> 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/instant-issuance/instant-issuance-ja/d1-apiwosuru/d1-apirifarensu/autobaundoapid1kara/d1-oauth-api.md).

# D1 OAuth API

## Get Authorization Token

> This request is used by Thales to retrieve an OAUTH 2.0 access authorization token to be used for outgoing issuer API requests.

```json
{"openapi":"3.0.0","info":{"title":"D1 OAuth API","version":"1.0"},"servers":[{"url":"https://YOUR_DOMAIN/authz/d1/v1"}],"paths":{"/oauth2/token":{"post":{"description":"This request is used by Thales to retrieve an OAUTH 2.0 access authorization token to be used for outgoing issuer API requests.","parameters":[{"schema":{"type":"string"},"in":"header","name":"authorization","description":"The authorization header includes a client secret in base64URL encoded format following this syntax: Basic \"[clientId:client secret]\" as per https://www.rfc-editor.org/rfc/rfc2617","required":true}],"requestBody":{"content":{"application/x-www-form-urlencoded":{"schema":{"$ref":"#/components/schemas/auth2Request"}}}},"responses":{"200":{"description":"Default allowed response","content":{"application/json":{"schema":{"type":"object","properties":{"access_token":{"type":"string","description":"The access token issued by the authorization server","readOnly":true},"expires_in":{"type":"string","description":"Remaining time in seconds for the access_token to expire.","readOnly":true},"scope":{"type":"string","description":"Scope of the access_token.","readOnly":true},"token_type":{"description":"Type of the access_token that will be used to call Issuer APIs.","enum":["Bearer"]},"expires_at":{"type":"string","description":"Access token expiration timestamp","readOnly":true}},"required":["access_token","token_type"]}}}},"400":{"description":"Bad request"}},"summary":"Get Authorization Token","operationId":"getAccessToken"}}},"components":{"schemas":{"auth2Request":{"type":"object","title":"Authorization request body","properties":{"grant_type":{"type":"string","enum":["client_credentials"]},"scope":{"description":"Access request scope as optionally defined by the issuer ","type":"string"}},"required":["grant_type"]}}}}
```


---

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