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barzkit

BarzKit — Self-custody AI Agent Wallets

by barzkit

@barzkit/mcp

MCP Server for self-custody AI agent wallets. Works with Claude Desktop, Cursor, Windsurf, VS Code Copilot, and any MCP-compatible client.

npm

Setup

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "barzkit": {
      "command": "npx",
      "args": ["@barzkit/mcp"]
    }
  }
}

Cursor

Add to .cursor/mcp.json in your project root:

{
  "mcpServers": {
    "barzkit": {
      "command": "npx",
      "args": ["@barzkit/mcp"]
    }
  }
}

Windsurf / VS Code Copilot

Same format — add to your MCP configuration file.

Related MCP server: Grip MCP

Tools

Tool

Description

create_wallet

Create a new ERC-4337 smart account on Sepolia, Base Sepolia, or Base

send_transaction

Send ETH or ERC-20 tokens to a recipient address

check_balance

Check wallet balance for ETH or specific token

swap_tokens

Swap tokens on Uniswap V3

lend_tokens

Deposit tokens into Aave V3 lending pool

batch_transactions

Execute multiple transactions atomically in one UserOperation

freeze_wallet

Emergency freeze — kill switch

unfreeze_wallet

Resume normal wallet operations

fetch_with_payment

Fetch URL with automatic x402 payment

Usage

Once configured, ask your AI assistant:

  • "Create a wallet on Sepolia with my key 0x... and Pimlico key pim_..."

  • "Send 0.01 ETH to 0xABC..."

  • "What's my wallet balance?"

  • "Swap 0.1 ETH for USDC"

  • "Freeze my wallet immediately"

The create_wallet tool must be called first to initialize the wallet before using any other tool.

Programmatic Usage

import { createBarzMcpServer } from '@barzkit/mcp'
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'

const server = createBarzMcpServer()
const transport = new StdioServerTransport()
await server.connect(transport)

Prerequisites

License

MIT

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