Can I migrate by simply changing the WebSocket URL?

No. The new market feed uses a different protocol, so changing only the WebSocket URL will not work. You will need to update your market-feed integration as per the migration documentation.

For Python SDK users
Upgrade to kotakneoapi v3.0.1 or later and integrate the new market-feed client using the documentation below:
View Python SDK migration documentation

For other programming languages or custom clients
Refer to the developer guide for the complete protocol and end-to-end integration steps.