monetize-service

You can monetize an API by setting up an Express server and protecting endpoints with x402 payment middleware, which enforces per-call pricing on Base and other supported networks.

The x402 payment protocol is a mechanism that enables per-request payments for API access, removing the friction of traditional billing and subscriptions by authenticating wallet transactions directly.

You add payment middleware to an Express server by initializing your wallet and applying the x402 protected route configuration, which intercepts requests and requires successful payment before access.

Yes, you can register endpoints with the Bazaar so other agents can discover and pay for access, and you can include optional discovery extensions to describe response schemas for clients.

Yes, wallet authentication is required to set up a paid API, as the x402 payment protocol relies on wallet initialization to process per-request payments and verify transactions on supported networks.

Using x402 for API monetization is limited to supported networks like Base and requires an Express server environment, meaning it may not suit traditional subscription billing models or unsupported blockchain networks.