Hi @product_scansys_nl, @SierdW, @JohanFriedrichsen, @FenistraKristian, @Michel V, @WimV, the new base URL is now available, and this article has been updated with this information.
The old integration site https://integration.visma.net/API-index/ provides an API specification in Swagger/OpenAPI 2.0 format but it looks like the new site...