Page source is amazing. I can't remember the last time I've seen a serious YC company launch page with absolutely zero JavaScript. Even the CSS is just a single selector.
We should definitely further clarify this! We built Integuru as an internal tool while building the products for Taiki. Then we realized that other developers may need the agent, too, so we decided to open-source Integuru. In terms of the current focus for our team, we are spending most of our time on Integuru because newly requested integrations take some of our resources to build, and we want to continue improving the agent. I think the correct way to frame this is a market expansion, where we're expanding beyond the tax industry.
I'm a fan.