api.x-402.online
Open prediction markets from Polymarket and Kalshi in one call: question, outcome probabilities, 24 h volume, liquidity, closing time and link, sorted by volume, with an optional keyword filter. Query: ?q=election&limit=10&sources=polymarke
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 119 ms
- Price
- $0.005 per call
- Paying buyers, last 30 days
- 3 (directory's own records)
- Paid calls, last 30 days
- 4
- Category
- Forecasts, signals and predictions
- Address
- https://api.x-402.online/v1/markets/prediction
Accuracy: paid answers checked against an independent record
Not yet in our paid checks. A seller we have not checked has neither passed nor failed.
For agents
This page as JSON: /sellers/aa9ff5d7093a.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).