# Greg's Magic MegaPrompter™

**URL:** <https://replit.discourse.group/t/gregs-magic-megaprompter/4468>\
**Category:** Showcase\
**Tags:** agent\
**Created:** [May 7, 2025, 1:40am UTC](https://replit.discourse.group/t/gregs-magic-megaprompter/4468 "2025-05-07T01:40:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![gregjagiello](https://yyz2.discourse-cdn.com/flex010/user_avatar/replit.discourse.group/gregjagiello/32/1242_2.png) [@gregjagiello](https://replit.discourse.group/u/gregjagiello)\
**Post date:** [May 7, 2025, 1:40am UTC](https://replit.discourse.group/t/gregs-magic-megaprompter/4468/1 "2025-05-07T01:40:16Z")

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100% no code #vibeCode project using Agent, includes user auth for reg/login, database for storage. Patience and checkpoints got me here:

[https://gregs-magic-megaprompter.replit.app/](https://gregs-magic-megaprompter.replit.app/)

 ![gmm](https://canada1.discourse-cdn.com/flex010/uploads/replit/original/2X/7/74a862458a707d01b924e222c6b35a8a27226846.jpeg)

From the main page:

_Create and manage LLM-agnostic prompts and megaprompts. Compare performance across different AI models without vendor lock-in._

_Create! Vendor-neutral prompts_  
_Compare! Test across different LLMs_  
_Combine! Build powerful megaprompts_

_The ultimate tool for prompt engineers who work with multiple AI models and want to maintain a unified prompt library._

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**Author:** ![gregjagiello](https://yyz2.discourse-cdn.com/flex010/user_avatar/replit.discourse.group/gregjagiello/32/1242_2.png) [@gregjagiello](https://replit.discourse.group/u/gregjagiello)\
**Post date:** [May 30, 2025, 3:59pm UTC](https://replit.discourse.group/t/gregs-magic-megaprompter/4468/2 "2025-05-30T15:59:05Z")

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Now with username registration instead of email, and a new prompt improver feature I’m very stoked about!

 ![image](https://canada1.discourse-cdn.com/flex010/uploads/replit/original/2X/4/41ca2257e4fb81eb7c99acec45f39b28485853f3.jpeg)

Still 100% no code, all text prompts. Thanks for looking.

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**Author:** ![pmz](https://yyz2.discourse-cdn.com/flex010/user_avatar/replit.discourse.group/pmz/32/381_2.png) [@pmz](https://replit.discourse.group/u/pmz)\
**Post date:** [May 31, 2025, 3:08pm UTC](https://replit.discourse.group/t/gregs-magic-megaprompter/4468/3 "2025-05-31T15:08:08Z")

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Cool idea. How did you think about the system prompt setup? Did you code it through Replit on use the console for the AI model you used?

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**Author:** ![gregjagiello](https://yyz2.discourse-cdn.com/flex010/user_avatar/replit.discourse.group/gregjagiello/32/1242_2.png) [@gregjagiello](https://replit.discourse.group/u/gregjagiello)\
**Post date:** [May 31, 2025, 4:29pm UTC](https://replit.discourse.group/t/gregs-magic-megaprompter/4468/4 "2025-05-31T16:29:59Z")

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Hey PMZ, thanks! The whole app was coded through Replit Agent and Assistant. I use ALL THE MODELS so this was my solution for flexibility across all, so it’s not fine tuned for any specific model currently. The improver feature uses Claude API.

I did have a pretty cool Chrome extension which was connected to Claude via API that would paste prompts in directly to the prompt field, but I broke it when adding user accounts and haven’t tried to fix it yet. Not sure if that answers your question, I apprecaite you asking and thanks.