Hello Upstox Developer Support Team,
I have created a new Upstox developer app and I am facing an issue while using Market Data Feed WebSocket V3.
App Details:
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App Name: UPSTOCKS DATA
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App Type: Regular
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Status: Connected
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Date Created: 29/01/2026
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API Access Token: Generated successfully (OAuth flow working fine)
Issue Description:
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I am using the official Python SDK (
MarketDataStreamerV3) to subscribe to option chain instruments. -
REST APIs (LTP, option contracts, expiry, instrument keys) are working perfectly.
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WebSocket connects successfully, but immediately disconnects (connected → closed loop).
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The SDK keeps auto-reconnecting and the connection is closed again by the server.
This behavior indicates that Market Data Feed WebSocket V3 permission is not enabled for my app/account.
What I Need:
Kindly enable Market Data Feed WebSocket V3 access for my app/account so that I can receive real-time market data over WebSocket.
I have verified that:
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Only one WebSocket connection is active
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Correct instrument keys are used
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Access token is valid
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SDK version is up to date
Reference:
Multiple developers have reported the same issue on the Upstox Developer Community, and the resolution was enabling WebSocket V3 permissions on the backend.
Please let me know if any additional information is required from my side.
Thank you for your support.
Regards,
[Yash]
Upstox Developer