@1826/woofi Zero Slippage

WOOFi Zero-Slippage Swap Optimizer

Optimize token swaps with zero/near-zero slippage using WOOFi's sPMM (Synthetic Proactive Market Making) algorithm across 12+ EVM chains.

What is WOOFi?

WOOFi uses Synthetic Proactive Market Making (sPMM) to simulate CEX-style orderbooks on-chain:

• Near-zero slippage for most trades
• Tighter spreads matching CEX prices
• Deeper liquidity through synthetic orderbook simulation

Supported Chains

Tools

woofi_query_swap

Query optimal swap amount with zero slippage estimation.

Parameters: chain, from_token, to_token, amount (wei) Returns: to_amount, price_impact, route, gas_estimate

woofi_get_supported_tokens

Get all supported tokens on a chain.

Parameters: chain Returns: quote_token, base_tokens[]

woofi_calculate_slippage

Calculate expected slippage for swap size.

Parameters: chain, from_token, to_token, amount, tolerance (bps, default 50) Returns: expected_slippage (bps), min_output, is_zero_slippage

woofi_build_swap_transaction

Build swap transaction ready for signing.

Parameters: chain, from_token, to_token, amount, slippage_bps, recipient, use_router (default true) Returns: to, data, value, gas_limit, min_output

woofi_compare_routes

Compare WOOFi vs traditional AMM for best execution.

Parameters: chain, from_token, to_token, amount Returns: woofi_output, amm_output, savings, savings_usd, recommendation

Usage Examples

Query Zero-Slippage Swap

quote = woofi_query_swap(
    chain="base",
    from_token="0x4200000000000000000000000000000000000006",
    to_token="0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    amount="1000000000000000000"
)

Build and Execute Swap

tx = woofi_build_swap_transaction(
    chain="arbitrum",
    from_token="native",
    to_token="0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8",
    amount="1000000000000000000",
    slippage_bps=50,
    recipient="0xYourAddress"
)
tx_hash = wallet_transfer(to=tx["to"], amount=tx["value"], data=tx["data"], chain_id=42161)

How sPMM Achieves Zero Slippage

Traditional AMM (x*y=k): Price moves against trader, slippage scales quadratically

WOOFi sPMM:

1. Synthetic oracle pricing from WOO Oracle
2. Proactive hedging on CEXs
3. Unified liquidity pools
4. CEX-matching spreads

Formula: Price = Oracle_Price × (1 ± Spread)

For trades <1% of pool, slippage approaches zero.

Best Practices

1. Always query first with woofi_query_swap
2. Set slippage: 0-10 bps (zero tier), 10-50 bps (low), 50-100 bps (standard)
3. Use WooRouterV2 for simplicity (handles native tokens, auto-routing)
4. Test small before large swaps

Resources

• Docs: https://learn.woo.org/woofi-docs/woofi-dev-docs/
• GitHub: https://github.com/woonetwork/woofi_swap_smart_contracts
• App: https://fi.woo.org/