API Endpoint

Margin Buying Power

Calculate buying power under margin requirements (initial and maintenance).

Endpoint

POST https://likeoptions.com/api/v1/calculate/margin

Also supports GET with query parameters.

Parameters

Parameter	Type	Default	Description
`equity`	number	—	Account equity ($)
`initialMarginPercent`	number	50	Initial margin requirement (%)
`maintenanceMarginPercent`	number	25	Maintenance margin requirement (%)
`existingLoanBalance`	number	0	Existing margin loan ($)

Request Examples

POST (JSON body)

curl -X POST https://likeoptions.com/api/v1/calculate/margin \
  -H "Content-Type: application/json" \
  -d '{"equity": 100000, "initialMarginPercent": 50, "maintenanceMarginPercent": 25}'

GET (query parameters)

curl "https://likeoptions.com/api/v1/calculate/margin?equity=100000&initialMarginPercent=50&maintenanceMarginPercent=25"

Response

{
  "kind": "margin",
  "result": {
    "primary": 1234.56,
    "secondary": [
      { "label": "Example metric", "value": 100, "format": "money" },
      { "label": "Example percent", "value": 5.5, "format": "percent" }
    ]
  }
}

When to Use

Calculate available buying power
Understand margin requirements
Plan leverage strategy

Error Handling

400 Bad Request — Invalid input parameters or missing required fields
404 Not Found — Unknown calculator kind
429 Too Many Requests — Rate limit exceeded (120 req/hour per IP)
413 Payload Too Large — Request body exceeds 16 KB

Related Endpoints

Stock Profit/Loss

View request examples in JavaScript, Python, cURL, and more →