x402 Payment Protocol

Make paid API requests using the x402 HTTP payment protocol (USDC on Base Sepolia). Use when you need to access x402-protected services, pay for API calls wi...

Internet-native payments using the HTTP 402 Payment Required standard. Set up as a buyer to pay for API access, or as a seller to monetize your APIs.

Search for new services and make paid API requests using the x402 payment protocol. Use when you don't have a clear tool to choose, search the bazaar. You can also use this tool if you or the user want to call an x402 endpoint, discover payment requirements, browse the bazaar, or search for paid services.

Make x402 payments. Pay for APIs, sell your services, handle 402 Payment Required responses with USDC on Base and other EVM chains.

Access CoinMarketCap data via x402 pay-per-request protocol with USDC payments on Base. Use when users mention x402, want CMC data without API keys, ask abou...

Make a paid API request to an x402 endpoint with automatic USDC payment. Use when you or the user want to call a paid API, make an x402 request, use a paid service, or pay for an API call. Use after finding a service with search-for-service.