Barzkit — Self Custody Ai Agent Wallets

by barzkit

318 downloads

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GitHub

About

Self-custody AI agent wallets with passkeys, gasless transactions & programmable permissions (ERC-4337)

Details

Author: barzkit
Downloads: 318
Categories: AI

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name Barzkit — Self Custody Ai Agent Wallets

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

From the repository

Add a barzkit entry to your client’s MCP configuration file using npx @barzkit/mcp. After configuration, ask the AI assistant wallet‑related natural language commands. The create_wallet tool must be run first; afterward all other tools become available.

`create_wallet`

Create a new self-custody AI agent wallet (ERC-4337 smart account). Must be called before any other tool.

`send_transaction`

Send ETH or ERC-20 tokens from the agent wallet to a recipient address.

`check_balance`

Check the agent wallet balance for ETH or a specific ERC-20 token.

`swap_tokens`

Swap tokens on Uniswap V3 via the agent wallet. Supports ETH, USDC, WETH, DAI.

`lend_tokens`

Deposit tokens into Aave V3 lending pool via the agent wallet.

`batch_transactions`

Execute multiple transactions atomically in a single UserOperation. One signature, one gas fee.

`freeze_wallet`

Emergency freeze the agent wallet. Kill switch — immediately stops all transactions.

`unfreeze_wallet`

Unfreeze the agent wallet to resume normal operations.

`fetch_with_payment`

Fetch a URL with automatic x402 payment if the server returns HTTP 402. Handles machine-to-machine payments.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "barzkit \u2014 self custody ai agent wallets": {
            "barzkit": {
                "command": "npx",
                "args": [
                    "@barzkit/mcp"
                ],
                "env": {
                    "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
                    "PIMLICO_API_KEY": "pim_YOUR_KEY",
                    "BARZ_CHAIN": "sepolia"
                }
            }
        }
    }
}

McpServers

{
    "barzkit": {
        "command": "npx",
        "args": [
            "@barzkit/mcp"
        ],
        "env": {
            "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
            "PIMLICO_API_KEY": "pim_YOUR_KEY",
            "BARZ_CHAIN": "sepolia"
        }
    }
}

@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: ``

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



Cursor


Add to

.cursor/mcp.json

 in your project root:

json
{
  "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

typescript
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

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Details

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Setting up with Highlight

From the repository

create_wallet

send_transaction

check_balance

swap_tokens

lend_tokens

batch_transactions

freeze_wallet

unfreeze_wallet

fetch_with_payment

Claude Desktop / Cursor

McpServers

@barzkit/mcp

Setup

Claude Desktop

Cursor

Windsurf / VS Code Copilot

Tools

Usage

Programmatic Usage

Prerequisites

License

Install

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`create_wallet`

`send_transaction`

`check_balance`

`swap_tokens`

`lend_tokens`

`batch_transactions`

`freeze_wallet`

`unfreeze_wallet`

`fetch_with_payment`