Bracket Builder

What it does

Use it to build March Madness (NCAA tournament) brackets at an expert level, covering pool size and scoring systems, picking a champion and Final Four, using team strength ratings, choosing upsets with leverage, public pick percentages and contrarian strategy, multiple-bracket portfolios, and seed history.

Try it now

After you install, paste one of these into Claude.

• Who should I pick to win it all in a 50-person pool?Copy prompt
• Which 12-5 upsets should I take?Copy prompt
• How do I make 3 different brackets?Copy prompt

How it works

A skill is a set of expert instructions Claude loads whenever you ask about your team. It pins down your league's exact rules first, checks current news when it can, then makes the call.

Install in a minute

1. Download the ZIP from the link in your email. Don't unzip it: Claude wants the ZIP as it is.
2. Open Skills in Claude. On claude.ai or the desktop app, open Customize, then Skills. On some versions it's under Settings, Capabilities, Skills.
3. Upload it. Click +, choose Create skill, then Upload a skill, and pick the ZIP. One ZIP per upload.
4. Check it's on. The skill should show as enabled. Skills work on any Claude plan, including the free one. Just turn on code execution in Settings, Capabilities.
5. Start a new chat and ask about your team, for example "Help me set my lineup this week." Claude loads the skill on its own when it's relevant.

Full guide, Claude Code steps and troubleshooting: Install guide.

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