$0.02
per call · USD Coin on Base
Find prediction markets by free-text query; returns slugs for other endpoints — Full-text search over the canonical market catalog (Postgres FTS + trigram in live mode). Returns slugs, blended probabilities, and match confidence. Empty result sets return 200 with a suggestion listing valid categories.
Endpoint
GET https://x402-factory.com/v1/probability/search2
Calls / 30d
1
Unique payers / 30d
Sep 1
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://x402-factory.com/v1/probability/search", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://x402-factory.com/v1/probability/search?q=fed+september+rate+cut" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"data": {
"results": [
{
"category": "economics",
"match_confidence": 1,
"probability": 0.7301,
"question": "Will the Fed cut rates at the September 2026 FOMC meeting?",
"resolution_date": "2026-09-16",
"slug": "fed-rate-cut-2026-09"
},
{
"category": "economics",
"match_confidence": 0.75,
"probability": 0,
"question": "Did the Fed cut rates at the June 2026 FOMC meeting?",
"resolution_date": "2026-06-17",
"slug": "fed-rate-cut-2026-06"
},
{
"category": "economics",
"match_confidence": 0.75,
"probability": 0.5547,
"question": "Will the ECB cut rates at its September meeting?",
"resolution_date": "2026-09-10",
"slug": "ecb-rate-cut-2026-09"
},
{
"category": "economics",
"match_confidence": 0.63,
"probability": 0.0488,
"question": "Will the Fed raise rates at the September 2026 FOMC meeting?",
"resolution_date": "2026-09-16",
"slug": "fed-hike-september-2026"
},
{
"category": "economics",
"match_confidence": 0.5,
"probability": 0.5666,
"question": "Will the September 2026 FOMC dot plot shift its median rate path?",
"resolution_date": "2026-09-16",
"slug": "fomc-dot-plot-median-shift-2026-09"
}
]
},
"meta": {
"data_mode": "live",
"docs": "https://x402-factory.com/docs/probability.search",
"endpoint": "/v1/probability/search",
"freshness": "realtime",
"generated_at": "2026-09-01T09:36:55.200Z",
"request_id": "req_00000000",
"sources": [
"kalshi",
"polymarket"
],
"version": "1.0.0"
}
}Payment details
0xcc42ed39a06b6cf3f484307ef76b88bf56fb305fUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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