{"id":"413dd398-74a1-4c1c-9483-06a04b8102bd","shortId":"9GKj4V","kind":"x402","title":"x402-payable premium API access on Base network, paid per-request in USDC.","tagline":"x402-payable premium API access on Base network, paid per-request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource path `/api/v1/generate/resource/126` does not clearly map to any of the named API categories listed on the provider's homepage (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), and no documentation exists describing what resource 126 actually returns. The endpoint is live and returns a valid x402 402 challenge.\n\nThe provider's site advertises a broad suite of pay-per-call APIs at $0.02 per request, covering analytics, AI inference (sentiment, summarization, classification, embeddings), finance/crypto data, and utility services. However, the x402 challenge for this specific endpoint specifies a maxAmountRequired of 20000 units of USDC (contract 0x8335…2913 on Base), which in USDC's 6-decimal representation equals $0.02 — consistent with the site's advertised pricing. Payment is made via the x402 \"exact\" scheme on the Base network, with no API keys or rate limits required.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, 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 description of what this particular resource endpoint produces. The listing title \"Premium API Access\" is generic and uninformative. Agents should treat this endpoint with caution until more documentation is available.","tags":[],"capabilities":["x402-payment","usdc-on-base","pay-per-request","no-api-key","json-response","http-post"],"categories":["api","infrastructure"],"synonyms":["premium API","paid API","x402 API","USDC API","Base network API","lowpaymentfee","micropayment API","pay-per-call API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README all show only 'Connect wallet' with no content","The specific resource at /api/v1/generate/resource/126 is not described anywhere on the provider's site","No OpenAPI schema, no request body format, and no response examples are available","Cannot determine what this endpoint actually returns without making a paid request"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/126","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/generate/resource/126","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what resource/126 actually does, no request/response schema, and the site's docs pages are empty. The listing title is generic. This 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":"2026-04-18T19:47:56.529Z","embedding":[-0.009239197,-0.03286743,0.04928589,0.017501831,0.010940552,-0.022216797,-0.009056091,0.022979736,0.066467285,-0.070495605,0.03567505,-0.062438965,-0.026672363,-0.046142578,-0.004436493,0.021942139,-0.0049324036,0.0005455017,-0.045166016,0.03152466,0.051696777,-0.0016317368,-0.011711121,0.04107666,-0.001493454,-0.017501831,-0.010826111,-0.010871887,0.0015821457,-0.027770996,0.023757935,-0.036834717,0.012199402,0.008338928,-0.015449524,-0.020263672,0.010681152,0.054656982,0.029418945,-0.0054779053,0.008140564,-0.06970215,0.017593384,0.0055732727,-0.051635742,0.014602661,0.010375977,-0.032470703,-0.016586304,-0.0028038025,-0.04046631,0.007083893,-0.015052795,0.0077056885,-0.004283905,0.014801025,-0.018081665,-0.015357971,-0.0063056946,0.0009217262,0.010154724,-0.064331055,-0.025726318,0.0070877075,0.018844604,0.03817749,0.00025773048,0.053253174,-0.009086609,0.0657959,0.04321289,0.06222534,0.031204224,0.025817871,0.0015516281,-0.016235352,-0.0075416565,0.046020508,-0.011100769,-0.011238098,-0.02029419,0.006313324,-0.047973633,-0.0039711,-0.030776978,-0.047912598,-0.012908936,0.011680603,-0.021057129,0.020996094,-0.06317139,-0.000072956085,-0.009918213,0.005630493,-0.010620117,-0.0036964417,-0.017089844,0.030563354,-0.0087890625,0.010398865,-0.01424408,-0.037506104,0.022491455,0.029052734,0.04473877,0.04559326,0.024002075,0.02482605,0.004436493,-0.027664185,-0.009025574,0.009887695,-0.0012636185,-0.003627777,0.0015497208,0.0067596436,-0.024520874,0.022781372,-0.009483337,0.017074585,-0.055603027,0.059539795,0.01322937,-0.015914917,0.005584717,-0.048461914,0.008056641,0.024887085,-0.039154053,-0.005016327,0.035491943,0.018478394,0.017425537,-0.02407837,-0.041229248,0.0003271103,-0.021865845,-0.021087646,-0.0463562,-0.026641846,0.034088135,-0.01689148,0.021087646,0.035583496,-0.095458984,-0.011940002,-0.039123535,0.014190674,-0.029281616,-0.01071167,0.0017976761,0.033721924,-0.013458252,-0.01209259,-0.027160645,-0.032287598,-0.009628296,0.04425049,-0.010047913,0.044189453,0.0054779053,0.029174805,0.004219055,0.010528564,0.02166748,0.030685425,-0.0016956329,-0.06149292,-0.07434082,-0.017913818,0.01436615,-0.012794495,-0.04397583,0.011390686,0.014434814,-0.06951904,-0.035247803,-0.018722534,0.004322052,-0.037506104,0.00056648254,-0.014854431,-0.00013136864,0.004096985,-0.06414795,-0.04046631,-0.03010559,0.058258057,0.041137695,0.009361267,0.028274536,-0.0059318542,0.056915283,0.0077400208,-0.036834717,-0.050048828,0.019897461,-0.034057617,0.019165039,-0.010253906,0.0040779114,-0.048736572,0.03201294,0.06512451,0.010322571,-0.014274597,-0.009353638,-0.050354004,-0.029678345,-0.045562744,0.0043792725,-0.0022640228,0.0026874542,0.039215088,-0.029785156,-0.04586792,0.0018386841,0.018295288,0.014785767,0.05670166,0.009353638,0.0059165955,0.003709793,0.0135650635,-0.03778076,0.03717041,0.026565552,0.03515625,-0.036895752,-0.031280518,0.022872925,0.052368164,-0.016296387,0.0005455017,-0.022415161,0.007774353,0.0009069443,0.020889282,0.025360107,-0.0079574585,-0.02180481,-0.025283813,-0.0049819946,0.03805542,0.019348145,-0.027557373,-0.042114258,-0.07672119,0.045959473,0.050048828,0.033569336,-0.00087308884,0.018951416,-0.01991272,-0.023025513,-0.06561279,0.052246094,0.076660156,-0.027374268,-0.015296936,0.013496399,-0.008918762,-0.038238525,-0.014816284,-0.013145447,-0.024093628,-0.024108887,0.0050849915,-0.03640747,0.012054443,0.014839172,0.035614014,0.05206299,-0.014457703,-0.06762695,-0.03970337,0.010894775,0.007949829,-0.028411865,0.0038528442,-0.0039367676,0.01675415,0.032562256,-0.00044441223,0.022613525,-0.0018920898,0.019683838,-0.008178711,-0.017807007,-0.03274536,-0.0135650635,0.011497498,-0.000027060509,-0.06829834,0.018417358,0.008674622,0.06695557,-0.046813965,0.031219482,0.001036644,0.01247406,0.062561035,0.0005950928,-0.058410645,-0.00010788441,0.011436462,0.039916992,0.043182373,0.00075244904,-0.012863159,-0.004714966,0.06842041,-0.021865845,0.001791954,0.025360107,0.026031494,0.044799805,-0.0037269592,-0.062072754,-0.03491211,-0.02619934,-0.028411865,0.018844604,-0.022476196,0.01687622,-0.011444092,0.0149383545,-0.017791748,0.0036411285,-0.037963867,0.009666443,-0.011650085,0.0005145073,-0.013702393,-0.015136719,0.0058403015,0.025177002,-0.017196655,0.0058670044,0.032836914,0.0064201355,-0.019714355,-0.03579712,-0.024597168,-0.018310547,-0.007507324,0.024124146,0.030380249,0.017196655,0.041503906,-0.05532837,0.03152466,0.031799316,0.015106201,0.028915405,-0.010757446,0.013038635,-0.05618286,-0.05307007,-0.024749756,-0.05178833,0.03463745,0.018936157,-0.0045318604,0.05429077,-0.008392334,-0.0030021667,-0.025039673,0.03643799,-0.034606934,-0.0021209717,0.052642822,-0.027664185,-0.038269043,0.0050354004,0.0052757263,0.014892578,0.03564453,0.021652222,0.011047363,0.07092285,0.044525146,-0.008651733,0.012931824,0.01663208,0.022888184,-0.009597778,-0.04333496,-0.03704834,-0.009651184,0.029022217,-0.021011353,-0.021972656,-0.05532837,0.052886963,0.025009155,0.06964111,0.010917664,0.021087646,0.0368042,-0.010528564,0.010627747,-0.017822266,-0.0011959076,-0.026550293,-0.047027588,0.040985107,-0.023895264,-0.0065956116,-0.012039185,0.025146484,-0.013755798,0.0154953,-0.03378296,0.05105591,0.00957489,-0.0008368492,0.024475098,0.00017523766,0.052886963,0.04458618,-0.047576904,0.026428223,0.021743774,-0.034210205,0.0056419373,0.04031372,-0.0050239563,-0.027557373,-0.038909912,-0.031066895,0.011451721,-0.0013284683,-0.049621582,-0.006389618,0.009918213,0.0096206665,0.013160706,-0.0064735413,-0.030349731,0.022201538,-0.017227173,-0.06652832,-0.017913818,-0.040496826,0.019607544,0.05517578,-0.0135269165,0.00504303,0.008911133,-0.0068855286,0.005672455,0.02482605,0.0052108765,-0.0022258759,-0.05783081,0.020645142,0.0039634705,0.012527466,0.03074646,0.042297363,0.04272461,0.014724731,0.035858154,0.01158905,-0.038604736,-0.052093506,0.013244629,-0.03878784,0.0011577606,0.016708374,-0.024093628,-0.0027866364,-0.018844604,-0.02670288,-0.025787354,0.0055999756,-0.036956787,0.019973755,0.043640137,-0.028259277,-0.027755737,-0.059265137,-0.020339966,-0.0056533813,0.07489014,0.02835083,0.014404297,-0.05709839,-0.014839172,0.025527954,0.008781433,0.015449524,-0.015090942,-0.00021147728,-0.017211914,-0.026245117,-0.023544312,-0.0289917,0.013031006,0.00019443035,-0.02166748,0.02545166,-0.026229858,0.0118637085,-0.012275696,0.01108551,0.038269043,-0.021636963,0.008132935,-0.02949524,0.0287323,-0.0010061264,-0.012290955,-0.06304932,0.058624268,0.013282776,0.03237915,-0.044281006,0.0067214966,-0.0031375885,0.00737381,0.0021266937,-0.006088257,-0.005519867,-0.0007982254,-0.05154419,-0.07446289,0.04019165,-0.020950317,0.032470703,0.012054443,0.009613037,0.033325195,-0.0054893494,-0.009262085,0.022720337,-0.02217102,0.004070282,-0.024276733,-0.046539307,-0.0020217896,-0.012145996,-0.018661499,0.021881104,-0.014381409,0.011764526,-0.004047394,-0.016967773,0.04348755,0.006198883,-0.0007004738,0.01676941,0.0009160042,0.005039215,0.041870117,0.007499695,-0.039001465,0.026489258,-0.0056762695,-0.008369446,-0.008392334,0.037902832,0.021469116,-0.004081726,-0.0052757263,-0.017913818,-0.021057129,-0.022598267,-0.0029277802,0.0021533966,0.031204224,0.0040664673,-0.038635254,0.03491211,0.022338867,-0.026367188,-0.007858276,0.005332947,0.02166748,-0.029449463,0.0127334595,0.021606445,0.052459717,-0.030532837,-0.009147644,0.009880066,0.010467529,0.02003479,0.024642944,-0.01524353,0.016479492,-0.02482605,-0.0025043488,0.004699707,-0.028381348,0.006214142,-0.0038032532,0.021987915,0.026031494,0.024749756,-0.03060913,-0.02420044,-0.0072021484,-0.014335632,-0.023269653,0.032073975,0.028945923,0.013496399,-0.024978638,0.011703491,0.019714355,-0.03579712,-0.019699097,-0.0068969727,0.059265137,-0.0071754456,-0.00069379807,0.015625,0.0064849854,0.035949707,-0.071777344,-0.004962921,0.009613037,0.01184845,-0.017242432,-0.02798462,-0.030899048,0.0031719208,0.039733887,-0.004211426,0.012107849,0.028152466,-0.0066604614,0.0006723404,0.01763916,-0.006706238,-0.016525269,-0.024108887,-0.0362854,0.0033798218,-0.004676819,0.010101318,-0.023284912,0.0028972626,-0.02180481,-0.033081055,0.012184143,-0.0048065186,-0.004245758,-0.0013303757,0.024368286,0.021148682,0.0026283264,0.016311646,-0.01436615,-0.006668091,-0.005924225,0.007858276,0.02772522,-0.039031982,0.030670166,-0.03161621,-0.019332886,0.004600525,0.017913818,0.028869629,0.019195557,-0.0037498474,0.034088135,-0.040802002,0.042907715,-0.042388916,-0.00045108795,0.004627228,-0.040527344,-0.011695862,-0.016647339,-0.016906738,0.025527954,-0.021514893,-0.011703491,-0.029281616,-0.038391113,-0.0079574585,-0.037841797,0.011291504,0.037902832,0.03741455,-0.028015137,0.0021457672,0.0039749146,0.0003707409,-0.015777588,0.0070762634,-0.0050849915,0.021499634,0.022277832,0.0030498505,-0.024520874,-0.03540039,0.016189575,0.009902954,-0.03164673,-0.049346924,-0.026626587,0.006717682,-0.016159058,-0.0065689087,-0.013877869,-0.01939392,0.0069618225,-0.049957275,0.0063552856,0.010307312,0.029022217,0.0152282715,-0.017150879,-0.0030155182,0.01486969,-0.023590088,0.034973145,-0.012290955,-0.00819397,-0.04147339,-0.00090932846,0.049041748,0.015777588,-0.004878998,-0.014007568,-0.006843567,-0.023208618,-0.05279541,-0.010375977,0.0047798157,-0.008102417,0.004337311,0.0017938614,-0.0473938,-0.016143799,-0.031951904,0.0018987656,0.013053894,0.012145996,0.02267456,0.0009431839,0.0021266937,-0.0021076202,-0.0124435425,-0.037322998,0.017349243,0.011177063,0.012519836,0.009544373,0.053497314,0.01309967,0.00121212,0.0033454895,-0.005622864,0.0072288513,-0.008766174,0.011894226,-0.001739502,0.006134033,-0.0034885406,-0.01991272,-0.027038574,0.0015563965,0.06958008,-0.010391235,0.000036597252,-0.014923096,-0.013465881,0.018859863,0.024459839,-0.05041504,0.0006637573,-0.03475952,0.014640808,-0.0088272095,0.022613525,0.00762558,0.013008118,-0.007774353,-0.06390381,-0.00894165,0.007724762,-0.01260376,-0.066711426,-0.018295288,-0.07647705,0.0012016296,-0.014221191,-0.022994995,-0.0012817383,0.008552551,-0.020233154,-0.08520508,-0.015823364,0.04953003,0.0066375732,0.020721436,-0.031799316,0.025848389,0.024597168,-0.028808594,-0.028656006,0.03463745,-0.03050232,-0.015304565,-0.02798462,0.02784729,-0.02468872,-0.02571106,0.0066833496,0.014785767,0.012245178,-0.016860962,0.008666992,-0.010787964,0.008293152,-0.0041503906,0.009643555,-0.010627747,-0.019821167,0.026931763,-0.053466797,0.018112183,0.023834229,0.0021018982,0.020309448,0.03427124,0.027191162,-0.045013428,-0.01727295,0.03778076,0.012138367,0.030532837,-0.03741455,0.055908203,-0.00013363361,-0.016494751,0.029708862,-0.011146545,-0.022872925,-0.051879883,-0.026931763,0.004875183,0.008544922,0.023864746,-0.021453857,0.0024776459,0.017074585,-0.001906395,0.008308411,-0.0073547363,-0.029052734,-0.004917145,0.0044937134,-0.0035247803,0.0022602081,-0.0072021484,0.028869629,0.01638794,0.031555176,0.0051345825,-0.004737854,0.026977539,0.012962341,-0.026382446,0.014442444,0.014137268,0.013313293,0.0289917,0.018188477,0.017807007,-0.051940918,-0.016448975,-0.03704834,-0.011177063,-0.0052871704,-0.016693115,-0.0023231506,-0.005771637,0.0032653809,0.0050086975,-0.022155762,0.02053833,-0.05307007,-0.02357483,-0.011726379,-0.019470215,0.0064811707,0.0068855286,0.0067863464,0.00919342,-0.0021533966,0.042999268,0.00831604,-0.007865906,0.018127441,0.033172607,0.0039978027,-0.03805542,0.012924194,-0.005153656,0.0037708282,0.011177063,-0.019836426,0.015975952,0.03744507,-0.0078125,0.0007786751,-0.006427765,0.020950317,-0.013282776,0.022216797,0.0018005371,0.017471313,-0.017425537,0.030456543,-0.04574585,0.011642456,0.021820068,-0.013572693,0.008926392,-0.016403198,-0.030929565,0.013847351,0.010475159,-0.025497437,0.041748047,-0.0035209656,0.024642944,-0.032806396,-0.020965576,-0.011688232,-0.022659302,-0.014167786,0.034301758,-0.0062065125,0.009269714,0.019470215,-0.030853271,0.04611206,-0.043182373,0.021026611,-0.00089883804,0.0056037903,-0.012626648,-0.02180481,-0.015357971,-0.0077209473,0.0038528442,0.0011978149,0.003025055,0.040618896,0.019210815,0.028259277,0.041290283,0.023742676,-0.0013246536,-0.038024902,-0.024124146,0.0036010742,-0.025054932,0.0077209473,-0.013366699,0.04940796,0.035308838,0.0020160675,0.032714844,0.033721924,0.03152466,0.00869751,0.00995636,0.010131836,0.010597229,-0.014656067,0.03050232,-0.0023040771,0.036621094,-0.022979736,0.015640259,0.005115509,0.033233643,-0.03338623,0.027038574,0.07067871,0.016677856,-0.011444092,0.03668213,-0.013671875,-0.002532959,-0.012954712,-0.018478394,0.048675537,-0.0050735474,0.03817749,0.0390625,0.01209259,-0.0056419373,0.031707764,-0.0129470825,-0.012481689,0.06762695,0.025817871,-0.018981934,-0.011642456,-0.010627747,0.00076293945,-0.053009033,-0.018478394,0.017318726,0.009178162,0.008338928,0.0026454926,-0.010070801,-0.020965576,0.0231781,0.020584106,0.0031051636,-0.0112838745,0.02178955,0.033966064,0.011520386,0.017196655,0.0005774498,0.009178162,-0.027130127,-0.011505127,0.019348145,0.023483276,-0.0040130615,-0.0049476624,0.017974854,0.012504578,0.05303955,0.038208008,-0.0053634644,-0.008079529,0.020767212,0.0064048767,0.0019197464,0.049194336,0.027374268,0.004360199,0.025650024,0.03652954,0.025421143,-0.044433594,0.018798828,-0.0037574768,0.015449524,-0.0029335022,-0.007461548,0.004837036,-0.0087509155,0.022720337,0.0022525787,-0.0052833557,0.03338623,0.022994995,0.004333496,-0.0033226013,-0.0020103455,0.020751953,-0.01247406,-0.0079956055,0.01158905,-0.012992859,0.021133423,0.017852783,0.034301758,-0.026000977,0.025863647,-0.014602661,-0.026229858,-0.0049209595,0.0132751465,-0.039123535,0.0010385513,-0.013137817,-0.011077881,-0.032104492,0.0044136047,0.014671326,-0.0033569336,0.01852417,0.010040283,0.0023899078,-0.0045051575,0.03540039,0.0178833,-0.00082302094,-0.006706238,-0.016983032,0.02848816,0.029571533,-0.01108551,0.0102005005,-0.025421143,-0.0058784485,0.012763977,-0.02734375,-0.0002462864,-0.0037002563,-0.023544312,-0.0317688,0.008491516,0.043182373,0.02293396,0.038604736,-0.0116119385,-0.022155762,0.0043563843,0.032989502,0.005809784,-0.002161026,-0.012039185,0.00554657,-0.031036377,0.04434204,0.0317688,-0.0014753342,0.013847351,-0.010658264,-0.015586853,0.0099105835,-0.021224976,0.017684937,-0.010971069,0.00315094,-0.017913818,0.022872925,-0.021606445,-0.031219482,-0.00087308884,-0.021057129,-0.017440796,-0.022415161,0.005935669,0.0059165955,0.022979736,0.034698486,0.016143799,-0.020065308,0.06555176,-0.02204895,0.03933716,-0.012748718,0.0013980865,0.043823242,0.025314331,0.033111572,0.024871826,0.01637268,-0.03286743,0.016906738,0.04046631,0.01725769,0.020751953,-0.0033607483,-0.029373169,0.0390625,-0.010612488,0.024978638,-0.004043579,-0.002275467,0.017166138,-0.007850647,-0.006790161,0.00071048737,0.002046585,0.008544922,0.039886475,-0.03463745,-0.010108948,-0.02432251,-0.0152282715,0.024459839,0.0015249252,0.0036201477,0.011489868,-0.027694702,0.0109939575,-0.02923584,-0.014694214,0.0038757324,0.019851685,-0.03515625,-0.014587402,0.0035419464,0.01979065,-0.039093018,0.02734375,0.01525116,-0.011817932,0.0090789795,0.03881836,-0.0010242462,0.042755127,-0.016845703,0.02281189,0.043823242,-0.0046043396,-0.009376526,0.016723633,0.008010864,-0.01348114,0.0028419495,0.031829834,-0.008674622,0.021560669,0.00207901,-0.0039520264,0.012641907,0.009048462,-0.009849548,-0.00047039986,-0.015304565,-0.00774765,0.013046265,0.027374268,-0.0052871704,0.010299683,-0.0025749207,-0.019058228,-0.015792847,0.031951904,0.009384155,-0.03237915,0.0026054382,0.009170532,0.02947998,-0.02508545,-0.012886047,-0.007534027,-0.03302002,0.023239136,0.02670288,-0.0004351139,0.005558014,-0.019104004,-0.00075531006,0.04135132,0.011451721,0.017150879,0.0032596588,0.00034070015,0.021240234,-0.024932861,-0.0020694733,-0.004837036,-0.00040268898,0.010269165,0.0047798157,0.00065517426,-0.038848877,0.030792236,-0.008903503,0.017089844,-0.00003093481,-0.01537323,0.020523071,-0.018295288,-0.008277893,0.00242424,0.014480591,-0.016113281,-0.019302368,-0.039489746,0.023590088,0.05340576,-0.019729614,-0.013557434,0.015396118,0.021148682,0.028656006,0.03111267,-0.0011024475,0.042663574,0.02217102,-0.035308838,-0.022125244,0.02267456,-0.013053894,-0.044555664,0.010543823,-0.0065994263,0.00072813034,0.0049819946,0.019165039,-0.0065689087,-0.029922485,-0.014274597,-0.010375977,-0.025314331,0.009750366,-0.010025024,0.0073013306,-0.03930664,-0.0062332153,0.010635376,-0.0181427,-0.029022217,-0.028335571,0.0027122498,-0.015045166,-0.05380249,0.0062942505,-0.01763916,0.0064926147,-0.021316528,0.0023059845,-0.0034427643,0.03277588,-0.018997192,0.004798889,0.022583008,0.027374268,0.020812988,0.008651733,0.03161621,-0.022003174,-0.026733398,-0.013572693,-0.0036945343,-0.023620605,0.016738892,-0.0063056946,0.03390503,0.019119263,0.012191772,0.003730774,-0.012542725,-0.0053482056,0.002746582,-0.038848877,-0.030380249,0.018814087,0.023071289,-0.0068359375,-0.012268066,0.051513672,-0.030288696,-0.011184692,0.028060913,0.0473938,0.0031909943,0.027297974,-0.013137817,-0.006576538,-0.014045715,0.009361267,-0.004623413,0.012451172,0.010047913,0.0036334991,-0.012496948,-0.0048713684,0.023742676,-0.014762878,0.0031719208,0.02784729,-0.003955841,-0.013832092,0.024139404,0.020339966,-0.0029201508,-0.0129852295,-0.008865356,0.02809143,0.030456543,0.011520386,-0.00091838837,0.00041937828,0.0119018555,-0.007217407,0.007194519,0.027664185,-0.023040771,-0.022491455,-0.016693115,-0.017959595,0.037231445,0.013633728,0.009262085,-0.0057678223,0.011741638,-0.018859863,-0.02468872,-0.0052337646,0.017150879,0.009185791,-0.011451721,-0.0024280548,-0.0049057007,0.015319824,-0.031982422,0.0056877136,-0.04827881,-0.03289795,-0.014328003,-0.02684021,0.016235352,0.02053833,-0.007801056,0.0056648254,0.0008587837,-0.00409317,-0.0053215027,0.026153564,-0.01878357,-0.011917114,0.021392822,0.014801025,-0.016799927,0.014831543,-0.004886627,-0.007572174,0.014381409,0.004463196,-0.0008993149,-0.02178955,0.02659607,-0.0045776367,-0.011940002,0.027435303,0.0026226044,0.013404846,-0.026046753,0.0040512085,-0.008857727,-0.007774353,0.02999878,-0.032440186,-0.02658081,0.019439697,-0.022827148,-0.02960205,0.0085372925,0.0317688,0.03378296,-0.013755798,0.03152466,-0.024520874,-0.013793945,0.0151901245,0.008621216,-0.020477295,-0.0037708282,0.046203613,0.00022172928,-0.0075416565,0.0007710457,-0.020477295,-0.023971558,-0.00223732,0.028442383,-0.0055885315,-0.014816284,0.020385742,0.012504578,0.0440979,0.0014486313,0.008872986,0.01852417,-0.0045204163,0.029418945,0.015701294,0.055603027,0.00605011,-0.030776978,0.011497498,-0.006149292,-0.021514893,-0.0013875961,-0.009338379,0.012878418,-0.04949951,0.01083374,-0.002313614,0.014389038,-0.019134521,0.016494751,-0.025344849,-0.00024819374,-0.026031494,-0.011199951,-0.03845215,0.016418457,0.039794922,0.0137786865,0.017166138,-0.0056877136,-0.02835083,0.010673523,0.04623413,-0.014259338,-0.028121948,0.0043144226,0.0076408386,-0.0006046295,0.018218994,0.0012521744,-0.013877869,-0.026428223,0.010643005,-0.008628845,-0.006877899,0.00041604042,0.023498535,0.00843811,-0.00092840195,-0.0038108826,0.027557373,0.006034851,0.006122589,0.008216858,-0.0043144226,0.02645874,0.031585693,-0.012374878,0.0151901245,0.023239136,-0.0390625,0.05419922,-0.0103302,0.023284912,-0.021011353,0.0050811768,-0.041503906,-0.0044288635,-0.016052246,0.005001068],"createdAt":"2026-04-18T18:32:02.717Z","updatedAt":"2026-04-23T04:00:38.756Z","lastSeenAt":"2026-04-23T04:00:38.756Z","tsv":"'/api':190 '/api/v1/generate/resource/126':48 '/docs':188 '/pricing':189 '/readme':192 '0.02':110,155 '0x8335':143 '126':81 '20000':138 '2913':144 '402':93 '6':151 'Base network API' 'USDC API' 'access':6,21,38,228 'actual':82 'advertis':99,161 'agent':233 'ai':68,115 'analyt':67,114 'api':5,20,37,58,108,177,227 'avail':244 'base':8,23,146,173 'broad':101 'call':107 'categori':59 'caution':239 'challeng':94,129 'classif':119 'clear':51 'connect':198 'consist':156 'content':204 'contract':142 'cover':113 'data':66,122 'decim':152 'describ':78 'descript':215 'document':76,183,242 'embed':120 'endpoint':32,85,133,221,237 'equal':154 'exact':169 'exampl':212 'exist':77 'extrem':185 'financ':71 'finance/crypto':121 'generic':230 'homepag':65 'howev':126 'http-post' 'infer':116 'infrastructur':73 'json-response' 'key':178 'learn':70 'limit':181 'list':60,224 'live':87 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':69 'made':165 'map':52 'maxamountrequir':136 'micropayment API' 'name':57 'network':9,24,174 'no-api-key' 'openapi':208 'page':193 'paid':10,25 'paid API' 'particular':219 'path':47 'pay':105 'pay-per-cal':104 'pay-per-call API' 'pay-per-request' 'payabl':3,18 'payment':42,163 'per':12,27,106,111 'per-request':11,26 'premium':4,19,36,226 'premium API' 'price':162 'produc':222 'prompt':200 'protocol':43 'provid':35,63,96 'rate':180 'render':195 'represent':153 'request':13,28,112 'request/response':211 'requir':182 'resourc':46,80,220 'return':83,89 'schema':209 'scheme':170 'sentiment':117 'servic':125 'site':98,159 'spars':186 'specif':45,132 'specifi':134 'substant':203 'suit':102 'summar':118 'titl':225 'treat':235 'uninform':232 'unit':139 'usdc':15,30,141,149 'usdc-on-base' 'util':124 'valid':91 'via':39,166 'wallet':199 'web3':72 'x402':2,17,41,92,128,168 'x402 API' 'x402-payable':1,16 'x402-payment'","prices":[{"id":"8f962253-79e2-4d0d-9a3f-6e17a16e7c21","listingId":"413dd398-74a1-4c1c-9483-06a04b8102bd","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/generate/resource/126","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:02.717Z"}],"sources":[{"listingId":"413dd398-74a1-4c1c-9483-06a04b8102bd","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/126","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:02.717Z","lastSeenAt":"2026-04-23T04:00:38.756Z"}],"details":{"listingId":"413dd398-74a1-4c1c-9483-06a04b8102bd","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/126\n# Returns 402 with x402 challenge; attach X-PAYMENT header with valid USDC payment on Base to access.","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 USDC units on Base","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/126"},{"claim":"The provider advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The site lists API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to an unspecified premium resource via x402 micropayment","Demonstrating x402 payment protocol integration on Base network","Agent-driven API consumption without API key management"],"bestFor":["Developers experimenting with x402 payment protocol on Base","Agents that can handle x402 USDC payments natively","Use cases where keyless, pay-per-request access is preferred"],"notFor":["Production workloads requiring well-documented API contracts and SLAs","Users who need to understand exact response format before paying","Anyone needing free or fiat-only payment options"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:01:58.724Z"},"updatedAt":"2026-04-23T04:00:38.756Z"}}