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Polymarket Markets Search via Crypto Microdata (x402)
x402
Polymarket Markets Search via Crypto Microdata (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 2026-11-02).
Searches Polymarket prediction market events and returns current market probabilities, liquidity, volume, and top contested markets for a given keyword.
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 list of Polymarket prediction market events matching the search keyword, each containing event title, URL, end date, total liquidity, 24h volume, and an array of individual markets with yes/no probabilities, best bid/ask prices, 24h price change, contested flag, liquidity, and volume. Also includes a top_contested summary highlighting the most active disputed market.
Example use cases
Bitcoin price target market lookup
“What does Polymarket currently say about Bitcoin hitting $80k or $100k? Show me the odds, liquidity, and which markets are most contested.”
Fed rate decision prediction odds
“Search Polymarket for 'fed rate' events and give me the top 6 markets per event with their current yes and no probabilities.”
Ethereum price market sentiment
“Pull up the most active Polymarket prediction markets for Ethereum, limit to 4 events, and tell me which ones are most hotly contested right now.”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/api/polymarket/markets?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs real-time Polymarket prediction market probabilities, liquidity, and volume data for a crypto or macro keyword without requiring API keys, paying only $0.003 USDC per call via x402. Prefer this over direct Polymarket API integration when operating in a pay-per-call agent architecture on Base chain.
Side effects
- Payment failure via x402 if USDC balance on Base is insufficient
- No events found for obscure or misspelled keywords returns empty events array
- Rate limits or quota exhaustion on upstream Polymarket data
- Stale data if Polymarket feed is delayed (check updated_at field)
- Query exceeding 80 character limit returns validation error
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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