{"uid":"cap_rhD3IaQ6YTUkFspPqncqx","slug":"agenteconomy-cloud-x402-endpoint-verifier-9bbd111a","name":"agenteconomy.cloud x402 Endpoint Verifier","description":"Does this x402 seller actually deliver when paid? We test the full flow as a real buyer: quote, 402 requirements validation, a real capped probe purchase, settlement and delivery — not a lint that stops before money moves. The signed verdict states exactly which steps ran and what failed: 402-again loops, wrong payTo, malformed accepts, phantom endpoints. agenteconomy.cloud (mcp-pricing-v1.1)","url":"https://mcp.agenteconomy.cloud/api/v1/check","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"endpoint":{"type":"string","maxLength":500,"description":"https:// resource URL whose x402 payment machinery to test"},"listing_id":{"type":"string","description":"optional catalog listing id — compares the advertised payTo against the cataloged seller"},"expected_payto":{"type":"string","description":"optional 0x… address you expect the endpoint to charge to; mismatch is a named finding"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.25","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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__D2vgDsfs-M7q8tH-J3dB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.25","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a full end-to-end paid test of an x402-payment endpoint, verifying quote, 402 requirements, payment settlement, and content delivery, then returns a signed verdict of what passed or failed.","exampleAgentPrompt":"Before I wire up my agent to pay this x402 endpoint at https://api.someservice.com/data, can you do a full live probe — real capped purchase and all — and tell me if it actually delivers, whether the payTo address matches 0xABC123, and exactly which steps pass or fail?","exampleUseCases":[{"title":"Pre-integration safety check for x402 endpoint","prompt":"I'm about to integrate https://api.dataprovider.com/premium-feed into my agent — can you run a real paid test against it and confirm it settles correctly, delivers content, and the payTo is 0xDEF456? I want to see the full verdict before I commit."},{"title":"Catching a broken x402 listing on the marketplace","prompt":"I found this x402 listing on the catalog with listing ID mkt-7891 — can you probe it with a real purchase and tell me if the advertised payTo address actually matches what the endpoint charges, and whether it loops on 402 or properly delivers?"},{"title":"Debugging a suspected phantom endpoint in an agent workflow","prompt":"My agent keeps failing when trying to pay https://api.suspectservice.io/resource — can you do a live x402 test on it and tell me exactly which step breaks: the quote, the 402 requirements, the payment settlement, or the delivery?"}],"resultDescription":"A signed verdict document indicating which steps of the x402 payment flow ran successfully (quote, 402 requirements validation, probe payment, settlement, delivery) and a named list of any failures such as 402-again loops, wrong payTo address, malformed accept headers, or phantom/unreachable endpoints.","failureModes":["Target endpoint is unreachable or returns non-402 errors — verdict reports phantom endpoint finding","x402 endpoint loops on 402 responses without settling — named as 402-again loop finding","payTo address in response does not match expected_payto — reported as payTo mismatch finding","Malformed accept headers on the endpoint prevent payment negotiation — reported as malformed accepts finding","Listing ID not found in catalog — listing comparison step skipped or error returned","Probe payment cap exceeded or USDC balance insufficient to complete the test purchase"],"whenToPreferThis":"Use this endpoint when you need to validate that a real x402 payment endpoint works end-to-end before integrating it into an agent workflow, or when auditing a marketplace listing for correctness. Unlike static linting tools that stop before money moves, this service executes a real capped probe purchase and reports on every stage of the payment and delivery cycle. Prefer it when payTo address verification, settlement confirmation, or delivery proof is required, especially when a listing's behavior is suspected to deviate from its advertised spec.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:33:25.342Z","isFirstParty":false}