Saxo OpenAPI POST /trade/v2/orders/precheck

POST/trade/v2/orders/precheckversion v2Orders

Checks an order without placing it and returns the expected costs, cash required and margin impact. Useful to show a cost preview before the user confirms.

Risk warning: CFDs and spread bets are complex instruments and come with a high risk of losing money rapidly due to leverage. You can lose money on these products, and each provider publishes its own loss figure under FCA rules. You should consider whether you understand how they work and whether you can afford to take the high risk of losing your money. Automated and API trading can amplify losses through bugs, connectivity failures and runaway orders.

Independent and unofficialdeveloper.saxochecked 12 Oct 2026

Does not place an order. Saxo's page advises checking ErrorInfo on a 200 reply and also lists 503. ManualOrder does not appear in this call's parameter table. Saxo's parameter table for this call has no required or optional column; the required flags here are our reading of Saxo's descriptions and example request, not markers on Saxo's page. Method, path and parameter names were re-read on Saxo's reference page for this call on 12 Oct 2026 and agree with this record. That page does not mark which parameters are required, so the required flags here were not re-checked, and the mock reply was not compared field by field.

Parameters

Name	In	Type	Description
AccountKeyrequired, not confirmed	body	string	Account to place the order on, from GET /port/v1/accounts/me.
Uicrequired, not confirmed	body	integer	Unique id of the instrument.
AssetTyperequired, not confirmed	body	string	The instrument's asset type.
BuySellrequired, not confirmed	body	string	Buy or Sell.
Amountrequired, not confirmed	body	number	Order size.
OrderTyperequired, not confirmed	body	string	Placeable order type, for example Market, Limit or Stop.
OrderPrice	body	number	Order price; optional for market orders.
OrderDurationrequired, not confirmed	body	object	Duration, for example DurationType DayOrder or GoodTillCancel.
ExternalReference	body	string	Your own reference, up to 50 characters.
Orders	body	array	Optional related take profit and stop orders, or an OCO order.
FieldGroups	body	array	Extra results to return, for example Costs and MarginImpactBuySell.

The required marks on this page are this site's reading of secondary material, as the note above says. Which fields the API insists on is not confirmed on the provider's own reference.

Authentication headers

Name	Type	Description
Authorizationrequired, not confirmed	string	OAuth 2.0 bearer access token. In SIM you can use a 24 hour token from the Saxo developer portal. Placeholder only: never paste a real token into this site.

Request

Written from the method, path and parameters recorded on this page, against the demo host. Not executed against a live or demo account. Credentials are read from environment variables on your own machine and are never entered on this site. The request builder writes these same snippets, from the same record.

This call takes a request body. The samples send it as JSON with a Content-Type of application/json (in Python, passing json= sets that header) and a placeholder for each of the 7 body fields the record marks as required, a mark that is not confirmed. Each placeholder has to be replaced with a real value before the request can succeed.

Python

# Set SAXO_SIM_TOKEN as an environment variable first. Never paste real values into code.
# Replace each {placeholder}, "..." and 0 with a real value before running.
# Optional and not shown: body fields OrderPrice, ExternalReference, Orders, FieldGroups.
import os
import requests

BASE_URL = "https://gateway.saxobank.com/sim/openapi"  # the demo host
headers = {
    "Authorization": "Bearer " + os.environ["SAXO_SIM_TOKEN"],
}
body = {"AccountKey": "...", "Uic": 0, "AssetType": "...", "BuySell": "...", "Amount": 0, "OrderType": "...", "OrderDuration": {}}
resp = requests.post(BASE_URL + "/trade/v2/orders/precheck", headers=headers, json=body, timeout=10)
resp.raise_for_status()
print(resp.json())

JavaScript

// Set SAXO_SIM_TOKEN as an environment variable first. Never paste real values into code.
// Replace each {placeholder}, "..." and 0 with a real value before running.
// Optional and not shown: body fields OrderPrice, ExternalReference, Orders, FieldGroups.
// Run as a module, for example a .mjs file, on a Node version that has fetch built in.
const BASE_URL = "https://gateway.saxobank.com/sim/openapi"; // the demo host
const res = await fetch(BASE_URL + "/trade/v2/orders/precheck", {
  method: "POST",
  headers: {
    "Authorization": "Bearer " + process.env.SAXO_SIM_TOKEN,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"AccountKey": "...", "Uic": 0, "AssetType": "...", "BuySell": "...", "Amount": 0, "OrderType": "...", "OrderDuration": {}}),
});
if (!res.ok) throw new Error(`HTTP ${res.status}`);
console.log(await res.json());

curl

# Set SAXO_SIM_TOKEN as an environment variable first. Never paste real values into code.
# Replace each {placeholder}, "..." and 0 with a real value before running.
# Optional and not shown: body fields OrderPrice, ExternalReference, Orders, FieldGroups.
curl -X POST "https://gateway.saxobank.com/sim/openapi/trade/v2/orders/precheck" \
  -H "Authorization: Bearer $SAXO_SIM_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"AccountKey": "...", "Uic": 0, "AssetType": "...", "BuySell": "...", "Amount": 0, "OrderType": "...", "OrderDuration": {}}'

Response

A mock response. The values are invented, so check field names against the official reference.

{
  "_mock": true,
  "PreCheckResult": "Ok",
  "EstimatedCashRequired": 10,
  "EstimatedCashRequiredCurrency": "EUR",
  "Cost": {
    "Commission": 1,
    "ExchangeFee": 0,
    "StampDuty": 0
  },
  "EstimatedTotalCost": 1,
  "EstimatedTotalCostInAccountCurrency": 1,
  "InstrumentToAccountConversionRate": 1,
  "MarginImpactBuySell": {
    "Currency": "EUR",
    "InitialMarginBuy": 0,
    "MaintenanceMarginBuy": 0
  }
}

Response schema, HTTP 200

Every field this site's OpenAPI file for Saxo OpenAPI declares for this response.

Field	Type	Description
PreCheckResult	string	Not recorded
EstimatedCashRequired	number	Not recorded
EstimatedCashRequiredCurrency	string	Not recorded
Cost	object	Not recorded
Commission	number	Not recorded
ExchangeFee	number	Not recorded
StampDuty	number	Not recorded
EstimatedTotalCost	number	Not recorded
EstimatedTotalCostInAccountCurrency	number	Not recorded
InstrumentToAccountConversionRate	integer	Not recorded
MarginImpactBuySell	object	Not recorded
Currency	string	Not recorded
InitialMarginBuy	number	Not recorded
MaintenanceMarginBuy	number	Not recorded

developer.saxochecked 4 Oct 2026

Limits that apply at Saxo OpenAPI

Limit	Value	Scope	Source
Headline limit	120/min per session, per service group	session	developer.saxochecked 18 Sep 2026

Saxo API errors you may meet

All Saxo API error codes, including 137 more not listed here.