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March 28, 2026
New

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New Endpoints: Opinion, Limitless, Predict.Fun Markets

Opinion

List Opinion markets with filtering, sorting, and event grouping.

Limitless

List Limitless markets with filtering, sorting, and trade type filter.

Predict.Fun

List Predict.Fun markets with filtering, sorting, and event grouping.
All three support status filtering, text search, cursor pagination, and platform-specific filters.
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March 23, 2026
Improvement

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Smart Activity: Market Status Filter

GET /v2/polymarket/markets/smart-activity now supports an optional status query parameter.
ValueDescription
openCurrently tradable markets only
closedResolved/settled markets only
(omitted)All markets (default)
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March 15, 2026
New

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New Endpoints: Cross-Platform Orderbooks

Limitless

Historical orderbook snapshots for Limitless.

Opinion

Historical orderbook snapshots for Opinion.

Predict.Fun

Historical orderbook snapshots for Predict.Fun.
All return YES-side orderbook data with cursor pagination. Timestamps in milliseconds.
Kalshi data gap: Orderbook data unavailable between March 12 08:00 UTC and March 14 18:10 UTC due to an upstream API format change.
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March 7, 2026
New

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WebSocket: Pending Trades Channel

New Channel: pending-trades

Detect trade events from the Polygon mempool 3–5 seconds before on-chain confirmation.