A Model-Context-Protocol server for interacting with multiple blockchains including Solana and Ethereum. This server provides simple RPC endpoints for common blockchain operations.

Features

Solana Operations:

Get current slot number
Check SOL account balances
Get detailed account information
Display keypair information
Transfer SOL between accounts

Ethereum Operations:

Check ETH account balances
Check ERC-20 token balances

Quickstart

clone and install dependencies:

git clone https://github.com/yourusername/web3-mcp.git
cd web3-mcp
npm install

build the tool

npm run build

add the tool to your claude_desktop_config.json

"web3-rpc": {
            "command": "node",
            "args": [
                "/PATH/TO/web3-mcp/build/index.js"
            ]
        }

Usage

Ask Claude:

whats the latest slot on solana?
whats the balance of 62QXuWZ3WT6ws1ZFxJobVDVXn6bEsiYpLo5yG612U6u3?
Here's my test key [REPLACE WITH SECRET KEY]. let's transfer 0.001 SOL to [REPLACE WITH PUBLIC ADDRESS]

Security Note

Only use this with a test wallet with a small amount of funds.

RPC Endpoint

The server connects to Solana's mainnet at https://api.mainnet-beta.solana.com. To use a different network (like devnet or testnet), modify the SOLANA_RPC constant in src/index.ts.