> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/central-issuance/integrate-d1-api/d1-api-summary.md).

# D1 API summary

## Overview

This page provides a checklist of the D1 API endpoints typically required to integrate 3DS.

{% hint style="info" %}
**Direction** indicates who calls the endpoint:

* **Inbound**: your issuer backend calls the D1 API.
* **Outbound**: the D1 backend calls your issuer backend.
  {% endhint %}

## Required APIs

<table><thead><tr><th width="246">API</th><th width="177.5999755859375">Inbound/Outbound</th><th>Description</th></tr></thead><tbody><tr><td><a href="/pages/uEzPy2u8gld2HQVB2BKi#post-oauth2-token">Get authorization token</a></td><td>Issuer -> Thales D1</td><td>Get an OAuth 2.0 access token to call the D1 backend.</td></tr><tr><td><a href="/pages/lHQdBIzJy5oOXYM5IvQJ#post-issuers-issuerid-physicalcards-cardid-operations-production">Order card</a></td><td>Issuer -> Thales D1</td><td>Order a physical card</td></tr><tr><td><a href="/pages/ofGYuTDR7D8LqMwgGKOT#post-issuers-issuerid-physicalcards-batch">Order cards</a></td><td>Issuer -> Thales D1</td><td>Order several physical cards</td></tr></tbody></table>

## Optional APIs

<table><thead><tr><th width="252.79998779296875">API</th><th width="170.5999755859375">Inbound/Outbound</th><th>Description</th></tr></thead><tbody><tr><td><a href="/pages/wdR9OZ9JJd0hc8HLbOoc#put-v2-issuers-issuerid-cards-cardid">Register card</a></td><td>Issuer -> Thales D1</td><td>Register a card with corresponding cards credentials.</td></tr><tr><td><a href="/pages/7jYOB2jnWMpMRZ8vM6au#post-notifications-d1-v2-issuers-issuerid-cards">Card order status notifications</a></td><td>Issuer &#x3C;- Thales D1</td><td>Receive card order status real time</td></tr><tr><td><a href="/pages/lHQdBIzJy5oOXYM5IvQJ#get-issuers-issuerid-physicalcards-cardid-productionstatus">Get card order status</a></td><td>Issuer -> Thales D1</td><td>Get the status of a card order</td></tr><tr><td><a href="/pages/dswTMRIGEFJTOwQ0pois#post-issuers-issuerid-physicalcards-cardid-operations-updateorder">Pull &#x26; Change</a></td><td>Issuer -> Thales D1</td><td>Pull a card and request to apply a change</td></tr><tr><td><a href="/pages/i4ajFKCJqHp4MwDHx3yv#post-issuers-issuerid-physicalcards-cardid-track">Track card</a></td><td>Issuer -> Thales D1</td><td>Request to track the shipment of a card</td></tr></tbody></table>


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