I successfully installed this docker https://github.com/gyoridavid/ai-agents-no-code-tools and it's running on, viewable at the domain and /health and /docs.
I was able to successfully test the API with ```
curl --location 'https://YOUR_DOMAIN/api/v1/media/audio-tools/tts/kokoro/voices'
So everything is seemingly working, but theres a connection issue between n8n hosted on Railway and the docker image hosted on railway as well. The form in n8n triggers the workflow to take the AI tools URL (the docker image) and add /health which spits back a server status (OK) then continues, or it gives the server error route. In this case it's given the error every time, despite being live and running. This is a railway to n8n specific issue, as discussed with the author of the docker image who hosts on coolify.