{"uid":"cap_nUfRANnd1bHIfPHW_8t8d","slug":"tech-detect-technology-stack-detection-via-x402-e3528dbe","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/klaviyo?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_l9urU9SplHsU9hyCPgk-x","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 used by a given domain, returning identified technologies with confidence scores and evidence, paid per call in USDC over x402.","exampleAgentPrompt":"Can you detect the full technology stack for shopify.com — I want to know every framework, CMS, analytics tool, and marketing platform they're running, along with confidence scores for each?","exampleUseCases":[{"title":"Competitor tech stack reconnaissance","prompt":"What technologies is my competitor acme.com using? I want to know their frontend framework, CMS, analytics tools, and any marketing automation platforms like Klaviyo or HubSpot."},{"title":"Sales prospecting enrichment","prompt":"I'm building a leads list — can you check which of these prospect domains are using Salesforce, HubSpot, or Marketo so I can tailor my outreach? Start with stripe.com."},{"title":"Monitoring stack changes over time","prompt":"Last week you told me that notion.so was using Segment and Intercom. Can you re-scan notion.so now and tell me if anything in their tech stack has changed since then?"}],"resultDescription":"Returns a list of detected technologies for the target domain, each with a name, category (e.g. CMS, analytics, CDN), version (if detectable), confidence score, and supporting evidence. The optional 'previous' input allows delta comparison to highlight newly added or removed technologies.","failureModes":["Domain is unreachable or returns non-200 responses — detection may be incomplete or fail entirely","URL input is malformed or exceeds 2048 characters — validation error returned","No technologies detected if the site uses heavy obfuscation or server-side rendering without fingerprints","Payment failure over x402 prevents the call from completing","Rate limits or infrastructure timeouts on the target domain may degrade results"],"whenToPreferThis":"Choose this endpoint when you need structured, per-technology confidence scores and evidence for a specific domain without signing up for a service or managing API keys. Particularly useful for pay-as-you-go competitive intelligence pipelines, sales enrichment workflows, or monitoring stack drift over time using the 'previous' delta input. Prefer this over browser-extension-style tools when you need programmatic, agent-callable detection integrated into an automated workflow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:20.189Z","isFirstParty":false,"canonicalSlug":"tech-detect-technology-stack-detection-via-x402-35a93e11"}