Open-source Claude Code skills and plugins we think are worth your time. Every one is free, every one has a real write-up, and every page links straight to the GitHub repo.
An autonomous SDR that runs on your Claude subscription. Finds local businesses worth selling to, reads their sites, writes cold email that mentions something real, and works replies toward a meeting. Nothing sends until you approve it.
Read the review →Turn the thing you just built into a launch video. Run /brag inside any project and it reads what you made, picks the angle, and renders a 20-ish second launch video with a soundtrack and ready-to-post share copy.
Read the review →Audit any site for ChatGPT, Perplexity and AI Overviews. One command scores a website for AI citability, checks which AI crawlers it blocks, generates llms.txt and schema, and hands you a 0 to 100 GEO score with a PDF report.
Read the review →Clone a viral video into a workflow you can remix. Drop in a TikTok, Reel or ad and your agent rebuilds it as an editable composition: footage, word-timed captions, B-roll and effects. Swap the parts that change and render as many variants as you want.
Read the review →See a feature you like, find out how it's built. Connects your agent to Ghidra, Hopper, IDA, JADX and a browser so it can take apart native binaries, Electron and JavaScript apps, .NET, Android APKs and websites, then explain what it found and build your own version.
Read the review →Stop making your agent click through websites. Watches a site's own frontend make a request, learns which parts are your inputs, and saves it as an operation your agent calls over MCP. Plain HTTP, JSON back, and it re-learns itself when the site changes.
Read the review →We add new skills and plugins as we find good ones. Built something people should know about? Email epictools.io@gmail.com.
A skill is a folder of instructions that teaches your coding agent to do one job well. A plugin bundles skills, commands and agents so you can install them in one go. If the difference is fuzzy, our skills vs subagents vs slash commands explainer clears it up. For a wider list, see the best Claude Code skills and best Claude Code plugins roundups, and our guide to finding and vetting skills. Want to write your own? Run it through the free SKILL.md validator first.
Yes. Everything listed here is open source on GitHub, mostly under the MIT license. Some of them call paid services if you choose to (a paid data source, a hosted version), but the skill or plugin itself costs nothing.
Most are built for Claude Code first. Several also run in Codex, Cursor, opencode or Gemini CLI. Each page lists what it works with.
We read the repo, check that it's maintained, and only list things we'd actually point a friend to. We don't take payment for listings.
A skill can run commands on your machine, so treat it like any other code. Read the SKILL.md and any install script first. Our guide to installing Claude skills from GitHub walks through what to check.
The free picks above each do one thing. AgentsKit installs 89 agents, 122 skills and 181 commands for engineering and marketing in one command.