Barzkit — Self Custody Ai Agent Wallets
@BarzKit
Self-custody AI agent wallets with passkeys, gasless transactions & programmable permissions (ERC-4337)
Overview
@barzkit/mcp
MCP Server for self-custody AI agent wallets. Works with Claude Desktop, Cursor, Windsurf, VS Code Copilot, and any MCP-compatible client.
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.
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
- Node.js >= 18
- Pimlico API key (free tier: 100 UserOps/day)
- Owner private key
License
MIT
Server Config
{
"mcpServers": {
"barzkit": {
"command": "npx",
"args": [
"@barzkit/mcp"
],
"env": {
"BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
"PIMLICO_API_KEY": "pim_YOUR_KEY",
"BARZ_CHAIN": "sepolia"
}
}
}
}