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
0.0590
across 6 resolved positions · lower is better
Skill vs own base rate
+76%
beating a trader who only knew how often they win
Calibration error
17.3pp
average gap between price paid and what happened
Win rate
50%
3 of 6 paid out

Only 6 resolved positions. Below about 8 these scores are noise rather than signal: a couple of lucky or unlucky resolutions move them entirely. Treat everything here as provisional.

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%13%0%−3pp
10–25%119%0%−19pp
40–60%152%0%−52pp
75–90%285%100%+15pp
90–100%1100%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
$56.0K
497 open positions
Largest position
28%
share of open capital in one contract
Half the book
3
positions hold half the exposure
Unrealised
$25.0K
against $56.0K of open value

The resolved record

Every settled position, rebuilt from on-chain fills. Realised $28 across 6 positions, with $0 of entry fees paid.

MarketPaidResultSizeP&L
Will Donald Trump post 160-179 Truth Social posts from August 18 to August 25, 2026? — No0.8200won50$9
Rocket Lab (RKLB) Up or Down on August 13? — Up0.5200lost5−$3
Will Lindsey Graham be the Republican nominee for Senate in South Carolina? — Yes0.8800won34$4
US x Iran ceasefire extended by April 22, 2026? — No0.9972won23,900$66
Will NVIDIA be the largest company in the world by market cap on March 31? — No0.0280lost36−$1
Will Ethereum dip to $2,050 on March 26? — No0.1900lost247−$47

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 →