{"uid":"cap_8ROtya971eMecJVa-EqaW","slug":"tempo-halowerk-iframe-render-start-time-check-bedaf0e6","name":"Tempo Halowerk – iframe Render Start Time Check","description":"Prüft am Objekt iframe den Befund Zeit bis zum sichtbaren Renderstart.","url":"https://tempo.halowerk.com/v1/pruef/tempo/renderstart/iframe","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_D_F98LKnZj_7auNgMvRQx","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-first-render (render start) of an iframe object on a given web page, returning a performance audit result.","exampleAgentPrompt":"Check how long it takes for the iframe on https://example.com/embed-page to start rendering visibly — I want the render start time performance metric for that iframe.","exampleUseCases":[{"title":"Diagnose slow iframe on landing page","prompt":"My landing page at https://shop.example.com has an embedded payment iframe and users are complaining it feels slow — can you measure the render start time for that iframe and tell me how long it takes to become visible?"},{"title":"Performance audit before site launch","prompt":"Before we go live, check the iframe render start time for https://staging.myapp.io/checkout so I can confirm it meets our performance targets."},{"title":"Monitor third-party embed performance","prompt":"I've embedded a YouTube iframe on https://myblog.com/video-post — can you measure how long that iframe takes to start rendering so I know if it's hurting page load experience?"}],"resultDescription":"Returns a performance measurement indicating the time elapsed until the iframe element begins its visible render (render start), expressed as a duration metric. This may include timing data scoped to the specific iframe object on the target page.","failureModes":["Target URL is not publicly accessible — returns an error or timeout","No iframe found on the target page — audit returns no result or an object-not-found error","CSS selector matches zero or multiple elements — first match is used or error returned","Invalid or malformed URL input — validation error","Page requires authentication or blocks headless browsers — measurement fails or returns incomplete data"],"whenToPreferThis":"Use this endpoint when you specifically need to measure the time-to-render-start metric for an iframe element on a public web page. It is distinct from full-page render timing, first contentful paint, or time-to-first-byte checks. Choose this when diagnosing or benchmarking embedded content (third-party widgets, payment forms, video embeds) and you need iframe-scoped render start latency rather than general page performance.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:03:49.434Z","isFirstParty":false}