{"uid":"cap_xs1DlB-e7hBdJu_ey4E7x","slug":"tech-detect-technology-stack-detection-via-x402-5e36761f","name":"Tech Detect — Technology Stack Detection via x402","description":"Domain in, technology stack out. Confidence and evidence for every hit. Pay per call in USDC over x402. No signup, no API key.","url":"https://stack.halowerk.com/stack/articles/self-hosted-fonts?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","maxLength":2048},"previous":{"type":"object","required":["observed_at","technologies"],"properties":{"observed_at":{"type":"string","maxLength":40},"technologies":{"type":"array","items":{"type":"object","required":["name","category","version"],"properties":{"name":{"type":"string","maxLength":150},"version":{"type":["string","null"],"maxLength":80},"category":{"type":"string","maxLength":80}},"additionalProperties":false},"maxItems":150}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KNmaxWkNA1K7pQWC87bBG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Detects the technology stack of a given URL, returning confidence scores and evidence for each identified technology, billed per call in USDC over x402.","exampleAgentPrompt":"Can you scan example.com and tell me what technologies it's running — frameworks, CMS, analytics, CDN, everything you can detect, with confidence scores for each?","exampleUseCases":[{"title":"Competitive tech stack research","prompt":"I want to know exactly what technologies my competitor shopify-rival.com is using — their frontend framework, backend, analytics, payment processors, anything you can detect. Give me confidence levels for each finding."},{"title":"Pre-acquisition due diligence","prompt":"We're looking at acquiring startupxyz.com and I need a full picture of their technology stack — what CMS, hosting, frameworks, and third-party tools they're running, so we can estimate technical debt."},{"title":"Monitoring stack changes over time","prompt":"I scanned techblog.io last week and found they were using Next.js and Cloudflare. Can you scan it again now and flag anything that's changed or any new technologies added since then?"}],"resultDescription":"Returns a list of detected technologies for the submitted URL, each with a name, category (e.g. CMS, CDN, analytics, JavaScript framework), version where detectable, a confidence score, and supporting evidence for the detection. Optionally compares against a previously observed technology list to highlight changes.","failureModes":["URL is unreachable or returns non-200 status — detection cannot proceed","Domain does not serve HTTP/HTTPS content — returns empty or error","Very new or obscure technologies may not be in the detection database — low confidence or missing","Rate limiting or bot protection on target domain may limit evidence gathered","Invalid URL format in input — request rejected with validation error","Payment failure over x402 — call not executed"],"whenToPreferThis":"Choose this endpoint when you need per-call, no-signup technology stack detection billed in USDC via x402 — ideal for agents that scan domains on demand without committing to a subscription. Especially useful when you want confidence scores and structured evidence per technology, or when you need to diff against a previously observed stack to detect changes.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:29.521Z","isFirstParty":false,"canonicalSlug":"tech-detect-technology-stack-detection-via-x402-35a93e11"}