How does the tool calculate the shipping gap?

The `calculate_shipping_gap` tool subtracts your current cart total from your target free shipping threshold to find the exact deficit.

Can I use this to find combinations of items?

Yes, the `identify_best_item_pair` tool evaluates all possible pairs from your list of potential filler items to find the combination that meets the deficit with the lowest overage.

What is the goal of the optimal strategy tool?

The `determine_optimal_strategy` tool compares the results from both single-item and pair-item strategies to recommend the plan that minimizes extra spending.

Free Shipping Threshold Filler MCP Connector for Claude

A+

Calculate the exact items to add to your cart to hit free shipping with zero waste.

4 tools Official Updated Oct 1, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server provides a precise way to reach your free shipping threshold without overspending. By using tools like calculate_shipping_gap, identify_best_single_filler, and identify_best_item_pair, you can determine whether adding one item or a pair of items is the most cost-effective strategy. The determine_optimal_strategy tool compares these approaches to find the path with the minimum overage, ensuring you hit your target spend with as little waste as possible.

free-shippingcart-optimizationecommerce-toolscost-savingsshopping-assistant

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_AsaGFYI9ddUp5MwNwztpOWj5rY27XrjtGIPTNKa8/mcp

② Claude Code (terminal)

claude mcp add --transport http free-shipping-threshold-filler https://edge.vinkius.com/vk_preview_AsaGFYI9ddUp5MwNwztpOWj5rY27XrjtGIPTNKa8/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "free-shipping-threshold-filler": {
      "url": "https://edge.vinkius.com/vk_preview_AsaGFYI9ddUp5MwNwztpOWj5rY27XrjtGIPTNKa8/mcp"
    }
  }
}

Get full access on Vinkius

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