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Blend’s automation is guided by a clear framework designed to manage risk and optimize for sustainable yield.

Permissioned Markets Policy

  • Target Utilization: Maintain ~80% utilization (within a 75-85% band) to balance borrow APR and supply yield.
  • Stability Halts: New deposits are paused if the borrow curve becomes unstable or utilization cannot be maintained.

Reserve Policy

  • Dynamic Sizing: The reserve size is adjusted dynamically based on utilization volatility and loop flow imbalance.
  • Coverage: The reserve must cover user redemptions, rebalancing liquidity under stress, and flash loan capacity.

Rebalance Policy

  • As-Needed: Rebalances are triggered when a live allocation deviates from its ideal weight by at least 1-3%.
  • Gas-Aware: Execution only occurs if the expected APY improvement exceeds the amortized gas and slippage costs.
  • Batching: Multiple small deviations are batched to improve gas efficiency.
This framework provides predictable, rule-based automation, removing emotion and maximizing efficiency within defined safety constraints.
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