Option Chain

Pulls option chain data from Yahoo Finance with all the standard fields you'd expect: strikes, bid/ask spreads, volume, open interest, and implied volatility for both calls and puts. You run it twice, first to see available expiration dates, then to fetch the actual chain for whichever date you care about. The output comes back as JSON with separate arrays for calls and puts, plus the underlying price for reference. It timestamps everything in New York time, which matters for options trading. Useful when you need to quickly scan the chain without opening a browser or want to feed the data into another script.

skills.sh installs: 111
GitHub stars: 406
last updated: Jun 11, 2026

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Install

$ npx -y skills add staskh/trading_skills --skill option-chain --agent claude-code

Installs into .claude/skills of the current project.

Files

Option Chain

Fetch option chain data from Yahoo Finance for a specific expiration date.

Instructions

Note: If uv is not installed or pyproject.toml is not found, replace uv run python with python in all commands below.

First, get available expiration dates:

uv run python scripts/options.py SYMBOL --expiries

Then fetch the chain for a specific expiry:

uv run python scripts/options.py SYMBOL --expiry YYYY-MM-DD

Arguments

SYMBOL - Ticker symbol (e.g., AAPL, SPY, TSLA)
--expiries - List available expiration dates only
--expiry YYYY-MM-DD - Fetch chain for specific date

Output

Returns JSON with:

calls - Array of call options with strike, bid, ask, volume, openInterest, impliedVolatility
puts - Array of put options with same fields
underlying_price - Current stock price for reference

Present data as a table. Highlight high volume/OI strikes and notable IV levels.

Dependencies

pandas
yfinance

Timezone

All timestamps and time-based calculations must use the America/New_York timezone. All JSON output must include generated_at (NY time string) and data_delay fields.

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