{"id":"878a93c0-7d88-482e-a7fd-96c2c9a44587","shortId":"Uj8UVa","kind":"x402","title":"Pay-per-call lab results endpoint on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call lab results endpoint on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at `/api/v1/lab/results/84` is part of the lowpaymentfee.com platform, which offers a suite of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. All endpoints are gated via the x402 protocol, settling payments in USDC on the Base network. The specific resource at path `/lab/results/84` is labeled \"Premium API Access\" and costs $0.02 per request (20,000 base units of USDC with 6 decimals). No API keys or rate limits are advertised; access is granted immediately upon payment.\n\nThe broader platform lists endpoints for metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02 price point. However, the specific `/api/v1/lab/results/84` endpoint does not clearly map to any of those advertised categories. Its exact response payload and purpose are undocumented beyond the generic \"Premium API Access\" label. The endpoint accepts POST requests and returns `application/json`.\n\nThe x402 challenge was successfully captured (HTTP 402), confirming the endpoint is live. Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base, with a maximum timeout of 300 seconds. No OpenAPI spec, detailed documentation, or example responses are available.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-call","json-response","no-api-key","post-method"],"categories":["data","api-marketplace"],"synonyms":["lab results API","premium API access","lowpaymentfee","x402 paid endpoint","USDC micropayment API","Base network API","pay-per-request API"],"warnings":["The specific endpoint /api/v1/lab/results/84 is not listed among the advertised APIs on the provider's homepage; its purpose and response schema are unknown.","No OpenAPI spec, example responses, or detailed documentation available.","The /api, /pricing, and /README pages returned only a 'Connect wallet' prompt with no useful content.","Response payload structure is completely undocumented — callers cannot know what they will receive before paying."],"endpointUrl":"https://lowpaymentfee.com/api/v1/lab/results/84","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/lab/results/84","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI spec, no example request/response, and the purpose of '/api/v1/lab/results/84' is entirely opaque — it doesn't match any of the advertised API categories on the landing page. Effectively a stub listing.","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":"2026-04-21T22:32:40.458Z","embedding":[-0.009109497,-0.03488159,0.05532837,0.013183594,0.0104904175,-0.025131226,-0.023208618,0.022506714,0.06384277,-0.087646484,0.03439331,-0.046173096,-0.017547607,-0.059661865,-0.028839111,0.010658264,-0.006134033,0.011917114,-0.061523438,0.020553589,0.025054932,-0.044525146,-0.0047416687,0.01826477,-0.017044067,-0.044403076,-0.0025844574,-0.015174866,-0.012191772,-0.049621582,0.035095215,-0.025375366,-0.019729614,0.00434494,-0.045074463,0.017669678,0.0007648468,0.028686523,0.010406494,-0.031707764,-0.014709473,-0.06021118,-0.00036096573,0.0077285767,-0.054840088,0.0038795471,0.002626419,-0.035583496,0.020568848,-0.009422302,-0.030731201,-0.00028038025,-0.0052261353,-0.018478394,-0.0006303787,0.009971619,0.0040512085,0.0071525574,0.018966675,0.0071258545,0.0049362183,-0.05355835,0.0011091232,-0.016403198,-0.0027828217,0.04840088,-0.01675415,0.040527344,0.030059814,0.046081543,0.051635742,0.07196045,0.0010461807,0.009017944,-0.027297974,-0.017578125,0.012001038,0.054138184,-0.020690918,-0.030731201,-0.017211914,-0.02961731,-0.0019683838,0.017105103,-0.0047454834,-0.04171753,-0.018600464,0.008972168,-0.0048332214,0.027679443,-0.07110596,-0.02722168,-0.0007443428,0.015144348,0.02128601,0.007698059,-0.009346008,0.02267456,-0.022598267,0.006088257,0.0149002075,-0.037261963,0.015960693,0.005191803,0.018661499,0.057800293,0.000998497,0.03189087,-0.0054855347,-0.012886047,-0.012382507,0.024856567,-0.030838013,-0.004611969,0.01411438,0.0003194809,-0.02609253,0.018630981,-0.036071777,0.015472412,-0.049957275,0.060791016,-0.004421234,-0.011962891,0.015274048,-0.03253174,0.0058174133,-0.02444458,-0.0028057098,-0.008354187,0.018310547,-0.0022678375,0.020462036,-0.004600525,-0.041748047,0.027297974,-0.028762817,-0.030761719,-0.05480957,-0.03152466,0.04046631,-0.022094727,0.04336548,0.028076172,-0.07287598,-0.010375977,-0.036224365,0.027557373,-0.018112183,0.013214111,0.014846802,0.03186035,-0.035064697,0.004776001,-0.019180298,-0.02470398,0.01235199,0.037902832,-0.030426025,0.030685425,0.009117126,0.041625977,0.019973755,-0.00055646896,0.031707764,0.039611816,-0.0029621124,-0.06173706,-0.093566895,-0.0154953,-0.007019043,-0.012550354,-0.025817871,0.0071144104,-0.023269653,-0.04748535,-0.014297485,-0.0041275024,0.005794525,-0.045776367,-0.016708374,-0.045898438,0.010269165,0.0044059753,-0.076049805,-0.026885986,-0.016433716,0.049346924,0.040130615,0.011291504,0.03564453,-0.02229309,0.060028076,0.03112793,-0.041381836,-0.02670288,0.037200928,-0.015144348,0.01361084,0.0040664673,-0.009735107,-0.02670288,0.045196533,0.05279541,0.0138549805,-0.028259277,-0.017868042,-0.05996704,-0.02583313,-0.040527344,0.03149414,0.01991272,-0.00095129013,0.040924072,-0.021255493,-0.01701355,-0.007835388,0.009307861,0.029006958,0.047180176,0.0049324036,-0.0019798279,0.04421997,-0.0055656433,-0.051818848,0.044769287,0.033203125,0.0076904297,-0.016723633,-0.032836914,0.025466919,0.019042969,-0.016448975,0.012802124,0.0001707077,0.030471802,0.00026011467,0.025253296,0.016937256,-0.027191162,-0.02444458,-0.024353027,-0.012931824,0.027267456,-0.0038089752,-0.023895264,-0.030273438,-0.09906006,0.05105591,0.053863525,0.0018453598,-0.011184692,0.028930664,-0.05355835,-0.0087890625,-0.041931152,0.042053223,0.042938232,-0.014045715,-0.037994385,0.013954163,-0.0209198,-0.041107178,-0.019165039,-0.023330688,-0.029205322,-0.007484436,0.021316528,-0.062194824,-0.0118255615,0.0234375,0.020477295,0.04345703,-0.025131226,-0.030029297,-0.019866943,-0.013412476,0.033935547,-0.035980225,-0.005924225,-0.027236938,0.053710938,0.008255005,-0.013748169,0.018859863,-0.004371643,-0.011154175,-0.03201294,0.013870239,-0.008712769,-0.024429321,0.018249512,0.014450073,-0.053466797,-0.00274086,-0.00630188,0.07788086,-0.04788208,0.03463745,-0.0143966675,-0.02192688,0.042266846,0.0009241104,-0.059448242,0.006046295,0.045959473,0.025375366,0.041137695,0.002620697,-0.024353027,-0.027420044,0.06500244,-0.008033752,-0.022125244,0.0028896332,0.0015258789,0.026626587,-0.013580322,-0.06774902,-0.03555298,-0.0038375854,-0.034362793,0.029647827,-0.017349243,0.01222229,0.0046539307,0.006855011,-0.024978638,-0.0008368492,-0.02998352,0.008117676,-0.0059776306,0.00680542,-0.014152527,0.016418457,0.009292603,0.007865906,-0.0019302368,0.015640259,0.057373047,-0.00983429,-0.009346008,-0.037078857,-0.014205933,0.005760193,0.0009636879,0.04232788,0.02949524,0.00806427,0.025558472,-0.039123535,0.018692017,0.03086853,0.02532959,0.015220642,0.0006656647,-0.01096344,-0.07489014,-0.037078857,-0.022338867,-0.06359863,0.047821045,0.03366089,0.018707275,0.042419434,0.0055122375,-0.042419434,-0.06088257,0.036712646,-0.039916992,0.0060920715,0.036895752,0.00022792816,-0.025100708,-0.0028324127,-0.003982544,0.016906738,0.04284668,0.03781128,0.044433594,0.080078125,0.05609131,0.013366699,0.012069702,0.026031494,0.035217285,-0.012138367,-0.012031555,-0.02003479,-0.011871338,0.01184082,-0.028198242,-0.010116577,-0.064819336,0.039520264,0.046203613,0.06536865,0.027908325,0.008033752,0.04333496,-0.013000488,0.0072517395,-0.030197144,-0.015602112,0.008872986,-0.060577393,0.027160645,-0.0028820038,0.016204834,-0.017654419,0.008720398,-0.005138397,0.016723633,-0.044677734,0.053131104,-0.0037517548,0.007572174,0.027740479,0.0037612915,0.030685425,0.06555176,-0.038024902,0.041625977,0.024871826,-0.02848816,-0.0040664673,0.040283203,-0.023010254,0.002746582,-0.037231445,-0.05050659,-0.011306763,-0.012283325,-0.051116943,-0.021224976,-0.008041382,-0.00054836273,0.0262146,-0.049102783,-0.022384644,0.002506256,-0.003753662,-0.026824951,-0.0058174133,-0.047912598,0.023712158,0.016143799,-0.026901245,-0.007419586,-0.0011224747,-0.002374649,-0.016235352,0.00036478043,0.027145386,-0.031677246,-0.03994751,0.01260376,-0.0066871643,0.025970459,-0.0067863464,0.031677246,-0.00015366077,0.042297363,0.04095459,-0.0038261414,-0.0073661804,-0.04788208,0.020492554,-0.033843994,0.00028181076,0.025497437,-0.029434204,-0.0076446533,-0.021194458,-0.025283813,-0.018371582,-0.0059394836,-0.037963867,-0.015213013,0.011268616,-0.0055122375,-0.04248047,-0.032928467,-0.038360596,-0.026321411,0.05154419,0.02268982,-0.0019187927,-0.08123779,-0.017868042,0.052215576,0.0010700226,0.025680542,-0.014465332,-0.02368164,-0.0070381165,-0.025543213,0.0102005005,0.0066108704,0.03366089,-0.008674622,-0.016616821,0.02760315,0.023925781,0.028823853,0.011917114,0.0025482178,0.043029785,-0.027160645,0.0056114197,-0.00047945976,0.052459717,0.026351929,-0.019958496,-0.04953003,0.021057129,0.015670776,0.020080566,-0.03451538,0.011756897,-0.0016441345,0.0026874542,0.0066184998,-0.022827148,-0.01210022,-0.017471313,-0.04623413,-0.08795166,0.045410156,-0.0024852753,0.022155762,0.012916565,0.019165039,0.0143585205,0.00598526,-0.020736694,0.03692627,-0.019119263,-0.02859497,-0.041656494,-0.017440796,-0.013198853,-0.009521484,-0.017288208,0.018417358,-0.028640747,0.018234253,0.006752014,-0.01512146,0.009437561,-0.0007972717,-0.014007568,0.023773193,0.00970459,0.01525116,0.040008545,0.02166748,-0.033325195,0.010101318,0.009460449,-0.00006645918,0.0124053955,0.039855957,0.015731812,-0.008621216,-0.00085926056,-0.00087213516,-0.017059326,-0.028533936,0.015808105,0.008522034,0.018936157,-0.004890442,-0.009819031,0.025131226,0.017944336,-0.033172607,-0.005794525,0.027572632,0.01210022,-0.025482178,0.0024738312,0.040405273,0.042510986,-0.015472412,0.0143585205,-0.0069274902,0.027496338,0.018951416,0.013427734,-0.011878967,0.008277893,-0.0033416748,0.024719238,0.003435135,-0.016494751,0.02418518,0.010032654,0.039276123,0.015571594,-0.007785797,-0.010902405,-0.018875122,0.0034923553,0.0008325577,-0.013061523,0.013633728,0.032409668,0.027893066,-0.033996582,0.022140503,-0.008216858,-0.022323608,-0.023757935,0.017532349,0.04107666,-0.019699097,-0.023345947,0.021865845,0.0064086914,0.0155181885,-0.03945923,-0.012458801,-0.007972717,0.010543823,-0.032165527,-0.052093506,-0.030349731,-0.012313843,0.031829834,0.008293152,0.020019531,0.018569946,-0.019088745,0.010803223,0.020248413,-0.0033435822,0.00073337555,-0.019332886,-0.033691406,0.016494751,0.00605011,-0.0079193115,-0.034240723,-0.00356102,-0.015991211,-0.0154800415,-0.0044898987,-0.013969421,-0.0045433044,-0.016052246,-0.00024485588,0.029724121,0.006855011,0.009651184,-0.025909424,-0.03237915,-0.011329651,0.025650024,0.010940552,-0.04232788,0.026885986,-0.014587402,-0.0036582947,-0.0036773682,0.027755737,0.0017662048,0.030792236,0.0044784546,0.032714844,-0.028335571,0.025726318,-0.025741577,-0.008758545,0.013023376,-0.018173218,-0.018096924,-0.02619934,-0.024871826,0.04800415,-0.0018186569,-0.0054893494,-0.025161743,-0.037506104,0.0027160645,-0.04925537,0.0101623535,0.057647705,0.031066895,-0.014022827,0.0039100647,-0.0018024445,-0.016342163,-0.018157959,0.0040893555,-0.020202637,0.027557373,0.016189575,0.00012350082,-0.03866577,-0.00705719,-0.033447266,0.0032138824,-0.05557251,-0.04058838,-0.013763428,-0.019851685,-0.016494751,0.015403748,-0.019744873,-0.015640259,-0.009735107,-0.046081543,0.020614624,-0.01146698,-0.0022010803,0.0006737709,-0.028411865,-0.005504608,-0.00010073185,-0.008674622,0.036956787,-0.00365448,-0.028762817,-0.03579712,0.0048294067,0.018737793,0.035095215,-0.0016860962,-0.021072388,0.01600647,-0.010360718,-0.06427002,-0.020126343,-0.017532349,0.0024318695,-0.021347046,-0.0037021637,-0.040130615,0.011688232,-0.035217285,0.0023097992,0.003873825,0.008071899,-0.00054597855,0.0090789795,0.018630981,-0.008079529,-0.016464233,-0.036224365,-0.0023517609,0.010154724,0.0021381378,0.012672424,0.05935669,-0.010551453,-0.019638062,-0.0005722046,0.0045394897,0.018981934,-0.024917603,0.007133484,0.0048179626,0.0018625259,-0.006427765,-0.006477356,-0.0112838745,-0.0035629272,0.079589844,0.0068511963,-0.0013408661,-0.018371582,-0.010169983,0.028457642,0.025634766,-0.031341553,-0.014305115,-0.036071777,0.0093307495,-0.018035889,0.016799927,0.00026154518,0.029800415,-0.015899658,-0.0463562,-0.018295288,0.003583908,-0.012687683,-0.06976318,-0.028747559,-0.06048584,-0.0025787354,-0.03414917,-0.00019729137,0.015991211,0.030807495,-0.025634766,-0.09295654,-0.014373779,0.022827148,-0.017974854,-0.0007843971,-0.015655518,0.0061912537,0.020385742,-0.059753418,0.017349243,0.027038574,-0.03616333,-0.016296387,-0.007972717,0.010787964,-0.010307312,-0.009986877,0.0049438477,-0.006713867,0.00699234,-0.043884277,0.0121154785,-0.017364502,0.019119263,-0.009185791,0.017227173,-0.019744873,-0.0016336441,0.05429077,-0.04849243,0.021591187,0.039764404,0.01890564,-0.011108398,0.015365601,0.013298035,-0.034698486,-0.006702423,0.03643799,0.0018062592,0.0418396,-0.019577026,0.024414062,0.005420685,-0.0062179565,0.0032291412,-0.02029419,-0.004600525,-0.040374756,-0.036102295,0.025177002,0.0071411133,0.007160187,-0.0062675476,-0.009765625,0.004878998,0.02027893,-0.011802673,-0.014678955,-0.020217896,-0.028533936,0.019866943,-0.010154724,0.0072517395,-0.009216309,0.026260376,-0.004501343,0.046844482,0.0054626465,-0.016677856,-0.007610321,0.032226562,0.0033798218,-0.009498596,0.015457153,0.017242432,0.031219482,0.0070877075,0.0041542053,-0.039520264,-0.024414062,-0.0134887695,-0.003917694,0.012969971,-0.0082473755,-0.005054474,0.023605347,0.014305115,-0.009025574,-0.0357666,0.012779236,-0.03756714,-0.0236969,0.019363403,-0.03225708,0.03161621,0.023864746,-0.0016784668,0.022735596,-0.008041382,0.040496826,-0.0008187294,-0.0031375885,0.055145264,0.026428223,0.021972656,-0.018875122,0.0099487305,-0.016204834,-0.014671326,-0.0038223267,-0.017700195,-0.0029201508,0.036712646,-0.020965576,-0.00063085556,0.021957397,0.005466461,-0.0016803741,0.023544312,0.012062073,0.02217102,-0.000019550323,0.03768921,-0.041107178,0.042907715,0.01651001,-0.018737793,-0.032196045,0.018173218,-0.023010254,0.009460449,0.0045433044,-0.017333984,0.029693604,-0.012535095,0.022491455,-0.02104187,-0.004901886,0.008110046,-0.03250122,-0.011680603,0.033050537,-0.011947632,-0.0124435425,0.012832642,-0.028259277,0.030395508,-0.04953003,0.036132812,-0.014099121,-0.009399414,0.0019321442,-0.02998352,-0.03930664,-0.0013999939,-0.008682251,-0.013427734,-0.012428284,0.034973145,0.02407837,0.034362793,0.039978027,0.010543823,0.003686905,-0.025466919,-0.039123535,0.015945435,-0.009895325,0.036071777,-0.0018205643,0.029312134,0.046875,-0.004421234,0.019699097,0.028411865,0.038391113,0.021408081,0.0074310303,-0.0012712479,-0.000813961,0.00037765503,0.025375366,0.005832672,0.04269409,-0.049621582,0.027450562,0.03186035,0.007209778,-0.010246277,0.042541504,0.07366943,0.0018978119,-0.020629883,0.045440674,-0.008468628,-0.01525116,-0.010673523,-0.0181427,0.03201294,0.002401352,0.04586792,0.039611816,0.011543274,0.00541687,0.02180481,-0.0070114136,-0.017944336,0.03616333,0.012817383,-0.0039711,-0.023345947,-0.013504028,-0.0036735535,-0.04006958,-0.02949524,0.0036449432,-0.0127334595,-0.0035514832,-0.007873535,0.0041122437,-0.0037612915,0.019378662,0.034210205,0.016525269,-0.008934021,0.037231445,0.004928589,-0.006916046,0.030136108,-0.00048065186,0.03265381,-0.013008118,-0.027114868,0.010818481,0.021133423,-0.0057525635,-0.03640747,0.006702423,0.017745972,0.057739258,0.03555298,-0.028335571,0.015029907,0.023803711,0.032104492,0.015327454,0.05682373,0.017227173,0.019378662,0.031799316,0.028015137,0.01953125,-0.024871826,0.009101868,-0.0015459061,0.012008667,0.002149582,0.0018129349,0.0009994507,-0.022201538,0.026779175,-0.0015325546,-0.002603531,0.028335571,0.013618469,-0.019042969,-0.026321411,0.0060920715,0.009559631,-0.009590149,-0.0030384064,0.02482605,-0.022338867,0.023773193,0.014678955,0.029006958,-0.019851685,0.03579712,0.0031471252,-0.016983032,0.01701355,0.024429321,-0.045684814,0.010955811,-0.0064926147,-0.003868103,-0.04159546,0.027420044,0.021835327,-0.027008057,0.018798828,0.003370285,0.0029754639,0.002922058,0.029953003,0.014205933,0.0071792603,0.014076233,-0.013969421,0.040740967,0.05065918,0.010360718,-0.004623413,-0.011054993,0.0012512207,-0.011695862,-0.007926941,-0.014579773,0.0075035095,-0.014808655,-0.021911621,-0.003786087,0.027755737,-0.0054244995,0.02708435,-0.002456665,0.0018482208,0.0059661865,0.032592773,0.012290955,-0.006263733,-0.010406494,0.0061569214,-0.018508911,0.050933838,0.025283813,0.0154418945,0.030029297,-0.004272461,-0.015899658,-0.012809753,-0.00078582764,0.019439697,-0.026489258,0.031066895,0.0017995834,0.0043754578,-0.01689148,-0.040039062,0.0134887695,-0.012268066,-0.023590088,-0.024536133,0.015686035,0.010971069,0.028823853,0.020629883,0.024719238,-0.010887146,0.06707764,0.0076560974,0.05255127,-0.0055007935,-0.008743286,0.037078857,0.033569336,0.04333496,0.016967773,0.030792236,-0.019683838,0.026260376,0.024307251,0.020462036,0.017868042,0.009437561,-0.020370483,0.04437256,-0.001964569,0.031204224,-0.013320923,0.013282776,0.0075263977,-0.0054092407,-0.0119018555,0.0048675537,-0.0049743652,0.017944336,0.029769897,-0.02180481,-0.0048713684,-0.010284424,-0.008865356,0.030426025,-0.014877319,-0.013725281,-0.00091171265,0.0012874603,0.0067214966,-0.035095215,-0.02659607,0.005302429,0.018096924,-0.044281006,-0.00919342,0.009819031,0.01398468,-0.025802612,0.015975952,0.014450073,0.0051193237,-0.007873535,0.044158936,-0.016708374,0.030426025,-0.014129639,0.035858154,0.03366089,0.010688782,-0.016403198,-0.0082092285,-0.006290436,-0.024353027,0.0071525574,0.026779175,-0.024627686,-0.008354187,0.010940552,-0.01965332,0.018035889,-0.014343262,-0.0129776,0.012435913,-0.008636475,-0.012161255,-0.016189575,0.016555786,-0.00048017502,0.013572693,-0.004890442,-0.007858276,0.017303467,0.036743164,-0.0021419525,-0.0234375,-0.0022773743,0.00541687,0.016281128,-0.03668213,-0.019729614,0.0070114136,-0.043060303,0.012420654,0.013572693,-0.0027103424,0.01838684,-0.01171875,-0.004611969,0.02041626,0.00053167343,0.020477295,-0.0035934448,0.010345459,0.023529053,-0.013671875,0.0031166077,-0.03656006,-0.009666443,0.0057792664,0.031341553,0.02218628,-0.015625,0.026641846,-0.0040893555,0.006515503,0.008041382,-0.0154418945,0.042053223,-0.02609253,-0.0047950745,-0.0032348633,0.023773193,-0.0062408447,0.0008382797,-0.00806427,0.042785645,0.0463562,-0.0031700134,-0.004272461,0.02722168,0.019714355,-0.0029277802,0.03894043,-0.00071668625,0.039916992,0.027679443,-0.032836914,-0.028793335,0.0032043457,-0.0017766953,-0.014564514,0.033477783,-0.01826477,-0.015045166,0.012527466,0.028717041,-0.0049552917,-0.026809692,-0.019866943,-0.015174866,-0.015930176,0.004573822,-0.011459351,0.0049591064,-0.004737854,-0.015930176,0.0070648193,-0.027709961,-0.050872803,-0.018112183,0.0019044876,-0.01096344,-0.046173096,0.021835327,-0.02067566,-0.0029945374,-0.033416748,-0.011299133,-0.012481689,0.033203125,-0.009773254,-0.0025577545,0.031829834,0.023651123,0.018203735,0.008491516,0.035064697,-0.022033691,-0.0345459,-0.008300781,0.010406494,-0.014205933,0.016662598,0.0015153885,0.02909851,0.012664795,-0.012771606,0.0041236877,-0.0010223389,-0.020477295,-0.011917114,-0.017623901,-0.01914978,0.027191162,0.011642456,0.017227173,-0.01071167,0.030395508,-0.013801575,-0.0024604797,0.03881836,0.035736084,0.0068511963,0.031311035,-0.0014810562,-0.010696411,-0.018600464,0.000032007694,-0.015289307,-0.0071983337,0.0084991455,-0.003868103,-0.010307312,0.004650116,0.015220642,-0.014930725,-0.020996094,0.012580872,0.01171875,-0.0013036728,0.025054932,0.019210815,-0.0015907288,-0.02078247,-0.015686035,0.010414124,0.042816162,0.020309448,-0.01864624,0.0021591187,-0.0048065186,-0.000030040741,0.00522995,0.011489868,-0.026138306,-0.028900146,-0.015991211,-0.014450073,0.016937256,-0.0006198883,-0.0050849915,-0.012580872,0.016342163,0.002023697,-0.04031372,-0.006587982,0.018707275,0.0340271,-0.0040740967,-0.026748657,-0.0099487305,0.008522034,-0.019378662,-0.012870789,-0.037628174,-0.046691895,0.014472961,-0.024154663,0.004219055,-0.01637268,-0.009178162,-0.0075149536,-0.00907135,0.00894928,0.016342163,0.02960205,-0.012016296,-0.0029239655,0.024368286,0.02027893,-0.02571106,0.014251709,-0.025039673,-0.008529663,0.025100708,0.017669678,0.005126953,-0.03768921,0.038604736,-0.014671326,-0.004169464,0.022964478,0.008277893,0.01776123,-0.044769287,0.008415222,0.0069084167,-0.011161804,0.025985718,-0.0129852295,-0.0340271,-0.004085541,-0.020706177,-0.027496338,0.011482239,0.016921997,0.044952393,-0.007911682,0.0181427,-0.009269714,-0.027328491,0.0040245056,-0.0052108765,-0.020233154,0.00258255,0.024520874,0.0033283234,0.008544922,-0.01713562,-0.0018644333,-0.027038574,0.002105713,0.01876831,-0.0023727417,0.008987427,0.031219482,0.028793335,0.03640747,0.017608643,0.017364502,0.010749817,-0.005859375,-0.0017738342,-0.008125305,0.04611206,0.00541687,-0.021957397,0.020202637,0.005458832,-0.042144775,-0.010108948,-0.021148682,-0.0024166107,-0.021957397,0.023895264,-0.0008773804,0.016860962,-0.010040283,0.011352539,-0.021514893,-0.0045394897,-0.027526855,-0.008285522,-0.028564453,-0.0064201355,0.014045715,-0.0020427704,0.016723633,0.008392334,-0.022232056,0.021972656,0.042877197,-0.007232666,-0.022979736,-0.024612427,0.0077934265,0.01272583,0.0038223267,0.0016803741,-0.010032654,-0.020324707,0.0099487305,-0.008712769,0.020095825,-0.019485474,0.02960205,0.014373779,-0.005897522,0.0021209717,0.02961731,-0.017623901,-0.02041626,0.009857178,0.01158905,0.031433105,0.034240723,-0.010406494,0.02607727,0.020965576,-0.048187256,0.047851562,-0.00075674057,0.032836914,-0.028671265,0.0005698204,-0.039855957,-0.03845215,-0.0050239563,0.00049829483],"createdAt":"2026-04-21T18:32:24.447Z","updatedAt":"2026-04-22T01:02:20.200Z","lastSeenAt":"2026-04-22T01:02:20.200Z","tsv":"'/api/v1/lab/results/84':36,158 '/lab/results/84':84 '0.02':12,28,92,152 '000':96 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':211 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':214 '20':95 '300':222 '402':200 '6':102 'Base network API' 'USDC micropayment API' 'accept':187 'access':89,112,183 'address':210 'advertis':111,168 'ai/ml':56 'analysi':130 'analyt':55 'api':52,88,105,182 'application/json':192 'avail':233 'base':9,25,77,97,216 'beyond':178 'broader':119 'call':4,20,51 'captur':198 'categori':169 'challeng':195 'classif':133 'clear':162 'confirm':201 'convers':145 'cost':91 'data':54,59,126 'decim':103 'detail':227 'document':228 'embed':134 'endpoint':7,23,34,64,122,159,186,203 'estim':142 'exact':171 'exampl':230 'exchang':137 'export':127 'feed':136 'finance/web3':58 'gas':141 'gate':66 'generat':147 'generic':180 'geocod':143 'grant':114 'howev':155 'http':199 'immedi':115 'infer':57 'infrastructur':61 'insight':128 'json-response' 'key':106 'lab':5,21 'lab results API' 'label':86,184 'limit':109 'list':121 'live':205 'lowpaymentfee' 'lowpaymentfee.com':41 'made':208 'map':163 'maximum':219 'metric':124 'network':78 'no-api-key' 'offer':44 'openapi':225 'part':38 'path':83 'pay':2,18,49 'pay-per-cal':1,17,48 'pay-per-call' 'pay-per-request API' 'payload':173 'payment':72,117,206 'per':3,13,19,29,50,93 'platform':42,120 'point':154 'post':188 'post-method' 'premium':87,181 'premium API access' 'price':135,153 'protocol':70 'purpos':175 'quot':140 'rate':108,138 'report':125 'request':14,30,94,189 'resourc':81 'respons':172,231 'result':6,22 'return':191 'second':223 'sentiment':129 'settl':71 'span':53 'spec':226 'specif':80,157 'success':197 'suit':46 'summar':132 'text':131 'timeout':220 'token':139 'undocu':177 'unit':98 'upon':116 'usdc':16,32,74,100,213 'usdc-base' 'use':212 'util':62 'valid':144 'via':10,26,67 'x402':11,27,69,194 'x402 paid endpoint' 'x402-payment'","prices":[{"id":"f3caa694-2f21-4db2-988f-d05f3111b76c","listingId":"878a93c0-7d88-482e-a7fd-96c2c9a44587","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/lab/results/84","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:24.447Z"}],"sources":[{"listingId":"878a93c0-7d88-482e-a7fd-96c2c9a44587","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/lab/results/84","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:24.447Z","lastSeenAt":"2026-04-22T01:02:20.200Z"}],"details":{"listingId":"878a93c0-7d88-482e-a7fd-96c2c9a44587","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/lab/results/84 \\\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 endpoint returns a 402 x402 challenge with USDC on Base, maxAmountRequired 20000 (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/lab/results/84"},{"claim":"All APIs are priced at $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/lab/results/84"},{"claim":"Payment recipient address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/lab/results/84"}],"useCases":["Accessing gated lab results data via a single micropayment","Programmatic pay-per-call data retrieval without subscription or API key","Agent-driven workflows that need on-demand premium data access"],"bestFor":["Developers wanting zero-commitment, pay-as-you-go API access","AI agents that can settle x402 payments in USDC on Base","Users who need instant access without registration or API keys"],"notFor":["Users who need detailed documentation or guaranteed SLAs before purchasing","Bulk data consumers who need high-volume discounted pricing","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:04.132Z"},"updatedAt":"2026-04-22T01:02:20.200Z"}}