There's a free skill called Last 30 Days that feeds Claude only the most recent month of internet results before it answers, so you get what people are actually saying right now instead of facts that are a year old.
Here's a thing most people don't know about AI. Every model has a knowledge cutoff. That's the date its training stopped. Ask it about anything that happened after that date and it doesn't say "I'm not sure." It guesses, and it sounds completely confident while it does it. So for anything recent, a new product, a breaking story, what's trending this week, it can hand you info that's a year old like it's the truth.
A free skill called Last 30 Days fixes this. You give it any topic, and instead of answering from old memory, it goes out and searches a pile of sources, but only the last 30 days of results. Then it feeds those fresh results into Claude before Claude writes a single word. So your answer is built on what people are saying right now, this month, not last year. It was built by mvanhorn, and you turn it on by typing /last30days.
Think of the AI's memory like a book that got printed and then never updated. Everything in it was true when it was printed. But the world kept moving. Prices changed. New tools launched. Opinions flipped. The book has no idea.
When you ask about something current, the model still wants to be helpful, so it answers from that old book. It won't always warn you. That's how you end up acting on a price, a feature, or a "best pick" that quietly stopped being true months ago.
Last 30 Days closes that gap. It pulls in only the newest results and hands them to Claude as fresh notes to read first. The answer comes from this month, not from the old book.
The simple version
Normal Claude answers from memory. Last 30 Days makes Claude go read the newest results first, then answer. That one change is the whole point.
When you run it, the skill can pull fresh results from a lot of places at once, all filtered to the last 30 days:
Reddit (with the top comments scored by upvotes, so you see what people agreed with), X / Twitter, YouTube (it can read full video transcripts, not just titles), TikTok, Instagram Reels, Threads, Pinterest, Bluesky, Hacker News, Polymarket (real prediction-market odds on what people think will happen), GitHub, an optional Perplexity web search, and general web results.
That's a wide net. You get regular people on Reddit, the news crowd on Hacker News, the trend crowd on TikTok and Reels, and even betting odds, all from the last month.
Free to start
The core sources are free: Reddit, Hacker News, Polymarket, and GitHub work right out of the box. Some sources need a free or paid API key to unlock: X, YouTube, and the social platforms run through ScrapeCreators, Perplexity runs through OpenRouter, and web search runs through Brave Search. You can start free today and add keys later only if you want the extra sources.
Pick the one that matches how you use AI. Both are one line. Copy it, paste it, run it.
Option A
If You Use Claude Code
This adds Last 30 Days as a plugin inside Claude Code. Open Claude Code, paste the line below, and hit enter. After it installs, you can type /last30days any time.
Copy this command
/plugin marketplace add mvanhorn/last30days-skill
Option B
If You Use Other AI Editors
This works across 50+ AI editors. Paste this in your terminal and run it. The -g at the end installs it globally, so it's available everywhere, not just in one project.
Copy this command
npx skills add mvanhorn/last30days-skill -g
Not sure which to pick
If you already use Claude Code, use Option A. If you use a different AI coding tool, use Option B. Either way you end up with the same skill and the same /last30days command.
Once it's installed, using it is dead simple. You type /last30days and then your topic. That's it. Copy the example below and swap in whatever you care about.
The pattern is: /last30days then your topic. Be as plain or as specific as you want. The more specific your topic, the sharper the fresh results it brings back.
Copy this command
/last30days best budget laptop for students
More example topics you can try the same way:
• /last30days is anyone actually canceling Netflix this month
• /last30days new AI tools people are loving right now
• /last30days honest reviews of the new iPhone
• /last30days what's trending on TikTok this week for small businesses
Use Case 1
Before You Buy Something
About to spend money on a product? Run it first. You'll see what real people said this month, not a glowing review from two years ago that's now wrong. Catch the "it broke after 3 weeks" posts before you buy, not after.
Use Case 2
Before A Big Decision
Picking a tool, a platform, a service, or a direction for your business? Get the current lay of the land first. Prediction-market odds and fresh Reddit threads tell you where things are heading right now, so you're not betting on last year's situation.
Use Case 3
Before You Post On Social
Want to ride a trend? You have to know what's actually trending today, not last season. Run it on your niche and see what's hot across TikTok, Reels, and X this week, then post into the conversation that's already happening.
Use Case 4
For Research And News You Need Current
Any time the answer changes fast, like prices, releases, breaking stories, or "what's the latest on..." questions, this is the move. You get a current snapshot built from the newest results instead of a confident guess from old memory.
Honest note
The free core sources (Reddit, Hacker News, Polymarket, GitHub) already cover a ton, so start there and don't pay for anything yet. Only add API keys later when you specifically want the social platforms like TikTok and Reels, or full web search. Free first, upgrade only if you need it.
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