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 secret names, adding secrets, and creating local .env mounts. Secret values stay controlled by 1Password and are never shared with Kiro.

Platform: The 1Password Kiro Power is currently macOS only.

Prerequisites

• macOS with the 1Password desktop app installed.
• Integrate with MCP clients turned on under Settings > Developer in the desktop app.
• A 1Password account with Developer Environments enabled.

The local MCP server is expected at:

/Applications/1Password.app/Contents/MacOS/1password-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, then turn on 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 icon 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 in the list of installed Powers
• Click "Try power" to validate your environment and get started.

Step 3: Allow Kiro to access 1Password data (macOS 27 Golden Gate)

On macOS 27 Golden Gate, macOS blocks Kiro from accessing 1Password app data by default and doesn't ask for permission. Until you allow it, the MCP server can't start.

1. Open System Settings > Privacy & Security > Files & Folders.
2. Select Kiro.
3. Turn on the setting that starts with "Data shared by 1Password". The rest of the name depends on which 1Password apps you've installed.
4. Quit Kiro (Cmd+Q), reopen it, and confirm the 1Password MCP server is connected.

What's Included

File	Purpose
mcp.json	MCP server configuration that points Kiro at the bundled 1password-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 secret names in my project environment"
• "Add a placeholder secret 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 is released under the MIT license.

It integrates with the 1Password desktop app, which is proprietary software.

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• Support