VAEA Flash SDK (Rust)

Universal Flash Loan SDK for Solana — Borrow any SPL token atomically in one call.

Features

• 83+ tokens — SOL, USDC, JitoSOL, mSOL, JUP, and 78 more
• 3 protocols — Marginfi, Kamino, Jupiter Lend
• Smart Router (VTE) — Automatically finds cheapest route
• Local Builder — Build instructions in <0.1ms, zero HTTP
• Jito Bundle — Native MEV protection support
• Profitability Check — Verify profit before execution
• Multi-token — Atomic multi-asset flash loans

Quick Start

[dependencies]
vaea-flash-sdk = "0.1"

use vaea_flash_sdk::{VaeaFlash, BorrowParams};
use solana_sdk::signature::Keypair;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let payer = Keypair::new();
    let flash = VaeaFlash::with_rpc(
        "https://api.vaea.fi",
        "https://api.mainnet-beta.solana.com",
        &payer,
    )?;

    // Check available liquidity
    let capacity = flash.get_capacity().await?;
    let sol = capacity.tokens.iter().find(|t| t.symbol == "SOL").unwrap();
    println!("SOL available: {} ({})", sol.max_amount, sol.source_protocol);

    // Get a quote
    let quote = flash.get_quote("SOL", 1000.0).await?;
    println!("Fee: {}% ({} SOL)", quote.fee_breakdown.total_fee_pct, quote.fee_breakdown.total_fee_sol);

    // Build flash loan instructions
    let ixs = flash.borrow(&BorrowParams {
        token: "SOL".to_string(),
        amount: 1000.0,
        instructions: vec![/* your arb instructions */],
        slippage_bps: None,
        max_fee_bps: Some(5), // 0.05% max fee guard
    }).await?;

    println!("Built {} instructions", ixs.len());
    Ok(())
}

Zero-HTTP Local Builder

For latency-critical bots, build instructions in <0.1ms with zero network calls:

use vaea_flash_sdk::{localBuild, LocalBuildParams, FlashTier, syncRegistry};

// Sync token registry once at startup
sync_registry(None).await;

// Build locally — 0.1ms, no HTTP
let result = local_build(LocalBuildParams {
    payer: wallet.pubkey(),
    token: "SOL".into(),
    amount: 1000.0,
    tier: FlashTier::Sdk,
})?;

// result.begin_flash + [your IXs] + result.end_flash

API Methods

License

MIT — see LICENSE