curl -H "X-API-KEY: your-api-key" \
     -H "sharetoken: SHARED_PORTFOLIO_TOKEN" \
     -H "passcode: 123456" \
     "https://api.coinstats.app/v1/portfolio/chart?type=1m"

{
  "result": [
    [1701388800000, 125430.52],
    [1701475200000, 128945.76],
    [1701561600000, 126780.44],
    [1701648000000, 130205.18],
    [1701734400000, 132890.92],
    [1701820800000, 131450.38],
    [1701907200000, 134720.65]
  ]
}

const response = await fetch('https://api.coinstats.app/v1/portfolio/chart?type=1m', {
  headers: {
    'X-API-KEY': 'your-api-key'
  }
});
const data = await response.json();

// Transform data for Chart.js
const chartData = {
  labels: data.result.map(point => new Date(point[0]).toLocaleDateString()),
  datasets: [{
    label: 'Portfolio Value (USD)',
    data: data.result.map(point => point[1]),
    borderColor: 'rgb(75, 192, 192)',
    tension: 0.1
  }]
};

// Create chart
new Chart(ctx, {
  type: 'line',
  data: chartData,
  options: {
    responsive: true,
    plugins: {
      title: {
        display: true,
        text: 'Portfolio Performance - Last 30 Days'
      }
    }
  }
});

import requests
import matplotlib.pyplot as plt
from datetime import datetime

response = requests.get(
    'https://api.coinstats.app/v1/portfolio/chart',
    params={'type': '1m'},
    headers={
        'X-API-KEY': 'your-api-key'
    }
)
data = response.json()

# Extract timestamps and values
timestamps = [datetime.fromtimestamp(point[0]/1000) for point in data['result']]
values = [point[1] for point in data['result']]

# Create plot
plt.figure(figsize=(12, 6))
plt.plot(timestamps, values, linewidth=2)
plt.title('Portfolio Performance - Last 30 Days')
plt.xlabel('Date')
plt.ylabel('Value (USD)')
plt.grid(True, alpha=0.3)
plt.xticks(rotation=45)
plt.tight_layout()
plt.show()

async function getPortfolioMetrics(portfolioId, period) {
  const response = await fetch(
    `https://api.coinstats.app/v1/portfolio/chart?type=${period}&portfolioId=${portfolioId}`,
    {
      headers: {
        'X-API-KEY': 'your-api-key'
      }
    }
  );
  const data = await response.json();
  
  const values = data.result.map(p => p[1]);
  const firstValue = values[0];
  const lastValue = values[values.length - 1];
  const maxValue = Math.max(...values);
  const minValue = Math.min(...values);
  
  return {
    currentValue: lastValue,
    startValue: firstValue,
    change: lastValue - firstValue,
    changePercent: ((lastValue - firstValue) / firstValue * 100).toFixed(2),
    highValue: maxValue,
    lowValue: minValue,
    volatility: ((maxValue - minValue) / minValue * 100).toFixed(2)
  };
}

// Usage
const metrics = await getPortfolioMetrics('YOUR_PORTFOLIO_ID', '1m');
console.log(`30-Day Performance: ${metrics.changePercent}%`);
console.log(`Volatility: ${metrics.volatility}%`);

async function comparePerformance(portfolioId) {
  const periods = ['24h', '1w', '1m', '1y'];
  const results = {};
  
  for (const period of periods) {
    const response = await fetch(
      `https://api.coinstats.app/v1/portfolio/chart?type=${period}&portfolioId=${portfolioId}`,
      {
        headers: {
          'X-API-KEY': 'your-api-key'
        }
      }
    );
    const data = await response.json();
    const values = data.result.map(p => p[1]);
    const change = ((values[values.length - 1] - values[0]) / values[0] * 100).toFixed(2);
    results[period] = `${change}%`;
  }
  
  return results;
}

// Output example:
// { '24h': '+2.4%', '1w': '+5.8%', '1m': '+12.3%', '1y': '+45.6%' }