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Prediction markets, read properly

See What the MarketHasn't Priced In Yet.

Every market has rules determining exactly what counts as YES or NO. Brierpoint analyzes those rules before resolution and flags wording, timing and resolver risks that could matter.

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Free · no wallet required · analytics & education, never trading advice

Iran leadership change by June 30, 2027?

Closes Jun 30, 2027

Market price
28.5¢ +2.5¢ (+9.6%)
30¢24.5¢
1 month
Gotcha riskRules parsed
High
Index 78 / 100
Wording ambiguityHigh
Source discretionHigh
Timing riskLow
Exceptional clausesMedium
Tradability
Medium
Spread
Depth
$46kwithin 5¢

Data: Polymarket · updated Sep 14, 10:47 AM UTC

Detect hidden risks

Spot the traps most traders never read

Brier-scored insights

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Objective, measurable analysis

Clear market explainers

Plain-English breakdowns

Track your edge

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See and improve your accuracy

Illustrative analysis — not a live market

Find the trap before it costs you.

Every market resolves on wording most traders never read. Brierpoint reads it on all of them and tells you where the resolver has room to move.

EconomicsPolymarket · closes with the advance estimate

Will US Q3 2027 GDP growth exceed 3.0%?

78 / 100High gotcha risk

The rules resolve on real GDP growth “as reported by the BEA,” but never say which report. Revisions of 0.4 points between estimates are routine, and the market closes the day the advance estimate lands — the one figure most likely to be revised.

Wording ambiguity
High
Score 94
Source discretion
Medium
Score 54
Timing risk
High
Score 81
Exceptional clauses
Low
Score 22
MediumBook depth $84K within 5¢ of mid
  • Plain-English rule analysis
  • Key risks and edge cases
  • Clear resolution details
  • Actionable insights, not just numbers

Illustrative previews — not live on the homepage

Three questions the price can't answer.

78 / 100High gotcha risk

Gotcha Risk Score

Flags resolution-rule traps — ambiguous wording, resolver discretion, timing risk — before you commit to a number.

Liquidity & Tradability

Shows whether the order book is deep enough that large orders won’t move the price against you.

Why It Moved

Soon

Links price moves to cited sources — and says “no clear catalyst identified” when the evidence isn’t there.

Illustrative — scoring ships in a later phase

The score that grades AI forecasters. Almost no trader tracks their own.

The Brier score rewards being right and being appropriately confident. 0.000 is perfect, 0.250 is a coin flip, and hedging can’t game it.

MarketForecastPrice thenOutcomeBrier
Will the ECB lower any key policy rate before July 2026?82%54¢YES0.032(0.82 − 1)² = 0.032
Will OPEC+ announce a production cut before July 2026?30%34¢NO0.090(0.30 − 0)² = 0.090
Will US Q1 2026 GDP growth exceed 3.0%?71%66¢NO0.504(0.71 − 0)² = 0.504

A confident miss costs 0.504. Scores average across every resolved forecast — one bad call is visible and survivable.

The standard scoring rule for probabilistic forecasts.

The measure used to benchmark forecasting models against one another.

Separates being right from getting lucky.

050100050100stated probability →

Example curve — not anyone’s record

Calibration: are your 70s really 70s?

The dashed line is perfect calibration: forecasts made at 70% resolve YES about 70% of the time. Points below it mean overconfidence, points above it underconfidence.

69%
where they said 70–80%
Slightly overconfident where you feel most sure. That gap is the thing worth knowing about your own judgment.

Example profile — no records exist yet

The record you build

Every forecast timestamped before resolution. Public, permanent and impossible to edit after the fact.

@example-forecaster
Verified track record
86Accuracy score
0.142Avg Brier · 30 resolved
17/30Beat the price at submission
ECB lowers a key rate before July 2026said 82% · price 54¢YES0.032
OPEC+ announces a cut before July 2026said 30% · price 34¢NO0.090
US Q1 2026 GDP growth exceeds 3.0%said 71% · price 66¢NO0.504

Profiles open once forecasting ships.

Coming in a later phase

The community forecast unlocks as the community grows

Community signals appear only after 50 forecasters lock in on a market. We never show below-threshold data, and we never fake it.

Unlock threshold0 / 50
Add yoursSignals stay hidden until the threshold is met

What prediction markets learned this week

One email, every Friday. What moved, why, and what the crowd saw first.

The weekly digest launches with the product.

What is prediction market analytics?

Prediction markets let people trade on the probability of real-world events. A price of 64¢ roughly means the market thinks an event is 64% likely. But a price alone hides three things: what the resolution rules actually count as YES, whether the posted price survives a modest trade, and why it last moved.

Brierpoint is an analytics and education layer for these markets. It explains resolution rules in plain language, scores their ambiguity, and measures tradability. Planned features attribute price moves to cited sources and let anyone log forecasts and build a verified record. Nothing here is trading or financial advice.

Smarter forecasts start here.

Clearer rules, stronger context, and a more honest view of the price.

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