Prediction Markets Scraper - Polymarket & Kalshi Odds

Get live prediction market odds from Polymarket and Kalshi in one table: event, question and outcome, probability, bid and ask, last price, daily change, volume, liquidity, open interest, end date, category and link.

Why this one

• Both platforms, one format. Compare Polymarket and Kalshi on the same question.
• Keyword search across both. Kalshi has no search of its own; keywords are matched to its market series for you.
• Probabilities as numbers from 0 to 1.
• Uses the platforms' official public APIs. No login, no browser.
• You only pay for markets. Failed searches are listed in RUN_SUMMARY and cost nothing.

Input

Field	Example
Searches	bitcoin, fed rate, *
Platforms	Polymarket, Kalshi
Minimum volume	10000

Every field is optional except Searches.

Output

One row per market. Example:

{
    "source": "polymarket",
    "id": "polymarket:6507370",
    "platform": "Polymarket",
    "event": "What price will Bitcoin hit in November?",
    "question": "Will Bitcoin reach $100,000 in November?",
    "outcome": "↑ 100,000",
    "probability": 0.021,
    "outcomes": {
        "Yes": 0.021,
        "No": 0.979
    },
    "bestBid": 0.02,
    "bestAsk": 0.022,
    "lastPrice": 0.025,
    "change1d": -0.0065,
    "change1w": null,
    "volume": 46581.976869000006,
    "volume24h": 28795.297497000007,
    "liquidity": 86655.81574,
    "openInterest": null,
    "endDate": "2026-12-01T05:00:00Z",
    "category": "Bitcoin",
    "tags": [
        "Bitcoin",
        "Monthly",
        "Hit Price",
        "Crypto",
        "Crypto Prices",
        "Recurring"
    ],
    "ticker": "will-bitcoin-reach-100k-in-november-2026",
    "url": "https://polymarket.com/event/what-price-will-bitcoin-hit-in-november-2026",
    "searchQuery": "bitcoin"
}

Each row also has searchQuery: the search that found it. A summary of the run (markets per search, the site's total for each search, and any searches that failed) is saved as RUN_SUMMARY in the key-value store.

Export to JSON, CSV, Excel or HTML from the Output tab, or use the API.

Use cases

• Forecasting and research: market-implied probabilities for elections, rates, crypto and sports.
• Dashboards and alerts on odds changes.
• Cross-platform comparison of the same events.

Pricing

Pay per market. See the Pricing tab. Searches that fail are free.

Good to know

• Kalshi markets are found by matching your keywords to Kalshi series titles and categories (up to 40 series per keyword).
• Volume is in dollars on Polymarket and in contracts on Kalshi.
• Data is read-only market data; this Actor does not trade.
• This Actor reads public market data only. It does not log in, trade, or collect personal data.

Feedback

Missing a field or a filter? Open an issue on the Issues tab.

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