---
title: ToolRouter — Agent Use Case Guide
description: Step-by-step guide for completing a task with a specific AI agent using ToolRouter.
url: https://toolrouter.com/tools/marketplace-search/use-cases/compare-prices-across-marketplaces/claude
---
# How to Compare Prices Across Marketplaces with Claude

Find the best deal on a specific product by searching multiple marketplaces and comparing prices, conditions, and seller details side by side. Claude excels at reasoning through trade-offs between price, condition, shipping cost, and seller reliability to recommend the strongest option.

## Setup

claude mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter in Claude: claude mcp add toolrouter -- npx -y toolrouter-mcp
2. Specify the product, acceptable condition range, and any constraints like maximum price, preferred region, or shipping method.
3. Use `marketplace-search` with `search_listings` to pull results from multiple sources. Then use `listing_details` to inspect the top candidates.
4. Ask Claude to rank the listings by total cost including shipping, flag any suspicious pricing, and recommend the best option with reasoning.

## Example Prompt

```
Use marketplace-search to find a used Nintendo Switch OLED across UK marketplaces. Search listings from all available sources, pull details on the five cheapest, and rank them by total cost including shipping. Flag anything that looks too cheap to be real.
```

## Tips

- Include shipping and fees in total cost comparisons or the cheapest listing price might not be the best deal.
- Ask Claude to flag listings with vague descriptions or stock photos as potential scam indicators.
- Narrow by condition early to avoid comparing mint-condition items against heavily used ones.
