Why do most AI prompts stop working after a few months?
AI tools update constantly. What worked in a prompt six months ago may produce weaker results today — or nothing useful at all. Most prompt libraries online are already outdated by the time you find them.
The people who stay ahead aren't reading old blog posts. They're watching what real users are figuring out in Reddit threads and on X, right now.
What does this open-source tool actually do?
A developer built a Claude Code skill called last30days that scans Reddit and X for any topic you give it, then writes copy-paste-ready prompts based on what the community has discovered in the past 30 days.
You run a command like:
/last30days prompting techniques for ChatGPT for legal questionsIt comes back with the top patterns real users are applying right now, plus a fully written prompt you can drop straight into your tool of choice.
No digging through threads. No testing prompts that got patched out.
Who should use this?
This is useful for anyone who relies on AI tools in their marketing workflow:
- Content teams researching how to get better outputs from tools like ChatGPT or Claude
- Designers who want the latest Midjourney techniques before they go mainstream
- Music or audio creators using Suno who want to know what's actually producing good results
- Developers looking for fresh Cursor rules
- Marketers tracking trending topics or formats on Reddit and X before writing copy
The tool works across topics — it's not locked to AI prompts. If you want to know what people are genuinely saying about any niche right now, it can surface that.
How does staying current with community insights help your marketing?
According to Sprout Social's 2024 Social Media Index, 53% of consumers say social media is where they discover products and trends before anywhere else. The same logic applies to tactics: practitioners share what's working in public forums before it ever appears in a blog post or newsletter.
Scanning those conversations manually takes hours. A tool that automates this and outputs ready-to-use prompts cuts that to seconds.
This matters for marketing teams because:
- You write prompts grounded in what's working today, not last quarter
- You catch emerging techniques before competitors do
- You spend less time prompt-testing and more time producing
How do you get started?
- The project is open source under the MIT License — find the repo at
github.com/mvanhorn/last30days - Set it up with Claude Code
- Run
/last30days [your topic]to pull the latest patterns from Reddit and X - Review the output and drop the generated prompt directly into your AI tool
The MIT license means you can modify it, build on top of it, or adapt it for your specific workflow without restrictions.
If your team uses AI tools regularly, building this kind of current-awareness into your process is worth the setup time.