1Password/Environment/MCP
- Local MCP/Server that ships with the 1Password desktop app. MCP clients such as Claude/Code, Codex, and CursorAI can create, list, and rename 1Password/Environments and mount local
.env files — without ever receiving secret values. - The server sees Environment and variable names only. Approval prompts appear in 1Password the first time a client uses a tool against a given Environment; approval lasts until 1Password locks.
- Requires the desktop app, an existing Environment, and an MCP client that supports stdio. Remote-only clients are not supported. The launch command is
1password-mcp. - 1Password/GitHub/1password-codex-plugin is the Codex-side plugin that registers this server. 1Password/GitHub/1password-claude-plugin is the Claude Code equivalent, and it adds a mount-check hook.