Saxo OpenAPI POST /trade/v1/prices/subscriptions

POST/trade/v1/prices/subscriptionsversion v1Prices

Sets up a streaming price subscription on one instrument and returns an initial snapshot. Updates then arrive on your WebSocket connection under the same ContextId and ReferenceId.

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

Needs an open WebSocket connection with the same ContextId (see Saxo's streaming guide). Saxo lists 409 on this call when the subscription limit is exceeded, and 404 for an unknown instrument. 503 Service Unavailable is also listed. 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
ContextIdrequired, not confirmed	body	string	Id of your streaming connection; letters, digits, dash and underscore, up to 50 characters.
ReferenceIdrequired, not confirmed	body	string	Your own id for this subscription; up to 50 characters.
Argumentsrequired, not confirmed	body	object	PriceRequest: AccountKey, Uic, AssetType, Amount and optional FieldGroups.
RefreshRate	body	integer	Optional minimum time in milliseconds between updates.
Format	body	string	Media type of updates, application/json or application/x-protobuf.

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 3 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 RefreshRate, Format.
import os
import requests

BASE_URL = "https://gateway.saxobank.com/sim/openapi"  # the demo host
headers = {
    "Authorization": "Bearer " + os.environ["SAXO_SIM_TOKEN"],
}
body = {"ContextId": "...", "ReferenceId": "...", "Arguments": {}}
resp = requests.post(BASE_URL + "/trade/v1/prices/subscriptions", 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 RefreshRate, Format.
// 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/v1/prices/subscriptions", {
  method: "POST",
  headers: {
    "Authorization": "Bearer " + process.env.SAXO_SIM_TOKEN,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"ContextId": "...", "ReferenceId": "...", "Arguments": {}}),
});
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 RefreshRate, Format.
curl -X POST "https://gateway.saxobank.com/sim/openapi/trade/v1/prices/subscriptions" \
  -H "Authorization: Bearer $SAXO_SIM_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"ContextId": "...", "ReferenceId": "...", "Arguments": {}}'

Response

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

{
  "_mock": true,
  "ContextId": "MOCKCONTEXT01",
  "ReferenceId": "MOCKREF01",
  "RefreshRate": 1000,
  "InactivityTimeout": 30,
  "Format": "application/json",
  "State": "Active",
  "Snapshot": {
    "Uic": 12345,
    "AssetType": "Stock",
    "LastUpdated": "2000-01-01T09:00:00Z",
    "Quote": {
      "Bid": 10,
      "Ask": 10.02,
      "Mid": 10.01
    }
  }
}

Response schema, HTTP 201

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

Field	Type	Description
ContextId	string	Not recorded
ReferenceId	string	Not recorded
RefreshRate	integer	Not recorded
InactivityTimeout	integer	Not recorded
Format	string	Not recorded
State	string	Not recorded
Snapshot	object	Not recorded
Uic	integer	Not recorded
AssetType	string	Not recorded
LastUpdated	string	Not recorded
Quote	object	Not recorded
Bid	number	Not recorded
Ask	number	Not recorded
Mid	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.