{"product_id":"x402-api","title":"x402 Paid API \/ Endpoint Implementation","description":"\u003cp\u003e\u003cstrong\u003eBuild paid, machine-accessible API endpoints with proper authentication, enforcement, and verification.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eEngineering-led endpoint implementation\u003c\/h2\u003e\n\u003cp\u003eThis service covers the design and implementation of paid API endpoints intended to be consumed by machines and agents, including how access is authenticated, how payment is enforced, and how the endpoint is verified and monitored.\u003c\/p\u003e\n\u003ch3\u003eWho It's For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBusinesses with data, tooling, or capability worth exposing as a paid API\u003c\/li\u003e\n\u003cli\u003eTeams that need payment enforcement built into the access path\u003c\/li\u003e\n\u003cli\u003eOperators who need endpoints verified rather than assumed to work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Is Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEndpoint design and specification\u003c\/li\u003e\n\u003cli\u003eAuthentication and access-control implementation\u003c\/li\u003e\n\u003cli\u003ePayment enforcement on the access path\u003c\/li\u003e\n\u003cli\u003eRequest handling, error responses, and rate considerations\u003c\/li\u003e\n\u003cli\u003eTesting and verification against real request flows\u003c\/li\u003e\n\u003cli\u003eMonitoring and logging setup\u003c\/li\u003e\n\u003cli\u003eTechnical documentation and handoff\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Is Not Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnlimited endpoints or unbounded API surface\u003c\/li\u003e\n\u003cli\u003eLong-term hosting or infrastructure costs\u003c\/li\u003e\n\u003cli\u003eOngoing operation or on-call support after handoff\u003c\/li\u003e\n\u003cli\u003eGuaranteed consumption by any agent, crawler, or third party\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCustomer Responsibilities\u003c\/h3\u003e\n\u003cp\u003eAccess to the systems and data being exposed, decisions on access rules and pricing, and availability for verification.\u003c\/p\u003e\n\u003ch3\u003eHow Final Pricing Is Determined\u003c\/h3\u003e\n\u003cp\u003eThe figure above is a starting point, not a quote. Final scope and price are confirmed during your free Project Discovery consultation, before any work begins, and depend on technical factors including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNumber and complexity of integrations\u003c\/li\u003e\n\u003cli\u003eInfrastructure and hosting requirements\u003c\/li\u003e\n\u003cli\u003eAuthentication and access-control requirements\u003c\/li\u003e\n\u003cli\u003eAPI design, endpoints, and data handling\u003c\/li\u003e\n\u003cli\u003eAgent behavior, permissions, and approval boundaries\u003c\/li\u003e\n\u003cli\u003ePayment architecture and settlement requirements\u003c\/li\u003e\n\u003cli\u003eMonitoring, logging, and alerting needs\u003c\/li\u003e\n\u003cli\u003eDeployment environment and release process\u003c\/li\u003e\n\u003cli\u003eOngoing support and maintenance expectations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThird-Party Costs\u003c\/h3\u003e\n\u003cp\u003eHosting, domains, API usage, software subscriptions, infrastructure, wallet funding, and other third-party provider charges remain the customer's responsibility and are separate from this engagement unless explicitly included in writing.\u003c\/p\u003e\n\u003ch3\u003eWhat We Do Not Promise\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo guarantee of revenue, traffic, adoption, or marketplace acceptance\u003c\/li\u003e\n\u003cli\u003eNo guarantee that any third party, agent, or crawler will pay for access\u003c\/li\u003e\n\u003cli\u003eNo guarantee of specific technical compatibility until scope is confirmed\u003c\/li\u003e\n\u003cli\u003eNo legal, tax, accounting, security, or financial advice\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Happens Next\u003c\/h3\u003e\n\u003cp\u003eComplete the \u003ca href=\"\/pages\/project-discovery\"\u003eProject Discovery questionnaire\u003c\/a\u003e, then schedule your free consultation. We will confirm deliverables, exclusions, responsibilities, timing, and price before work begins. After we agree on scope, you receive a Shopify invoice and pay securely through Shopify.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/project-discovery\"\u003eStart Project Discovery\u003c\/a\u003e\u003c\/p\u003e","brand":"StoreFrontSignal","offers":[{"title":"Default Title","offer_id":54577015390348,"sku":null,"price":5000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3735\/4636\/files\/hf_20260828_034940_7c0b748b-b182-43d7-a142-1061369e6c41.png?v=1787889102","url":"https:\/\/storefrontsignal.com\/products\/x402-api","provider":"StoreFrontSignal","version":"1.0","type":"link"}