{"uid":"cap_gWt9GtJKLagFHbX39qPOc","slug":"x402-tools-model-pick-diagnostic-7dc8e095","name":"x402-tools Model Pick Diagnostic","description":"Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.","url":"https://openclawproductions.com/api/v1/modelpick?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"sku":"modelpick","note":"Example paid JSON shape. Not a live settle.","price":"$0.03","title":"Model Pick"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Kgi9chSZLTAruFmssc4e0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a paid diagnostic JSON payload demonstrating the x402 HTTP payment protocol with EIP-3009 authorization flow for the 'modelpick' SKU.","exampleAgentPrompt":"Can you run the x402 modelpick diagnostic against the OpenX402 facilitator and confirm whether my EIP-3009 payment authorization goes through and returns the paid JSON payload?","exampleUseCases":[{"title":"Verify x402 wallet integration","prompt":"Test my x402 setup by hitting the modelpick diagnostic endpoint — I want to confirm my EIP-3009 payment auth is wired up correctly and I get back the paid JSON, not a 402 rejection."},{"title":"Debug HTTP 402 challenge format","prompt":"Can you call the OpenX402 modelpick SKU without a payment header so I can see exactly what the HTTP 402 challenge and EIP-3009 extras look like in the response?"},{"title":"Confirm OpenX402 facilitator is live","prompt":"Probe the x402 modelpick paid endpoint through OpenX402 to check if the facilitator is up and processing $0.03 USDC payments correctly right now."}],"resultDescription":"On successful payment, returns a JSON object with fields: sku ('modelpick'), note (diagnostic message), price ('$0.03'), and title ('Model Pick'). On unpaid or failed payment attempts, returns HTTP 402 with EIP-3009 payment requirement extras in the response headers/body, indicating what authorization is needed.","failureModes":["HTTP 402 returned when no valid x402 payment header is provided — includes EIP-3009 challenge extras","Payment rejected by OpenX402 facilitator if authorization signature is malformed or expired","Incorrect facilitator used (only OpenX402 is supported; other facilitators will fail)","Insufficient USDC balance causes payment authorization to be rejected","Network or RPC issues preventing on-chain payment verification"],"whenToPreferThis":"Use this endpoint when you need to test, validate, or demonstrate the x402 HTTP payment protocol with EIP-3009 authorization flow specifically against the OpenX402 facilitator. It is ideal for developers integrating x402 into their agent wallets, verifying micropayment infrastructure, or debugging 402 challenge/response mechanics. Not appropriate for production data retrieval or AI model selection use cases.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:41:10.243Z","isFirstParty":false,"canonicalSlug":"x402-tools-model-pick-diagnostic-7dc8e095"}