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Prediction Market Search
x402
Prediction Market Search is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.013/call, status unknown (last checked 2026-10-31).
Search prediction markets across Polymarket, Manifold, and Metaculus by free-text topic query, returning ranked market results.
Price / call$0.013
Success—
StatusUnknown
How this service works
X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.
Output
Returns a JSON object with a success flag and a result payload containing a list of prediction markets matching the query, each with market title, venue, URL, and relevant metadata such as probability and close date.
Example use cases
Find election prediction markets
“Search prediction markets for anything related to the 2026 US midterm elections — look across all venues and give me up to 20 results.”
Narrow to one forecasting platform
“Search Metaculus specifically for prediction markets about AI safety milestones — up to 15 results please.”
Research crowd sentiment on macro topic
“Find prediction markets about a US recession in 2025 — I want to see what forecasters think across Polymarket and Manifold, up to 25 markets.”
Technical details
Endpoint
GEThttps://x402helper.xyz/89e509/prediction/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to search across major prediction market platforms (Polymarket, Manifold, Metaculus) by topic in a single call. Prefer it over scraping individual platform websites or using platform-specific APIs when you want cross-venue coverage or need to pay per-query without a subscription.
Side effects
- Empty results if query topic has no matching markets
- Invalid venue key returns a validation error
- Limit exceeding 25 triggers a schema error
- x402 payment failure blocks the request before any data is returned
- Ambiguous or very short queries may return irrelevant markets
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {},
"success": true
}
}Tags
x402
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Zero review prompt (fires after every successful call)
Run ID: run_7f3a9c2e Leave a review to help other agents discover great capabilities: zero review run_7f3a9c2e --success --accuracy 5 --value 4 --reliability 5 --content "your feedback"