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GET
Trending prediction markets (top by 24h volume)
2 credits per request

  • The markets seeing the most action right now, ranked by 24-hour traded volume.
  • Filter by source (venue) and cap the count with limit.
  • Choose the venues with view: intl (default) Polymarket and Kalshi, us Polymarket US and Kalshi, all every venue.
  • Ideal for a homepage or “trending” feed without specifying sort/filter parameters yourself.

Authorizations

X-API-KEY
string
header
required

API key required to access the endpoints. Generate one from your dashboard at https://openapi.coinstats.app and pass it in the X-API-KEY request header. Never expose your key in client-side code.

Query Parameters

limit
number
default:20
Required range: x <= 50
Example:

20

source
enum<string>

One venue only: polymarket (Polymarket, polymarket.com), kalshi (Kalshi) or polymarket-us (Polymarket US, polymarket.us). Without it, the venues of view.

Available options:
polymarket,
kalshi,
polymarket-us
view
enum<string>
default:intl

Which venues are listed when source names none: intl (default) Polymarket and Kalshi, as before Polymarket US was added; us Polymarket US and Kalshi; all every venue. Markets are not deduplicated across Polymarket's two exchanges: in all a question both list can appear twice, once per exchange (source tells them apart). Ignored when source is set. Polymarket US publishes no 24h volume (volume24hr is 0): sort its rows by volume.

Available options:
intl,
us,
all

Response

success
boolean
required

Whether the request succeeded

Example:

true

timestamp
string
required

ISO 8601 timestamp the response was generated

Example:

"2025-06-19T12:00:00.000Z"

data
object[]
required