{"uid":"cap_fMPDEaNhF5ws3AK8I8k6p","slug":"x402-prober-census-bazaar-listing-monitor-crawler-index-cbb00f3c","name":"x402 Prober Census – Bazaar Listing Monitor & Crawler Index","description":"Census of automated x402 monitors and index crawlers observed polling a Bazaar listing on Base mainnet: user-agent prefix, operator URL, stated purpose, class (monitor or crawler), quotes served in the observation week. Updated weekly from live terminal logs.","url":"https://store-production-8add.up.railway.app/v1/probers?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["observedFrom","observedTo","count","probers"],"properties":{"count":{"type":"integer","description":"Number of distinct named probers"},"probers":{"type":"array","items":{"type":"object","properties":{"days":{"type":"integer","description":"Distinct days seen in the window"},"name":{"type":"string"},"class":{"type":"string","description":"monitor (reads the price, never pays) or crawler (index or search)"},"match":{"type":"string","description":"User-agent prefix that identifies the prober"},"quotes":{"type":"integer","description":"402s served to this prober in the window"},"purpose":{"type":["string","null"],"description":"What the user-agent string says about itself"},"operator":{"type":["string","null"],"description":"Operator URL from the user-agent string, if given"}}}},"observedTo":{"type":"string","description":"Last day of the observation window, ISO date"},"observedFrom":{"type":"string","description":"First day of the observation window, ISO date"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.25","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":"$0.25/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_R2AoblHCjRB9ox__hUqQf","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.25","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a weekly-updated census of automated x402 monitors and index crawlers observed polling a Bazaar listing on Base mainnet, including their user-agent, operator, class, and quote counts.","exampleAgentPrompt":"Pull the latest weekly census of x402 probers and crawlers that have been polling my Bazaar listing — I want to see each one's user-agent prefix, operator URL, class (monitor or crawler), and how many 402 quotes they were served.","exampleUseCases":[{"title":"Auditing who monitors your x402 API","prompt":"Which automated monitors and crawlers have been hitting my x402-protected Bazaar listing this week? Show me their names, operator URLs, and how many payment quotes each one got."},{"title":"Identifying new index crawlers on Base","prompt":"Have any new index crawlers started polling my Bazaar listing on Base mainnet recently? I want to see the full list with their user-agent prefixes and stated purposes."},{"title":"Tracking prober activity trends","prompt":"How many distinct x402 probers were active against my Bazaar listing in the last observation window, and which ones showed up on the most days?"}],"resultDescription":"A JSON object containing the observation window start and end dates (ISO format), a count of distinct named probers, and an array of prober records. Each record includes the prober's name, user-agent match prefix, class (monitor or crawler), operator URL (if provided), stated purpose, number of 402 quotes served, and number of distinct days seen during the week.","failureModes":["No probers observed in the window — returns count:0 and empty probers array","Payment not completed — x402 402 response requiring $0.25 USDC before data is returned","Stale data if logs have not yet been processed for the current week","Upstream log pipeline failure causing delayed or missing weekly update"],"whenToPreferThis":"Use this endpoint when you need to audit or understand the automated ecosystem polling an x402-protected Bazaar listing on Base mainnet — specifically when you want structured, named, classified records of monitors vs. crawlers with operator provenance and activity metrics, rather than raw server logs or generic traffic analytics.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T06:33:56.342Z","isFirstParty":false,"canonicalSlug":"x402-prober-census-bazaar-listing-monitor-crawler-index-cbb00f3c"}