Saxo OpenAPI POST /root/v1/sessions/events/subscriptions

POST/root/v1/sessions/events/subscriptionsversion v1Session and user

Sets up a streaming subscription on the session's capabilities, so a change in them is pushed to you.

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Independent and unofficialdeveloper.saxochecked 12 Oct 2026

Read on Saxo's own reference page on 12 Oct 2026: method, path, parameters and response fields. Needs an open WebSocket connection with the same ContextId. Updates after the first snapshot arrive on that connection, not in the reply to this call. Remove the subscription when you are done with it. The page lists no request parameters for this call, so none is recorded beyond the headers. The inner fields of Snapshot were not read.

Parameters

Name	In	Type	Description
Content-Typerequired	header	string	Send application/json on a request with a body.

Authentication headers

Name	Type	Description
Authorizationrequired	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.

Python

# Set SAXO_SIM_TOKEN as an environment variable first. Never paste real values into code.
import os
import requests

BASE_URL = "https://gateway.saxobank.com/sim/openapi"  # the demo host
headers = {
    "Authorization": "Bearer " + os.environ["SAXO_SIM_TOKEN"],
    "Content-Type": "application/json",
}
resp = requests.post(BASE_URL + "/root/v1/sessions/events/subscriptions", headers=headers, 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.
// 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 + "/root/v1/sessions/events/subscriptions", {
  method: "POST",
  headers: {
    "Authorization": "Bearer " + process.env.SAXO_SIM_TOKEN,
    "Content-Type": "application/json",
  },
});
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.
curl -X POST "https://gateway.saxobank.com/sim/openapi/root/v1/sessions/events/subscriptions" \
  -H "Authorization: Bearer $SAXO_SIM_TOKEN" \
  -H "Content-Type: application/json"

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": {}
}

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.