MCPInstall

stock-analysis

Analyze stocks and cryptocurrencies using Yahoo Finance data. Supports portfolio management (create, add, remove assets), crypto analysis (Top 20 by market cap), and periodic performance reports (daily/weekly/monthly/quarterly/yearly). 8 analysis dimensions for stocks, 3 for crypto. Use for stock analysis, portfolio tracking, earnings reactions, or crypto monitoring.

Installs
12.1K
Last 24h
+8
Trending rank
#9433
Security
Warn

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/gracefullight/stock-checker --skill stock-analysis
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads stock-analysis automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

Security audits

Independent scans of the skill's instructions and bundled files.

Gen Agent Trust Hub PassSAFE ·The skill provides stock and cryptocurrency analysis by fetching data from trusted financial sources. It manages local portfolios and scans breaking news for risk factors. A surface for indirect prompt injection exists in the processing of external news headlines, although risk is mitigated by using keyword-based scoring rather than executing instructions found in the data.
Socket PassNo alerts
Snyk WarnMEDIUM ·Risk: MEDIUM · 1 issue
Runlayer PassLOW ·2/7 files flagged
ZeroLeaks PassNONE ·Score: 93/100 · 2 sections analyzed

SKILL.md

The instructions your agent reads when the skill is triggered.

Stock Analysis (v5.0)

Analyze US stocks and cryptocurrencies using Yahoo Finance data. Includes portfolio management, crypto support, and periodic analysis.

Quick Start

IMPORTANT: Pass ONLY the stock ticker symbol(s) as arguments. Do NOT add extra text, headers, or formatting in the command.

Analyze a single ticker:

uv run {baseDir}/scripts/analyze_stock.py AAPL
uv run {baseDir}/scripts/analyze_stock.py MSFT --output json

Compare multiple tickers:

uv run {baseDir}/scripts/analyze_stock.py AAPL MSFT GOOGL

Cryptocurrency Analysis (v5.0)

Analyze top 20 cryptocurrencies by market cap:

uv run {baseDir}/scripts/analyze_stock.py BTC-USD
uv run {baseDir}/scripts/analyze_stock.py ETH-USD SOL-USD

Supported Cryptos: BTC-USD, ETH-USD, BNB-USD, SOL-USD, XRP-USD, ADA-USD, DOGE-USD, AVAX-USD, DOT-USD, MATIC-USD, LINK-USD, ATOM-USD, UNI-USD, LTC-USD, BCH-USD, XLM-USD, ALGO-USD, VET-USD, FIL-USD, NEAR-USD

Crypto Analysis Dimensions:

  • Market cap (large/mid/small classification)
  • Category (Smart Contract L1, DeFi, Payment, etc.)
  • BTC correlation (30-day)
  • Momentum (RSI, price range)
  • Market context (VIX, general market regime)

Portfolio Management (v5.0)

Create and manage portfolios with mixed assets (stocks + crypto):

# Create portfolio
uv run {baseDir}/scripts/portfolio.py create "My Portfolio"

# Add assets
uv run {baseDir}/scripts/portfolio.py add AAPL --quantity 100 --cost 150.00
uv run {baseDir}/scripts/portfolio.py add BTC-USD --quantity 0.5 --cost 40000 --portfolio "My Portfolio"

# View holdings with current P&L
uv run {baseDir}/scripts/portfolio.py show

# Update/remove assets
uv run {baseDir}/scripts/portfolio.py update AAPL --quantity 150
uv run {baseDir}/scripts/portfolio.py remove BTC-USD

# List/delete portfolios
uv run {baseDir}/scripts/portfolio.py list
uv run {baseDir}/scripts/portfolio.py delete "My Portfolio"

Portfolio Storage: ~/.clawdbot/skills/stock-analysis/portfolios.json

Portfolio Analysis (v5.0)

Analyze all assets in a portfolio with optional period returns:

# Analyze portfolio
uv run {baseDir}/scripts/analyze_stock.py --portfolio "My Portfolio"

# With period returns (daily/weekly/monthly/quarterly/yearly)
uv run {baseDir}/scripts/analyze_stock.py --portfolio "My Portfolio" --period weekly
uv run {baseDir}/scripts/analyze_stock.py -p "My Portfolio" --period monthly

Portfolio Summary includes:

  • Total cost, current value, P&L
  • Period return (if specified)
  • Concentration warnings (>30% in single asset)
  • Recommendation summary (BUY/HOLD/SELL counts)

Examples:

  • ✅ CORRECT: uv run {baseDir}/scripts/analyze_stock.py BAC
  • ✅ CORRECT: uv run {baseDir}/scripts/analyze_stock.py BTC-USD
  • ❌ WRONG: uv run {baseDir}/scripts/analyze_stock.py === BANK OF AMERICA (BAC) - Q4 2025 EARNINGS ===
  • ❌ WRONG: uv run {baseDir}/scripts/analyze_stock.py "Bank of America"

Use the ticker symbol only (e.g., BAC, not "Bank of America"). For crypto, use the -USD suffix (e.g., BTC-USD).

Analysis Components

The script evaluates eight key dimensions:

  1. Earnings Surprise (30% weight): Actual vs expected EPS, revenue beats/misses
  2. Fundamentals (20% weight): P/E ratio, profit margins, revenue growth, debt levels
  3. Analyst Sentiment (20% weight): Consensus ratings, price target vs current price
  4. Historical Patterns (10% weight): Past earnings reactions, volatility
  5. Market Context (10% weight): VIX, SPY/QQQ trends, market regime
  6. Sector Performance (15% weight): Stock vs sector comparison, sector trends
  7. Momentum (15% weight): RSI, 52-week range, volume, relative strength
  8. Sentiment Analysis (10% weight): Fear/Greed Index, short interest, VIX term structure, insider trading, put/call ratio

Sentiment Sub-Indicators:

  • Fear & Greed Index (CNN): Contrarian signal (extreme fear = buy opportunity, extreme greed = caution)
  • Short Interest: High shorts + squeeze potential = bullish; justified shorts = bearish
  • VIX Term Structure: Contango = complacency/bullish; backwardation = stress/bearish
  • Insider Activity: Net buying/selling from SEC Form 4 filings (90-day window)
  • Put/Call Ratio: High ratio = excessive fear/bullish; low ratio = complacency/bearish

Weights auto-normalize if some components unavailable.

Special Timing Checks:

  • Pre-earnings warning (< 14 days): Recommends HOLD instead of BUY
  • Post-earnings spike detection (> 15% in 5 days): Flags "gains priced in"
  • Overbought conditions (RSI > 70 + near 52w high): Reduces confidence

Timing Warnings & Risk Flags

The script detects high-risk scenarios:

Earnings Timing

  • Pre-Earnings Period: If earnings < 14 days away, BUY signals become HOLD
  • Post-Earnings Spike: If stock up > 15% in 5 days after earnings, warns "gains may be priced in"

Technical Risk

  • Overbought Conditions: RSI > 70 + near 52-week high = high-risk entry

Market Risk

  • High VIX: Market fear (VIX > 30) reduces confidence in BUY signals
  • Risk-Off Mode (v4.0.0): When safe-havens (GLD, TLT, UUP) rise together, reduces BUY confidence by 30%
    • Detects flight to safety across gold, treasuries, and USD
    • Triggers when GLD ≥ +2%, TLT ≥ +1%, UUP ≥ +1% (5-day change)

Sector Risk

  • Sector Weakness: Stock may look good but sector is rotating out

Geopolitical Risk (v4.0.0)

The script now scans breaking news (last 24h) for crisis keywords and automatically flags affected stocks:

  • Taiwan Conflict: Semiconductors (NVDA, AMD, TSM, INTC, etc.) → 30% confidence penalty
  • China Tensions: Tech/Consumer (AAPL, QCOM, NKE, SBUX, etc.) → 30% confidence penalty
  • Russia-Ukraine: Energy/Materials (XOM, CVX, MOS, CF, etc.) → 30% confidence penalty
  • Middle East: Oil/Defense (XOM, LMT, RTX, etc.) → 30% confidence penalty
  • Banking Crisis: Financials (JPM, BAC, WFC, C, etc.) → 30% confidence penalty

If a ticker is not in the affected list but its sector is exposed, applies a 15% confidence penalty.

Example Alert:

⚠️ SECTOR RISK: Tech supply chain and consumer market exposure (detected: china, tariff)

Breaking News Alerts (v4.0.0)

  • Scans Google News RSS for crisis keywords (war, recession, sanctions, disasters, etc.)
  • Displays up to 2 breaking news alerts in caveats (last 24 hours)
  • Uses 1-hour cache to avoid excessive API calls

Output Format

Default (text): Concise buy/hold/sell signal with 3-5 bullet points and caveats

JSON: Structured data with scores, metrics, and raw data for further analysis

Limitations

  • Data freshness: Yahoo Finance may lag 15-20 minutes
  • Sentiment data staleness:
    • Short interest data lags ~2 weeks (FINRA reporting schedule)
    • Insider trades may lag filing by 2-3 days
    • VIX term structure only updates during futures trading hours
  • Breaking news limitations (v4.0.0):
    • Google News RSS may lag by 15-60 minutes
    • Keyword matching may have false positives/negatives
    • Does not analyze sentiment, only detects keywords
    • 1-hour cache means alerts may be slightly stale
  • Missing data: Not all stocks have analyst coverage, options chains, or complete fundamentals
  • Execution time: 3-5s per stock with async parallel fetching and caching (shared indicators cached for 1h)
  • Disclaimer: All outputs include prominent "not financial advice" warning
  • US markets only: Non-US tickers may have incomplete data

Error Handling

The script gracefully handles:

  • Invalid tickers → Clear error message
  • Missing analyst data → Signal based on available metrics only
  • API failures → Retry with exponential backoff, fail after 3 attempts

FAQ

What does the stock-analysis skill do?

Analyze stocks and cryptocurrencies using Yahoo Finance data. Supports portfolio management (create, add, remove assets), crypto analysis (Top 20 by market cap), and periodic performance reports (daily/weekly/monthly/quarterly/yearly). 8 analysis dimensions for stocks, 3 for crypto. Use for stock analysis, portfolio tracking, earnings reactions, or crypto monitoring.

How do I install stock-analysis?

Run npx skills add https://github.com/gracefullight/stock-checker --skill stock-analysis in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/stock-analysis/ (personal) or .claude/skills/stock-analysis/ (project).

Which AI agents can use stock-analysis?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is stock-analysis safe to install?

Security partners have reviewed it: Gen Agent Trust Hub passed; Socket passed; Snyk flagged items to review; Runlayer passed; ZeroLeaks passed. As with any skill, read the SKILL.md and bundled scripts before installing.

Who maintains stock-analysis?

It is published by gracefullight in gracefullight/stock-checker. It has 12,075 recorded installs.

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