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Quotient Sources API – News & X/Twitter Evidence for Prediction Markets
x402
Quotient Sources API – News & X/Twitter Evidence for Prediction Markets 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 2026-09-13).
Returns the news articles and X/Twitter posts driving Quotient's prediction-market forecasts, with relevance scores, reasoning, evidence quotes, source tier, and author for up to ten markets.
Price / call$0.005
Success—
StatusUnknown
How this service works
The news and X/Twitter evidence behind Quotient forecasts on Polymarket International, Polymarket US, Kalshi, and Limitless: recent articles and relevant posts for up to ten markets, with reasoning, evidence quotes, source tiers, authors, and canonical routing. Prefer market_keys for cross-venue or nullable-slug rows. Use this to audit a forecast or see what is moving event and asset-linked markets.
Output
A list of up to ten markets, each with a time-ordered feed of news articles and X/Twitter posts. Each item includes: relevance score (0–1), reasoning explaining why the item is relevant, a direct evidence quote, source tier (e.g. tier-1 outlet, financial media, social), and author. Results are ordered by publication date and filtered to the requested time window.
Example use cases
Auditing an election market forecast
“Show me all the news and tweets behind Quotient's forecast for the 2024 US Senate Georgia race on Polymarket — I want to see relevance scores and the actual evidence quotes so I can check if the forecast makes sense.”
Building a geopolitics prediction news feed
“Fetch the top news and X posts for these five Kalshi geopolitics markets from the last 72 hours, sorted by publication time, so I can see what events are actually moving the odds.”
Verifying a macro policy market signal
“What recent articles and Twitter posts are behind the odds on the Fed rate cut markets on Polymarket right now? Give me the source tier and reasoning for each piece so I can decide whether to trust the signal.”
Technical details
Endpoint
GEThttps://quotient-api-gateway.onrender.com/api/v1/sourcesWhen to prefer
Use this endpoint when you need to understand the evidence and information flow behind a specific prediction market's probability — for auditing forecasts, building evidence-backed news feeds, or investigating what news or social media is actually moving odds. Prefer this over the general markets endpoint when your goal is source-level transparency rather than just the probability or signal itself.
Side effects
- Invalid or unrecognized market_keys returns empty or partial results
- Unsupported venue enum value returns a validation error
- Window value outside 1–168 hours returns a schema validation error
- Markets with no recent coverage return an empty sources array
- Render cold-start latency may cause occasional slow first response
- Exceeding ten markets in one call may return truncated or error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Tags
x402
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