{"uid":"cap_74pIvjZThK9d1IWgS7GvS","slug":"stealthguard-x402-endpoint-verifier-6a357d83","name":"StealthGuard x402 Endpoint Verifier","description":"Audits target x402 endpoints for authentic payTo wallet, pricing, challenge headers, and schema hijack risks.","url":"https://stealthguard-402.onrender.com/v1/security/x402-endpoint-verifier?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"endpoint_url":{"type":"string","description":"Target x402 endpoint URL to audit"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kOlxeZmwsdkw3higED7iT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Audits x402 payment endpoints for wallet authenticity, pricing integrity, challenge header validity, and schema hijack risks","exampleAgentPrompt":"Before I pay that x402 API, audit it for me — check whether the payTo wallet is authentic, the pricing is what it claims, the challenge headers are valid, and there are no schema hijack risks. The endpoint is POST https://someapi.example.com/v1/data.","exampleUseCases":[{"title":"Pre-payment wallet authenticity check","prompt":"I'm about to have my agent pay an x402 endpoint at https://dataservice.example.com/v1/feed — can you verify the payTo wallet address is real and not a drainer before any USDC leaves my wallet?"},{"title":"Schema hijack risk scan before agent loop","prompt":"My autonomous agent is about to start calling https://agentapi.example.com/infer in a loop using x402 payments — scan it first for schema hijacking or pricing manipulation risks so I know it's safe to automate."},{"title":"Challenge header validation for x402 integration","prompt":"I'm integrating a third-party x402 API at https://partnerservice.io/api/process into my workflow — audit its challenge headers and pricing claims to make sure everything checks out before I wire it into my agent pipeline."}],"resultDescription":"Returns an audit report covering: authenticity of the payTo wallet address, correctness and consistency of pricing headers, validity of x402 challenge headers, and any detected schema hijack or manipulation risks — structured as a security verdict that an agent can act on before initiating payment.","failureModes":["Target endpoint is unreachable or returns non-x402 response","Malformed input body or missing required fields causes 400 error","Target endpoint uses non-standard x402 schema that cannot be parsed","Inconclusive wallet verification if on-chain data is unavailable","Timeout if the target endpoint is slow to respond to challenge probes"],"whenToPreferThis":"Use this endpoint when an AI agent is about to pay an x402 endpoint and needs a security gate to verify the payment target is legitimate. Prefer this over manual inspection when automating x402 payment flows, integrating unknown third-party x402 APIs, or running agent pipelines where wallet drainer or schema hijack attacks are a concern. Especially valuable before looping payments or high-frequency autonomous agent calls.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T06:34:35.973Z","isFirstParty":false,"canonicalSlug":"stealthguard-x402-endpoint-verifier-6a357d83"}