What is the key difference between Royalmail MCP and Unfour?

Royalmail MCP belongs to the Delivery category with local stdio execution, while Unfour belongs to the Delivery category with local stdio execution.

How do I install Royalmail MCP or Unfour in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Royalmail MCP and Unfour free or paid?

Royalmail MCP operates under a Free / Open Source model (API Key required). Unfour operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Royalmail MCP lists 6 tools with 1 views and 3 GitHub stars. Unfour lists 0 tools with 1 views and 2 GitHub stars.

Can I use both Royalmail MCP and Unfour together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Royalmail MCP vs Unfour

In-depth architectural comparison of the Royalmail MCP and Unfour MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Royalmail MCP

Delivery · Local stdio

Quality: 59/100 (Good) | Auth: API Key required

Unfour

Delivery · Local stdio

Quality: 40/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Royalmail MCP if you need specialized Delivery tools running via a local process. Choose Unfour if your workspace requires Delivery integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Royalmail MCP when:

You need dedicated capabilities in the Delivery domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Free / Open Source).
You have access to required keys: RM_API_KEY, RM_BASE_URL.
Primary tools included: book_order, get_label, book_batch_and_label.

Explore Royalmail MCP Details

Choose Unfour when:

You need dedicated capabilities in the Delivery domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Unfour Details

Feature & Specification Comparison

Specification	Royalmail MCP catrinmdonnelly Delivery	Unfour zyqzyq Delivery
Summary	Book, label, track and cancel Royal Mail and Parcelforce shipments. 33 UK and international services via friendly keys or raw Service Register codes. npx royalmail-mcp.	Local-first backend developer workspace exposing API debugging, SSH, database, workspace, and diagnostics tools to AI agents through a local MCP server, with workspace-scoped safety policies and confirmation for risky actions.
Category & Scope

Tools & Capabilities Breakdown

Royalmail MCP Tools (6)

book_order

Book a Royal Mail shipment via Click & Drop. Returns an orderIdentifier used to retrieve the label.

get_label

Get the shipping label for a Royal Mail Click & Drop order and save it to disk. Works for any order you have previously booked — pass its orderIdentifier. Default save location is ~/Downloads/parcel-toolkit/, overridable via the PARCEL_TOOLKIT_LABELS_DIR env var.

book_batch_and_label

Book multiple Royal Mail orders at once and return a single merged PDF containing every label, ready to print. Use this when the user pastes a list of orders/addresses. All orders share the same service, package format and sender. Saves the merged PDF to ~/Downloads/parcel-toolkit/ (overridable via PARCEL_TOOLKIT_LABELS_DIR).

track_order

Get the current status and tracking details for a Royal Mail Click & Drop order.

cancel_order

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Royalmail MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "catrinmdonnelly-royalmail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "royalmail-mcp"
      ],
      "env": {
        "RM_API_KEY": "YOUR_RM_API_KEY_HERE",
        "RM_BASE_URL": "YOUR_RM_BASE_URL_HERE"
      }
    }
  }
}

Unfour Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "zyqzyq-unfour": {
      "command": "npx",
      "args": [
        "-y",
        "zyqzyq-unfour"
      ]
    }
  }
}

Frequently Asked Questions

Royalmail MCP is categorized under Delivery and uses a local stdio subprocess. In contrast, Unfour belongs to Delivery using local stdio subprocess. Select Royalmail MCP when you need capabilities focused on delivery and Unfour when you require tools for delivery.

More alternatives to Royalmail MCP More alternatives to Unfour Delivery category hub