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Polymarket Prediction Market Intelligence (x402)
x402
Polymarket Prediction Market Intelligence (x402) is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).
Fetches live Polymarket prediction-market odds, implied probabilities, liquidity, and volume for any keyword query, paid per-call via x402 USDC micropayment on Base.
Price / call$0.003
Success—
StatusUnknown
How this service works
Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.
Output
Returns a JSON object with matching Polymarket events (title, URL, end date, total liquidity, 24h volume), each containing a list of markets with yes/no implied probabilities, best bid/ask, 24h volume, 1-day change, liquidity, and a contested flag. Also includes a top_contested field highlighting the highest-activity disputed market, plus source and update timestamp.
Example use cases
Bitcoin price target probability check
“Pull the latest Polymarket odds for 'bitcoin' — show me the top 6 events with up to 6 markets each, especially any contested ones with high 24h volume and their yes/no implied probabilities.”
Macro event market discovery
“Search Polymarket for 'fed rate' prediction markets, return up to 5 events with 4 markets each — I want to see liquidity, best bid/ask spreads, and the top contested question right now.”
Election outcome probability pricing
“Find me Polymarket prediction market odds for 'election', show 10 events with up to 8 markets each — I need implied probabilities and 1-day price changes to see where sentiment is shifting.”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/v1/prediction-market-intel?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need live implied-probability pricing from Polymarket prediction markets without managing API keys, and your agent can pay $0.003 USDC per call via x402 on Base. Ideal for trading agents that need crowd-sourced probability signals for crypto price targets, macro events, or election outcomes. Prefer over scraping Polymarket directly when you need clean structured JSON with bid/ask spreads and liquidity metrics in a single pay-per-call call.
Side effects
- Payment failure if agent wallet lacks sufficient USDC on Base — returns 402 Payment Required
- No events found for obscure or misspelled keyword — returns empty events array
- Rate limiting or worker timeout on high-traffic keywords — may return partial results
- Invalid query parameter types (e.g. limit > 20) — returns validation error
- Polymarket data source temporarily unavailable — stale or missing updated_at timestamp
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"q": "bitcoin",
"events": [
{
"url": "https://polymarket.com/event/bitcoin-above-on-october-30",
"title": "Bitcoin above ___ on October 30?",
"markets": [
{
"no_prob": 0.38,
"best_ask": 0.63,
"best_bid": 0.61,
"question": "Will the price of Bitcoin be above $80,000 on October 30?",
"yes_prob": 0.62,
"change_1d": 0.05,
"contested": true,
"liquidity": 50000,
"volume_24h": 41000,
"outcome_label": "80,000"
}
],
"end_date": "2026-10-30T16:00:00Z",
"liquidity": 610000,
"volume_24h": 281751.88
}
],
"source": "polymarket",
"n_events": 1,
"updated_at": "2026-10-29T15:30:00Z",
"top_contested": {
"event": "Bitcoin above ___ on October 30?",
"question": "Will the price of Bitcoin be above $80,000 on October 30?",
"yes_prob": 0.62,
"volume_24h": 41000
}
}
}Tags
x402
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