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Legacy Shield

io.github.stephenballot-ai/legacy-shield ยท v1.0.3

Zero-knowledge encrypted vault for AI agents. EU-hosted persistent storage.

Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add legacy-shield -e LEGACY_SHIELD_API_KEY=<LEGACY_SHIELD_API_KEY> -e LEGACY_SHIELD_API_URL=<LEGACY_SHIELD_API_URL> -- npx -y @legacy-shield/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "legacy-shield": {
      "command": "npx",
      "args": [
        "-y",
        "@legacy-shield/[email protected]"
      ],
      "env": {
        "LEGACY_SHIELD_API_KEY": "<LEGACY_SHIELD_API_KEY>",
        "LEGACY_SHIELD_API_URL": "<LEGACY_SHIELD_API_URL>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "legacy-shield": {
      "command": "npx",
      "args": [
        "-y",
        "@legacy-shield/[email protected]"
      ],
      "env": {
        "LEGACY_SHIELD_API_KEY": "<LEGACY_SHIELD_API_KEY>",
        "LEGACY_SHIELD_API_URL": "<LEGACY_SHIELD_API_URL>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "legacy-shield": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@legacy-shield/[email protected]"
      ],
      "env": {
        "LEGACY_SHIELD_API_KEY": "<LEGACY_SHIELD_API_KEY>",
        "LEGACY_SHIELD_API_URL": "<LEGACY_SHIELD_API_URL>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
LEGACY_SHIELD_API_KEY
Required, secret		Your LegacyShield API key (starts with ls_). Get one at POST https://api.legacyshield.eu/api/v1/auth/agent-register
LEGACY_SHIELD_API_URL
Optional		LegacyShield API base URL

Details

Package@legacy-shield/[email protected] (NPM, stdio)
First published16 Mar 2026
Last updated16 Mar 2026
Registry nameio.github.stephenballot-ai/legacy-shield

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