Free AI Prompt Library: Prompts That Work

By: Miimu Staff Last updated on October 25, 2026

The prompt that worked last month is usually gone by the time you need it again, buried somewhere in a chat history. A prompt library keeps it: a short list of prompts you trust, filed by job, each with the words to change marked.

Claude was asked to build one for someone who runs a small business and a side project, then to run two of the prompts on sample cases so you can see what comes back. All four pages are saved in one bundle, next to the prompting guides from OpenAI, Anthropic and Google.

View Bundle

THE RESEARCH BEHIND THIS GUIDEKeep this bundle. Every link and note, yours to edit.The bundle above holds all the research: 22 links in 4 sub-bundles, each with a note on why it's there. Import a free copy, then add your own finds, cut what you don't need and keep it where you'll find it again.

1Tap import, right above this box2Create a free account3The bundle lands in your account

The Prompt That Started It

One request that names the reader and asks for proof. Running two of the prompts on sample cases shows whether the prompts are any good.

Build me a prompt library I will actually reuse, for someone who runs a small business and a side project. Make each of these as its own separate artifact, and build every one as an HTML web page artifact (not a document) so anyone with the link can open it: 1) a library of 12 prompts filed by job (writing, research, images, code), each with when to use it, the two words to change, and a copy button; 2) one writing prompt from the library run on a real example, showing the prompt and the result; 3) one research prompt run the same way, with sources linked; 4) a one-page guide to writing a prompt that works the first time, with a before and after. Make reasonable assumptions instead of asking me questions.

The first miimu in the bundle links to the full chat, shared from Claude, so anyone can read what went in.

Take bundles everywhere with you

What Came Back

Four pages, each saved into the bundle as its own miimu.

The 12-prompt libraryThree prompts each for writing, research, images and code. Every one says when to use it, highlights the two words to change and has a copy button.

A writing prompt, runThe customer-reply prompt used on a delicate email about a gift that arrived broken and was needed by a deadline, showing what went in and the reply that came out.

A research prompt, runShopify or Squarespace for a small candle shop, researched with web search. Every price links to its source, and the gaps are named instead of guessed.

The one-page guideThe five parts of a prompt that works, in order: context, task, input, rules and output. A weak prompt and the fixed version sit side by side.

Make It Yours

Import the bundle. Tap import on the bundle above and register free. A copy of the bundle lands in your account, with links to the chat and every page.

Change the two words. Pick a prompt, swap in your own two words and paste the rest as it is.

Save what works. When a prompt earns its place, save the chat it worked in to the same bundle, with the prompt in the note.

Retire what doesn't. Move the saved chats for prompts you stop using to a sub-bundle of their own, so the main bundle stays short.

More real AI projects, each with a bundle you can import, are on Miimu's AI page.

Before you go

View Bundle

Keep this bundle: 22 links, 4 sub-bundles, free.

1Tap import ↑2Choose Register3It's in your account