Audit
Audit any address.
Paste a Polymarket wallet or a TAIL handle. You get the record TAIL can actually stand behind: a calibration grade, the checks that grade had to pass, the integrity flags on the row, and every resolved receipt underneath — losses included, nothing withheld, no account needed.
Sample cast@nqwizard0x4f2a…e91d
What the grade is
The grade is a band of the §7.3 calibration number, and nothing else. Calibration runs −1 to 1 on a published formula, where 0 is coin-flip pricing and 1 is perfect. It is graded rather than the score because the score (§7.2) is unbounded — banding it would invent a scale nobody published. Both formulas are on the methodology page.
- A≥ 0.70prices sharply, well clear of coin-flip noise
- B≥ 0.55consistently better priced than the market
- C≥ 0.40better than coin-flip, with room in it
- D> 0.00barely above coin-flip pricing
- F≤ 0.00at or below coin-flip pricing
Under 25 resolved markets there is no grade at all — not an F. §7.1 will not rank a record that thin and §7.3 will not take a Brier mean from it, so the honest output is the record with the letter withheld.
What gets flagged
Integrity flags are computed with the stats (§7.4). A flagged record keeps its badge and its receipts — flags mean “under review”, never silent deletion.
parlay_noisemulti-leg/combinatorial fills, excluded from score and shown separatelywash_suspectoffsetting buy/sell in the same market inside two minutes, repeatedanomalystake size more than 10× the trailing median