{"id":"a5624f88-4e78-4e87-9f3d-7e7a5966850b","shortId":"N46K6m","kind":"x402","title":"Pay-per-call API platform on Base (USDC) covering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"Pay-per-call API platform on Base (USDC) covering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a broad set of endpoints spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are paid per-request using the x402 protocol, settling in USDC on the Base network. The platform advertises a flat $0.02 per request with no API keys, no rate limits, and instant access.\n\nThe specific endpoint at `/api/v1/charges/30` is labeled \"Premium API Access\" and returns a 402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per call, consistent with the site's advertised pricing. Payment is made via the x402 exact scheme with a 300-second timeout.\n\nThe platform lists 16 endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & ML (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 request/response schemas, supported parameters, and output formats for any of these endpoints remain unknown.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","data-analytics","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","crypto-quotes","gas-estimates","geocoding","validation","conversion"],"categories":["llm","data","finance","geo"],"synonyms":["low payment fee","x402 api","pay per call api","usdc api","base network api","micropayment api","data analytics api","ai inference api"],"warnings":["No API documentation available — all doc pages return only 'Connect wallet' with no content","No OpenAPI or schema definitions found for any endpoint","The specific endpoint '/api/v1/charges/30' is labeled generically as 'Premium API Access' with no indication of what data or functionality it provides","No request/response examples or parameter documentation available","Cannot verify what any of the 16 listed endpoints actually return"],"endpointUrl":"https://lowpaymentfee.com/api/v1/charges/30","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/charges/30","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 402 challenge, and the landing page lists available endpoints with pricing. However, all documentation pages are empty (just 'Connect wallet'), there is no OpenAPI spec, no request/response schemas, and no examples. The purpose of this specific '/api/v1/charges/30' endpoint labeled 'Premium API Access' is unclear — it may be a generic charge endpoint rather than a specific functional API. 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":"2026-04-19T03:51:53.775Z","embedding":[-0.021331787,-0.034088135,0.04837036,0.018920898,0.011642456,-0.017501831,-0.026062012,0.022338867,0.060302734,-0.054718018,0.027496338,-0.0491333,-0.029418945,-0.038482666,-0.013198853,0.014808655,-0.009407043,0.007171631,-0.04385376,0.03591919,0.011459351,-0.01146698,-0.020324707,0.023239136,-0.009902954,-0.01739502,0.0022678375,-0.008888245,-0.020080566,-0.037841797,0.03567505,-0.022918701,-0.0055732727,0.00944519,-0.0021629333,-0.008857727,-0.018493652,0.032196045,0.029708862,0.00036287308,-0.0143966675,-0.052734375,0.002313614,-0.020812988,-0.059509277,-0.012481689,0.020263672,-0.0032043457,0.006881714,0.01689148,-0.03918457,0.00038075447,-0.022720337,0.011657715,0.008834839,0.02243042,0.0008211136,0.010025024,0.01499939,0.002084732,-0.0011663437,-0.05807495,-0.021850586,0.006149292,-0.008766174,0.054626465,-0.007865906,0.044769287,0.0019350052,0.05355835,0.030029297,0.054229736,0.04159546,0.0077209473,0.0143966675,-0.00944519,-0.00894165,0.055358887,-0.014678955,-0.012634277,-0.0077667236,-0.009757996,-0.045562744,-0.0008568764,-0.01020813,-0.047088623,-0.028564453,0.028320312,-0.041015625,0.0413208,-0.062072754,-0.016052246,-0.019485474,-0.0047073364,0.008308411,0.006416321,0.009185791,0.021514893,-0.015777588,0.022918701,-0.0009622574,-0.043945312,0.009086609,0.013282776,0.044281006,0.04421997,0.030258179,0.011772156,-0.004863739,-0.0072517395,-0.03250122,0.017242432,-0.03152466,-0.015464783,0.017318726,0.012191772,-0.0031013489,0.015014648,-0.03967285,0.0004992485,-0.048095703,0.04095459,0.02520752,0.005580902,0.011703491,-0.04699707,-0.028640747,0.0037727356,-0.036712646,-0.020751953,-0.0045661926,0.018035889,0.036102295,-0.028320312,-0.008781433,-0.0035495758,-0.0075187683,-0.015357971,-0.046875,-0.03765869,0.03555298,-0.028182983,0.030181885,0.048065186,-0.1015625,-0.0075187683,-0.05255127,0.0031661987,-0.032562256,-0.011474609,-0.011039734,0.031829834,-0.029327393,-0.023529053,-0.015068054,-0.027389526,-0.014915466,0.021652222,-0.011871338,0.032165527,-0.028503418,0.027893066,0.004711151,-0.011192322,0.022872925,0.026870728,-0.013198853,-0.094177246,-0.08886719,-0.033599854,-0.01474762,-0.032165527,-0.028823853,-0.017242432,-0.0028038025,-0.06707764,-0.018188477,-0.00035572052,0.016357422,-0.035461426,-0.010932922,-0.025543213,0.019134521,-0.0152282715,-0.054016113,-0.0019264221,-0.017578125,0.06427002,0.020370483,0.03652954,0.029388428,-0.006401062,0.06311035,0.034484863,-0.016143799,-0.018478394,0.018478394,-0.019805908,0.02230835,-0.0035629272,0.012451172,-0.02545166,0.04547119,0.06781006,0.010566711,-0.019088745,-0.008735657,-0.05557251,-0.04067993,-0.03866577,0.023605347,0.017044067,-0.0051193237,0.045837402,-0.04751587,-0.037841797,-0.028823853,0.01033783,0.011886597,0.053955078,0.023330688,0.0031394958,0.023864746,-0.0011539459,-0.05114746,0.03692627,0.020904541,0.007686615,-0.011375427,-0.022338867,0.041381836,0.024902344,-0.025817871,0.012504578,-0.02319336,0.027359009,0.014503479,0.0075263977,0.02078247,-0.01626587,-0.023269653,-0.007911682,-0.020751953,0.021316528,0.008758545,-0.025756836,-0.035339355,-0.08074951,0.052703857,0.03579712,0.03643799,-0.017944336,0.017349243,-0.022567749,-0.0011634827,-0.06573486,0.056732178,0.08746338,0.019134521,-0.024871826,0.008468628,0.0074005127,-0.02722168,0.006477356,0.0031032562,-0.030776978,-0.003566742,0.022338867,-0.044158936,-0.016540527,0.026733398,-0.0033435822,0.056518555,-0.031585693,-0.04486084,-0.014602661,-0.00053167343,0.0033226013,-0.030899048,0.0112838745,-0.014656067,0.01777649,0.022491455,0.00083065033,0.010276794,-0.008094788,0.0032672882,-0.007686615,-0.0010232925,-0.020065308,-0.020111084,0.00036787987,-0.010391235,-0.055480957,0.014183044,0.002029419,0.061645508,-0.034088135,0.035217285,0.0010843277,0.009796143,0.05227661,-0.00059461594,-0.044830322,0.01876831,0.032165527,0.02142334,0.041778564,0.025543213,-0.03768921,0.001745224,0.078063965,0.0051002502,-0.0009050369,-0.0032100677,-0.0044403076,0.031677246,-0.016830444,-0.0597229,-0.037475586,0.008216858,-0.028045654,0.024124146,-0.021591187,0.029067993,-0.018722534,0.012252808,-0.01499939,-0.0053977966,-0.039794922,0.01625061,-0.008659363,0.014854431,-0.010101318,-0.02128601,0.018157959,0.0041656494,-0.016906738,0.0025100708,0.03390503,0.02067566,-0.020736694,-0.036590576,-0.03491211,0.0062446594,-0.012275696,0.021911621,0.02558899,0.024597168,0.049682617,-0.03793335,0.0040359497,0.02128601,0.010665894,0.028152466,-0.01777649,-0.0013618469,-0.06854248,-0.048217773,-0.03387451,-0.03881836,0.0309906,0.036010742,-0.00081157684,0.047698975,0.0060272217,-0.048797607,-0.03451538,0.019134521,-0.05178833,-0.004310608,0.023757935,-0.0006084442,-0.036590576,-0.012290955,-0.0043144226,-0.0010614395,0.03253174,0.011497498,0.019195557,0.066467285,0.03237915,0.006866455,0.028503418,0.0154418945,0.03555298,0.01285553,-0.021728516,-0.0357666,-0.003074646,0.043823242,-0.031982422,-0.027954102,-0.07366943,0.06982422,0.02835083,0.0960083,0.025466919,0.012329102,0.028213501,-0.017150879,0.010772705,-0.02658081,-0.025756836,-0.020645142,-0.02885437,0.03567505,-0.021270752,-0.0025997162,-0.02583313,0.052001953,-0.012306213,0.019836426,-0.023666382,0.050994873,-0.009841919,-0.0036735535,0.0014591217,0.016174316,0.051605225,0.068847656,-0.044433594,0.02420044,0.021881104,-0.04019165,-0.000330925,0.05670166,-0.012527466,-0.009384155,-0.072143555,-0.01687622,-0.010040283,-0.0032253265,-0.048614502,-0.00014996529,0.009338379,0.019470215,0.04336548,-0.01398468,-0.013160706,-0.01184845,-0.020050049,-0.05203247,0.0018053055,-0.050598145,-0.005847931,0.038146973,-0.028793335,-0.014389038,-0.0032100677,-0.012870789,-0.016220093,-0.00010043383,0.043945312,-0.023361206,-0.045532227,0.051086426,-0.0009741783,0.009292603,0.021347046,0.043121338,0.03805542,0.027740479,0.05999756,0.0037956238,-0.017211914,-0.052856445,0.031311035,-0.048858643,0.007045746,0.019119263,-0.014282227,-0.0019350052,-0.0019989014,-0.04107666,-0.040252686,0.014678955,-0.020080566,0.004009247,0.007259369,-0.027389526,-0.024871826,-0.05505371,-0.0053100586,-0.008415222,0.06311035,0.014663696,-0.015266418,-0.058929443,-0.004310608,0.029525757,-0.0012226105,0.04095459,-0.015052795,-0.014289856,-0.009254456,-0.04562378,0.0032672882,-0.03274536,0.02986145,-0.0023174286,-0.006504059,0.013420105,0.008087158,0.018234253,-0.0015382767,0.004447937,0.040405273,-0.033081055,-0.00920105,-0.018447876,0.025634766,0.013999939,0.0046195984,-0.03414917,0.030776978,0.018829346,0.03933716,-0.028564453,0.004497528,0.002401352,0.014656067,0.029937744,-0.022781372,-0.009475708,-0.017532349,-0.0519104,-0.044769287,0.03543091,-0.029937744,0.026535034,0.016021729,0.0025863647,0.022903442,-0.029525757,0.018096924,0.0152282715,-0.027282715,-0.0027828217,-0.020965576,-0.035705566,-0.015808105,-0.0012397766,-0.01637268,0.020263672,-0.0062065125,0.01109314,-0.0015172958,-0.02746582,0.0211792,0.017196655,-0.015037537,0.0209198,-0.004749298,0.027236938,0.04458618,0.012329102,-0.051971436,0.018081665,-0.008377075,0.015182495,-0.008628845,0.051239014,0.03640747,-0.0032730103,-0.007247925,0.0036201477,-0.016067505,-0.019561768,0.007904053,0.006893158,0.01373291,-0.0048942566,-0.045684814,0.015304565,-0.00018131733,-0.021392822,-0.0103302,0.021636963,0.010910034,-0.03881836,0.02607727,0.031982422,0.051239014,-0.01966858,0.013641357,0.00554657,0.041656494,0.038604736,0.013572693,-0.013587952,0.018554688,-0.012931824,0.00605011,-0.019424438,0.0034542084,0.016479492,-0.002729416,0.01537323,0.02619934,0.01007843,-0.027435303,-0.02267456,0.008049011,-0.01725769,-0.032226562,0.016357422,0.020767212,0.010986328,-0.03237915,0.024383545,0.006225586,-0.011314392,-0.0121154785,0.00071811676,0.032928467,-0.013923645,-0.016723633,0.019683838,0.0018253326,0.020904541,-0.043914795,-0.0009531975,0.011245728,0.008560181,-0.03543091,-0.03994751,-0.03527832,0.015808105,0.02583313,0.009048462,0.032165527,0.034088135,0.0013513565,0.009674072,0.022125244,-0.0012350082,-0.016036987,-0.0049743652,-0.052001953,-0.01651001,-0.013137817,-0.0002772808,-0.039123535,0.019241333,-0.00522995,-0.037902832,-0.0053367615,-0.004508972,-0.009986877,-0.004737854,0.01727295,0.040161133,0.003408432,0.013267517,-0.023223877,-0.0256958,-0.0063552856,-0.0073394775,0.022125244,-0.04611206,0.009719849,-0.008995056,-0.017059326,0.014907837,0.010986328,0.022033691,0.02003479,0.01663208,0.029006958,-0.04849243,0.053985596,-0.030960083,0.036621094,0.008049011,-0.04437256,-0.008049011,-0.0345459,-0.0016651154,0.04043579,-0.024612427,-0.009178162,-0.03488159,-0.028930664,-0.0017166138,-0.05227661,0.015235901,0.042541504,0.044281006,-0.011886597,0.0036640167,0.010681152,0.0019721985,-0.022964478,0.0012712479,-0.014076233,0.016448975,0.02281189,0.0059432983,-0.010871887,-0.018722534,-0.027954102,-0.0068855286,-0.06604004,-0.06604004,-0.012771606,0.003583908,-0.01285553,-0.012397766,-0.0154953,-0.03604126,-0.0038871765,-0.047943115,0.015556335,0.000808239,0.01574707,0.008132935,-0.021362305,-0.002960205,0.014465332,-0.016296387,0.02935791,0.0032615662,0.0019197464,-0.029174805,0.009552002,0.023925781,0.014549255,-0.0010681152,-0.022003174,-0.0059814453,-0.025146484,-0.055847168,-0.0021839142,-0.0026664734,-0.015449524,-0.016357422,0.0012350082,-0.055358887,-0.0035438538,-0.0284729,-0.008934021,0.025558472,0.008361816,0.0043296814,-0.008354187,0.012718201,-0.0007286072,-0.0039138794,-0.031219482,0.011444092,0.011413574,0.009284973,0.019927979,0.038604736,-0.0017137527,-0.019836426,0.0034866333,0.010398865,0.018218994,-0.020248413,0.008003235,-0.024658203,0.020080566,-0.015960693,-0.009284973,-0.033569336,0.0046081543,0.0793457,0.0006504059,-0.027679443,-0.00843811,-0.017715454,0.0060424805,0.023345947,-0.046142578,-0.0050201416,-0.032226562,0.011077881,-0.02796936,0.01713562,-0.0026168823,0.025238037,-0.02255249,-0.04916382,-0.012550354,0.012802124,-0.014213562,-0.0635376,-0.016601562,-0.057495117,0.0047302246,-0.008224487,-0.01939392,0.0022449493,0.009857178,-0.011817932,-0.07720947,0.020309448,0.048034668,0.0049705505,0.026901245,-0.0056419373,0.015144348,0.024765015,-0.013771057,-0.0070724487,0.033843994,-0.023803711,-0.020080566,-0.0126571655,0.015670776,-0.0036907196,-0.0050735474,0.014251709,0.006965637,0.008575439,0.004802704,0.016082764,-0.009735107,0.029418945,-0.013015747,0.013824463,-0.0054359436,-0.014533997,0.026062012,-0.050048828,0.02696228,0.02178955,0.0009813309,0.0041275024,0.023284912,0.041503906,-0.041259766,-0.020751953,0.013427734,-0.0006494522,0.028457642,-0.020889282,0.049438477,0.016937256,-0.022827148,0.013183594,-0.011909485,-0.022232056,-0.025436401,-0.033996582,0.021972656,0.009124756,0.0069732666,-0.010894775,0.0023670197,0.024749756,-0.009010315,0.008865356,-0.013397217,-0.010154724,-0.019332886,0.0074920654,-0.009124756,-0.0016813278,0.0032310486,0.023864746,0.011550903,0.039886475,0.0013122559,-0.0035896301,-0.0034160614,0.031311035,-0.011100769,0.009231567,0.025680542,0.018066406,0.018661499,0.021438599,0.014717102,-0.042816162,-0.006500244,-0.013893127,-0.020858765,0.0025749207,-0.010482788,-0.01802063,0.001490593,0.0030326843,-0.019897461,-0.035064697,0.0032787323,-0.031341553,-0.020812988,0.009567261,-0.004917145,0.016921997,0.00957489,-0.0016546249,0.0013055801,-0.0020828247,0.048034668,-0.008277893,-0.009056091,0.019592285,0.03616333,0.014640808,-0.04437256,-0.013420105,-0.0154953,-0.0036964417,-0.0057296753,-0.030471802,0.01159668,0.042663574,-0.01687622,0.02268982,-0.0031795502,0.023910522,-0.0049476624,0.0035972595,-0.008361816,0.01550293,-0.014862061,0.028793335,-0.049804688,0.026107788,0.016021729,0.0070724487,-0.023544312,-0.0309906,-0.020401001,0.026763916,-0.0011701584,-0.004737854,0.04989624,0.006210327,0.026794434,-0.015426636,-0.017364502,0.015449524,-0.032073975,-0.021499634,0.028961182,-0.009971619,0.004383087,0.011177063,-0.021850586,0.021026611,-0.03555298,0.013069153,0.00048971176,-0.0052108765,0.0026931763,-0.0075645447,-0.018249512,-0.0008568764,-0.01828003,0.010917664,0.0070991516,0.046875,0.018585205,0.04232788,0.04144287,0.014984131,0.004966736,-0.04333496,-0.01651001,0.0017166138,-0.029388428,0.027145386,-0.00012731552,0.035461426,0.038238525,0.0071144104,0.031555176,0.047821045,0.039398193,0.0013685226,0.015464783,-0.022491455,0.008140564,-0.0078048706,0.027069092,0.00233078,0.043670654,-0.027709961,0.01802063,0.013748169,0.021621704,-0.02078247,0.03265381,0.06964111,0.01751709,-0.008781433,0.039733887,-0.00007855892,-0.008918762,0.00024819374,-0.016860962,0.052520752,0.024429321,0.04888916,0.044128418,0.010513306,-0.013313293,0.013748169,-0.03918457,-0.031463623,0.064819336,0.030181885,-0.018966675,-0.01890564,-0.0013685226,0.015686035,-0.03881836,-0.02709961,0.020629883,-0.008171082,-0.0066719055,-0.029724121,-0.008010864,-0.016921997,0.008995056,0.02142334,0.011619568,-0.0096588135,0.017684937,0.017471313,0.007827759,0.03149414,-0.0037956238,0.030822754,-0.02520752,-0.019760132,0.012023926,0.018096924,-0.014465332,0.00095176697,0.020599365,0.0073661804,0.033447266,0.032409668,-0.018753052,0.006641388,0.024978638,0.026153564,-0.0029945374,0.051940918,0.048034668,0.013320923,0.034362793,0.030639648,0.042144775,-0.028457642,0.014854431,0.0009431839,0.013656616,-0.00032806396,-0.013542175,0.011260986,-0.0073127747,0.009346008,-0.020706177,-0.0131073,0.01965332,0.029541016,-0.01727295,-0.012199402,-0.004825592,0.008834839,-0.012924194,-0.009460449,0.013397217,-0.019561768,0.025482178,0.01373291,0.029327393,-0.025115967,0.015777588,-0.0046539307,-0.03152466,-0.0033340454,0.026489258,-0.040374756,0.008636475,-0.0005683899,-0.009399414,-0.030685425,0.006713867,0.02456665,-0.008644104,0.032043457,0.01171875,-0.0007996559,0.0006313324,0.014228821,0.013763428,-0.0047035217,-0.014091492,-0.020095825,0.03555298,0.038757324,-0.0025291443,0.010299683,-0.019332886,-0.007980347,0.0013980865,-0.0034370422,0.00095176697,-0.006034851,-0.02368164,-0.022903442,0.0154800415,0.036376953,0.024276733,0.04498291,-0.012664795,-0.014320374,0.0071258545,0.037017822,-0.0023860931,0.00036621094,-0.0011692047,0.019638062,-0.02218628,0.043792725,0.035125732,0.010925293,0.043304443,-0.001616478,-0.00023293495,0.015235901,-0.01876831,0.037231445,-0.023071289,0.0045661926,-0.008277893,0.029388428,-0.010803223,-0.030883789,0.017730713,-0.013839722,-0.024002075,-0.021881104,-0.00067329407,0.0038528442,0.032989502,0.032318115,0.02268982,-0.031951904,0.06414795,-0.00017392635,0.042236328,-0.0025501251,-0.019821167,0.047698975,0.030792236,0.0340271,0.013290405,0.008834839,-0.039611816,0.015930176,0.034179688,0.030319214,-0.0004067421,-0.00006604195,0.0007457733,0.029312134,-0.0050201416,0.030471802,-0.0061836243,0.012001038,0.00957489,-0.0047302246,0.0036067963,0.000036776066,-0.00623703,-0.0025367737,0.050811768,-0.012863159,-0.0044059753,-0.030258179,-0.005004883,0.031555176,0.0020580292,-0.0015363693,-0.014343262,-0.017349243,0.0154800415,-0.025375366,-0.031555176,0.024841309,0.019165039,-0.04272461,-0.023620605,0.008041382,0.019882202,-0.023666382,0.03616333,0.02696228,-0.004436493,-0.0015201569,0.043518066,-0.01272583,0.019348145,-0.0079422,0.01701355,0.029327393,0.0036258698,-0.026626587,-0.012817383,0.008865356,-0.010040283,0.021362305,0.032470703,-0.0034694672,0.0016422272,-0.00806427,-0.013595581,-0.015159607,-0.0053634644,-0.029144287,0.013549805,-0.013504028,-0.0031795502,0.01084137,0.0011730194,0.0043792725,0.01322937,-0.030960083,-0.018051147,0.009414673,0.02519226,0.027420044,-0.02949524,-0.0053253174,0.00019729137,0.005783081,-0.026245117,-0.024032593,-0.012145996,-0.03213501,0.008392334,0.023223877,0.012397766,0.019683838,-0.023757935,0.00069999695,0.02532959,-0.0061416626,0.017364502,0.0013990402,-0.017990112,0.006134033,-0.014770508,-0.009773254,-0.016479492,-0.015533447,0.007698059,0.01966858,0.0006637573,-0.021026611,0.024673462,-0.001953125,0.02558899,-0.0030155182,-0.013580322,0.030456543,-0.01159668,-0.009391785,0.001326561,0.030960083,-0.0129852295,0.0038700104,-0.010871887,0.036376953,0.04849243,-0.009353638,-0.014022827,0.02192688,0.015266418,0.019882202,0.050872803,0.025665283,0.036865234,0.016204834,-0.016662598,-0.017044067,0.022140503,-0.009117126,-0.03768921,0.01576233,0.0041999817,-0.009666443,0.019439697,0.010253906,-0.0090789795,-0.027191162,-0.015304565,-0.011428833,-0.014854431,0.011116028,-0.0060920715,0.026733398,-0.012191772,-0.010353088,0.0077400208,-0.025146484,-0.05899048,-0.012870789,0.006259918,-0.011558533,-0.042877197,-0.0031108856,-0.028503418,0.0009551048,-0.020050049,-0.005455017,-0.021438599,0.023895264,-0.01676941,-0.008361816,-0.0019016266,0.014945984,0.029830933,-0.001868248,0.004638672,-0.024932861,-0.016326904,-0.022872925,0.011428833,-0.019073486,0.02330017,0.015655518,0.03982544,0.025558472,-0.013336182,0.0075263977,-0.016860962,-0.0052337646,-0.013839722,-0.0335083,-0.028366089,0.023849487,0.020492554,-0.008628845,-0.012664795,0.02645874,-0.021392822,-0.0029945374,0.02784729,0.03955078,0.0025730133,0.021942139,-0.019515991,0.005256653,-0.0154953,-0.0004620552,-0.008514404,-0.004825592,0.021469116,0.004486084,0.0002207756,0.007965088,0.016677856,-0.015281677,-0.011329651,0.026000977,0.015960693,-0.02180481,0.04269409,0.018066406,0.009666443,-0.00029587746,-0.0071144104,0.024902344,0.058776855,0.0115737915,0.009490967,-0.00028181076,0.00920105,-0.008895874,0.0074272156,0.011512756,-0.025863647,-0.04232788,-0.025222778,-0.022277832,0.016967773,0.012641907,0.011299133,-0.0068473816,0.01902771,-0.021591187,-0.03074646,-0.023071289,0.028259277,0.01777649,-0.018692017,-0.0107040405,0.011634827,0.018722534,-0.027786255,-0.002614975,-0.027999878,-0.026626587,-0.005760193,-0.0231781,0.025543213,0.008522034,-0.0040893555,-0.0017080307,-0.0025463104,0.000047922134,-0.009819031,0.02784729,-0.018188477,0.00198555,0.024627686,0.018188477,-0.02166748,0.0236969,-0.015586853,-0.0070610046,0.013343811,-0.011177063,0.01776123,-0.020553589,0.03982544,-0.0059509277,0.0006532669,0.041381836,-0.0055160522,0.011108398,-0.030715942,-0.003583908,-0.002084732,-0.005252838,0.045135498,-0.0072135925,-0.018951416,0.0072250366,-0.01689148,-0.01928711,-0.0014190674,0.008918762,0.034118652,-0.0054779053,0.046295166,-0.012886047,-0.008399963,0.008911133,0.016326904,-0.011711121,0.0032958984,0.023483276,0.013931274,0.003862381,-0.003238678,-0.008903503,-0.029937744,-0.009170532,0.02180481,-0.007835388,-0.012886047,0.019134521,0.0066719055,0.05529785,-0.0020771027,0.019241333,0.018600464,-0.00415802,0.033447266,-0.007572174,0.049041748,-0.010696411,-0.033843994,-0.0021820068,-0.0021018982,-0.031280518,-0.003162384,0.0013656616,-0.0022525787,-0.037017822,0.016708374,-0.013961792,0.030853271,-0.019851685,0.014717102,-0.02935791,-0.004180908,-0.040496826,-0.0181427,-0.041625977,0.008712769,0.02658081,-0.00043177605,0.029434204,0.005340576,-0.016357422,0.035095215,0.046569824,0.009002686,-0.023086548,-0.016616821,0.005138397,-0.0031490326,0.007659912,0.016830444,-0.013771057,-0.0070114136,0.0026931763,-0.025222778,0.018951416,-0.013191223,0.022750854,0.014373779,0.0038604736,-0.009796143,0.032043457,0.0019197464,-0.0028476715,0.017211914,0.007888794,0.038513184,0.02279663,-0.015991211,0.020736694,0.013999939,-0.04095459,0.064453125,-0.0044898987,0.03286743,-0.011009216,0.015914917,-0.03643799,-0.02456665,-0.0055503845,0.018112183],"createdAt":"2026-04-18T18:45:01.660Z","updatedAt":"2026-04-23T08:01:17.961Z","lastSeenAt":"2026-04-23T08:01:17.961Z","tsv":"'/api/v1/charges/30':105 '/request':19,38 '0.02':18,37,88,137 '000':120 '0x8335':125 '16':163 '20':119 '2913':126 '300':157 '402':114 '6':132 'access':100,110 'across':165 'actual':218 'advertis':85,145 'ai':12,31,57,175 'ai inference api' 'ai-inference' 'analysi':178 'analyt':56,169 'api':5,24,45,93,109 'base':8,27,81,121,128 'base network api' 'beyond':202 'broad':50 'call':4,23,139 'categori':167 'challeng':115 'classif':181 'classification' 'connect':209 'consist':140 'content':215 'convers':197 'conversion' 'cover':10,29 'crypto-quotes' 'data':11,30,55,168,172 'data analytics api' 'data-analytics' 'decim':133 'document':200 'embed':182 'embeddings' 'enabl':44 'endpoint':16,35,53,66,103,164,230 'estim':192 'exact':153 'exchang':187 'export':173 'feed':186 'financ':13,32,60,183 'finance-data' 'flat':87 'format':225 'four':166 'gas':191 'gas-estimates' 'generat':198 'geocod':195 'geocoding' 'howev':199 'infrastructur':63,194 'insight':174 'instant':99 'key':94 'label':107 'land':204 'learn':59 'limit':97 'list':162 'low payment fee' 'lowpaymentfee.com':39 'machin':58 'made':149 'metric':170 'micropayment api' 'ml':176 'network':82 'offer':48 'output':224 'page':201,205 'paid':68 'paramet':222 'pay':2,21 'pay per call api' 'pay-per-cal':1,20 'pay-per-request' 'payment':147 'per':3,22,70,89,138 'per-request':69 'platform':6,25,46,84,161 'premium':108 'price':146,185 'prompt':211 'protocol':75 'quot':190 'rate':96,188 'remain':231 'report':171 'request':71,90,116 'request/response':219 'return':112,206 'schema':220 'scheme':154 'second':158 'sentiment':177 'sentiment-analysis' 'set':51 'settl':76 'sinc':129 'site':143 'span':54 'specif':102 'substant':214 'summar':180 'support':221 'text':179 'text-summarization' 'timeout':159 'token':189 'translat':135 'unit':122 'unknown':232 'usdc':9,28,78,124,130 'usdc api' 'usdc-base' 'use':72,131 'util':15,34,64 'valid':196 'validation' 'via':150 'wallet':210 'web3':61,184 'x402':43,74,152 'x402 api' 'x402-enabled':42 'x402-payment'","prices":[{"id":"ea29b0ae-c44f-43f9-892b-06c12c9dd02f","listingId":"a5624f88-4e78-4e87-9f3d-7e7a5966850b","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/charges/30","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:45:01.660Z"}],"sources":[{"listingId":"a5624f88-4e78-4e87-9f3d-7e7a5966850b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/charges/30","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:45:01.660Z","lastSeenAt":"2026-04-23T08:01:17.961Z"}],"details":{"listingId":"a5624f88-4e78-4e87-9f3d-7e7a5966850b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/charges/30 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Platform lists 16 endpoints across data, AI, finance, and infrastructure categories, all at $0.02/request","source_url":"https://lowpaymentfee.com"},{"claim":"Pricing is $0.02/request with no API keys, no rate limits, instant access, on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge requests maxAmountRequired of 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/charges/30"}],"useCases":["Querying real-time financial data (prices, exchange rates, gas estimates) with per-call USDC payments","Running AI inference tasks (sentiment analysis, summarization, classification, embeddings) without API key management","Accessing utility services like geocoding, validation, and data conversion on a pay-as-you-go basis","Exporting data or generating analytics reports with no subscription commitment"],"bestFor":["Agents or developers who want zero-signup, pay-per-use API access","Crypto-native applications that can settle payments in USDC on Base","Prototyping or low-volume use cases where $0.02/request is cost-effective"],"notFor":["High-volume production workloads where per-request pricing adds up quickly","Users who need detailed API documentation, schemas, or SLAs before integrating","Applications requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:22.736Z"},"updatedAt":"2026-04-23T08:01:17.961Z"}}