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
0.2386
across 205 resolved positions · lower is better
Skill vs own base rate
+4%
beating a trader who only knew how often they win
Calibration error
6.2pp
average gap between price paid and what happened
Win rate
47%
97 of 205 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%18%0%−8pp
10–25%816%38%+21pp
25–40%3535%37%+3pp
40–60%11150%42%−8pp
60–75%3866%63%−3pp
75–90%1180%82%+2pp
90–100%194%100%+6pp

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
$48.1K
4 open positions
Largest position
59%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
$129
against $48.1K of open value

59% 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 −$168.2K across 205 positions, with $652 of entry fees paid.

MarketPaidResultSizeP&L
Winston-Salem Open: Pablo Carreno Busta vs Adolfo Vallejo — Pablo Carreno Busta0.5500lost801−$441
Crystal Palace FC vs. Manchester City FC: Crystal Palace FC O/U 3.5 Corners — Over0.5200lost1,959−$1.0K
Counter-Strike: Team Falcons vs Lynn Vision - Map 1 Winner — Team Falcons0.7700won3,372$775
Toronto Tempo vs. Seattle Storm: O/U 175.5 — Under0.5400won185$85
Portland Fire vs. Dallas Wings: O/U 176.5 — Under0.5200won10,000$4.8K
Seattle Mariners vs. Houston Astros — Houston Astros0.5300lost9,434−$5.0K
Martin Odegaard: Anytime Goalscorer — Yes0.2593won687$509
Dota 2: Team Spirit vs TEAM VISION (BO3) - The International Playoffs — TEAM VISION0.6300won31,746$11.7K
Spread: Houston Astros (-1.5) — Los Angeles Angels0.5500won7,575$3.4K
Cincinnati Open: Mananchaya Sawangkaew vs Anna Blinkova — Mananchaya Sawangkaew0.5400lost1,180−$637
Todi: Daniel Michalski vs Lukas Neumayer — Daniel Michalski0.3000lost2−$1
LoL: Estral Esports vs RMD Gaming - Game 2 Winner — Estral Esports0.8700won5$1
Game Handicap: EST (-1.5) vs RMD Gaming (+1.5) — Estral Esports0.7700won1,388$319
LoL: Brod n Friends vs DMG Esports - Game 2 Winner — DMG Esports0.5000won12$6
National Bank Open: Tallon Griekspoor vs Daniel Merida Aguilar — Tallon Griekspoor0.5500lost20,000−$11.0K
Dota 2: Aurora vs BoomBoys (BO3) - The International Elimination Round — Aurora0.5900lost12,712−$7.5K
National Bank Open: Alexandra Eala vs Belinda Bencic — Belinda Bencic0.5200won7,025$3.4K
Portsmouth FC vs. Queens Park Rangers FC: O/U 2.5 — Under0.5300lost1,689−$895
Bolton Wanderers FC vs. Preston North End FC: O/U 2.5 — Under0.5200lost742−$386
Bristol City FC vs. Millwall FC: O/U 2.5 — Over0.4900lost202−$99
Spread: Chicago Cubs (-1.5) — St. Louis Cardinals0.5400lost3,339−$1.8K
National Bank Open: Casper Ruud vs Joao Fonseca — Joao Fonseca0.5400won16,031$7.4K
Counter-Strike: Legacy vs FaZe (BO3) - Esports World Cup Group B — Legacy0.4900lost30,612−$15.0K
Atlanta Dream vs. Connecticut Sun: O/U 174.5 — Under0.5100won1,008$494
PFK CSKA Sofia vs. MH Maccabi Tel Aviv: O/U 2.5 — Over0.4900won1,999$1.0K
National Bank Open: Rafael Jodar vs Lorenzo Musetti — Lorenzo Musetti0.4500lost6,445−$2.9K
Hagen: Carlos Taberner vs Marko Topo — Carlos Taberner0.3900won160$98
Grodzisk Mazowiecki: Joel Schwaerzler vs Aziz Dougaz — Aziz Dougaz0.4400lost10−$4
Hagen: Chun-Hsin Tseng vs Tom Gentzsch — Tom Gentzsch0.5695won107$46
Istanbul 2: Tiago Pereira vs Max Basing — Tiago Pereira0.4200lost25−$11
Hagen: Carlos Taberner vs Juan Bautista Torres — Carlos Taberner0.5100won16,619$8.1K
Canadian Open: Zachary Svajda vs Denis Shapovalov — Denis Shapovalov0.5800lost5,183−$3.0K
Lexington: Henry Searle vs Lloyd Harris — Henry Searle0.4579lost2,702−$1.2K
Hagen: Guy Den Ouden vs Alexandre Muller — Guy Den Ouden0.5377won10,000$4.6K
Canadian Open: Matteo Berrettini vs Mariano Navone — Mariano Navone0.3851won19,356$11.9K
UFC Fight Night: Bruno Lopes vs. Diyar Nurgozhay (Light Heavyweight, Main Card) — Diyar Nurgozhay0.6100won788$307
UFC Fight Night: Diego Ferreira vs. Billy Quarantillo (Lightweight, Main Card) — Diego Ferreira0.6200won5,174$2.0K
UFC Fight Night: Mateusz Gamrot vs. Quillan Salkilld (Lightweight, Main Card) — Mateusz Gamrot0.4300lost3,926−$1.7K
Washington Nationals vs. Atlanta Braves — Washington Nationals0.4500lost5,583−$2.5K
ITF Pergamino: Carolina Alves vs Giorgia Pedone — Giorgia Pedone0.6632lost1,019−$676
Canadian Open, Qualification: Marcos Giron vs Pablo Llamas Ruiz — Pablo Llamas Ruiz0.3300lost819−$270
ITF Pergamino: Justina Gonzalez Daniele vs Francesca Mattioli — Justina Gonzalez Daniele0.6274lost5,519−$3.5K
Mubadala Citi DC Open: Matteo Arnaldi vs Lorenzo Musetti — Matteo Arnaldi0.4094lost935−$383
UFC Fight Night: Dennis Buzukja vs. Bogdan Grad (Featherweight, Prelims) — Dennis Buzukja0.3698lost4,872−$1.8K
UFC Fight Night: Ludovit Klein vs. Tofiq Musayev (Lightweight, Prelims) — Ludovit Klein0.6800lost2,416−$1.6K
LoL: Hanwha Life Esports vs Dplus KIA (BO3) - LCK Round 3-4 Legend Group — Hanwha Life Esports0.6600lost20,966−$13.8K
Fight to Go the Distance? — Yes0.4277lost355−$152
UFC Fight Night: Ismael Bonfim vs. Axel Sola (Lightweight, Prelims) — Ismael Bonfim0.3700lost1,841−$681
O/U 2.5 Rounds — Over0.5000lost63−$32
Athletics vs. Minnesota Twins: O/U 9.5 — Under0.4800won20,000$10.4K
Valorant: 100 Thieves vs KRÜ Esports (BO3) - VCT Americas Stage 2 Group Omega — KRÜ Esports0.2700lost5,796−$1.6K
Swedish Open: Adolfo Vallejo vs Luciano Darderi — Adolfo Vallejo0.3100lost35,520−$11.0K
Set Handicap: Collignon (-1.5) vs Cerundolo (+1.5) — Cerundolo0.6655won3,691$1.2K
Will Botafogo FC win on 2026-07-23? — No0.6300lost4,171−$2.6K
Minnesota Lynx vs. Seattle Storm: O/U 179.5 — Over0.4700lost15−$7
Cincinnati Reds vs. Seattle Mariners: O/U 8.5 — Under0.5000won3,035$1.5K
Spread: Athletics (-1.5) — Arizona Diamondbacks0.6300won3,704$1.4K
O/U 1.5 Rounds — Under0.4800won105$55
UFC Fight Night: Austin Bashi vs. Jose Miguel Delgado (Featherweight, Prelims) — Austin Bashi0.5229lost6,759−$3.5K
UFC Fight Night: Jean-Paul Lebosnoyani vs. Seokhyeon Ko (Welterweight, Prelims) — Jean-Paul Lebosnoyani0.3500won17$11

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 →