Thema "Betreff: Generate API KEY Fails" in The Viessmann API

Generate API KEY Fails

S_Zander — Wed, 21 Dec 2022 05:20:43 GMT

I have tried every method on the forum to get an API key. I always get an error after step 2. "{"error": "invalid-token-request"}". I have tried with POSTMAN, with Bash, with PHP Script always the same result. Which leads me to the next, whether it's salesforce, bitbucket, jira or any other software, no software has such a user unfriendly method of generating API keys as Viessmann. One could get the feeling that Viessman doesn't want any intergations. Any Idea to get the Key? I work with this document https://documentation.viessmann.com/static/authentication

Greetz Sam

Betreff: Generate API KEY Fails

CaCicala — Wed, 21 Dec 2022 13:50:18 GMT

Hi,

I completely understand your frustration, almost everyone here has experienced it. In case you're willing to use Node-Red, I've written several tutorials for the Viessmann API in conjunctiion with NR.

Start with this one here:

https://www.viessmann-community.com/t5/The-Viessmann-API/How-to-avoid-sudden-death-after-180-days-automatic/td-p/261034

Kind Regards

Chris

Betreff: Generate API KEY Fails

S_Zander — Sat, 24 Dec 2022 07:48:44 GMT

I had used a other form of the url in the first step, so i had enough time for the second step and it works

thanks