Show HN: Caveat, a self-hosted publishing and newsletter tool

Caveat, a self-hosted publishing and newsletter tool built with GPT-6 Astra over three sessions, is now available on GitHub, offering a rich-text editor, subscriber management, and Resend email delivery. The developer processed roughly 43.6M tokens, about 97% cached input, and notes that paid subscriptions, scheduling, and multi-author workflows are not yet implemented.

I’ve been working on Caveat, a self-hosted publishing tool for people who want control over their newsletter’s design, subscriber data, and infrastructure. It includes a rich-text editor, autosave, reusable content blocks, publication designs, typography and colour controls, subscriber management, exports, and Resend email delivery. It includes both the editor and public website. Repo: https://github.com/CaveatJS/site https://github.com/CaveatJS/site Examples/docs: https://caveat-home.vercel.app/ https://caveat-home.vercel.app/ I built the first version over a few hours across three sessions with GPT-6 Astra. I chose the features, tested the workflows, and refined the design and implementation. The sessions processed roughly 43.6M tokens, about 97% cached input. Caveat is still early: paid subscriptions, scheduling, and multi-author workflows are not implemented yet. If you publish a newsletter, what part of your workflow would prevent you from using it today? Comments URL: https://news.ycombinator.com/item?id=49605072 https://news.ycombinator.com/item?id=49605072 Points: 1 Comments: 0