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

# Unified Transaction APIs

> Standardized interface for fetching cryptocurrency transactions across multiple exchanges

## Overview

The Unified Transaction APIs provide a standardized interface for fetching and processing cryptocurrency transactions across multiple exchanges. These APIs use **session-based authentication** similar to the WebSocket API for enhanced security.

### Key Features

<CardGroup cols={2}>
  <Card title="Multi-exchange Support" icon="building-columns">
    Currently supports Bybit with more exchanges coming soon
  </Card>

  <Card title="Unified Data Format" icon="code">
    Standardized response format matching TypeScript interfaces
  </Card>

  <Card title="Flexible Credentials" icon="key">
    Use internal credentials or your own exchange API keys
  </Card>

  <Card title="Session Authentication" icon="shield-check">
    Secure token-based authentication system
  </Card>

  <Card title="Real-time Processing" icon="bolt">
    WebSocket streaming for live transaction updates
  </Card>
</CardGroup>

### Base URL

```
https://data.quantcite.com/api/v1
```

### Credential Options

The Unified Transaction APIs support two credential modes:

#### Internal Credentials (Default)

* **No setup required** - Use QuantCite's internal exchange credentials
* **Immediate access** - Start fetching transactions right away
* **Limited exchanges** - Currently available for Bybit only
* **No API key management** - We handle all exchange authentication

#### Your Own Credentials

* **Full control** - Use your own exchange API keys
* **All exchanges** - Access any supported exchange with your credentials
* **Enhanced security** - Your credentials never leave your control
* **Custom permissions** - Configure your exchange API keys as needed

### Supported Transaction Types

The unified API supports various transaction types across exchanges:

* **Deposits** - Incoming funds to your account
* **Withdrawals** - Outgoing funds from your account
* **Trades** - Spot and derivatives trading transactions
* **Transfers** - Internal transfers between accounts
* **Holdings** - Current account balances
* **Futures** - Linear and inverse futures trading
* **Leverage Tokens** - Leveraged token transactions

### Data Format

All transactions follow a standardized format for consistency across exchanges:

```typescript theme={null}
interface Transaction {
  transactionId: string;
  timestamp: number;
  label: string;
  sentCurrency?: {
    currency: string;
    amount: number;
  };
  receivedCurrency?: {
    currency: string;
    amount: number;
  };
  fee?: {
    currency: string;
    amount: number;
  };
  sender?: {
    name?: string;
    public_name?: string;
    walletId?: string;
  };
  description: {
    title: string;
    desc: string;
  };
}
```

## Next Steps

<CardGroup cols={2}>
  <Card title="Authentication" icon="key" href="/api-reference/unified/authentication">
    Learn how to authenticate and manage sessions
  </Card>

  <Card title="Fetch Transactions" icon="database" href="/api-reference/unified/transactions">
    Retrieve transactions from supported exchanges
  </Card>

  <Card title="WebSocket Streaming" icon="wifi" href="/api-reference/unified/websocket">
    Real-time transaction streaming via WebSocket
  </Card>

  <Card title="Supported Exchanges" icon="list" href="/api-reference/unified/exchanges">
    View all supported exchanges and capabilities
  </Card>
</CardGroup>