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
0.0904
across 36 resolved positions · lower is better
Skill vs own base rate
+64%
beating a trader who only knew how often they win
Calibration error
11.8pp
average gap between price paid and what happened
Win rate
50%
18 of 36 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%104%0%−4pp
10–25%213%0%−13pp
25–40%532%40%+8pp
40–60%552%40%−12pp
60–75%463%100%+37pp
75–90%583%100%+17pp
90–100%595%100%+5pp

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
$70.3K
3 open positions
Largest position
99%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
−$8.1K
against $70.3K of open value

99% 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 $49.2K across 36 positions, with $442 of entry fees paid.

MarketPaidResultSizeP&L
Will Elon Musk post 180-199 tweets from July 31 to August 7, 2026? — Yes0.8600won335$47
Will there be no change in Fed interest rates after the July 2026 meeting? — Yes0.8327won42,278$7.1K
Will Lamine Yamal be the top goalscorer at the 2026 FIFA World Cup? — Yes0.0270lost40−$1
Will Ousmane Dembele be the top goalscorer at the 2026 FIFA World Cup? — Yes0.0710lost576−$41
Will Japan win the 2026 FIFA World Cup? — Yes0.0190lost8,888−$169
Will Norway win the 2026 FIFA World Cup? — Yes0.0270lost150−$4
Michael Olise: 1+ assists — Yes0.3000lost33−$10
Kylian Mbappé: 1+ goals — Yes0.4500lost22−$10
France vs. Spain: O/U 8.5 Total Corners — Over0.5400lost19−$10
Canada vs. Morocco: Team to Advance — Canada0.2900lost34−$10
Paraguay vs. France: Team to Advance — Paraguay0.0800lost125−$10
Will Argentina win on 2026-07-03? — No0.3600won139$89
Will Japan win on 2026-06-29? — Yes0.3900lost1,026−$400
Exact Score: Czechia 3 - 0 South Africa? — No0.9200won11$1
Czechia leading at halftime? — Yes0.9800won10$0
Will there be no change in Fed interest rates after the June 2026 meeting? — Yes0.9567won41,030$1.8K
Will there be no change in Fed interest rates after the April 2026 meeting? — Yes0.9735won35,910$953
Will there be no change in Fed interest rates after the March 2026 meeting? — Yes0.8975won50,304$5.2K
US recession in 2025? — No0.5500won712$320
No change in Fed interest rates after January 2026 meeting? — Yes0.9099won46,351$4.2K
Skye Valadez confirmed perp? — Yes0.1300lost3,500−$455
Fed decreases interest rates by 25 bps after December 2025 meeting? — Yes0.5162won117,466$56.8K
No change in Fed interest rates after December 2025 meeting? — Yes0.5236lost51,287−$26.9K
Fed decreases interest rates by 25 bps after October 2025 meeting? — Yes0.8019won6,339$1.3K
Fed decreases interest rates by 25 bps after September 2025 meeting? — Yes0.7700won804$185
Dota 2: Team Falcons vs. BetBoom Team — Team Falcons0.6200won81$31
Will Zelenskyy wear a suit before July? — Yes0.0084lost99,311−$834
Will Erling Haaland be the top goalscorer in the EPL? — No0.2597won193$143
Will another player be the top goalscorer in the EPL? — Yes0.0399lost627−$25
Will Cole Palmer be the top goalscorer in the EPL? — Yes0.0800lost125−$10
Chelsea wins the Premier League? — Yes0.0400lost250−$10
Will RFK be a member of the Trump administration? — No0.0358lost1,397−$50
South Korean President impeached in 2024? — No0.1300lost500−$65
Fed decreases interest rates by 25 bps after December 2024 meeting? — Yes0.6800won147$47
Will Donald Trump win the 2024 US Presidential Election? — Yes0.6230won161$61
Will T1 win LoL Worlds 2024? — Yes0.6100won41$16

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 →