{"uid":"cap_puyEL78fVDt4qlV5H9Ygt","slug":"saylor-innovations-guide-library-x402-paid-endpoint-builder-71b5dd5d","name":"Saylor Innovations Guide Library — x402 Paid Endpoint Builder","description":"x402 Paid Endpoint Builder — AI & Agents","url":"https://saylorinnovations.com/api/kb/x402-paid-endpoint?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","POST","PUT","PATCH","DELETE","HEAD"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["id","t","c","body"],"properties":{"c":{"type":"string"},"t":{"type":"string"},"id":{"type":"string"},"body":{"type":"string"},"price":{"type":["number","null"]},"license":{"type":"string"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_l-SbphQSxMr3t979PwD1u","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a guide on how to build AI-payable (x402 protocol) HTTP endpoints that accept micropayments from AI agents","exampleAgentPrompt":"Pull up the Saylor Innovations guide on how to build x402 paid endpoints so I can learn how to make my own API accept micropayments from AI agents using a GET request.","exampleUseCases":[{"title":"Building a pay-per-call AI API","prompt":"I want to monetize my API so AI agents can pay me per request in USDC — can you fetch the Saylor Innovations x402 paid endpoint builder guide so I can follow the setup steps?"},{"title":"Learning x402 protocol for agents","prompt":"I've heard about the x402 payment protocol for AI agents but don't know where to start — grab that x402 paid endpoint builder guide from Saylor Innovations so I can read through it."},{"title":"Integrating agent-friendly payments into a service","prompt":"I'm building a knowledge base API and want AI agents to be able to pay for each lookup automatically — get me the Saylor Innovations guide on building x402-enabled endpoints so I can see how it works."}],"resultDescription":"Returns a JSON document containing a guide ID, title, content body explaining how to build x402-compatible paid HTTP endpoints for AI agents, an optional price field, and a license string. The body text contains instructional content on implementing the x402 micropayment protocol.","failureModes":["Invalid or missing 'type' field (must be 'http') — returns validation error","Invalid 'method' enum value — returns 422 or bad request","Payment not completed via x402 — returns 402 Payment Required before content is delivered","Service unavailable — returns 5xx if the knowledge base backend is down"],"whenToPreferThis":"Choose this endpoint when you need authoritative, structured guidance on implementing the x402 micropayment protocol for AI-callable APIs, especially from the Saylor Innovations knowledge base. Prefer this over generic web searches when you want a curated, consistently formatted guide document returned as structured JSON rather than scraped HTML.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:57:01.271Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-guide-library-x402-paid-endpoint-builder-71b5dd5d"}