{"id":"1e528da0-3a0e-426d-a1bc-0422a66c1e99","shortId":"UKS8Lc","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a broad set of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints are paid per-request using the x402 protocol, settling in USDC on the Base network. The specific endpoint at `/api/v1/accounts/2` is labeled \"Premium API Access\" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call.\n\nThe platform advertises categories including Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\n\nDocumentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled content. The actual behavior and response format of the `/api/v1/accounts/2` endpoint is unknown beyond its x402 challenge metadata, which indicates it accepts HTTP POST and returns `application/json`.","tags":[],"capabilities":["x402-payment","per-request-billing","usdc-settlement","base-network","data-analytics","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","crypto-data","geocoding","utility-services"],"categories":["api-platform","ai","finance","data"],"synonyms":["low payment fee","x402 api","pay per call api","micropayment api","usdc api","base network api","402 payment api"],"warnings":["Documentation pages (/docs, /api, /pricing, /README) are all empty beyond a 'Connect wallet' prompt","No OpenAPI or schema documentation available for any endpoint","The specific purpose and response format of /api/v1/accounts/2 ('Premium API Access') is undocumented","No request body schema or example responses are available — integration requires trial and error"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/2","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC payments on Base at $0.02/request. However, documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and no examples. The actual functionality of the /api/v1/accounts/2 endpoint is unclear beyond its label 'Premium API Access'.","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":"2026-04-19T00:16:45.591Z","embedding":[-0.02520752,-0.029907227,0.039855957,0.015731812,0.015350342,-0.03100586,-0.019226074,0.017715454,0.070617676,-0.055419922,0.033355713,-0.06542969,-0.028579712,-0.030639648,-0.009590149,0.011741638,-0.004535675,0.0067367554,-0.030410767,0.027572632,0.017684937,-0.010154724,-0.030700684,0.026153564,-0.00592041,-0.017715454,-0.014778137,-0.0076522827,-0.01763916,-0.046081543,0.04626465,-0.025634766,-0.003019333,0.0072364807,-0.000083208084,-0.014595032,-0.0017271042,0.036102295,0.028396606,-0.0019931793,-0.012870789,-0.064331055,0.014564514,-0.01600647,-0.064941406,-0.003080368,0.012191772,-0.019683838,0.013465881,0.00036287308,-0.04196167,0.00012600422,0.008460999,0.00022888184,0.00027418137,0.011726379,0.00025844574,-0.00554657,0.011787415,0.017501831,-0.012306213,-0.048217773,-0.018814087,-0.011985779,0.011703491,0.05319214,-0.0024337769,0.042663574,0.007118225,0.059173584,0.030014038,0.051696777,0.03277588,0.009162903,0.008232117,-0.011695862,-0.017150879,0.049835205,-0.008674622,-0.032714844,-0.019622803,-0.005924225,-0.061767578,-0.0004196167,-0.018371582,-0.044799805,-0.024368286,0.023101807,-0.032836914,0.02822876,-0.06842041,0.009124756,-0.013000488,-0.0033435822,0.013786316,-0.009857178,0.0008716583,0.010391235,-0.0028095245,0.013473511,-0.008102417,-0.0362854,0.022750854,0.006729126,0.033294678,0.059814453,0.01838684,0.007888794,0.013206482,-0.002872467,-0.021331787,0.0066986084,-0.006465912,-0.01828003,0.006134033,0.004383087,-0.016143799,0.014808655,-0.031799316,0.009223938,-0.04043579,0.05419922,0.0146484375,0.01777649,0.013641357,-0.051605225,-0.019332886,0.012413025,-0.024230957,-0.0049743652,0.011749268,0.012992859,0.024536133,-0.022094727,-0.03756714,0.0143585205,-0.023468018,-0.011947632,-0.050598145,-0.031433105,0.047973633,-0.02911377,0.02041626,0.038085938,-0.09295654,-0.025161743,-0.037078857,-0.004306793,-0.027923584,-0.012184143,-0.00434494,0.022598267,-0.016799927,-0.011627197,-0.02507019,-0.02709961,-0.0009651184,0.038146973,-0.005256653,0.056427002,-0.014213562,0.021316528,0.026229858,0.0088272095,0.0051193237,0.029769897,-0.0012569427,-0.07659912,-0.08148193,-0.020492554,-0.0033435822,-0.015838623,-0.018341064,-0.0020103455,-0.0042800903,-0.07659912,-0.009292603,-0.013183594,-0.0135650635,-0.041870117,-0.0064849854,-0.023498535,0.0075263977,-0.007133484,-0.056427002,-0.018737793,-0.025115967,0.057006836,0.028396606,0.03463745,0.02407837,-0.0028572083,0.06311035,0.029342651,-0.011543274,-0.0110321045,0.0209198,-0.021484375,0.018569946,-0.004295349,0.026397705,-0.029449463,0.03274536,0.07318115,0.010269165,-0.028625488,-0.00983429,-0.059906006,-0.05645752,-0.031585693,0.019744873,0.0104904175,-0.00091791153,0.051116943,-0.034698486,-0.032440186,0.008804321,0.020080566,0.0070114136,0.06213379,0.0104599,-0.012527466,0.029556274,0.0181427,-0.058807373,0.039489746,0.03111267,0.006919861,-0.018630981,-0.032409668,0.027145386,0.032073975,-0.0309906,0.015426636,-0.014663696,0.021728516,-0.012962341,0.013534546,0.020126343,-0.0068740845,-0.017852783,-0.02243042,-0.030776978,0.033569336,0.015319824,-0.02810669,-0.027816772,-0.0947876,0.04257202,0.027832031,0.03353882,0.0009665489,0.017303467,-0.023513794,-0.009407043,-0.06378174,0.05822754,0.06854248,-0.00025868416,-0.016342163,0.027130127,-0.0129852295,-0.028442383,0.010093689,-0.015319824,-0.038879395,-0.02494812,0.021224976,-0.05706787,0.00033140182,0.014556885,0.019058228,0.046173096,-0.01184845,-0.053985596,-0.018753052,-0.0005493164,-0.0045776367,-0.026168823,0.017059326,-0.0043754578,0.020706177,0.019943237,0.008476257,0.0135650635,-0.0077781677,-0.0058135986,-0.007659912,0.01373291,-0.008125305,-0.030014038,0.014266968,0.010391235,-0.05883789,-0.0017271042,0.0016937256,0.07495117,-0.0418396,0.03363037,-0.0030555725,0.017608643,0.044769287,-0.0071372986,-0.045959473,0.0068473816,0.026489258,0.0181427,0.051635742,0.01927185,-0.02911377,-0.012802124,0.065979004,-0.010749817,-0.00705719,0.019485474,0.014183044,0.04135132,-0.02407837,-0.057159424,-0.04309082,-0.0115737915,-0.039855957,0.025146484,-0.023086548,0.021835327,-0.016860962,0.011764526,-0.017730713,0.002948761,-0.035491943,0.015296936,-0.005104065,0.013069153,-0.010223389,-0.022399902,0.011940002,0.010192871,-0.010543823,-0.002380371,0.04083252,0.013244629,-0.010826111,-0.031036377,-0.036224365,-0.0022888184,-0.01133728,0.00724411,0.023956299,0.011886597,0.054260254,-0.026657104,-0.010749817,0.01965332,0.0126953125,0.030197144,-0.0077400208,-0.0076141357,-0.07098389,-0.046936035,-0.02218628,-0.0440979,0.016967773,0.031143188,-0.008728027,0.05722046,-0.008003235,-0.022399902,-0.038848877,0.026412964,-0.04336548,0.00082969666,0.03866577,-0.027526855,-0.025665283,0.0029678345,0.0017528534,0.003665924,0.030853271,0.017028809,0.027130127,0.08001709,0.042144775,0.010917664,0.0146102905,-0.00097227097,0.030899048,0.008506775,-0.008430481,-0.032440186,-0.011924744,0.02911377,-0.018310547,-0.018417358,-0.06903076,0.06451416,0.030639648,0.092285156,0.019241333,0.0019350052,0.041107178,-0.02557373,0.0101623535,-0.03189087,-0.03314209,-0.027938843,-0.03363037,0.035308838,-0.0116119385,0.00036120415,-0.01991272,0.041900635,-0.00831604,0.017242432,-0.025726318,0.040405273,-0.02418518,-0.01184082,0.014305115,0.010765076,0.061920166,0.059326172,-0.049224854,0.030715942,0.019119263,-0.020812988,0.005317688,0.046020508,-0.017929077,-0.0047950745,-0.061431885,-0.016998291,-0.0037441254,-0.012321472,-0.04260254,-0.0036525726,-0.002002716,0.024093628,0.03286743,-0.0058174133,-0.0073165894,-0.0040740967,-0.009017944,-0.060821533,-0.016601562,-0.039245605,-0.0039634705,0.03250122,-0.03137207,-0.010795593,-0.0055160522,-0.003578186,-0.009925842,0.0041007996,0.026611328,0.0014867783,-0.053619385,0.042877197,0.00932312,0.0158844,0.008544922,0.040008545,0.025039673,0.024520874,0.048553467,0.0140686035,-0.015083313,-0.06185913,0.022735596,-0.05053711,0.011161804,0.027572632,-0.022613525,-0.0026054382,-0.0074768066,-0.043640137,-0.024627686,0.013244629,-0.035186768,0.0022678375,0.012802124,-0.01751709,-0.018157959,-0.048583984,-0.01423645,-0.00013959408,0.06213379,0.020080566,0.013587952,-0.056274414,-0.010726929,0.009338379,0.010604858,0.03414917,-0.014808655,-0.0051345825,-0.030303955,-0.033172607,-0.00623703,-0.025817871,0.029556274,-0.009742737,-0.0019483566,0.020767212,0.0034866333,0.025543213,0.000644207,0.0040283203,0.017532349,-0.03503418,-0.005996704,-0.011100769,0.046844482,0.01360321,-0.011398315,-0.049102783,0.045318604,0.01373291,0.03451538,-0.041290283,-0.0006275177,-0.0061073303,0.009033203,0.017150879,-0.006729126,-0.004436493,-0.0063972473,-0.050445557,-0.08526611,0.033233643,-0.022338867,0.020187378,0.020339966,0.0020580292,0.032165527,-0.018539429,0.005168915,0.019226074,-0.020477295,-0.0102005005,-0.016418457,-0.02897644,-0.023544312,-0.018478394,-0.018539429,0.0184021,-0.020721436,0.008674622,-0.00932312,-0.010528564,0.021240234,0.006954193,-0.005645752,0.023391724,-0.0030231476,0.016860962,0.04623413,0.011695862,-0.04260254,0.022567749,0.0018701553,0.0037021637,-0.011772156,0.050201416,0.029083252,-0.0039978027,-0.020401001,-0.01550293,-0.017089844,-0.02583313,0.013763428,0.0079574585,0.009941101,-0.0048217773,-0.04623413,0.011604309,0.00075531006,-0.0287323,-0.02508545,0.017959595,0.010757446,-0.039886475,0.023529053,0.028259277,0.04876709,-0.027679443,0.00856781,-0.0007381439,0.034118652,0.04043579,0.0070648193,-0.008758545,0.014465332,-0.006549835,0.008331299,-0.01096344,-0.018234253,0.015464783,0.0013456345,0.022521973,0.023086548,0.0076408386,-0.024734497,-0.02532959,0.0024299622,-0.009559631,-0.025634766,0.02406311,0.021896362,0.021911621,-0.029327393,0.017303467,0.00944519,-0.023239136,-0.012916565,-0.005252838,0.038208008,-0.0070114136,-0.017974854,0.018081665,0.010894775,0.026748657,-0.059448242,-0.0129776,0.011352539,0.012199402,-0.021743774,-0.05142212,-0.03793335,-0.0026760101,0.041046143,0.0098724365,0.029022217,0.029190063,0.0076026917,-0.00075244904,0.020065308,0.003929138,-0.013961792,-0.009727478,-0.044952393,-0.009437561,-0.012168884,0.00083351135,-0.034851074,0.028076172,-0.0077781677,-0.03805542,0.0002603531,-0.010261536,-0.0018472672,-0.0049743652,0.01033783,0.025558472,0.0066490173,0.019882202,-0.015449524,-0.034454346,-0.0060806274,0.00080013275,0.015670776,-0.0574646,0.017486572,-0.011161804,-0.006439209,0.0066871643,0.016723633,0.018692017,0.01940918,0.0184021,0.04269409,-0.051513672,0.045776367,-0.027420044,0.015045166,0.0071983337,-0.03942871,-0.009002686,-0.02720642,-0.00957489,0.03491211,-0.02319336,-0.006389618,-0.028396606,-0.034423828,-0.010284424,-0.056152344,0.02067566,0.035369873,0.041229248,-0.025405884,-0.0041160583,0.008628845,0.01890564,-0.018722534,0.0020256042,-0.0143585205,0.023391724,0.023544312,-0.0072784424,-0.024871826,-0.025848389,-0.02267456,-0.0056533813,-0.04284668,-0.056365967,0.0012893677,0.0006752014,-0.00079107285,-0.005580902,-0.017028809,-0.03289795,-0.0069465637,-0.03466797,0.012237549,0.0010900497,0.025115967,0.007865906,-0.029403687,0.002527237,0.013038635,-0.016082764,0.03387451,0.012145996,-0.0063171387,-0.034118652,0.001964569,0.022354126,0.0090789795,-0.008140564,-0.017547607,-0.012039185,-0.014144897,-0.05911255,-0.0051612854,-0.0005931854,-0.01134491,-0.019317627,-0.009963989,-0.049316406,-0.0075683594,-0.017471313,-0.005176544,0.015357971,0.0107421875,-0.003419876,-0.00026249886,0.012535095,-0.0001500845,-0.004573822,-0.024963379,0.0118637085,0.011199951,0.009712219,0.030532837,0.041900635,-0.0017843246,-0.032806396,0.0055503845,0.00881958,0.024795532,-0.010864258,-0.0015192032,-0.022399902,0.015777588,-0.014709473,-0.016036987,-0.039764404,-0.002565384,0.075683594,-0.0014295578,-0.014450073,-0.018737793,-0.009231567,0.013290405,0.03250122,-0.03741455,-0.0014305115,-0.02734375,0.019958496,-0.018798828,0.01109314,-0.003206253,0.031829834,-0.017044067,-0.046875,-0.01625061,-0.0025901794,-0.019561768,-0.070007324,-0.02218628,-0.07537842,0.008979797,-0.013427734,-0.021774292,0.0031433105,0.008117676,-0.020141602,-0.07885742,0.007282257,0.051574707,0.0008172989,0.026626587,-0.00623703,0.019302368,0.021408081,-0.0335083,-0.011398315,0.022720337,-0.031433105,-0.017227173,-0.023544312,0.021118164,-0.007888794,-0.011810303,0.004989624,0.0030460358,0.022140503,-0.0066375732,0.017974854,-0.012008667,0.020019531,-0.020645142,0.010017395,-0.012756348,-0.010665894,0.041046143,-0.058166504,0.023406982,0.010765076,-0.012382507,0.012771606,0.02810669,0.047576904,-0.0390625,-0.018478394,0.017623901,0.008903503,0.026672363,-0.023147583,0.055511475,0.010543823,-0.012588501,0.022201538,-0.015014648,-0.008796692,-0.035125732,-0.030639648,0.025146484,-0.0044517517,0.017150879,-0.021316528,-0.0007414818,0.02029419,-0.0047683716,0.0054397583,-0.010284424,-0.013641357,-0.02368164,0.00674057,-0.0030231476,0.016281128,0.00349617,0.037078857,0.028839111,0.03366089,0.013877869,-0.0057411194,0.010803223,0.025726318,-0.023239136,0.0035037994,0.033203125,0.01171875,0.015556335,0.021011353,0.013519287,-0.04559326,-0.01927185,-0.02746582,-0.031097412,-0.0011024475,-0.019317627,-0.010002136,-0.010147095,0.012397766,-0.016418457,-0.025970459,-0.011734009,-0.028869629,-0.023101807,-0.002866745,-0.010658264,0.01979065,-0.004825592,0.011688232,0.0005402565,-0.0015592575,0.04284668,-0.0027484894,-0.012168884,0.031204224,0.034210205,0.02381897,-0.01991272,-0.0024089813,-0.010955811,-0.005176544,0.0012149811,-0.032714844,0.0038032532,0.042236328,-0.022094727,0.0057640076,0.0050201416,0.030853271,-0.0146102905,-0.00033950806,-0.008636475,0.017044067,0.0002541542,0.033569336,-0.04232788,0.01663208,0.005657196,-0.002861023,-0.017211914,-0.008087158,-0.029159546,0.011146545,0.0049934387,-0.0028495789,0.055511475,0.019088745,0.019638062,-0.020446777,-0.027145386,0.010551453,-0.02458191,-0.018753052,0.022644043,-0.004135132,-0.0035362244,0.011695862,-0.026855469,0.030822754,-0.039001465,0.016830444,0.008979797,0.016082764,-0.0028572083,-0.013717651,-0.0013999939,-0.0045204163,-0.017440796,0.0022449493,-0.001288414,0.055633545,0.023040771,0.027313232,0.041809082,0.020889282,0.0039100647,-0.03930664,-0.01928711,0.0020122528,-0.018447876,0.016082764,-0.018737793,0.051696777,0.030899048,0.0057296753,0.027145386,0.04425049,0.03933716,0.0043754578,0.013931274,-0.023086548,0.011817932,-0.003993988,0.030639648,-0.003944397,0.038757324,-0.03111267,0.031219482,0.012672424,0.024673462,-0.01991272,0.035705566,0.0748291,0.01637268,-0.012870789,0.029373169,-0.0047798157,-0.012565613,-0.0017185211,-0.025665283,0.046661377,0.014160156,0.046783447,0.048736572,0.009132385,-0.011100769,0.02229309,-0.02796936,-0.027359009,0.058807373,0.024383545,-0.016860962,-0.012588501,0.0032577515,0.0068206787,-0.046295166,-0.018676758,0.030349731,-0.008331299,0.0028800964,-0.0067825317,-0.0037574768,-0.01625061,0.0055122375,0.01676941,0.009536743,-0.01525116,0.016601562,0.029220581,-0.0020828247,0.025817871,-0.0021820068,0.026977539,-0.028930664,-0.026031494,0.02319336,0.023025513,0.0020561218,-0.015731812,0.023849487,0.009223938,0.039520264,0.039916992,-0.023452759,0.008293152,0.029022217,0.013626099,-0.009025574,0.057373047,0.030029297,0.011985779,0.036499023,0.03366089,0.035888672,-0.038513184,0.027542114,0.007965088,0.008117676,-0.014831543,-0.0053520203,0.000626564,-0.013092041,0.022644043,-0.0008401871,-0.0090408325,0.02229309,0.015464783,-0.014221191,-0.008308411,-0.008201599,0.011100769,-0.020309448,-0.0011873245,0.017944336,-0.017364502,0.026687622,0.008628845,0.0234375,-0.022155762,0.01689148,0.0055274963,-0.020217896,0.0007710457,0.029418945,-0.041503906,0.003698349,0.00040316582,-0.00089788437,-0.0501709,0.009803772,0.025939941,-0.012130737,0.027862549,0.011703491,-0.00030517578,-0.009559631,0.026809692,0.010559082,-0.00054836273,-0.0070343018,-0.02003479,0.020721436,0.041137695,-0.014183044,-0.0010261536,-0.033691406,-0.0090408325,0.0051231384,-0.009750366,-0.0046844482,-0.01713562,-0.02558899,-0.015655518,0.017990112,0.035095215,0.021820068,0.05456543,-0.023986816,-0.0104522705,0.008811951,0.031463623,0.0015621185,0.0045204163,0.00062561035,0.014381409,-0.018478394,0.04360962,0.039123535,0.012145996,0.033813477,-0.0017595291,-0.0075263977,0.008880615,-0.014579773,0.03225708,-0.018844604,0.008476257,0.0066223145,0.029800415,-0.014312744,-0.034118652,0.0050582886,-0.018157959,-0.02671814,-0.028625488,0.017913818,-0.0031986237,0.029006958,0.03363037,0.030319214,-0.029525757,0.059692383,-0.00932312,0.04055786,0.0018625259,-0.01586914,0.047027588,0.021118164,0.03982544,0.01838684,0.01713562,-0.03387451,0.01763916,0.028839111,0.022262573,0.008216858,0.010368347,-0.019958496,0.035461426,-0.0051002502,0.03768921,-0.002248764,0.005004883,0.020706177,-0.005783081,-0.006038666,-0.0019626617,-0.0053710938,0.0049934387,0.04525757,-0.026351929,-0.008773804,-0.03286743,-0.009048462,0.028900146,-0.012718201,0.0041160583,0.0007162094,-0.020935059,0.0038795471,-0.019607544,-0.028869629,0.01209259,0.030822754,-0.048583984,-0.017105103,0.00055265427,0.021392822,-0.024597168,0.02645874,0.028366089,-0.0088272095,0.005809784,0.044830322,-0.009429932,0.016921997,-0.011123657,0.026733398,0.036621094,0.008369446,-0.02897644,-0.0027217865,0.0138168335,-0.0036525726,0.01134491,0.036956787,-0.011199951,-0.0011014938,-0.009178162,-0.009429932,-0.009048462,-0.003698349,-0.008453369,0.0036888123,-0.0070266724,-0.011817932,-0.00793457,0.0039520264,-0.0062446594,0.006462097,0.0039405823,-0.017486572,0.013175964,0.03744507,0.0262146,-0.03677368,-0.0138549805,0.005630493,0.012451172,-0.021850586,-0.00774765,0.00025367737,-0.04055786,0.014343262,0.026168823,0.009635925,0.011940002,-0.02217102,0.008422852,0.029953003,0.0064048767,0.017227173,0.00868988,-0.009178162,0.018371582,-0.008605957,-0.005847931,-0.0040283203,-0.011146545,0.0096588135,0.02696228,0.000936985,-0.02319336,0.030929565,0.010574341,0.015602112,-0.0023899078,-0.015609741,0.023010254,-0.007701874,-0.0026760101,-0.0034427643,0.0129776,-0.013908386,-0.024505615,-0.002571106,0.042053223,0.060180664,-0.023025513,-0.009147644,0.020187378,0.017730713,0.021713257,0.042388916,0.0010766983,0.04321289,0.019454956,-0.019897461,-0.023086548,0.026046753,-0.004337311,-0.025558472,0.01637268,-0.015899658,-0.020767212,0.008125305,0.0026550293,0.0018558502,-0.023208618,-0.012794495,-0.014289856,-0.01411438,0.014663696,-0.0124053955,0.02178955,-0.020492554,-0.0073547363,0.012771606,-0.021057129,-0.055847168,-0.02015686,0.000243783,-0.008094788,-0.058898926,0.005329132,-0.029510498,0.0074539185,-0.02658081,0.0029144287,-0.017700195,0.014328003,-0.006919861,0.00077056885,0.0035133362,0.019119263,0.027038574,0.0047721863,0.024353027,-0.022338867,-0.017745972,-0.023239136,0.00086927414,-0.0048980713,0.018936157,0.0036754608,0.03552246,0.021713257,-0.013618469,-0.0034065247,-0.015930176,0.00035595894,-0.006454468,-0.026016235,-0.024871826,0.029022217,0.013587952,-0.0107040405,-0.0022583008,0.04425049,-0.02456665,-0.012908936,0.031677246,0.04876709,0.002609253,0.035095215,-0.026168823,0.0062828064,-0.021347046,0.0035533905,-0.01864624,0.009567261,0.010261536,0.012481689,-0.0014848709,0.014663696,0.022705078,-0.016464233,-0.015686035,0.030303955,0.011703491,-0.013908386,0.04248047,0.015625,0.006919861,-0.014671326,-0.008323669,0.019515991,0.053131104,0.015151978,0.016860962,-0.009384155,0.00894165,-0.011917114,0.012176514,0.02494812,-0.034179688,-0.04916382,-0.012870789,-0.030273438,0.027038574,0.0018815994,0.004673004,-0.015159607,0.0135269165,-0.024383545,-0.033050537,-0.016098022,0.028335571,0.016784668,-0.01689148,-0.00076818466,0.011390686,0.016403198,-0.036071777,-0.008354187,-0.04989624,-0.032836914,-0.011634827,-0.019424438,0.022888184,0.0149383545,-0.010803223,0.0026016235,0.00116539,0.004348755,-0.0023384094,0.023239136,-0.01184082,0.0072898865,0.024139404,0.0146484375,-0.020126343,0.02015686,-0.0084991455,0.0033569336,0.008872986,-0.007106781,0.01247406,-0.022827148,0.032073975,-0.014923096,-0.0019760132,0.03338623,-0.005016327,0.017181396,-0.029083252,-0.004573822,-0.0018606186,-0.010627747,0.03945923,-0.019866943,-0.011787415,0.012542725,-0.010604858,-0.02557373,0.0014801025,0.017654419,0.034423828,-0.0035858154,0.059692383,-0.008926392,0.000518322,0.016693115,0.007888794,-0.015098572,0.00019538403,0.02973938,0.0013561249,0.0077400208,-0.006526947,-0.0129776,-0.032104492,-0.009651184,0.015945435,-0.0024471283,-0.017044067,0.026535034,0.011474609,0.046173096,-0.0069465637,0.02104187,0.019577026,0.0026397705,0.025924683,0.0056762695,0.05630493,0.011268616,-0.02406311,0.012207031,0.0016889572,-0.024475098,0.0020961761,-0.003206253,0.0075950623,-0.04663086,0.010803223,-0.0032176971,0.024627686,-0.015571594,0.0143966675,-0.021011353,-0.010284424,-0.0491333,-0.0016145706,-0.04373169,0.009605408,0.039886475,0.0075263977,0.034973145,0.0038375854,-0.023086548,0.02168274,0.039520264,0.0048599243,-0.022567749,-0.025863647,0.012535095,0.0038833618,0.0060157776,0.0061454773,-0.01953125,-0.020263672,-0.0018968582,-0.00092697144,0.014015198,-0.0084991455,0.027008057,0.017211914,-0.0043029785,-0.0131073,0.023925781,-0.0024757385,-0.0019054413,0.01209259,0.006717682,0.041137695,0.03274536,-0.011543274,0.033843994,0.007007599,-0.039367676,0.06185913,-0.00548172,0.037384033,-0.020126343,0.004512787,-0.03274536,-0.028366089,-0.015853882,0.0054969788],"createdAt":"2026-04-18T18:39:20.273Z","updatedAt":"2026-04-22T19:30:55.716Z","lastSeenAt":"2026-04-22T19:30:55.716Z","tsv":"'/api':166 '/api/v1/accounts/2':78,209 '/docs':165 '/pricing':167 '/readme':169 '/request':13,28 '0.02':12,27,99,145 '000':93 '20':92 '402':87 '402 payment api' 'accept':221 'access':83 'actual':202 'advertis':104 'ai':114 'ai-inference' 'ai/ml':49 'analysi':118 'analyt':48,108 'api':5,20,37,82,150 'application/json':226 'avail':196 'base':8,23,72,94 'base network api' 'base-network' 'behavior':203 'beyond':213 'broad':42 'call':4,19,101 'categori':105 'challeng':88,216 'classif':121 'classification' 'commit':158 'connect':175 'content':200 'convers':138 'crawl':199 'crypto-data' 'data':47,52,107,111 'data-analytics' 'detail':182 'document':160,191 'embed':122 'embeddings' 'enabl':36 'endpoint':45,57,76,141,210 'estim':132 'exampl':195 'exchang':127 'export':112 'extrem':162 'feed':126 'financ':123 'finance-data' 'finance/web3':51 'format':206 'gas':131 'generat':139 'geocod':136 'geocoding' 'http':222 'i.e':98 'includ':106 'indic':219 'infer':50 'infrastructur':134 'insight':113 'key':151 'label':80 'learn':116 'limit':154 'list':143 'low payment fee' 'lowpaymentfee.com':31 'machin':115 'metadata':217 'metric':109 'micropayment api' 'minimum':157 'network':9,24,73 'offer':40 'openapi':186 'page':170 'paid':59 'pay':2,17 'pay per call api' 'pay-per-cal':1,16 'per':3,18,61,100,146 'per-request':60 'per-request-billing' 'platform':6,21,38,103 'post':223 'premium':81 'price':125 'prompt':177 'protocol':66 'quot':130 'rate':128,153 'render':172 'report':110 'request':62,89,147 'request/response':189 'requir':159 'respons':205 'return':85,225 'schema':190 'sentiment':117 'sentiment-analysis' 'servic':55 'set':43 'settl':67 'span':46 'spars':163 'spec':187 'specif':75 'summar':120 'technic':181 'text':119 'text-summarization' 'token':129 'unit':95 'unknown':212 'usag':194 'usdc':15,30,69,97 'usdc api' 'usdc-settlement' 'use':63 'util':54,135 'utility-services' 'valid':137 'via':10,25 'wallet':176 'web3':124 'x402':11,26,35,65,215 'x402 api' 'x402-enabled':34 'x402-payment'","prices":[{"id":"b1d1e04e-44d3-4ea5-acf4-b4087a5729b5","listingId":"1e528da0-3a0e-426d-a1bc-0422a66c1e99","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:20.273Z"}],"sources":[{"listingId":"1e528da0-3a0e-426d-a1bc-0422a66c1e99","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/2","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:20.273Z","lastSeenAt":"2026-04-22T19:30:55.716Z"}],"details":{"listingId":"1e528da0-3a0e-426d-a1bc-0422a66c1e99","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/2 \\\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":"All endpoints 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":"The /api/v1/accounts/2 endpoint returns a 402 challenge requesting up to 20,000 base units of USDC (USD Coin, 6 decimals = $0.02) on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/2"},{"claim":"Platform offers endpoints in Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no technical content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) without API key management","Fetching real-time finance and crypto market data on a per-request payment basis","Running data analytics queries and exporting data with no subscription commitment","Using utility services like geocoding and validation with instant crypto-settled payments"],"bestFor":["Developers wanting zero-commitment, pay-as-you-go API access","AI agents that can autonomously pay for API calls via x402/USDC on Base","Projects needing low-cost micro-transactions for diverse API services"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Developers who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:39.174Z"},"updatedAt":"2026-04-22T19:30:55.716Z"}}