. Morocco end in a draw? — Yes0.2575lost113−$29
Will France win on 2026-07-09? — Yes0.6200won52$20
Will Switzerland vs. Colombia end in a draw? — Yes0.3200won103$70
Will Switzerland win on 2026-07-07? — Yes0.2700lost111−$30
Will Colombia win on 2026-07-07? — Yes0.4300lost60−$26
Will Argentina win on 2026-07-07? — Yes0.0400won463$444
Will Argentina vs. Egypt end in a draw? — Yes0.1489lost703−$105
Will Egypt win on 2026-07-07? — Yes0.0900lost75−$7
Will Belgium win on 2026-07-06? — Yes0.3700won17$11
Will United States win on 2026-07-06? — Yes0.3500lost14−$5
Will Portugal vs. Spain end in a draw? — Yes0.2700lost52−$14

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 →