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
0.2254
across 14 resolved positions · lower is better
Skill vs own base rate
−34%
beating a trader who only knew how often they win
Calibration error
30.9pp
average gap between price paid and what happened
Win rate
79%
11 of 14 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%220%50%+30pp
25–40%331%67%+36pp
40–60%653%83%+30pp
60–75%265%100%+35pp
75–90%186%100%+14pp

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
$0
0 open positions
Largest position
n/a
share of open capital in one contract
Half the book
n/a
positions hold half the exposure
Unrealised
$0
against $0 of open value

The resolved record

Every settled position, rebuilt from on-chain fills. Realised $2.2K across 14 positions, with $0 of entry fees paid.

MarketPaidResultSizeP&L
LoL: EXILE esports vs BRUTE (BO3) - Hitpoint Masters Regular Season — EXILE esports0.3600won1,333$853
LoL: BNK FearX Youth vs Hanwha Life Esports Challengers (BO5) - LCK Challengers League Play-In — Hanwha Life Esports Challengers0.3100lost124−$38
Will AFC Bournemouth win on 2026-08-23? — No0.8600won207$29
LoL: SK Gaming vs Movistar KOI (BO3) - LEC Regular Season — SK Gaming0.2500won1,044$783
LoL: Dplus KIA Challengers vs DN SOOPers Challengers (BO3) - LCK Challengers League Rounds 3-4 Challenge Group — Dplus KIA Challengers0.5633won209$91
LoL: NightBirds vs CITA Kaizen (BO3) - Hitpoint Masters Regular Season — CITA Kaizen0.1601lost502−$80
Bitcoin Up or Down - August 16, 9:25PM-9:30PM ET — Down0.5300won19$9
Bitcoin Up or Down - August 16, 9:15PM-9:20PM ET — Down0.6100won16$6
Bitcoin Up or Down - August 16, 9:10PM-9:15PM ET — Down0.5600won9$4
Will Santos FC win on 2026-08-16? — Yes0.2300won357$275
Will Tigres de la UANL win on 2026-08-15? — No0.5900won170$70
Will FC Eindhoven win on 2026-08-14? — No0.5100won174$85
Valorant: GIANTX vs Fnatic (BO3) - VCT EMEA Play-Ins — Fnatic0.7000won428$128
Will Paris Saint-Germain win on 2026-08-12? — No0.4400lost18−$8

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 →