{"uid":"cap_o8zfzBoLs7d-HhtkA3IoI","slug":"tech-detect-technology-stack-detection-via-x402-b8e4e4fc","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/calcom?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_QZsgGjycPAHnGWqvUvzPs","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 domain or URL, returning confidence scores and evidence for each identified technology, paid per call in USDC over x402.","exampleAgentPrompt":"Can you scan cal.com and tell me what technologies it's using — I want to know the frameworks, analytics tools, CDN, and any other stack details you can detect, with confidence scores for each?","exampleUseCases":[{"title":"Competitive tech stack research","prompt":"What technology stack is Notion.so running on? I want to know their frontend framework, backend signals, CDN, and any third-party tools you can detect."},{"title":"Monitoring a site for stack changes","prompt":"Check the tech stack on shopify.com and compare it against what we observed last month — I want to know if anything has changed, like a new analytics tool or a different CDN."},{"title":"Sales lead enrichment","prompt":"I'm prospecting a SaaS company at linear.app — can you detect their technology stack so I know what tools and platforms they're using before I reach out?"}],"resultDescription":"Returns a structured list of detected technologies for the given URL, each with a name, category (e.g. JavaScript framework, CDN, analytics), version if detectable, a confidence score, and supporting evidence for the detection. May also surface infrastructure signals like hosting provider and server software.","failureModes":["URL is unreachable or returns non-200 status — detection may fail or return empty results","Private/intranet URLs cannot be crawled — no technologies returned","Heavily obfuscated or minified sites may yield low-confidence or incomplete results","Rate limiting or bot-blocking on the target domain may prevent fingerprinting","Malformed URL input causes validation error","Previous snapshot schema mismatch causes request rejection"],"whenToPreferThis":"Choose this endpoint when you need technology fingerprinting for any public-facing domain without needing an account or API key — the x402 pay-per-call model makes it ideal for low-volume, ad-hoc, or automated agent workflows. Prefer it over scraper-based DIY solutions when you need structured, confidence-scored output. The optional 'previous' parameter makes it particularly well-suited for change-detection workflows comparing snapshots over time.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:45:34.449Z","isFirstParty":false,"canonicalSlug":"tech-detect-technology-stack-detection-via-x402-35a93e11"}