Postbox
Form backends have a structure problem. Data collection for the agentic web. Define your schema, get an endpoint where submissions arrive validated, spam-filtered, translated and auto-replied.
Developer Tools·AI & Machine Learning·Productivity·Marketing
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Postbox is the post-submit layer for forms. You define your fields, we give you an endpoint, and everything between "submit" and "the data's in your system" just works — validation, spam filtering, translation, auto-replies, routing.
In 10 words or less: Postbox is the form backend you were going to build anyways and more.
Why Postbox exists
The word form does something funny to your brain. You hear it and you see fields to fill in, a button to press. That's been the shape of it since the web first became interactive — and it works fine for humans. But agents hate forms. Especially the ones that ask for one field at a time, and the platforms that charge you to put your own logo on them. We hated them too.
So we wondered if we could do it better. And then we realised we'd had it all wrong — or been made to have it all wrong. A form isn't a UI with fields and a button. A form is a contract. The schema is the intent. The URL is the interface. That's all an agent needs. Humans get it too, because the contract doesn't care who's holding it. Postbox is for both of them.
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