{"uid":"cap_dAX1UtReUcUDUhWQXMmE6","slug":"supremeai-url-health-check-76e0cf62","name":"SupremeAI URL Health Check","description":"Pay-per-call tools for AI agents: x402 pre-flight checks (is this endpoint safe to pay?), web pages as clean markdown (with optional JavaScript rendering), Latin American tax-ID validation, npm/PyPI/GitHub lookups, and URL health checks. No API keys, no accounts — pay per request in USDC.","url":"https://agents.supremeai.ca/v1/health-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","description":"absolute http(s) URL"}}},"responseSchema":{"type":"json","example":{"up":true,"url":"https://example.com","status":200,"latency_ms":42}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ziAXKbLE0g5hMmZrHDUIo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Probes a public HTTP(S) URL and returns its availability status (up/down), HTTP status code, and response latency in milliseconds","exampleAgentPrompt":"Before we call that paid weather API, can you ping https://api.weather.example.com/v1/forecast to make sure it's up and responding quickly — I don't want to waste money if it's down?","exampleUseCases":[{"title":"Pre-flight check before paid API call","prompt":"Check if https://api.openai.com/v1/chat/completions is live and responding before I send my batch job — what's the HTTP status and latency right now?"},{"title":"Debugging a failing integration","prompt":"My app keeps timing out when hitting https://payments.example.com/v1/charge — can you probe that URL and tell me if it's actually up or if it's returning an error?"},{"title":"Monitoring an x402 service before purchase","prompt":"I want to use that x402 transcription service at https://agents.example.com/v1/transcribe but I don't want to pay if it's down — can you check whether it's reachable first?"}],"resultDescription":"Returns whether the target URL is up or down, the HTTP status code returned by the server, and the round-trip latency in milliseconds. This allows agents to make informed decisions about whether to proceed with a subsequent (potentially paid) API call.","failureModes":["Target URL is unreachable or DNS fails — returns down status with no HTTP code","Target URL is not a public internet address (private IP, localhost) — rejected with validation error","Malformed or non-HTTP(S) URL provided — input validation error","Target server responds with a timeout — latency may be null or capped","Network errors from the probe host itself — may return ambiguous down status"],"whenToPreferThis":"Use this endpoint when you need a cheap ($0.003) pre-flight check before invoking a more expensive or side-effecting API, especially paid x402 services. It is ideal when you want to avoid wasting credits or money on a downstream service that may be unavailable. Prefer this over a full API call when all you need is a binary up/down signal and response time, not actual data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:37:27.227Z","isFirstParty":false,"canonicalSlug":"supremeai-url-health-check-76e0cf62"}