Stocks Skill
Read-only market data via Yahoo Finance. Five commands:
quote
,
search
,
history
,
compare
,
crypto
. Python stdlib only — no API key, no pip
installs. Yahoo's endpoint is unofficial and may rate-limit or change.
When to Use
- User asks for a current stock price (AAPL, TSLA, MSFT, ...)
- User wants to look up a ticker by company name
- User wants OHLCV history or performance over a date range
- User wants to compare several tickers side by side
- User asks for a crypto price (BTC, ETH, SOL, ...)
Prerequisites
Python 3.8+ stdlib only. Optional: set
ALPHA_VANTAGE_KEY
to enrich
market_cap
,
pe_ratio
, and 52-week levels when Yahoo's crumb-protected
fields come back null. Free key:
https://www.alphavantage.co/support/#api-key
How to Run
Invoke through the
terminal
tool. Once installed:
SCRIPT=~/.hermes/skills/finance/stocks/scripts/stocks_client.py
python3 $SCRIPT quote AAPL
All output is JSON on stdout — pipe through
jq
if you want to slice it.
Quick Reference
python3 $SCRIPT quote AAPL
python3 $SCRIPT quote AAPL MSFT GOOGL TSLA
python3 $SCRIPT search "Tesla"
python3 $SCRIPT history NVDA --range 6mo
python3 $SCRIPT compare AAPL MSFT GOOGL
python3 $SCRIPT crypto BTC ETH SOL
Commands
quote SYMBOL [SYMBOL2 ...]
Current price, change, change%, volume, 52-week high/low.
search QUERY
Find tickers by company name. Returns top 5: symbol, name, exchange, type.
history SYMBOL [--range RANGE]
Daily OHLCV plus stats (min, max, avg, total return %). Ranges:
1mo
,
3mo
,
6mo
,
1y
,
5y
. Default:
1mo
.
compare SYMBOL1 SYMBOL2 [...]
Side-by-side: price, change%, 52-week performance.
crypto SYMBOL [SYMBOL2 ...]
Crypto prices. Pass
BTC
(the script appends
-USD
automatically).
Pitfalls
- Yahoo Finance's API is unofficial. Endpoints can change or rate-limit
without notice — if requests start failing, that's why.
market_cap
and pe_ratio
may return null on quote
when Yahoo's
crumb session isn't established. Set ALPHA_VANTAGE_KEY
to backfill.- Add a small delay between bulk requests to avoid rate-limiting.
- This is read-only — no order placement, no account integration.
Verification
python3 ~/.hermes/skills/finance/stocks/scripts/stocks_client.py quote AAPL
Returns a JSON object with
symbol: "AAPL"
and a numeric
price
field.
