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

# Introduction

> Transaction monitoring helps you detect and prevent fraudulent activities in your transactions. This API documentation provides details on how to use Sigma's transaction monitoring.

### How it works

The process of transaction monitoring involves several key steps:

1. **Transaction Initiation**\
   Your customer initiates a transaction with your system using a mobile app or any other means available.

2. **Data Collection**\
   Your system receives this transaction and sends the transaction data to Sigma Transaction Monitoring for review.

3. **Real-Time Analysis**\
   The transaction is analyzed in real-time by Sigma AI to detect suspicious patterns and irregularities with the transaction data.

4. **Fraud Detection**\
   If any fraudulent activity is detected, Sigma AI can flag the transaction for manual review or block the transaction and notify your team.

5. **Reporting** <br />
   Detailed reports are generated for further analysis and compliance purposes.

<img className="" src="https://mintcdn.com/pastelafrica/MhKZ6j7mW3E_SvBN/images/tm/flow.png?fit=max&auto=format&n=MhKZ6j7mW3E_SvBN&q=85&s=514b7f75599e5827021abf9193451517" style={{ borderRadius: "0.5rem" }} width="3968" height="3044" data-path="images/tm/flow.png" />

## Quick Links

<CardGroup cols={2}>
  <Card title="Submitting Transaction" icon="database" href="submit-transactions">
    See how you can send your transactions to us, so we run our sophisticated
    checks
  </Card>

  <Card title="Setup Rules" icon="snowflake" href="rules">
    Set custom rules for transactions, e.g: Auto-reject crypto-related
    transacations.
  </Card>

  <Card title="Blacklist" icon="square" href="blacklist">
    You can choose to blacklist devices, accounts, and more.
  </Card>

  <Card title="API Reference" icon="paper-plane" href="../../api-reference/transaction-monitoring/endpoint/submit-transaction-instant">
    See API references for transaction monitoring
  </Card>
</CardGroup>