code402 / tools / calculate-fx-savings

Calculate cross-border FX savings — pay-per-call API

Name: code402 — Calculate cross-border FX savings
Price: 0.000999 USD
Author: code402

$0.000999 per call · 20 free calls/day · no signup · pay with card credits or a signed USDC voucher (x402)

Compute retained margin and compare Code402 floating fees vs traditional SWIFT wires (3.5%) and Deel (2.0%) across 14 global fiat currencies.

Honest scope: Deterministic, offline, explainable — no ML, no scraping. The response's scope field states the exact guarantee.

Try it (first 20 calls/day free)

curl -X POST https://code402.dev/v1/tools/calculate-fx-savings/call \
  -H "content-type: application/json" \
  -d '{"amount_usdc":50000,"currency":"BRL"}'

No key needed for the free tier. When the free quota is used up, the API replies HTTP 402 with the exact price — agents sign the x402 voucher and retry; humans buy card credits. Every paid response carries a signed receipt you can verify offline.

Run it in the playground (free)Pay by card — credits, no crypto

Input parameters

Field	Type	Meaning
`amount_usdc` (required)	number	Gross invoice settlement volume in USD/USDC.
`currency`	string	Target currency for local comparison (e.g. EUR, GBP, BRL, INR, ARS, PHP, NGN, SGD).

Response

Top-level fields: tool, amount_usdc, currency, legacy_swift_fee_usd, deel_fee_usd, code402_protocol_fee_usd, retained_savings_usd, pct_retained, local_currency, scope. Paid responses also carry a signed XDR-1 receipt.

All code402 tools

Machine-readable catalog: llms-full.txt · MCP manifest · OpenAPI. Operated by JUANA LIMITED (UK Co. No. 14043409). Non-custodial: USDC settles payer→seller directly on Base.