List prediction outcomes
Returns prediction outcome definitions with volume stats. Each outcome (e.g. “Canned Tuna”) has Yes/No sides and may belong to a question. Use question_id to get all outcomes for a question.
Also available as /hip4/markets (alias).
Authorizations
Include in every request header as X-API-Key: <your_key>.
Query Parameters
Filter by outcome ID
Filter by question ID — returns all outcomes for that question
Filter by class (e.g. priceBinary)
Filter by underlying asset (e.g. BTC, HYPE)
x <= 10000Response
OK
Unique outcome identifier
Prediction market coin (e.g. #11)
Outcome name (e.g. Canned Tuna, Recurring)
Outcome description or structured metadata for priceBinary
Market class (e.g. priceBinary). Empty for custom outcomes.
Underlying asset (e.g. BTC, HYPE). Empty for custom outcomes.
Expiry datetime (e.g. 20260329-0500)
Target price for priceBinary outcomes
Period (e.g. 15m, 1d)
JSON array of side names (e.g. [{"name":"Yes"},{"name":"No"}])
Parent question ID (null if standalone)
Quote token index
Creation timestamp
Parent question name (empty if no question)
Parent question description
Total number of fills on this outcome
Total traded volume in USD (sum of px * sz)
Number of unique users who traded this outcome