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

# API Overview

> What the Bolta API offers and how to get started.

# Introducing the Bolta API

<Note>
  Some links point to the service guide, which is in Korean.
</Note>

Bolta provides RESTful APIs for issuing e-tax invoices and cash receipts, issuing documents, and looking up business registration status, bank account holders, revenue and expense records, and bank account transactions. Test keys prefixed with `test_` let you test your integration without connecting to the National Tax Service (NTS).

## Getting started

<CardGroup cols={2}>
  <Card title="API Reference" href="/en/api-reference/tax-invoice-issuance/issue-tax-invoice">
    Explore the full API endpoint reference.
  </Card>

  <Card title="Issue an API key" href="/docs/developer-center/api-key">
    Create test and live keys to start your integration.
  </Card>
</CardGroup>