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EIP-7777-SuperFuse.md

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+---
+eip: 7777
+title: SuperFuse — Atomic Liquidity Booster
+author: Ali Boulkemh (@BoulkemhA)
+discussions-to: https://twitter.com/BoulkemhA
+status: Draft
+type: Standards Track
+category: ERC
+created: 2025-10-11
+requires: ERC-20
+---
+
+## Simple Summary
+A new DeFi standard that allows atomic fusion of multiple liquidity operations — swapping, vault movement, and liquidity provision — in one secure transaction.
+
+---
+
+## Abstract
+**EIP-7777: SuperFuse** introduces a unified smart-contract interface that lets protocols and users execute complex DeFi flows atomically.  
+It reduces gas costs and eliminates multi-transaction complexity while maintaining compatibility with ERC-20 and standard DEX routers.
+
+---
+
+## Motivation
+Most DeFi protocols require users to manually execute multiple steps:
+1. Withdraw tokens from a vault  
+2. Swap tokens on a DEX  
+3. Add liquidity or re-deposit into a vault  
+
+This approach is inefficient and expensive.  
+SuperFuse standardizes the process into one atomic transaction, improving composability, efficiency, and UX.
+
+---
+
+## Specification
+
+### Interface
+```solidity
+function superFuse(
+    address vault,
+    address router,
+    address tokenIn,
+    address tokenOut,
+    uint256 amountIn,
+    uint256 minOut,
+    address[] calldata path,
+    bool fromVault,
+    bool toVault,
+    uint256 deadline
+) external nonReentrant;
+```
+
+### Behavior
+1. If `fromVault` is true, withdraws from the vault.  
+2. Executes token swap via the specified router using the provided path.  
+3. Optionally deposits output into the vault if `toVault` is true.  
+4. Emits structured events for transparency.
+
+### Events
+```solidity
+event SwapExecuted(address indexed user, address tokenIn, address tokenOut, uint256 amountIn, uint256 amountOut);
+event VaultInteraction(address indexed vault, address indexed user, bool fromVault, bool toVault);
+```
+
+---
+
+## Rationale
+By merging vault, swap, and liquidity operations into one atomic action,  
+SuperFuse simplifies DeFi interactions and allows developers to compose complex flows safely and cheaply.  
+This pattern also enables on-chain strategies, smart wallets, and DeFi aggregators to become more gas-efficient.
+
+---
+
+## Reference Implementation
+BNB Smart Chain Testnet deployment example:
+
+| Component | Address |
+|------------|----------|
+| Router | `0x9ac64cc6e4415144c455bd8e4837fea55603e5c3` |
+| Vault | `0x0000000000000000000000000000000000000000` |
+| TokenA | `0xYourTokenAAddress` |
+| TokenB | `0xYourTokenBAddress` |
+| SuperFuse | `0xYourSuperFuseAddress` |
+
+---
+
+## Security Considerations
+- Implements ReentrancyGuard protection.  
+- Relies only on verified DEX router contracts.  
+- Deadline parameter prevents delayed execution.  
+- Requires token approval for ERC-20 transfers.
+
+---
+
+## Backward Compatibility
+Fully compatible with existing ERC-20 tokens and Uniswap-style routers.
+
+---
+
+## Copyright
+Copyright and related rights waived via  
+[CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).