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What is MANTIS

MANTIS is a probability-first prediction market app. You express conviction by trading YES or NO shares on real-world questions.

How to trade

• Open a market and read the rules + source section first.
• Choose BUY or SELL and then YES or NO.
• Enter amount, check the inline summary, then execute with one CTA.
• Track position, cash, and updates from Portfolio and Notifications.

What odds/probability mean

Displayed probability is the market-implied chance for YES. Example: 64% means the current market is pricing roughly a 64% chance of YES and 36% for NO.

Probabilities move as people trade. They are signals, not guarantees.

How markets resolve

• Each market has a primary source and fallback source.
• At close, trading stops. Then outcome is resolved as YES, NO, or VOID.
• Settlement applies payouts/refunds based on the final outcome.
• Resolution evidence is visible in market detail for transparency.

Risk notes

• Use position sizing. Do not over-concentrate in one market.
• Requote when price impact is high or quote expires.
• Read void rules before entering size.

About this environment

This is a paper-trading alpha environment for product testing and UX validation. No real-money transfer is performed in this mode.

Feedback

Help us improve onboarding, trading clarity, and reliability. Share friction points after your first trade.

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