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GET
/
v1
/
contract-ratio
/
{symbol}
Per-contract bid/ask/mid distribution
curl --request GET \
  --url https://flow-api.skylit.ai/v1/contract-ratio/{symbol} \
  --header 'Authorization: Bearer <token>'
{
  "data": {
    "symbol": "SPY 250516C00580000",
    "ticker": "<string>",
    "date": "2023-12-25",
    "timeframe": "<string>",
    "tradeCount": 1,
    "totalVolume": 1,
    "totalPremium": 123,
    "contractRatios": {
      "askRatio": 123,
      "bidRatio": 123,
      "midRatio": 123,
      "aggressionRatio": 123
    },
    "interpretation": {
      "description": "<string>"
    }
  },
  "meta": {
    "timestamp": "2023-11-07T05:31:56Z",
    "requestId": "d7574836"
  }
}

Authorizations

​
Authorization
string
header
required

Skylit API key in the Authorization header (Authorization: Bearer fs_live_<key>). X-API-Key is also accepted.

Path Parameters

​
symbol
string
required

OPRA option symbol in URL-safe form: {ticker}__{YYMMDD}{C|P}{strike×1000, 8 digits} — the ticker and the 15-character contract block are joined by a double underscore (__). For example, an AAPL $250 call expiring 2026-01-17 is AAPL__260117C00250000. (A space-padded 21-char OCC form such as AAPL 260117C00250000 is also accepted on some endpoints, but the __ form is canonical and works across all contract routes.)

Example:

"SPY__250516C00580000"

Query Parameters

​
date
string<date>
​
timeframe
enum<string>
default:1d
Available options:
5m,
15m,
1h,
4h,
1d
​
minPremium
integer
Required range: x >= 0

Response

Contract ratio analysis with interpretation.

​
data
object
required
​
meta
object
required