{"uid":"cap_mo5FubPBcGl7iyT7qoq24","slug":"tempo-halowerk-script-time-to-first-paint-checker-af852d80","name":"Tempo Halowerk – Script Time-to-First-Paint Checker","description":"Prüft am Objekt skript den Befund Zeit bis zum sichtbaren Renderstart.","url":"https://tempo.halowerk.com/v1/pruef/tempo/renderstart/skript","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_0MH9M9ZLEEc2NzkchLRDN","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":"Measures the time-to-visible-render-start (first paint) for a script object at a given public URL.","exampleAgentPrompt":"Check how long it takes for the script at https://cdn.example.com/app.js to start visibly rendering — give me the time-to-first-paint figure.","exampleUseCases":[{"title":"Third-party script render audit","prompt":"I want to know how much a third-party analytics script at https://analytics.vendor.com/tracker.js is delaying the visible render start on my site — can you measure the time-to-first-paint for that script?"},{"title":"CI performance gate for JS bundles","prompt":"Before we ship this release, check the render start time for our main bundle at https://app.mysite.com/static/main.bundle.js so we can catch any regressions in visible paint timing."},{"title":"A/B comparison of script load strategies","prompt":"I'm testing two versions of our script loader — can you measure the time-to-visible-render-start for https://mysite.com/v1/loader.js so I have a baseline to compare against the new version?"}],"resultDescription":"Returns the measured time-to-visible-render-start (first paint) for the specified script resource, expressed as a duration value. This is the performance finding for the 'skript' object type scoped to 'renderstart' timing.","failureModes":["Target URL is not publicly reachable — connection refused or DNS failure","URL exceeds the 2048-character maximum length","Script resource returns a non-200 HTTP status, making timing measurement impossible","CSS selector provided matches no element or is ambiguous","Rendering environment times out waiting for paint event","Invalid or malformed URL provided in the 'ziel' field"],"whenToPreferThis":"Choose this endpoint when you specifically need the time-to-visible-render-start metric for a script resource (as opposed to DNS resolution time, TTFB, or total load time). It is ideal for diagnosing render-blocking JavaScript, auditing third-party script impact on perceived performance, or setting CI gates on first-paint timing for JS bundles.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:55:55.899Z","isFirstParty":false}