{"uid":"cap_EH5UZhOkEhg2WFN1EPeIi","slug":"tempo-halowerk-com-font-render-blocking-resources-check-fbd1a2df","name":"tempo.halowerk.com – Font Render-Blocking Resources Check","description":"Prüft am Objekt schrift den Befund Zahl renderblockierender Ressourcen.","url":"https://tempo.halowerk.com/v1/pruef/tempo/blockierer/schrift","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_Bu_Y4YykLo0te8EbhVX1l","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 the number of render-blocking font resources on a given web page or font asset URL.","exampleAgentPrompt":"Check how many render-blocking font resources are on https://www.example.com and tell me if any fonts are blocking the page from loading.","exampleUseCases":[{"title":"Font performance audit before launch","prompt":"Before we launch the new site, can you check https://www.mybrand.com for any render-blocking font resources so we know if fonts are slowing down the initial page render?"},{"title":"Diagnose slow homepage load","prompt":"Our homepage at https://shop.acmecorp.com feels sluggish — can you check whether any font resources are blocking rendering and tell me how many there are?"},{"title":"Monitor font blocking on landing page","prompt":"Run a check on https://landing.startupxyz.io and tell me the number of render-blocking font resources — I want to track this weekly to see if our optimizations are working."}],"resultDescription":"Returns a structured audit finding (Befund) indicating the count of render-blocking font resources detected on the specified page or font object, enabling developers to identify performance bottlenecks caused by blocking font loads.","failureModes":["URL is not publicly accessible — returns an error or unreachable status","URL is too long or malformed — rejected by schema validation (maxLength 2048)","CSS selector matches no element or multiple elements — first match used or error returned","Target page has no font resources — count returns zero","Timeout fetching the target URL — may return a timeout or empty result","Non-HTTP(S) URL provided — rejected by input validation"],"whenToPreferThis":"Use this endpoint when you specifically need to audit render-blocking font resources on a webpage, as part of web performance analysis or Core Web Vitals optimization workflows. Prefer this over generic page-speed tools when you need a programmatic, per-check result that can be integrated into CI/CD pipelines or automated monitoring. Especially useful when diagnosing slow above-the-fold render times suspected to be caused by font loading.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:53:04.849Z","isFirstParty":false}