Billy MCP Server: Install & Setup

Install Billy in Claude Code

Claude Code

claude mcp add billy -e BILLY_ACCESS_TOKEN=... -- npx -y billy-mcp

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

{
  "mcpServers": {
    "billy": {
      "command": "npx",
      "args": [
        "-y",
        "billy-mcp"
      ],
      "env": {
        "BILLY_ACCESS_TOKEN": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Billy MCP server do?

Billy (billy.dk) accounting: invoices, journal entries, trial balance, with write protection.

Is the Billy 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 Billy run locally or remotely?

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

How do I add Billy to Claude Code?

Run: claude mcp add billy -e BILLY_ACCESS_TOKEN=... -- npx -y billy-mcp

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