{"id":"04bd6222-b6f0-4f34-8d4c-577d5c5755bf","shortId":"u22MEH","kind":"x402","title":"Pay-per-call HR reviews endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call HR reviews endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at `/api/v1/hr/reviews/41` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-call APIs accessible via the x402 payment protocol. The specific resource appears to serve HR review data (likely a single review record identified by ID 41), returning JSON. Payment is settled on the Base network using USDC (contract `0x8335…2913`) with a maximum cost of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises endpoints across data & analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all at the same $0.02/request price point. The platform emphasizes no API keys, no rate limits, no minimums, and instant access. All endpoints use the x402 exact-payment scheme on the Base L2 network.\n\nThere is no OpenAPI schema, no detailed documentation, and no example request/response payloads available from the crawled pages. The endpoint is confirmed live (returns HTTP 402 with a valid x402 challenge). The specific data returned by the HR reviews endpoint is unknown — the description simply says \"Premium API Access\" with no further detail on the schema or fields of the review object.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-call","hr-data","json-response"],"categories":["data"],"synonyms":["HR review API","employee review data","human resources API","x402 paid endpoint","lowpaymentfee","pay-per-request API","Base USDC API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","No example request or response payloads — the actual data returned is unknown","The HR reviews endpoint path suggests a single record (ID 41); unclear if other IDs are available or what the data contains","No robots.txt or agents.txt found","Ancillary pages (/api, /pricing, /README) returned only a 'Connect wallet' prompt with no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/reviews/41","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/hr/reviews/41","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no documentation of request/response formats, and the specific data served by the HR reviews endpoint is entirely undocumented. The listing is effectively a stub with only pricing and protocol details 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'/request':17,34,149 '0.02':16,33,105,148 '000':100 '0x8335':92 '20':99 '2913':93 '402':205 '41':79 '6':110 'Base USDC API' 'HR review API' 'access':56,165,228 'across':118 'advertis':116 'ai/ml':121 'analysi':123 'analyt':120 'api':55,156,227 'appear':65 'avail':193 'base':9,26,87,101,177 'base-network' 'broad':48 'broader':113 'call':4,21,54 'catalog':49 'challeng':210 'classif':125 'confirm':201 'contract':91 'convers':142 'cost':97 'crawl':196 'data':70,119,213 'decim':111 'descript':223 'detail':186,232 'document':187 'embed':126 'emphas':154 'employee review data' 'endpoint':7,24,36,117,167,199,219 'equal':104 'estim':136 'exact':172 'exact-pay':171 'exampl':190 'exchang':131 'feed':130 'field':237 'financ':127 'gas':135 'generat':143 'geocod':140 'hr':5,22,68,217 'hr-data' 'http':204 'human resources API' 'id':78 'identifi':76 'infrastructur':138 'instant':164 'json':81 'json-response' 'key':157 'l2':178 'like':71 'limit':160 'live':202 'lowpaymentfee' 'lowpaymentfee.com':43,114 'maximum':96 'minimum':162 'network':88,179 'object':241 'offer':46 'openapi':183 'page':197 'part':40 'pay':2,19,52 'pay-per-cal':1,18,51 'pay-per-call' 'pay-per-request API' 'payload':192 'payment':60,82,173 'per':3,20,53,106 'platform':44,115,153 'point':151 'premium':226 'price':129,150 'protocol':61 'quot':134 'rate':132,159 'record':75 'request':107 'request/response':191 'resourc':64 'return':80,203,214 'review':6,23,69,74,218,240 'say':225 'schema':184,235 'scheme':174 'sentiment':122 'serv':67 'settl':12,29,84 'simpli':224 'singl':73 'specif':63,212 'summar':124 'token':133 'unit':102 'unknown':221 'usdc':14,31,90,108 'usdc-settlement' 'use':89,109,168 'util':139 'valid':141,208 'via':10,27,57 'web3':128 'x402':11,28,59,170,209 'x402 paid endpoint' 'x402-payment'","prices":[{"id":"bc49f56f-bd89-43ca-b550-a33900886e75","listingId":"04bd6222-b6f0-4f34-8d4c-577d5c5755bf","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/hr/reviews/41","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.924Z"}],"sources":[{"listingId":"04bd6222-b6f0-4f34-8d4c-577d5c5755bf","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/reviews/41","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.924Z","lastSeenAt":"2026-04-23T16:08:14.731Z"}],"details":{"listingId":"04bd6222-b6f0-4f34-8d4c-577d5c5755bf","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/41 \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/41"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/41"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and no minimums","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers endpoints across data & analytics, AI/ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving HR review data programmatically with per-call payment","Integrating employee review records into automated workflows","Agent-driven access to HR data without API key provisioning"],"bestFor":["Agents needing on-demand HR review data without subscription commitments","Developers testing x402 payment flows on Base","Low-volume, pay-as-you-go data retrieval"],"notFor":["Bulk HR data exports (no documented batch endpoint)","Users who need detailed API documentation or response schema guarantees","Production systems requiring SLA or uptime guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:09.872Z"},"updatedAt":"2026-04-23T16:08:14.731Z"}}