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GET /v1/market

A single market with all contracts and odds

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/predictit-api

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Code snippets

curl "https://api.oanor.com/predictit-api/v1/market" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/predictit-api/v1/market", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/predictit-api/v1/market");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/predictit-api/v1/market",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "id": 7589,
        "url": "https://www.predictit.org/markets/detail/7589/How-many-House-seats-will-Republicans-win-in-the-2026-midterm-election",
        "name": "How many House seats will Republicans win in the 2026 midterm election?",
        "note": "Prices are US dollars 0.00-1.00; a contract priced at 0.27 implies a 27% probability.",
        "source": "PredictIt",
        "status": "Open",
        "contracts": [
            {
                "id": 28361,
                "name": "192 or fewer",
                "buy_no": 0.74,
                "status": "Open",
                "buy_yes": 0.27,
                "sell_no": 0.73,
                "end_date": null,
                "sell_yes": 0.26,
                "last_close": 0.26,
                "last_trade": 0.26,
                "implied_probability_pct": 26
            },
            {
                "id": 28362,
                "name": "193 to 197",
                "buy_no": 0.91,
                "status": "Open",
                "buy_yes": 0.1,
                "sell_no": 0.9,
                "end_date": null,
                "sell_yes": 0.09,
                "last_close": 0.11,
                "last_trade": 0.11,
                "implied_probability_pct": 11
            },
            {
                "id": 28369,
                "name": "198 to 202",
                "buy_no": 0.9,
                "status": "Open",
                "buy_yes": 0.11,
                "sell_no": 0.89,
                "end_date": null,
                "sell_yes": 0.1,
                "last_close": 0.1,
                "last_trade": 0.1,
                "implied_probability_pct": 10
            },
            {
                "id": 28367,
                "name": "203 to 207",
                "buy_no": 0.88,
                "status": "Open",
                "buy_yes": 0.13,
                "sell_no": 0.87,
                "end_date": null,
                "sell_yes": 0.12,
                "last_close": 0.12,
                "last_trade": 0.12,
                "implied_probability_pct": 12
            },
            {
                "id": 28366,
                "name": "208 to 212",
                "buy_no": 0.89,
                "status": "Open",
                "buy_yes": 0.12,
                "sell_no": 0.88,
                "end_date": null,
                "sell_yes": 0.11,
                "last_close": 0.11,
                "last_trade": 0.11,
                "implied_probability_pct": 11
            },
            {
                "id": 28370,
                "name": "213 to 217",
                "buy_no": 0.89,
                "status": "Open",
                "buy_yes": 0.12,
                "sell_no": 0.88,
                "end_date": null,
                "sell_yes": 0.11,
                "last_close": 0.11,
                "last_trade": 0.11,
                "implied_probability_pct": 11
            },
            {
                "id": 28368,
                "name": "218 t
…