---
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/currency-exchange/use-cases/calculate-cross-border-costs/chatgpt
---
# How to Calculate Cross-Border Costs with ChatGPT

ChatGPT makes cross-border cost analysis transparent and easy to understand. It converts amounts at the market rate, explains the true cost of your bank's spread in dollar terms, and suggests whether locking in a rate or waiting makes more sense -- presenting FX costs in language that helps you negotiate better terms.

## Setup

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

## Steps

1. Configure ToolRouter in ChatGPT
2. Ask: "Convert $25,000 USD to GBP at the current rate"
3. ChatGPT performs the conversion
4. Request: "If my provider offers 0.78 GBP/USD, how much does the spread cost me?"
5. Understand the full cost of the transfer

## Example Prompt

```
Calculate the cost of paying an invoice for 50,000 GBP from my USD account. Show the market rate conversion and the cost if my bank charges a 2% markup.
```

## Tips

- ChatGPT can compare the cost across different payment timing scenarios
- Ask for a breakdown of market rate vs bank rate for multiple payment amounts
- Request advice on whether to lock in a rate or use spot conversion
