> 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/nfc-payment/integrate-the-d1-api/d1-api-summary.md).

# D1 API summary

### Overview <a href="#overview" id="overview"></a>

This page provides a checklist of the D1 API endpoints typically required to integrate PIN Management.**Direction** indicates who calls the endpoint:

* **Inbound**: your issuer backend calls the D1 API.
* **Outbound**: the D1 backend calls your issuer backend.

#### Required APIs <a href="#required-apis" id="required-apis"></a>

| API                                                                                                                                                                                                                                                                                | Inbound/Outbound    | Description                                           |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------- | ----------------------------------------------------- |
| ​[​Get authorization token​](https://app.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/s/Ezl7yJruGtpgrpgTXEjo/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/oauth2-api#post-oauth2-token)​                                                                                          | Issuer -> Thales D1 | Get an OAuth 2.0 access token to call the D1 backend. |
| ​[​Create card](/nfc-payment/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#put-v2-issuers-issuerid-cards-cardid) or [Register card​](/nfc-payment/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#put-v2-issuers-issuerid-cards-cardid)​ | Issuer -> Thales D1 | Create or register a card in the D1 backend.          |
| ​[​Renew card​](/nfc-payment/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#post-v2-issuers-issuerid-cards-cardid-operations-renew)​                                                                                                                          | Issuer -> Thales D1 | Renew a card.                                         |
| ​[​Replace card​](/nfc-payment/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#post-v2-issuers-issuerid-cards-cardid-operations-replace)​                                                                                                                      | Issuer -> Thales D1 | Replace a card.                                       |
| ​[​Delete card​](/nfc-payment/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#post-v2-issuers-issuerid-cards-cardid-operations-replace)​                                                                                                                       | Issuer -> Thales D1 | Delete a card from the D1 backend.                    |

#### Optional APIs <a href="#optional-apis" id="optional-apis"></a>

Use the APIs below depending on which flow you enable

| ​[Get authorization token](/nfc-payment/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/oauth2-api.md#post-oauth2-token)​                                   | Issuer <- Thales D1 | Get an OAuth 2.0 access token to call the Issuer backend.                                                                                                                     |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| ​[Get Card Credentials](/nfc-payment/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/card-api.md#get-cms-api-v1-issuers-issuerid-cards-cardid-credentials)​ | Issuer <- Thales D1 | If card data are not provided in the  [Register card​](/nfc-payment/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#put-v2-issuers-issuerid-cards-cardid) |

​


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