Coverage & data conventions.

Coverage by feature#

Trader rankings & wallet analyticsPolymarket

Global leaderboard, profiles, positions, trades and reported wallet history.

Cohorts & fundingPolymarket

Grouped wallet positioning and observed funding sources; records depend on the available dataset.

Market discoveryVenue-specific

Polymarket, Kalshi and Hyperliquid use separate endpoint families and may expose different units and fields.

Matched marketsPolymarket ↔ Kalshi

Matched contracts and confidence scores. A match does not guarantee equivalent settlement terms.

StreamingSeparate service

Supported SSE channels and access are documented in the streaming guide.

Keep units visible#

• The global leaderboard winRate is 0–1; profile winRatePct is already a percentage.
• P&L and portfolio values are USD unless the endpoint specifies otherwise. Kalshi volumes may represent contracts.
• A price change from 0.60 to 0.65 is five percentage points, not a five-percent relative return.
• Keep null distinct from zero. Do not fill a missing time-series observation with an invented data point.

A response is not always the whole record#

Show snapshot timestamps and the returned historical window. Paginate positions and trades before presenting totals as complete. Advanced metrics can describe an older or different period from the overall leaderboard P&L; its latest snapshot timestamp does not establish freshness for every field. Risk measures depend on the available P&L history and are not cash-flow-adjusted returns.