1Password MCP server

This MCP server provides secure access to your 1Password credentials for use with AI agents like Claude. It connects to your 1Password account via the official SDK and serves credential information via the Model Context Protocol (MCP), allowing AI assistants to safely retrieve and use your stored credentials when needed.

Installation

Using Smithery (Recommended)

The easiest way to install the 1Password Credential Retrieval Server is via Smithery:

npx -y @smithery/cli install @dkvdm/onepassword-mcp-server --client claude

Manual Installation

If you prefer to install manually, follow these steps:

1. Ensure you have Python 3.11 or higher installed
2. Install the uv package manager:

   pip install uv
   

3. Clone or download the repository
4. Navigate to the repository directory and install dependencies:

   uv sync
   

Configuration

1Password Setup

Before using the server, you need to set up your 1Password account:

1. Create a vault within 1Password named AI
2. Add the credential items you want to make available to AI agents
3. Create a service account
4. Give this service account appropriate permissions to access the vaults containing the items you want to use

Client Configuration

You need to configure clients like Claude Desktop to connect to this server:

1. Locate your client's configuration file (e.g., claude_desktop_config.json)
2. Add the MCP server configuration, replacing the paths and token with your own:

{
  "mcpServers": {
    "1Password": {
      "command": "uv",
      "args": [
        "run",
        "--with",
        "mcp[cli]",
        "--with",
        "onepassword-sdk",
        "mcp",
        "run",
        "/your/dir/here/onepassword-mcp-server/server.py"
      ],
      "env": {
        "OP_SERVICE_ACCOUNT_TOKEN": "INSERT_KEY_HERE"
      }
    }
  }
}

Usage

Basic Credential Retrieval

Once installed and configured:

1. Launch your Claude Desktop application
2. Ask for credentials using natural language, for example:
   • "Get 1Password credentials for ticktick.com"
   • "What's my login for spotify.com?"

The server will search for matching items in your 1Password vault and provide the credentials to Claude.

Advanced: Browser Automation

You can also integrate with mcp-browser-use to enable Claude to automatically log into websites:

1. Install the mcp-browser-use package
2. Configure both MCP servers in your client configuration:

{
  "mcpServers": {
    "1Password": {
      "command": "uv",
      "args": [
        "run",
        "--with",
        "mcp[cli]",
        "--with",
        "onepassword-sdk",
        "mcp",
        "run",
        "/your/dir/here/onepassword-mcp-server/server.py"
      ],
      "env": {
        "OP_SERVICE_ACCOUNT_TOKEN": "INSERT_KEY_HERE"
      }
    },
    "browser-use": {
      "command": "uv",
      "args": [
        "--directory",
        "/your/dir/here/mcp-browser-use",
        "run",
        "mcp-server-browser-use"
      ],
      "env": {
        "MCP_USE_OWN_BROWSER": "true",
        "CHROME_CDP": "http://127.0.0.1:9222",
        "ANTHROPIC_API_KEY": "INSERT_KEY_HERE",
        "PYTHONIOENCODING": "utf-8",
        "PYTHONUNBUFFERED": "1",
        "PYTHONUTF8": "1"
      }
    }
  }
}

3. Try a prompt like: "get 1Password credentials for ticktick.com and log into https://ticktick.com/signin"

Troubleshooting

If credentials aren't being retrieved properly:

• Verify the service account token is correct and has proper permissions
• Ensure item names in your 1Password vault match the sites you're requesting
• Check that the vault named "AI" exists and contains your credentials
• Verify the server is running when you make requests through Claude

How to add this MCP server to Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > MCP and click "Add new global MCP server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "cursor-rules-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "cursor-rules-mcp"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explictly ask the agent to use the tool by mentioning the tool name and describing what the function does.