Glassbox MCP Server: Install & Setup

Install Glassbox in Claude Code

Claude Code

claude mcp add glassbox -e ANTHROPIC_API_KEY=... -- npx -y @glassbox-framework/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "glassbox": {
      "command": "npx",
      "args": [
        "-y",
        "@glassbox-framework/mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Glassbox MCP server do?

Runtime constitutional verification for AI answers — claim reasoning, ECS, red team, audits.

Is the Glassbox MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Glassbox run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Glassbox to Claude Code?

Run: claude mcp add glassbox -e ANTHROPIC_API_KEY=... -- npx -y @glassbox-framework/mcp

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