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How to build a prompt library

You get a simple prompt library: one document of your best prompts, each with a name, placeholders, and a note on when to use it. It takes about 15 minutes with any free AI tool and a notes app. You save each prompt that works and reuse it instead of retyping.

Time: 15 min
Tool: Any AI tool (free)
Type: Prompt
Difficulty: Medium
Last tested: Not tested yet

Draft: we have not tested this recipe yet. Treat the steps as a starting point.

What you need

Any free AI tool you already use
A notes app or document you can open quickly
Two or three prompts that gave you good results

Copy this prompt

Turn the prompt below into a reusable template for my prompt library.
Replace anything specific (names, prices, dates) with placeholders in [square brackets].
Give it a short name, one line on when to use it, and a list of the placeholders I need to fill in.
Keep the prompt itself unchanged otherwise.

Prompt: [paste a prompt that worked well]

Steps

Pick the 3 prompts you reuse most, such as your price reply, review reply, or reminder.
Run each through the prompt above to turn it into a template.
Paste the 3 templates into one note. Add the name and a “use when” line above each.
Add a new template whenever a prompt works well. Delete ones you stop using.

Test it yourself (10 minutes)

Take any prompt from another recipe on this site and run it through the template prompt.
Fill in the placeholders for a made-up business and run the result.
Check that the output matches what the original prompt gave you.
Note what you changed. It shows whether your template kept everything the original had.

Check this yourself