{"id":"588701cb-263b-43bd-bba3-d3afb5a0a5a0","shortId":"FzGwjG","kind":"x402","title":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","description":"This endpoint at `/api/v1/benefits/78` is part of the lowpaymentfee.com platform, which offers a suite of x402-protocol pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. The specific endpoint is labeled \"Premium API Access\" and is gated behind an x402 payment challenge requiring USDC on the Base network.\n\nThe x402 challenge indicates a maximum amount of 20,000 base units of USDC (0x8335…2913 on Base), which at 6 decimals equals $0.02 per request. This is consistent with the site's advertised flat pricing of $0.02/request across all endpoints. The platform advertises no API keys, no rate limits, and instant access — payment is the only authentication mechanism. The endpoint accepts POST requests and returns `application/json`.\n\nHowever, the specific functionality behind `/api/v1/benefits/78` is not documented beyond the generic \"Premium API Access\" label. The site's docs, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. Without documentation of request parameters, response schema, or what data/service this particular endpoint provides, it is impossible to determine its concrete utility. The endpoint is live (returning a valid 402 challenge), but its purpose remains opaque.","tags":[],"capabilities":["x402-payment-gated","usdc-base-network","pay-per-request","json-response","no-api-key","post-method"],"categories":["api","payments"],"synonyms":["x402 API","pay-per-call API","USDC gated endpoint","lowpaymentfee","micropayment API","Base network API","premium access endpoint"],"warnings":["No documentation available for this specific endpoint's functionality or parameters","All doc pages on the site render only 'Connect wallet' with no content","The label 'Premium API Access' is generic and does not describe what data or service is returned","No input or output schema provided — request format is unknown","Cannot verify what the endpoint returns after successful payment"],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/78","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/benefits/78","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 with clear pricing ($0.02 USDC on Base). However, there is zero documentation on what the endpoint actually does — no input schema, no output schema, no description beyond the generic label. The docs/pricing/README pages are all empty (wallet-connect only). This is effectively a stub listing.","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":"2026-04-19T17:49:05.455Z","embedding":[-0.02407837,-0.017852783,0.042755127,0.015335083,0.01550293,-0.01864624,-0.035003662,0.04537964,0.06933594,-0.06762695,0.03656006,-0.047424316,-0.036193848,-0.04812622,-0.040008545,0.0035648346,-0.010055542,0.012863159,-0.04675293,0.041381836,0.04510498,-0.022842407,-0.012565613,0.05609131,0.0059509277,-0.018798828,-0.014152527,-0.009468079,-0.0058937073,-0.020767212,0.020019531,-0.028884888,-0.007068634,0.013618469,-0.01121521,-0.003692627,0.0065994263,0.04812622,0.02670288,-0.0002863407,0.0036315918,-0.067871094,-0.021011353,-0.0006632805,-0.044555664,-0.0049095154,0.0044898987,-0.024276733,-0.018722534,0.0045814514,-0.026138306,-0.0028057098,-0.019378662,0.0010433197,0.017074585,0.0002039671,-0.011390686,-0.014373779,0.0028247833,0.017745972,-0.014564514,-0.056488037,-0.013000488,0.015319824,0.009437561,0.044281006,-0.0143585205,0.049346924,0.0031414032,0.05645752,0.048309326,0.055908203,0.027526855,0.03149414,-0.00497818,-0.020004272,0.003982544,0.049682617,-0.014205933,-0.015235901,-0.018829346,-0.013412476,-0.056762695,-0.01020813,-0.017715454,-0.057006836,-0.02330017,0.010932922,-0.037597656,0.028045654,-0.070251465,-0.0076522827,-0.029647827,0.016677856,-0.005970001,-0.012786865,-0.028167725,0.017959595,-0.007865906,0.0059165955,0.009094238,-0.046844482,0.016296387,0.014854431,0.059143066,0.021194458,0.01586914,0.0440979,0.00027275085,-0.04699707,-0.014839172,0.0028743744,-0.012664795,0.00010639429,0.020401001,0.005607605,-0.026855469,0.014801025,-0.0077438354,0.033966064,-0.042755127,0.05831909,0.015075684,-0.038757324,0.012588501,-0.046020508,0.0017414093,0.003490448,-0.036865234,-0.011711121,0.015640259,0.005027771,0.022140503,-0.035980225,-0.028747559,0.0032691956,-0.013977051,-0.028305054,-0.046875,-0.015022278,0.026809692,-0.036468506,0.041534424,0.026000977,-0.097473145,-0.009902954,-0.046966553,0.020065308,-0.042633057,0.0039749146,-0.010192871,0.0236969,-0.0029449463,-0.0135269165,-0.018295288,-0.026290894,-0.00017464161,0.034454346,-0.008575439,0.039123535,0.0013666153,0.02293396,0.0034999847,0.017593384,0.02609253,0.04849243,0.007129669,-0.07684326,-0.07635498,-0.032989502,-0.004737854,-0.017486572,-0.042419434,0.0025463104,0.012008667,-0.06536865,-0.029510498,-0.024658203,-0.00008928776,-0.049804688,-0.0069999695,-0.029571533,0.00023829937,-0.01134491,-0.07720947,-0.02822876,-0.024963379,0.07006836,0.010612488,-0.002729416,0.02923584,-0.0062828064,0.06958008,0.011428833,-0.021331787,-0.04727173,0.023864746,-0.02305603,0.041229248,0.014884949,0.008201599,-0.039611816,0.032989502,0.04800415,0.010665894,-0.012413025,0.0004105568,-0.043823242,-0.04336548,-0.045776367,0.0044174194,0.016464233,0.0051612854,0.03289795,-0.01348114,-0.028793335,-0.00381279,0.0057144165,0.01991272,0.062927246,0.0063972473,0.01386261,-0.001865387,0.021316528,-0.020584106,0.047607422,0.03451538,0.02558899,-0.027557373,-0.018615723,0.018005371,0.031921387,-0.032196045,-0.011756897,-0.020324707,0.021240234,0.003255844,0.00157547,0.038146973,-0.022399902,-0.0069847107,-0.031402588,-0.008682251,0.025527954,0.016967773,-0.035705566,-0.046295166,-0.05859375,0.027862549,0.079833984,0.028549194,0.0058517456,0.009460449,-0.018798828,-0.024337769,-0.061462402,0.049957275,0.06781006,-0.017532349,-0.015472412,0.030319214,-0.018936157,-0.029907227,-0.022766113,-0.013587952,-0.016342163,-0.020614624,0.0056419373,-0.036590576,0.004005432,0.017730713,0.026779175,0.05026245,-0.010169983,-0.0496521,-0.023117065,0.017471313,0.015365601,-0.029205322,-0.009056091,-0.0052261353,0.013519287,0.023361206,-0.0005106926,0.030090332,0.0016307831,0.017074585,-0.002128601,-0.002878189,-0.014801025,-0.025497437,0.022262573,-0.0018224716,-0.06689453,0.022506714,0.00932312,0.06173706,-0.042419434,0.03414917,-0.007762909,-0.0049057007,0.066467285,-0.021560669,-0.046783447,0.0104904175,0.013900757,0.052093506,0.045135498,0.01626587,-0.002609253,-0.0005130768,0.041503906,-0.016189575,-0.0050849915,0.0025081635,0.021987915,0.04510498,0.0116119385,-0.05596924,-0.0234375,-0.009239197,-0.019332886,0.027542114,-0.03314209,0.0340271,-0.016311646,-0.002117157,-0.024108887,0.008239746,-0.042633057,0.0075302124,-0.018508911,-0.016525269,-0.0059280396,-0.015823364,0.013336182,0.016098022,-0.009025574,0.00198555,0.029373169,0.017929077,-0.0061073303,-0.030807495,-0.029785156,-0.026382446,0.017593384,0.022323608,0.033935547,0.015296936,0.04034424,-0.039276123,0.01474762,0.025680542,0.011314392,0.027313232,-0.01953125,0.013999939,-0.04598999,-0.061676025,-0.018096924,-0.057037354,0.033325195,-0.00092315674,0.009155273,0.042266846,0.008399963,-0.022888184,-0.04031372,0.04562378,-0.024978638,-0.00592041,0.031951904,-0.017501831,-0.04888916,0.006187439,0.014549255,0.0054397583,0.020629883,0.016204834,0.0021038055,0.058685303,0.046203613,0.01737976,0.015640259,0.020950317,0.020828247,0.0010204315,-0.022705078,-0.02696228,-0.033416748,0.019332886,-0.019317627,-0.014411926,-0.09069824,0.03414917,0.019851685,0.06976318,0.0036315918,0.026504517,0.038146973,-0.016677856,0.0099105835,-0.035491943,-0.02293396,-0.025009155,-0.049591064,0.016403198,-0.010192871,-0.0031108856,-0.031036377,0.024520874,0.013175964,0.016998291,-0.046691895,0.0847168,0.0003077984,-0.011436462,0.03302002,0.007511139,0.050201416,0.059020996,-0.04901123,0.015701294,0.023620605,-0.021896362,0.006690979,0.035583496,-0.017364502,-0.008010864,-0.057037354,-0.026245117,-0.003370285,-0.0029411316,-0.05429077,0.007411957,0.013053894,0.03475952,0.020812988,-0.026428223,-0.031585693,0.0037059784,-0.01689148,-0.05114746,-0.0043640137,-0.043029785,0.026947021,0.058044434,-0.03527832,-0.00015056133,-0.00970459,-0.003063202,0.0048675537,0.014190674,-0.016113281,-0.008377075,-0.027786255,0.019104004,-0.0014295578,0.025878906,0.01184082,0.030838013,0.035339355,0.016036987,0.05154419,0.015235901,-0.027938843,-0.054840088,0.0011806488,-0.05307007,0.0038089752,0.00058078766,-0.012390137,0.002336502,-0.006881714,-0.028717041,-0.01977539,0.007762909,-0.025161743,0.015235901,0.02746582,-0.042053223,-0.020858765,-0.049072266,-0.016723633,0.004310608,0.08111572,0.042022705,0.00040245056,-0.064086914,-0.022598267,0.031982422,-0.00091457367,0.008628845,-0.016418457,-0.010261536,-0.012718201,-0.037322998,-0.045562744,-0.023254395,0.031051636,0.0040283203,-0.017501831,0.02470398,-0.010017395,0.017532349,0.0075912476,0.008056641,0.046020508,-0.025939941,-0.0026474,-0.048187256,0.018157959,0.0007519722,-0.013046265,-0.048339844,0.048553467,0.014137268,0.033447266,-0.0340271,0.006454468,0.0013380051,0.01739502,0.010925293,-0.013496399,-0.014427185,0.013381958,-0.040496826,-0.084106445,0.039215088,-0.01058197,0.02230835,-0.0028247833,0.01625061,0.035888672,-0.0024909973,-0.012741089,0.026870728,-0.029373169,-0.0066070557,-0.043945312,-0.03375244,-0.025421143,0.010108948,-0.013824463,0.013145447,-0.007987976,0.011558533,-0.008735657,-0.02116394,0.03161621,0.0029792786,-0.0040740967,0.042297363,0.0045928955,0.02218628,0.043029785,0.0020713806,-0.026672363,0.030914307,0.0054626465,0.0033454895,0.001581192,0.03942871,0.02949524,-0.013191223,-0.006752014,-0.0018587112,-0.010658264,-0.019485474,-0.0211792,-0.0004582405,0.04486084,0.021987915,-0.03353882,0.04425049,0.010116577,-0.03515625,-0.0101623535,0.012557983,0.018920898,-0.03503418,0.020339966,0.02470398,0.05682373,-0.027175903,-0.0064468384,0.023742676,0.02684021,0.01953125,0.023849487,-0.019256592,0.0061149597,-0.017944336,0.024032593,-0.000062942505,-0.0026741028,0.003692627,-0.0070495605,0.026031494,0.032714844,0.025787354,-0.03543091,-0.010818481,-0.013847351,-0.0056381226,-0.015594482,0.017364502,0.026489258,0.018066406,-0.01675415,0.025131226,0.022979736,-0.037872314,-0.016540527,-0.020874023,0.043029785,-0.018997192,-0.0059432983,0.011657715,0.0042037964,0.03793335,-0.05078125,0.004627228,0.0051651,0.016113281,-0.014480591,-0.04827881,-0.028442383,0.0019102097,0.036254883,0.0005645752,0.0041999817,0.03253174,-0.01222229,0.011367798,0.014411926,0.0007162094,-0.015472412,-0.02116394,-0.043518066,-0.0011224747,0.0059890747,-0.003419876,-0.020233154,0.0068588257,-0.030761719,-0.030593872,0.0028457642,-0.016326904,-0.0033416748,-0.011268616,0.019332886,0.027160645,0.0009689331,0.009536743,-0.0135650635,-0.022094727,0.014854431,0.009460449,0.023071289,-0.041656494,0.008529663,-0.021453857,-0.0065612793,-0.014442444,0.025161743,0.009246826,0.0046844482,0.0058784485,0.017974854,-0.03866577,0.030731201,-0.014526367,0.004108429,0.00749588,-0.028366089,-0.0129852295,-0.016082764,-0.024139404,0.033325195,-0.014274597,0.010414124,-0.019058228,-0.029342651,-0.013542175,-0.04522705,0.023956299,0.032226562,0.035491943,-0.015945435,-0.0005569458,0.0057907104,0.0004107952,-0.0071792603,-0.0041770935,0.0025310516,0.026046753,0.0357666,0.003282547,-0.041900635,-0.022369385,0.0008234978,-0.0025253296,-0.049835205,-0.046142578,-0.018417358,0.010383606,-0.00472641,0.0035247803,-0.03164673,-0.016342163,0.0029239655,-0.0418396,0.019241333,0.018218994,0.016708374,0.017791748,-0.025924683,0.0046653748,0.024139404,-0.028442383,0.025466919,-0.010803223,-0.006351471,-0.03955078,-0.0011072159,0.040222168,0.027160645,0.0038585663,-0.01209259,0.008934021,-0.023086548,-0.058044434,-0.007019043,-0.011222839,0.0062828064,0.015129089,-0.008117676,-0.049987793,-0.016189575,-0.016433716,0.002527237,0.012763977,0.0063591003,0.022415161,-0.0036754608,-0.000197649,-0.009742737,-0.0012960434,-0.04095459,0.007205963,0.01260376,-0.0096588135,0.010818481,0.05291748,0.0072402954,-0.001584053,0.00004643202,0.0044822693,0.018814087,-0.028915405,0.0019893646,-0.0079422,0.010131836,-0.004901886,-0.02355957,-0.027801514,0.005393982,0.08319092,-0.010513306,0.017791748,-0.010932922,-0.013031006,0.008140564,0.030532837,-0.053771973,-0.0060539246,-0.035614014,0.023773193,-0.009841919,0.024429321,0.014976501,0.024993896,-0.03829956,-0.056762695,-0.0031833649,0.016113281,0.0003068447,-0.058929443,-0.016967773,-0.04269409,-0.014785767,-0.022476196,-0.014923096,0.004070282,0.002664566,-0.010360718,-0.10290527,-0.0057792664,0.06085205,0.006275177,0.012710571,-0.024520874,0.027069092,0.026260376,-0.018615723,-0.028137207,0.02772522,-0.028015137,-0.013893127,-0.03152466,0.038360596,-0.017929077,-0.029907227,0.023651123,0.0060157776,0.021743774,-0.015045166,0.008239746,-0.011528015,0.0140686035,-0.00182724,0.014122009,-0.0069847107,-0.008018494,0.029434204,-0.043029785,0.016403198,0.018707275,-0.008628845,-0.009185791,0.025100708,0.023986816,-0.036499023,-0.021713257,0.047576904,0.0046195984,0.038757324,-0.032836914,0.035247803,0.007675171,-0.012268066,0.019378662,-0.013221741,-0.024154663,-0.05419922,-0.033172607,0.0074539185,0.008483887,0.012413025,-0.019332886,-0.00749588,0.021392822,-0.004169464,0.007385254,-0.010314941,-0.021392822,-0.009536743,0.009307861,0.010971069,0.00023269653,-0.004825592,0.030334473,0.02230835,0.04248047,0.0018777847,-0.011016846,0.019821167,0.0143585205,-0.027740479,0.008522034,0.008560181,0.010971069,0.014801025,0.021240234,0.020004272,-0.022903442,-0.01348114,-0.013175964,-0.012886047,0.022720337,0.005748749,-0.005859375,0.0019235611,0.008216858,0.007282257,-0.044067383,0.010383606,-0.026931763,-0.034973145,-0.008270264,-0.016403198,-0.0062294006,0.0046157837,0.0036888123,0.0067749023,-0.0010318756,0.04925537,-0.0055770874,-0.016952515,0.020950317,0.026229858,0.0010881424,-0.030670166,0.005355835,-0.0022659302,-0.01108551,0.005695343,-0.017196655,0.0051574707,0.024902344,-0.012702942,0.0021533966,-0.0012207031,0.02998352,-0.005466461,0.015586853,-0.0044517517,0.0031471252,-0.0206604,0.043395996,-0.047821045,0.012275696,0.027420044,0.009651184,0.00096035004,-0.022247314,-0.033081055,0.020477295,0.0036582947,-0.031143188,0.03375244,-0.013053894,0.022262573,-0.019927979,-0.021514893,-0.0020523071,-0.01928711,-0.027236938,0.040130615,0.00074625015,-0.004371643,0.027328491,-0.029296875,0.025222778,-0.055786133,0.014442444,0.0035247803,-0.00012421608,-0.01574707,-0.022216797,-0.008178711,-0.010604858,-0.011146545,-0.0008568764,0.0019445419,0.05230713,0.035339355,0.014038086,0.022247314,0.0048828125,0.0067710876,-0.0423584,-0.018325806,-0.007583618,-0.030044556,0.020202637,-0.035705566,0.045288086,0.04095459,-0.007232666,0.032958984,0.046295166,0.026809692,0.0087509155,0.023605347,0.0013895035,0.015022278,-0.011550903,0.027374268,0.007709503,0.052520752,-0.02015686,0.0140686035,-0.0028572083,0.023742676,-0.018447876,0.029708862,0.08227539,0.03253174,-0.012138367,0.036590576,-0.0016021729,-0.0063591003,-0.02130127,-0.018722534,0.054626465,-0.002166748,0.05227661,0.029052734,0.009605408,-0.007247925,0.022659302,-0.013053894,-0.041046143,0.045410156,0.020492554,-0.012565613,-0.0046043396,-0.014289856,0.013946533,-0.05001831,-0.02456665,0.018188477,-0.0020503998,0.009727478,-0.011100769,0.00041627884,-0.012168884,0.029907227,0.013999939,0.01084137,-0.022705078,0.024429321,0.020599365,0.0032920837,0.015098572,0.0059814453,0.031341553,-0.024658203,-0.009933472,0.010009766,0.012428284,-0.0062828064,-0.0023078918,0.023010254,0.02684021,0.054107666,0.030700684,-0.018493652,-0.014305115,0.023864746,0.019073486,0.0049095154,0.038269043,0.02822876,-0.000038683414,0.043884277,0.0440979,0.020370483,-0.036010742,0.010772705,-0.011955261,0.018508911,0.00024223328,-0.022918701,0.0062446594,-0.0066566467,0.0018482208,0.008903503,-0.008720398,0.02909851,0.031036377,0.006340027,0.0013246536,0.00497818,0.007850647,0.004749298,-0.00080537796,0.009376526,-0.017623901,0.016342163,0.009513855,0.028640747,-0.015197754,0.032226562,-0.0005645752,-0.015007019,0.002784729,0.012382507,-0.035064697,-0.00070142746,0.0011053085,0.0038471222,-0.032592773,0.004837036,0.02456665,-0.009765625,0.03186035,0.0052833557,0.009651184,0.010383606,0.024002075,0.020629883,-0.010154724,-0.008666992,-0.022094727,0.023040771,0.038726807,-0.005302429,-0.00071430206,-0.014251709,0.014076233,0.014663696,-0.00094747543,-0.0047340393,-0.0035820007,-0.014884949,-0.048309326,0.009010315,0.05026245,0.018920898,0.02784729,-0.0009775162,-0.009788513,-0.0047035217,0.01802063,0.0061073303,-0.0046844482,-0.020080566,0.020736694,-0.005630493,0.055511475,0.024658203,-0.0022640228,0.011436462,-0.022872925,-0.021255493,0.008850098,-0.015304565,0.017364502,-0.009239197,0.004737854,-0.015045166,0.016525269,-0.017807007,-0.034118652,0.006248474,-0.025817871,-0.015655518,-0.027770996,0.007434845,0.011512756,0.0143585205,0.033416748,0.021911621,-0.027236938,0.072631836,-0.011222839,0.056884766,-0.023391724,0.002363205,0.045135498,0.045898438,0.04360962,0.02053833,0.012321472,-0.01977539,0.0031929016,0.029129028,0.022521973,0.00749588,-0.00030565262,-0.02192688,0.039093018,0.0059890747,0.017440796,-0.007091522,-0.0065727234,0.008354187,-0.006668091,-0.013664246,0.0004208088,-0.0014820099,0.013252258,0.048675537,-0.034088135,-0.020141602,-0.015090942,-0.013572693,0.038269043,-0.0035991669,0.0039634705,-0.008407593,-0.020401001,0.026245117,-0.02558899,-0.009185791,0.0066108704,0.034118652,-0.045288086,-0.0070114136,0.0051345825,0.013641357,-0.030334473,0.027755737,0.015472412,-0.009925842,0.012519836,0.042938232,-0.0009698868,0.04776001,-0.014259338,0.030944824,0.037017822,0.0054740906,-0.02494812,0.012504578,0.01638794,-0.027954102,0.009780884,0.036346436,0.0011510849,0.004798889,0.007633209,-0.019256592,0.0014190674,0.010803223,-0.0032234192,-0.00030088425,-0.011207581,-0.018875122,0.007205963,0.011680603,0.007297516,0.008590698,0.006336212,-0.015914917,-0.0060539246,0.04574585,0.004875183,-0.037902832,0.00969696,0.011947632,0.016204834,-0.032989502,-0.013641357,-0.0067863464,-0.033081055,0.010414124,0.034698486,0.004383087,-0.0016555786,-0.02268982,-0.0052261353,0.019943237,0.023132324,0.021331787,0.00034546852,0.007785797,0.026397705,-0.022628784,0.014007568,-0.012130737,-0.0047912598,0.016693115,0.009376526,-0.011779785,-0.02671814,0.006603241,-0.0022335052,0.013542175,0.00409317,-0.011444092,0.032043457,-0.013320923,-0.012756348,0.0001282692,0.009117126,-0.008407593,-0.028152466,-0.023666382,0.025039673,0.054138184,-0.019515991,-0.0069618225,0.00674057,0.027664185,0.023788452,0.031402588,0.009254456,0.038116455,0.021865845,-0.012588501,-0.034454346,0.014373779,-0.004650116,-0.04019165,0.027709961,-0.006374359,-0.02029419,0.027862549,0.009124756,-0.00062417984,-0.02381897,-0.025177002,-0.01007843,-0.022460938,0.032806396,-0.015029907,0.0063552856,-0.023117065,-0.0052375793,0.015098572,-0.006477356,-0.029541016,-0.03338623,-0.011886597,-0.01928711,-0.04336548,-0.0011491776,-0.019897461,0.005367279,-0.02154541,0.010437012,-0.013267517,0.044311523,-0.00047826767,-0.008613586,0.02230835,0.03378296,0.00182724,0.010360718,0.019012451,-0.02041626,-0.03149414,-0.007904053,-0.005191803,-0.0051078796,0.010360718,-0.017623901,0.035095215,0.005542755,-0.00579834,0.0008277893,-0.0045661926,-0.009063721,-0.0008864403,-0.035217285,-0.0056877136,0.012611389,0.02557373,-0.00092315674,-0.014717102,0.04296875,-0.013168335,-0.014839172,0.024002075,0.033477783,0.010421753,0.03744507,-0.0049705505,-0.019714355,-0.022979736,-0.0018396378,-0.018478394,0.0054397583,0.011627197,0.010421753,-0.0050811768,0.007888794,0.003370285,0.00016260147,-0.00945282,0.022140503,-0.010688782,-0.0031585693,0.030014038,0.011711121,0.00027155876,-0.021331787,-0.013648987,0.022033691,0.035003662,0.007850647,0.0031738281,-0.0074005127,0.012123108,-0.0135650635,0.0054626465,0.025253296,-0.01701355,-0.028823853,-0.017211914,-0.029022217,0.01991272,-0.001958847,0.007724762,0.0093307495,0.011116028,-0.020996094,-0.022354126,-0.015281677,0.022979736,-0.00026798248,-0.011367798,-0.0052261353,-0.0045776367,0.012939453,-0.026504517,-0.0036716461,-0.04119873,-0.027893066,-0.018692017,-0.035614014,0.012886047,0.0024032593,-0.021087646,0.00048732758,-0.004951477,-0.013999939,0.0034179688,0.033081055,-0.009963989,-0.015403748,0.0143966675,0.022506714,-0.01737976,0.018600464,-0.023773193,-0.01966858,0.026947021,0.00085258484,0.022964478,-0.01689148,0.018157959,0.018218994,-0.017105103,0.027938843,0.008003235,0.028335571,-0.01687622,0.0008511543,-0.0119018555,-0.014122009,0.01876831,-0.020385742,-0.023590088,0.0018253326,-0.010047913,-0.040496826,0.0149383545,0.031219482,0.033599854,-0.0093307495,0.03945923,-0.009590149,-0.018432617,0.017120361,0.010063171,-0.028915405,-0.003648758,0.041748047,0.0033721924,-0.0066566467,0.0018463135,-0.010002136,-0.013946533,-0.010101318,0.014411926,-0.014137268,-0.0032482147,0.025421143,0.015556335,0.048828125,0.010726929,0.014884949,0.030731201,0.009757996,0.027145386,0.00793457,0.049438477,0.006881714,-0.03527832,0.0059509277,0.013748169,-0.015701294,-0.01222229,-0.0020141602,-0.0002206564,-0.027679443,0.0158844,0.007205963,0.033050537,-0.012992859,0.011146545,-0.017807007,-0.0053596497,-0.021865845,0.0018587112,-0.031799316,0.01398468,0.038757324,0.02330017,0.001045227,0.013648987,-0.0262146,0.026916504,0.04925537,-0.0042762756,-0.04232788,-0.00082445145,0.003501892,0.0026359558,0.0010919571,0.011123657,-0.025878906,-0.012718201,-0.011558533,-0.024215698,0.001001358,0.0023880005,0.014274597,0.0037956238,-0.009925842,-0.0070114136,0.025970459,0.006126404,0.0035820007,0.00687027,0.004337311,0.030593872,0.03161621,-0.016418457,0.018676758,0.034118652,-0.030456543,0.03869629,-0.010299683,0.024307251,-0.020355225,0.004798889,-0.03164673,-0.006340027,-0.012062073,0.007446289],"createdAt":"2026-04-18T20:29:36.500Z","updatedAt":"2026-04-22T01:01:59.224Z","lastSeenAt":"2026-04-22T01:01:59.224Z","tsv":"'/api/v1/benefits/78':32,158 '/request':123 '0.02':108,122 '000':94 '0x8335':99 '20':93 '2913':100 '402':217 '6':105 'Base network API' 'USDC gated endpoint' 'accept':147 'access':70,138,167 'across':124 'advertis':118,129 'ai':55 'amount':91 'analyt':54 'api':5,19,51,69,131,166 'application/json':152 'authent':143 'base':8,22,83,95,102 'behind':74,157 'beyond':162 'challeng':78,87,218 'concret':208 'connect':181 'consist':113 'content':187 'data':53 'data/service':197 'decim':106 'determin':206 'doc':172 'document':161,189 'endpoint':6,20,30,65,126,146,200,211 'equal':107 'financ':58 'flat':119 'function':156 'gate':3,17,73 'generic':164 'howev':153 'imposs':204 'indic':88 'infrastructur':61 'instant':137 'json-response' 'key':132 'label':67,168 'learn':57 'limit':135 'live':213 'lowpaymentfee' 'lowpaymentfee.com':37 'machin':56 'maximum':90 'mechan':144 'micropayment API' 'network':84 'no-api-key' 'offer':40 'opaqu':223 'page':176 'paramet':192 'part':34 'particular':199 'pay':10,24,48 'pay-per-call API' 'pay-per-request':9,23,47 'payment':77,139 'per':11,25,49,109 'platform':38,128 'post':148 'post-method' 'premium':4,18,68,165 'premium access endpoint' 'price':120,173 'prompt':183 'protocol':46 'provid':201 'purpos':221 'rate':134 'readm':175 'remain':222 'render':178 'request':12,26,50,110,149,191 'requir':79 'respons':193 'return':151,214 'schema':194 'site':116,170 'span':52 'specif':64,155 'suit':42 'unit':96 'usdc':14,28,80,98 'usdc-base-network' 'util':62,209 'valid':216 'wallet':182 'web3':59 'without':188 'x402':2,16,45,76,86 'x402 API' 'x402-gated':1,15 'x402-payment-gated' 'x402-protocol':44","prices":[{"id":"0410630b-7fb5-44fd-95ec-a0dbba8c6929","listingId":"588701cb-263b-43bd-bba3-d3afb5a0a5a0","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/benefits/78","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T20:29:36.500Z"}],"sources":[{"listingId":"588701cb-263b-43bd-bba3-d3afb5a0a5a0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/78","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T20:29:36.500Z","lastSeenAt":"2026-04-22T01:01:59.224Z"}],"details":{"listingId":"588701cb-263b-43bd-bba3-d3afb5a0a5a0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/78\n# Returns 402 with x402 payment challenge.\n# Include X-PAYMENT header with a valid USDC payment proof on Base 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/benefits/78","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 challenge requiring USDC on Base with maxAmountRequired of 20000 base units ($0.02)","source_url":"https://lowpaymentfee.com/api/v1/benefits/78"},{"claim":"The platform advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/benefits/78"},{"claim":"Docs, pricing, and README pages show only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing a premium API resource with per-request USDC micropayments","Integrating x402-compatible agents with pay-as-you-go endpoints","Testing x402 protocol payment flows on Base"],"bestFor":["Developers experimenting with x402 pay-per-request protocols","Agents that can settle USDC payments on Base network","Users who want keyless, no-signup API access"],"notFor":["Users who need documented request/response schemas before integrating","Anyone requiring free or subscription-based API access","Production use cases requiring SLA guarantees or support"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.519Z"},"updatedAt":"2026-04-22T01:01:59.224Z"}}