Polymarket & Kalshi Prediction Market Data, No Login
Pricing
from $3.00 / 1,000 market rows
Polymarket and Kalshi prediction markets in one table: question, outcome prices as implied probabilities, volume, liquidity, open interest, close time, status and URL, with optional price history. Search, filter or look up by ID or URL. No login or API key.
recordType
Required
market for market rows; lookup-status for an identifier that was not found, invalid or failed (one row per identifier).
platform
Optional
polymarket or kalshi; null on lookup-status rows for identifiers that match neither platform.
marketId
Optional
Polymarket market ID or Kalshi market ticker. Lookup-status rows: the identifier exactly as you entered it.
marketSlug
Optional
Polymarket market slug (null on Kalshi).
conditionId
Optional
Polymarket condition ID (0x…); null on Kalshi.
eventId
Optional
Parent event: Polymarket event ID or Kalshi event ticker.
eventTitle
Optional
Title of the parent event, e.g. Fed decision in Oct 2026?
seriesTicker
Optional
Kalshi series ticker (null on Polymarket).
question
Optional
Market question as shown by the platform.
outcomeLabel
Optional
Short label of this market inside a multi-outcome event, e.g. a candidate name or a range.
category
Optional
Category: Kalshi event category or the main Polymarket tag.
outcomes
Optional
Outcomes with name, price (USD per $1 payout, 0–1) and probability (the same price read as an implied probability).
lastTradePrice
Optional
Last traded price of the first outcome (Yes), 0–1.
bestBid
Optional
Best bid for Yes, 0–1.
bestAsk
Optional
Best ask for Yes, 0–1.
volume
Optional
Lifetime traded volume; unit in volumeUnit.
volume24h
Optional
Volume over the last 24 hours; unit in volumeUnit.
liquidity
Optional
Order book liquidity in USD (Polymarket; Kalshi does not publish it, so null).
openInterest
Optional
Open interest: USD on Polymarket, contracts on Kalshi.
volumeUnit
Optional
USD (Polymarket) or contracts (Kalshi, $1 payout each).
openTime
Optional
When trading opened (ISO 8601).
closeTime
Optional
Scheduled or actual close time (ISO 8601).
status
Required
Market rows: open, closed or resolved. Lookup-status rows: not_found, invalid or error.
sourceStatus
Optional
Raw status from the platform, e.g. active, finalized.
resolvedOutcome
Optional
Winning outcome for resolved markets, otherwise null.
rules
Optional
Resolution rules as published by the platform (Polymarket market description; Kalshi primary and secondary rules), trimmed to 2,000 characters.
url
Optional
Market page on polymarket.com or kalshi.com.
priceHistoryStatus
Optional
not_requested, complete, empty, unavailable or error.
priceHistory
Optional
List of {timestamp, price} for the Yes price; null unless requested.
statusReason
Optional
Lookup-status rows: why the IDs were not returned.
errorCode
Optional
Lookup-status rows: INVALID_IDENTIFIER or a source error code.
source
Optional
Which public API the row came from.
sourceApiUrl
Optional
API request that produced the row.
fetchedAt
Required
When the row was fetched (ISO 8601).
