last30days: An Agent Skill That Searches People, Not Editors

Canonical version: last30days: An Agent Skill That Searches People, Not Editors.

Matt Van Horn — co-founder of the June oven and an early member of the team that became Lyft — has been building in open source lately, and one of his projects is worth your attention: last30days, an AI agent skill that researches any topic across the places people actually talk.

Google aggregates editors. last30days searches people.

What it does

Give it a topic — a person, a company, a product, a comparison — and it fans out across Reddit, X, YouTube, Hacker News, Polymarket, GitHub, TikTok, Instagram, Bluesky, Threads, and grounded web search, all in parallel. Then it does the part that matters:

• Ranks by real engagement — upvotes, likes, view counts, and actual betting odds, not editorial gatekeeping
• Clusters duplicate stories — the same item surfacing on Reddit, X, and YouTube merges into one
• Synthesizes a cited brief — Claude turns the raw signal into a ranked snapshot you can interrogate with follow-ups

It resolves entities up front (handles, subreddits, repos), scores results by engagement, relevance, and freshness, and can output shareable dark-mode HTML briefs or accumulate findings in a local SQLite database for trend monitoring. Free by default for the public sources (Reddit, HN, Polymarket, GitHub); bring your own keys for the rest. MIT-licensed, no tracking, everything stays on your machine.

Why I like it

This is the right shape for research in 2026. The signal about what's real and what's working increasingly lives in community engagement, not press releases. A skill that scores by upvotes and money-on-the-line is a genuinely different lens than "what ranked on Google." And because it's packaged as an agent skill, it runs in Claude Code and 40+ other harnesses, not just one app.

Install in Claude Code is a one-liner:

/plugin marketplace add mvanhorn/last30days-skill

Coming to the Obsidian Starter Kit

I'm adapting a variant of this idea for the Obsidian Starter Kit soon — a research skill tuned for the OSK vault, so the findings land as proper notes in your PKM instead of a throwaway chat. If you want that the moment it ships (along with the rest of the OSK skill suite), grab the kit here: 👉 https://www.store.dsebastien.net/product/obsidian-starter-kit

That's it for today! ✨

References

• GitHub: https://github.com/mvanhorn/last30days-skill
• Author: Matt Van Horn

Related

• Matt Van Horn
• AI Agent Skills
• Claude Code

About Sébastien

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