{"uid":"cap_WtVQspyOuHn2M3IUBLbLq","slug":"x402-tools-list-check-2eb1536a","name":"x402-tools List Check","description":"Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.","url":"https://openclawproductions.com/api/v1/listcheck?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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"origin":{"type":"string","description":"Public origin URL to probe"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}},"inputSchema":{"type":"object","required":["type","properties"],"properties":{"type":{"type":"string","const":"object"},"required":{"type":"array","items":{"type":"string"}},"properties":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"sku":"listcheck","note":"Example paid JSON shape. Not a live settle.","price":"$0.02","title":"List Check"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JXEgX8SUA8S2w4vSwKqGx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Probes a public origin URL to diagnose its x402 payment-gating configuration and returns diagnostic details including EIP-3009 payment extras.","exampleAgentPrompt":"Can you run an x402 listcheck diagnostic on https://example.com to see if it's properly payment-gated and what EIP-3009 payment details it returns?","exampleUseCases":[{"title":"Verify x402 integration before launch","prompt":"I just added x402 payment gating to my API at https://myapi.example.com — can you probe it with the x402 listcheck tool to confirm it's returning a proper 402 with EIP-3009 extras?"},{"title":"Debug a broken x402 payment gate","prompt":"My users are complaining that https://content.mysite.io isn't returning proper payment info — can you run an x402 diagnostic on that origin to see what's wrong with the 402 response?"},{"title":"Audit competitor's x402 payment setup","prompt":"Can you check what x402 payment configuration https://api.thirdparty.com is using — specifically what EIP-3009 extras they return when you hit a paid SKU without payment?"}],"resultDescription":"A JSON diagnostic report describing the x402 payment-gate status of the probed origin URL, including HTTP 402 response details, EIP-3009 payment extras, required payment SKUs, and facilitator information (OpenX402).","failureModes":["Origin URL is not reachable — connection timeout or DNS failure","Origin does not implement x402 — no 402 response returned, empty or unexpected diagnostic","Malformed origin parameter — missing or invalid URL format","Payment not provided — this endpoint itself costs $0.02 USDC per call via x402; unpaid requests return HTTP 402","Origin URL returns 402 but lacks valid EIP-3009 extras — partial diagnostic returned"],"whenToPreferThis":"Use this endpoint when you need to programmatically diagnose or verify that a remote origin URL is correctly configured for x402 payment gating, especially when you need to inspect EIP-3009 payment extras. Prefer this over manual curl inspection when you need structured JSON output about the payment requirements of an endpoint.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T00:48:54.570Z","isFirstParty":false,"canonicalSlug":"x402-tools-list-check-2eb1536a"}