{"uid":"cap_xStBlLxzcJJEW2vU-Yg_1","slug":"gatecheck-by-larrybuildsai-x402-agent-tool-preflight-scanner-21d28dbb","name":"GateCheck by LarryBuildsAI – x402 Agent Tool Preflight Scanner","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/x402/scan","method":"GET","headers":{},"bodySchema":{"type":"object","required":["url"],"properties":{"url":{"type":"string"},"marketplace_url":{"type":"string"},"expected_resources":{"type":"integer"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.25","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":"$0.25/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_A2chasAjyR7dv7ZzvIRFo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.25","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs preflight readiness checks on a URL to verify it is properly configured as a paid x402 agent tool before marketplace listing, including seller-readiness, unpaid path probes, and launch-pack artifact validation.","exampleAgentPrompt":"Run GateCheck preflight scans on https://my-agent-tool.example.com before I list it — I'm expecting 3 paid resources and my marketplace listing is at https://marketplace.example.com/tools/my-tool.","exampleUseCases":null,"resultDescription":"Returns a preflight report covering x402 seller-readiness status, results of unpaid path probes against the target URL, and validation of launch-pack artifacts required for marketplace listing, including pass/fail details for each check.","failureModes":["Target URL is unreachable or returns unexpected status codes","URL does not implement x402 payment headers correctly, causing probe failures","Expected resource count mismatch triggers validation error","Marketplace URL is invalid or inaccessible","Endpoint times out if target server is slow to respond","Missing launch-pack artifacts cause listing readiness to fail"],"whenToPreferThis":"Use this endpoint when you need to programmatically verify that a paid x402 agent tool endpoint is correctly configured and ready for marketplace listing — specifically when you want automated seller-readiness checks, unpaid path probing, and launch-pack artifact validation in one call, rather than manually inspecting x402 headers or guessing at compliance.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:29:21.243Z","isFirstParty":false}