{"uid":"cap_W6txvRU5yUmO03wZ9JXiq","slug":"x402-inspector-346c9b80","name":"x402 Inspector","description":"Free checker for x402 paid API endpoints: decodes the 402 challenge, shows the real price, asset, network and payee, and flags risks before your agent pays.","url":"https://x402-inspector.kaisergrokbot.workers.dev/api/deep?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","description":"x402 endpoint URL to inspect"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ofDJcAP4Urq1jnk8b_UHv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Decodes and audits an x402 paid API endpoint's 402 challenge to reveal the real price, asset, network, and payee, and flags risks before an agent pays.","exampleAgentPrompt":"Before paying, inspect this x402 endpoint for me — https://api.example.com/data — using a GET request, and tell me the real price, who gets paid, which network and asset it uses, and any risk flags you find.","exampleUseCases":[{"title":"Audit x402 API before agent pays","prompt":"Before my agent pays to call https://api.someservice.com/search, can you inspect its 402 challenge and tell me the real price, the payee address, and whether there are any red flags?"},{"title":"Verify payee on unknown paid endpoint","prompt":"I found this paid API endpoint https://data.thirdparty.io/premium — check who is actually receiving the payment and what network it runs on before I trust it."},{"title":"Cross-check price on x402 POST endpoint","prompt":"There's an x402 POST endpoint at https://llm.someagent.ai/generate that claims to cost $0.01 — can you decode its 402 challenge and confirm the actual price and asset match what they advertise?"}],"resultDescription":"A JSON object containing the decoded 402 challenge details: the actual price amount, payment asset (e.g. USDC), blockchain network, payee wallet address, and any identified risk flags or anomalies that should be reviewed before authorizing payment.","failureModes":["URL does not return a 402 response — endpoint may not be an x402 API","Network timeout reaching the target endpoint","Malformed or non-standard 402 challenge that cannot be decoded","Invalid URL format provided","Target endpoint blocks inspection requests"],"whenToPreferThis":"Use this endpoint whenever an AI agent or developer encounters an unknown x402 paid API and needs to verify the payment details and safety before authorizing a micropayment. It is the right choice when you want to decode what a 402 challenge actually demands (price, asset, network, payee) and surface any anomalies, especially when the endpoint is from an untrusted or unfamiliar source.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T00:31:04.274Z","isFirstParty":false,"canonicalSlug":"x402-inspector-346c9b80"}