Ephemeral Writing is a tool for writing procedural text. It is a nice interface for a tool called Tracery with the goal of making procedural text generation available to non-programmers in a super streamlined form.
What does it do? It allows you to procedurally generate text. You can use that text to feed Bluesky bots, to create SVG images, to name your child or for any other purpose where you want to have varied, partially randomised text.
How does it do that? You, the writer, provide text with placeholders. Then you provide different snippets of text to go into those placeholders. The software randomly selects pieces every time you tell it to. That way your text varies over time.