1Password Kiro Plugin

A Kiro plugin that connects Kiro to the 1Password desktop app's local MCP server for 1Password Developer Environments.

The plugin lets Kiro help with secure project environment setup — listing Developer Environments, inspecting variable names, adding variables, and creating local .env mounts. Secret values stay controlled by 1Password and are never shared with Kiro.

Platform: The MCP server is currently macOS only.

Prerequisites

• macOS with the 1Password desktop app installed.
• The 1Password MCP Server is enabled in the desktop app by enabling Settings > Developer > Integrate with MCP Clients
• A 1Password account with Developer Environments enabled.

The local MCP server is expected at:

/Applications/1Password.app/Contents/MacOS/onepassword-mcp

Documentation

Step 1: Turn on access to the MCP server

To turn on the 1Password MCP server:

1. In 1Password, go to Settings > Developer > MCP Server, then enable “Integrate with MCP clients”

Step 2: Install the Kiro Power

Option 1: Kiro Power Marketplace

• Search for “1Password” at https://kiro.dev/powers
• Click “Add to Kiro” to open the installation page in Kiro
• Click “+ Install” to install the Power
• Click “Try power” to validate your environment and get started.

Option 2: Install from GitHub

• In Kiro, click the Powers in the Kiro Activity Bar or choose “Powers: Focus on Installed view”
• Choose “Add Custom Power”
• From the menu, choose “Import Power from GitHub
• Paste in the repo URL (https://github.com/1Password/1password-kiro-plugin)
• Choose 1password-kiro-power in the list of installed Powers
• Click “Try power” to validate your environment and get started.

What's Included

File	Purpose
mcp.json	MCP server configuration that points Kiro at the bundled onepassword-mcp binary.
POWER.md	Steering doc describing when and how Kiro should use the 1Password MCP server, the exposed tools, common flows, and safety rules.
LICENSE	MIT license.

Example Prompts

Once the plugin is enabled in Kiro, you can ask for tasks like:

• "List my 1Password Environments"
• "Create a local .env mount here"
• "Show me the variable names in my project environment"
• "Add a placeholder variable for my OpenAI API key"
• "Create a new Environment called my-project"

The 1Password desktop app may prompt for approval when Kiro connects to the MCP server or accesses an Environment.

License and Support

This power integrates with 1Password (Apache-2.0).

• Privacy Policy
• Support
• MIT LICENSE