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POST
/
portfolio
/
margin
/
subaccounts
Create Subaccount
curl --request POST \
  --url https://external-api.kalshi.com/trade-api/v2/portfolio/margin/subaccounts \
  --header 'KALSHI-ACCESS-KEY: <api-key>' \
  --header 'KALSHI-ACCESS-SIGNATURE: <api-key>' \
  --header 'KALSHI-ACCESS-TIMESTAMP: <api-key>'
{
  "subaccount_number": 123
}

Documentation Index

Fetch the complete documentation index at: https://docs.kalshi.com/llms.txt

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

Authorizations

​
KALSHI-ACCESS-KEY
string
header
required

Your API key ID

​
KALSHI-ACCESS-SIGNATURE
string
header
required

RSA-PSS signature of the request

​
KALSHI-ACCESS-TIMESTAMP
string
header
required

Request timestamp in milliseconds

Response

Margin subaccount created successfully

​
subaccount_number
integer
required

The sequential number assigned to this subaccount (1-32).