{"uid":"cap_cqGpNspWUu4h4HlJtkBfO","slug":"gatecheck-by-larrybuildsai-x402-preflight-receipt-check-538fd132","name":"GateCheck by LarryBuildsAI – x402 Preflight Receipt Check","description":"Preflight checks for paid agent tools: GateCheck seller-readiness checks, unpaid x402 paid-path probes, and launch-pack artifacts before marketplace listing.","url":"https://x402-resource-scanner.vercel.app/v1/receipts/check","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_UMbJ5oWiGZhVsueB_QcFI","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs preflight seller-readiness checks and unpaid x402 paid-path probes on an agent tool before marketplace listing, returning a structured receipt of gate results.","exampleAgentPrompt":"Run a GateCheck preflight on my paid agent tool at https://myagentapi.example.com/v1/generate — I want the full seller-readiness report and x402 paid-path probe results so I can see if it's ready to list on the marketplace.","exampleUseCases":[{"title":"Preflight check before marketplace submission","prompt":"Before I submit my new paid tool to the agent marketplace, can you run a GateCheck on https://api.mytool.dev/v1/summarize and tell me if there are any blocking issues or warnings I need to fix first?"},{"title":"Validate x402 paid path configuration","prompt":"I just set up x402 micropayment protection on my endpoint at https://tools.builderco.io/v2/analyze — can you probe it with GateCheck to confirm the paid path is configured correctly and I'll get a proper receipt back?"},{"title":"Audit agent tool launch readiness","prompt":"I'm about to go live with my x402-protected agent tool at https://agentapi.launchpad.xyz/v1/classify — run a full GateCheck audit on it and show me the seller-readiness results and any launch-pack artifacts so I know it's good to go."}],"resultDescription":"Returns a structured receipt containing seller-readiness check results, x402 paid-path probe outcomes (unpaid probes only), and launch-pack artifacts indicating whether the tool is ready for marketplace listing, including any blocking issues or warnings.","failureModes":["Target URL is unreachable or returns non-x402 response — probe fails with connection or format error","Tool endpoint is not x402-compliant — returns gate failure with specific misconfiguration details","Invalid or missing target URL in request body — returns 400 bad request","Endpoint times out during probe — returns timeout error in receipt","x402 payment header misconfigured on target — probe reports payment-path failure"],"whenToPreferThis":"Use this endpoint when you are a developer or agent builder who needs to validate that a paid x402 agent tool endpoint is correctly configured and seller-ready before submitting it to an agent marketplace. It is specifically designed for the x402 micropayment ecosystem and produces structured receipts with launch-pack artifacts, making it the right choice over generic HTTP probers or uptime checkers.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:34:03.964Z","isFirstParty":false}