> ## Documentation Index
> Fetch the complete documentation index at: https://docs.axionquant.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction to Axion SDK

> Comprehensive financial data API for stocks, crypto, ETFs, economic indicators, and more

<img className="block dark:hidden" src="https://mintlify.s3.us-west-1.amazonaws.com/axion-683a4b20/images/hero-light.svg" alt="Hero Light" />

<img className="hidden dark:block" src="https://mintlify.s3.us-west-1.amazonaws.com/axion-683a4b20/images/hero-dark.svg" alt="Hero Dark" />

## Welcome to Axion SDK

Axion SDK is a powerful Node.js library that provides seamless access to comprehensive financial data across multiple asset classes. Build sophisticated financial applications with real-time market data, fundamental analysis, sentiment insights, and alternative data sources.

<CardGroup cols={2}>
  <Card title="Multiple Asset Classes" icon="chart-line" href="#comprehensive-coverage">
    Access stocks, crypto, ETFs, forex, futures, and indices all through a unified API
  </Card>

  <Card title="Fundamental Data" icon="building-columns" href="#fundamental-analysis">
    Get detailed financials, earnings reports, SEC filings, and company profiles
  </Card>

  <Card title="Alternative Data" icon="brain" href="#alternative-insights">
    Leverage sentiment analysis, ESG scores, supply chain data, and web traffic metrics
  </Card>

  <Card title="Economic Indicators" icon="globe" href="#economic-data">
    Track economic calendars, search datasets, and monitor global economic indicators
  </Card>
</CardGroup>

## Comprehensive Coverage

The Axion SDK provides access to 18 specialized API modules, each designed for specific financial data needs:

### Market Data APIs

* **Stocks** - Tickers, prices, and historical data for equities
* **Crypto** - Cryptocurrency spot prices and market data
* **ETFs** - Fund details, holdings, and exposure analysis
* **Forex** - Foreign exchange rates and currency pairs
* **Futures** - Futures contracts and derivatives
* **Indices** - Market indices and benchmarks

### Fundamental Analysis

* **Profiles** - Company information, statistics, and summaries
* **Financials** - Revenue, income statements, balance sheets, and cash flow
* **Earnings** - Earnings history, trends, and reports
* **Filings** - SEC filings including 10-K, 10-Q, and 8-K forms
* **Insiders** - Institutional ownership, insider transactions, and fund holdings

### Alternative Insights

* **Sentiment** - Social media, news, and analyst sentiment analysis
* **ESG** - Environmental, Social, and Governance scores
* **Supply Chain** - Customer, supplier, and peer relationship data
* **Web Traffic** - Website traffic analytics for public companies
* **Credit** - Credit ratings and credit-related data

### News & Economic Data

* **News** - General market news, company-specific news, and category feeds
* **Economic Data** - Economic indicators, calendars, and dataset search

## Quick Example

Here's how simple it is to get started with the Axion SDK:

```javascript theme={null}
import { Axion } from '@axionquant/sdk';

// Initialize the client
const client = new Axion('your-api-key');

// Get stock information
const stock = await client.stocks.ticker('AAPL');

// Fetch historical prices
const prices = await client.stocks.prices('AAPL', {
  from: '2024-01-01',
  to: '2024-01-31',
  frame: 'daily'
});

// Get company sentiment
const sentiment = await client.sentiment.all('AAPL');
```

## Key Features

<AccordionGroup>
  <Accordion title="TypeScript Support">
    Built with TypeScript for full type safety and IntelliSense support in your IDE.
  </Accordion>

  <Accordion title="Promise-Based API">
    All methods return promises, making it easy to use with async/await or traditional promise chains.
  </Accordion>

  <Accordion title="Comprehensive Error Handling">
    Detailed error messages for HTTP errors, connection issues, and authentication failures.
  </Accordion>

  <Accordion title="Flexible Parameters">
    Optional parameters allow you to customize requests with date ranges, filters, and pagination.
  </Accordion>
</AccordionGroup>

## Next Steps

<CardGroup cols={2}>
  <Card title="Installation" icon="download" href="/installation">
    Install the SDK using npm, yarn, or pnpm
  </Card>

  <Card title="Quick Start" icon="rocket" href="/quickstart">
    Build your first application in minutes
  </Card>

  <Card title="Authentication" icon="key" href="/authentication">
    Learn how to configure your API key
  </Card>

  <Card title="API Reference" icon="book" href="/reference/client">
    Explore the complete API documentation
  </Card>
</CardGroup>