{"uid":"cap_gBgAwC4LkPSiDQFFURK7T","slug":"halowerk-tempo-stylesheet-render-blocking-resources-check-177a3ae7","name":"Halowerk Tempo – Stylesheet Render-Blocking Resources Check","description":"Prüft am Objekt stylesheet den Befund Zahl renderblockierender Ressourcen.","url":"https://tempo.halowerk.com/v1/pruef/tempo/blockierer/stylesheet","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"ziel":{"oneOf":[{"type":"string","maxLength":2048,"minLength":1,"description":"Öffentliche HTTP(S)-Adresse; bei DNS-Befunden Domain oder öffentliche IP."},{"type":"object","required":["adresse"],"properties":{"adresse":{"type":"string","maxLength":2048,"minLength":1},"selektor":{"type":"string","maxLength":240,"minLength":1,"description":"CSS-Selektor: genau ein Objekt, sonst erster Treffer des Objektfilters."},"vergleich":{"type":"string","maxLength":2048,"description":"Öffentliche Vergleichsadresse für Link-, Sitemap- oder Sprachbefunde."},"user_agent":{"type":"string","pattern":"^[A-Za-z0-9_-]{1,80}$"},"dkim_selektor":{"type":"string","pattern":"^[A-Za-z0-9_-]{1,63}$"}},"additionalProperties":false}]}}},"responseSchema":null,"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_WZQhaVMJV_dZHQRNpe2vF","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":"Checks a public URL and counts the number of render-blocking stylesheet resources found on the page.","exampleAgentPrompt":"Can you check how many render-blocking stylesheet resources are on https://example.com and tell me the count?","exampleUseCases":[{"title":"Pre-launch page speed audit","prompt":"Before we go live, can you check how many render-blocking stylesheets are on https://myshop.com so we know what's slowing down the initial render?"},{"title":"Competitor performance benchmarking","prompt":"Check https://competitor-site.com and tell me how many render-blocking CSS resources they have — I want to compare their stylesheet performance to ours."},{"title":"Monitoring after CSS refactor","prompt":"We just refactored our stylesheet loading on https://myblog.com — can you check how many render-blocking stylesheet resources remain on the page now?"}],"resultDescription":"Returns a performance finding indicating the number of render-blocking stylesheet resources detected on the target page, helping identify CSS files that delay initial page rendering.","failureModes":["Invalid or non-public URL returns a validation error","URL is unreachable or returns a non-200 status, resulting in a connection error","CSS selector matches no elements or multiple elements (first match used)","Target site blocks automated requests, leading to incomplete or failed analysis","Timeout if the target page loads too slowly"],"whenToPreferThis":"Use this endpoint when you specifically need to count render-blocking stylesheet resources on a webpage as part of a performance audit or monitoring workflow. It is distinct from sibling endpoints that check iframes or fonts for render-blocking issues, or stylesheets for other metrics like DNS resolution time or connection setup time.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:02:33.021Z","isFirstParty":false}