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
0.1785
across 550 resolved positions · lower is better
Skill vs own base rate
+28%
beating a trader who only knew how often they win
Calibration error
1.7pp
average gap between price paid and what happened
Win rate
45%
246 of 550 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%595%5%+0pp
10–25%7418%14%−4pp
25–40%10432%34%+1pp
40–60%17349%49%−0pp
60–75%6468%70%+3pp
75–90%3881%87%+6pp
90–100%3896%95%−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
$13.3K
5 open positions
Largest position
100%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
$5.0K
against $13.3K 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 $52.9K across 550 positions, with $834 of entry fees paid.

MarketPaidResultSizeP&L
Will SpaceX's public ticker be another ticker? — Yes0.6940won10$3
Los Angeles Dodgers vs. Atlanta Braves — Los Angeles Dodgers0.4800lost35,555−$17.1K
Winston-Salem Open: Aleksandar Kovacevic vs Stefanos Tsitsipas — Aleksandar Kovacevic0.3100won35$24
US Open, Qualification WTA: Moyuka Uchijima vs Lucie Havlickova — Lucie Havlickova0.3000won18,238$12.8K
Will Vinicius Junior join Arsenal? — Yes0.3610lost982−$355
Cincinnati Open: Arthur Fils vs Frances Tiafoe — Arthur Fils0.5600won35,000$15.4K
Exact Score: Crystal Palace FC 1 - 0 Manchester City FC? — No0.9540won110$5
Will Manchester City FC win on 2026-08-28? — Yes0.5800won20$8
Will FC Bayern München win on 2026-08-28? — No0.2100lost10−$2
Cincinnati Open: Taylor Fritz vs Brandon Nakashima — Brandon Nakashima0.5317won965$452
Cincinnati Open: Tommy Paul vs Flavio Cobolli — Tommy Paul0.5100lost23,266−$11.9K
Counter-Strike: Team Falcons vs Lynn Vision (BO3) - BLAST Open Porto Group B — Lynn Vision0.1986lost208−$41
Cincinnati Open: Iga Swiatek vs Maria Sakkari — Maria Sakkari0.4800lost93−$44
Cincinnati Open: Arthur Rinderknech vs Juan Manuel Cerundolo — Juan Manuel Cerundolo0.4900won8,604$4.4K
Cincinnati Open: Quentin Halys vs Alex de Minaur — Quentin Halys0.4700lost421−$198
Cincinnati Open: Daniel Merida Aguilar vs Marin Cilic — Marin Cilic0.4100lost10−$4
National Bank Open: Joao Fonseca vs Ben Shelton — Ben Shelton0.5300won1,306$614
LoL: Kiwoom DRX vs HANJIN BRION (BO3) - LCK Round 3-4 Rise Group — Kiwoom DRX0.4900lost95−$47
National Bank Open: Marta Kostyuk vs Iga Swiatek — Marta Kostyuk0.4300lost7,661−$3.3K
National Bank Open: Arthur Rinderknech vs Brandon Nakashima — Arthur Rinderknech0.5300lost126−$67
National Bank Open: Casper Ruud vs Joao Fonseca — Casper Ruud0.5304lost141−$75
Counter-Strike: PARIVISION vs B8 (BO1) - Esports World Cup Group C — B80.3900won20,000$12.2K
Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala — Alexandra Eala0.3700won2,112$1.3K
Will Isaac del Toro win the White Jersey at the 2026 Tour De France? — Yes0.5400won49$23
Mubadala Citi DC Open: Diana Shnaider vs Liudmila Samsonova — Liudmila Samsonova0.1700lost10−$2
Mubadala Citi DC Open: Diana Shnaider vs Liudmila Samsonova — Diana Shnaider0.7700won10$2
Mubadala Citi DC Open: Emma Navarro vs Elisabetta Cocciaretto — Elisabetta Cocciaretto0.2900won1,147$815
Estoril Open: Luca Van Assche vs Alexander Blockx — Luca Van Assche0.5015won475$237
Livesport Prague Open: Dominika Salkova vs Barbora Krejcikova — Dominika Salkova0.1100lost10−$1
Will Donald Trump announce that the United States blockade of the Strait of Hormuz has been lifted by July 31, 2026? — Yes0.5400won5$2
Croatia Open: Daniel Merida Aguilar vs Damir Dzumhur — Damir Dzumhur0.1539lost5,000−$770
Will France reach the 2026 FIFA World Cup final? — No0.4100won736$434
Will Belgium win the 2026 FIFA World Cup? — Yes0.0133lost256,145−$3.4K
Will Saudi Arabia finish last in Group H in the 2026 FIFA World Cup Group Stage? — Yes0.4400won11$6
World Cup Goals H2H: Messi vs. Ronaldo — Ronaldo0.4200lost506−$213
Will Portugal win the 2026 FIFA World Cup? — No0.9219won1,190$93
Will England win the 2026 FIFA World Cup? — Yes0.1120lost274−$31
Will Brazil win the 2026 FIFA World Cup? — Yes0.0860lost134,228−$11.5K
Will Netherlands win the 2026 FIFA World Cup? — Yes0.0336lost230,094−$7.7K
Will Senegal win the 2026 FIFA World Cup? — Yes0.0080lost30,000−$240
Will Germany win the 2026 FIFA World Cup? — Yes0.0538lost84,759−$4.6K
Will Colombia win the 2026 FIFA World Cup? — Yes0.0170lost124,517−$2.1K
Will Portugal win the 2026 FIFA World Cup? — Yes0.0685lost26,352−$1.8K
Will Norway win the 2026 FIFA World Cup? — Yes0.0220lost12,346−$272
Will Argentina win the 2026 FIFA World Cup? — Yes0.0910lost6,972−$634
Will Spain win the 2026 FIFA World Cup? — Yes0.1590won303$255
Will France win the 2026 FIFA World Cup? — Yes0.1112lost34,268−$3.8K
Will Italy win the 2026 FIFA World Cup? — No0.9923won14,638$113
Wimbledon ATP: Jannik Sinner vs Alexander Zverev — Jannik Sinner0.8000won4,275$855
Will Spain be eliminated in the Round of 16 of the World Cup? — Yes0.3700lost994−$368
Will Czechia be eliminated in Group Stage stage of the World Cup? — No0.2400lost148−$35
Ousmane Dembélé: 1+ goals — No0.8300lost2,095−$1.7K
Wimbledon WTA: Karolina Muchova vs Linda Noskova — Karolina Muchova0.5600lost2,395−$1.3K
Wimbledon WTA: Marta Kostyuk vs Linda Noskova — Marta Kostyuk0.5653lost10,275−$5.8K
Wimbledon ATP: Felix Auger-Aliassime vs Novak Djokovic — Novak Djokovic0.4000won5,048$3.0K
Wimbledon WTA: Naomi Osaka vs Karolina Muchova — Naomi Osaka0.5000lost10,000−$5.0K
Wimbledon WTA: Jessica Pegula vs Coco Gauff — Jessica Pegula0.3000lost335−$101
Will Belgium reach the Semifinals at the 2026 FIFA World Cup? — Yes0.1430lost486−$70
Lautaro Martínez: 1+ goals — No0.7800won2,120$466
Wimbledon ATP: Felix Auger-Aliassime vs Alejandro Davidovich Fokina — Alejandro Davidovich Fokina0.5900lost64−$38

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 →