This is a topic that’s been discussed here quite a bit. Some providers, such as Finanzblick, have called Solarisbank’s API „bad“, while Solaris says that there is an API, all they need to do is use it. No idea what the latest developments are here. I love using services like Finanzblick (and dyme looks like something along the same line of thought), so I’d be thrilled to see this work out.