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onepassword-mcp-server

onepassword-mcp-server

by lwsinclair
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Project Note: ⚠️ This MCP server is a proof of concept and is intended for educational purposes only. It utilizes the 1Password Python SDK to securely retrieve credentials from your 1Password account and provides them via the MCP Python SDK to Agentic AI for use in its operations. ⚠️

Quick Start

Installing via Smithery

To install 1Password Credential Retrieval Server for Claude Desktop automatically via Smithery:

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

Prerequisites

  • Python 3.11 or higher

  • uv (fast Python package installer): pip install uv

  • Install packages: uv sync

  • Create a vault within 1Password named AI, and add the items you want to use.

  • Create a service account and give it the appropriate permissions in the vaults where the items you want to use with the SDK are saved.

  • Provision your service account token, and configure clients like Claude Desktop to connect to this server. Add the following structure to the client's configuration (e.g., claude_desktop_config.json), adjusting the path and environment variables as needed:

// Example for Claude Desktop config
{
  "mcpServers": {
    "1Password": {
      "command": "uv",
      "args": [
        "run",
        "--with",
        "mcp[cli]",
        "--with",
        "onepassword-sdk",
        "mcp",
        "run",
        "/your/dir/here/onepassword-mcp-server/server.py" // Change this path
      ],
      "env": {
        "OP_SERVICE_ACCOUNT_TOKEN": "INSERT_KEY_HERE" // Insert 1Password Service Account Token
      }
    }
  }
}

  • Launch Claude and try a prompt such as "Get 1Password credentials for ticktick.com" (based on item name)

Automate Browser with 1Password and Browser-Use MCP

Install mcp-browser-use and configure both MCP servers as such:

// Example for Claude Desktop config
{
  "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"
      }
    }
  }
}

Available Tools

1 tool
get_1password_credentialsC

Get 1Password credentials for a given site.

Inputs: item_name (required).

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    Deploy Server
    One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

    TDQS

    B3/5.0

    Scored across 1 tool

    Disambiguation5/5

    Only one tool exists, so there is no ambiguity or confusion with other tools.

    Naming Consistency5/5

    The single tool follows a clear verb_noun pattern using snake_case, which is consistent.

    Tool Count3/5

    With just one tool, the server feels thin for most use cases, but it may be acceptable for a very narrow purpose.

    Completeness2/5

    Only a read operation is provided; missing create, update, delete, or search capabilities for a comprehensive credential management tool.

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