{"id":"f69121f0-1529-4de8-b66f-a08e657cba4e","shortId":"K7VpD5","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific path `/api/v1/accounts/67` appears to be one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.\n\nThe x402 challenge confirms the endpoint is live and accepts payment on the Base network using USDC (contract 0x8335…2913) with a max amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). Payment is made via the `exact` scheme with a 300-second timeout. The endpoint accepts HTTP POST requests and returns `application/json` responses. No API keys or rate limits are advertised; access is granted purely through per-call micropayments.\n\nDocumentation is extremely sparse — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/accounts/67` endpoint specifically returns. The provider's landing page lists many other endpoints (metrics, reports, sentiment analysis, summarization, etc.) but gives no detail on input parameters or response formats for any of them. The exact purpose of the `accounts/67` resource is unclear from available material.","tags":[],"capabilities":["x402-payment","usdc-base-network","per-call-micropayment","json-response","http-post"],"categories":["api","payments"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC micropayment API","Base network API","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available for this endpoint","The specific purpose and expected input/output of /api/v1/accounts/67 is undocumented","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content","Cannot verify what data or functionality this specific endpoint provides"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/67","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/accounts/67","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 with clear pricing, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of /api/v1/accounts/67 is unknown. The docs pages are empty beyond a wallet connect prompt.","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":"2026-04-19T00:32:57.110Z","embedding":[-0.019485474,-0.02961731,0.05166626,0.017456055,0.026657104,-0.03845215,-0.01576233,0.040985107,0.080200195,-0.073913574,0.03237915,-0.061523438,-0.020065308,-0.044891357,-0.038909912,0.017837524,-0.010131836,0.008514404,-0.038604736,0.024414062,0.025939941,-0.026306152,-0.017303467,0.030731201,-0.0019350052,-0.032287598,-0.030334473,-0.013908386,-0.009178162,-0.050964355,0.041625977,-0.026397705,-0.00554657,0.029129028,-0.0068969727,-0.020126343,0.008163452,0.036376953,0.028961182,-0.014091492,0.0021209717,-0.052856445,-0.00021755695,0.0011644363,-0.04324341,0.000084757805,0.000770092,-0.027877808,-0.011352539,-0.0012731552,-0.03286743,-0.0116119385,0.017837524,-0.012840271,0.0006260872,0.0062713623,0.002374649,-0.028656006,-0.002254486,0.0209198,0.006046295,-0.056640625,-0.014961243,-0.011199951,0.0158844,0.05419922,-0.0019702911,0.05606079,0.012275696,0.06365967,0.04159546,0.059020996,0.026809692,0.015853882,0.004005432,-0.0044517517,0.0039367676,0.057922363,-0.015853882,-0.023910522,-0.023040771,-0.015350342,-0.051574707,-0.003522873,-0.009437561,-0.046905518,-0.011421204,0.02142334,-0.028778076,0.03050232,-0.06518555,0.003168106,-0.006298065,-0.0013685226,0.014907837,-0.0102005005,-0.02508545,0.020004272,-0.017486572,0.0013151169,0.012565613,-0.028762817,0.02331543,-0.0034561157,0.041992188,0.046325684,0.023834229,0.01676941,0.014564514,-0.009643555,-0.014091492,0.008796692,-0.012924194,-0.028167725,0.022476196,0.010368347,-0.015602112,0.020111084,-0.03036499,0.020233154,-0.05407715,0.035858154,0.013702393,-0.012046814,0.020858765,-0.04748535,0.004135132,0.016616821,-0.044189453,-0.011177063,0.011833191,0.010559082,0.040039062,-0.017684937,-0.033599854,-0.0013141632,-0.016357422,-0.02243042,-0.041168213,-0.028869629,0.03717041,-0.0423584,0.026489258,0.024505615,-0.09222412,-0.009788513,-0.046447754,0.006324768,-0.03366089,-0.0012979507,-0.0036888123,0.015144348,-0.01876831,-0.0047836304,-0.041778564,-0.02859497,-0.004432678,0.036895752,-0.023666382,0.059753418,0.004234314,0.03390503,0.025543213,0.014480591,0.030807495,0.04623413,-0.010375977,-0.06640625,-0.083496094,-0.018966675,-0.0012664795,-0.032409668,-0.026779175,-0.003856659,-0.0178833,-0.057159424,-0.021392822,-0.015144348,-0.012031555,-0.038330078,-0.0019321442,-0.015777588,0.014297485,0.004299164,-0.060791016,-0.015655518,-0.009277344,0.061157227,0.022903442,0.0076446533,0.037597656,-0.0118255615,0.078308105,0.022918701,-0.024627686,-0.034606934,0.021774292,-0.014091492,0.006389618,-0.0029144287,-0.0045661926,-0.03289795,0.0181427,0.06378174,0.02130127,-0.029769897,-0.0025424957,-0.049743652,-0.042999268,-0.029586792,0.011024475,0.0035591125,0.016983032,0.039245605,-0.026489258,-0.04888916,0.0054397583,0.019744873,0.022247314,0.055755615,0.006767273,-0.00995636,0.0013036728,0.023117065,-0.044708252,0.04434204,0.041015625,0.016616821,-0.014350891,-0.03387451,0.019943237,0.025558472,-0.028259277,0.019821167,-0.015556335,0.031173706,-0.005191803,0.034942627,0.033447266,-0.01739502,-0.00762558,-0.027282715,-0.014511108,0.033599854,0.017242432,-0.014884949,-0.041778564,-0.0869751,0.03540039,0.041870117,0.04043579,0.0069885254,0.014015198,-0.0317688,-0.008049011,-0.05508423,0.047729492,0.07977295,-0.015602112,-0.028030396,0.022521973,-0.024337769,-0.029953003,0.0011005402,-0.0055236816,-0.04156494,-0.014213562,0.005290985,-0.046783447,0.008583069,-0.0118255615,0.016708374,0.052093506,-0.0026760101,-0.044555664,-0.028060913,-0.0042304993,0.0027065277,-0.025222778,-0.0026454926,0.0057296753,0.0040016174,0.031219482,-0.010360718,0.023712158,-0.013404846,0.005783081,0.008995056,-0.0017127991,-0.02180481,-0.05230713,0.0032653809,-0.0012073517,-0.04937744,0.0011425018,-0.007881165,0.07269287,-0.05203247,0.02909851,-0.009254456,0.010528564,0.05355835,-0.015350342,-0.04522705,0.021957397,0.03024292,0.028335571,0.048736572,0.013214111,-0.029541016,-0.008605957,0.06555176,-0.0149383545,-0.007091522,0.026382446,0.01361084,0.02619934,-0.0028076172,-0.05206299,-0.041534424,-0.024475098,-0.04925537,0.005355835,-0.017944336,0.0074501038,-0.021453857,0.0014972687,-0.026168823,-0.00012660027,-0.03579712,0.029403687,-0.02557373,0.0050315857,-0.0025234222,-0.025985718,0.020751953,0.014129639,-0.00076913834,-0.012649536,0.050048828,0.023132324,-0.005756378,-0.02494812,-0.025299072,0.00037503242,0.0019302368,0.029724121,0.029953003,0.009376526,0.048980713,-0.028518677,0.0037708282,0.040618896,0.023239136,0.04244995,0.0010032654,0.0031661987,-0.05984497,-0.051757812,-0.033691406,-0.03491211,0.01914978,0.015289307,-0.010765076,0.06124878,-0.015670776,-0.01423645,-0.04800415,0.029647827,-0.042022705,-0.0012245178,0.0413208,-0.013954163,-0.019058228,-0.01386261,0.0032234192,-0.0004901886,0.022338867,0.0149002075,0.010482788,0.07556152,0.04827881,-0.0012264252,0.0107421875,0.0115356445,0.018188477,0.015037537,-0.021484375,-0.039642334,0.008071899,0.030593872,0.004547119,-0.0020332336,-0.0814209,0.061157227,0.040527344,0.07757568,0.015914917,0.00016629696,0.038604736,-0.024719238,0.0118255615,-0.03515625,-0.011917114,-0.030334473,-0.050109863,0.023956299,-0.016326904,-0.013519287,-0.02015686,0.038513184,-0.009849548,0.020507812,-0.031402588,0.03652954,-0.00030970573,-0.021026611,0.02947998,0.013809204,0.04748535,0.057678223,-0.036712646,0.045562744,0.028839111,-0.03062439,0.009590149,0.04748535,-0.02558899,-0.0017766953,-0.046875,-0.007358551,-0.0056610107,-0.023742676,-0.041168213,-0.0017166138,-0.0062942505,0.017745972,0.03213501,-0.010734558,-0.021865845,-0.0032100677,-0.010314941,-0.06072998,-0.019424438,-0.029464722,0.003917694,0.052886963,-0.027801514,0.0012340546,0.009544373,-0.010955811,-0.003036499,0.00053071976,-0.0014133453,0.008346558,-0.04083252,0.03515625,0.014602661,0.020690918,0.0039138794,0.033325195,0.019683838,0.020568848,0.043151855,0.02458191,-0.019744873,-0.061462402,0.023040771,-0.057250977,0.00749588,0.022033691,-0.02192688,-0.011451721,-0.016189575,-0.034973145,-0.018035889,-0.007320404,-0.022155762,-0.0020122528,0.012535095,-0.034332275,-0.027389526,-0.045196533,-0.015792847,-0.0022335052,0.057373047,0.019317627,0.002784729,-0.05230713,-0.0049362183,-0.001288414,0.011138916,0.01838684,-0.014404297,-0.0031528473,-0.013023376,-0.003835678,-0.009544373,-0.016418457,0.015197754,-0.013847351,-0.016159058,0.037200928,0.01576233,0.013031006,-0.0013847351,0.0077667236,0.02607727,-0.02168274,0.007171631,-0.016708374,0.044525146,-0.01436615,-0.01878357,-0.0463562,0.041992188,0.013755798,0.038146973,-0.03515625,0.007106781,-0.006008148,0.012191772,0.008529663,-0.0058937073,-0.006866455,-0.009277344,-0.0519104,-0.08404541,0.040100098,-0.020263672,0.029129028,0.013442993,0.0070991516,0.020721436,-0.0023784637,0.0019779205,0.019851685,-0.026000977,-0.019760132,-0.02947998,-0.024368286,-0.008430481,-0.016021729,-0.017089844,0.011802673,-0.026473999,0.018554688,-0.008361816,-0.017181396,0.023223877,-0.010040283,-0.0016851425,0.028961182,-0.00070142746,0.0035972595,0.042236328,0.0067100525,-0.033813477,0.03463745,-0.0011253357,0.0012350082,-0.007007599,0.047851562,0.043762207,-0.0022792816,-0.013809204,0.0013084412,-0.010406494,-0.025665283,0.008285522,0.007843018,0.02116394,-0.006088257,-0.042999268,0.024932861,0.0028057098,-0.036376953,-0.016189575,0.015274048,0.021697998,-0.036468506,0.013519287,0.026947021,0.055755615,-0.029907227,0.0055007935,0.008155823,0.02973938,0.037475586,0.012367249,-0.013305664,0.012573242,-0.01689148,0.014167786,-0.0063209534,-0.0042762756,0.00541687,0.0035629272,0.026519775,0.020065308,-0.004550934,-0.02279663,-0.03375244,-0.005584717,-0.0049743652,-0.01789856,0.012084961,0.034729004,0.029586792,-0.025650024,0.019378662,0.010231018,-0.029251099,-0.016159058,0.0056381226,0.04309082,-0.012634277,-0.019836426,0.0129852295,0.015655518,0.028762817,-0.058502197,-0.008598328,0.009307861,0.011932373,-0.026565552,-0.05532837,-0.041015625,-0.000682354,0.0357666,-0.0008444786,0.02331543,0.02003479,0.010955811,-0.009429932,0.015670776,0.0058135986,-0.017425537,-0.011146545,-0.033081055,0.018173218,0.0068969727,-0.012954712,-0.03111267,0.01651001,-0.02154541,-0.031280518,0.0058174133,-0.01449585,-0.00806427,-0.0040016174,0.0129470825,0.021453857,0.003932953,0.013389587,-0.016189575,-0.03515625,0.004348755,0.004852295,0.018493652,-0.05819702,0.025665283,-0.011260986,-0.00605011,0.0045433044,0.009246826,0.013435364,0.02015686,-0.00025558472,0.032196045,-0.058563232,0.03793335,-0.018859863,0.016967773,0.0135650635,-0.04574585,0.0011768341,-0.024215698,-0.014442444,0.034057617,-0.0069236755,-0.021530151,-0.02633667,-0.027404785,-0.018554688,-0.053741455,0.023605347,0.03225708,0.028945923,-0.030258179,0.0006084442,0.0009841919,0.0036735535,-0.009269714,0.009468079,-0.01802063,0.020263672,0.023025513,0.0004968643,-0.027557373,-0.011543274,-0.022506714,-0.0068206787,-0.042877197,-0.05218506,-0.010551453,-0.00026249886,-0.0035076141,-0.0051879883,-0.02998352,-0.027999878,-0.00045013428,-0.049346924,0.005458832,0.0069122314,0.025115967,-0.0028705597,-0.035491943,0.0043144226,0.014640808,-0.012359619,0.032958984,0.0085372925,-0.0071640015,-0.024261475,0.009063721,0.04071045,0.01374054,0.006023407,-0.016540527,-0.007980347,-0.012641907,-0.062927246,-0.0067367554,-0.0057144165,0.00044846535,-0.007701874,-0.0017547607,-0.039154053,-0.0076942444,-0.016799927,0.0016031265,0.015655518,0.009429932,0.0024700165,0.011726379,0.012931824,-0.0024700165,-0.012557983,-0.024536133,0.023147583,0.010482788,0.0048446655,0.017715454,0.045135498,0.025543213,-0.015312195,0.008735657,0.007144928,0.02935791,-0.001912117,0.0006723404,-0.018707275,0.005771637,-0.019866943,-0.010726929,-0.03677368,-0.0043678284,0.090270996,0.00000500679,-0.012809753,-0.012268066,-0.020858765,0.009742737,0.015106201,-0.037963867,0.004802704,-0.036590576,0.012084961,-0.018539429,0.02218628,0.009529114,0.028335571,-0.021469116,-0.061157227,-0.009269714,0.0048942566,-0.028579712,-0.066101074,-0.008728027,-0.064819336,-0.012573242,-0.0052948,-0.01914978,0.0037250519,0.0073394775,-0.008071899,-0.09100342,-0.0035858154,0.050231934,0.0043525696,0.028366089,-0.008087158,0.017471313,0.019515991,-0.034088135,-0.013648987,0.035308838,-0.021057129,-0.010131836,-0.029846191,0.032196045,-0.008216858,-0.031311035,0.020889282,0.0048217773,0.020950317,-0.0077934265,0.014442444,-0.008483887,0.004497528,-0.015419006,0.018997192,-0.012939453,-0.01637268,0.036224365,-0.053985596,0.019302368,0.027404785,-0.000004708767,0.0014562607,0.02267456,0.03942871,-0.043670654,-0.023864746,0.016479492,0.0062713623,0.021697998,-0.021224976,0.040100098,0.014053345,-0.014328003,0.026046753,-0.018371582,-0.0087890625,-0.039855957,-0.018966675,0.030426025,-0.009857178,0.029281616,-0.009971619,0.0052604675,0.013824463,0.00021636486,0.008094788,-0.004108429,-0.026763916,-0.0064811707,-0.003194809,0.0001538992,0.0020656586,0.001294136,0.024612427,0.012481689,0.037384033,0.020431519,0.0013237,-0.005252838,0.016189575,-0.025100708,0.0043907166,0.026321411,0.000106334686,0.013923645,0.009803772,0.013023376,-0.050872803,-0.022979736,-0.029724121,-0.0075149536,-0.00283432,-0.0126953125,-0.02281189,-0.016708374,0.004573822,-0.005290985,-0.025360107,-0.006542206,-0.033203125,-0.030761719,-0.009315491,-0.007255554,0.01007843,-0.010314941,0.0041236877,0.01751709,0.007282257,0.051727295,0.015991211,-0.010719299,0.027648926,0.038635254,0.0141067505,-0.026550293,0.0061531067,-0.016647339,0.0034561157,0.006538391,-0.008575439,0.018585205,0.035461426,-0.014457703,0.0036506653,0.0024471283,0.035705566,-0.0259552,0.007736206,-0.008705139,0.03387451,-0.0052604675,0.031829834,-0.03173828,0.011138916,0.024856567,-0.006088257,-0.002910614,-0.0076942444,-0.03366089,0.01360321,0.0059127808,-0.009651184,0.039886475,0.015457153,0.017318726,-0.03375244,0.0036888123,0.0017328262,-0.029846191,-0.015167236,0.033203125,0.0061569214,0.0025253296,0.011817932,-0.04055786,0.04019165,-0.02709961,0.0154953,0.0028362274,0.016204834,-0.010948181,-0.022140503,-0.004524231,-0.013290405,-0.011650085,0.002632141,-0.0036849976,0.050048828,0.024169922,0.036193848,0.049194336,0.013175964,0.0082092285,-0.042541504,-0.02017212,0.0077781677,-0.025299072,0.015258789,-0.01876831,0.056640625,0.038208008,0.009269714,0.02859497,0.03933716,0.022842407,0.0026855469,0.016281128,-0.012062073,0.012397766,-0.008049011,0.013572693,-0.0014095306,0.04901123,-0.021911621,0.016525269,0.018814087,0.028808594,-0.033477783,0.03237915,0.0637207,0.027770996,-0.0141067505,0.026733398,-0.00068616867,-0.019058228,-0.005344391,-0.023208618,0.06161499,0.007080078,0.041168213,0.054260254,0.013809204,-0.0078125,0.034606934,-0.034729004,-0.018707275,0.06213379,0.019760132,0.001405716,-0.004787445,-0.0052986145,-0.00029349327,-0.04901123,-0.030838013,0.023391724,-0.0036754608,0.005180359,0.00093984604,0.00033259392,-0.015197754,0.010406494,0.028961182,0.013069153,-0.0128479,0.016555786,0.027908325,-0.0035076141,0.016418457,0.007183075,0.023330688,-0.033477783,-0.019302368,0.017410278,0.02015686,0.0011062622,-0.012680054,0.017654419,0.007194519,0.06021118,0.041534424,-0.015312195,0.01335144,0.04083252,0.016952515,-0.008712769,0.04232788,0.03463745,0.008514404,0.034942627,0.039398193,0.027145386,-0.037902832,0.019927979,0.01235199,0.006126404,-0.016326904,-0.011413574,0.008552551,-0.020874023,0.02230835,0.0020484924,-0.014587402,0.012535095,0.014884949,0.0011672974,-0.0021591187,-0.012283325,0.01386261,-0.022628784,-0.0009059906,0.012268066,-0.016708374,0.030883789,-0.0054244995,0.031341553,-0.018463135,0.011619568,0.011222839,-0.017715454,-0.008529663,0.027130127,-0.037261963,0.004825592,-0.00043225288,-0.000579834,-0.048553467,0.016021729,0.017929077,-0.005138397,0.026412964,0.004005432,-0.00026130676,0.008117676,0.019241333,0.0068206787,-0.0035305023,-0.005832672,-0.015426636,0.027145386,0.03213501,-0.010177612,0.012832642,-0.020263672,-0.011108398,0.0057792664,-0.01272583,-0.0048675537,-0.017318726,-0.034973145,-0.03567505,0.011413574,0.03010559,0.026367188,0.035461426,-0.018112183,-0.018966675,0.00655365,0.03152466,0.012573242,0.0071754456,-0.012519836,0.026611328,-0.015426636,0.053131104,0.030593872,0.010871887,0.029434204,-0.022628784,-0.016738892,-0.0060539246,-0.016174316,0.03375244,-0.020614624,0.017471313,0.0079574585,0.027954102,-0.012962341,-0.034179688,0.016647339,-0.009300232,-0.010360718,-0.029800415,0.011207581,0.005290985,0.030776978,0.039916992,0.022079468,-0.025299072,0.061462402,-0.016189575,0.04525757,-0.014129639,-0.010292053,0.05117798,0.028503418,0.038085938,0.021697998,0.017074585,-0.0446167,0.012825012,0.045806885,0.0178833,0.009391785,-0.013069153,-0.027404785,0.02947998,0.0034809113,0.039794922,-0.0079956055,0.010467529,0.02041626,-0.015159607,-0.003982544,0.0021305084,-0.013023376,0.00037193298,0.037597656,-0.030838013,-0.008804321,-0.024612427,-0.013679504,0.020217896,-0.0149002075,0.005657196,0.005706787,-0.02748108,0.015182495,-0.030288696,-0.018493652,0.0027370453,0.027435303,-0.0340271,-0.022201538,-0.006515503,0.008926392,-0.024978638,0.0231781,0.024597168,-0.0035858154,0.0023536682,0.03552246,-0.012275696,0.018447876,-0.010986328,0.03439331,0.03768921,-0.0029754639,-0.02268982,0.009628296,0.017593384,-0.013198853,0.0031414032,0.044921875,-0.010932922,-0.0036182404,0.000223279,-0.0231781,0.01348114,-0.008773804,-0.0061950684,0.004501343,-0.01687622,-0.0140686035,-0.013771057,0.0146484375,-0.005153656,0.016677856,-0.017440796,-0.017669678,0.009147644,0.04159546,0.026779175,-0.043121338,-0.008506775,0.006690979,0.023132324,-0.02545166,-0.0053710938,-0.004966736,-0.028778076,0.014717102,0.026016235,-0.0016965866,0.008232117,-0.02279663,0.0064888,0.03491211,0.011650085,0.030914307,0.0046463013,-0.0012540817,0.030075073,-0.01675415,-0.004524231,0.0018463135,-0.010421753,0.013519287,0.023010254,-0.00096702576,-0.022872925,0.040893555,0.0023479462,0.027435303,-0.0017194748,-0.013206482,0.024978638,-0.007331848,-0.021911621,0.007843018,0.01184082,-0.014129639,-0.033233643,-0.012931824,0.02772522,0.050964355,-0.017120361,-0.0011291504,0.020767212,0.012702942,0.029251099,0.037628174,0.007820129,0.043884277,0.026916504,-0.02230835,-0.014030457,0.025741577,0.00040769577,-0.023788452,0.024169922,-0.01966858,-0.019088745,0.0075263977,0.011665344,0.0015850067,-0.010673523,-0.017059326,-0.008270264,-0.016571045,0.024414062,-0.014091492,0.0131073,-0.023040771,-0.0009851456,0.0020599365,-0.002998352,-0.05291748,-0.022659302,-0.0040245056,-0.013305664,-0.04916382,0.00868988,-0.031219482,0.009254456,-0.01525116,-0.0017032623,-0.011726379,0.024871826,-0.016342163,-0.0014944077,0.013008118,0.023010254,0.024246216,0.00806427,0.021118164,-0.034576416,-0.02758789,-0.022476196,-0.008605957,-0.0049476624,0.019927979,-0.007736206,0.041259766,0.015602112,-0.002254486,-0.0037021637,-0.013900757,-0.001200676,-0.0047798157,-0.029067993,-0.013008118,0.025299072,0.016983032,-0.0028495789,-0.008918762,0.042022705,-0.027511597,-0.016296387,0.028259277,0.04562378,0.0023059845,0.041229248,-0.024841309,-0.0042304993,-0.010719299,0.0074691772,-0.023452759,0.012718201,0.0063095093,0.010025024,-0.016357422,0.0007472038,0.019485474,-0.0016374588,-0.016052246,0.028182983,-0.005680084,-0.013282776,0.0385437,0.009399414,0.004589081,-0.016616821,-0.011955261,0.010437012,0.03375244,0.01651001,0.0036945343,-0.012214661,0.02456665,-0.021316528,0.006465912,0.016067505,-0.026565552,-0.04071045,-0.013259888,-0.036346436,0.020217896,0.011497498,0.017700195,-0.009643555,0.014038086,-0.024246216,-0.04019165,-0.015419006,0.018112183,0.01751709,-0.007881165,-0.0044403076,0.0024223328,0.014038086,-0.023849487,0.010574341,-0.033569336,-0.034576416,-0.0054893494,-0.028244019,0.014457703,0.013000488,-0.013641357,0.003490448,-0.0008621216,0.000108361244,0.007507324,0.029464722,-0.0103302,-0.0019836426,0.017944336,0.010902405,-0.0149002075,0.0021648407,-0.019882202,0.00422287,0.024642944,-0.01651001,0.011154175,-0.013900757,0.033477783,-0.0068206787,-0.006198883,0.020614624,0.0032539368,0.01676941,-0.028503418,0.0044441223,0.0051116943,-0.0032615662,0.028686523,-0.022384644,-0.013160706,0.009880066,-0.021484375,-0.032287598,0.0071105957,0.009178162,0.031555176,-0.008903503,0.04119873,-0.014862061,-0.0069999695,0.0063285828,0.00070619583,-0.014343262,-0.007843018,0.04815674,0.00440979,-0.0022602081,-0.012817383,-0.015342712,-0.03540039,0.00078201294,0.01725769,0.0053482056,-0.012611389,0.02192688,0.009170532,0.042877197,0.0054855347,0.018569946,0.020370483,0.00642395,0.020828247,0.02558899,0.047821045,0.007358551,-0.021774292,0.012046814,0.0041007996,-0.029129028,-0.0077209473,-0.0063056946,0.00856781,-0.046966553,0.012748718,-0.003250122,0.0446167,-0.027023315,0.0140686035,-0.021316528,-0.00995636,-0.04864502,-0.01133728,-0.033966064,0.007709503,0.04156494,0.0003902912,0.024856567,0.010765076,-0.028915405,0.008621216,0.032470703,-0.00085258484,-0.011230469,0.0034332275,0.01789856,0.003396988,0.007965088,0.0070266724,-0.0034713745,-0.028625488,-0.004169464,-0.013183594,0.0029678345,-0.0074539185,0.0101623535,0.01159668,-0.010055542,-0.00844574,0.022415161,0.005077362,0.005958557,0.012565613,0.014770508,0.042114258,0.036743164,-0.006511688,0.034454346,0.017974854,-0.04055786,0.05255127,-0.003692627,0.030334473,-0.028869629,-0.012298584,-0.03564453,-0.01576233,-0.014953613,0.0037078857],"createdAt":"2026-04-18T18:39:58.874Z","updatedAt":"2026-04-22T18:31:07.602Z","lastSeenAt":"2026-04-22T18:31:07.602Z","tsv":"'/api/v1/accounts/67':47,192 '/request':13,28 '0.02':12,27,78,111 '000':107 '0x8335':99 '20':106 '2913':100 '300':126 '6':115 'Base network API' 'USDC micropayment API' 'accept':90,131 'access':7,22,38,147 'accounts/67':230 'advertis':146 'ai':67 'amount':104 'analysi':208 'analyt':66 'api':6,21,37,140,163 'appear':48 'application/json':137 'avail':235 'base':9,24,94,108 'broad':62 'call':4,19,154 'catalog':63 'challeng':83 'confirm':84 'connect':171 'content':177 'contract':98 'data':65 'decim':116 'descript':188 'detail':214 'doc':161 'document':156 'endpoint':32,54,86,130,193,204 'etc':210 'exact':122,226 'exampl':185 'extrem':158 'financ':70 'format':220 'give':212 'given':112 'grant':149 'host':60 'http':132 'http-post' 'i.e':110 'infrastructur':73 'input':216 'json-response' 'key':141 'land':199 'learn':69 'limit':144 'list':201 'live':88 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':68 'made':119 'mani':53,202 'materi':236 'max':103 'metric':205 'micropay':155 'network':95 'offer':55 'one':51 'openapi':181 'page':166,200 'paramet':217 'path':46 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'payment':42,91,117 'per':3,18,79,153 'per-cal':152 'per-call-micropayment' 'post':133 'premium':5,20,36 'premium API' 'price':76,162 'prompt':173 'protocol':43 'provid':35,58,197 'pure':150 'purpos':227 'rate':143 'readm':165 'render':168 'report':206 'request':80,134 'request/response':184 'resourc':231 'respons':138,219 'return':136,195 'schema':182 'scheme':123 'second':127 'sentiment':207 'span':64 'spars':159 'specif':45,194 'summar':209 'timeout':128 'unclear':233 'unit':109 'usdc':15,30,97,113 'usdc-base-network' 'use':96 'util':74 'via':10,25,39,120 'wallet':172 'web3':71 'x402':11,26,41,82 'x402 endpoint' 'x402-payment'","prices":[{"id":"a0cfd3ac-d542-40de-a8ca-56989a3fd60b","listingId":"f69121f0-1529-4de8-b66f-a08e657cba4e","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/accounts/67","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:58.874Z"}],"sources":[{"listingId":"f69121f0-1529-4de8-b66f-a08e657cba4e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/67","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:58.874Z","lastSeenAt":"2026-04-22T18:31:07.602Z"}],"details":{"listingId":"f69121f0-1529-4de8-b66f-a08e657cba4e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/67 \\\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 maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/67"},{"claim":"The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/67"},{"claim":"The provider lists endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing a premium API resource with per-call USDC micropayments on Base","Integrating x402-compatible payment flows into agent workflows","Retrieving account data behind a paywall without API keys"],"bestFor":["Developers experimenting with x402 micropayment protocols","Agents that can settle USDC payments on Base L2","Use cases requiring keyless, pay-as-you-go API access"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","Applications requiring free or subscription-based access models","Production workloads that need guaranteed SLAs or support"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:37.415Z"},"updatedAt":"2026-04-22T18:31:07.602Z"}}