Yes, it is possible to use Ory Kratos as an OAuth2 provider. Ory Kratos is an identity management server that is part of the Ory ecosystem, which is fully compliant with OAuth 2.0 and OpenID Connect. To set up Ory Kratos as an OAuth2 provider, you can create projects and OAuth2 clients using either the Ory Console or the Ory CLI. Here is an example of how to create a project and an OAuth2 client using the CLI:

bash ory create project --name "OAuth2 Server - Example Corp"   # Note down the project ID   export project_id=your-project-id # replace with your project ID      ory create oauth2-client --project "$PROJECT_ID" \    --name "Example Corp" \    --grant-type authorization_code,refresh_token \    --response-type code \    --scope openid,offline_access,email \    --redirect-uri <https://your-project-slug.projects.oryapis.com/self-service/methods/oidc/callback/H1o_k--i> # replace with your redirect URI

After setting up the OAuth2 provider, you can connect apps and other projects to it. OAuth2-enabled apps can sign in users via the SSO provider using the OAuth2 authorization code flow straight away. For more detailed information, you can refer to the [Ory documentation](https://www.ory.sh/docs/kratos/social-signin/ory).