Privacy Policy — RS for Screener
Last updated: March 2026
What data we collect
This extension does NOT collect, store, or transmit any personal user data.
What data leaves your browser
- Your Marketstack API key is stored locally in Chrome sync storage
- NSE stock symbols visible on Screener.in pages are sent to Marketstack API to fetch price data
- Nifty 50 and Nifty 500 index data is fetched from a Cloudflare Worker proxy (rs123-nifty.themicrocapinvestor.workers.dev), which relays data from an open source API through a Cron Job
- No user identity, browsing history, or personal information is ever transmitted
Third-party services used
- Marketstack (marketstack.com) — stock price data
- Cloudflare Workers — caching proxy for index data
For questions, open an issue on this repository.