Hi Gerco,
firstly, we want to inform you that we moved your last reply to this discussion because your question is about parsers. We hope that this is fine for you.
You say you are complete new to the ZENNER Datahub, does this mean you have already an account with a tenant or that you inform yourself about the platform? Usually, we indeed provide a parser for every sensor that can be included into the platform out of the box. In case you have sensors which are not yet compatible, we can evaluate if we can change this. So, it is indeed so far unusual that customers write or want to write their own custom parsers. Nevertheless, we reached out to our development team which operates the Datahub technically to clarify to what extent this is possible at all so far. We will get back to you as soon as we have the answer.
Best regards