{"id":"ef5f0f47-60c4-4624-aea7-11a677c5b32d","shortId":"NNWaaP","kind":"x402","title":"x402-gated employee salary endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated employee salary endpoint on Base, pay-per-request with USDC.","description":"This endpoint at lowpaymentfee.com provides access to employee salary data (specifically employee ID 73) via an x402 payment challenge. It is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance, and utility services — all gated behind x402 micropayments on the Base network using USDC.\n\nThe specific endpoint `/api/v1/employees/73/salary` accepts POST requests and returns JSON. The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the platform's uniform $0.02/request pricing. Payment is settled on-chain via the \"exact\" scheme with a 300-second timeout. No API keys or rate limits are required — callers simply attach the X-PAYMENT header.\n\nDocumentation on the site is extremely thin. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI schema, no request/response examples, and no description of what fields the salary response contains. The endpoint's purpose and response format must be inferred entirely from the URL path and the x402 challenge metadata.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","employee-salary-data","pay-per-request","no-api-key","json-response"],"categories":["data","finance"],"synonyms":["employee salary API","payroll data endpoint","x402 micropayment API","USDC pay-per-call","lowpaymentfee","Base network API","salary lookup"],"warnings":["No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or JSON schema describing request body or response format","The endpoint is scoped to a single employee ID (73); unclear if other IDs are supported or if this is a demo","Purpose and data source of 'employee salary' data is unverified — could be synthetic/demo data"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/73/salary","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/employees/73/salary","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request parameters or response schema. No OpenAPI spec, no examples, and the docs pages are empty. The endpoint path suggests employee salary data but nothing confirms what fields are returned.","verified":false,"liveness":"unknown","lastLivenessCheck":null,"agentReviews":{"count":0,"score_avg":null,"cost_usd_avg":null,"success_rate":null,"latency_p50_ms":null,"narrative_summary":null,"summary_updated_at":null},"enrichmentModel":"anthropic/claude-opus-4.6","enrichmentVersion":2,"enrichedAt":"2026-04-21T20:46:49.954Z","embedding":[-0.018707275,-0.0043907166,0.042907715,0.010017395,0.0068740845,-0.02243042,0.0024585724,0.012954712,0.05001831,-0.06390381,0.03289795,-0.05895996,-0.040100098,-0.03112793,-0.007648468,0.015411377,0.0035743713,-0.01914978,-0.06188965,0.03164673,0.053222656,-0.002620697,-0.013938904,0.058563232,0.0020542145,0.016220093,-0.019439697,-0.010025024,-0.036895752,-0.04800415,0.017745972,-0.01676941,-0.052459717,0.0005288124,-0.0030899048,0.02394104,0.00070858,0.045410156,0.03302002,-0.0149383545,-0.00944519,-0.047302246,0.008026123,-0.013320923,-0.047607422,-0.031951904,-0.018127441,-0.0038337708,0.02949524,-0.023376465,-0.027404785,0.011581421,-0.008270264,0.031143188,0.0013923645,0.01725769,0.009353638,-0.012306213,0.0054855347,-0.0005707741,0.017166138,-0.076171875,-0.018325806,0.008171082,0.010437012,0.045898438,-0.021469116,0.059143066,0.008926392,0.095214844,0.05130005,0.058502197,0.045288086,0.028518677,0.008110046,-0.039123535,0.021026611,0.013900757,-0.026565552,-0.010002136,0.0041160583,-0.026000977,-0.037719727,-0.050231934,-0.013633728,-0.055511475,0.0024719238,0.00945282,-0.038116455,0.0085372925,-0.09075928,-0.008338928,0.0017089844,0.01927185,0.011550903,-0.030319214,-0.021743774,0.012535095,0.01159668,0.0048675537,0.008514404,-0.057434082,0.042633057,-0.0082092285,0.052886963,0.047729492,-0.0109939575,0.007686615,-0.0027484894,-0.017974854,-0.019226074,0.022445679,-0.003835678,-0.01121521,0.017089844,-0.010017395,-0.049346924,0.024276733,0.0054397583,0.0146484375,-0.03451538,0.054382324,0.016326904,-0.019058228,-0.0060920715,-0.027954102,-0.027862549,0.017486572,-0.04824829,-0.019805908,0.028823853,-0.020523071,-0.0015773773,-0.025482178,-0.020523071,0.016983032,-0.026489258,-0.024734497,-0.03982544,-0.007522583,0.027526855,-0.005214691,0.016052246,0.015159607,-0.08081055,0.005142212,-0.013557434,0.012336731,-0.03466797,0.0006723404,0.0023612976,0.0060920715,-0.004009247,-0.024993896,-0.009864807,-0.015609741,-0.0031547546,0.021240234,0.0004892349,0.028839111,0.0031261444,-0.00007867813,0.009414673,0.0035266876,0.013381958,0.03353882,-0.004383087,-0.07196045,-0.08465576,-0.024795532,-0.017944336,-0.037139893,0.0066986084,0.010406494,-0.0021343231,-0.050689697,-0.000082314014,-0.027572632,-0.026794434,-0.030517578,0.0011806488,-0.058898926,-0.0074501038,0.012908936,-0.041107178,-0.04272461,-0.026306152,0.047424316,0.007671356,0.024963379,0.040405273,-0.013381958,0.058746338,-0.0006904602,-0.016845703,-0.017547607,0.02470398,-0.04534912,0.016189575,-0.01109314,0.039031982,-0.0070228577,0.039611816,0.053222656,-0.012290955,-0.02079773,-0.010612488,-0.036743164,-0.05444336,-0.019638062,0.02532959,-0.00013935566,-0.0032672882,0.0141067505,0.00086021423,-0.017959595,-0.016296387,-0.007637024,0.020599365,0.0149383545,0.014877319,0.021453857,0.020706177,0.024963379,-0.0262146,0.02520752,0.04333496,0.007358551,0.008010864,-0.03363037,0.016098022,0.014129639,-0.022277832,-0.012908936,-0.020751953,0.03756714,-0.01651001,0.0050964355,-0.006969452,0.0033340454,-0.04055786,-0.03842163,0.019546509,0.006259918,0.026901245,-0.030838013,-0.040008545,-0.04711914,0.054229736,0.03314209,0.028060913,-0.02607727,0.010902405,-0.011306763,-0.05303955,-0.045013428,0.030670166,0.072753906,0.02041626,-0.021331787,0.035339355,-0.018127441,-0.024734497,0.016815186,-0.014373779,-0.013183594,-0.01789856,0.0026683807,-0.025878906,0.002483368,0.019760132,0.026748657,0.051696777,-0.0067596436,-0.05783081,0.004360199,0.010429382,0.013824463,-0.040527344,-0.004425049,-0.025909424,0.024734497,0.018341064,-0.0027656555,0.021469116,0.00069093704,-0.012954712,-0.006931305,0.019897461,0.002538681,-0.013206482,0.04458618,0.004753113,-0.031585693,0.025299072,-0.0054740906,0.051239014,-0.016296387,0.015159607,-0.030517578,0.0038547516,0.07373047,-0.014144897,-0.048736572,-0.013435364,0.0014877319,0.026382446,0.04421997,0.0051841736,0.007637024,-0.020309448,0.05935669,-0.013786316,0.0063056946,0.02960205,0.022018433,0.035491943,-0.001461029,-0.032073975,-0.034606934,-0.0010299683,0.007858276,0.0143966675,-0.008544922,0.009437561,-0.015777588,0.014183044,-0.046936035,-0.0362854,-0.042907715,-0.007827759,0.0004618168,-0.01574707,-0.002954483,-0.017822266,0.021530151,0.016220093,0.018493652,0.026031494,0.039520264,0.012756348,-0.0057029724,-0.03274536,-0.028411865,-0.023849487,-0.022399902,0.0072250366,-0.0053977966,0.039154053,0.039794922,-0.06021118,-0.0062217712,-0.00687027,-0.013786316,0.008682251,-0.025848389,-0.019470215,-0.07244873,-0.047210693,-0.013496399,-0.03604126,0.04638672,0.047454834,-0.01600647,0.0635376,0.01789856,0.0038642883,-0.01663208,0.041656494,-0.04776001,-0.03894043,-0.0120010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'/request':131 '0.02':121,130 '000':104 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':110 '20':103 '300':145 '6':116 '73':42 'Base network API' 'USDC pay-per-call' 'accept':90 'access':34 'addit':187 'advertis':99 'ai/ml':69 'analyt':68 'api':65,149,173 'asset':109 'attach':158 'base':8,22,82,105,112 'base-network' 'behind':77 'broader':53 'caller':156 'chain':138 'challeng':47,98,225 'connect':182 'consist':124 'contain':206 'content':188 'data':38,67 'decim':117 'descript':199 'doc':172 'document':164 'employe':4,18,36,40 'employee salary API' 'employee-salary-data' 'endpoint':6,20,30,88,208 'entir':217 'exact':141 'exampl':196 'extrem':169 'field':202 'financ':71 'format':213 'gate':3,17,76 'header':163 'id':41 'infer':70,216 'json':95 'json-response' 'key':150 'limit':153 'lowpaymentfee' 'lowpaymentfee.com':32,55 'maxamountrequir':101 'metadata':226 'micropay':79 'must':214 'network':83 'no-api-key' 'offer':57 'on-chain':136 'openapi':192 'page':177 'part':50 'path':221 'pay':10,24,62 'pay-per-request':9,23,61 'payment':46,133,162 'payroll data endpoint' 'per':11,25,63,122 'platform':54,127 'post':91 'price':132,174 'prompt':184 'provid':33 'purpos':210 'rate':152 'readm':176 'render':179 'request':12,26,64,92,123 'request/response':195 'requir':155 'respons':205,212 'return':94 'salari':5,19,37,204 'salary lookup' 'schema':193 'scheme':142 'second':146 'servic':74 'settl':135 'simpli':157 'sinc':113 'site':167 'span':66 'specif':39,87 'thin':170 'timeout':147 'translat':119 'uniform':129 'unit':106 'url':220 'usdc':14,28,85,108,114 'usdc-micropayment' 'use':84,115 'util':73 'varieti':59 'via':43,139 'wallet':183 'x':161 'x-payment':160 'x402':2,16,45,78,97,224 'x402 micropayment API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"48f574d5-43d8-4e0b-9b15-18516abc26ed","listingId":"ef5f0f47-60c4-4624-aea7-11a677c5b32d","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/employees/73/salary","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:17.548Z"}],"sources":[{"listingId":"ef5f0f47-60c4-4624-aea7-11a677c5b32d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/73/salary","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:17.548Z","lastSeenAt":"2026-04-23T04:02:25.042Z"}],"details":{"listingId":"ef5f0f47-60c4-4624-aea7-11a677c5b32d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/73/salary \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base with a 300-second timeout","source_url":"https://lowpaymentfee.com/api/v1/employees/73/salary"},{"claim":"Platform-wide pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/73/salary"},{"claim":"Docs, API, pricing, and README pages render only a 'Connect wallet' prompt with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving salary information for a specific employee record","Demonstrating x402 micropayment integration on Base","Building payroll or HR dashboards with per-request billing"],"bestFor":["Developers experimenting with x402 payment protocols","Applications needing on-demand salary data without subscription commitments","Agents that can autonomously pay for API calls using USDC on Base"],"notFor":["Bulk payroll data retrieval (single-employee endpoint, $0.02 per call adds up)","Users who need comprehensive API documentation or OpenAPI specs before integrating","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:13.495Z"},"updatedAt":"2026-04-23T04:02:25.042Z"}}