POST /account/margin

Add or remove isolated margin on an open position

Add or remove isolated margin on an open position.

operationId: adjustMargin

Authentication: hmacAuth.

Request body

Required. application/json. The contract declares no schema for this body — only the example below, so a generated client gets an untyped body here.

{
  "market_id": "BTC-USDX-PERP",
  "amount": "100",
  "direction": "add"
}

Responses

Status	Body	Meaning
200	— (no schema declared)	Updated allocated margin and account collateral after the adjustment.
400	— (no schema declared)	Invalid amount, position not in isolated mode (MarginModeNotIsolated), or removal breaches the withdrawal floor / exceeds collateral (InsufficientMargin / InsufficientBalance).
401	— (no schema declared)	—
403	— (no schema declared)	—
404	— (no schema declared)	No open position for the account in this market (NoOpenPosition).
429	— (no schema declared)	—

Example

cURL

curl -X POST 'https://exchange.nexus.xyz/api/exchange/account/margin' \
  -H 'X-API-Key: nx_7f3a1b...' \
  -H 'X-Timestamp: 1776033911836' \
  -H 'X-Signature: <hmac-sha256>' \
  -H 'Content-Type: application/json' \
  -d '{
  "market_id": "BTC-USDX-PERP",
  "amount": "100",
  "direction": "add"
}'

Python

import requests

headers = {
    "X-API-Key": "nx_7f3a1b...",
    "X-Timestamp": "1776033911836",
    "X-Signature": "<hmac-sha256>",
    "Content-Type": "application/json"
}
payload = {
    "market_id": "BTC-USDX-PERP",
    "amount": "100",
    "direction": "add"
}

response = requests.post("https://exchange.nexus.xyz/api/exchange/account/margin", headers=headers, json=payload)
response.raise_for_status()
print(response.json())

TypeScript

const response = await fetch("https://exchange.nexus.xyz/api/exchange/account/margin", {
  method: "POST",
  headers: {
    "X-API-Key": "nx_7f3a1b...",
    "X-Timestamp": "1776033911836",
    "X-Signature": "<hmac-sha256>",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "market_id": "BTC-USDX-PERP",
    "amount": "100",
    "direction": "add"
  }),
});
if (!response.ok) throw new Error(`${response.status} ${await response.text()}`);
console.log(await response.json());

X-Signature is a placeholder: it is derived from this specific request. See Authentication for the canonical string and the HMAC rule.

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_{Generated from eng/apps/exchange/api/openapi.json (spec 0.9.36). Do not edit by hand — regenerate with python3 product/docs/tools/api-reference/generate.py. Hand-authored context lives in the Guides pages.}