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Polymarket Prediction Market Signal
x402
Polymarket Prediction Market Signal is a paid API for AI agents from enclave402.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-18).
Fetches live Polymarket crowd-implied probabilities, bid/ask spreads, 24h volume, liquidity, and momentum labels for one specific market or the top markets by volume.
Price / call$0.01
Success—
StatusUnknown
How this service works
Enclave402: x402 pay-per-call gateway on Base. Live Polymarket signals, IPFS pinning, EIP-712 attestations. Receipt-gated settlement, replay protection, no charge on failure.
Output
Returns a JSON payload with one or more market objects, each containing the market question, outcome prices (implied probabilities), best bid, best ask, spread, 24h price change, a deterministic momentum label (e.g. FLAT, UP, DOWN), 24h volume, liquidity depth, and response timestamps. When no slug is provided, returns the top markets ranked by 24h volume up to the requested limit.
Example use cases
Real-time election outcome probability
“What does Polymarket currently think are the odds of the Republican candidate winning the 2026 Senate race in Arizona? Pull the signal for that market and tell me the implied probability, the spread, and whether pricing has been moving up or down in the last 24 hours.”
Top prediction markets dashboard
“Show me the top 3 most-traded Polymarket markets right now — I want the crowd probability, 24h volume, and momentum label for each so I can see where attention is focused.”
Macro event probability for trading decision
“What is Polymarket's current implied probability for a US recession being declared before the end of 2025? Get the live signal including best bid, best ask, and 24h price change so I can factor it into my positioning.”
Technical details
Endpoint
GEThttps://enclave402.com/api/market/signalWhen to prefer
Choose this endpoint when an agent needs the real-time crowd-implied probability of a specific real-world event (political, macroeconomic, sports, etc.) from Polymarket, or wants a ranked list of the most actively traded prediction markets. It is the right choice for event probability lookup, momentum analysis, and liquidity assessment. Do NOT use it for spot cryptocurrency prices, DEX swap quotes, or order execution — it is strictly read-only prediction market data.
Side effects
- Invalid or non-existent slug returns an error or empty markets array
- Limit out of range (below 1 or above 10) causes a validation error
- Upstream Polymarket Gamma/CLOB APIs unavailable causes a fetch failure; no charge is applied on failure
- Market has ended or been resolved — data may be stale or absent
- Rate limiting or x402 payment settlement failure may prevent response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ts": 1767225600000,
"asOf": "2026-01-01T00:00:00.000Z",
"query": {
"top": 1,
"orderBy": "volume24hr"
},
"source": "polymarket-gamma",
"markets": [
{
"id": "0",
"slug": "sample-market",
"spread": 0.02,
"bestAsk": 0.51,
"bestBid": 0.49,
"endDate": null,
"momentum": "FLAT",
"outcomes": [
"Yes",
"No"
],
"question": "Sample question?",
"liquidity": 0,
"volume24hr": 0,
"conditionId": null,
"outcomePrices": [
0.5,
0.5
],
"oneDayPriceChange": 0,
"impliedProbability": 0.5
}
],
"settled": true
}
}Tags
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