Skills stock-checker

SKILL: stock-checker

install

source · Clone the upstream repo

git clone https://github.com/openclaw/skills

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/openclaw/skills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/acrid-auto/acrid-skill-creator/examples/stock-checker" ~/.claude/skills/clawdbot-skills-stock-checker && rm -rf "$T"

manifest: skills/acrid-auto/acrid-skill-creator/examples/stock-checker/SKILL.md

source content

SKILL: stock-checker

Description

Fetches the current stock price for a given ticker symbol using free public APIs. Returns the price in USD along with daily change data. No API key required.

Usage

Use when you need to check a stock price, compare current values, or get a quick market snapshot for a ticker.

Triggers: "What's the price of AAPL?", "Check stock price for TSLA", "Get me a quote on MSFT"

Inputs

Parameter Required Type Default Description

ticker

Yes

string

—

Stock ticker symbol (e.g.,

AAPL

TSLA

GOOGL

). Must be 1-5 uppercase alpha characters.

Outputs

Structured text response:

**<TICKER>** — $<price> USD
Change: <+/->$<amount> (<+/-><%>)
Volume: <volume>
As of: <timestamp>

Steps

Validate input — Confirm
```
ticker
```
is 1-5 alphabetic characters. Convert to uppercase if needed. If invalid, return: "Invalid ticker symbol. Please provide 1-5 letters (e.g., AAPL)."

Fetch stock data — Use WebFetch to call:

https://query1.finance.yahoo.com/v8/finance/chart/<TICKER>?range=1d&interval=1d

Check response — If the response contains an error or the result array is empty:
- Return: "Could not find data for ticker '<TICKER>'. Verify the symbol and try again."

Extract price data from the JSON response:

price

chart.result[0].meta.regularMarketPrice

previousClose

chart.result[0].meta.chartPreviousClose

volume

chart.result[0].meta.regularMarketVolume

Calculate
```
change = price - previousClose
```

Calculate

changePercent = (change / previousClose) * 100

Format and return:

**<TICKER>** — $<price> USD
Change: <+/->$<change> (<+/-><%changePercent>)
Volume: <volume>
As of: <current timestamp>

Error Handling

Scenario	Action
Invalid ticker format	Return validation error with format hint
API unreachable / timeout	Return: "Unable to reach market data API. Try again shortly."
Ticker not found	Return: "No data found for '<TICKER>'. Check the symbol."
Market closed / stale data	Still return last known price, note "Market closed" in output