{"uid":"cap_ABkoMAxgAjT3SeefHoP_K","slug":"horizon-pulse-x402-deep-check-b5c7ef8e","name":"Horizon Pulse x402 Deep Check","description":"x402 endpoint deep check, never pays or signs: the full /api/x402-check report plus live checks. GET url (optional method, body). Adds TLS, security headers, CORS, payTo vs the payee's own published addresses (/.well-known/x402, openapi.json, llms.txt), lookalike payTo detection, and drift between the live 402 and well-known, openapi and CDP Bazaar listings. Any HTTP answer from the target is billed; bad input, blocked hosts and timeouts are not.","url":"https://horizonpulse.dev/api/x402-check/deep?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["url"],"properties":{"url":{"type":"string","description":"Absolute http(s) URL of the x402 endpoint to check (required). Private/localhost blocked."},"body":{"type":"string","description":"Optional JSON body (<=8KB, URL-encoded) sent with a POST probe. Implies POST."},"method":{"type":"string","description":"HTTP method for the unpaid probe: GET (default; one POST retry on 405) or POST."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","description":"Horizon Pulse x402 deep check: x402-check report plus TLS, security headers, CORS, payTo vs published addresses, lookalike payTo, discovery drift. The example is a trimmed real response recorded from GET /api/demo/x402-check-deep at 2026-10-19T19:46Z UTC; live values differ on every call."}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_x5Siznuf8XopT6gJGVQcD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a comprehensive security and compliance audit of an x402 payment endpoint, including TLS, security headers, CORS, payTo address verification, lookalike detection, and discovery drift analysis — without paying or signing.","exampleAgentPrompt":"Before my agent starts paying this API, can you do a full deep security check on https://api.example.com/generate — verify the payTo address matches their published addresses, check TLS and security headers, look for lookalike fraud, and see if the live 402 response drifts from their well-known or Bazaar listings?","exampleUseCases":[{"title":"Pre-integration fraud check for x402 API","prompt":"I found an x402 API at https://payments.someservice.io/api/summarize and want to use it in my agent — can you do a deep check to make sure the payTo address is legit and matches what they've published in their well-known and OpenAPI docs, and flag any lookalike wallet addresses?"},{"title":"Security audit before agent deployment","prompt":"Before I deploy my agent to use https://data.cryptoapi.xyz/api/prices, run a full deep security audit — I need to know if TLS is solid, security headers are set correctly, CORS is configured safely, and whether the 402 payment terms match their CDP Bazaar listing."},{"title":"Discovery drift investigation for known x402 endpoint","prompt":"Something feels off about https://api.aitools.dev/v1/chat — can you check if the live 402 response has drifted from what's listed in their well-known file and OpenAPI spec, and tell me if the payTo address looks like a lookalike or has changed?"}],"resultDescription":"A detailed deep-check report covering: TLS certificate validity and configuration, HTTP security headers presence/quality, CORS policy analysis, the decoded x402 payment terms (payTo address, price, accepted tokens), comparison of payTo against addresses published in /.well-known/x402, openapi.json, and llms.txt, lookalike/typosquatting detection on the payTo address, and drift analysis between the live 402 response and the endpoint's well-known, OpenAPI, and CDP Bazaar listings.","failureModes":["Bad input URL (private/localhost/blocked host) — not billed, returns error immediately","Target URL timeout — not billed","Target returns non-HTTP error (DNS failure, connection refused) — not billed","Any HTTP response from target (including 4xx/5xx) — billed at $0.03","Well-known or OpenAPI docs unreachable — partial report with missing comparison fields","CDP Bazaar listing not found — drift check skipped for that source"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, one-call security and authenticity audit of an x402 endpoint before paying it — especially when you want to verify payTo addresses against multiple published sources, detect potential fraud or drift, and assess TLS/CORS/header security. Prefer this over the basic x402-check endpoint when fraud risk, address verification, and discovery drift are important, or when integrating a new x402 API into an automated agent workflow where payment mistakes are costly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T00:21:56.853Z","isFirstParty":false,"canonicalSlug":"horizon-pulse-x402-deep-check-b5c7ef8e"}