What is the key difference between Ref Tools Ref Tools Mcp and Shipping Rates & Postage Calculator?

Ref Tools Ref Tools Mcp belongs to the Finance & Fintech category with local stdio execution, while Shipping Rates & Postage Calculator belongs to the Finance & Fintech category with cloud HTTP/SSE execution.

How do I install Ref Tools Ref Tools Mcp or Shipping Rates & Postage Calculator 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 Ref Tools Ref Tools Mcp and Shipping Rates & Postage Calculator free or paid?

Ref Tools Ref Tools Mcp operates under a Free / Open Source model (No auth required). Shipping Rates & Postage Calculator operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Ref Tools Ref Tools Mcp lists 2 tools with 0 views and 1,148 GitHub stars. Shipping Rates & Postage Calculator lists 0 tools with 1 views and 0 GitHub stars.

Can I use both Ref Tools Ref Tools Mcp and Shipping Rates & Postage Calculator 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.

What is the main functional difference between Ref Tools Ref Tools Mcp and Shipping Rates & Postage Calculator?

Ref Tools Ref Tools Mcp is categorized under Finance & Fintech and uses a local stdio subprocess . In contrast, Shipping Rates & Postage Calculator belongs to Finance & Fintech using remote streaming HTTP/SSE transport . Select Ref Tools Ref Tools Mcp when you need capabilities focused on finance & fintech and Shipping Rates & Postage Calculator when you require tools for finance & fintech .

How do I install Ref Tools Ref Tools Mcp or Shipping Rates & Postage Calculator in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are Ref Tools Ref Tools Mcp and Shipping Rates & Postage Calculator free to use, or do they require API keys?

Ref Tools Ref Tools Mcp is listed under a Free / Open Source model with No auth required . Shipping Rates & Postage Calculator operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both Ref Tools Ref Tools Mcp and Shipping Rates & Postage Calculator at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both ref-tools-ref-tools-mcp and shipping-rates-postage-calculator as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Ref Tools Ref Tools Mcp has a Quality Score of 56 /100 ( Good ) with 0 views, 0 installs, and 1,148 GitHub stars. Shipping Rates & Postage Calculator holds a Quality Score of 42 /100 ( Fair ) with 1 views, 0 installs, and 0 GitHub stars.

Ref Tools Ref Tools M… vs Shipping Rates & Post…

Ref Tools Ref Tools M… vs Shipping Rates & Post… | AllMCPs

Feature & Specification Comparison

Specification	R Ref Tools Ref Tools Mcp Finance & Fintech	S Shipping Rates & Postage Calculator Finance & Fintech
Summary	Provide your AI coding tools with token-efficient access to up-to-date technical documentation for…	Live USPS, UPS & FedEx shipping rates plus USPS postage and stamp prices. Free, no API key.
Category & Scope	Finance & Fintech	Finance & Fintech
Quality signal	56/100 (Good)	42/100 (Fair)
Transport Protocol	Local Subprocess (stdio)	Remote HTTP/SSE
Auth Requirement	No auth required	No auth required
Pricing Model	Free / Open Source	Free / Open Source
Required Env Vars	None required	None required
Compatible Clients	Claude DesktopCursorWindsurfClineVS Code	Claude DesktopCursorWindsurfClineVS Code
Install path signal	`npx · high`	`Remote (HTTP/SSE) · medium`
Engagement & Health	0 views 0 copies 0 upvotes 1,148 stars	1 views 0 copies 0 upvotes
Verified / Official	Community Listing	Community Listing
Open full listing	View Ref Tools Ref Tools Mcp Listing	View Shipping Rates & Postage Calculator Listing

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).

Ref Tools Ref Tools Mcp Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "ref-tools-ref-tools-mcp": {
      "command": "npx",
      "args": [
        "ref-tools-mcp@latest"
      ]
    }
  }
}

Shipping Rates & Postage Calculator Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "shipping-rates-postage-calculator": {
      "url": "https://onlineshippingcalculator.com/mcp"
    }
  }
}

Ref Tools Ref Tools Mcp vs Shipping Rates & Postage Calculator

At a Glance & Executive Verdict

Which MCP Server Should You Choose?

Choose Ref Tools Ref Tools Mcp when:

Choose Shipping Rates & Postage Calculator when:

Feature & Specification Comparison

Tools & Capabilities Breakdown

Ref Tools Ref Tools Mcp Tools (2)

Shipping Rates & Postage Calculator Tools (0)

Ready-to-Paste Client Configurations

Frequently Asked Questions

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