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
0.2216
across 95 resolved positions · lower is better
Skill vs own base rate
+6%
beating a trader who only knew how often they win
Calibration error
5.2pp
average gap between price paid and what happened
Win rate
62%
59 of 95 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
10–25%418%25%+7pp
25–40%135%0%−35pp
40–60%1854%56%+2pp
60–75%4967%63%−4pp
75–90%2181%71%−9pp
90–100%290%100%+10pp

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
$8
1 open position
Largest position
100%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
−$2
against $8 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 95 positions, with $1 of entry fees paid.

MarketPaidResultSizeP&L
Will England win the 2026 FIFA World Cup? — Yes0.1000lost10−$1
Spain vs. Argentina: 1st Half O/U 5.5 Total Corners — Under0.8000won1$0
France vs. Morocco: France O/U 5.5 Corners — Over0.5900lost2−$1
Mexico vs. England: Team to Advance — England0.5400won2$1
Brazil vs. Norway: Both Teams to Score — Yes0.6100won2$1
Bitcoin Up or Down - July 2, 6:35AM-6:40AM ET — Up0.9000won1$0
Bitcoin Up or Down - July 2, 6:25AM-6:30AM ET — Down0.8000lost1−$1
Spain vs. Austria: Spain O/U 1.5 — Over0.6800won1$0
Bitcoin Up or Down - July 1, 4:10AM-4:15AM ET — Down0.8400won1$0
Mexico vs. Ecuador: Team to Advance — Mexico0.6300won2$1
Spread: France (-1.5) — France0.5400won2$1
Côte d'Ivoire vs. Norway: Team to Advance — Norway0.6400won2$1
Spread: Germany (-1.5) — Germany0.4700lost2−$1
Will Brazil win on 2026-06-29? — Yes0.2200won5$4
Will Japan win on 2026-06-29? — Yes0.1900lost5−$1
Bitcoin Up or Down - June 27, 4:55PM-5:00PM ET — Up0.9000won1$0
Bitcoin Up or Down - June 27, 4:50PM-4:55PM ET — Up0.2300lost4−$1
Bitcoin Up or Down - June 27, 4:30PM-4:35PM ET — Down0.8400won1$0
Bitcoin Up or Down - June 27, 4:15PM-4:20PM ET — Up0.7600won1$0
Will BV Borussia 09 Dortmund win on 2026-05-03? — Yes0.5100lost3−$2
Will FC Barcelona win on 2026-05-02? — Yes0.5700won2$1
Will Olympique de Marseille win on 2026-05-01? — Yes0.5100lost3−$2
Bitcoin Up or Down - May 1, 8:55AM-9:00AM ET — Up0.6000lost2−$1
Will RCD Mallorca win on 2026-05-01? — No0.7500lost1−$1
Will Beşiktaş JK win on 2026-05-01? — Yes0.4700won2$1
Will Nottingham Forest FC win on 2026-04-30? — No0.6600lost2−$1
Will Crystal Palace FC win on 2026-04-30? — No0.5300lost2−$1
Bitcoin Up or Down - April 29, 10:45AM-10:50AM ET — Down0.7000won1$0
Will Club Atlético de Madrid win on 2026-04-29? — No0.6800won1$0
Will Paris Saint-Germain FC win on 2026-04-28? — No0.6100lost2−$1
Will Konyaspor win on 2026-04-27? — No0.7100lost1−$1
Will Beşiktaş JK win on 2026-04-27? — Yes0.7400lost1−$1
Will Brentford FC win on 2026-04-27? — No0.7500won1$0
Will Olympique de Marseille win on 2026-04-26? — Yes0.6500lost2−$1
Will FC Porto win on 2026-04-26? — Yes0.7400won1$0
Will BV Borussia 09 Dortmund win on 2026-04-26? — Yes0.7100won1$0
Will VfB Stuttgart win on 2026-04-26? — Yes0.6200lost2−$1
Bitcoin Up or Down - April 24, 8:00PM-8:05PM ET — Up0.7000lost1−$1
Will Olympique Lyonnais win on 2026-04-25? — Yes0.6000won2$1
Will Liverpool FC win on 2026-04-25? — Yes0.6400won2$1
Will FC Bayern München win on 2026-04-25? — Yes0.6000won2$1
Will FC Barcelona win on 2026-04-25? — Yes0.6000won2$1
Bitcoin Up or Down - April 24, 7:35PM-7:40PM ET — Up0.8900lost1−$1
Bitcoin Up or Down - April 24, 7:30PM-7:35PM ET — Up0.8300won1$0
Bitcoin Up or Down - April 24, 6:55PM-7:00PM ET — Up0.8100won1$0
Bitcoin Up or Down - April 24, 6:45PM-6:50PM ET — Up0.8300won1$0
Bitcoin Up or Down - April 24, 6:40PM-6:45PM ET — Down0.7700won1$0
Bitcoin Up or Down - April 24, 6:25PM-6:30PM ET — Down0.5800won2$1
Bitcoin Up or Down - April 24, 6:20PM-6:25PM ET — Down0.6900won1$0
Bitcoin Up or Down - April 24, 6:15PM-6:20PM ET — Down0.6000won2$1
Bitcoin Up or Down - April 24, 6:00PM-6:05PM ET — Up0.6700won1$0
Bitcoin Up or Down - April 24, 7:25AM-7:30AM ET — Up0.8200won1$0
Will Real Madrid CF win on 2026-04-24? — Yes0.5200lost2−$1
Will SSC Napoli win on 2026-04-24? — Yes0.7200won1$0
Will Real Oviedo win on 2026-04-23? — No0.7100won1$0
Bitcoin Up or Down - April 23, 3:00PM-3:05PM ET — Down0.8400won1$0
Will Go Ahead Eagles win on 2026-04-23? — No0.6800won1$0
Spread: Manchester City FC (-1.5) — Manchester City FC0.6700lost1−$1
Will FC Bayern München win on 2026-04-22? — Yes0.6200won2$1
Spread: Paris Saint-Germain FC (-1.5) — Paris Saint-Germain FC0.6600won1$1

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 →