{"uid":"cap_Nsf7C86wA1e-ngHyi89cP","slug":"tech-detect-technology-stack-detection-via-x402-baa4ba9b","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/fontsdotcom?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_RD4g2x6sUOi23etAJ58RZ","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, returning confidence scores and evidence for each identified technology, paid per call in USDC via x402.","exampleAgentPrompt":"What's the full technology stack behind fonts.com — frameworks, CMS, CDN, analytics tools, all of it — with confidence scores for each hit?","exampleUseCases":[{"title":"Competitive tech stack research","prompt":"I want to know exactly what technologies my competitor at shopify.com is using — their frontend framework, payment processors, analytics, and CDN. Can you scan it and give me the full list with confidence scores?"},{"title":"Sales lead technology qualification","prompt":"Before I reach out to acme.corp, can you check what marketing and CRM technologies they're running on their website? I need to know if they're already using Salesforce or HubSpot."},{"title":"Monitoring a site for stack changes","prompt":"Scan stripe.com for its current tech stack and compare against this previous snapshot I have from last month — I want to see if they've switched any major technologies since then."}],"resultDescription":"Returns a structured list of detected technologies, each with a name, category (e.g. CMS, CDN, analytics), version (if detectable), a confidence score indicating detection certainty, and supporting evidence for the identification.","failureModes":["Invalid or unreachable URL returns an error with no stack data","Private or firewalled domains may yield partial or empty results","Low-confidence detections may be included with caveats","Payment failure via x402 results in 402 response and no scan performed","Malformed URL input rejected with validation error"],"whenToPreferThis":"Choose this endpoint when you need pay-per-use technology fingerprinting without account registration or API keys — ideal for ad-hoc agent workflows, one-off competitive scans, or pipelines that need to avoid monthly subscription overhead. The x402 micropayment model makes it cost-efficient at scale for batch domain lookups billed only per successful call. The optional 'previous' parameter makes it especially useful for change-detection workflows where you want to diff against a prior snapshot.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:21.680Z","isFirstParty":false,"canonicalSlug":"tech-detect-technology-stack-detection-via-x402-35a93e11"}