market-data

davdunc-plugins

Claude Code plugins for equities trading: watchlist generation, trading plans, and historical market data retrieval powered by Massive.com (Polygon.io).

Plugins

market-data

Type: Claude Code skill (/market-data)

Download historical per-minute and daily OHLCV data from Massive.com flat files for any US-listed ticker. Includes premarket, regular session, and postmarket candles stored locally for analysis.

/market-data GSAT 2026-04-01
/market-data AAPL 2026-03-25 2026-03-28

• 1-minute bars with full extended hours coverage
• Local caching (won't re-download dates you already have)
• Configurable storage directory

equities-watchlist

Type: MCP server

Daily equities watchlist and trading plan generator. Screens for high-volume, high-volatility candidates and builds structured morning briefs.

Tools:

• get_watchlist — Screen and rank candidates using Finviz + Polygon data (RVOL, ATR, premarket volume)
• get_trading_plan — Generate a morning trading plan with market overview, Camarilla pivots, and news
• get_previous_day_analysis — Analyze prior session intraday moves from flat file minute data
• get_calendar_events — Economic releases, earnings, and ex-dividend dates

Prompts:

• morning_trading_brief — Full structured brief with bias, if/then trade plans, and stocks to avoid

Requirements

• Claude Code
• Massive.com subscription (any paid plan with flat file access)
• AWS CLI for flat file downloads
• Python 3.11+

Configuration

Both plugins use Massive.com credentials. Set via environment variables or a .env file:

# S3 flat file access
export MASSIVE_S3_ACCESS_KEY="your-access-key-id"
export MASSIVE_S3_SECRET_KEY="your-secret-key"

# API access (equities-watchlist)
export POLYGON_API_KEY="your-api-key"

# Optional: Finviz Elite (equities-watchlist screening)
export FINVIZ_API_KEY="your-finviz-key"

See each plugin's README for detailed setup instructions.

Installation

market-data skill

# As a Claude Code plugin
claude plugin install davdunc/davdunc-plugins --path market-data

# Or copy directly
cp -r market-data/skills/market-data ~/.claude/skills/

equities-watchlist MCP server

cd equities-watchlist
pip install -e .

# Register with Claude Code
claude mcp add equities-watchlist -- equities-watchlist

License

MIT