> For the complete documentation index, see [llms.txt](https://docs.cleartax.in/cleartax-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cleartax.in/cleartax-docs/e-invoicing-api/introduction-to-e-invoicing-api.md).

# Introduction to E-Invoicing API

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## Learn Basics

Learn basics and best practices of using ClearTax E-Invoicing APIs.

{% content-ref url="/pages/-M2m0KNllmIZPQJq-43\_" %}
[Learn E-Invoicing API Basics](/cleartax-docs/e-invoicing-api/learn-e-invoicing-api-basics.md)
{% endcontent-ref %}

## API Reference

Get complete reference on E-Invoicing API.

{% content-ref url="/pages/-Lz0w\_5y-728gsy\_skwG" %}
[E-Invoicing API Reference](/cleartax-docs/e-invoicing-api/e-invoicing-api-reference.md)
{% endcontent-ref %}

## E-Invoicing FTP Magnet

Get the specification document and a typical project plan of E-Invoicing FTP Magnet.

{% content-ref url="/pages/-M2Yry7iLR9Dd6NgJ2O5" %}
[E-Invoicing FTP Magnet](/cleartax-docs/e-invoicing-api/e-invoicing-ftp-magnet.md)
{% endcontent-ref %}