Polymarket Category Source Quality Scorecard
Last verified: 2026-07-09 PDT
Category scanning is useful only if the sources are clean enough to trust. A sports final, an app-store chart, an inflation release, a weather threshold, and a geopolitical headline market do not have the same evidence burden.
This page gives you a source-quality scorecard for Polymarket research. It is educational. It does not tell you what to trade, and it does not treat crowd price as a recommendation.
Key concepts in plain English
- ▸Resolution source: the official or stated source used to decide the market outcome.
- ▸Rule clarity: how easy it is to understand what counts as Yes, No, or another outcome.
- ▸Measurement risk: the risk that the event is real but the market definition is fuzzy.
- ▸Timestamp risk: the risk that the source is checked at a specific time or uses a specific window.
- ▸Category risk: the recurring ambiguity that tends to show up in a market category.
What current research showed
Polymarket docs reviewed this run list market-data endpoints such as order books, spreads, prices, and developer tooling, plus concepts such as resolution and negative-risk markets. Public Gamma API samples showed large multi-outcome events such as World Cup winner markets, election-style nominee markets, F1 championship markets, and app-ranking markets with Apple App Store source instructions.
That mix matters. Some markets have an obvious official source. Others rely on definitions, deadlines, announcements, credible reporting, or exact chart placement. Source quality deserves its own score before any price model.
The 10-point source quality scorecard
| Score item | 0 points | 1 point | 2 points |
|---|---|---|---|
| Source named | No clear source | Source implied | Source named clearly |
| Rule text | Vague | Mostly clear | Specific and testable |
| Deadline | Missing | Present but fuzzy | Exact date/time/window |
| Measurement | Subjective | Partly measurable | Fully measurable |
| Edge cases | Ignored | Some mentioned | Cancellations, ties, delays, or eliminations addressed |
A market scoring 8-10 is easier to audit. A 5-7 score needs review notes. A market below 5 belongs in the research parking lot until the rules become clearer.
Category-specific checks
Sports futures
Review official league or event source, elimination language, postponement rules, and whether the market is binary or part of a multi-outcome event.
Macro and economic data
Write down the exact release, agency, timestamp, revision policy, and threshold. A CPI-style market is different from a broad recession narrative market.
App-ranking and culture markets
Current Gamma samples included app-ranking markets with App Store chart instructions. These require exact rank, country, device, chart, date, and time notes.
Weather markets
Weather pages should capture station, region, measurement unit, threshold, time window, and source. A missing station can change the whole interpretation.
Geopolitics and elections
Use extra caution around official office changes, announcements, contested results, withdrawals, and consensus-reporting language.
Bucko workflow
Use Bucko as a research notebook: copy the market question, description, source line, deadline, category score, spread/depth note, and screenshots. Then add a review tag: clean, needs review, or source-blocked.
If you are eligible for the US app offer, use code BUCKO for a $50 deposit bonus on the Polymarket US app: https://www.poly.market/BUCKO. Confirm current app screens and offer terms before depositing.
Internal links
- ▸Category volume: Polymarket category volume research guide
- ▸Market rules: Polymarket market rules checklist
- ▸Resolution evidence: Polymarket resolution evidence template
Sources and last-verified notes
Last verified: 2026-07-09 PDT.
Sources reviewed: Polymarket docs llms.txt and llms-full.txt; Polymarket public Gamma API active event and market samples checked on 2026-07-09 PDT with a browser user agent. Samples included World Cup winner, 2028 U.S. political nominee/winner events, F1 champion, geopolitics, and app-ranking markets. No newer official affiliate term sheet was independently located in this run.