{"uid":"cap_x-tUTnDSUAN0A1inxNZkw","slug":"tech-detect-pay-per-call-technology-detection-over-x402-d0601047","name":"Tech Detect — pay-per-call technology detection over 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/fathom?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_G-WlLsmeIHoJIBA4zTD_O","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":"Analyzes a domain URL and returns the full technology stack with confidence scores and evidence, billed per call in USDC via x402.","exampleAgentPrompt":"Can you scan shopify.com and tell me what technologies its website is using — things like frontend frameworks, CDNs, analytics tools, and server software — with confidence scores for each hit?","exampleUseCases":[{"title":"Competitor tech stack research","prompt":"I want to know what technology stack my competitor stripe.com is running — frameworks, CDN, payment tools, analytics, anything you can detect. Give me the full breakdown with confidence scores."},{"title":"CMS and e-commerce platform identification","prompt":"Can you check what CMS or e-commerce platform shopify.com is built on? I need to know the version if possible and how confident you are."},{"title":"Monitoring stack changes over time","prompt":"Last week I scanned github.com and found it was using React 18.2, Fastly CDN, and Ruby on Rails. Can you scan it again now and tell me if anything in the technology stack has changed?"}],"resultDescription":"Returns a list of detected technologies for the given domain, each with a name, category (e.g. CDN, JavaScript framework, CMS, analytics), version if detectable, a confidence score, and supporting evidence for the detection.","failureModes":["Invalid or unreachable URL returns an error or empty technology list","Domain behind bot protection may yield incomplete or inaccurate results","Payment failure via x402 prevents the call from completing","Very new or obscure domains may return low-confidence or sparse results","Malformed input schema (missing url field) returns a validation error"],"whenToPreferThis":"Choose this endpoint when you need structured, evidence-backed technology fingerprinting of a specific domain without managing API keys or subscriptions — especially useful for one-off lookups, competitive intelligence, or agent workflows that pay per use via x402 USDC micropayments. The optional 'previous' parameter makes it well-suited for change-detection workflows where you want to diff against a prior scan.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:30.241Z","isFirstParty":false,"canonicalSlug":"tech-detect-pay-per-call-technology-detection-over-x402-d0601047"}