Finance — entry 038 of 47
SmartAPI
SmartAPI is Angel One's (formerly Angel Broking's) trading API for India's NSE/BSE/MCX markets, offering REST order placement and account access plus WebSocket market-feed streaming, authenticated with an API key tied to an Angel One trading account. Angel One charges nothing to access any SmartAPI category — trading, historical, market-feed, or publisher — only its usual flat per-order brokerage fees apply once trades execute. A live Origin-header probe of the real API host (apiconnect.angelone.in) returned no Access-Control-Allow-Origin header, so CORS resolves to `no` — the stored `unknown` was unresolved, not confirmed open. The `angelbroking.com` domain still resolves to the same rebranded product, but the current live domain is `angelone.in`; the `smartapi` slug is kept unchanged for URL stability.
GreatAPIs Score
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<a href="https://greatapis.com/api/smartapi/"><img src="https://greatapis.com/badge/smartapi.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
Order placement/modification/cancellation: 9 requests/second combined, 500/minute, 1,000/hour; most market-data endpoints (LTP/quote, margin calculator, GTT rules, historical candles): 10 requests/second, 500/minute, 5,000/hour; limits enforced per client code, per smartapi.angelone.in/docs/RateLimit