Free public detail for one prediction-market event by venue + slug: outcomes with probabilities, price snapshots, resolution evidence, crossSourceMatches (the SAME real-world question priced on other venues — read probability divergence directly from it), referenceProbability when present (CoinRithm's canonical cross-venue number: the liquidity-weighted median Yes probability across matched real-money venues, with venueCount and spreadPoints — quote all three together, venues disagree and the spread says by how much), recent whale trades on the event, related events, related news, and volumeHistory when present (daily volume points captured since 2026-07-02 — read the event's volume trend directly from it). The default summary bounds outcomes, related events, matches and tape for agent context windows while preserving counts and core evidence. Set detail=full only when the untouched provider-rich record is needed. This is the cross-venue research view; for tradability use pm_quote. No API key required.