Writing good AI prompts from scratch is hard. The difference between a mediocre prompt and an excellent one can be 10x better output. Instead of reinventing the wheel, use community prompt libraries where experts have already crafted and refined prompts for virtually every use case.
These libraries are like having cheat codes for AI—copy, paste, customize, and get dramatically better results.
Top Prompt Libraries
FlowGPT
The largest community of AI prompts with categories for writing, coding, marketing, roleplay, productivity, and more. Prompts are rated and reviewed by users.
- Free to browse and use
- Filter by category, rating, and popularity
- Many prompts include examples of output
Awesome ChatGPT Prompts (GitHub)
A curated GitHub repository of "act as" prompts—make the AI act as a specific expert persona.
- Act as a Linux terminal
- Act as a plagiarism checker
- Act as a startup tech lawyer
- Hundreds more specialized personas
PromptBase
Marketplace where people sell premium prompts. Quality tends to be higher since creators have financial incentive to make them excellent.
ShareGPT
See actual conversations others have had with AI. Great for learning prompting techniques by example.
Prompts by Category
Writing & Content
- Blog post outlines and drafts
- Email templates for any situation
- Social media content calendars
- Product descriptions that sell
- Resume and cover letter optimizers
Coding & Development
- Code review and improvement
- Bug explanation and fixing
- Documentation generation
- Test case creation
- Regex pattern generation
Business & Marketing
- Market research frameworks
- Competitor analysis
- Sales email sequences
- Ad copy variations
- Customer persona development
Learning & Education
- Explain like I'm 5 (ELI5)
- Socratic questioning for deep understanding
- Quiz and flashcard generation
- Study plan creation
- Complex topic simplification
💡 Pro Tip: Save Your Winners
When you find a prompt that works exceptionally well, save it in a personal document or note app. Build your own curated library of prompts you've tested and refined.
How to Customize Library Prompts
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Start with a Base Prompt
Find a prompt close to your needs. Don't expect a perfect match—80% fit is good enough to start.
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Add Your Context
Fill in the variables: your industry, audience, specific requirements, constraints, and preferences.
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Specify Format
Add format instructions: "Respond in bullet points," "Keep it under 200 words," "Use markdown headers."
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Iterate Based on Output
If the first result isn't perfect, add clarifications. "More concise," "More formal tone," "Focus on X aspect."
Example Power Prompts
The Mega-Prompt Structure
You are a [ROLE] with [EXPERIENCE/EXPERTISE].
Your task is to [SPECIFIC TASK].
Context:
- [Relevant background]
- [Constraints]
- [Audience]
Please provide:
1. [First deliverable]
2. [Second deliverable]
3. [Third deliverable]
Format: [Specify format]
Tone: [Specify tone]
Length: [Specify length]The Iterative Refinement Prompt
Generate 5 different versions of [X].
For each version, vary the:
- Tone (casual to formal)
- Length (brief to detailed)
- Angle (different perspectives)
After generating all 5, analyze which works best for [goal] and explain why.The Expert Critique Prompt
Act as a senior [PROFESSION] with 20 years of experience.
Review the following [CONTENT TYPE]:
[Paste your content]
Provide:
1. Three specific strengths
2. Three specific weaknesses
3. Concrete suggestions for improvement
4. A rating from 1-10 with justification⚠️ Always Review Library Prompts
Not all shared prompts are good or ethical. Some may attempt prompt injection or produce biased outputs. Always read a prompt before using it and test with non-sensitive content first.
Building Your Personal Library
Organization System
- Notion database: Tags, categories, and ratings for each prompt
- Text expander: Assign shortcuts to frequently-used prompts
- GitHub Gist: Version control for prompts you iterate on
- Dedicated note: Simple Apple Notes or Google Doc with headers
What to Track
- The prompt itself
- What AI it works best with (GPT-4, Claude, etc.)
- What task it's for
- Rating/notes on effectiveness
- Date last used/updated
Conclusion
Don't reinvent prompt engineering from scratch. Stand on the shoulders of the community—use prompt libraries to find starting points, then customize and refine for your specific needs.
Start by browsing FlowGPT or Awesome ChatGPT Prompts, find 5-10 prompts relevant to your work, and save them somewhere accessible. The time you save on prompt crafting pays for itself immediately.