AI building block suggestions, explained

Prompty's builder watches the task you type and suggests building blocks that fit it. This guide explains where those suggestions come from, how they adapt to you, and exactly what data is stored along the way.

What happens as you type

Once your task is about twenty characters long, the builder starts matching it against building blocks. A short pause after you stop typing, and suggested personas, tones, output formats, and constraints appear in their sections, already applied and marked with a sparkle icon. Nothing is locked in: every suggestion is a normal selection you can toggle off.

Where suggestions come from

Suggestions are real building blocks, not generated text. Prompty searches the public community library and, when you are signed in, your own private blocks. Candidates are ranked by how closely their meaning matches your task, then a final quality filter picks the best few: one persona, one output format, a handful of tones and constraints, and matching collections.

How it adapts to you

When you are signed in, the builder learns from two signals. Remove a suggested block and it stops suggesting that block for similar tasks. Add a block yourself that was not suggested and it favors that block for similar tasks. Keeping a suggestion teaches it nothing on its own, since suggestions are applied automatically. Learning is scoped to similar tasks, so removing a playful tone from a legal brief does not affect your social posts.

Signed in or signed out

Anonymous visitors get the same live suggestions in the builder, with a slightly lower request allowance. Only the adaptation requires an account, since there is nothing to adapt without one. Either way the feature is free and unmetered: it never counts against the monthly AI improvements quota on any plan.

What is stored, and what is not

Prompty does not store the text of your task for this feature. It stores a numerical representation of the task (an embedding), a record of which blocks it suggested, and your removal or addition signals. That data is capped, gets pruned or replaced over time, and is deleted with your account. You can also wipe it on demand: Settings has a Clear AI suggestion learning control that resets the adaptation without touching anything else. To compute suggestions, your task text is sent transiently to our AI provider, OpenRouter.

Where it works

AI suggestions are a feature of the Prompty web builder only. The REST API, the @prompty-tools/core npm package, the MCP server, and the browser extension give you access to your library, but none of them include the suggestion engine.

Try it

Type a task into the prompt builder and watch the suggestions arrive, or read prompt building blocks, explained to see what each block does.