Broker OI Webhook Integration

I need a small, working bridge that pulls Open Interest from the Dhan terminal and instantly sends it to TradingView through a webhook. The core goal is to see the data appear inside my TradingView alerts or Pine Script without manual refreshes.

Scope
• Broker: Dhan (primary). If you can tap the Zerodha feed as well, great—just be sure the solution still focuses on real-time data.
• Data points required:
– Current Open Interest
– Change in Open Interest
– Volume with Open Interest
• Frequency: real-time; latency must be low enough to react to fast-moving markets.

Deliverables
1. A lightweight script, plug-in, or serverless function that connects to the broker API and fires JSON to my TradingView webhook URL.
2. Sample payload structure so I can map fields in Pine Script.
3. Quick setup guide (auth keys, environment variables, and how to run/host the code).

Keep dependencies minimal—Python or Node.js is fine, provided the code is readable and easy to redeploy. Once I can reliably receive those three data points in TradingView, the job is complete.