Magnee

Cross-chain payment interceptor. Pay for any on-chain transaction with tokens from any supported chain.

A browser extension wraps window.ethereum, intercepts payable transactions, and offers to bridge payment from a chain where you hold funds — using Li.Fi for bridging and EIP-7702 for preserving msg.sender identity.

flowchart LR
    Dapp["Dapp<br/>(any)"] -->|eth_sendTransaction| PW["Provider Wrapper"]
    PW -->|value > 0?| Popup["Magnee Popup"]
    Popup -->|user picks source chain/token| LiFi["Li.Fi SDK"]
    LiFi -->|bridge + contract call| Dest["Destination Chain"]
    Dest -->|executeWithSignature| DA["Delegate Account<br/>(user's EOA)"]
    DA -->|msg.sender preserved| Target["Target Contract"]

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Packages

Package	Description
contracts/	EIP-7702 delegate account (Solidity/Foundry)
extension/	Browser extension — interceptor, bridge UI, wallet bridge
web/	Landing page + transaction explorer
demo/	Test dapp for development
packages/ui/	Shared React components
metamask-patch/	MetaMask EIP-7702 patch builder
scripts/	CLI utilities (tx-trace)

Key Integrations

• LIFI.md — Li.Fi SDK for cross-chain bridging with contract calls
• ENS.md — ENS text records for portable user settings

Quick Start

bun install               # install all workspaces
bun run dev               # start extension + demo + web concurrently
bun run build             # build extension + demo
bun run test              # run extension + contract tests

Supported Chains

Ethereum, Optimism, Base, Arbitrum

Tech Stack

Bun, Vite, React, TypeScript, Tailwind CSS, viem, wagmi, @lifi/sdk, Foundry (Solidity 0.8.33)