{"id":"07309359-c9fa-4747-9d00-45ccef684c15","shortId":"A3YGFs","kind":"x402","title":"x402-gated premium API access endpoint on Base network, pay-per-request with USDC.","tagline":"x402-gated premium API access endpoint on Base network, pay-per-request with USDC.","description":"The `/api/v1/users` endpoint at lowpaymentfee.com is an x402-enabled API that requires per-request payment in USDC on the Base network. It is part of a broader platform offering multiple API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all gated behind x402 payment challenges.\n\nThis specific endpoint is labeled \"Premium API Access\" and accepts HTTP POST requests. The x402 challenge specifies a maximum payment of 20,000 units of USDC (token contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base), with a timeout of 300 seconds. The platform advertises a flat rate of $0.02 per request across its endpoints, no API keys, no rate limits, and instant access.\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/users` endpoint actually returns or what input it expects. The endpoint is confirmed live (402 challenge captured), but the lack of documentation makes it difficult to determine the actual functionality beyond the generic \"Premium API Access\" label.","tags":[],"capabilities":["x402-payment-gating","usdc-payment","base-network","http-post","per-request-billing","no-api-key-required"],"categories":["api","web3"],"synonyms":["premium API","pay-per-request API","x402 API","USDC gated endpoint","Base network API","lowpaymentfee","users endpoint"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or input/output schema provided; it is unknown what data /api/v1/users returns or what POST body it expects.","The endpoint name 'Premium API Access' is generic and does not describe actual functionality.","maxAmountRequired of 20000 USDC units — actual dollar cost is unclear without knowing token decimals context (likely $0.02 based on site pricing, but unconfirmed for this specific endpoint)."],"endpointUrl":"https://lowpaymentfee.com/api/v1/users","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/users","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 challenge, but there is essentially no documentation: no OpenAPI schema, no request/response examples, no description of what the /api/v1/users endpoint actually does. Docs pages are empty beyond a wallet connect prompt. 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":"2026-04-18T19:46:35.662Z","embedding":[-0.012863159,-0.0088272095,0.03817749,0.018127441,0.024642944,-0.030838013,-0.019302368,0.03842163,0.07110596,-0.062408447,0.035827637,-0.049835205,-0.03756714,-0.04055786,-0.025878906,-0.0099487305,-0.015457153,0.015106201,-0.047668457,0.04815674,0.04815674,-0.011154175,-0.005241394,0.042297363,0.00027656555,0.00894165,-0.010894775,0.0071411133,-0.018508911,-0.006778717,0.015159607,-0.023773193,0.0034675598,0.028121948,-0.0072135925,-0.0014801025,0.01486969,0.061706543,0.04260254,0.00076055527,-0.0054626465,-0.06585693,-0.0063323975,-0.014846802,-0.054595947,0.004306793,0.0057144165,-0.014389038,-0.017059326,0.008255005,-0.031555176,0.00050258636,-0.009895325,-0.0062026978,0.017318726,0.0067825317,0.0005311966,-0.015388489,-0.00995636,0.012367249,-0.007537842,-0.06951904,-0.009605408,0.00055265427,0.02229309,0.029876709,-0.0022888184,0.043060303,0.018707275,0.05239868,0.043151855,0.042877197,0.029373169,0.03503418,-0.0034828186,-0.013397217,-0.0025310516,0.048431396,-0.019317627,-0.01663208,-0.0134887695,-0.0016355515,-0.055358887,-0.01939392,-0.027572632,-0.038024902,-0.031143188,0.013252258,-0.019302368,0.017333984,-0.054748535,0.0134887695,-0.021453857,0.023391724,-0.016906738,-0.0031604767,-0.014373779,0.011665344,-0.0016059875,0.015037537,0.011604309,-0.041748047,0.02243042,-0.0015296936,0.054626465,0.021911621,0.008369446,0.03488159,-0.0071868896,-0.036346436,-0.0107421875,0.009239197,-0.008728027,-0.0105896,0.023757935,0.0011949539,-0.014350891,0.0016813278,0.005645752,0.026000977,-0.056030273,0.050231934,0.021255493,-0.028717041,0.010665894,-0.03250122,-0.003435135,-0.003768921,-0.045135498,-0.003107071,0.028152466,-0.009185791,0.024169922,-0.034057617,-0.018051147,0.020019531,-0.027679443,-0.020584106,-0.047851562,-0.007232666,0.023727417,-0.017715454,0.011657715,0.029891968,-0.09893799,-0.016738892,-0.04714966,0.028640747,-0.0524292,-0.009849548,-0.0132751465,0.022583008,-0.007358551,-0.022857666,-0.020568848,-0.023605347,-0.006008148,0.041107178,-0.006385803,0.036193848,0.012176514,0.00472641,0.025787354,0.008811951,0.016952515,0.03289795,0.003704071,-0.07501221,-0.07977295,-0.033203125,0.008476257,-0.015220642,-0.052337646,-0.011672974,0.0085372925,-0.07336426,-0.04458618,-0.0077667236,-0.009803772,-0.050109863,-0.009231567,-0.021347046,0.004787445,-0.011123657,-0.07977295,-0.044158936,-0.024108887,0.04748535,0.00932312,-0.008140564,0.017028809,-0.0016679764,0.04159546,0.0052757263,-0.029769897,-0.043823242,0.017532349,-0.034454346,0.032592773,0.011550903,0.018157959,-0.032165527,0.008560181,0.040771484,0.030960083,-0.016494751,0.005092621,-0.041137695,-0.054016113,-0.043395996,-0.0037002563,0.012527466,-0.01058197,0.030319214,-0.015808105,-0.025939941,0.0012950897,-0.00869751,0.028442383,0.056396484,-0.0006136894,0.004989624,0.00881958,0.014404297,-0.031311035,0.046081543,0.0357666,0.022262573,-0.035583496,-0.020370483,0.001739502,0.038635254,-0.039215088,-0.01625061,-0.012992859,0.015853882,0.009376526,0.0062065125,0.026321411,-0.015701294,-0.031021118,-0.04446411,-0.0011234283,0.034698486,0.01828003,-0.033203125,-0.049835205,-0.06903076,0.03250122,0.070129395,0.038604736,0.0045547485,0.020065308,-0.017532349,-0.009269714,-0.053497314,0.04159546,0.061523438,-0.027130127,-0.022644043,0.02507019,-0.021392822,-0.011955261,-0.013252258,-0.014129639,-0.01600647,-0.023910522,0.0036010742,-0.044525146,0.0019760132,0.011276245,0.0357666,0.031463623,-0.0042800903,-0.051239014,-0.030700684,0.017288208,0.01335907,-0.038879395,-0.0022563934,-0.0015935898,0.024642944,0.034454346,0.004600525,0.024368286,0.0025367737,0.01574707,-0.023788452,-0.018676758,-0.0076828003,-0.025268555,0.02029419,-0.010627747,-0.05859375,0.01626587,0.004463196,0.0690918,-0.050079346,0.03866577,-0.009971619,0.00907135,0.0440979,-0.034179688,-0.057647705,-0.0015821457,0.012123108,0.050842285,0.040924072,-0.0016098022,-0.005836487,-0.020187378,0.035064697,-0.008514404,0.012527466,0.005645752,0.023605347,0.04071045,0.0053596497,-0.06677246,-0.026687622,-0.024765015,-0.029342651,0.02381897,-0.018615723,0.027236938,-0.008430481,0.021881104,-0.033325195,-0.008171082,-0.047454834,0.013252258,-0.017501831,-0.014579773,-0.033813477,-0.018066406,0.01158905,0.03253174,-0.0067367554,0.00806427,0.02116394,0.02645874,-0.017044067,-0.03466797,-0.010154724,-0.0262146,0.014503479,0.009780884,0.026260376,0.008636475,0.042816162,-0.043182373,0.0138549805,0.03488159,0.022399902,0.027938843,-0.020370483,0.022659302,-0.055877686,-0.060150146,-0.009162903,-0.052581787,0.029525757,-0.0015439987,0.00021135807,0.045196533,-0.003200531,-0.0030956268,-0.03540039,0.04196167,-0.04437256,-0.016113281,0.035491943,-0.0104599,-0.013465881,0.006565094,0.02204895,0.01928711,0.009994507,0.022155762,0.019866943,0.067993164,0.054229736,0.013450623,0.018096924,0.0056419373,0.030136108,-0.026550293,-0.024017334,-0.032928467,-0.025405884,0.020248413,-0.02507019,0.00061798096,-0.07287598,0.061920166,0.014480591,0.086120605,0.01689148,0.012252808,0.027862549,-0.006881714,0.012916565,-0.032684326,-0.023651123,-0.02330017,-0.040039062,0.02104187,-0.007129669,-0.00774765,-0.028121948,0.024368286,0.022064209,0.006164551,-0.046783447,0.06665039,-0.0049438477,-0.006713867,0.024032593,0.00868988,0.059631348,0.042053223,-0.05441284,0.020202637,0.024642944,-0.016098022,-0.0013465881,0.034973145,-0.021255493,-0.018417358,-0.062072754,-0.025009155,-0.0056877136,-0.010505676,-0.054779053,-0.005428314,0.016464233,0.035095215,0.012176514,-0.024368286,-0.032806396,0.013893127,-0.026397705,-0.05343628,-0.014282227,-0.035980225,0.015808105,0.035186768,-0.022628784,-0.0068359375,0.013450623,-0.005115509,0.001455307,0.015823364,-0.017440796,-0.010414124,-0.049743652,0.0021915436,0.018753052,0.008026123,0.022247314,0.031677246,0.019638062,0.00072050095,0.036865234,0.038604736,-0.019485474,-0.042419434,0.01789856,-0.042022705,0.00969696,0.012062073,-0.0206604,-0.0055007935,-0.009994507,-0.026870728,-0.026153564,0.014312744,-0.020690918,0.0184021,0.026901245,-0.03930664,-0.026382446,-0.056549072,-0.01939392,0.014831543,0.066345215,0.050872803,-0.012275696,-0.058532715,-0.0062026978,0.021774292,0.0015287399,0.01701355,-0.014595032,-0.013145447,-0.02822876,-0.029037476,-0.0435791,-0.020874023,0.03164673,-0.008926392,-0.0057640076,0.017349243,-0.010421753,0.005622864,0.0014276505,-0.009239197,0.034820557,-0.017425537,-0.0041885376,-0.053588867,0.035980225,0.0055351257,-0.014099121,-0.061920166,0.052825928,0.009613037,0.029037476,-0.03640747,0.013542175,0.0003042221,0.012245178,0.003112793,-0.017059326,-0.011138916,0.024993896,-0.04360962,-0.09466553,0.04916382,-0.00036263466,0.009681702,0.0005478859,0.005683899,0.033477783,-0.006427765,-0.01977539,0.018875122,-0.039367676,0.001156807,-0.038604736,-0.049926758,-0.020996094,0.010520935,-0.012496948,0.013374329,-0.010002136,0.000024795532,-0.010231018,-0.016174316,0.025222778,-0.0007882118,0.00048971176,0.02848816,0.0068359375,0.013427734,0.030029297,0.0007753372,-0.033081055,0.008308411,-0.005470276,-0.006893158,-0.0030212402,0.04815674,0.00969696,-0.018249512,-0.0037136078,-0.005634308,-0.0178833,-0.019622803,-0.0075531006,0.006511688,0.050445557,0.005332947,-0.04864502,0.041290283,0.016174316,-0.031311035,-0.0012016296,0.021347046,0.03604126,-0.036865234,0.016723633,0.016815186,0.06439209,-0.038635254,-0.01209259,0.0015745163,0.024032593,0.0121536255,0.022384644,-0.026397705,-0.0046844482,-0.012290955,0.0078125,-0.00001579523,-0.01486969,-0.002248764,-0.0118637085,0.021942139,0.027450562,0.018341064,-0.033569336,-0.014755249,0.0005249977,-0.004940033,-0.006706238,0.015853882,0.019180298,0.017303467,-0.021255493,0.03564453,0.012046814,-0.05267334,-0.013427734,0.0027980804,0.048309326,-0.019836426,-0.005958557,0.010108948,0.0073890686,0.03036499,-0.051208496,-0.005268097,0.02305603,0.016204834,-0.005443573,-0.056915283,-0.036499023,-0.0064811707,0.03765869,0.008674622,0.0012178421,0.030227661,0.00080251694,0.008354187,0.011245728,-0.0068244934,-0.002960205,-0.029525757,-0.04586792,-0.0046539307,0.0062713623,-0.0033817291,-0.005634308,0.0013046265,-0.021530151,-0.037597656,-0.0014266968,-0.02420044,0.0071792603,-0.014312744,0.011459351,0.03466797,-0.00774765,0.00687027,-0.009796143,-0.02583313,0.010269165,0.01209259,0.025802612,-0.035247803,0.033996582,-0.0155181885,-0.0022735596,-0.018356323,0.014228821,0.013908386,0.017929077,-0.00058841705,0.04083252,-0.04864502,0.033813477,-0.031173706,-0.00919342,0.0135269165,-0.040100098,-0.0090789795,-0.035705566,-0.026382446,0.024719238,-0.020721436,0.006664276,-0.02319336,-0.02368164,-0.011566162,-0.046691895,0.024032593,0.023590088,0.033813477,-0.04714966,0.00091457367,-0.001745224,0.011413574,-0.005680084,0.0012359619,-0.024917603,0.03250122,0.021362305,0.0016174316,-0.012863159,-0.032958984,-0.0038013458,-0.0074005127,-0.040252686,-0.033935547,-0.0053977966,0.0115737915,-0.013961792,0.00043296814,-0.032592773,-0.021636963,0.003030777,-0.043304443,0.016601562,0.008010864,0.016586304,0.0024356842,-0.017150879,0.012390137,0.03982544,-0.017959595,0.036956787,-0.023208618,0.0069274902,-0.048675537,-0.009635925,0.06341553,0.02532959,0.007858276,-0.01890564,0.0047950745,-0.031219482,-0.0491333,-0.0007247925,-0.012641907,0.0068626404,0.011116028,-0.008102417,-0.049835205,-0.014846802,-0.030410767,0.0013694763,0.0048065186,0.021560669,0.019607544,0.0010166168,0.00009518862,0.0067367554,-0.012962341,-0.050872803,0.001789093,0.010543823,0.0010566711,0.010223389,0.052093506,0.0027561188,-0.0001950264,0.009346008,-0.010276794,0.020111084,-0.016052246,0.013557434,0.0010032654,0.007537842,-0.0059890747,-0.0010671616,-0.019012451,0.01789856,0.078125,-0.015975952,0.0049819946,-0.020065308,-0.0073776245,0.028335571,0.0065841675,-0.059692383,-0.013725281,-0.038604736,0.01991272,-0.0038700104,0.021194458,0.019577026,0.026062012,-0.041534424,-0.05316162,-0.015533447,0.013908386,-0.0007853508,-0.06304932,-0.018676758,-0.064819336,-0.022338867,-0.017181396,-0.0071792603,0.0043411255,0.0013637543,-0.026229858,-0.07965088,0.005794525,0.047454834,0.014884949,0.00015127659,-0.01322937,0.036499023,0.010665894,-0.026855469,-0.036712646,0.01802063,-0.031036377,-0.022201538,-0.037384033,0.04269409,-0.012779236,-0.031951904,0.017715454,0.007774353,0.020889282,-0.014945984,-0.0044937134,-0.013023376,-0.010681152,-0.0021686554,0.007030487,-0.0046043396,-0.023513794,0.0259552,-0.048553467,0.021881104,0.012641907,-0.0011510849,-0.018569946,0.029159546,0.024459839,-0.03967285,-0.011917114,0.03564453,-0.0027275085,0.032470703,-0.02859497,0.05038452,0.012611389,-0.016662598,0.015388489,-0.021972656,-0.017364502,-0.051605225,-0.036102295,0.0014333725,0.005420685,0.020523071,-0.010627747,-0.009262085,0.021896362,0.0067825317,0.01612854,-0.020553589,-0.022628784,-0.007129669,0.006778717,-0.004085541,0.00064086914,0.0018291473,0.025558472,0.034820557,0.04724121,-0.0073242188,-0.0028743744,0.018157959,0.018722534,-0.018936157,0.012802124,0.029159546,0.005821228,0.019241333,0.019760132,0.016311646,-0.044067383,-0.016723633,-0.0062561035,-0.005596161,0.0047302246,0.009315491,-0.004459381,0.0035705566,-0.0059165955,0.029434204,-0.042755127,0.013191223,-0.030593872,-0.033447266,-0.0014657974,-0.01977539,0.008674622,0.011169434,0.009376526,0.015510559,0.002658844,0.04019165,-0.005783081,-0.0119018555,0.026412964,0.02268982,0.0052337646,-0.017349243,0.00041627884,-0.012336731,-0.0055999756,0.0033626556,-0.007205963,0.007701874,0.031707764,-0.010063171,0.021759033,-0.006801605,0.033416748,0.0043945312,0.021209717,-0.0034599304,0.006137848,-0.009536743,0.04058838,-0.048980713,0.011734009,0.040039062,-0.0006122589,-0.0036849976,-0.016113281,-0.034301758,0.03805542,0.020645142,-0.021102905,0.043518066,-0.007335663,0.023330688,-0.032104492,-0.023147583,0.010429382,-0.020889282,-0.027679443,0.022888184,-0.007434845,-0.0074882507,0.027893066,-0.031066895,0.026062012,-0.042419434,0.019073486,-0.000330925,0.012886047,-0.030258179,-0.008399963,-0.01133728,-0.02532959,-0.008293152,0.0012845993,-0.0046424866,0.05911255,0.044067383,0.008682251,0.022354126,0.009117126,0.0110321045,-0.04559326,-0.01828003,0.0056877136,-0.030670166,0.011650085,-0.029891968,0.03717041,0.04348755,-0.0027637482,0.03274536,0.04815674,0.026748657,0.025970459,0.0022144318,-0.0067443848,0.019699097,-0.013618469,0.018737793,0.009757996,0.03564453,-0.02418518,0.0113220215,0.0020256042,0.03277588,-0.025543213,0.044647217,0.06518555,0.03567505,-0.018081665,0.047607422,-0.024963379,-0.004676819,-0.032592773,-0.015014648,0.042053223,0.003921509,0.039520264,0.027008057,0.0036258698,-0.019882202,0.027893066,0.003376007,-0.046936035,0.028701782,0.026260376,-0.007736206,-0.009590149,-0.0033016205,-0.0013494492,-0.055786133,-0.009597778,0.026367188,-0.013519287,0.016464233,0.0011548996,0.0056991577,-0.021377563,0.021347046,0.0073127747,0.009529114,-0.014190674,0.02330017,0.020187378,0.012260437,0.022994995,0.008880615,0.023620605,-0.022705078,-0.0004785061,0.013748169,0.019012451,0.0011816025,0.008872986,0.024475098,0.01637268,0.051940918,0.03692627,-0.019042969,-0.009628296,0.031707764,0.013046265,-0.0048713684,0.027313232,0.021560669,0.012084961,0.035003662,0.036102295,0.02218628,-0.03366089,0.0076293945,-0.010719299,0.0129852295,-0.013053894,-0.018737793,0.005168915,-0.005355835,0.023376465,0.002937317,-0.017822266,0.038909912,0.034088135,0.0009417534,0.010818481,-0.0047302246,0.0054626465,-0.006175995,0.0067710876,0.017822266,-0.020904541,0.013504028,0.014228821,0.029083252,-0.0178833,0.03668213,0.004058838,-0.008102417,0.004245758,0.010513306,-0.042175293,0.0013036728,0.0035152435,0.0057296753,-0.043395996,0.0021591187,0.012542725,-0.0070381165,0.028457642,0.00082206726,0.009475708,0.0010738373,0.021942139,0.021575928,-0.0072250366,-0.013999939,-0.023834229,0.02468872,0.03930664,-0.0027503967,0.00447464,-0.0038452148,-0.0026340485,0.020965576,-0.006034851,-0.0060806274,-0.011329651,-0.015510559,-0.054107666,0.025466919,0.057281494,-0.00054216385,0.03274536,-0.009963989,-0.014801025,-0.0047836304,0.021835327,-0.0015506744,-0.004760742,-0.0146865845,0.014831543,-0.011558533,0.059051514,0.02960205,0.0020065308,0.015991211,-0.018035889,-0.026489258,0.004737854,-0.015296936,0.021469116,-0.018966675,0.000043928623,-0.015144348,0.024597168,-0.013465881,-0.034942627,-0.0023288727,-0.021347046,-0.0056877136,-0.022460938,0.011039734,0.030761719,0.019561768,0.03173828,0.019134521,-0.021881104,0.06311035,-0.02218628,0.047821045,-0.017181396,-0.00064611435,0.040802002,0.025100708,0.053710938,0.03866577,0.013633728,-0.021118164,0.009750366,0.023971558,0.03213501,0.011100769,-0.010543823,-0.016815186,0.04269409,0.00030875206,0.017486572,-0.0015707016,-0.011650085,0.018508911,-0.0030021667,-0.011772156,-0.0018196106,0.003112793,0.013839722,0.038391113,-0.030731201,-0.01864624,-0.02166748,-0.0064888,0.03378296,-0.000020503998,-0.00081539154,-0.003358841,-0.018722534,0.02027893,-0.030548096,-0.011856079,-0.011383057,0.028442383,-0.043426514,-0.02368164,0.0107803345,0.018539429,-0.024719238,0.027008057,0.01939392,-0.010322571,0.0256958,0.050811768,0.0014047623,0.057434082,-0.00005096197,0.023956299,0.031036377,0.0054016113,-0.02229309,0.015296936,0.021774292,-0.021621704,0.009864807,0.039886475,0.00034618378,-0.0011405945,0.013168335,-0.018478394,0.0062675476,0.015274048,-0.017929077,-0.00020503998,-0.01411438,0.007911682,0.0046653748,0.017807007,0.009399414,0.0067329407,0.0067710876,-0.018692017,-0.0005841255,0.042175293,0.006816864,-0.049438477,0.00970459,0.016586304,0.018875122,-0.032318115,-0.0076293945,-0.010482788,-0.03173828,0.015510559,0.03366089,-0.0010061264,0.0015239716,-0.018875122,0.00381279,0.028411865,0.020751953,0.015655518,0.0154800415,0.01739502,0.023132324,-0.026855469,0.010475159,-0.008262634,0.011741638,-0.0003156662,-0.0024681091,-0.0031700134,-0.028884888,0.008460999,0.006000519,0.009788513,0.0016622543,-0.009124756,0.036621094,-0.01210022,-0.012466431,0.0008049011,0.008659363,-0.013656616,-0.019042969,-0.02357483,0.020202637,0.055633545,-0.022506714,-0.008987427,-0.0014734268,0.011787415,0.025680542,0.019302368,0.0067443848,0.034057617,0.028366089,-0.017623901,-0.029083252,0.018234253,-0.01008606,-0.041870117,0.021835327,-0.018249512,-0.007926941,0.0146102905,0.0076560974,0.002571106,-0.024642944,-0.022781372,-0.011161804,-0.01209259,0.022338867,-0.011482239,0.0075798035,-0.02458191,-0.020050049,0.02053833,-0.016738892,-0.04147339,-0.03366089,-0.011657715,-0.01914978,-0.05593872,0.008590698,-0.013198853,-0.005908966,-0.020233154,-0.008934021,-0.007534027,0.03753662,-0.0028686523,0.0055160522,0.0067825317,0.033813477,-0.0001809597,0.012237549,0.02079773,-0.018157959,-0.020874023,-0.015930176,-0.014259338,-0.012496948,0.014633179,-0.011169434,0.03591919,-0.0053253174,-0.0029010773,-0.0032577515,-0.017974854,0.004722595,-0.012550354,-0.033203125,-0.004562378,0.015571594,0.015289307,-0.009666443,-0.0075645447,0.03250122,-0.023147583,-0.01927185,0.010986328,0.04269409,0.0046958923,0.033447266,-0.021713257,-0.014625549,-0.013465881,0.0038051605,-0.02130127,-0.0020141602,0.009208679,-0.004585266,-0.012680054,0.008293152,0.007987976,-0.0048179626,0.0045928955,0.030731201,-0.00033593178,-0.02357483,0.042388916,0.010055542,-0.0016288757,-0.020462036,-0.008506775,0.03010559,0.035858154,0.012229919,-0.0006222725,-0.00026988983,0.014129639,-0.012321472,0.018035889,0.017868042,-0.024017334,-0.027633667,-0.017410278,-0.024414062,0.0368042,0.0016994476,0.006591797,-0.012077332,0.017288208,-0.01626587,-0.017623901,-0.014663696,0.027526855,-0.008369446,-0.021347046,0.0022010803,0.00018429756,0.018005371,-0.03314209,-0.0030651093,-0.038238525,-0.025650024,-0.022491455,-0.018310547,0.016357422,0.0033569336,-0.030075073,-0.0025672913,-0.006603241,-0.0090408325,0.014518738,0.03933716,-0.0068359375,-0.003227234,0.008407593,0.017242432,-0.029891968,0.016525269,-0.019424438,-0.007850647,0.0058135986,-0.0060424805,0.022323608,-0.007926941,0.021484375,0.012275696,-0.02041626,0.036376953,-0.0035419464,0.030654907,-0.016784668,-0.00054740906,-0.017822266,-0.0012636185,0.018539429,-0.01007843,-0.021774292,0.013916016,-0.0079193115,-0.02619934,0.014190674,0.027740479,0.034942627,-0.014404297,0.034576416,-0.008621216,-0.011238098,0.025177002,0.014595032,-0.026672363,0.005012512,0.042297363,-0.0022411346,-0.0019254684,0.011169434,-0.014350891,-0.020462036,-0.008872986,0.014778137,-0.019439697,-0.00034284592,0.015853882,0.013748169,0.043945312,0.017089844,0.016189575,0.034973145,0.011192322,0.024307251,0.010681152,0.03845215,0.0158844,-0.005382538,0.011894226,0.019119263,-0.02267456,0.008117676,-0.005050659,0.017623901,-0.050994873,0.011459351,-0.0049819946,0.027526855,-0.0063705444,0.00057935715,-0.009162903,0.0045814514,-0.019760132,0.009002686,-0.034973145,0.016403198,0.03866577,0.018325806,-0.0022029877,0.0066719055,-0.028564453,0.020355225,0.0390625,0.00010353327,-0.031204224,-0.00027275085,0.015159607,-0.0005426407,0.001039505,0.006225586,-0.018096924,-0.02394104,0.00036406517,0.004737854,-0.015548706,-0.0061531067,0.027389526,0.007572174,-0.008216858,0.003276825,0.020126343,0.013504028,0.0012216568,-0.0024662018,-0.0027656555,0.017868042,0.040130615,-0.007648468,0.024749756,0.026824951,-0.01876831,0.047088623,0.002040863,0.019210815,-0.022964478,-0.0048942566,-0.03186035,0.004371643,-0.030319214,-0.013877869],"createdAt":"2026-04-18T18:31:59.699Z","updatedAt":"2026-04-23T02:00:18.275Z","lastSeenAt":"2026-04-23T02:00:18.275Z","tsv":"'/api/v1/users':34,179 '0.02':128 '000':106 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':112 '20':105 '300':119 '402':193 'Base network API' 'USDC gated endpoint' 'accept':93 'access':6,22,91,142,214 'across':131 'actual':181,207 'advertis':123 'ai':70 'analyt':69 'api':5,21,43,65,90,135,150,213 'base':9,25,54,114 'base-network' 'behind':80 'beyond':209 'broader':61 'captur':195 'categori':66 'challeng':83,99,194 'confirm':191 'connect':158 'content':164 'contract':111 'data':68 'descript':175 'determin':205 'difficult':203 'doc':148 'document':143,200 'enabl':42 'endpoint':7,23,35,86,133,180,189 'exampl':172 'expect':187 'extrem':145 'financ':73 'flat':125 'function':208 'gate':3,19,79 'generic':211 'http':94 'http-post' 'includ':67 'infrastructur':76 'input':185 'instant':141 'key':136 'label':88,215 'lack':198 'learn':72 'limit':139 'live':192 'lowpaymentfee' 'lowpaymentfee.com':37 'machin':71 'make':201 'maximum':102 'multipl':64 'network':10,26,55 'no-api-key-required' 'offer':63 'openapi':168 'page':153 'part':58 'pay':12,28 'pay-per-request':11,27 'pay-per-request API' 'payment':49,82,103 'per':13,29,47,129 'per-request':46 'per-request-billing' 'platform':62,122 'post':95 'premium':4,20,89,212 'premium API' 'price':149 'prompt':160 'rate':126,138 'readm':152 'render':155 'request':14,30,48,96,130 'request/response':171 'requir':45 'return':182 'schema':169 'second':120 'spars':146 'specif':85 'specifi':100 'timeout':117 'token':110 'unit':107 'usdc':16,32,51,109 'usdc-payment' 'users endpoint' 'util':77 'wallet':159 'web3':74 'x402':2,18,41,81,98 'x402 API' 'x402-enabled':40 'x402-gated':1,17 'x402-payment-gating'","prices":[{"id":"c9262aea-bbfa-4213-9091-09db437b0ef3","listingId":"07309359-c9fa-4747-9d00-45ccef684c15","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/users","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:31:59.699Z"}],"sources":[{"listingId":"07309359-c9fa-4747-9d00-45ccef684c15","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/users","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:59.699Z","lastSeenAt":"2026-04-23T02:00:18.275Z"}],"details":{"listingId":"07309359-c9fa-4747-9d00-45ccef684c15","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/users \\\n  -H \"Content-Type: application/json\"\n# Returns 402 with x402 payment challenge; include X-PAYMENT header after payment to access.","exampleRequest":null,"exampleResponse":{"error":"X-PAYMENT header is required","accepts":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/users","description":"Premium API Access","maxAmountRequired":"20000","maxTimeoutSeconds":300}],"x402Version":1},"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge with USDC on Base network, maxAmountRequired 20000, payTo 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/users"},{"claim":"Platform advertises $0.02 per request, no API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Multiple API categories offered: Data & Analytics, AI & ML, Finance & Web3, Infrastructure","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing a pay-per-request users API without traditional API key registration","Programmatic agent-driven API consumption via x402 micropayments","Integrating USDC-based payment flows into automated workflows"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can handle on-chain USDC payments on Base","Use cases requiring keyless, pay-as-you-go API access"],"notFor":["Users who need detailed API documentation or schemas before integrating","Applications requiring free or subscription-based API access","Production systems that need guaranteed SLAs or documented error handling"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:45:46.874Z"},"updatedAt":"2026-04-23T02:00:18.275Z"}}