Routing & Routes

How VAEA Flash routes your borrow request through lending protocols and swap providers to deliver any token.

How Routing Works

text

flash.executeLocal({ token: 'mSOL', amount: 5000 })
       ↓
1. Is mSOL a direct route token?
   → Check Marginfi: NO  →  Check Kamino: NO  →  Check Save: NO
       ↓
2. Use synthetic route:
   → Borrow SOL from Marginfi (cheapest, deepest liquidity)
   → Swap SOL → mSOL via Sanctum (~0.03% cost)
   → Execute your logic with mSOL
   → Swap mSOL → SOL via Sanctum
   → Repay SOL + VAEA fee to Marginfi

Protocol Priority

Priority	Protocol	Strengths
1st	Marginfi	Deepest liquidity for SOL, USDC, USDT — lowest borrow cost
2nd	Kamino	Best for cbBTC, JLP — alternative liquidity for SOL/USDC
3rd	Save (Solend)	Fallback for major tokens when others are at capacity

Fallback is automatic and transparent — you don't specify which protocol to use. If Marginfi is at capacity, VAEA silently falls back to Kamino, then Save.

Swap Providers

Provider	Used For	Typical Slippage
Sanctum	LSTs (mSOL, bSOL, INF, laineSOL)	~0.03%
Jupiter	Everything else (BONK, TRUMP, PENGU…)	~0.05–0.12%

ℹ️ Note

Sanctum is preferred for LSTs because it offers stake account routing with near-zero slippage.

Fallback Behavior

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Request: Borrow 10,000 SOL
  ↓
Marginfi: 8,000 SOL available → NOT ENOUGH
  ↓ fallback
Kamino: 15,000 SOL available → ✓
  ↓
Borrow 10,000 SOL from Kamino

💡 Tip

You can force a specific source with source: 'kamino' in the options, but auto-routing handles 99% of cases optimally.