{"id":"c1454f16-ef62-4741-a427-ad6d01d184c4","shortId":"kjnQRW","kind":"x402","title":"x402-gated API platform offering data, AI, finance, and utility endpoints at $0.02/request on Base.","tagline":"x402-gated API platform offering data, AI, finance, and utility endpoints at $0.02/request on Base.","description":"lowpaymentfee.com is an x402 protocol API marketplace that exposes a broad set of endpoints across four categories: 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 pay-per-call at $0.02 each, settled in USDC on the Base network with no API keys, no rate limits, and no minimum commitments.\n\nThe specific endpoint at `/api/v1/ach/67` is listed as \"Premium API Access\" and returns a valid x402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme to the payTo address. The endpoint accepts HTTP POST requests and returns application/json.\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 spec, no request/response schema documentation, and no usage examples available. The purpose of the `/api/v1/ach/67` path specifically is unclear; the \"ach\" segment might relate to ACH payment processing or could be an internal route identifier. Without documentation, the actual functionality behind this endpoint cannot be confirmed.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","http-post","json-response","no-api-key","no-rate-limit"],"categories":["api-marketplace","finance","ai","data"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","crypto-paid API","402 payment API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all render only 'Connect wallet'","No OpenAPI or schema definition found for any endpoint","The specific purpose of /api/v1/ach/67 ('Premium API Access') is undocumented and unclear — 'ach' may refer to ACH payment processing but this is unconfirmed","No example requests or responses available anywhere in crawled content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/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/ach/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, but documentation is effectively nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and the specific purpose of /api/v1/ach/67 is unclear. The listing is essentially a stub with confirmed liveness.","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":"2026-04-19T02:08:24.720Z","embedding":[-0.02571106,-0.05230713,0.04257202,0.015655518,0.02494812,-0.027954102,-0.008277893,0.029205322,0.047943115,-0.055023193,0.034301758,-0.061676025,-0.03262329,-0.030761719,-0.009605408,0.016830444,0.014656067,-0.005680084,-0.047210693,0.03152466,0.020111084,0.009048462,-0.0043907166,0.033935547,-0.0042915344,-0.036376953,0.0038585663,-0.009277344,-0.027862549,-0.059051514,0.008842468,-0.03488159,-0.009208679,0.026138306,-0.023345947,-0.015090942,-0.004196167,0.05267334,0.003522873,-0.008354187,0.0012540817,-0.042388916,0.029693604,-0.016952515,-0.03451538,-0.03149414,0.024246216,-0.01651001,-0.03326416,-0.024719238,-0.04159546,0.013542175,0.006214142,0.021743774,0.006095886,0.02281189,0.0029945374,-0.012054443,0.009994507,0.023757935,0.0256958,-0.052490234,-0.013031006,-0.010154724,0.021957397,0.05267334,-0.0013465881,0.051452637,0.019134521,0.06732178,0.032470703,0.052947998,0.036254883,-0.0015163422,-0.006706238,-0.023025513,-0.020446777,0.038909912,-0.0082092285,-0.012359619,-0.03387451,-0.018554688,-0.06536865,-0.033081055,0.0128479,-0.07342529,-0.027938843,0.013641357,-0.034973145,0.030349731,-0.06964111,0.0068855286,-0.014953613,0.0022621155,-0.004196167,0.0011415482,-0.018035889,0.0005912781,0.00086069107,0.0047912598,-0.014846802,-0.035491943,0.01777649,0.03189087,0.034301758,0.02545166,0.01398468,0.023284912,0.024154663,-0.012573242,-0.014221191,0.012504578,-0.033233643,-0.020645142,0.011489868,-0.008666992,-0.021026611,0.016098022,-0.0259552,0.0045051575,-0.05731201,0.040374756,0.025009155,-0.009597778,-0.002462387,-0.036346436,-0.008888245,0.004917145,-0.043914795,-0.019577026,0.03427124,0.009239197,0.014694214,-0.027755737,-0.03918457,-0.006801605,-0.027130127,-0.013999939,-0.043182373,-0.011390686,0.029037476,-0.02796936,0.031036377,0.030731201,-0.082336426,0.009773254,-0.026916504,0.01737976,-0.020370483,-0.0063705444,0.00022745132,0.03665161,-0.004234314,-0.024276733,-0.01953125,-0.028823853,-0.022705078,0.025222778,-0.0054397583,0.03024292,0.0013856888,0.011810303,0.016159058,-0.006626129,0.017578125,0.042785645,-0.018844604,-0.08502197,-0.06866455,-0.03262329,-0.014625549,-0.018127441,-0.0440979,-0.010406494,-0.018295288,-0.08190918,-0.033203125,-0.010307312,0.0030460358,-0.040527344,0.013282776,-0.030563354,0.0047950745,-0.0015659332,-0.045043945,-0.009315491,-0.03274536,0.045562744,0.022598267,0.019866943,0.01398468,0.0015964508,0.059509277,0.016479492,-0.014160156,-0.02368164,0.021316528,-0.017456055,0.05380249,-0.006702423,0.012275696,-0.014274597,0.040008545,0.05392456,0.001958847,-0.03805542,-0.00045466423,-0.042877197,-0.03427124,-0.026763916,0.0062561035,-0.006793976,-0.007129669,0.03488159,-0.02722168,-0.03225708,0.008277893,0.028625488,0.016159058,0.036102295,-0.014205933,-0.0003809929,0.009994507,0.040496826,-0.026779175,0.04244995,0.0181427,0.004688263,-0.008232117,-0.03265381,0.03741455,0.03427124,-0.049621582,-0.0005726814,-0.008659363,0.024597168,0.007911682,0.019851685,0.0068855286,0.0090789795,-0.026275635,-0.032318115,-0.0075683594,0.023788452,0.008560181,-0.030532837,-0.044952393,-0.055389404,0.046813965,0.05001831,0.034210205,0.012825012,0.004169464,-0.048034668,-0.025405884,-0.070007324,0.048309326,0.07550049,-0.0015268326,-0.011489868,0.034362793,0.01171875,-0.045532227,0.01927185,0.004924774,-0.011062622,-0.020584106,0.014884949,-0.045959473,0.010795593,0.009437561,0.032470703,0.0597229,-0.015960693,-0.049926758,-0.033447266,-0.020507812,0.006011963,-0.020187378,-0.005870819,0.0010089874,0.01751709,0.026306152,0.0061950684,0.030319214,-0.00080633163,0.020812988,-0.008781433,0.01878357,-0.013397217,-0.03765869,0.024475098,-0.0010843277,-0.07067871,0.010292053,-0.00655365,0.05999756,-0.05279541,0.044799805,-0.0060691833,0.01991272,0.05303955,-0.014709473,-0.043518066,0.0103302,0.0259552,0.023468018,0.03982544,0.02949524,-0.0017051697,0.020980835,0.070251465,-0.00818634,-0.0060806274,0.0049209595,0.013771057,0.024383545,0.012680054,-0.03265381,-0.026367188,-0.0047302246,-0.0362854,0.03503418,-0.024597168,0.03164673,0.003944397,0.004207611,-0.023406982,0.008361816,-0.040222168,0.017044067,-0.04598999,0.0048675537,-0.0010900497,-0.037872314,0.03253174,0.021850586,-0.012420654,0.02507019,0.046966553,0.023620605,-0.0073547363,-0.015594482,-0.017852783,-0.023483276,-0.019546509,0.02784729,0.018753052,0.025360107,0.04876709,-0.02192688,0.0025844574,0.022567749,0.022537231,0.023391724,0.007980347,-0.010902405,-0.06390381,-0.07598877,-0.013450623,-0.04373169,0.022964478,0.016647339,0.0039749146,0.05621338,-0.002105713,-0.00881958,-0.043670654,0.029449463,-0.060272217,-0.0061836243,0.02128601,-0.02986145,-0.042755127,0.00006818771,0.016052246,0.024291992,0.026641846,0.022399902,0.011817932,0.06506348,0.02696228,-0.0038375854,0.012390137,0.032073975,0.0012788773,0.0013027191,-0.0017776489,-0.041412354,-0.01687622,0.034210205,-0.006755829,-0.018539429,-0.066101074,0.064819336,0.029586792,0.06744385,-0.008583069,0.020858765,0.022766113,0.004020691,0.020233154,-0.019165039,-0.00894928,-0.02558899,-0.010719299,0.013313293,-0.016220093,-0.011810303,-0.019546509,0.030929565,-0.019470215,0.01134491,-0.03503418,0.038757324,-0.012916565,0.0009636879,0.01499939,0.013450623,0.045776367,0.048583984,-0.0637207,0.007007599,0.008956909,-0.018417358,0.0056114197,0.04522705,0.010353088,-0.008300781,-0.049072266,-0.02204895,-0.020904541,-0.015701294,-0.04208374,0.0017185211,0.019088745,0.021560669,0.017486572,0.0019292831,-0.030761719,-0.011375427,-0.01159668,-0.06542969,-0.0015678406,-0.055145264,0.010467529,0.04788208,-0.017364502,0.010314941,0.005832672,-0.010070801,-0.01939392,0.017318726,0.0027561188,0.03164673,-0.033935547,0.049865723,0.014228821,0.01991272,0.027114868,0.039611816,0.03111267,0.019851685,0.051940918,0.006362915,-0.016433716,-0.058135986,0.016204834,-0.05166626,0.0030059814,-0.0021648407,-0.020370483,0.009346008,-0.011650085,-0.03829956,-0.0181427,0.0032253265,-0.024765015,-0.0016832352,0.0041770935,-0.045684814,-0.03970337,-0.062072754,-0.02947998,-0.020355225,0.053588867,0.023468018,-0.005115509,-0.06896973,-0.009552002,0.017028809,0.006752014,0.009750366,-0.016174316,-0.0012168884,-0.0022773743,-0.022750854,-0.023849487,-0.013336182,0.045715332,0.0023059845,-0.016326904,0.016189575,0.01638794,0.0121536255,-0.012557983,-0.007041931,0.02243042,-0.028930664,-0.005428314,-0.024246216,0.017852783,0.004169464,-0.017059326,-0.04373169,0.04776001,0.009384155,0.045166016,-0.04006958,0.00018906593,-0.027420044,0.01600647,0.026321411,-0.0043907166,0.012802124,0.021102905,-0.045806885,-0.07788086,0.023513794,-0.01512146,0.032409668,0.028442383,0.01134491,0.03564453,-0.024475098,0.0062446594,0.015777588,-0.018249512,-0.012214661,-0.033233643,-0.030899048,-0.028320312,-0.011314392,-0.024673462,0.018966675,-0.015136719,0.013442993,-0.009757996,-0.022064209,0.025848389,0.0103302,-0.0010099411,0.01852417,0.014640808,0.009239197,0.04598999,-0.008117676,-0.041809082,0.035827637,-0.013916016,-0.009857178,-0.002292633,0.032836914,0.026611328,-0.02633667,-0.0060043335,-0.0101623535,0.0028190613,-0.027175903,-0.02041626,0.01763916,0.022064209,-0.006580353,-0.027069092,0.01612854,0.008682251,-0.036834717,-0.007286072,0.016296387,0.0317688,-0.048309326,0.0064468384,0.0045318604,0.05697632,-0.031036377,0.0037937164,0.0127334595,0.036224365,0.028961182,0.011062622,-0.0049972534,0.024963379,-0.0046691895,0.017059326,-0.004787445,-0.005355835,0.008163452,-0.01108551,0.014556885,0.027359009,0.0017652512,-0.005065918,-0.017730713,0.0067214966,-0.016647339,-0.03567505,0.03817749,0.0050086975,0.026062012,-0.011947632,0.035369873,0.02027893,-0.024536133,-0.01637268,-0.0049972534,0.048828125,-0.012039185,-0.00957489,0.02067566,0.009796143,0.020629883,-0.041992188,0.012893677,0.008308411,0.007144928,-0.017120361,-0.08062744,-0.037597656,-0.003036499,0.04055786,-0.0050697327,0.015914917,0.01763916,0.0035133362,0.004711151,0.019592285,-0.0031261444,-0.035186768,-0.01625061,-0.030929565,-0.0018882751,0.0076675415,-0.0007162094,-0.030410767,0.025375366,-0.024124146,-0.026809692,0.003042221,-0.0234375,-0.005092621,-0.008628845,0.0065841675,0.025497437,-0.0020008087,0.022232056,-0.022201538,-0.041931152,-0.01524353,0.019515991,0.046875,-0.032165527,0.01260376,-0.003944397,-0.0017337799,-0.004802704,0.010383606,0.016342163,0.024276733,0.002374649,0.033203125,-0.032562256,0.034423828,-0.012504578,0.01927185,0.0029773712,-0.043151855,-0.024307251,-0.018554688,-0.019058228,0.021881104,-0.006931305,-0.0076560974,-0.021972656,-0.01977539,-0.0050735474,-0.05532837,0.0395813,0.021575928,0.047027588,-0.03213501,0.002439499,0.0236969,0.012130737,-0.0031471252,0.0025157928,0.010383606,0.028411865,0.038909912,-0.0030918121,-0.038482666,-0.01725769,-0.013687134,0.006023407,-0.061401367,-0.062805176,-0.010826111,0.030975342,-0.0034866333,-0.0029659271,-0.024536133,-0.03857422,-0.0077171326,-0.0413208,0.026885986,-0.012527466,0.028411865,0.011428833,-0.037109375,-0.016479492,0.006134033,-0.024276733,0.035247803,0.0034999847,-0.010536194,-0.038330078,-0.011764526,0.015586853,0.019439697,0.005432129,-0.016952515,0.00724411,-0.023040771,-0.047546387,0.007587433,0.009002686,0.016082764,-0.0046081543,0.0038414001,-0.04727173,-0.0024089813,-0.016098022,0.0035896301,0.018188477,0.010177612,0.0018930435,0.0064849854,-0.0027446747,-0.011009216,-0.0027313232,-0.033935547,0.008430481,0.011947632,0.01727295,0.021636963,0.04046631,-0.0045547485,-0.01927185,-0.0009484291,-0.0038928986,0.010269165,-0.028656006,0.012992859,-0.011428833,0.015136719,-0.010757446,-0.004470825,-0.01802063,-0.008415222,0.06262207,-0.0049324036,0.000033140182,0.00066661835,-0.01574707,0.010299683,0.034240723,-0.05593872,0.003162384,-0.029418945,0.024887085,-0.018234253,0.010879517,0.004798889,0.0054855347,-0.022140503,-0.058898926,0.009048462,0.020492554,-0.00182724,-0.07208252,-0.024810791,-0.06958008,0.005214691,-0.004360199,-0.028060913,0.011009216,0.012466431,-0.030593872,-0.07537842,0.010917664,0.055847168,0.0031661987,0.01524353,-0.0026435852,0.019729614,0.04244995,-0.014297485,-0.008956909,0.025115967,-0.011077881,-0.020004272,-0.035461426,0.04574585,0.002286911,-0.0155181885,-0.0016326904,0.023422241,0.015625,0.0031642914,0.018554688,0.006336212,0.020141602,-0.018157959,0.024841309,-0.015205383,-0.017196655,0.039886475,-0.06524658,0.03253174,0.00881958,0.001241684,-0.003452301,0.017929077,0.030532837,-0.037200928,-0.020706177,0.03125,0.013183594,0.028244019,-0.022857666,0.048828125,0.013648987,0.013496399,-0.006248474,-0.020507812,-0.017791748,-0.03289795,-0.03778076,0.04031372,0.018157959,0.0046195984,-0.000012278557,-0.0020751953,0.01576233,0.003112793,-0.014587402,-0.021377563,-0.029388428,0.00409317,0.019195557,0.019836426,0.007457733,0.007633209,0.020370483,0.03253174,0.048706055,0.015449524,-0.004589081,0.0039901733,0.017333984,-0.016601562,0.008758545,0.023773193,0.03527832,0.016311646,0.020904541,0.01259613,-0.05117798,-0.015037537,-0.004901886,-0.010665894,0.010276794,-0.0096588135,-0.0040016174,-0.016448975,-0.0011615753,-0.006729126,-0.04647827,-0.0030612946,-0.019210815,-0.025299072,-0.015838623,-0.00043201447,0.020080566,0.0070343018,-0.015716553,-0.00041866302,0.0031795502,0.04748535,0.0026454926,-0.0002270937,0.03866577,0.048858643,0.009841919,-0.015625,-0.0234375,-0.01625061,0.010871887,0.0056991577,-0.02279663,0.003332138,0.02772522,-0.016220093,0.010383606,-0.026733398,0.037200928,-0.006664276,0.003364563,0.0056419373,0.01474762,-0.011306763,0.03756714,-0.04864502,0.0099487305,0.022109985,-0.009437561,-0.007217407,-0.01852417,-0.03366089,0.026504517,0.00497818,0.010971069,0.024429321,-0.010528564,0.013656616,-0.040649414,-0.010719299,-0.013320923,-0.02243042,-0.020095825,0.02128601,-0.03286743,-0.01663208,0.012451172,-0.035614014,0.047332764,-0.035888672,-0.0008034706,-0.0024108887,0.006881714,-0.016052246,-0.015380859,-0.000024437904,-0.00869751,-0.020645142,0.0070762634,-0.0018024445,0.039398193,0.024536133,0.039093018,0.030792236,0.010498047,0.026260376,-0.03491211,-0.035858154,0.0033073425,-0.01713562,0.011878967,-0.019515991,0.049987793,0.026763916,0.0055503845,0.032958984,0.024414062,0.019927979,-0.015396118,0.022857666,-0.00006502867,0.0039863586,-0.03286743,0.017532349,-0.0037460327,0.049957275,-0.023849487,0.00087833405,0.002702713,0.02935791,-0.030380249,0.018356323,0.06530762,0.037506104,0.007457733,0.032806396,-0.012458801,-0.012390137,-0.0069999695,-0.03111267,0.048797607,0.000039935112,0.042907715,0.05014038,0.0149002075,-0.004436493,0.042663574,-0.030014038,-0.019729614,0.043151855,0.022201538,-0.02357483,-0.00982666,-0.0047721863,0.020950317,-0.038146973,-0.029907227,0.018661499,0.0027046204,0.0027427673,-0.0065193176,0.0028305054,-0.012336731,-0.004245758,0.008262634,0.007537842,-0.017303467,0.020812988,0.025497437,0.013092041,0.037994385,0.024353027,0.022201538,-0.030075073,-0.01058197,0.008834839,0.023635864,-0.0051612854,0.0022735596,0.022705078,0.018692017,0.04272461,0.04888916,-0.020187378,-0.009727478,0.015419006,0.012268066,-0.013069153,0.052642822,0.030838013,0.015449524,0.023895264,0.027542114,0.034606934,-0.049316406,0.018051147,0.00089883804,0.014038086,-0.014480591,-0.029067993,0.021118164,-0.006290436,0.026763916,0.007987976,0.00048065186,0.017364502,0.024475098,-0.013252258,0.010658264,-0.0011558533,0.022384644,-0.011520386,-0.0079422,0.015853882,-0.01084137,0.023468018,0.010307312,0.045684814,-0.032104492,0.0071144104,0.0013303757,-0.012672424,0.005519867,0.012245178,-0.04144287,0.003932953,-0.0007638931,-0.0038967133,-0.025512695,-0.0019273758,0.019226074,-0.0124053955,0.011253357,0.0011253357,-0.014884949,0.00025725365,0.028625488,0.02368164,-0.005970001,-0.013412476,-0.019836426,0.019241333,0.0463562,0.004585266,-0.0067329407,-0.020828247,-0.0010204315,0.013542175,-0.009277344,0.005645752,0.0027561188,-0.008560181,-0.0030097961,0.026367188,0.031585693,0.025146484,0.028137207,-0.029388428,-0.010787964,-0.0034103394,0.023345947,-0.0042648315,0.009185791,-0.019378662,0.032470703,-0.016586304,0.0335083,0.028320312,0.0032367706,0.023345947,-0.02470398,-0.0015869141,0.0077781677,-0.030319214,0.02796936,-0.024246216,0.0018558502,-0.01084137,0.032104492,-0.018798828,-0.03564453,0.006126404,-0.026382446,-0.019485474,-0.019226074,0.016601562,0.0017385483,0.01852417,0.026229858,0.025161743,-0.024810791,0.06726074,-0.012283325,0.053527832,-0.018844604,-0.014640808,0.036102295,0.025970459,0.042541504,0.0046691895,0.0044555664,-0.02897644,0.023635864,0.032196045,0.034301758,-0.0002579689,0.010879517,-0.007534027,0.044403076,-0.011306763,0.03756714,-0.008003235,0.0036087036,0.014602661,-0.004463196,-0.016464233,0.007232666,0.004840851,0.019165039,0.053955078,-0.022644043,-0.009735107,-0.017608643,-0.016662598,0.02015686,-0.0066184998,-0.00003349781,-0.01940918,-0.03237915,0.0024223328,-0.02519226,-0.0047683716,0.025726318,0.0060539246,-0.040405273,-0.024795532,0.005924225,0.036865234,-0.033721924,0.022476196,0.034423828,-0.018966675,0.020690918,0.044769287,0.0031604767,0.026885986,-0.010559082,0.022323608,0.052825928,0.0035514832,-0.0063438416,0.011512756,0.019592285,-0.022903442,0.0053520203,0.025253296,-0.0064735413,-0.013137817,0.027511597,-0.03527832,-0.0025081635,0.0045814514,-0.008964539,0.0030784607,-0.0063095093,-0.011047363,-0.0035171509,0.0099487305,0.006690979,0.0014591217,-0.002336502,-0.017730713,-0.012710571,0.035705566,0.016311646,-0.03186035,-0.008666992,0.008071899,0.018951416,-0.016616821,-0.009170532,-0.0024356842,-0.030151367,0.014465332,0.024017334,0.0016536713,0.008415222,-0.030944824,0.001830101,0.044799805,0.013832092,0.009346008,0.014656067,0.0034656525,-0.000091314316,-0.027954102,-0.0035305023,-0.0018844604,-0.009361267,0.010513306,0.03152466,-0.007381439,-0.02128601,0.025680542,0.003276825,0.004043579,-0.004737854,-0.00894165,0.022842407,-0.0057144165,0.00019073486,-0.007949829,0.005645752,-0.01361084,-0.03717041,-0.01838684,0.03062439,0.050598145,-0.00063562393,-0.007972717,0.026046753,0.026306152,0.019302368,0.042388916,0.020385742,0.045776367,0.019424438,-0.008514404,-0.024261475,0.011955261,0.014625549,-0.03729248,0.027038574,-0.005252838,-0.013710022,0.020507812,0.0121536255,-0.0065612793,-0.021942139,-0.030014038,-0.016296387,-0.029663086,0.025939941,-0.0030536652,0.014083862,-0.043395996,-0.0070877075,0.020523071,-0.010169983,-0.036010742,-0.023223877,0.008621216,-0.018356323,-0.063964844,0.010620117,-0.02796936,0.01474762,-0.013801575,0.014137268,-0.012374878,0.01763916,-0.010040283,0.012718201,0.015571594,0.022613525,0.014915466,0.01121521,0.014480591,-0.029830933,-0.020111084,-0.0066375732,0.0008530617,-0.011878967,0.0211792,-0.009628296,0.034973145,0.013893127,-0.005443573,-0.0012149811,-0.013938904,0.0090789795,-0.005027771,-0.030349731,-0.012435913,0.027542114,0.0287323,-0.014015198,-0.0041122437,0.0357666,-0.021438599,-0.01777649,0.027618408,0.055267334,0.011077881,0.035980225,-0.012161255,0.008102417,-0.031921387,-0.00037574768,-0.013908386,0.0104904175,0.0061035156,0.009284973,-0.004459381,0.010681152,0.0087890625,-0.016830444,-0.0032310486,0.03237915,0.0071907043,-0.01272583,0.038116455,0.02444458,0.008621216,-0.02684021,-0.0074501038,0.027816772,0.034240723,-0.0025367737,-0.013046265,-0.010772705,0.005256653,0.0079574585,0.010910034,0.020584106,-0.025802612,-0.035491943,-0.010971069,-0.012374878,0.035186768,0.008056641,0.013290405,-0.015090942,0.016571045,-0.0067596436,-0.032684326,-0.016784668,0.021102905,0.001203537,-0.019058228,0.0067863464,-0.008735657,0.016693115,-0.023757935,-0.015396118,-0.03945923,-0.021530151,-0.03503418,-0.020370483,0.02619934,0.021331787,-0.009002686,0.0042381287,-0.0060043335,-0.026123047,0.013824463,0.014450073,-0.0074157715,-0.005493164,0.026763916,0.026367188,-0.018157959,0.019622803,-0.008163452,0.00022125244,0.0068893433,-0.011886597,0.024810791,-0.017807007,0.019760132,0.0027008057,-0.009819031,0.026473999,-0.0057868958,0.023345947,-0.024719238,-0.0060043335,-0.022888184,0.0025539398,0.03048706,-0.007911682,-0.027145386,-0.0025615692,-0.014556885,-0.022232056,-0.017089844,0.022262573,0.019226074,-0.005783081,0.05960083,-0.034942627,-0.018218994,-0.0016889572,0.009315491,-0.010444641,0.0022239685,0.041778564,-0.0024528503,0.0135650635,-0.009773254,-0.009216309,-0.043670654,-0.010292053,0.020339966,-0.004207611,-0.009757996,0.011444092,0.0048332214,0.040374756,-0.0053710938,0.014503479,0.033843994,-0.011520386,0.02519226,0.0076293945,0.03604126,0.01461792,-0.029418945,0.0013246536,0.0090789795,-0.036193848,-0.0036907196,-0.010185242,0.021453857,-0.047912598,0.016555786,0.0025672913,0.022109985,-0.01676941,-0.0052375793,-0.022232056,0.0023345947,-0.029937744,0.014053345,-0.03640747,0.016708374,0.04067993,0.006248474,0.035308838,0.0019359589,-0.026672363,0.024765015,0.04348755,0.009536743,-0.03048706,-0.011962891,0.012763977,-0.01197052,0.008758545,0.022491455,-0.02041626,-0.029342651,-0.017807007,-0.022232056,0.0033683777,-0.023910522,0.028320312,0.0084991455,0.010223389,-0.007797241,0.03451538,-0.0038490295,0.009902954,0.015350342,0.00058317184,0.035491943,0.025238037,-0.021896362,0.01876831,0.02532959,-0.033935547,0.038757324,-0.011779785,0.016204834,-0.019470215,0.01159668,-0.032958984,-0.018798828,-0.016296387,0.0042533875],"createdAt":"2026-04-18T18:42:18.669Z","updatedAt":"2026-04-22T18:31:17.926Z","lastSeenAt":"2026-04-22T18:31:17.926Z","tsv":"'/api':179 '/api/v1/ach/67':117,212 '/docs':177 '/pricing':178 '/readme':181 '/request':15,32 '0.02':14,31,93,145 '000':134 '0x8335':139 '20':133 '2913':140 '402 payment API' '6':149 'Base network API' 'USDC micropayment API' 'accept':165 'access':123 'ach':218,223 'across':49 'actual':236 'address':162 'ai':8,25,59 'analysi':63 'analyt':53 'api':4,21,40,104,122 'application/json':171 'avail':207 'base':17,34,100,135,142 'base-network' 'behind':238 'broad':45 'call':91 'cannot':241 'categori':51 'challeng':129 'classif':66 'commit':112 'confirm':243 'connect':187 'content':193 'convers':83 'could':227 'crypto-paid API' 'data':7,24,52,56 'decim':150 'document':172,202,234 'embed':67 'endpoint':12,29,48,86,115,164,240 'equal':144 'estim':77 'exact':157 'exampl':206 'exchang':72 'export':57 'expos':43 'extrem':174 'feed':71 'financ':9,26,68 'four':50 'function':237 'gas':76 'gate':3,20 'generat':84 'geocod':81 'given':146 'http':166 'http-post' 'identifi':232 'infrastructur':79 'insight':58 'intern':230 'json-response' 'key':105 'learn':61 'limit':108 'list':119 'lowpaymentfee' 'lowpaymentfee.com':35 'machin':60 'made':153 'marketplac':41 'metric':54 'might':220 'minimum':111 'network':101 'no-api-key' 'no-rate-limit' 'offer':6,23 'openapi':197 'page':182 'path':213 'pay':89 'pay-per-cal':88 'pay-per-call API' 'pay-per-request' 'payment':151,224 'payto':161 'per':90 'platform':5,22 'post':167 'premium':121 'price':70 'process':225 'prompt':189 'protocol':39 'purpos':209 'quot':75 'rate':73,107 'relat':221 'render':184 'report':55 'request':130,168 'request/response':200 'return':125,170 'rout':231 'schema':201 'scheme':158 'segment':219 'sentiment':62 'set':46 'settl':95 'spars':175 'spec':198 'specif':114,214 'summar':65 'text':64 'token':74 'unclear':216 'unit':136 'usag':205 'usdc':97,138,147 'usdc-settlement' 'util':11,28,80 'valid':82,127 'via':154 'wallet':188 'web3':69 'without':233 'x402':2,19,38,128,156 'x402 API' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"383cb5c2-0a4d-4a50-ae2f-46b4b14c1811","listingId":"c1454f16-ef62-4741-a427-ad6d01d184c4","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/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":"2026-04-18T18:42:18.669Z"}],"sources":[{"listingId":"c1454f16-ef62-4741-a427-ad6d01d184c4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/67","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:18.669Z","lastSeenAt":"2026-04-22T18:31:17.926Z"}],"details":{"listingId":"c1454f16-ef62-4741-a427-ad6d01d184c4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/67 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"All endpoints 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":"x402 challenge returns maxAmountRequired of 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/ach/67"},{"claim":"Available API categories include Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing data analytics and reporting endpoints without subscription commitments","Running AI inference tasks (sentiment, summarization, classification, embeddings) on a per-call basis","Fetching real-time financial data such as exchange rates, token quotes, and gas estimates","Using utility services like geocoding, validation, and data conversion"],"bestFor":["Developers wanting pay-per-use API access without API key management","Agents and bots that can settle payments in USDC on Base via x402","Projects needing low-cost, commitment-free access to diverse API categories"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","Applications requiring non-crypto payment methods","High-volume use cases where subscription pricing would be more economical"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:30.713Z"},"updatedAt":"2026-04-22T18:31:17.926Z"}}