Prediction Market Search API • Live on Bitcoin mainnet

Search live prediction markets in one call.

Search open Polymarket markets and return normalized event titles, probabilities, volume, close times, and URLs. Built for agents, market monitoring, research workflows, and event-driven automation.

4 sats / call

POST /api/prediction-market-search

Open markets only

What It Does

ArkAPI prediction market search queries Polymarket and normalizes the response into a clean JSON shape that agents can work with. You get event context, market titles, probability, volume, close time, and a market URL without needing to wire up the upstream source directly.

Searches open markets only
Returns normalized event, probability, and volume data
Useful for market, news, macro, and event workflows
Simple JSON request and response shape

Result Shape

Each result is designed to be easy for agents and scripts to rank, filter, and display. ArkAPI returns a compact structure with the key fields that matter most for downstream workflows.

market_id and event_id for stable references
title and event_title for user-facing context
probability and volume_usd for ranking and analysis
close_time and url for navigation and timing

Example Request

curl -X POST https://arkapi.dev/api/prediction-market-search \
  -H "Authorization: Bearer ak_your_token" \
  -H "Content-Type: application/json" \
  -d '{"query":"bitcoin","limit":3}' | jq

Example Response

{
  "success": true,
  "data": {
    "query": "bitcoin",
    "platform": "Polymarket",
    "results": [
      {
        "market_id": "1662879",
        "event_id": "286715",
        "title": "Will the price of Bitcoin be above $68,000 on March 27?",
        "event_title": "Bitcoin above ___ on March 27?",
        "platform": "Polymarket",
        "status": "open",
        "probability": 0.979,
        "volume_usd": 163398.20,
        "close_time": "2026-03-27T16:00:00Z",
        "url": "https://polymarket.com/event/bitcoin-above-on-march-27"
      }
    ]
  },
  "cost_sats": 4,
  "endpoint": "/api/prediction-market-search"
}

Good Queries

bitcoin
bitcoin etf
federal reserve
fed rates
elections

For broader platform usage, see the main docs and the live catalog.