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
0.1115
across 81 resolved positions · lower is better
Skill vs own base rate
+51%
beating a trader who only knew how often they win
Calibration error
10.7pp
average gap between price paid and what happened
Win rate
65%
53 of 81 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%93%0%−3pp
10–25%517%40%+23pp
25–40%833%13%−21pp
40–60%1751%65%+14pp
60–75%869%63%−6pp
75–90%979%100%+21pp
90–100%2596%100%+4pp

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
$102.5K
11 open positions
Largest position
95%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
$37.0K
against $102.5K of open value

95% 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 $15.1K across 81 positions, with $33 of entry fees paid.

MarketPaidResultSizeP&L
Spain vs. Belgium: O/U 7.5 — Over0.0080lost1,600−$13
Will the Detroit Pistons win the 2026 NBA Finals? — No0.9100won81$7
Will the Los Angeles Clippers win the 2026 NBA Finals? — No0.9759won2,410$58
Will the San Antonio Spurs win the 2026 NBA Finals? — No0.9140won5,850$503
Warriors vs. Kings — Kings0.5500won4,865$2.2K
St. John's Red Storm vs. Kansas Jayhawks — Kansas Jayhawks0.3700lost1,984−$734
TCU Horned Frogs vs. Duke Blue Devils — Duke Blue Devils0.9200won2,992$239
Louisville Cardinals vs. Michigan State Spartans — Louisville Cardinals0.1200lost3,985−$478
Israel x Hamas ceasefire before August? — Yes0.2800lost18−$5
Will Al-Hilal win the FIFA Club World Cup? — No0.9372won12,489$785
Will Man City win the FIFA Club World Cup? — No0.8300won7,800$1.3K
Will the Cleveland Cavaliers win the 2025 NBA Finals? — Yes0.0717lost18,543−$1.3K
Will the Golden State Warriors win the 2025 NBA Finals? — No0.9825won25,264$443
Will the Indiana Pacers win the 2025 NBA Finals? — No0.9700won221$7
Will the Los Angeles Lakers win the 2025 NBA Finals? — No0.9340won9,369$618
Will Aston Villa vs. Newcastle end in a draw? — Yes0.0090lost10−$0
Will Biden finish his term? — Yes0.7600won500$120
Magic vs. Raptors — Magic0.5300won613$288
Magic vs. Pistons — Pistons0.5400won2,235$1.0K
Heat vs. Rockets — Heat0.2400won1,809$1.4K
Grizzlies vs. Thunder — Thunder0.7400won5,000$1.3K
Will Chelsea win on 2025-01-04? — No0.5199won816$392
Will Bournemouth vs. Everton end in a draw? — No0.7600won793$190
Bird flu pandemic in 2024? — No0.9200won555$44
Will Manchester United vs. Newcastle end in a draw? — No0.7300won471$127
Will Aston Villa vs. Brighton end in a draw? — No0.7400lost2,790−$2.1K
Will a nuclear weapon detonate in 2024? — Yes0.1200lost5−$1
Fed decreases interest rates by 50 bps after December 2024 meeting? — Yes0.3100lost444−$138
Will Tottenham vs. Chelsea end in a draw? — No0.9900won121$1
Will Manchester United vs. Nottingham Forest end in a draw? — No0.9990won6$0
Will Manchester United win on 2024-12-07? — No0.4200won1,217$706
Will Fulham win on 2024-12-05? — No0.5800lost866−$502
Will Newcastle win on 2024-12-04? — No0.9990won155$0
Will Aston Villa vs. Brentford end in a draw? — No0.7600won2$1
Will Arsenal vs. Manchester United end in a draw? — No0.8000won80$16
Will Villa win on 2024-11-23? — No0.4400won1,110$622
Will Arsenal win on 2024-11-23? — No0.3079lost3,478−$1.1K
Will Arsenal win on 2024-11-10? — No0.9990won53$0
Will Nottingham Forest vs. Newcastle end in a draw? — No0.7200won1,000$280
Will Leicester win on 2024-11-10? — No0.9000won763$76
Will Nottingham Forest win on 2024-11-10? — No0.6500won402$141
Will Spurs win on 2024-11-10? — No0.2100won5$4
Will Man City win on 2024-11-09? — No0.4500won6,400$3.5K
Will Fenerbahce beat AZ Alkmaar? — No0.5500won16$7
Fed rate cut by November 7? — Yes0.9990won5,000$5
Will Aston Villa beat Club Brugge? — Yes0.4900lost209−$102
Will the match between Paris Saint-Germain and Atletico Madrid end in a draw? — No0.7900won1,997$419
Will Aston Villa beat Club Brugge? — No0.5481won536$242
Will Donald Trump win the 2024 US Presidential Election? — Yes0.8829won38,102$4.5K
Will Borussia Dortmund beat Sturm Graz? — No0.1670lost164−$27
Will a Democrat win Pennsylvania Presidential Election? — Yes0.5200lost1,111−$578
Will a Democrat win Georgia Presidential Election? — Yes0.3900lost120−$47
Will a Democrat win Michigan Presidential Election? — Yes0.6600lost1,111−$733
Will a Republican win North Carolina Presidential Election? — No0.4400lost222−$98
Will a Democrat win Georgia Presidential Election? — No0.5900won555$228
Will Donald Trump win the 2024 US Presidential Election? — No0.4978lost555−$276
Will Michelle Obama win the 2024 US Presidential Election? — No0.9870won1,000$13
Will Robert F. Kennedy Jr. win the 2024 US Presidential Election? — No0.9900won100$1
Trump gets more black voters than in 2020? — Yes0.7500won86$22
Will a Republican win New Hampshire in the 2024 US Presidential Election? — Yes0.2600lost20−$5

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 →