Feature Request: Add WebSocket subscription for whale alerts

[serayd61]

Feature Request

Description

Add a WebSocket subscription endpoint that allows clients to receive real-time notifications for large STX transfers (whale alerts).

Use Case

DeFi monitoring applications need to track large transactions in real-time. Currently, this requires polling the API or setting up Chainhooks separately.

Proposed Solution

Add a new WebSocket channel:

{
  "type": "subscribe",
  "channel": "whale-alerts",
  "threshold": 100000000000  // 100K STX in microSTX
}

Benefits

• Reduces API polling load
• Enables real-time DeFi monitoring
• Improves developer experience

Reference

I've implemented a similar feature in my project: https://github.com/serayd61/stacks-defi-sentinel

Would be happy to contribute if this feature is accepted.