vriad

Looks really interesting! Similar to a company called Workpath [0] that was recently acquired by Ro.

I'm also building a related company called Brick Health [1] that does something similar, but is partnering with brick-and-mortar facilities instead of doing home visits. This is definitely a huge open problem.

[0] https://www.workpath.co [1] https://brick.health

Creator of Zod here. I wrote up a blog post comparing Zod to the other popular object schema validation libraries (yup, io-ts, joi): https://vriad.com/blog/zod. I don't address the various JSON-Schema validation libraries since none of them have static type inference, which is (imho) the killer feature.