---
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/source-rare-items/chatgpt
---
# How to Source Rare Items with ChatGPT

Find hard-to-find products by checking which marketplaces serve your region and searching all available sources. ChatGPT works well for packaging rare-item search results into a clear summary with provenance notes and next steps.

## Setup

{"mcpServers":{"toolrouter":{"command":"npx","args":["-y","toolrouter-mcp"]}}}

## Steps

1. Connect ToolRouter in ChatGPT: {"mcpServers":{"toolrouter":{"command":"npx","args":["-y","toolrouter-mcp"]}}}
2. Describe the item, including any model variants or regional naming differences you know about.
3. Run `source_coverage` to identify active marketplaces, then `search_listings` across all available sources.
4. Have ChatGPT summarize the results with a focus on authenticity indicators, condition, and which sources are worth rechecking later.

## Example Prompt

```
Use marketplace-search to find a Technics SL-1200 MK2 turntable in Europe. Check source coverage, search all available sources, and summarize the best matches with notes on whether they appear to be original units or reissues.
```

## Tips

- Ask ChatGPT to flag listings with vague photos or generic descriptions as lower-confidence matches.
- Request a follow-up search plan with alternative terms if the first pass returns few results.
