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
0.2364
across 155 resolved positions · lower is better
Skill vs own base rate
+5%
beating a trader who only knew how often they win
Calibration error
4.6pp
average gap between price paid and what happened
Win rate
50%
78 of 155 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%11%0%−1pp
10–25%121%0%−21pp
25–40%1534%20%−14pp
40–60%12550%53%+3pp
60–75%1064%60%−4pp
75–90%384%100%+16pp

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
$6.7K
6 open positions
Largest position
30%
share of open capital in one contract
Half the book
2
positions hold half the exposure
Unrealised
−$553
against $6.7K of open value

The resolved record

Every settled position, rebuilt from on-chain fills. Realised −$83 across 155 positions, with $3.8K of entry fees paid.

MarketPaidResultSizeP&L
Toronto Blue Jays vs. Chicago Cubs: O/U 6.5 — Over0.5900lost6,012−$3.5K
Toronto Blue Jays vs. San Diego Padres — Toronto Blue Jays0.5500lost909−$500
Houston Astros vs. Texas Rangers — Texas Rangers0.5700won877$377
Athletics vs. Chicago White Sox — Athletics0.4379lost11,364−$5.0K
Cleveland Guardians vs. Miami Marlins — Miami Marlins0.5000lost10,000−$5.0K
Colorado Rockies vs. Los Angeles Dodgers — Colorado Rockies0.2520won19,763$14.8K
Colorado Rockies vs. Los Angeles Dodgers — Los Angeles Dodgers0.6830lost176−$120
PortlandFire vs. Connecticut Sun: O/U 166.5 — Over0.5300won126$59
Spread: Washington Mystics (-2.5) — Toronto Tempo0.5200lost223−$116
Los Angeles Sparks vs. Atlanta Dream: O/U 179.5 — Under0.4500lost2,202−$991
Los Angeles Sparks vs. Atlanta Dream: O/U 181.5 — Over0.4800won98$51
LoL: E WIE EINFACH E-SPORTS vs Unicorns Of Love Sexy Edition (BO1) - Prime League 1st Division Regular Season — Unicorns Of Love Sexy Edition0.5300won44$21
LoL: ROSSMANN Centaurs vs Team Orange Gaming (BO1) - Prime League 1st Division Regular Season — Team Orange Gaming0.5100won18$9
Colorado Rockies vs. San Francisco Giants: O/U 9.5 — Over0.4900lost1,020−$500
Boston Red Sox vs. New York Mets: O/U 8.5 — Over0.4500lost11−$5
Philadelphia Phillies vs. Detroit Tigers: O/U 7.5 — Over0.4400lost11−$5
Seattle Mariners vs. Tampa Bay Rays: O/U 7.5 — Under0.4700lost11−$5
New York Liberty vs. Toronto Tempo: O/U 176.5 — Over0.5200won10$5
Spread: New York Liberty (-7.5) — New York Liberty0.4700lost10−$5
Milwaukee Brewers vs. Arizona Diamondbacks — Arizona Diamondbacks0.4300lost4,930−$2.1K
Seattle Storm vs. Atlanta Dream: O/U 168.5 — Under0.5197won1,116$536
Pittsburgh Pirates vs. Washington Nationals — Pittsburgh Pirates0.4100lost12,195−$5.0K
Spread: Indiana Fever (-6.5) — Indiana Fever0.5000lost9,763−$4.9K
Tampa Bay Rays vs. Kansas City Royals — Kansas City Royals0.4700lost10,443−$4.9K
Spread: Phoenix Mercury (-3.5) — Chicago Sky0.5000won261$131
Los Angeles Angels vs. Texas Rangers: O/U 7.5 — Over0.4400won227$127
Los Angeles Dodgers vs. Athletics — Athletics0.3900lost15,284−$6.0K
Philadelphia Phillies vs. Cincinnati Reds: O/U 9.5 — Over0.4500lost222−$100
Toronto Blue Jays vs. San Francisco Giants: O/U 7.5 — Over0.5000won200$100
Minnesota Twins vs. Houston Astros — Minnesota Twins0.4500won4,100$2.3K
Spread: Milwaukee Brewers (-1.5) — Milwaukee Brewers0.3900lost256−$100
Spread: Philadelphia Phillies (-1.5) — Kansas City Royals0.4600won153$83
Houston Astros vs. Washington Nationals: O/U 10.5 — Under0.5600lost179−$100
Golden State Valkyries vs. Washington Mystics: O/U 157.5 — Under0.5400won10$4
Cincinnati Reds vs. Milwaukee Brewers — Cincinnati Reds0.4400lost17,045−$7.5K
Indiana Fever vs. Las Vegas Aces: O/U 180.5 — Over0.5100lost66−$34
Spread: Milwaukee Brewers (-1.5) — Arizona Diamondbacks0.5400lost185−$100
Spread: Las Vegas Aces (-9.5) — Chicago Sky0.5100won255$125
Arizona Diamondbacks vs. Tampa Bay Rays — Arizona Diamondbacks0.4500lost11,111−$5.0K
Chicago Cubs vs. Milwaukee Brewers — Chicago Cubs0.3200lost12,004−$3.8K
Spread: Milwaukee Brewers (-1.5) — Cincinnati Reds0.5500won182$82
Los Angeles Dodgers vs. Athletics: O/U 10.5 — Over0.5300lost189−$100
Texas Rangers vs. Toronto Blue Jays — Texas Rangers0.4300won11,628$6.6K
Philadelphia Phillies vs. Washington Nationals — Washington Nationals0.4600lost10,870−$5.0K
Will Bitcoin hit $150k by June 30, 2026? — Yes0.0090lost1,000−$9
Spread: Philadelphia Phillies (-1.5) — Pittsburgh Pirates0.5000lost6,000−$3.0K
Philadelphia Phillies vs. Washington Nationals — Philadelphia Phillies0.6300won7,937$2.9K
New York Yankees vs. Detroit Tigers — Detroit Tigers0.5100won9,804$4.8K
Kansas City Royals vs. Tampa Bay Rays — Kansas City Royals0.3700won13,514$8.5K
Texas Rangers vs. Miami Marlins — Texas Rangers0.4400won11,111$6.2K
Milwaukee Brewers vs. Cincinnati Reds — Cincinnati Reds0.4200lost1,334−$560
Spread: Baltimore Orioles (-1.5) — Baltimore Orioles0.4700lost1,749−$822
Milwaukee Brewers vs. Atlanta Braves — Atlanta Braves0.5449lost395−$215
San Diego Padres vs. Texas Rangers — Texas Rangers0.6000won8,333$3.3K
Minnesota Twins vs. Arizona Diamondbacks — Minnesota Twins0.4400won11,364$6.4K
Cincinnati Reds vs. New York Yankees — Cincinnati Reds0.4700won10,638$5.6K
New York Mets vs. Philadelphia Phillies — New York Mets0.3768lost13,158−$5.0K
Baltimore Orioles vs. Los Angeles Dodgers — Baltimore Orioles0.3366won13,186$8.7K
Los Angeles Angels vs. Athletics — Athletics0.6000lost1,566−$940
Atlanta Braves vs. San Francisco Giants: O/U 8.5 — Over0.5100lost4,382−$2.2K

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 →