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Financial Data x402 – Prediction Market Prices
x402
Financial Data x402 – Prediction Market Prices is a paid API for AI agents from x402-stock-indicators.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-12).
Fetches live prediction market data for a specific market by source and market ID, including outcome probabilities, trading volume, and close date.
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.
Output
Returns a JSON object with the market ID, title, source, status (e.g. active), a list of outcomes with names and probabilities (e.g. Yes: 0.615, No: 0.385), the close date, total volume in USD, and 24-hour volume in USD.
Example use cases
Macro event probability tracker
“What does Polymarket currently say about the odds of a Fed rate hike in 2026? I want the yes/no probabilities and total trading volume — use market ID 'fed-rate-hike-in-2026' from polymarket.”
Active market status check
“Check if the Polymarket market for 'fed-rate-hike-in-2026' is still active and tell me when it closes, what the current odds are, and how much has traded in the last 24 hours.”
Prediction market research for newsletter
“I'm writing about macro forecasting — pull the current outcome probabilities and volume for the Polymarket market ID 'fed-rate-hike-in-2026' so I can cite the crowd's implied odds.”
Technical details
Endpoint
GEThttps://x402-stock-indicators.vercel.app/prediction-market/%7Bsource%7D/%7Bmarket_id%7DWhen to prefer
Choose this endpoint when you need real-time crowd-implied probabilities for a specific economic, political, or macro event from a prediction market like Polymarket. It is ideal for agents embedding market-derived probabilities into reports, dashboards, or decision logic. Prefer it over manual Polymarket browsing when you need structured JSON output. It complements macro data endpoints (e.g. FOMC calendar, jobless claims) by adding market-implied probability context.
Side effects
- Invalid or unknown market_id returns an error or empty result
- Unsupported source value yields a 404 or error response
- Market may be resolved/closed and return a non-active status
- Payment failure over x402 protocol blocks the request
- Rate or network issues on Vercel edge may cause transient 5xx errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "fed-rate-hike-in-2026",
"title": "Fed rate hike in 2026?",
"source": "polymarket",
"status": "active",
"outcomes": [
{
"name": "Yes",
"probability": 0.615
},
{
"name": "No",
"probability": 0.385
}
],
"close_date": "2026-12-09T00:00:00Z",
"volume_usd": 5645666.92,
"volume_24h_usd": 624904.36
}
}Tags
x402
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