{"uid":"cap_b8bFJGJrCBEllqkfF07Pv","slug":"weblens-tech-detection-api-86028d6e","name":"WebLens Tech Detection API","description":"# WebLens - Web Intelligence API, pay per call\n\nScrape, crawl, map and extract the web. No account, no API key, no monthly\nminimum — you pay for the calls you make and nothing else.\n\n## Pricing\nPage fetching starts at **$0.002**, whole-site crawling at\n**$0.0015/page**, and sitemap discovery at **$0.004**.\nComparable services bill $0.007-0.008 per request, or reach a lower per-page\nrate only on a $99/month commitment. WebLens has no commitment to reach.\n\n## Payment Protocol\nAll paid endpoints use the [x402 protocol](https://x402.org) for HTTP-native\nmicropayments (USDC on Base).\n\n## Cache Discount\nCached responses are **70% cheaper** than fresh fetches.","url":"https://api.weblens.dev/tech?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","description":"Site URL to fingerprint"}}},"responseSchema":{"type":"json","example":{"url":"https://vercel.com","server":"Vercel","status":200,"finalUrl":"https://vercel.com/","poweredBy":"Next.js, Payload","requestId":"req_tech123","categories":{"hosting":["Vercel"],"framework":["Next.js"]},"detectedAt":"2026-08-02T12:00:00.000Z","technologies":[{"name":"Next.js","category":"framework","evidence":"header x-powered-by: Next.js, Payload"},{"name":"Vercel","category":"hosting","evidence":"header x-vercel-id: ..."}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_j6pTtn6nWMKCgMSWfTXMC","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Detects technologies, frameworks, hosting providers, and other tech stack components used by a given URL","exampleAgentPrompt":"Can you detect what technologies and frameworks are powering vercel.com — I want to know the hosting provider, frontend framework, and any other stack components you can identify?","exampleUseCases":[{"title":"Competitor tech stack analysis","prompt":"What tech stack is my competitor at shopify.com running? I want to know their hosting, frontend framework, CMS, and any analytics tools they're using."},{"title":"Developer due diligence on acquisition target","prompt":"We're evaluating acquiring a startup at acme-startup.io — can you tell me what technologies their website is built on, including server, framework, and infrastructure clues?"},{"title":"Sales lead enrichment by tech usage","prompt":"I'm targeting companies that use Salesforce on their website — can you check whether techcorp.com has Salesforce detected in their tech stack?"}],"resultDescription":"Returns a JSON object containing the detected technologies (each with name, category, and header/DOM evidence), a categorized map of technologies by type (e.g. hosting, framework), server and powered-by header values, final redirected URL, HTTP status code, and a request ID for tracing.","failureModes":["URL is unreachable or returns a non-2xx status — endpoint still returns status code but technology detection may be incomplete","Site uses heavy client-side rendering that prevents server-side technology fingerprinting","Redirect loops or very long redirect chains may affect finalUrl resolution","Payment failure via x402 protocol if insufficient USDC balance","Invalid or malformed URL input returns an error response"],"whenToPreferThis":"Choose this endpoint when you need to fingerprint the technology stack of a specific URL without setting up an account or committing to a monthly plan. It is ideal for per-call, pay-as-you-go tech detection where cost efficiency matters — at $0.005 per call (with 70% discount on cached results), it undercuts comparable services. Prefer it for competitive research, lead enrichment, or developer due diligence workflows where you need structured, categorized technology evidence including header-based fingerprints.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:01:54.576Z","isFirstParty":false,"canonicalSlug":"weblens-tech-detection-api-86028d6e"}