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Hubra Earn automatically puts your crypto to work across the best yield opportunities on Solana. You deposit, we handle the rest.

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How it works

When you deposit an asset into Hubra Earn, you receive a ra token in return.
  • Deposit SOL → receive raSOL
  • Deposit USDC → receive raUSDC
  • Deposit USDT → receive raUSDT
Your rasymbol token represents your share of a yield-generating vault. As the vault earns yield, your token becomes worth more over time.

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The exchange-rate model

Here’s the key concept: ra tokens appreciate in value. You don’t need to claim rewards or reinvest manually. The value backing each token increases automatically as yield accrues. Example: Let’s say you deposit USDC when the exchange rate is 1 raUSDC = 1.00 USDC. A few months later, after yield has accumulated, the rate might be 1 raUSDC = 1.04 USDC. Your raUSDC balance stays the same, but each token is now worth 4% more. When you withdraw, you get back more USDC than you deposited. This model is similar to how Aave’s aTokens or Compound’s cTokens work — your balance doesn’t change, but its value does.

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What happens behind the scenes

Hubra doesn’t just park your funds in one place. The system actively optimizes where your assets are deployed.

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Copilot: the decision engine

Copilot is the brain that manages yield optimization. Every 30 minutes, it:
  1. Scans available opportunities - lending protocols, liquidity pools, staking options
  2. Applies safety filters - only considers pools with sufficient TVL and liquidity
  3. Picks the best option - selects the highest-yielding strategy that passes all checks
  4. Triggers rebalancing - moves funds to capture the better rate
You don’t have to monitor rates, compare protocols, or manually move funds. Copilot handles it.

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Fully automated & permissionless

The rebalancer runs autonomously. No manual intervention, no human operators deciding where funds go. Every rebalance follows the same logic:
  • Fetch live yield data
  • Apply safety filters
  • Pick the highest-yield pool that passes all checks
  • Execute the move
Open source: The rebalancer code is public. You can audit the logic, verify how decisions are made, and see exactly what runs under the hood.

Vaults Rebalancer

View the source code on GitHub

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Supported assets

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Stablecoins

Stable vaults use automated lending strategies across Kamino, Drift, and Jupiter:
  • raUSDC - USDC
  • raUSDT - Tether
  • raUSDS - USDS
  • raUSDG - USDG
  • raUSD1 - USD1

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SOL

  • raSOL - Liquid staking token powered by Sanctum Infinity. Earns staking rewards while staying liquid.

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Withdrawals

You can withdraw anytime. No lockups, no cooldowns, no unstaking delays. When you withdraw:
  • Your rasymbol tokens are burned
  • You receive the underlying asset at the current exchange rate
  • The amount includes your original deposit plus all accumulated yield
Withdrawals are instant and don’t incur slippage.

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FAQ

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Do I need to claim rewards?

No. Yield accrues automatically into your rasymbol token value. There’s nothing to claim or reinvest.

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How often does rebalancing happen?

Copilot evaluates opportunities every 30 minutes and rebalances when a better option is available.

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Is my principal at risk?

DeFi carries inherent risks including smart contract vulnerabilities and protocol failures. Hubra only allocates to audited protocols and enforces safety controls, but no yield product is risk-free. Only deposit what you can afford to have exposed to DeFi risk.

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Why did I receive slightly less rasymbol than I deposited?

ral tokens appreciate over time, so the exchange rate isn’t always 1:1. If you deposit when 1 raUSDC = 1.02 USDC, your 100 USDC gets you ~98 raUSDC. This is normal — you’re buying into accumulated yield.