> 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/tokenization/integrate-the-d1-api/d1-api-reference.md).

# D1 API reference

Use this section to browse the D1 APIs and download the OpenAPI (Swagger) specifications.

### Download OpenAPI (Swagger) files

Import these specs into Swagger UI, Postman, or your API tooling.

#### Inbound APIs (Issuer -> Thales D1)

* OAuth2 API: [D1-Public-IN-v1-Auth2](https://openapi.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/spec/D1-Public-IN-v1-Auth2.yaml)
* Consumer API: [D1-Public-IN-v2-Consumer](https://openapi.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/spec/D1-Public-IN-v2-Consumer.yaml)
* Card API : [D1-Public-IN-v2-Card](https://openapi.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/spec/D1-Public-IN-v2-Card.yaml)
* Digital card API: [D1-Public-IN-v1-Digital-Card](https://openapi.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/spec/D1-Public-IN-v1-Digital-Card.yaml)

#### Outbound APIs (Issuer <- Thales D1)

* OAuth2 API: [D1-Public-OUT-v1-Auth2](https://openapi.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/spec/D1-Public-OUT-v1-Auth2.yaml)
* Consumer API: [D1-Public-OUT-v1-Consumer](https://openapi.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/spec/D1-Public-OUT-v1-Consumer.yaml)
* Card API: [D1-Public-OUT-v2-Card](https://openapi.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/spec/D1-Public-OUT-v2-Card.yaml)
* Digital card API: [D1-Public-OUT-v1-Digital-Card](https://openapi.gitbook.com/o/fwy1mtbRONGA2YDKDBr0/spec/D1-Public-OUT-v1-Digital-Card.yaml)

{% hint style="info" %}
Each spec includes the operations shown in the related API reference pages.
{% endhint %}

### Browse the API reference

#### Inbound API (Issuer -> Thales D1)

* [OAuth2 API](/tokenization/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/oauth2-api.md)
* [Consumer API](/tokenization/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/consumer-api.md)
* [Card API](/tokenization/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md)
* [Digital card API](/tokenization/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/digital-card-api.md)

#### Outbound API (Issuer <- Thales D1)

* [OAuth2 API](/tokenization/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/oauth2-api.md)
* [Consumer API](/tokenization/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/consumer-api.md)
* [Card API](/tokenization/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/card-api.md)
* [Digital card API](/tokenization/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/digital-card-api.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.payments.thalescloud.io/tokenization/integrate-the-d1-api/d1-api-reference.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.