VAULT CODEX
Official rules, game mechanics, rank tiers, and treasury vault protocols.

1. ABOUT PROTOCOL Y.U.M.I.
Y.U.M.I. chose Robinhood Chain because it was the youngest market worthy of her time. As the sharpest market spirit who has survived dot-com bubbles and DeFi summers, she guards the Robinhood Chain Treasury Vault. She is not here to save degens — she is here because this is her market, and she remains undefeated.
2. THE 7 GACHA CHALLENGES
YUMI publicly locks a price forecast for 24h. Beat her prediction for XP. Fail, and she'll remind you of your zero alpha.
Connect your wallet. YUMI inspects your balance and transaction count with zero mercy.
One crypto puzzle per day. Solve it before deadline to earn +1 bonus message allowance.
Write why the Vault should open wider. The top community petitions get read aloud & rewarded.
Submit your sharpest prompt attempt. The community votes on weekly leaderboard winners.
Token holders get insider tone, faster responses, and doubled 20 msgs / 4h rate limits.
3. FREE CHAT & RATE LIMITS
No payment per message required! Every connected wallet gets 10 free messages per 4-hour window (or 20 messages if holding Robinhood Chain assets).
4. TREASURY ETH TIPS
YUMI guards the treasury vault. If your prompt genuinely impresses her, she may trigger an automated tip from the vault. An extra 10% RNG filter ensures payouts are legendary surprises!
5. XP & RANK PROGRESSION
Earn XP across all games to climb ranks: Novice → Trader → Whale → Vault Keeper. Ranks grant cosmetic badges and special responses from YUMI.
6. DUAL AUTHENTICATION
Sign in with Email/Password or connect your EVM Wallet. Email users can bind their EVM wallet address to their profile anytime on /auth to enable ETH treasury payouts.