Billy MCP Server

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add billy-mcp -- npx -y billy-mcp

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

[mcp_servers.billy-mcp]
command = "npx"
args = ["-y", "billy-mcp"]

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

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

This one needs environment variables set before it will start: BILLY_ACCESS_TOKEN (Billy API access token (create at mit.billy.dk -> Settings -> Access tokens)), BILLY_WRITE_MODE (Write protection: read-only, confirm (default, requires elicitation-capable host), or full), BILLY_ORGANIZATION_ID (Billy organization ID (auto-resolved when the token maps to a single company)), BILLY_LOCALE (Response language: en_US, da_DK, fr_FR, nl_NL, or de_DE). The author declared them in the registry entry; get the values from the project itself.