Broker API
Saxo API: questions and answers
8 questions about the Saxo API, each answered from the Saxo record on this site and nothing else.
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.
An answer here is the record's own wording, cut at the end of a sentence, or a list of names read from records. An answer that opens with the word Unverified has no dated source behind it. Where this page and the provider's own documentation differ, the documentation wins. Nothing here recommends a broker.
Saxo API questions
Does Saxo have an API?
Yes. This register records Saxo as having its own API (REST and WebSocket streaming), with availability marked as active. OAuth 2.0 REST and WebSocket API, with a free simulation environment.
Does Saxo have a demo or paper trading API?
Yes: SIM environment; 24 hour portal tokens work in SIM only.
Saxo Environmentschecked
The Saxo record's full wording. The same question for every record.
What are Saxo's API rate limits?
Headline limit: 120/min per session, per service group. Scope: session.
developer.saxochecked
Saxo API rate limits in full, each with its scope. The same question for every record.
How do I authenticate with the Saxo API?
OAuth 2.0 authorization code (with or without PKCE); app key and secret for live. Refresh tokens rotate: each is invalidated on use and replaced. Certificate-based auth is for select partners only, not retail.
Saxo OpenAPI Learnchecked
The Saxo record's full wording. The same question for every record.
Does Saxo support streaming or WebSocket prices?
WebSocket streaming (SIM and live hosts).
Saxo Environmentschecked
The Saxo record's full wording. The same question for every record.
Is there an official Python library for Saxo?
No Python library marked official is recorded here for Saxo, which is not evidence that none exists. The record lists as community: saxo_openapi.
saxo_openapichecked
Every library in the Saxo record. The same question for every record.
Does Saxo have an MCP server?
The MCP server register on this site holds 1 server for Saxo. Published by the community, not by the provider: saxo-mcp.
saxo-mcpchecked
The MCP server directory, with what each server can do. The same question for every record.
What does Saxo error IllegalInstrumentId mean?
The instrument is unknown. Saxo's description is Unknown instrument name. Saxo lists this among the error codes of the order placement endpoint.
developer.saxochecked
Saxo error IllegalInstrumentId: the meaning in full and what to do. The same question for every record.
Where to go next
- The Saxo API record in full: every field with its source
- Answers for every broker and platform API
- Which retail brokers have a public trading API?
- Which broker APIs have a demo environment?
- What are the rate limits of each broker API?
- How does each broker API authenticate?
- Which broker APIs stream prices?
- Which broker APIs have an official Python library?
- Which broker APIs have an MCP server?
- What does each API's most referenced error mean?
Other brokers
In order of name. The order is not a ranking.