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
0.0456
across 20 resolved positions · lower is better
Skill vs own base rate
+64%
beating a trader who only knew how often they win
Calibration error
4.9pp
average gap between price paid and what happened
Win rate
85%
17 of 20 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%41%25%+24pp
90–100%16100%100%+0pp

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
$366
1 open position
Largest position
100%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
−$0
against $366 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 $284 across 20 positions, with $0 of entry fees paid.

MarketPaidResultSizeP&L
Will Trump nominate Jerome Powell as the next Fed chair? — No0.9990won111$0
Will Croatia win the 2026 FIFA World Cup? — No0.9920won110$1
Will Jordan win the 2026 FIFA World Cup? — No0.9980won109$0
Exact Score: France 0 - 2 Spain? — Yes0.0450won296$283
Aleksandar Vučić out as Serbian President by June 30, 2026? — Yes0.9990won107$0
Will Union Saint-Gilloise win the 2025–26 Champions League? — No0.9990won108$0
Will PSV win the 2025–26 Champions League? — No0.9980won114$0
Will Nottm Forest win the 2025–26 English Premier League? — No0.9985won220$0
Will the price of Bitcoin be above $74,000 on March 7? — No0.9980won110$0
Will the Carolina Panthers win Super Bowl 2026? — Yes0.0050lost255−$1
Will the Indianapolis Colts win Super Bowl 2026? — Yes0.0030lost293−$1
Will the Indianapolis Colts win Super Bowl 2026? — No0.9980won106$0
Will the Las Vegas Raiders win Super Bowl 2026? — No0.9970won111$0
Will the Tennessee Titans win Super Bowl 2026? — No0.9970won110$0
Russia x Ukraine ceasefire by January 31, 2026? — No0.9990won105$0
Will Bitcoin reach $200,000 by December 31, 2025? — No0.9970won111$0
Will Superman be the top grossing movie of 2025? — No0.9980won109$0
Will Captain America: Brave New World be the top grossing movie of 2025? — No0.9980won113$0
Will Elon Musk post 520-539 tweets from December 16 to December 23, 2025? — Yes0.0020lost380−$1
Will Elon Musk post 240-259 tweets from November 18 to November 25, 2025? — No0.9990won110$0

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 →