I work on https://plasmic.app https://plasmic.app. You can emit code into your codebase or fetch over an API, and it supports static site frameworks like Next a

I work on https://plasmic.app https://plasmic.app. You can emit code into your codebase or fetch over an API, and it supports static site frameworks like Next and Gatsby. We are very focused on your use case, so would love to hear if this works for you.