{"uid":"cap_LQhfhZqY-qWabOGY319w1","slug":"tech-detect-recaptcha-technology-detection-68035715","name":"Tech Detect – reCAPTCHA Technology Detection","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/recaptcha?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_PXdwGuaL6VlUPiifVHCDw","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 whether a given domain uses reCAPTCHA and returns confidence scores and evidence, paid per call in USDC via x402.","exampleAgentPrompt":"Can you check whether stripe.com is using reCAPTCHA — I want to know the confidence level and any evidence you find, and also pass in what we saw last week: reCAPTCHA v3 under the security category with no version pinned.","exampleUseCases":[{"title":"Competitive bot-protection audit","prompt":"I'm building a competitor analysis report — can you scan acme-shop.com to see if they're running reCAPTCHA, and tell me how confident you are and what evidence backs it up?"},{"title":"Change detection for security stack monitoring","prompt":"We tracked github.com last month and saw reCAPTCHA v2 in the security category. Can you re-scan it now with that previous observation and tell me if anything has changed?"},{"title":"Lead enrichment for sales targeting","prompt":"We're selling CAPTCHA alternatives and need to know which prospects already use reCAPTCHA. Can you detect whether prospectsite.io is running reCAPTCHA right now?"}],"resultDescription":"Returns detected technology entries for reCAPTCHA on the target domain, each with a name, category, version, confidence score, and supporting evidence. If the domain does not appear to use reCAPTCHA, an empty or low-confidence result is returned.","failureModes":["Invalid or unreachable URL returns an error or empty result","Payment failure via x402 prevents the call from completing","Domain blocks scanning bots, leading to low-confidence or missed detections","Stale or incorrect 'previous' observation data may skew change-detection logic","Rate limiting or infrastructure downtime on halowerk.com returns a 5xx error"],"whenToPreferThis":"Choose this endpoint when you need pay-as-you-go, no-signup technology detection specifically scoped to reCAPTCHA on a target domain, especially when you want confidence scores and evidence rather than a simple boolean. It is ideal for agents doing one-off or low-volume checks without committing to a subscription, or when integrating micropayments via x402 is already part of the workflow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:32.558Z","isFirstParty":false,"canonicalSlug":"tech-detect-recaptcha-technology-detection-68035715"}