OAuth client_credentials

[petefc]

I was reviewing this video:

https://experienceleague.adobe.com/docs/acrobat-services-learn/tutorials/acrobatsign/oem/generating-...

And I can successfully create an access token using the authorization_code flow.

(the documentation of what URL should be used for the token endpoint is very unclear.  This worked for me: https://api.na3.adobesign.com/oauth/v2/token, but the video used: https://secure.na3.adobesign.com/oauth/v2/token , which throws an error)

I am wondering if adobe sign supports the client_credentials flow as that is a replacement for the Integration Key which is now deprecated.

When I try to use the client_credentials i get a

{

"error_description": "Invalid grant_type client_credentials",

"error": "invalid_request"

}

this post from several years ago:
https://community.adobe.com/t5/adobe-acrobat-sign-discussions/trying-to-use-the-echosign-api-with-oa...

indicates that adobe support recomends using the authorization code flow and just keept the the refresh token (which has a 6 month lifespan) alive.

That seems like a huge work around.

Is there any update on full OAuth support?

[Meenakshi Negi]

Hi petefc,

Thank you for reaching out.

For information on OAuth support, please refer to the information on the following help page: https://helpx.adobe.com/coldfusion/api-manager/authentication-types.html. 

Check if that helps.

Thanks,

Meenakshi

[petefc]

Thanks @Meenakshi Negi  that refers to oAuth rellated to ColdFusion not eSign.   I think this blog post is more on topic about Adobe's OAuth strategy.
https://blog.developer.adobe.com/important-update-for-developers-using-adobe-apis-bf25110d3b4

That said I have confirmation that eSign does not currently support the grant_type  client_credentials.   
The only way to maintain a persistent connenction to eSign in a stateless way is with that deprecated Integration Key.