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
0.0266
across 6 resolved positions · lower is better
Skill vs own base rate
+88%
beating a trader who only knew how often they win
Calibration error
12.7pp
average gap between price paid and what happened
Win rate
33%
2 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%22%0%−2pp
10–25%124%0%−24pp
25–40%125%0%−25pp
75–90%182%100%+18pp
90–100%196%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
$134.5K
2 open positions
Largest position
99%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
$30.1K
against $134.5K of open value

99% 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 −$32.7K across 6 positions, with $1.8K of entry fees paid.

MarketPaidResultSizeP&L
Will Trump meet with Netanyahu by August 31, 2026? — Yes0.9600won927$37
Bab el-Mandeb Strait effectively closed by July 31? — Yes0.0374lost2,500−$94
Will the Fed increase interest rates by 50+ bps after the July 2026 meeting? — Yes0.0050lost114,713−$574
Will the Fed increase interest rates by 25 bps after the July 2026 meeting? — Yes0.2437lost51,594−$12.6K
Will there be no change in Fed interest rates after the July 2026 meeting? — No0.2527lost77,624−$19.6K
Will fewer than 220 ships transit the Bab el-Mandeb Strait between July 20-July 26? — Yes0.8178won437$80

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 →