Charge per call,
not just per month.
XGateway sits in front of your existing API and handles the payment. Set a fixed price per route, or price the call against the value it returns. Apps and AI agents pay in USDC on Base. We settle to you daily, and every settlement is verifiable on-chain.
Payments infrastructure already in production.
XGateway runs crypto and fiat payment infrastructure for live merchants. x402 is a new rail on the same stack.
Price the call by what it is worth.
Use a fixed price per route, or price it as a percentage of the value returned. A risk check on a $50,000 transaction can be priced differently from one on $50. Set the rule; XGateway reads the transaction value your API returns and calculates the charge automatically.
Keep your plans. Add another way to buy.
Subscriptions work for regular customers. Pay-per-call opens the API to occasional buyers and software that only needs one request. XGateway runs alongside what you already sell.
No billing stack to build.
XGateway handles the 402 challenge, payment verification and access. Your billing logic does not need to live inside the API.
Keep what already works.
Existing plans and customers carry on unchanged. Pay-per-call is an additional route, not a migration.
Sell directly to software.
Apps and AI agents can pay for a single request without a checkout, invoice or sales conversation.
Settled to your wallet daily.
Payments are collected in USDC and settled to your wallet every day, net of the platform fee. Every settlement is a transaction you can check on-chain.
Value-based pricing is already running in production.
Charge per request
Set a fixed USDC price per route, or use value-based pricing. No subscription or prepaid balance required for the buyer.
Keep your API as it is
XGateway runs as a reverse proxy and handles the 402 challenge, payment verification and access layer in front of your existing service. No billing logic needs to be added to the underlying API.
Agents pay without a checkout
The price is machine-readable, so software can authorise payment and continue automatically. No checkout or invoice is required.
Price calls in USDC from $0.01.
Paid in USDC on Base. You set the price; buyers see it before they pay.
Building an agent? Give it this file.
A machine-readable reference for paying an XGateway-protected API: the 402 challenge, the payment header and the networks.
agent-reference.txtFor engineers
XGateway is a reverse proxy: it answers unpaid requests with an x402 payment challenge, verifies USDC payments on Base (EIP-3009 authorisations), and forwards paid requests to your API unchanged.