Free browser tool - Updated 2026-07-06
x402 Pricing Calculator
Model monthly API calls, per-call x402 pricing, settlement overhead, and a subscription alternative. The output makes the pay-per-use tradeoff visible before you wire payments into an endpoint.
Comparison
| Model | Gross revenue | Estimated fees | Estimated net |
|---|
How to read the numbers
The calculator compares shapes, not provider quotes. For exact payments, per-call settlement overhead matters. For batch settlement, the fixed per-call overhead can fall because authorizations are accumulated and redeemed later. For subscriptions, the seller may earn more predictable revenue while the buyer pays for unused capacity.
A good x402 price is not merely the smallest technically possible amount. It should cover resource cost, failed retries, support, facilitator behavior, refunds, accounting, and the value the buyer receives from one paid request.
How to use it
- Enter expected monthly calls and the per-call price.
- Adjust x402 percentage and fixed per-call overhead assumptions.
- Enter the subscription price and included monthly calls for the alternative.
- Compare gross revenue, estimated fees, net revenue, and buyer overpay.
FAQ
Are the fee assumptions official?
No. The calculator uses editable dated assumptions so you can compare shapes. Replace them with your facilitator, network, processor, and accounting costs before making a pricing decision.
Should every API move from subscriptions to x402?
No. x402 is strongest for clear marginal-value requests. Subscriptions remain useful for enterprise access, support, predictable procurement, bundled usage, and negotiated contracts.
How should I model batch settlement?
Lower the per-call fixed overhead to reflect batched settlement economics, then compare the result against immediate exact or upto settlement.