Prompt Builder

Open Source Modular Prompt Engineering for Developers

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March 25, 2025 Open Source - Modular Prompting Tool For Developers

First of all, as a Computer Science Undergrad and Lifetime Coder, let me tell you, Vibe-Coding is real. I write code all day and I probably edit the code manually under 5 times a day. HOWEVER, I find myself spending hours and hours creating prompts.

After a week or two of this I decided to build a simple tool that helps me create these massive prompts(I'm talking 20,000 characters average) much faster. It's built around the idea of 'Prompt Components' which are pieces of prompts that you can save in your local library and then drag and drop to create prompts.

There is also some built in formatting for these components that makes it super effective. When I tell you this changed my life...

Anyway, I figured I would make an effort to share it with the community. We already have a really small group of users but I really want to expand the base so that the community can improve it without me so I can use the better versions :)

Github: https://github.com/falktravis/Prompt-Builder

I also had some requests to make it an official chrome extension, so here it is: https://chromewebstore.google.com/detail/prompt-builder/jhelbegobcogkoepkcafkcpdlcjhdenh

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With the current capability of LLM's to generate code, the real bottleneck on my productivity in development was generating my massive prompts. I use this tool for an insane speed up in my prompting and better quality.