Call activity

GET /calls

GetCalls

Returns long and short call counts over time for one resolved asset. Omit both asset_id and asset_class for the all-market global view; asset_class cannot be used alone. Asset selectors support equities, commodities, indices, and crypto assets returned by GET /assets; commodity and index IDs use asset_class=equity. Parameter rules: asset_class requires asset_id. asset_id requires asset_class.

Parameters

asset_id string QUERY

Canonical identifier returned by /assets. Stock, commodity, and index IDs are normally ticker or market symbols and use asset_class=equity; crypto IDs are canonical crypto slugs. asset_class is mandatory whenever asset_id is present.

Example:NVDA

asset_class string QUERY

Namespace of asset_id, or the market class for endpoints with a class-scoped global view. Stocks, commodities, and indices use equity. Equity is the documented default only where the endpoint description states a default.

Allowed values

equitycrypto

Example:equity

hours integer QUERY

Lookback window in hours.

Default:720

clusters array<string> QUERY

Repeatable canonical author-cluster filter. Use /clusters to discover current cluster IDs.

Example:smart_money

cURL Example

curl --request GET \
  --url 'https://nebula-api.hiddensystems.ai/api/v1/public/calls' \
  --header 'X-API-Key: YOUR_API_KEY'

Responses

200 OK

400 Bad Request

401 Unauthorized

402 Credit balance exhausted

403 Forbidden

404 Not Found

429 Too Many Requests

500 Internal Server Error

503 Service Unavailable

Media type application/json

series

array<object> required

Chronologically ordered observations.

series[].long_calls

integer (int64) required

Number of long calls in the bucket.

series[].short_calls

integer (int64) required

Number of short calls in the bucket.

series[].timestamp

string required

UTC RFC 3339 timestamp for the observation or bucket start.

{
  "series": [
    {
      "long_calls": 184,
      "short_calls": 71,
      "timestamp": "2026-08-07T15:00:00Z"
    }
  ]
}