# indicator-scanner

Generates Python scanners to screen stock watchlists using technical indicators like RSI, EMA, and Supertrend. Useful for automated market monitoring.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 581 installs · ★ 19
- Author: marketcalls
- License: not stated · policy=link-only · description only; the file stays with the author
- Source: https://github.com/marketcalls/openalgo-indicator-skills/tree/HEAD/.claude/skills/indicator-scanner/SKILL.md
- Updated: 2026-06-12
- HTML: https://affpapa.org/en/nevibecode/skills/indicator-scanner

## What it does

This skill writes dedicated Python screening scripts inside `scanners/{scan_type}/`. It fetches candle history through `client.history()` and evaluates setups via the `openalgo.ta` package. Matches are printed to the terminal as a clean table and stored in a CSV file.

The system includes predefined watchlists for NIFTY 50 and Bank NIFTY alongside triggers such as RSI extremes, EMA crosses, Bollinger squeezes, and volume spikes. Custom rule combinations are also supported.

Execution depends on a valid `.env` file in the project root. Without credentials for the OpenAlgo client, historical data requests will fail.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add marketcalls/openalgo-indicator-skills --skill indicator-scanner -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/indicator-scanner/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/indicator-scanner/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add marketcalls/openalgo-indicator-skills --skill indicator-scanner -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/indicator-scanner/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add marketcalls/openalgo-indicator-skills --skill indicator-scanner -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/indicator-scanner/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install marketcalls/openalgo-indicator-skills indicator-scanner
```

2. **Manually: put the files in place**
- File: `.github/skills/indicator-scanner/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add marketcalls/openalgo-indicator-skills --skill indicator-scanner -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/marketcalls/openalgo-indicator-skills --path .claude/skills/indicator-scanner
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/indicator-scanner/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add marketcalls/openalgo-indicator-skills --skill indicator-scanner -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/marketcalls/openalgo-indicator-skills/tree/HEAD/.claude/skills/indicator-scanner/SKILL.md

## When to use it
- Screen watchlist tickers for RSI overbought or oversold conditions
- Detect moving average and MACD crossovers across multiple stocks
- Export technical scan matches directly to CSV spreadsheets
- Generate custom Python market scanners based on technical setups

## Example prompts
- /indicator-scanner rsi-oversold nifty50
- /indicator-scanner ema-crossover banknifty
- /indicator-scanner supertrend-buy nifty50

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From the same set: [marketcalls/openalgo-indicator-skills](https://affpapa.org/en/nevibecode/by/marketcalls/openalgo-indicator-skills.md) — 7 cards

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md