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Api Endpoint

PM Markets Feed

Top Polymarket prediction markets RIGHT NOW: the 25 highest-volume open markets with live odds (outcome probabilities), best bid/ask, spread, last trade price, 24h + total volume, liquidity, 1d/7d price change, end date and event link. Flat JSON, refreshed every 5 minutes. Prediction market odds, Polymarket data, event probabilities, market sentiment. $0.001 per call.

Open interactive test console

Offering

Provider
x402.ottoai.services
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Prediction Markets
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://x402.ottoai.services/pm-markets
MIME type
application/json
First seen
2026-10-16T01:50:10.647Z
Last seen
Tags
Prediction Markets, polymarket, odds, event probability, market data

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.001 USDC
Atomic price: 1000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "1000",
    "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5"
  }
]

Observed health

Status
Healthy
Latest latency
137 ms
Average latency
480 ms
HTTP status
402
Last checked
Reachability
100% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {}
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "json",
  "example": {
    "data": {
      "venue": "polymarket",
      "markets": [
        {
          "url": "https://polymarket.com/event/fed-decision-in-july-181",
          "slug": "will-the-fed-cut-rates-in-july",
          "spread": 0.01,
          "bestAsk": 0.89,
          "bestBid": 0.88,
          "endDate": "2026-07-29T00:00:00Z",
          "marketId": "516710",
          "outcomes": [
            {
              "outcome": "Yes",
              "probability": 0.885
            },
            {
              "outcome": "No",
              "probability": 0.115
            }
          ],
          "question": "Will the Fed cut rates in July?",
          "eventTitle": "Fed Decision in July?",
          "conditionId": "0x86f5b0f1934bb39421651ad2ba0f04494700ba9e95663a5c141a8674c4978c15",
          "liquidityUsd": 3395614.54,
          "volume24hUsd": 4821055.2,
          "lastTradePrice": 0.885,
          "volumeTotalUsd": 48348772.09,
          "oneDayPriceChange": 0.015,
          "oneWeekPriceChange": 0.0725
        }
      ],
      "generatedAt": "2026-07-10T12:00:00.000Z",
      "marketCount": 25,
      "totalVolume24hUsd": 92401882.4
    },
    "meta": {
      "degraded": false,
      "validUntil": "",
      "generatedAt": "",
      "stalenessSec": 0
    },
    "status": "success"
  }
}