Conductor for QuickBooks Desktop

QuickBooks Desktop Node.js MCP Server

Installation

The tools run on Conductor's hosted MCP server at https://mcp.conductor.is/. Claude (claude.ai, Claude Desktop, mobile, Cowork) and ChatGPT add that URL as a custom connector and sign in, and Claude Code adds it with claude mcp add and signs in from /mcp. Codex CLI, Cursor and VS Code send your Conductor secret key in the Authorization header. Clients that run only local (stdio) servers use this package, a thin bridge to the hosted server: it needs only Node.js and CONDUCTOR_SECRET_KEY, and the tools still run on the hosted server. The full per-client guide is at docs.conductor.is/usage/mcp.

Direct invocation

You can run the bridge directly via npx:

export CONDUCTOR_SECRET_KEY="sk_conductor_..."
npx -y conductor-node-mcp@latest

Via MCP Client

There is a partial list of existing clients at modelcontextprotocol.io. If you already have a client, consult their documentation to install the MCP server.

For a stdio client with a JSON config (one with no remote-server support), the entry looks like this; replace only sk_conductor_... with your secret key:

{
  "mcpServers": {
    "conductor": {
      "command": "npx",
      "args": ["-y", "conductor-node-mcp"],
      "env": {
        "CONDUCTOR_SECRET_KEY": "sk_conductor_..."
      }
    }
  }
}

Add "--code-allow-http-gets" to args for read-only access. Set CONDUCTOR_MCP_URL in env to point the bridge at a different server, for example a self-hosted --transport=http instance (see "Running remotely" below).

Cursor

If you use Cursor, you can install the MCP server by using the button below. You will need to set your environment variables in Cursor's mcp.json, which can be found in Cursor Settings > Tools & MCP > New MCP Server.

VS Code

If you use MCP, you can install the MCP server by clicking the link below. You will need to set your environment variables in VS Code's mcp.json, which can be found via Command Palette > MCP: Open User Configuration.

Open VS Code

Claude Code

If you use Claude Code, connect it to the hosted server by running the command below in your terminal, replacing sk_conductor_... with your secret key.

claude mcp add --transport http conductor https://mcp.conductor.is/ --header "Authorization: Bearer sk_conductor_..."

Code Mode

This MCP server is built on the "Code Mode" tool scheme. In this MCP Server, your agent will write code against the TypeScript SDK, which will then be executed in an isolated sandbox. To accomplish this, the server will expose two tools to your agent:

• The first tool is a docs search tool, which can be used to generically query for documentation about your API/SDK.

• The second tool is a code tool, where the agent can write code against the TypeScript SDK. The code will be executed in a sandbox environment without web or filesystem access. Then, anything the code returns or prints will be returned to the agent as the result of the tool call.

Using this scheme, agents are capable of performing very complex tasks deterministically and repeatably.

Running remotely

Launching the package with --transport=http runs the actual MCP server (the mode https://mcp.conductor.is/ runs) using Streamable HTTP transport. The --port setting can choose the port it will run on, and the --socket setting allows it to run on a Unix socket. Code execution in this mode needs Deno on the server.

Authorization can be provided via the Authorization header using the Bearer scheme.

Additionally, authorization can be provided via the following headers:

A configuration JSON for this server might look like this, assuming the server is hosted at http://localhost:3000:

{
  "mcpServers": {
    "conductor_node_api": {
      "url": "http://localhost:3000",
      "headers": {
        "Authorization": "Bearer <auth value>"
      }
    }
  }
}