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
0.2249
across 37 resolved positions · lower is better
Skill vs own base rate
+8%
beating a trader who only knew how often they win
Calibration error
15.1pp
average gap between price paid and what happened
Win rate
43%
16 of 37 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
10–25%418%25%+7pp
25–40%529%20%−9pp
40–60%1053%30%−23pp
60–75%1068%50%−18pp
75–90%679%67%−12pp
90–100%295%100%+5pp

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
$102.6K
2 open positions
Largest position
100%
share of open capital in one contract
Half the book
1
position holds half the exposure
Unrealised
$17.5K
against $102.6K 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 −$5.3K across 37 positions, with $2.7K of entry fees paid.

MarketPaidResultSizeP&L
Will Trump nominate Kevin Warsh as the next Fed chair? — Yes0.4221won3,935$2.3K
Will Trump nominate Kevin Hassett as the next Fed chair? — Yes0.5951lost6,939−$4.1K
Will Rodri stay at Manchester City? — Yes0.1540lost65−$10
Bitcoin Up or Down - August 15, 2:30PM-2:35PM ET — Down0.5300lost19−$10
Bitcoin Up or Down - August 15, 2:25PM-2:30PM ET — Down0.7019won14$4
Bitcoin Up or Down - August 15, 2:20PM-2:25PM ET — Up0.5320won47$22
Bitcoin Up or Down - August 15, 2:05PM-2:10PM ET — Down0.4600lost11−$5
Bitcoin Up or Down - August 15, 2:00PM-2:05PM ET — Up0.5100lost10−$5
Bitcoin Up or Down - August 15, 1:55PM-2:00PM ET — Up0.9900won5$0
Will Manchester City FC win on 2026-02-01? — Yes0.5800lost28−$16
Will Jannik Sinner win the 2026 Australian Open? — Yes0.5365lost5,555−$3.0K
No change in Fed interest rates after January 2026 meeting? — Yes0.8100won1,800$342
Fed decreases interest rates by 25 bps after January 2026 meeting? — Yes0.2300lost123−$28
Will Arsenal FC win on 2026-01-17? — Yes0.5296lost566−$300
Will Manchester United FC vs. Manchester City FC end in a draw? — Yes0.2700lost182−$49
Manchester United FC vs. Brighton & Hove Albion FC: Both Teams to Score — No0.3200lost63−$20
Manchester United FC vs. Brighton & Hove Albion FC: O/U 3.5 — Under0.5779won183$77
Spread: Arsenal FC (-2.5) — Portsmouth FC0.6532lost95−$62
Will West Ham United FC vs. Queens Park Rangers FC end in a draw? — Yes0.6700won149$49
Will the price of Bitcoin be above $92,000 on January 9? — No0.9100won133$12
Will the price of Bitcoin be above $90,000 on January 9? — Yes0.7409won121$31
Maduro mugshot released by January 9? — Yes0.7533lost133−$100
Will Arsenal FC vs. Liverpool FC end in a draw? — Yes0.2800won154$111
Will Arsenal FC win on 2026-01-08? — Yes0.6300lost159−$100
Will Brighton & Hove Albion FC win on 2026-01-07? — Yes0.1290lost155−$20
Will Manchester City FC vs. Chelsea FC end in a draw? — Yes0.2100won476$376
Will Arsenal FC win on 2026-01-03? — Yes0.6500won508$178
Will Aston Villa FC vs. Nottingham Forest FC end in a draw? — Yes0.2749lost364−$100
Will Manchester City FC win on 2026-01-01? — Yes0.7000lost21−$15
Will Liverpool FC win on 2026-01-01? — Yes0.6800lost147−$100
Lighter market cap (FDV) >$1B one day after launch? — Yes0.8400won600$96
Will Eight die in "Stranger Things: Season 5"? — Yes0.7089won566$165
Will Trump meet with Zelenskyy by December 31? — No0.7936lost1,000−$794
TikTok sale announced in 2025? — Yes0.7624won1,314$312
Will Crystal Palace FC vs. Tottenham Hotspur FC end in a draw? — Yes0.2900lost345−$100
Spread: Aston Villa FC (-1.5) — Manchester United FC0.7700won109$25
Thailand x Cambodia ceasefire by December 31? — No0.6200lost643−$399

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 →