{"id":"f351128e-b5f3-4af5-b7ff-3a2a56c79dc0","shortId":"QHCJxL","kind":"x402","title":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402 protocol API marketplace that gates access to a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint at `/api/v1/ach/9` is listed as \"Premium API Access\" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). Payment is made via the x402 `X-PAYMENT` header with the \"exact\" scheme; no API keys, rate limits, or upfront commitments are required.\n\nThe broader platform advertises four categories of APIs: 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 listed endpoints share the same $0.02/request pricing. However, the specific functionality behind the `/api/v1/ach/9` path is not documented beyond the generic \"Premium API Access\" label — it may relate to ACH payment processing or similar financial functionality, but this is speculative.\n\nDocumentation is extremely sparse. The /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what this particular endpoint accepts or returns. The endpoint is confirmed live (returns a valid 402 challenge), but the lack of documentation makes it difficult to assess actual functionality.","tags":[],"capabilities":["x402-payment","usdc-base","per-request-micropayment","http-post","json-response"],"categories":["finance","api-marketplace"],"synonyms":["x402 API","micropayment API","pay-per-request API","USDC API","Base network API","lowpaymentfee","ACH API"],"warnings":["No documentation available — /docs, /api, /pricing, and /README pages all render only 'Connect wallet'","No OpenAPI or input/output schema provided for this endpoint","The specific functionality of /api/v1/ach/9 ('Premium API Access') is undocumented and unclear","The 'ach' path segment may imply ACH payment processing, which could involve regulated financial activity"],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/9","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/ach/9","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and the specific purpose of /api/v1/ach/9 is unclear. The listing is effectively a stub.","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":"2026-04-19T02:09:20.679Z","embedding":[-0.04135132,-0.028839111,0.03930664,0.010734558,0.01889038,-0.01083374,-0.019134521,0.019378662,0.056365967,-0.052246094,0.01651001,-0.05883789,-0.029785156,-0.016448975,-0.024765015,0.01737976,0.0020561218,-0.007144928,-0.04928589,0.043060303,0.029129028,-0.008178711,-0.016708374,0.038848877,0.0010576248,-0.027694702,-0.000018060207,-0.0084991455,-0.03869629,-0.041900635,0.026794434,-0.02998352,-0.004863739,0.018096924,-0.013282776,-0.01763916,0.004257202,0.047058105,0.02468872,-0.009109497,0.005218506,-0.03829956,0.022140503,-0.015716553,-0.04473877,-0.027755737,0.020217896,-0.018798828,-0.024536133,-0.0065231323,-0.036743164,0.0052871704,-0.018173218,0.015945435,0.021118164,0.021240234,-0.0033226013,-0.018173218,0.015586853,0.019714355,0.0038871765,-0.05117798,-0.011154175,-0.004009247,0.0103302,0.046722412,-0.013580322,0.038482666,0.012420654,0.06329346,0.04336548,0.040008545,0.031707764,-0.0015945435,0.0022392273,-0.021728516,-0.011413574,0.038970947,-0.019714355,0.010818481,-0.020446777,0.010375977,-0.06286621,-0.025741577,-0.020248413,-0.070739746,-0.023590088,0.014350891,-0.039764404,0.034301758,-0.07116699,0.000009357929,-0.02268982,0.017242432,-0.00014138222,0.0010986328,-0.015068054,0.013008118,-0.0031986237,0.007648468,-0.005382538,-0.045043945,0.021224976,0.006549835,0.052825928,0.026641846,0.006061554,0.02796936,0.008026123,-0.021224976,-0.023757935,0.005432129,-0.033294678,-0.0011453629,-0.0067863464,-0.0042800903,-0.016296387,0.013580322,-0.015197754,0.013153076,-0.062561035,0.05593872,0.020019531,-0.0023059845,0.007499695,-0.037200928,-0.010421753,0.018051147,-0.044006348,-0.010322571,0.051879883,0.012176514,0.019302368,-0.032043457,-0.02923584,0.0023784637,-0.023788452,-0.019882202,-0.053100586,-0.0036506653,0.030059814,-0.02571106,0.025360107,0.033172607,-0.07867432,0.014289856,-0.03137207,0.02067566,-0.027755737,-0.0004477501,0.0056991577,0.03189087,-0.012184143,-0.034179688,-0.024841309,-0.020950317,-0.0181427,0.029891968,-0.005001068,0.024627686,-0.004825592,0.020721436,0.013160706,-0.00024223328,0.017532349,0.037078857,-0.019760132,-0.08795166,-0.08770752,-0.03543091,-0.018569946,-0.008392334,-0.04498291,-0.0077056885,-0.02041626,-0.07330322,-0.031143188,-0.013442993,0.00712204,-0.042999268,0.0030937195,-0.014381409,0.0009775162,-0.008308411,-0.062408447,-0.02166748,-0.03451538,0.039764404,0.01890564,0.010810852,0.016860962,-0.0006008148,0.049102783,0.021575928,-0.019012451,-0.031173706,0.014297485,-0.016845703,0.059783936,-0.0039978027,0.008171082,-0.024917603,0.043670654,0.052947998,0.013702393,-0.028656006,0.0065345764,-0.043548584,-0.048950195,-0.028381348,0.0104904175,-0.004348755,-0.015960693,0.035064697,-0.031311035,-0.033325195,0.0010986328,0.021865845,0.019226074,0.045013428,-0.0028152466,0.0031032562,-0.001159668,0.040924072,-0.03555298,0.044158936,0.018951416,0.014419556,-0.011810303,-0.025360107,0.024917603,0.0390625,-0.043151855,0.0014753342,-0.010902405,0.018249512,0.0016050339,0.0077323914,0.014289856,0.0027198792,-0.015777588,-0.020492554,-0.01247406,0.03100586,0.012802124,-0.038635254,-0.04296875,-0.07019043,0.04324341,0.05029297,0.035125732,0.0110321045,-0.007549286,-0.02545166,-0.021011353,-0.08325195,0.039764404,0.07067871,-0.017578125,-0.011955261,0.033843994,0.008773804,-0.04272461,0.01436615,0.008491516,-0.015609741,-0.022567749,0.020019531,-0.041992188,0.004119873,0.021575928,0.046783447,0.057525635,-0.013435364,-0.047973633,-0.029312134,-0.016220093,0.008811951,-0.03741455,0.010101318,-0.00064849854,0.025344849,0.037200928,0.010032654,0.024642944,0.008781433,0.019805908,-0.017166138,0.0055618286,-0.021484375,-0.03491211,0.020111084,-0.007675171,-0.06781006,0.018814087,-0.001455307,0.066101074,-0.04937744,0.04626465,-0.00970459,0.02859497,0.036590576,-0.010108948,-0.038848877,0.014205933,0.026733398,0.020004272,0.03640747,0.0030593872,-0.0016613007,0.007194519,0.05532837,-0.015304565,-0.0042152405,-0.0067329407,0.023651123,0.042633057,0.007843018,-0.04815674,-0.029632568,-0.0076141357,-0.03375244,0.030380249,-0.03781128,0.030776978,0.0053749084,0.016830444,-0.022018433,0.007724762,-0.049316406,0.018005371,-0.03817749,0.005935669,-0.0119018555,-0.040740967,0.02798462,0.019210815,-0.014724731,0.023803711,0.04144287,0.029876709,-0.010406494,-0.031097412,-0.0050201416,-0.02130127,-0.01979065,0.010971069,0.01449585,0.027374268,0.049194336,-0.030197144,0.0008416176,0.019470215,0.01423645,0.013824463,0.00061893463,-0.009925842,-0.06097412,-0.078430176,-0.018829346,-0.05029297,0.01739502,0.004360199,0.005607605,0.043823242,0.00087213516,-0.01701355,-0.048675537,0.014190674,-0.04458618,-0.00598526,0.021377563,-0.024337769,-0.05429077,-0.009765625,0.004322052,0.014060974,0.019104004,0.017990112,0.019592285,0.059326172,0.027572632,0.0038108826,0.020874023,0.020385742,0.013015747,-0.020355225,-0.012290955,-0.03414917,-0.008911133,0.035614014,-0.024368286,-0.01876831,-0.065979004,0.046539307,0.030380249,0.07312012,-0.0056114197,0.021224976,0.015426636,-0.0025520325,0.02154541,-0.036712646,-0.0072364807,-0.024307251,-0.037139893,0.026489258,-0.0014038086,-0.013717651,-0.022415161,0.033966064,-0.0069236755,0.0031051636,-0.03164673,0.056365967,-0.01335144,0.004722595,0.015266418,0.012718201,0.053741455,0.054748535,-0.068359375,0.0037612915,0.024291992,-0.020507812,0.003932953,0.043273926,-0.002527237,-0.0084991455,-0.062927246,-0.032836914,-0.013473511,-0.013633728,-0.05718994,0.0019435883,-0.005256653,0.029159546,0.008041382,-0.0011320114,-0.035888672,0.0024929047,-0.011116028,-0.06011963,0.008354187,-0.060424805,0.01638794,0.030319214,-0.030288696,0.0061683655,-0.012008667,-0.004322052,-0.011817932,0.0115356445,0.011131287,0.01574707,-0.04449463,0.05026245,0.017059326,0.008522034,0.015556335,0.047088623,0.018600464,0.009361267,0.06390381,0.015823364,-0.022003174,-0.055664062,0.02192688,-0.05065918,0.0037136078,-0.004749298,-0.021697998,0.005153656,-0.0029087067,-0.030532837,-0.0077781677,-0.0029029846,-0.025405884,0.009963989,0.018081665,-0.039611816,-0.033813477,-0.068481445,-0.031951904,-0.017196655,0.07519531,0.01108551,0.0023918152,-0.06365967,-0.00844574,0.013648987,0.002916336,0.029129028,-0.015083313,-0.020355225,-0.0064964294,-0.038726807,-0.019210815,-0.025039673,0.04473877,0.0026397705,-0.010002136,0.024795532,0.007091522,-0.0029716492,-0.015068054,-0.0033988953,0.020309448,-0.022491455,-0.01889038,-0.030563354,0.015640259,0.007209778,-0.007843018,-0.039733887,0.048095703,0.009468079,0.041229248,-0.043670654,-0.0065994263,-0.018798828,0.0126953125,0.031219482,-0.0047798157,-0.0045166016,0.017791748,-0.039642334,-0.05581665,0.022827148,-0.01739502,0.026992798,0.019165039,0.0052108765,0.03970337,-0.02079773,0.008338928,0.016555786,-0.030639648,-0.0048713684,-0.033294678,-0.028366089,-0.02053833,-0.005088806,-0.017074585,0.024368286,-0.014274597,0.009750366,-0.013061523,-0.018692017,0.044403076,0.017837524,-0.0049858093,0.025756836,0.011039734,0.018371582,0.044830322,0.00207901,-0.040649414,0.032104492,-0.01713562,-0.00472641,-0.013687134,0.031341553,0.019805908,-0.02909851,-0.01348114,-0.019226074,0.00023007393,-0.022064209,-0.016464233,0.0234375,0.028259277,0.012321472,-0.024383545,0.034576416,0.008918762,-0.030136108,-0.021636963,0.016036987,0.011817932,-0.045440674,0.0046577454,0.011878967,0.062561035,-0.022537231,0.002500534,0.02178955,0.041625977,0.031143188,0.0067825317,-0.0066375732,0.008583069,-0.017089844,0.010818481,0.006538391,-0.009506226,0.01789856,-0.0051460266,0.021514893,0.03491211,0.017730713,-0.015838623,-0.021224976,0.0037498474,-0.017089844,-0.025253296,0.038238525,0.009269714,0.027770996,-0.01524353,0.03579712,0.032287598,-0.036834717,-0.016723633,-0.013381958,0.04928589,-0.017623901,-0.008895874,0.035217285,0.004436493,0.019332886,-0.046936035,0.014892578,0.004131317,0.009757996,-0.020584106,-0.05810547,-0.04083252,0.002872467,0.029022217,0.001458168,0.02218628,0.028656006,0.0064926147,0.0031871796,0.029876709,-0.00005930662,-0.02607727,-0.014564514,-0.044677734,-0.021316528,-0.0044822693,-0.011291504,-0.027618408,0.023086548,-0.02684021,-0.028762817,-0.0001450777,-0.017242432,-0.00050497055,0.0022182465,0.009346008,0.032714844,0.0030841827,0.019500732,-0.017868042,-0.035339355,-0.009422302,0.01008606,0.0413208,-0.032562256,0.015960693,-0.004524231,0.004322052,-0.0054473877,0.011665344,0.018096924,0.018692017,0.010101318,0.034362793,-0.022247314,0.026672363,-0.027938843,0.0061149597,0.0012464523,-0.032836914,-0.023712158,-0.023254395,-0.02456665,0.036102295,-0.016525269,0.0016031265,-0.01939392,-0.023422241,-0.007820129,-0.04751587,0.037872314,0.029876709,0.0496521,-0.038604736,0.005962372,0.021118164,0.011131287,-0.00868988,0.0015525818,0.0028514862,0.026367188,0.029556274,0.00091362,-0.026947021,-0.015266418,-0.010940552,0.021697998,-0.049987793,-0.049041748,-0.0055618286,0.02330017,0.0025501251,-0.012130737,-0.04345703,-0.039642334,-0.0021858215,-0.036590576,0.026947021,0.0013933182,0.023208618,0.005836487,-0.033172607,-0.012245178,0.008544922,-0.030166626,0.034698486,-0.011398315,-0.014007568,-0.048675537,-0.009361267,0.023284912,0.015777588,0.0009498596,-0.026168823,0.0030708313,-0.022705078,-0.053497314,0.0026111603,0.0033473969,0.012825012,-0.0041122437,0.0028839111,-0.053527832,0.0013580322,-0.015586853,0.0087890625,0.023742676,0.021453857,0.006416321,-0.004753113,0.0012111664,-0.011383057,-0.01272583,-0.03527832,0.012680054,0.011039734,0.0072364807,0.025375366,0.03173828,0.00894165,-0.021484375,-0.006969452,0.002462387,0.01675415,-0.030395508,0.01991272,-0.007091522,0.011039734,-0.0065689087,-0.0118255615,-0.02017212,-0.005432129,0.066833496,-0.000767231,0.012573242,0.0020809174,-0.020614624,0.015014648,0.044006348,-0.043060303,0.0018634796,-0.0368042,0.032043457,-0.024124146,0.014793396,0.00111866,0.011131287,-0.021514893,-0.05999756,0.0035648346,0.017837524,0.005432129,-0.07910156,-0.02456665,-0.07397461,0.0039405823,-0.013015747,-0.026321411,0.0028438568,0.0037841797,-0.029312134,-0.06744385,0.012168884,0.051086426,0.011116028,0.021606445,-0.008323669,0.026260376,0.04144287,-0.009887695,-0.020614624,0.024642944,-0.017852783,-0.022216797,-0.030319214,0.039611816,-0.006565094,-0.00995636,0.00843811,0.03677368,0.026260376,-0.008522034,0.01928711,-0.007247925,0.014511108,-0.01121521,0.019104004,-0.008956909,-0.0057754517,0.036956787,-0.052825928,0.032470703,0.007881165,0.008964539,-0.00063943863,0.0154800415,0.028884888,-0.03366089,-0.009147644,0.025878906,0.021270752,0.03289795,-0.01737976,0.046295166,0.0158844,0.0066452026,-0.0034923553,-0.009666443,-0.020309448,-0.03338623,-0.045410156,0.033416748,0.021316528,0.009765625,0.000446558,-0.0031108856,0.011123657,-0.0016050339,-0.00020635128,-0.024795532,-0.014060974,0.00024676323,0.01322937,0.022476196,0.010192871,0.0073280334,0.017852783,0.032318115,0.0385437,0.011367798,-0.0078125,0.001824379,0.0287323,-0.00995636,0.0044822693,0.021102905,0.029449463,0.024139404,0.024383545,0.01626587,-0.044067383,-0.017364502,-0.008056641,0.0016021729,0.0034751892,-0.0105896,0.004085541,-0.010063171,0.0027637482,-0.0016536713,-0.046417236,-0.0039367676,-0.027023315,-0.021118164,-0.0178833,-0.0052604675,0.022827148,0.011482239,-0.009490967,0.006225586,-0.0009717941,0.052825928,-0.02015686,0.0051612854,0.030029297,0.03930664,0.017929077,-0.028045654,-0.01940918,-0.016159058,0.0037899017,0.013076782,-0.020874023,0.010650635,0.033172607,-0.0059776306,0.005180359,-0.009887695,0.028259277,-0.008041382,0.010940552,0.00040531158,0.011909485,-0.012573242,0.031204224,-0.045562744,0.01486969,0.019866943,-0.0037708282,0.009933472,-0.013626099,-0.028656006,0.02268982,0.004814148,-0.0012435913,0.03213501,-0.01550293,0.02748108,-0.044158936,-0.022521973,-0.00409317,-0.018493652,-0.035064697,0.022644043,-0.012832642,-0.0046691895,0.0048065186,-0.04348755,0.03567505,-0.037750244,0.009796143,0.00982666,0.007472992,-0.0087509155,-0.016418457,-0.0011339188,-0.019638062,-0.012672424,0.0039711,-0.0050582886,0.04815674,0.024353027,0.03265381,0.033691406,0.012519836,0.014389038,-0.029769897,-0.032806396,0.001367569,-0.015449524,0.008323669,-0.021606445,0.048431396,0.033843994,0.007335663,0.037475586,0.037078857,0.029159546,-0.01612854,0.00868988,-0.009513855,0.015602112,-0.028869629,0.023086548,0.0015182495,0.04425049,-0.031280518,0.014389038,0.0047073364,0.02848816,-0.02558899,0.016418457,0.06488037,0.0309906,0.0003452301,0.017959595,-0.018310547,-0.003824234,-0.019256592,-0.01928711,0.058746338,-0.012626648,0.053131104,0.04727173,0.0098724365,-0.005115509,0.026824951,-0.024978638,-0.01550293,0.058563232,0.022720337,-0.032226562,-0.005958557,-0.008071899,0.010910034,-0.042877197,-0.027511597,0.015960693,0.008300781,0.01197052,-0.0058059692,-0.0022621155,-0.015144348,0.0074806213,0.009178162,0.009559631,-0.0066871643,0.013938904,0.022079468,0.004245758,0.026443481,0.008323669,0.025100708,-0.029785156,-0.014846802,0.007987976,0.024002075,-0.009590149,0.004966736,0.024765015,0.022216797,0.046081543,0.041503906,-0.023727417,-0.010810852,0.017730713,0.010810852,-0.0040130615,0.05630493,0.033569336,0.008270264,0.031829834,0.028915405,0.031433105,-0.039978027,0.016189575,-0.003042221,0.011802673,-0.010757446,-0.025009155,0.015792847,0.0014915466,0.0098724365,0.0034618378,-0.0042800903,0.023757935,0.020446777,-0.01852417,0.016937256,0.002626419,0.028839111,-0.005130768,-0.0048561096,0.01020813,-0.0070762634,0.022079468,0.014045715,0.03479004,-0.028808594,0.0184021,0.0051116943,-0.01625061,0.011184692,0.003063202,-0.029922485,0.003282547,-0.0010614395,-0.008888245,-0.028335571,-0.0029067993,0.0146865845,-0.02192688,0.015586853,0.012870789,-0.014091492,-0.004184723,0.0287323,0.02557373,0.0005054474,-0.00091457367,-0.02772522,0.023330688,0.053863525,0.00957489,-0.010131836,-0.028625488,0.0034885406,0.018966675,-0.011238098,-0.007194519,0.010879517,-0.015411377,-0.006259918,0.024261475,0.02722168,0.02583313,0.031097412,-0.030822754,-0.009506226,0.0013666153,0.021331787,0.0034923553,0.00019645691,-0.003545761,0.026062012,-0.01737976,0.03930664,0.018966675,0.00422287,0.013183594,-0.02420044,-0.01424408,0.00894165,-0.028274536,0.024749756,-0.024459839,0.009605408,-0.006313324,0.030639648,-0.020217896,-0.04284668,0.011390686,-0.02180481,-0.018417358,-0.022140503,0.018234253,-0.0000066161156,0.023040771,0.02331543,0.02520752,-0.03149414,0.06298828,-0.018463135,0.06185913,-0.013076782,-0.0181427,0.051452637,0.030899048,0.043029785,0.0058555603,0.0024375916,-0.020614624,0.02822876,0.042144775,0.034179688,0.0057144165,0.00655365,-0.011413574,0.050872803,-0.011116028,0.03781128,-0.008270264,0.0011854172,0.009216309,-0.006877899,-0.012870789,0.0013084412,0.005241394,0.024307251,0.066467285,-0.017852783,-0.02015686,-0.019439697,-0.01096344,0.019485474,-0.013465881,0.011352539,-0.0041275024,-0.026062012,0.008110046,-0.03286743,-0.006362915,0.017211914,0.015014648,-0.05432129,-0.028076172,0.00447464,0.024139404,-0.031707764,0.028884888,0.022064209,-0.009384155,0.021606445,0.034057617,0.0072288513,0.03982544,-0.0051460266,0.022583008,0.044525146,0.008232117,0.0033683777,0.0035247803,0.015266418,-0.015991211,0.005760193,0.028884888,-0.00051021576,0.0055007935,0.022201538,-0.013580322,-0.0014257431,0.008758545,-0.0129852295,0.0030517578,-0.008399963,-0.004322052,0.00029873848,0.003200531,0.0036239624,0.0069389343,-0.008491516,-0.022644043,-0.0035114288,0.029876709,0.00932312,-0.039611816,0.00081062317,0.013832092,0.004764557,-0.017486572,-0.018692017,-0.011436462,-0.029876709,0.017333984,0.03842163,0.009292603,0.0067977905,-0.02949524,0.0006761551,0.040222168,0.02192688,0.011245728,0.0104904175,-0.0027713776,0.0022010803,-0.025054932,-0.0030288696,-0.00073337555,-0.0110321045,0.010322571,0.029891968,-0.0036582947,-0.01889038,0.018188477,0.0045814514,0.008232117,0.0032920837,-0.008300781,0.005935669,-0.011016846,-0.0015392303,-0.0021858215,0.0077056885,-0.016433716,-0.030715942,-0.027755737,0.027008057,0.05480957,-0.011619568,-0.00818634,0.014976501,0.01675415,0.02192688,0.035614014,0.013900757,0.044006348,0.022079468,0.0022792816,-0.025253296,0.014526367,-0.0033168793,-0.02532959,0.025054932,-0.013214111,-0.019104004,0.015792847,0.014091492,-0.0129852295,-0.024917603,-0.017318726,-0.012275696,-0.02017212,0.029418945,-0.0060157776,0.014007568,-0.046447754,-0.0067367554,0.021896362,-0.015052795,-0.039001465,-0.027267456,-0.006286621,-0.012336731,-0.06390381,0.009666443,-0.023635864,0.016677856,-0.030136108,0.013717651,-0.0059509277,0.019195557,-0.012573242,0.01058197,0.01449585,0.031829834,0.017669678,0.0042686462,0.019302368,-0.029022217,-0.020370483,0.0032482147,-0.0056114197,-0.010215759,0.021652222,-0.01146698,0.04446411,0.00983429,-0.011024475,-0.0021476746,-0.01272583,0.00856781,-0.013717651,-0.020446777,-0.021072388,0.017700195,0.020111084,-0.008834839,-0.0015621185,0.034057617,-0.022903442,-0.023529053,0.021026611,0.04550171,0.015586853,0.041534424,-0.010498047,0.0027484894,-0.027908325,0.0027542114,-0.008094788,0.020980835,0.006767273,0.0043792725,-0.005771637,-0.0034255981,0.011772156,-0.016921997,-0.005302429,0.02999878,0.009666443,-0.010864258,0.04006958,0.026504517,0.010215759,-0.020706177,-0.009140015,0.028778076,0.049102783,-0.0046195984,-0.0038337708,-0.00674057,0.007873535,0.0020980835,0.008544922,0.013069153,-0.017669678,-0.041046143,-0.019454956,-0.014099121,0.029708862,0.0006637573,0.011962891,-0.015701294,0.019714355,-0.005420685,-0.032684326,-0.0154953,0.033355713,-0.0066719055,-0.028442383,-0.0033836365,-0.013557434,0.020187378,-0.027938843,-0.010307312,-0.04611206,-0.026275635,-0.028121948,-0.017959595,0.032440186,0.012069702,-0.0037899017,0.004634857,-0.004714966,-0.018127441,0.0074424744,0.033966064,-0.0021362305,-0.0046310425,0.019882202,0.02973938,-0.014312744,0.017440796,0.0055999756,-0.005744934,0.009109497,-0.013183594,0.020324707,-0.018798828,0.024963379,0.012306213,-0.00083208084,0.02355957,0.004043579,0.026916504,-0.027145386,-0.012046814,-0.017623901,-0.0014629364,0.031829834,-0.019607544,-0.025466919,0.0018405914,-0.012809753,-0.028366089,-0.0028705597,0.021194458,0.023635864,-0.025131226,0.050933838,-0.026931763,-0.0065460205,0.008171082,0.008903503,-0.0155181885,0.0027999878,0.034484863,-0.0033111572,0.013809204,-0.0149383545,-0.015701294,-0.028656006,-0.012191772,0.010536194,-0.013572693,-0.011734009,0.011871338,0.006916046,0.037078857,0.0028648376,0.016906738,0.025512695,-0.0034561157,0.033111572,-0.0023212433,0.050231934,0.01953125,-0.02859497,-0.000269413,0.014671326,-0.022369385,-0.00013506413,-0.009132385,0.021652222,-0.035858154,0.0049743652,0.005874634,0.025115967,-0.015106201,-0.00034976006,-0.020126343,0.0014028549,-0.041412354,0.009246826,-0.04385376,0.019485474,0.038726807,0.008041382,0.02357483,-0.0077056885,-0.02204895,0.024978638,0.04940796,0.0031147003,-0.04083252,-0.0021781921,-0.0045280457,-0.011619568,-0.0039863586,0.019607544,-0.022125244,-0.019134521,-0.009117126,-0.019836426,0.001701355,-0.019012451,0.030532837,0.0008530617,0.01474762,-0.010856628,0.020446777,-0.0090408325,0.0067634583,0.0012712479,-0.017593384,0.031799316,0.029708862,-0.01600647,0.018722534,0.01890564,-0.028366089,0.042541504,-0.009841919,0.02192688,-0.01600647,0.009017944,-0.030395508,-0.011131287,-0.01689148,0.0068511963],"createdAt":"2026-04-18T18:42:25.873Z","updatedAt":"2026-04-23T06:04:03.964Z","lastSeenAt":"2026-04-23T06:04:03.964Z","tsv":"'/api':202 '/api/v1/ach/9':66,169 '/docs':201 '/pricing':203 '/readme':205 '/request':17,34,161 '0.02':16,33,77,160 '000':81 '20':80 '402':246 '6':87 'ACH API' 'Base network API' 'USDC API' 'accept':235 'access':44,72,179 'ach':185 'actual':258 'advertis':116 'ai':10,27,128 'analysi':132 'analyt':122 'api':4,21,40,71,104,120,178 'assess':257 'base':7,24,60,82 'behind':50,167 'beyond':174 'broader':114 'call':79 'categori':118 'challeng':247 'classif':135 'commit':110 'confirm':241 'connect':211 'content':217 'convers':152 'cost':74 'data':9,26,121,125 'decim':88 'descript':229 'detail':228 'difficult':255 'document':173,196,252 'embed':136 'endpoint':14,31,49,64,156,234,239 'estim':146 'exact':101 'exampl':225 'exchang':141 'export':126 'extrem':198 'feed':140 'financ':11,28,137 'financi':190 'four':117 'function':166,191,259 'gas':145 'gate':3,20,43 'generat':153 'generic':176 'geocod':150 'header':98 'howev':163 'http-post' 'infrastructur':148 'insight':127 'json-response' 'key':105 'label':180 'lack':250 'learn':130 'limit':107 'list':68,155 'live':242 'lowpaymentfee' 'lowpaymentfee.com':35 'machin':129 'made':91 'make':253 'marketplac':41 'may':182 'metric':123 'micropay':54 'micropayment API' 'network':61 'offer':8,25 'openapi':221 'page':206 'particular':233 'path':170 'pay-per-request API' 'payment':89,97,186 'per':52,78 'per-request':51 'per-request-micropayment' 'platform':5,22,115 'premium':70,177 'price':139,162 'process':187 'prompt':213 'protocol':39 'quot':144 'rate':106,142 'relat':183 'render':208 'report':124 'request':53 'request/response':224 'requir':112 'return':237,243 'schema':222 'scheme':102 'sentiment':131 'settl':55 'share':157 'similar':189 'spars':199 'specif':63,165 'specul':195 'substant':216 'summar':134 'text':133 'token':143 'unit':83 'upfront':109 'usdc':57,85 'usdc-base' 'util':13,30,149 'valid':151,245 'varieti':47 'via':92 'wallet':212 'web3':138 'x':96 'x-payment':95 'x402':2,19,38,94 'x402 API' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"ebee4706-3edb-49e7-9dc3-19518c76599a","listingId":"f351128e-b5f3-4af5-b7ff-3a2a56c79dc0","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/ach/9","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:25.873Z"}],"sources":[{"listingId":"f351128e-b5f3-4af5-b7ff-3a2a56c79dc0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/9","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:25.873Z","lastSeenAt":"2026-04-23T06:04:03.964Z"}],"details":{"listingId":"f351128e-b5f3-4af5-b7ff-3a2a56c79dc0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/9 \\\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 valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/ach/9"},{"claim":"All listed endpoints are priced at $0.02 per request with no API keys, rate limits, or minimums","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /api, /pricing, /README) render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium API functionality with per-call USDC micropayments on Base","Integrating pay-as-you-go API calls into agent workflows without API key management","Testing x402 protocol payment flows against a live endpoint"],"bestFor":["Developers experimenting with x402 micropayment protocol","Agents needing keyless, pay-per-call API access on Base","Projects that want to avoid subscription commitments for API usage"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume use cases where per-request pricing may add up compared to flat-rate plans","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:30.334Z"},"updatedAt":"2026-04-23T06:04:03.964Z"}}