Kroki [1] supports TikZ and by extension: PGF [2] and LaTeX. It supports SVG, PDF, JPEG, and PNG outputs. Rendering is done on the server. URLs can be quite long since the source is embedded in the URL but you can use a URL shortener [3].
Reminds me of Mats Järlström who challenged traffic light timing. "The [Oregon State Board of Examiners for Engineering and Land Surveying] fined Mats $500 and said that he could not talk about traffic lights in public until he obtained a state-issued professional-engineer license."
Regarding deterministic latency, the Time-Sensitive Networking (TSN) [1] set of IEEE standards address this. The IEEE P802.1DG project [2] in particular defines a TSN profile for automotive.