{"id":"f48162fd-b8a6-4f6d-8635-5e819a2523e9","shortId":"vBCcUv","kind":"x402","title":"PubMed research trend analysis endpoint (currently not responding).","tagline":"PubMed research trend analysis endpoint (currently not responding).","description":"This endpoint is listed as an x402-payable API at pubmed-trends-x402.ben-miles2.workers.dev under the path /api/v1/hottest. Based on the URL structure, it appears intended to surface trending or \"hottest\" topics, papers, or research areas from PubMed, the biomedical literature database maintained by the National Library of Medicine.\n\nHowever, probing the endpoint returned HTTP 404 on both GET and POST methods, and no x402 payment challenge (HTTP 402) was captured. The root domain and all crawled paths (/docs, /api, /pricing, /README) return a generic Cloudflare Workers placeholder page stating \"There is nothing here yet.\" No OpenAPI schema, documentation, pricing information, or usage examples are available.\n\nGiven the complete absence of a live 402 challenge, any documentation, or any functional response, this endpoint appears to be either not yet deployed, temporarily down, or abandoned. The listing is effectively a stub with no verifiable capabilities or pricing.","tags":[],"capabilities":["pubmed-trends","biomedical-literature","research-analytics","x402-payment"],"categories":["search","science"],"synonyms":["PubMed trending","biomedical trends","research hottest topics","PubMed analytics","medical literature trends","science trend API"],"warnings":["Endpoint returned HTTP 404 on both GET and POST — no x402 payment challenge was captured, indicating the service is not live.","All crawled pages (root, /docs, /api, /pricing, /README) return a generic 'nothing here yet' placeholder.","No documentation, OpenAPI schema, pricing, or usage examples are available anywhere on the domain.","This listing is based entirely on URL inference; no functional behavior has been verified."],"endpointUrl":"https://pubmed-trends-x402.ben-miles2.workers.dev/api/v1/hottest","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x8C05121C9617f8960Cf5b7451103192F32DE8ddE","amount":"50000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.100","qualityRationale":"The endpoint returned 404 on all probe methods with no x402 challenge captured. Every crawled page shows a Cloudflare Workers placeholder. No documentation, schema, pricing, or examples exist. This is effectively an undeployed or abandoned 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'/api/v1/hottest':32 '/docs':93 '/pricing':95 '/readme':96 '402':83,128 '404':70 'PubMed analytics' 'PubMed trending' 'abandon':148 'absenc':124 'analysi':4,12 'api':26 'appear':39,138 'area':50 'avail':120 'base':33 'biomed':54 'biomedical trends' 'biomedical-literature' 'capabl':158 'captur':85 'challeng':81,129 'cloudflar':100 'complet':123 'crawl':91 'current':6,14 'databas':56 'deploy':144 'document':113,131 'domain':88 'effect':152 'either':141 'endpoint':5,13,18,67,137 'exampl':118 'function':134 'generic':99 'get':73 'given':121 'hottest':45 'howev':64 'http':69,82 'inform':115 'intend':40 'librari':61 'list':20,150 'literatur':55 'live':127 'maintain':57 'medical literature trends' 'medicin':63 'method':76 'nation':60 'noth':107 'openapi':111 'page':103 'paper':47 'path':31,92 'payabl':25 'payment':80 'placehold':102 'post':75 'price':114,160 'probe':65 'pubm':1,9,52 'pubmed-trends' 'pubmed-trends-x402.ben-miles2.workers.dev':28 'research':2,10,49 'research hottest topics' 'research-analytics' 'respond':8,16 'respons':135 'return':68,97 'root':87 'schema':112 'science trend API' 'state':104 'structur':37 'stub':154 'surfac':42 'temporarili':145 'topic':46 'trend':3,11,43 'url':36 'usag':117 'verifi':157 'worker':101 'x402':24,79 'x402-payable':23 'x402-payment' 'yet':109,143","prices":[{"id":"2067a9a3-1455-4bdd-820e-df281c5b52bf","listingId":"f48162fd-b8a6-4f6d-8635-5e819a2523e9","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x8C05121C9617f8960Cf5b7451103192F32DE8ddE","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x8C05121C9617f8960Cf5b7451103192F32DE8ddE","amount":"50000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:33.810Z"}],"sources":[{"listingId":"f48162fd-b8a6-4f6d-8635-5e819a2523e9","source":"x402_bazaar","sourceId":"https://pubmed-trends-x402.ben-miles2.workers.dev/api/v1/hottest","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:33.810Z","lastSeenAt":"2026-04-22T10:03:12.512Z"}],"details":{"listingId":"f48162fd-b8a6-4f6d-8635-5e819a2523e9","quickStartSnippet":"# Endpoint is currently returning 404; no working example available.\ncurl https://pubmed-trends-x402.ben-miles2.workers.dev/api/v1/hottest","exampleRequest":null,"exampleResponse":null,"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returned 404 on both POST and GET probe attempts","source_url":"https://pubmed-trends-x402.ben-miles2.workers.dev/api/v1/hottest"},{"claim":"Root domain and all crawled paths return 'There is nothing here yet' placeholder","source_url":"https://pubmed-trends-x402.ben-miles2.workers.dev"}],"useCases":["Retrieving trending biomedical research topics from PubMed","Identifying hot papers or research areas in life sciences","Monitoring shifts in biomedical research focus over time"],"bestFor":["Researchers tracking emerging biomedical topics","AI agents needing programmatic access to PubMed trend data","Science journalists monitoring research momentum"],"notFor":["Production systems requiring reliable uptime (endpoint is currently non-functional)","Full-text paper retrieval or citation graph analysis"],"kindDetails":{},"updatedAt":"2026-04-22T01:09:16.588Z"}}