{"uid":"cap_CPSH_8nha6FjrorTFhPfY","slug":"api-dev-agents-skillfulai-io-77e755a3","name":"SkillfulAI X402 Demo Premium Endpoint (Mainnet)","description":"Demo X402 premium endpoint (mainnet) - pay $0.01 USDC","url":"https://api-dev.agents.skillfulai.io/api/x402/demo/mainnet/premium?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"object","required":["message","tier","payment"],"properties":{"tier":{"enum":["premium"],"type":"string","description":"Access tier level"},"message":{"type":"string","description":"Welcome message for premium users"},"payment":{"type":"object","properties":{"payer":{"type":"string","description":"Payer wallet address"},"network":{"type":"string","description":"Payment network"},"settled":{"type":"boolean"},"verified":{"type":"boolean"},"amount_paid":{"type":"string","description":"Amount paid in atomic units"},"transaction_hash":{"type":"string","description":"On-chain transaction hash"}},"description":"Payment verification and settlement details"}}},"example":{"request":{"asset":"USDC","network":"base-mainnet","paymentAmount":"0.01","recipientEmail":"zero-qa@agentmail.to","notifyOnCompletion":true},"response":{"tier":"premium","message":"Welcome to the premium mainnet endpoint!","payment":{"payer":"0x9CC42f3d9245B867ACccd630B43f906c1665b176","network":"base","settled":true,"verified":true,"amount_paid":"10000","transaction_hash":"0x4d2e081400ac51765b8f81f29c758ac6f4265ab59ae34c0a1d9d5a0c48bfc5ce"}}},"exampleRequest":{"asset":"USDC","network":"base-mainnet","paymentAmount":"0.01","recipientEmail":"zero-qa@agentmail.to","notifyOnCompletion":true},"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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_pYhkjQgTnbV9_E4x4yDul","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Accepts a $0.01 USDC micropayment on Base mainnet via the X402 protocol and returns a premium-tier welcome message with payment verification details.","exampleAgentPrompt":"Run the SkillfulAI premium demo on mainnet — pay the $0.01 USDC fee from my wallet and show me the payment confirmation including the transaction hash and whether settlement was verified.","exampleUseCases":null,"resultDescription":"Returns a JSON object with: a 'premium' tier enum confirming access level, a welcome message string for premium users, and a payment object containing the payer wallet address, network name, settlement boolean, verification boolean, amount paid in atomic units, and the on-chain transaction hash.","failureModes":["Payment not included or malformed X402 header → 402 Payment Required with accepted payment schemes","Insufficient USDC balance in wallet → payment failure before request reaches endpoint","Wrong network (non-Base mainnet) → payment rejected or unverified","Incorrect asset address (non-USDC) → payment not accepted","Transaction not yet confirmed on-chain → settled: false, verified: false","Endpoint temporarily unavailable → 5xx error"],"whenToPreferThis":"Use this endpoint when you need to demonstrate or test the X402 pay-per-call protocol on Base mainnet with real USDC. Ideal for verifying that an AI agent can autonomously handle micropayment-gated APIs, or for integration testing of X402 payment flows before building production pay-per-call services. Not suitable for retrieving actual business data — this is a demo/test endpoint.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T12:35:32.682Z","isFirstParty":false,"canonicalSlug":"api-dev-agents-skillfulai-io-77e755a3"}