List Markets

List prediction markets across all platforms with optional filtering by platform, status, tags, volume, and text search. Results sorted by 24h volume descending.

GET /v1/markets

List Markets

cURL

curl --request GET \
  --url https://api.arbiterapi.com/v1/markets \
  --header 'X-API-Key: <api-key>'

200

[
  {
    "id": "<string>",
    "slug": "<string>",
    "question": "<string>",
    "status": "open",
    "outcomes": [
      {
        "label": "<string>",
        "price": 123,
        "price_cents": 123
      }
    ],
    "platforms": [
      {
        "platform": "polymarket",
        "native_id": "<string>",
        "url": "<string>",
        "best_bid": 123,
        "best_ask": 123,
        "volume_24h": 123
      }
    ],
    "description": "<string>",
    "volume_24h": 0,
    "volume_total": 123,
    "open_interest": 123,
    "created_at": 123,
    "close_time": 123,
    "tags": [],
    "category": "<string>",
    "event_slug": "<string>"
  }
]

Authorizations

X-API-Key · string · header · required

Query Parameters

platform · enum<string> | null

Available options: polymarket, kalshi

status · enum<string> | null

Available options: open, closed, resolved

tag · string | null

min_volume · number | null

q · string | null

Search query

limit · integer · default: 50

Required range: 1 <= x <= 200

offset · integer · default: 0

Required range: x >= 0

Response

200

application/json

Successful Response

id · string · required

slug · string · required

question · string · required

status · enum<string> · required

Available options: open, closed, resolved

outcomes · Outcome · object[] · required

Show child attributes

platforms · PlatformListing · object[] · required

Show child attributes

description · string | null

volume_24h · number · default: 0

volume_total · number | null

open_interest · number | null

created_at · integer | null

close_time · integer | null

tags · string[]

category · string | null

event_slug · string | null