How to Calculate Cross-Border Costs with Claude
Calculate cross-border costs with Claude and ToolRouter. True cost of international payments.
Tool
Claude dissects cross-border payment costs with analytical thoroughness, converting at the market rate and comparing against your bank's spread to quantify hidden fees. It models payment timing scenarios, calculates break-even points for hedging, and asks follow-up questions about your payment patterns to optimize your FX cost structure.
Connect ToolRouter to Claude
1Go to Settings → Connectors → Add custom connector
2Enter the details below and click Add
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Done — works on Claude chat, desktop, and mobile
Steps
Once connected (see setup above), use the Currency Exchange tool:
- Ask Claude: "Convert $50,000 USD to EUR at the current market rate using currency-exchange"
- Claude shows the market rate conversion
- Ask: "My bank offers 1.05 EUR/USD -- how much am I losing vs the market rate?"
- Calculate the true cost of the international payment
Example Prompt
Try this with Claude using the Currency Exchange tool
I need to pay a supplier 100,000 EUR. Convert from USD at the market rate. My bank charges a 1.5% spread -- what is the total cost including the spread?
Tips
- Claude can calculate the hidden cost of bank and payment provider FX spreads
- Ask for the cost comparison between paying now vs waiting for a better rate
- Factor in wire transfer fees alongside the FX cost for true total cost