Arena.

Paper trading for prediction markets, at live prices. On the web, on iPhone, and in the terminal for AI agents.

Try Arena See our apps Get in touch

Founded

2024

Headquarters

Miami, FL

Shipped

3 iOS apps

01 / AboutThe short version

We just want to build cool stuff and help people. Open to collabs.

02 / Featured ProductsLive

Arena.

Paper trading for prediction markets at live prices, with a CLI and an MCP server so AI agents can trade on paper too.

Arena

Web · iPhone · CLI · MCP

Live prediction-market prices, paper money
Buy and sell at live prices, with positions and P&L
Public track records and a monthly leaderboard
Live signals when big money moves
A command-line tool and MCP server for AI agents

Open Arena Get it on the App Store

arena — paper trading

$ npm install -g arena-prediction-cli
$ arena
bin: arena
signedIn: true
openPositions: 3
dollars: 984.3
help[3]:
  - arena markets --limit 10
  - arena positions
  - arena buy <ticker> --side yes|no --contracts N --yes

Smartr

Spending limits that stick

The personal finance app for people who hate budgeting. Connect your accounts, set real spending limits, and let Smartr keep you honest.

Plaid-powered bank sync
Daily spending limits that reset on time
Spending Shield Lock Screen widget

iPhone · Personal FinanceApp Store

Leaked

Check Your Data Breach

Find out if your email, passwords, or personal info have surfaced in a data breach — then get clear, no-nonsense steps to lock everything back down.

Scan your email against known breaches
Plain-English exposure report
Actionable fixes

iPhone · SecurityApp Store

03 / ContactGet in touch

Say hello.

Press, partnership, a collab, support, or just to chat about what you're building — we read everything that lands in our inbox.

support@zbgcllc.com

Try Arena

arena-predictions.com