{"uid":"cap_S5KV49trox-Aj1e0wswzi","slug":"vextorium-x402-endpoint-inspector-37a599fa","name":"Vextorium x402 Endpoint Inspector","description":"Check any x402 endpoint before paying, without paying: price in USD per network, asset (flags anything that is not official USDC), pay-to address and whether it is a contract, authorization timeout, Bazaar metadata, and risk alerts with a clear verdict.","url":"https://api.vextorium.com/v1/x402-inspect?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":["url"],"properties":{"url":{"type":"string","description":"Full URL of the x402 endpoint"},"body":{"type":"object","description":"Optional JSON body to send (some endpoints price by input)"},"method":{"enum":["POST","GET"],"type":"string","description":"HTTP method (POST default, or GET)"}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":["object","null"],"properties":{"url":{"type":["string","null"]},"note":{"type":["string","null"]},"alerts":{"type":["array","null"],"items":{"type":["null","object"],"properties":{"level":{"type":["string","null"]},"message":{"type":["string","null"]}}}},"is_x402":{"type":["boolean","null"]},"verdict":{"type":["string","null"]},"description":{"type":["string","null"]},"version_x402":{"type":["number","null"]},"response_type":{"type":["string","null"]},"bazaar_profile":{"type":["boolean","null"]},"payment_options":{"type":["array","null"],"items":{"type":["null","object"],"properties":{"asset":{"type":["null","string"]},"pay_to":{"type":["null","string"]},"schema":{"type":["null","string"]},"network":{"type":["null","string"]},"price_usd":{"type":["null","number"]},"network_name":{"type":["null","string"]},"units_amount":{"type":["null","string"]},"max_time_seconds":{"type":["null","number"]},"pay_to_is_contract":{"type":["boolean","null"]},"asset_is_official_usdc":{"type":["boolean","null"]}}}}}}}}}},"responseSchema":{"type":"json","example":{"url":"https://api.vextorium.com/validar-iban-pago","note":"Inspection without paying. Always check that the payee address is the one you expect.","alerts":[{"level":"info","message":"On Base the recipient is a contract, not a regular wallet."}],"is_x402":true,"verdict":"ok","description":"IBAN validation (ISO 13616 mod-97 and per-country length, SEPA membership; for Spain also the national CCC check digits and bank name). Computed locally, IBA...","version_x402":2,"response_type":"application/json","bazaar_profile":true,"payment_options":[{"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","pay_to":"HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2","schema":"exact","network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","price_usd":0.003,"network_name":"Solana","units_amount":"3000","max_time_seconds":300,"pay_to_is_contract":null,"asset_is_official_usdc":true},{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf","schema":"exact","network":"eip155:8453","price_usd":0.003,"network_name":"Base","units_amount":"3000","max_time_seconds":300,"pay_to_is_contract":true,"asset_is_official_usdc":true}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rNw3Yl0is4ntHyJpL3S2w","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Inspects any x402 payment-gated endpoint before paying, returning pricing, asset details, payee address risk, authorization timeout, Bazaar metadata, and a clear risk verdict.","exampleAgentPrompt":"Before my agent pays for that x402 endpoint at https://api.example.com/v1/some-service, can you inspect it and tell me the price, the pay-to address, whether it's a contract, what network it's on, and if there are any risk alerts?","exampleUseCases":[{"title":"Safe payment check before agent call","prompt":"My AI agent is about to pay and call https://api.someservice.com/generate — can you inspect that x402 endpoint first and tell me the USD price, whether the USDC is official, if the recipient is a contract, and give me a risk verdict before any money moves?"},{"title":"Auditing unknown x402 API for suspicious address","prompt":"I found this x402 endpoint at https://thirdparty.io/api/data and I'm not sure I trust it — can you check the pay-to address, see if it's a smart contract, flag any alerts, and tell me if the asset is real USDC on all supported networks?"},{"title":"Comparing x402 pricing across networks","prompt":"What does the x402 endpoint at https://api.vextorium.com/validar-iban-pago actually cost on each supported network, and is the payment going to a contract or a regular wallet? Give me the full breakdown without paying."}],"resultDescription":"Returns a structured JSON object with: the inspected URL, is_x402 boolean, x402 protocol version, response content type, verdict string (e.g. 'ok' or a risk label), an array of risk alerts with severity levels and messages, a list of payment_options each containing network name, USD price, asset address, official USDC flag, pay-to address, contract flag, unit amount, and max authorization time in seconds, plus a Bazaar profile flag and a note reminding the caller to verify the payee address independently.","failureModes":["Target URL is not an x402 endpoint (is_x402: false, no payment_options returned)","Target URL is unreachable or times out (network error response)","Asset is non-standard or non-USDC token (flagged in alerts, asset_is_official_usdc: false)","Pay-to address is a smart contract without clear explanation (alert level warning or error)","Bazaar profile absent for unknown endpoint (bazaar_profile: false, may increase risk)","Malformed URL input causes validation error before inspection"],"whenToPreferThis":"Use this endpoint whenever an AI agent or user needs to evaluate an x402-gated API before committing payment — especially to detect non-standard assets, smart contract payees, unusual authorization timeouts, or missing Bazaar profiles. Prefer this over blindly calling and paying x402 endpoints, particularly for unfamiliar or third-party APIs. It is the right choice when the primary concern is pre-payment risk assessment rather than actually invoking the underlying service.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T18:42:11.000Z","isFirstParty":false,"canonicalSlug":"vextorium-x402-endpoint-inspector-37a599fa"}