# APIbase Integrator > AI payment for merchants. A merchant gets its own MCP storefront; a buyer's agent gets a quote and pays in USDC (x402 on Base, MPP on Tempo) straight to the merchant wallet. Fee: 0% (pilot). Merchants connected: 2. - [Overview](https://apibase.pro/integrator): the offer, four ways to add a link, fee, security, FAQ (send Accept: text/markdown for Markdown) - [Agent guide](https://apibase.pro/integrator/agent-guide): step-by-step connection for a merchant's agent, with error codes - [Integrator guide](https://apibase.pro/integrator/docs): the full merchant reference (registration, catalog, quotes, orders, webhooks, subscriptions) - [For buyers](https://apibase.pro/integrator/buyers): limits, quotes, what is and is not guaranteed - [Why Base and Tempo](https://apibase.pro/integrator/why-base-tempo): the two payment rails - [Wallet help](https://apibase.pro/integrator/wallet): getting a wallet with USDC; APIbase issues none - [Shopify](https://apibase.pro/integrator/platforms/shopify) - [WooCommerce](https://apibase.pro/integrator/platforms/woocommerce) - [Tilda](https://apibase.pro/integrator/platforms/tilda) - [Wix](https://apibase.pro/integrator/platforms/wix) - [Custom site](https://apibase.pro/integrator/platforms/custom) - [Connect form (humans)](https://apibase.pro/integrator/connect) - [Demo shop](https://apibase.pro/m/apibase-demo) - [Legal documents](https://apibase.pro/legal/index.json) - [Check a connection](https://apibase.pro/integrator/check/apibase-demo)