Broker API
Capital.com API: questions and answers
7 questions about the Capital.com API, each answered from the Capital.com 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.
Capital.com API questions
Does Capital.com have an API?
Yes. This register records Capital.com as having its own API (REST and WebSocket), with availability marked as active. Public REST API and WebSocket feed for Capital.com CFD accounts, live and demo.
Capital.com: public API docschecked
The Capital.com API record. The same question for every record.
Does Capital.com have a demo or paper trading API?
Yes: separate demo base URL.
Capital.com Public APIchecked
The Capital.com record's full wording. The same question for every record.
What are Capital.com's API rate limits?
Headline limit: 10/s per user. Scope: user.
open-api.capital.comchecked
Capital.com API rate limits in full, each with its scope. The same question for every record.
How do I authenticate with the Capital.com API?
POST /session with the X-CAP-API-KEY header plus login credentials returns CST and X-SECURITY-TOKEN, sent on later calls. The session expires after 10 minutes of inactivity.
Capital.com Public APIchecked
The Capital.com record's full wording. The same question for every record.
Does Capital.com support streaming or WebSocket prices?
WebSocket wss://api-streaming-capital.backend-capital.com/connect, maximum of 40 epics per subscription; the session lasts 10 minutes and is kept alive with ping.
Capital.com Public APIchecked
The Capital.com record's full wording. The same question for every record.
Is there an official Python library for Capital.com?
No Python library marked official is recorded here for Capital.com, which is not evidence that none exists. The record lists as community: capital-mcp and capitalcom-python.
capital-mcpchecked capitalcom-pythonchecked
Every library in the Capital.com record. The same question for every record.
Does Capital.com have an MCP server?
The MCP server register on this site holds 2 servers for Capital.com. Published by the provider itself: capital-mcp. Published by the community, not by the provider: capitalcom-mcp-server.
capital-mcpchecked capitalcom-mcp-serverchecked
The MCP server directory, with what each server can do. The same question for every record.
Not recorded here
The Capital.com record cannot answer these questions yet, so they are not asked above. That is a gap in this dataset. It says nothing either way about Capital.com.
- What does the most referenced Capital.com error mean? Not recorded here
Where to go next
- The Capital.com 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.