Smart Money Flows - 0xinsider API

cURL

curl -sS \
  -H 'Authorization: Bearer $OXI_SK' \
  'https://api.0xinsider.com/api/v1/markets/smart-money-flows?timeframe=7d&min_grade=B&limit=10'

{
  "object": "list",
  "data": [
    {
      "market": {
        "id": "mkt_0x123",
        "condition_id": "0x123",
        "title": "Will BTC close above $100k this week?",
        "slug": "btc-close-above-100k-this-week",
        "category": "Crypto",
        "platform": "polymarket"
      },
      "smart_money": {
        "net_flow_usd": 12345.67,
        "direction": "YES",
        "whale_trade_count": 7,
        "buy_volume_usd": 20000,
        "sell_volume_usd": 7654.33
      },
      "timeframe": "24h"
    }
  ],
  "has_more": false,
  "next_cursor": null,
  "meta": {
    "request_id": "req_example",
    "cached": false
  }
}

GET

api

markets

smart-money-flows

cURL

curl -sS \
  -H 'Authorization: Bearer $OXI_SK' \
  'https://api.0xinsider.com/api/v1/markets/smart-money-flows?timeframe=7d&min_grade=B&limit=10'

{
  "object": "list",
  "data": [
    {
      "market": {
        "id": "mkt_0x123",
        "condition_id": "0x123",
        "title": "Will BTC close above $100k this week?",
        "slug": "btc-close-above-100k-this-week",
        "category": "Crypto",
        "platform": "polymarket"
      },
      "smart_money": {
        "net_flow_usd": 12345.67,
        "direction": "YES",
        "whale_trade_count": 7,
        "buy_volume_usd": 20000,
        "sell_volume_usd": 7654.33
      },
      "timeframe": "24h"
    }
  ],
  "has_more": false,
  "next_cursor": null,
  "meta": {
    "request_id": "req_example",
    "cached": false
  }
}

Rank markets by where graded traders are putting money. This is the “where is smart money flowing right now?” feed: it aggregates whale flow from S, A, and B grade traders and ranks markets by absolute net flow over your chosen window. Use it for discovery, before you know a condition_id. Once you have a market, follow up with Get Market Intel for the single-market breakdown. Common filters:

timeframe=24h — lookback window (1h, 4h, 24h, or 7d).
min_grade=B — minimum trader grade in the flow. The default B means S, A, and B graded traders only.
platform=polymarket or platform=kalshi.
direction=YES or direction=NO — restrict to one side of the flow.
category=crypto — case-insensitive exact match against the provider-backed market category.

curl -H "Authorization: Bearer $OXINSIDER_API_KEY" \
  "https://api.0xinsider.com/api/v1/markets/smart-money-flows?timeframe=7d&min_grade=B&limit=10"

Cursor-paginated. The cursor is anchored to the first page’s as_of timestamp, so new whale trades do not reorder later pages. See Pagination.

Authorizations

Authorization

string

header

required

API key: Authorization: Bearer oxi_sk_live_...

Headers

If-None-Match

string

Conditional GET validator from a previous ETag. Matching values return 304 Not Modified with an empty body.

Query Parameters

timeframe

enum<string>

default:24h

Lookback window for grade-filtered whale flow aggregation.

Available options:

1h,

4h,

24h,

7d

limit

integer

default:20

Page size.

Required range: 1 <= x <= 100

cursor

string

Opaque cursor from previous response's next_cursor. Encodes the first-page as_of timestamp plus the last row's absolute net flow and condition_id.

Response

Ranked market smart-money flows

object

string

required

Allowed value: "list"

data

object[]

required

Show child attributes

has_more

boolean

required