Which integrations are available for this server?

Provides blockchain connectivity through Alchemy's API for smart contract interaction and multi-chain support Enables smart contract analysis, method invocation (view/nonpayable/payable), and blockchain interactions across Ethereum Mainnet, Sepolia testnet, Base, and Base Sepolia networks

How do I use Web3 Assistant MCP?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Web3 Assistant MCP call the balanceOf method on this USDC contract: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

Web3 Assistant MCP

A secure blockchain smart contract interaction toolkit with multi-chain support.

Key Features

📑 Smart Contract ABI Analysis
📡 Contract Method Invocation (view/nonpayable/payable)
🔑 Local Wallet Address Management
🌐 Multi-chain Support

Project Structure

web3-assistant-mcp/ ├── src/ │ ├── common/ │ │ ├── clients/ # Blockchain client implementations │ │ ├── constants/ # Network configurations │ │ ├── services/ # Core services (contract, wallet) │ │ └── utils/ # Helper functions │ ├── tools/ # MCP tool implementations │ └── types/ # TypeScript type definitions ├── test/ # Test suites ├── .env.example # Environment template └── smithery.yaml # MCP server configuration

Quick Start

Prerequisites

Node.js 18+
pnpm
Configure environment variables (copy .env.example):

cp .env.example .env

Installation

pnpm install

Build

pnpm build

MCP Configuration Example

{ "mcpServers": { "web3-assistant": { "command": "node", "args": [ "***/dist/index.js" ], "env": { "ALCHEMY_KEY": "your_alchemy_key", "INFURA_KEY": "your_infura_key", "ANKR_KEY": "your_ankr_key", "PRIVATE_KEY": "your_wallet_private_key" } } } }

Path Note: When using MCP locally, replace *** with the absolute path to your MCP server directory.

MCP Tools Documentation

🔍 analyze_contract_abi - ABI Analysis

{ "abi": "[Contract ABI JSON string]" }

Features:

Parse contract ABI and list callable methods
Auto-detect method types (view/pure/payable)
Input/output parameter types
State mutability

📞 call_contract - Contract Interaction

{ "abi": "[Method ABI]", "networkName": "base|baseSepolia", "contractAddress": "0x...", "functionName": "methodName", "args": ["param1", param2], "value": 0.001 // ETH amount for payable methods (in ETH) }

Supported Operations:

Read contract state (view/pure)
Send transactions (nonpayable)
Token transfers (payable)

👜 local_wallet_address - Wallet Address

No parameters required:

{ "address": "0x..." }

Network Configuration

Pre-configured networks in src/common/constants/networks:

mainnet: Ethereum Mainnet
sepolia: Ethereum Sepolia
base: Base Mainnet
baseSepolia: Base Testnet

Security Guidelines

Private Key Management: Configure via environment variables
Transaction Verification: Confirm details for payable methods
Gas Limits: Automatic safe gas calculation

Install Server

A

security – no known vulnerabilities

F

license - not found

A

quality - confirmed to work

How are these scores calculated?

Resources

GitHub Repository

Need Help?

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Related Servers

Web3 Assistant MCP

Web3 Assistant MCP

Key Features

Project Structure

Quick Start

Prerequisites

Installation

Build

MCP Configuration Example

MCP Tools Documentation

🔍 analyze_contract_abi - ABI Analysis

📞 call_contract - Contract Interaction

👜 local_wallet_address - Wallet Address

Network Configuration

Security Guidelines

Resources

Tools

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MCP directory API