Welcome
Developing decentralized applications (dApps) across multiple blockchain networks is an ambitious but often daunting task. The current landscape is riddled with inconsistencies and technical hurdles that slow down development, create user friction, and introduce avoidable complexity.
Multichain Wallet Connector was built to streamline this process by offering a unified interface for interacting with wallets and smart contracts on 50+ EVM-compatible chains. Whether you’re building on Ethereum, Polygon, BSC, or Optimism, this library empowers developers to focus on innovation rather than infrastructure.
The Problem: Fragmented Wallet Interactions
Building a cross-chain dApp today means dealing with a messy patchwork of tools and APIs:
Inconsistent Wallet Support Every wallet—MetaMask, Coinbase Wallet, Rabby, Trust Wallet, etc.—comes with its own quirks, implementation of standards, and connection logic. Supporting multiple wallets requires repetitive, error-prone work.
Chain Switching Hassles Developers are forced to manually configure RPC URLs, chain IDs, and explorer links for each supported network. These operations vary slightly per wallet and often lead to “Unsupported Chain” errors if not handled perfectly.
Signing Method Variations Handling signing operations (messages, typed data, and transactions) across wallets requires deep familiarity with standards like EIP-1193, EIP-191, and EIP-712—and each wallet may interpret these standards differently.
Contract Interaction Complexity Reading and writing to contracts requires boilerplate code for gas estimation, error catching, event decoding, and formatting—all of which adds unnecessary friction and code duplication.
Lack of Standardization There is no single, developer-friendly toolkit that unifies all wallet interactions across chains and abstracts the differences under one clean interface.
The Solution: A Unified Wallet Interface
Multichain Wallet Connector removes these bottlenecks with an intuitive, lightweight library that unifies wallet and chain operations into one consistent developer experience:
🔹 Single API for 50+ EVM Chains Interact with Ethereum, Polygon, BSC, Arbitrum, Optimism, and others using one unified codebase—no special logic required for each chain.
🔹 Automatic Wallet Detection Detects and connects to MetaMask, Coinbase Wallet, Rabby, Trust Wallet, and more with zero configuration.
🔹 Simplified Chain Management Automatically adds or switches to the correct network and configures RPCs in the background—removing complexity from the developer and the end-user experience.
🔹 Full Signing Support Sign messages, transactions, and typed data using a consistent interface, regardless of wallet differences or EIP implementations.
🔹 Smart Contract Toolkit Call contract methods with automatic gas estimation, structured response handling, and error management.
🔹 Lightweight & Framework-Agnostic Designed to work in React, Vue, vanilla JS, Node.js, and more—making it ideal for modern web, mobile, or server-side dApps.
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