{"uid":"cap_eh0GGBDhZxwkAM8dZXdzO","slug":"tempo-halowerk-com-image-ttfb-checker-37f1b516","name":"tempo.halowerk.com Image TTFB Checker","description":"Prüft am Objekt bild den Befund Zeit bis zum ersten Byte.","url":"https://tempo.halowerk.com/v1/pruef/tempo/ttfb/bild","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_GPmwy-6Dsf7LrkbG8rLGv","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 Byte (TTFB) for a specific image resource at a given URL, reporting how long the server takes to begin delivering the image.","exampleAgentPrompt":"Can you check the time to first byte for the hero image at https://example.com/images/hero.jpg and tell me how fast the server starts responding?","exampleUseCases":[{"title":"Diagnosing slow product image loading","prompt":"Our e-commerce site seems slow — can you measure the TTFB for our main product image at https://shop.mystore.com/images/product-main.jpg and tell me how long it takes before bytes start arriving?"},{"title":"Monitoring CDN image delivery performance","prompt":"I want to check if our CDN is delivering images quickly — can you probe the time to first byte for https://cdn.mybrand.com/assets/banner.png and report the result?"},{"title":"Pre-launch image performance audit","prompt":"Before we go live, can you test how fast our server responds when loading the logo image at https://staging.mysite.com/img/logo.png? I need the TTFB measurement to make sure it's under 200ms."}],"resultDescription":"Returns a performance finding (Befund) for the specified image resource, indicating the measured Time to First Byte (TTFB) — the elapsed time from initiating an HTTP request to the image URL until the first byte of the response is received. This helps identify server latency, slow origin response, or CDN delivery issues for image assets.","failureModes":["Invalid or unreachable image URL returns an error indicating the target could not be fetched","Private or non-public IP addresses are rejected as invalid targets","CSS selector matching no image element may fall back to first matching element or return an error","Timeouts if the remote server is unresponsive","Malformed URL input fails schema validation"],"whenToPreferThis":"Use this endpoint when you specifically need to measure the Time to First Byte for an image resource (as opposed to a full page, video, script, or font). It is ideal for diagnosing image-specific server latency, validating CDN performance for image assets, or auditing individual image URLs in a performance pipeline. For page-level TTFB or other resource types (video, font, script), use the corresponding sibling endpoints on tempo.halowerk.com.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:00:16.119Z","isFirstParty":false}