> 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/push-provisioning/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)

#### 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)

### Browse the API reference

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

Inbound APIs are called by the issuer backend and target the D1 backend.

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

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

Outbound APIs are called by the D1 backend and target the issuer backend.

* [OAuth2 API](/push-provisioning/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/oauth2-api.md)
* [Consumer API](/push-provisioning/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/consumer-api.md)


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