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Welcome to Prompty

Prompty turns prompt engineering into a craft you can actually practice. This is your guide to the platform, its building blocks, and everything you can do with them.

1. What is Prompty

Prompty is a structured prompt builder for large language models. Instead of starting with a blank textarea every time you talk to an AI, you assemble prompts from reusable parts: a task, a persona for the model, the tones you want, an output format, and any constraints that matter. Prompty stitches these parts into a single, consistent prompt and lets you save, version, and share it.

The goal is simple. Treat prompts the way you treat code: with structure, history, and a community to learn from. When a prompt stops working, you can find the exact version that worked last week. When a teammate writes a great persona, you can build on it rather than rewriting it. When you want to ship the same instructions to every thread, you can reach for a saved prompt instead of copy-pasting paragraphs of text.

2. Who it is for

Prompty is built for anyone who writes prompts more than once a week and wants to stop starting from scratch.

  • Writers and marketers who need a consistent voice across many prompts and want to maintain a library of tones and output formats they trust.
  • Developers and product builders who prototype LLM features and want to track what they tried, what worked, and why a version changed.
  • Researchers and analysts who need reproducible, documented prompts they can return to months later without guesswork.
  • Teams who are standardizing how they talk to AI across a product, a company, or a classroom.

You do not need to be technical to get started. If you have ever written a prompt and wished you could reuse a good line next time, Prompty is built for you.

3. The core idea

Every prompt in Prompty is assembled from five building blocks plus a composite that holds them together:

  • Task - what you want the model to do.
  • Persona - the role or perspective the model should adopt.
  • Tone - the emotional and stylistic qualities of the response.
  • Output - the shape and format of the answer.
  • Constraints - the rules and limits the response must respect.
  • Prompt - the composite that combines the five above into one saved, versioned artifact.

Each building block can be created once and reused everywhere. Make your tones library once, then pick from it on every future prompt. Write a persona that works well and every prompt you save can point at it. When you improve the persona later, your history stays intact: older prompts keep the exact text they had the day you saved them.

If you want the full reference for each block, including character limits and visibility defaults, head to the Building Blocks page.

4. Getting started

You can try Prompty immediately without signing in. Saving, versioning, and community features require an account.

  1. Open the builder. Go to the home page. The builder is the first thing you see.
  2. Fill in your task. Write what you want the model to do. If you are not sure how to phrase it, type a rough draft and use the Improve button to tighten it.
  3. Pick or create your building blocks. Work through the Persona, Tone, Output, and Constraints sections. You can leave any of them empty. You can also browse public blocks created by the community to avoid starting from scratch.
  4. Copy or save. The final section shows your compiled prompt. Copy it into your AI tool of choice, or sign in to save it. Saved prompts can be edited, versioned, shared, and made public.

No sign-in required to try it

You can build, compile, and copy a prompt without an account. Sign in only when you want to save it, vote on community work, or use the Improve button.

5. The six sections of the builder

The builder guides you through six collapsable sections, one at a time. Only one section is open at any moment; clicking Continue closes the current section and opens the next.

  1. Task - your main instruction. Up to 10,000 characters. Ships with an Improve button that rewrites your task with AI.
  2. Persona - the role or perspective the model adopts. Optional. Choose from your own, the community, or write one inline.
  3. Tone - select one or more tones. Optional. Shown as pills you can toggle on and off.
  4. Output - pick a single output format. Optional.
  5. Constraints - pick any number of constraints. Optional.
  6. Prompt - the read-only compiled result, with buttons to copy, improve, and save.

Each of the four building-block sections (Persona, Tone, Output, Constraints) lets you filter between the items you created (Custom), items the community published (Public), and items you saved as favorites (Favourites), or view everything together with All. You can search, filter, and create new items inline without leaving the builder.

6. Where to go next

  • Building Blocks - Deep reference for each of the five blocks, how they combine, and why snapshots matter.
  • Your Library - How the dashboard works: creating, editing, voting, favoriting, versioning, and sharing.
  • Tiers & Access - Subscription tiers, limits, the browser extension, and API access.
  • API Documentation - The endpoint-by-endpoint reference for the Prompty REST API.