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Build in 48 hours. Ship your repo.

Weekly AI coding battles for builders who would rather ship than talk about shipping.

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Tight Format

A new challenge drops every week. You get 48 hours to build with AI and submit one public repo.

Structured Competition

Public repos, hard deadlines, and a live gallery make this feel like a real contest instead of another builder feed.

Active Battle

Challenge #1: Second Brain

## Theme Second Brain ## Prompt Build something that acts like a **second brain**. This could help you remember things, organize thoughts, surface forgotten ideas, or make decisions. Interpret the theme however you want. Your project might: - remember things you forget - surface useful information at the right moment - connect ideas together - summarize your digital life - help you think through decisions - organize messy knowledge

Battle Window

Mar 13, 2026, 9:14 AM to Mar 15, 2026, 11:00 PM

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How It Works

A simple weekly loop

Small scope, public output, and a short deadline. That is the whole point.

A Challenge Drops

Every Thursday we post a new open-ended prompt.

You Have 48 Hours

Use whatever AI tools you like.

- Codex CLI
- Cursor
- OpenClaw
- local agents
- custom workflows

Build something small and interesting.

Submit Your Repo

Projects must be:

- public on GitHub
- open source
- created during the challenge window

Explore What Everyone Built

Every submission becomes part of the VibeBattles gallery.

See how others approached the problem, how they prompted AI, and what they shipped.

Give This To Your Agent To Get Started

Copy this into your coding agent and point it at the current challenge.

Build a small open source project for the current VibeBattles challenge.

Challenge markdown: https://www.vibebattles.ai/challenges/current.md
VibeBattles page: https://www.vibebattles.ai/

Constraints:
- ship within the challenge window
- use a public GitHub repo
- keep it open source
- include a short README with setup instructions

Build in 48 hours. Ship your repo.

Challenge #1: Second Brain

A simple weekly loop

A Challenge Drops

You Have 48 Hours

Submit Your Repo

Explore What Everyone Built

Current battle

Challenge #1: Second Brain