# PatternsRadar — NSE stock screener with backtesting

> Screen 3,500+ NSE stocks on price, volume, delivery and technicals across 30 years of split-adjusted history — then test the scan against a year of sessions before you trust it.

Canonical: https://patternsradar.com/

PatternsRadar is a stock screener for the National Stock Exchange of India, built by Bitmask (https://bitmask.in). Build a scan by clicking blocks together or write it in Sift, a readable query language — two views of one query. Screen 3,500+ NSE instruments across 30 years of split-adjusted daily history on 139 scannable fields, indicators and candlestick patterns — including delivery percentage, then replay any scan over the last 250 sessions to see its hit rate before trusting it. End-of-day only, NSE only. Latest session: 2026-08-20.

Screening is free with no account. Pro (₹400/month) adds end-of-day email alerts; Max (₹2,000/month) adds webhooks and higher limits. Every plan, including Free, has REST API and MCP access.

## Where to go

- [Scan library](https://patternsradar.com/scans.md): 115 prebuilt scans, each with its query, an explanation and a backtest
- [Glossary](https://patternsradar.com/learn.md): 48 indicators, fields and patterns, each with a working scan
- [Sift language reference](https://patternsradar.com/docs/sift.md)
- [API reference](https://patternsradar.com/docs/api.md) and [MCP server](https://patternsradar.com/docs/mcp.md)
- [Blog](https://patternsradar.com/blog.md), [Comparisons](https://patternsradar.com/compare.md), [Pricing](https://patternsradar.com/pricing.md), [About](https://patternsradar.com/about.md), [The screener](https://patternsradar.com/screener.md)
- Machine-readable: [llms.txt](https://patternsradar.com/llms.txt) and [llms-full.txt](https://patternsradar.com/llms-full.txt)

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