{"uid":"cap_xrfDN8cBWg45PhalpLTxF","slug":"tempo-halowerk-com-stylesheet-modern-image-format-share-check-a836c028","name":"tempo.halowerk.com – Stylesheet Modern Image Format Share Check","description":"Prüft am Objekt stylesheet den Befund Anteil moderner Bildformate.","url":"https://tempo.halowerk.com/v1/pruef/tempo/bildformat/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_ptm9Tv_qF_T5erRnmFlCX","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 what proportion of images referenced in a stylesheet use modern formats (e.g. WebP, AVIF) as a web performance audit finding.","exampleAgentPrompt":"Can you check the stylesheet at https://example.com/styles/main.css and tell me what share of its images use modern formats like WebP or AVIF?","exampleUseCases":[{"title":"Auditing stylesheet image format modernity","prompt":"Check https://shop.example.com/assets/product.css and tell me what percentage of image references in that stylesheet are using modern formats like WebP or AVIF instead of JPEG or PNG."},{"title":"Monitoring image optimization regression","prompt":"I want to track whether the stylesheet at https://myblog.com/theme.css has regressed in modern image format usage — can you check the current share of WebP and AVIF images referenced there?"},{"title":"Validating CSS before deployment","prompt":"Before we deploy, can you audit the stylesheet at https://staging.mysite.com/dist/styles.css using the CSS selector #hero-section and confirm what fraction of its image references are in modern formats?"}],"resultDescription":"Returns a performance finding indicating the share (proportion or percentage) of image references within the target stylesheet that use modern image formats such as WebP or AVIF, along with contextual audit data about the stylesheet object.","failureModes":["Non-public or inaccessible stylesheet URL returns an error or timeout","URL does not point to a valid CSS stylesheet","CSS selector matches zero or multiple elements ambiguously","Stylesheet contains no image references, resulting in a zero or undefined share","Rate limiting or upstream fetch errors for the target resource"],"whenToPreferThis":"Use this endpoint when you specifically want to audit the image format modernity of resources loaded via a CSS stylesheet, rather than analyzing the full page or a specific iframe. It is best suited for targeted stylesheet-level performance audits where you want to isolate image format efficiency within CSS rules, as opposed to broader page-level analysis offered by sibling endpoints.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:07:22.172Z","isFirstParty":false}