{"id":"507a8cb0-79dc-4981-a89b-cb1f840f0216","shortId":"3HZUMb","kind":"x402","title":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-protocol API marketplace that hosts a collection of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and general utility services. All endpoints are pay-per-request with no API keys, no rate limits, and no upfront commitments — payment is handled inline via the x402 payment header using USDC on the Base network.\n\nThe specific endpoint at `/api/v1/generate/resource/169` is listed as \"Premium API Access\" and accepts POST requests. Its x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The site's landing page confirms a uniform $0.02/request pricing across all listed endpoints.\n\nThe platform advertises categories including 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 (geocoding, validation, conversion, generation). However, documentation pages beyond the landing page returned only a \"Connect wallet\" prompt with no substantive content, so the actual behavior, input/output schemas, and data sources behind each endpoint remain undocumented.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-base","no-api-key","data-analytics","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","geocoding","utility-services"],"categories":["llm","data","finance","utility"],"synonyms":["low payment fee","x402 api","pay per call api","micropayment api","usdc api","base network api","cheap api","no-auth api"],"warnings":["No documentation available — all doc pages return only 'Connect wallet' with no content","No input or output schema provided; unclear what this endpoint actually does","'Premium API Access' is a generic label with no description of functionality","No OpenAPI spec, no examples, no error handling documentation"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/169","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/169","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no input/output schema, no examples, and the \"Premium API Access\" description is entirely generic. The docs, pricing, and README pages all returned only a wallet-connect prompt with no useful content.","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":"2026-04-18T22:51:05.208Z","embedding":[-0.026870728,-0.02508545,0.053619385,0.014701843,0.010787964,-0.027923584,-0.030548096,0.019744873,0.059051514,-0.057128906,0.030227661,-0.05117798,-0.035888672,-0.035583496,-0.017181396,0.014694214,-0.023330688,0.00019562244,-0.045684814,0.04107666,0.036010742,-0.0042495728,-0.026245117,0.025726318,-0.0066490173,-0.010887146,0.016159058,0.0062561035,-0.011520386,-0.0368042,0.020217896,-0.028549194,-0.0071411133,0.021530151,-0.0020179749,-0.0037403107,0.007534027,0.037231445,0.029052734,0.004688263,-0.008071899,-0.058441162,0.017440796,-0.005897522,-0.04953003,0.001285553,0.022537231,-0.03643799,-0.014083862,-0.0024719238,-0.029815674,-0.0140686035,-0.015930176,0.0013189316,-0.011245728,0.005882263,-0.010276794,-0.009429932,-0.0006804466,0.021728516,0.0071907043,-0.045898438,-0.00006586313,0.016342163,-0.0002989769,0.055511475,0.0027256012,0.03753662,-0.00592041,0.06488037,0.022705078,0.038208008,0.047668457,0.01259613,0.010635376,-0.014816284,-0.021896362,0.061187744,-0.02784729,-0.015991211,-0.00207901,-0.0024986267,-0.05331421,-0.025482178,-0.007911682,-0.06933594,-0.010307312,0.01852417,-0.040924072,0.050445557,-0.06347656,-0.019500732,-0.016708374,0.018798828,-0.010696411,0.0076446533,-0.0021533966,0.015083313,0.008125305,0.0259552,0.000289917,-0.050811768,0.016204834,0.035583496,0.04019165,0.02482605,0.013450623,0.020568848,-0.0014371872,-0.01763916,-0.035095215,0.0000104904175,-0.022354126,-0.012107849,0.013648987,-0.006427765,-0.019744873,0.017227173,-0.03149414,0.012435913,-0.049957275,0.059570312,0.020568848,0.00034713745,0.0020179749,-0.05303955,-0.023849487,0.009422302,-0.03543091,-0.023773193,0.021575928,0.015609741,0.023513794,-0.023468018,-0.030792236,-0.0014696121,-0.0099487305,-0.028900146,-0.061431885,-0.016525269,0.035949707,-0.03048706,0.01600647,0.027023315,-0.09112549,-0.016662598,-0.051757812,0.012207031,-0.025375366,-0.00945282,0.017868042,0.02708435,-0.0317688,-0.038024902,-0.012084961,-0.04019165,-0.020324707,0.028945923,-0.010437012,0.0340271,-0.015274048,0.029541016,0.0043144226,0.0022258759,0.008575439,0.036956787,-0.008140564,-0.107055664,-0.082214355,-0.034088135,-0.0012769699,-0.0138549805,-0.025405884,0.00034189224,0.0096588135,-0.08666992,-0.038726807,-0.014099121,0.022354126,-0.036315918,-0.00207901,-0.021438599,-0.004447937,-0.009895325,-0.03982544,-0.017974854,-0.02204895,0.051635742,0.020202637,0.026763916,0.02394104,0.002281189,0.07171631,0.035461426,0.0024986267,-0.035095215,0.011375427,-0.013305664,0.04949951,0.003730774,0.021255493,-0.028030396,0.051696777,0.047729492,-0.0016584396,-0.012535095,-0.0034599304,-0.040649414,-0.03237915,-0.036621094,0.017730713,0.017242432,-0.008972168,0.026290894,-0.02255249,-0.02810669,-0.0065612793,0.021621704,0.012313843,0.070373535,-0.0029296875,0.014190674,0.021881104,0.008430481,-0.03793335,0.051208496,0.022415161,0.014503479,-0.023422241,-0.030761719,0.040039062,0.041229248,-0.032409668,0.0018367767,-0.025817871,0.018463135,0.008522034,0.006591797,0.018310547,-0.016174316,-0.019699097,-0.033294678,-0.016952515,0.026885986,0.013572693,-0.018218994,-0.047027588,-0.07867432,0.046173096,0.046722412,0.028457642,-0.007637024,0.005592346,-0.011207581,0.0033416748,-0.07055664,0.043884277,0.074035645,0.008323669,-0.016448975,0.01751709,0.00856781,-0.023452759,0.0024528503,-0.005794525,-0.015945435,-0.022994995,0.023345947,-0.05331421,-0.0064201355,0.025939941,0.017318726,0.044952393,-0.031082153,-0.058654785,-0.01890564,0.009269714,0.006690979,-0.03967285,0.00258255,-0.007896423,0.013946533,0.04949951,0.013755798,0.013648987,-0.0067367554,0.020553589,-0.009422302,-0.0061569214,-0.03793335,-0.010955811,0.011924744,0.006565094,-0.062561035,0.01939392,0.0015459061,0.064453125,-0.047210693,0.024810791,-0.008384705,0.035705566,0.03262329,0.0012893677,-0.050109863,-0.010597229,0.024978638,0.037109375,0.040496826,0.029846191,-0.010818481,-0.011123657,0.05886841,-0.008026123,-0.013031006,0.0059776306,0.02758789,0.03970337,-0.00013029575,-0.053375244,-0.041900635,0.009063721,-0.023773193,0.03842163,-0.02772522,0.02192688,-0.0075302124,0.009857178,-0.018112183,0.003370285,-0.047973633,0.015899658,-0.010765076,0.014625549,-0.0035076141,-0.020858765,-0.0048942566,0.009597778,-0.012138367,-0.004825592,0.026123047,0.0005197525,-0.014221191,-0.02859497,-0.03237915,-0.01928711,-0.01626587,0.012535095,0.035736084,0.015045166,0.035003662,-0.034729004,0.000013589859,0.018707275,-0.0013580322,0.02659607,-0.0074882507,0.007408142,-0.05621338,-0.057128906,-0.02583313,-0.038848877,0.025665283,0.027694702,-0.0059051514,0.05154419,-0.015914917,-0.01940918,-0.022598267,0.024780273,-0.035827637,-0.006755829,0.041778564,-0.01134491,-0.047180176,0.007980347,-0.0053367615,0.0026302338,0.03933716,0.014190674,0.005710602,0.07897949,0.019012451,0.016647339,0.006500244,0.023971558,0.029464722,0.001830101,-0.021408081,-0.041412354,-0.011627197,0.028305054,-0.04144287,-0.025161743,-0.06567383,0.06173706,0.027816772,0.073913574,-0.00060749054,0.01210022,0.04296875,-0.016693115,0.0146484375,-0.018447876,-0.0259552,-0.027114868,-0.034851074,0.022216797,0.003063202,0.0046958923,-0.029785156,0.026168823,0.00000333786,0.016662598,-0.022064209,0.05340576,-0.0077590942,0.0076904297,-0.000056147575,0.004512787,0.05355835,0.046173096,-0.046783447,0.01260376,0.01777649,-0.033569336,-0.01436615,0.04159546,0.001625061,-0.029754639,-0.062286377,-0.03125,-0.015686035,-0.017028809,-0.047424316,-0.013763428,0.0022659302,0.026428223,0.029281616,-0.0026226044,-0.011779785,0.010246277,-0.0031147003,-0.06317139,-0.0015850067,-0.052764893,-0.0016536713,0.04019165,-0.030929565,-0.014160156,-0.014282227,-0.0127334595,0.0000063180923,0.019851685,0.019897461,-0.007820129,-0.05142212,0.03717041,0.0071640015,0.009208679,0.03616333,0.03945923,0.058776855,0.0093688965,0.040985107,0.011459351,-0.03378296,-0.047088623,0.010414124,-0.036193848,-0.014099121,-0.006038666,-0.011520386,-0.005630493,-0.009513855,-0.04537964,-0.020263672,0.027435303,-0.025680542,-0.0017871857,0.022247314,-0.042816162,-0.023925781,-0.053253174,-0.023071289,-0.023239136,0.08026123,0.025939941,-0.0059814453,-0.053009033,-0.021697998,0.026184082,-0.0026187897,0.032318115,-0.015930176,-0.0066452026,-0.012794495,-0.040100098,-0.023452759,-0.03491211,0.039093018,-0.0033988953,-0.0115737915,0.005470276,-0.000910759,0.016525269,-0.009811401,0.0063209534,0.030578613,-0.016403198,-0.0082473755,-0.028625488,0.011131287,0.00894928,0.010017395,-0.03363037,0.05532837,0.0058021545,0.05593872,-0.031082153,-0.0002104044,0.00039291382,0.022155762,0.016784668,-0.025756836,-0.02128601,-0.005077362,-0.05303955,-0.06750488,0.036621094,-0.031677246,0.025939941,0.019256592,0.0064849854,0.035217285,-0.030334473,0.008117676,0.028442383,-0.034698486,-0.016067505,-0.02583313,-0.035186768,-0.010108948,-0.0040893555,-0.022476196,0.009216309,-0.016693115,0.0065994263,-0.021408081,-0.030227661,0.030654907,0.028198242,-0.015274048,0.041534424,-0.0035572052,0.01979065,0.053863525,0.006855011,-0.032165527,0.021530151,-0.004009247,0.0053863525,0.0004930496,0.050445557,0.03564453,-0.018447876,-0.015945435,-0.005268097,-0.003068924,-0.024917603,-0.01448822,0.007888794,0.016571045,0.007446289,-0.008621216,0.015274048,0.0118255615,-0.015541077,-0.023910522,0.025924683,0.016281128,-0.039916992,0.020507812,0.022201538,0.05419922,-0.027786255,0.003967285,0.0093307495,0.055786133,0.029037476,0.0068244934,-0.023330688,0.018463135,-0.029571533,-0.00035357475,-0.0047416687,-0.006931305,0.021057129,0.006198883,0.010368347,0.026184082,0.019989014,-0.025894165,-0.0418396,0.013504028,-0.0055732727,-0.02204895,0.030090332,0.014923096,0.008262634,-0.03149414,0.023757935,0.024520874,-0.02571106,-0.014282227,-0.009567261,0.05618286,0.0012483597,-0.0028209686,0.02154541,0.006351471,0.02319336,-0.057525635,-0.00819397,0.011695862,0.016464233,-0.022750854,-0.04827881,-0.044830322,-0.0030574799,0.03591919,0.016159058,0.015838623,0.021514893,-0.0028095245,-0.007381439,0.022262573,-0.0071029663,-0.0043525696,-0.013145447,-0.06185913,-0.021591187,-0.0069389343,0.0022144318,-0.037231445,0.011375427,-0.021438599,-0.030654907,0.0071144104,-0.007736206,-0.0035247803,-0.011909485,0.01574707,0.046417236,-0.006313324,0.01940918,-0.01864624,-0.01727295,-0.007575989,0.003643036,0.029876709,-0.042633057,0.027038574,-0.009155273,-0.013137817,0.0024337769,0.030166626,0.015274048,0.019119263,0.0033607483,0.03378296,-0.037475586,0.042175293,-0.027664185,0.016738892,-0.0008893013,-0.0362854,-0.012931824,-0.028930664,-0.011764526,0.036132812,-0.024536133,0.0027656555,-0.027252197,-0.027038574,0.0016107559,-0.04711914,0.0072517395,0.028625488,0.04473877,-0.027511597,0.000995636,0.01940918,0.010635376,-0.012550354,0.0027656555,-0.004055023,0.015586853,0.02545166,-0.013923645,-0.017669678,-0.025421143,0.0010375977,0.00047898293,-0.046051025,-0.06378174,-0.018920898,0.004005432,-0.0011663437,0.0023231506,-0.020431519,-0.028411865,-0.009719849,-0.035888672,0.01878357,0.000025689602,0.02331543,0.0184021,-0.023498535,0.009376526,0.022369385,-0.029037476,0.026611328,-0.0030231476,-0.019424438,-0.05682373,0.0088272095,0.036865234,0.015151978,-0.011154175,-0.038024902,0.0033054352,-0.032318115,-0.05404663,0.00049209595,-0.0017499924,-0.004573822,-0.00006532669,-0.007358551,-0.04714966,-0.016525269,-0.036987305,-0.003944397,0.023208618,0.020874023,0.0019273758,-0.0023117065,0.0061569214,-0.002696991,-0.0070533752,-0.029632568,0.008987427,0.011665344,0.0025291443,0.01751709,0.040100098,0.0014228821,-0.0021781921,-0.007881165,0.00048351288,0.030822754,-0.010505676,0.009147644,-0.0067634583,0.009063721,-0.006099701,-0.016220093,-0.030838013,0.0019006729,0.06347656,0.0016212463,0.012016296,-0.000028669834,-0.010803223,0.007549286,0.036468506,-0.04788208,0.0012969971,-0.03353882,0.02204895,-0.011451721,0.024536133,-0.00065660477,0.0063323975,-0.019378662,-0.04937744,-0.0020656586,0.010047913,0.014595032,-0.06561279,-0.032562256,-0.06173706,0.001666069,-0.029434204,-0.033477783,-0.0020713806,0.008972168,-0.025680542,-0.08081055,-0.0021324158,0.06567383,-0.010147095,0.021270752,-0.010917664,0.018341064,0.039398193,-0.019195557,-0.012741089,0.016433716,-0.020599365,-0.0151901245,-0.018508911,0.038604736,-0.00806427,-0.015472412,0.0103302,0.019378662,0.016311646,0.0076789856,0.025787354,-0.0132751465,0.017410278,0.0008716583,0.017684937,-0.0006184578,-0.008102417,0.029052734,-0.045043945,0.022491455,0.019561768,0.0046195984,0.0043754578,0.019485474,0.04348755,-0.04562378,-0.004348755,0.049926758,0.012893677,0.028518677,-0.025604248,0.046417236,0.015068054,-0.01739502,0.022354126,-0.0008277893,-0.022583008,-0.033721924,-0.037322998,0.030792236,-0.0019006729,0.014274597,-0.01878357,-0.016677856,0.033172607,0.008529663,-0.0101623535,-0.025054932,-0.011627197,-0.023422241,0.017120361,-0.0021953583,-0.008834839,0.013031006,0.01927185,0.027679443,0.03845215,-0.010147095,-0.005756378,0.014678955,0.03463745,-0.014823914,0.0043678284,0.02394104,0.010673523,0.0345459,0.028793335,0.02809143,-0.042053223,-0.015777588,-0.02696228,-0.022506714,0.008720398,-0.015792847,0.0047569275,0.00043225288,0.007534027,-0.010467529,-0.033813477,0.005836487,-0.05343628,-0.024871826,-0.0000346303,-0.010421753,0.016082764,0.007320404,0.007698059,-0.0054092407,-0.005027771,0.05203247,0.0021572113,-0.017501831,0.02558899,0.044525146,0.016525269,-0.036346436,-0.006904602,-0.025543213,-0.019104004,0.0016431808,-0.02571106,0.009338379,0.045654297,-0.018341064,0.0055885315,-0.0025863647,0.012969971,-0.005809784,0.006072998,0.009681702,0.0184021,-0.014312744,0.027359009,-0.051757812,0.0041923523,0.028060913,0.00459671,-0.0007739067,-0.038024902,-0.031799316,0.022247314,-0.009628296,-0.007843018,0.042877197,-0.0030021667,0.015853882,-0.021392822,-0.019851685,0.007949829,-0.0234375,-0.030303955,0.0287323,-0.017211914,-0.00035119057,0.0026493073,-0.022583008,0.02519226,-0.036621094,-0.0031700134,0.009780884,0.005592346,-0.019638062,-0.013679504,-0.013305664,0.012023926,-0.0060768127,-0.0016784668,0.00083875656,0.03778076,0.036010742,0.028930664,0.028411865,0.014312744,0.0068893433,-0.047424316,-0.011795044,-0.0035991669,-0.018707275,0.00957489,-0.03111267,0.03717041,0.03918457,0.007911682,0.029327393,0.028793335,0.038391113,0.0042800903,0.013717651,-0.013496399,0.027664185,-0.027191162,0.016220093,0.0032730103,0.046173096,-0.024887085,-0.00062561035,-0.0069084167,0.025909424,-0.020217896,0.026947021,0.064575195,0.027420044,-0.004085541,0.040771484,0.0023345947,0.006904602,-0.005760193,-0.026168823,0.041168213,-0.0050354004,0.04550171,0.019943237,0.008895874,0.000023007393,0.023468018,-0.025939941,-0.02330017,0.047180176,0.038909912,-0.01637268,-0.005138397,-0.009063721,0.0032043457,-0.03704834,-0.01789856,0.013702393,0.01789856,0.006980896,-0.023452759,-0.014801025,-0.02067566,0.016998291,0.012107849,-0.0050697327,-0.004611969,0.013656616,0.014816284,-0.002822876,0.036315918,-0.0055351257,0.03024292,-0.029083252,-0.016281128,0.012039185,0.015396118,0.00031399727,0.0008187294,0.024307251,0.015853882,0.04852295,0.02973938,-0.009666443,-0.00178051,0.006954193,0.01625061,0.0151901245,0.035888672,0.035980225,0.014205933,0.020568848,0.043670654,0.031829834,-0.025863647,0.006904602,-0.010910034,0.012626648,-0.008010864,-0.015029907,0.009887695,-0.008872986,0.00932312,0.008453369,-0.0022773743,0.03366089,0.024627686,-0.003753662,-0.0009536743,0.008934021,0.018676758,-0.0043525696,0.0037574768,0.014694214,-0.013877869,0.020965576,0.015686035,0.042175293,-0.025634766,0.02973938,0.00053071976,-0.026321411,-0.002243042,0.01939392,-0.04473877,-0.0006737709,-0.0011692047,-0.016998291,-0.027114868,0.009170532,0.02067566,-0.0036392212,0.02810669,0.004070282,-0.013160706,-0.005622864,0.03149414,0.010848999,-0.015686035,-0.011627197,-0.017318726,0.031143188,0.04232788,0.0050239563,0.002412796,-0.020324707,0.0071411133,0.010231018,-0.012962341,0.0021648407,0.007587433,-0.0070228577,-0.009765625,0.014160156,0.034729004,0.020812988,0.03640747,-0.015365601,-0.010986328,0.0012969971,0.028564453,0.012634277,-0.002363205,-0.0116119385,0.026504517,-0.027679443,0.0385437,0.030471802,0.006038666,0.025436401,-0.00667572,0.0069618225,0.008377075,-0.031066895,0.023391724,-0.010719299,0.0042915344,-0.007751465,0.026229858,-0.018081665,-0.030136108,0.003490448,-0.011672974,-0.028518677,-0.026489258,0.01838684,0.0021438599,0.022003174,0.041381836,0.028701782,-0.022155762,0.06817627,-0.013572693,0.04449463,-0.012145996,-0.012626648,0.06237793,0.029876709,0.029647827,0.011817932,0.0031032562,-0.032562256,-0.00957489,0.032958984,0.02746582,0.0104522705,0.005432129,-0.011871338,0.026245117,-0.015312195,0.029251099,0.0064926147,0.013343811,0.010467529,-0.008232117,-0.00818634,0.0047683716,0.0011148453,0.01689148,0.06665039,-0.023162842,0.001868248,-0.019836426,-0.013702393,0.03161621,0.00010240078,0.0039520264,-0.006641388,-0.031280518,0.011367798,-0.023544312,-0.013946533,0.009483337,0.026779175,-0.040893555,-0.020446777,0.01436615,0.02784729,-0.028274536,0.026428223,0.0115737915,-0.008338928,0.010612488,0.035858154,-0.007835388,0.03869629,-0.02053833,0.023651123,0.045837402,0.0066947937,-0.027923584,-0.0034828186,0.0023326874,-0.010650635,0.014625549,0.024887085,-0.0096588135,0.006576538,0.00096797943,0.0056495667,-0.012283325,0.0052986145,-0.016403198,0.013519287,-0.013252258,-0.0060920715,0.014122009,0.012252808,0.002298355,0.0043792725,-0.009338379,-0.013404846,-0.0036315918,0.022994995,0.021530151,-0.034576416,-0.004272461,0.016281128,0.017242432,-0.016098022,-0.015914917,-0.011894226,-0.029403687,0.01424408,0.030227661,-0.0016708374,0.012741089,-0.02015686,0.008796692,0.028320312,0.010864258,0.016967773,0.0034065247,-0.019256592,0.01235199,-0.022506714,-0.011924744,-0.019760132,-0.0087509155,0.013221741,0.024383545,-0.011985779,-0.024749756,0.020950317,-0.0053215027,0.020126343,-0.0063056946,-0.013587952,0.034484863,0.0032463074,-0.022140503,0.0137786865,0.025527954,-0.008018494,-0.006134033,-0.02218628,0.028060913,0.049621582,-0.02381897,-0.0006337166,0.0046958923,0.021392822,0.016555786,0.03326416,0.016662598,0.033996582,0.012886047,-0.018920898,-0.031341553,0.023025513,-0.012802124,-0.04006958,0.02279663,0.0033740997,-0.017715454,0.018753052,0.0006299019,0.0016508102,-0.024536133,-0.013664246,-0.012771606,-0.02468872,0.021362305,-0.002729416,0.022064209,-0.03527832,-0.0059776306,0.021255493,-0.024978638,-0.04425049,-0.010879517,0.007698059,-0.011932373,-0.051635742,-0.0046653748,-0.009666443,0.000182271,-0.022735596,0.009483337,-0.010482788,0.028244019,-0.022064209,-0.0035076141,-0.0087509155,0.033996582,0.01398468,-0.00021004677,0.019836426,-0.01197052,-0.009689331,-0.013465881,0.007724762,-0.011444092,0.0110321045,-0.015556335,0.044525146,0.020141602,-0.016952515,0.0037612915,-0.015205383,-0.008079529,-0.0054397583,-0.029251099,-0.019256592,0.023834229,0.01890564,-0.009162903,-0.007709503,0.03677368,-0.0135650635,-0.009735107,0.019073486,0.049224854,0.008079529,0.03643799,-0.0103302,0.0012397766,-0.027893066,0.006652832,-0.007972717,0.009811401,0.021331787,-0.008888245,0.0010242462,0.00592041,0.017623901,-0.019729614,0.00048732758,0.02558899,0.018936157,-0.0049057007,0.037902832,0.021408081,-0.0013580322,-0.020233154,-0.012580872,0.028060913,0.054779053,0.011665344,0.011543274,0.00009459257,0.011642456,0.003118515,0.005214691,0.014099121,-0.019165039,-0.03186035,-0.022262573,-0.027954102,0.019958496,0.0007791519,0.008033752,-0.009002686,0.010467529,-0.0017690659,-0.026473999,-0.015586853,0.026138306,0.00932312,-0.020874023,-0.002155304,0.008003235,0.01071167,-0.03024292,0.0017471313,-0.042785645,-0.026657104,-0.020645142,-0.018112183,0.010276794,0.004875183,0.0024089813,0.005279541,0.0044898987,-0.009033203,0.0055389404,0.022644043,-0.012252808,-0.014541626,0.0211792,0.023086548,-0.010536194,0.010360718,-0.004184723,-0.012802124,0.0057411194,-0.0016317368,0.017990112,-0.026672363,0.029388428,0.0056533813,-0.0017108917,0.034332275,-0.0042495728,0.017242432,-0.018432617,-0.0019626617,-0.013313293,0.0015716553,0.04135132,-0.012313843,-0.02305603,0.00844574,-0.012039185,-0.027954102,0.0032978058,0.013420105,0.026992798,-0.0066833496,0.053497314,-0.022613525,-0.0019397736,0.008857727,0.018615723,-0.017242432,0.0049476624,0.03463745,-0.0013532639,0.008071899,0.0018568039,-0.0023326874,-0.029632568,-0.021011353,0.018661499,-0.0021247864,-0.011108398,0.02507019,0.023590088,0.053985596,-0.023910522,0.014015198,0.023757935,-0.00049591064,0.03366089,0.011192322,0.040496826,0.00058174133,-0.014099121,-0.009391785,0.0056266785,-0.027313232,0.0071029663,-0.00088357925,0.010047913,-0.048065186,0.009628296,0.000063598156,0.026046753,-0.02607727,0.02507019,-0.029083252,-0.011726379,-0.02670288,-0.0005097389,-0.036743164,-0.0010766983,0.040649414,0.0141067505,0.02558899,0.0051116943,-0.025405884,0.035858154,0.05493164,0.012382507,-0.03829956,-0.013465881,0.003692627,-0.010551453,0.0055503845,0.012214661,-0.014099121,-0.02330017,-0.0019140244,0.00025486946,-0.0011281967,-0.00036740303,0.028869629,0.023147583,-0.0010089874,-0.0074882507,0.02217102,-0.0045928955,0.007358551,0.011131287,-0.014221191,0.032165527,0.028869629,-0.020812988,0.0112838745,0.02067566,-0.04751587,0.058288574,-0.008476257,0.026687622,-0.012748718,0.017822266,-0.046936035,-0.008453369,-0.003993988,0.023132324],"createdAt":"2026-04-18T18:37:00.797Z","updatedAt":"2026-04-24T01:31:43.121Z","lastSeenAt":"2026-04-24T01:31:43.121Z","tsv":"'/api/v1/generate/resource/169':97 '/request':17,34,144 '0.02':16,33,128,143 '000':117 '0x8335':122 '20':116 '2913':123 '6':133 'accept':105 'access':103 'across':146 'actual':206 'advertis':111,152 'ai':10,27,162 'ai-inference' 'ai/ml':52 'analysi':166 'analyt':51,156 'api':4,21,41,69,102 'base':7,24,91,118,125 'base network api' 'behavior':207 'behind':213 'beyond':190 'categori':153 'challeng':110 'cheap api' 'classif':169 'classification' 'collect':46 'commit':77 'confirm':140 'connect':197 'content':203 'convers':185 'cost':114 'data':9,26,50,55,155,159,211 'data-analytics' 'decim':134 'document':188 'embed':170 'embeddings' 'endpoint':14,31,48,61,95,149,215 'equal':127 'estim':180 'exchang':175 'export':160 'feed':174 'financ':11,28,171 'finance-data' 'finance/web3':54 'gas':179 'gate':3,20 'general':57 'generat':186 'geocod':183 'geocoding' 'handl':80 'header':86 'host':44 'howev':187 'includ':154 'infer':53 'infrastructur':182 'inlin':81 'input/output':208 'insight':161 'key':70 'land':138,192 'learn':164 'limit':73 'list':99,148 'low payment fee' 'lowpaymentfee.com':35 'machin':163 'marketplac':42 'maximum':113 'metric':157 'micropayment api' 'network':92 'no-api-key' 'no-auth api' 'offer':8,25 'page':139,189,193 'pay':64 'pay per call api' 'pay-per-request':63 'payment':78,85 'per':65,129 'platform':5,22,151 'post':106 'premium':101 'price':145,173 'prompt':199 'protocol':40 'quot':178 'rate':72,176 'remain':216 'report':158 'request':66,107,130 'return':194 'schema':209 'sentiment':165 'sentiment-analysis' 'servic':59 'site':136 'sourc':212 'span':49 'specif':94 'substant':202 'summar':168 'text':167 'text-summarization' 'token':177 'undocu':217 'uniform':142 'unit':119 'upfront':76 'usdc':88,121,131 'usdc api' 'usdc-base' 'use':87,132 'util':13,30,58 'utility-services' 'valid':184 'via':82 'wallet':198 'web3':172 'x402':2,19,39,84,109 'x402 api' 'x402-gated':1,18 'x402-payment' 'x402-protocol':38","prices":[{"id":"7c22f768-f595-480b-8346-6bb0bafa84a5","listingId":"507a8cb0-79dc-4981-a89b-cb1f840f0216","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/169","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:37:00.797Z"}],"sources":[{"listingId":"507a8cb0-79dc-4981-a89b-cb1f840f0216","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/169","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:00.797Z","lastSeenAt":"2026-04-24T01:31:43.121Z"}],"details":{"listingId":"507a8cb0-79dc-4981-a89b-cb1f840f0216","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/169 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Uniform $0.02/request pricing, no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"Endpoint categories include Data & Analytics, AI & ML, Finance & Web3, and Infrastructure","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/169"}],"useCases":["Agent-driven data retrieval without managing API keys or subscriptions","On-demand AI inference (sentiment, summarization, classification, embeddings) paid per call via crypto","Fetching real-time crypto gas estimates or token price quotes with micropayments","Geocoding or data conversion as a lightweight utility service"],"bestFor":["Developers or agents wanting zero-setup, pay-as-you-go API access","x402-compatible agents that can settle USDC payments on Base","Prototyping workflows that need diverse endpoints without subscription overhead"],"notFor":["High-volume production workloads where per-request pricing adds up quickly","Users who need detailed API documentation, SLAs, or guaranteed uptime","Anyone without a Base-compatible USDC wallet or x402 payment capability"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:46.096Z"},"updatedAt":"2026-04-24T01:31:43.121Z"}}