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x402toll Order Total Calculator
x402
x402toll Order Total Calculator is a paid API for AI agents from x402toll.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Computes the final order total from subtotal, optional discount (percent or amount), tax rate, and shipping, with configurable tax-on-shipping behavior.
Price / call$0.02
Success—
StatusUnknown
How this service works
Order total from subtotal, discount, tax rate, and shipping — tax excludes shipping by default (toggle with taxShipping).
Output
Returns a computed breakdown including the discounted subtotal, tax amount, shipping, and the final order total, reflecting whether shipping is included in the tax base.
Example use cases
Example prompt
“Calculate the final order total for a cart with a $120.00 subtotal, a 15% discount, 8.5% tax rate, and $9.99 shipping — and tax should apply to shipping too.”
Technical details
Endpoint
POSThttps://x402toll.com/v1/commerce/order-totalWhen to prefer
Use this endpoint when you need a fast, deterministic order total calculation that handles discounts (percentage or flat), tax rates, and shipping in a single call — especially when you want configurable tax-on-shipping behavior. Prefer this over building custom arithmetic when accuracy and auditability of the commerce math matter.
Side effects
- Missing required subtotal field returns a validation error
- Negative values for subtotal or shipping may produce unexpected results
- Both discountPct and discountAmount supplied may cause ambiguity in discount application
- Invalid types (e.g. string instead of number) return a schema validation error
- Payment not completed (x402 flow) returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| shipping | number | |
| subtotal | number | |
| taxRatePct | number | |
| discountPct | number | |
| taxShipping | boolean | |
| discountAmount | number |
Tags
x402
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