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Quotient Market Catalog
x402
Quotient Market Catalog is a paid API for AI agents from quotient-api-gateway.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Browse all prediction markets tracked by Quotient across Polymarket, Kalshi, and Limitless with live odds, volume, resolution dates, and forecast recency.
Price / call$0.005
Success—
StatusUnknown
How this service works
Use this to browse every prediction market Quotient tracks across Polymarket International, Polymarket US, Kalshi, and Limitless, with venue odds and quote provenance, available volume, resolution date, and forecast recency. Polymarket International and Kalshi fail closed when live pricing is unavailable; other venues label graph snapshots stale. Filter by venue or topic; the complete covered catalog returns in one response.
Output
A full catalog of prediction markets tracked by Quotient, each including the market name, venue (Polymarket, Kalshi, or Limitless), current live odds, 24-hour trading volume, resolution date, and how recently Quotient last re-forecast that market. Returned in one response, filterable by topic and venue, sortable by volume, update recency, or signal count.
Example use cases
Discover high-volume geopolitics markets
“Pull up all the geopolitics prediction markets across Polymarket and Kalshi sorted by 24-hour volume so I can see where the most trading action is.”
Find recently updated macro markets
“Show me all the macro and central-bank-policy markets Quotient tracks that have changed in the last 24 hours, sorted by most recently updated.”
Browse conflict markets before reading forecasts
“List all the conflict-related prediction markets Quotient follows across every venue — I want to see what's available before I pull the actual forecasts and signals.”
Technical details
Endpoint
GEThttps://quotient-api-gateway.onrender.com/api/v1/marketsWhen to prefer
Use this endpoint first when you need to discover what prediction markets exist across Polymarket, Kalshi, and Limitless before fetching detailed forecasts or trade signals. It is the catalog/browse layer — ideal for exploration, building market lists, or identifying which markets exist on a topic. Prefer this over the semantic search endpoint when you want a broad, filterable catalog rather than meaning-based retrieval, and over the forecast endpoint when you don't yet have specific market IDs.
Side effects
- Invalid venue enum value returns 400 validation error
- changed_within value outside 1-168 range returns 400 error
- No markets match the given topic filter — returns empty list
- Render.com cold start delay on first request may cause latency spike or timeout
- Network error if the hosted service is unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Tags
x402
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