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GET
/
expirations
/
{exchange}
/
{coin}
List expiration dates
curl --request GET \
  --url https://api.gammaflip.io/api/v1/expirations/{exchange}/{coin} \
  --header 'X-API-Key: <api-key>'
{
  "data": {
    "expirations": [
      "25APR26",
      "02MAY26",
      "09MAY26",
      "27JUN26"
    ]
  },
  "meta": {
    "timestamp": "2026-04-14T10:00:00+00:00",
    "exchange": "all",
    "coin": "BTC",
    "rate_limit": {
      "limit": 500,
      "remaining": 487,
      "reset": "2026-04-15T00:00:00+00:00"
    }
  }
}

Documentation Index

Fetch the complete documentation index at: https://docs.gammaflip.io/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
X-API-Key
string
header
required

API key prefixed with gex_sk_. Create one in your account dashboard.

Path Parameters

​
exchange
enum<string>
required

Exchange name (bybit, deribit, okx) or all for aggregated data.

Available options:
bybit,
deribit,
okx,
all,
combined
Example:

"all"

​
coin
string
required

Base coin symbol (uppercase).

Example:

"BTC"

Response

Expiration list

​
data
object
required

The response payload.

​
meta
object
required