---
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/openclaw
---
# How to Compare Prices Across Marketplaces with OpenClaw

Find the best deal on a specific product by searching multiple marketplaces and comparing prices, conditions, and seller details side by side. OpenClaw is the stronger choice when you want to run the same price comparison across multiple products or regions in a repeatable batch.

## Setup

openclaw mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter in OpenClaw: openclaw mcp add toolrouter -- npx -y toolrouter-mcp
2. Define the product list, condition filters, and output schema before the first batch run.
3. Run `search_listings` and `listing_details` with `marketplace-search` for each product, keeping field names consistent.
4. Review the batch output, filter to the best deals per product, and export the final comparison with a stable schema for future reruns.

## Example Prompt

```
Use marketplace-search to compare prices for a used Nintendo Switch OLED across UK marketplaces. Search all sources, get details on the top five per source, and return results in a stable schema so I can rerun this comparison weekly.
```

## Tips

- Lock the output schema on the first run so weekly comparisons stay diff-friendly.
- Batch multiple products into one session to reduce total search overhead.
