Finance — entry 024 of 47
IG
IG's trading API layers REST order execution and Lightstreamer-based streaming onto the same CFD, spread-betting, and forex engine behind IG's own platform, authenticated with an API key generated from a live account (a linked demo account then lets you sandbox trades risk-free). There's no separate API fee — access is included with any account and gated only by IG's standard per-key usage quotas, not a metered price. A live probe of the real API host (api.ig.com) returned `Access-Control-Allow-Origin: *` even on an error response, confirming CORS is open — correcting the previously-recorded `unknown`.
GreatAPIs Score
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<a href="https://greatapis.com/api/ig/"><img src="https://greatapis.com/badge/ig.svg" alt="Scored 84 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
60 requests/minute per app for non-trading calls, 100/minute per account for trading requests, 30/minute per account for other non-trading requests, 10,000 historical price data points/week, and 40 concurrent streaming subscriptions -- per the live 'Limits' FAQ at labs.ig.com/faq.html#limits.