{"id":"ddf8b791-2056-4113-bfb9-4cf17c1b4977","shortId":"y4S8Ub","kind":"x402","title":"Pay-per-request API platform on Base via x402 — $0.02/call for data, AI, finance, and utility endpoints.","tagline":"Pay-per-request API platform on Base via x402 — $0.02/call for data, AI, finance, and utility endpoints.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of pay-per-request endpoints across four categories: 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 utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request, settled in USDC on the Base network.\n\nThe specific endpoint at `/api/v1/orders/43` is described as \"Premium API Access\" and accepts POST requests. Its x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme with no API keys or rate limits required — callers simply attach an X-PAYMENT header to each request.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the `/api/v1/orders/43` endpoint actually returns. The broader site lists many endpoints but provides no detail on input parameters or response formats for any of them.","tags":[],"capabilities":["x402-payment","per-request-billing","usdc-settlement","base-network","no-api-key","data-analytics","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","geocoding","utility-apis"],"categories":["api-platform","ai","finance","data"],"synonyms":["pay-per-call API","x402 API","micropayment API","USDC API","Base network API","lowpaymentfee","low payment fee","crypto API billing"],"warnings":["No OpenAPI or schema documentation available for any endpoint","The specific purpose and expected input/output of /api/v1/orders/43 is undocumented","All non-homepage pages (docs, API, pricing, README) returned only 'Connect wallet' with no content","No request or response examples could be sourced"],"endpointUrl":"https://lowpaymentfee.com/api/v1/orders/43","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/orders/43","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 with clear pricing. However, there is no OpenAPI spec, no documentation of request/response schemas, no examples, and the specific purpose of the /api/v1/orders/43 endpoint is unclear beyond the generic label 'Premium API Access'. Most crawled pages returned only a wallet-connect prompt.","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":"2026-04-18T22:37:08.349Z","embedding":[-0.023040771,-0.036254883,0.025604248,0.00091457367,0.013305664,-0.039245605,-0.040527344,0.029830933,0.05307007,-0.06793213,0.024124146,-0.057922363,-0.02947998,-0.034729004,-0.0073890686,0.021743774,0.0047569275,0.007850647,-0.04736328,0.049713135,0.024795532,-0.010955811,-0.035247803,0.0071144104,-0.024490356,-0.021224976,0.0005478859,-0.012626648,-0.015777588,-0.03479004,0.030166626,-0.028717041,-0.0075302124,0.016220093,-0.008918762,-0.0115737915,-0.011764526,0.05001831,0.03387451,-0.002943039,0.00014829636,-0.056121826,0.009681702,-0.006916046,-0.052612305,-0.004055023,0.019332886,-0.022659302,-0.013404846,-0.0020771027,-0.04360962,0.012191772,-0.0077323914,0.0075035095,0.008590698,0.017593384,-0.009185791,0.0034008026,0.011528015,0.01399231,-0.0006546974,-0.066223145,-0.022506714,-0.0063438416,-0.003742218,0.06427002,-0.009819031,0.035461426,0.022506714,0.06304932,0.024002075,0.041137695,0.044036865,0.0038700104,0.028030396,-0.011253357,-0.0038433075,0.056793213,-0.011108398,-0.024291992,-0.026031494,-0.027770996,-0.051635742,-0.01953125,-0.009765625,-0.0703125,-0.029373169,0.014755249,-0.038726807,0.020263672,-0.068481445,-0.0065841675,-0.00605011,0.004333496,0.009613037,-0.013961792,-0.017532349,0.02128601,-0.015113831,0.026031494,0.002922058,-0.04675293,0.008796692,0.01486969,0.03869629,0.061340332,0.013504028,0.029586792,0.010818481,-0.026260376,-0.036376953,0.018585205,-0.019515991,-0.025222778,0.013175964,0.0126571655,-0.02659607,0.025726318,-0.040618896,0.015403748,-0.045532227,0.042663574,0.022705078,0.0038833618,-0.0011320114,-0.049804688,-0.018859863,-0.0066871643,-0.01802063,-0.012481689,0.021072388,0.010437012,0.025863647,-0.034301758,-0.033447266,-0.0030727386,-0.006641388,-0.002544403,-0.044036865,-0.03744507,0.034240723,-0.028869629,0.019088745,0.02760315,-0.10119629,-0.01826477,-0.047912598,-0.009735107,-0.02670288,-0.01625061,-0.00027823448,0.009544373,-0.025146484,-0.033111572,-0.021408081,-0.024307251,0.0022907257,0.021865845,-0.016357422,0.036193848,-0.016601562,0.019760132,0.012130737,-0.0013837814,0.010978699,0.026885986,-0.0022296906,-0.082458496,-0.0814209,-0.03363037,-0.012756348,-0.0112838745,-0.017150879,-0.011222839,0.007331848,-0.062194824,-0.008674622,-0.011894226,-0.0059318542,-0.04385376,-0.0051345825,-0.021362305,0.012748718,-0.01348114,-0.045562744,-0.016708374,-0.04034424,0.06896973,0.01586914,0.027954102,0.021209717,-0.002210617,0.05606079,0.039520264,0.0029850006,-0.023468018,0.010879517,-0.01878357,0.031341553,0.0065994263,0.020355225,-0.029953003,0.03741455,0.07342529,0.00037002563,-0.02835083,-0.0054740906,-0.061828613,-0.049713135,-0.033111572,0.022583008,0.0017404556,-0.0062408447,0.019348145,-0.031982422,-0.043395996,-0.0084991455,0.01977539,0.0032043457,0.06085205,0.022018433,-0.0025672913,0.011260986,0.01928711,-0.034423828,0.046966553,0.046905518,-0.0011253357,-0.026382446,-0.039276123,0.032592773,0.035247803,-0.025909424,0.019439697,-0.027954102,0.03488159,-0.007396698,0.021835327,0.004627228,-0.0055160522,-0.008552551,-0.02998352,-0.010665894,0.021728516,0.014160156,-0.023590088,-0.03225708,-0.07098389,0.041900635,0.03677368,0.03656006,-0.0138549805,-0.00687027,-0.034088135,-0.02067566,-0.07092285,0.05078125,0.079833984,-0.0020942688,-0.012130737,0.013748169,0.023498535,-0.024505615,0.011314392,-0.00415802,-0.024246216,-0.019546509,0.0040893555,-0.05166626,0.0020179749,0.016189575,0.02444458,0.05807495,-0.011810303,-0.0513916,-0.013137817,-0.0032405853,-0.003929138,-0.016235352,-0.006198883,-0.0049324036,0.013763428,0.03967285,-0.0012264252,0.009628296,-0.0037937164,0.017181396,-0.014770508,-0.0044555664,-0.016647339,-0.0262146,0.004989624,0.005569458,-0.07293701,0.0070724487,-0.01537323,0.07397461,-0.048950195,0.035247803,-0.0036849976,0.020111084,0.039123535,-0.000831604,-0.029266357,0.0093307495,0.01802063,0.014846802,0.04348755,0.009399414,-0.01864624,-0.0015859604,0.09033203,-0.021713257,-0.0031852722,-0.0012598038,0.0095825195,0.044708252,-0.0041389465,-0.04837036,-0.045013428,-0.0036315918,-0.028686523,0.018218994,-0.0064086914,0.021713257,-0.010520935,0.0032596588,-0.020812988,-0.007843018,-0.022613525,0.0076026917,-0.007385254,0.004295349,-0.010169983,-0.037506104,0.0055389404,0.022918701,-0.005897522,0.027709961,0.029251099,0.026885986,-0.019348145,-0.03488159,-0.030807495,-0.02230835,-0.004501343,0.0073242188,0.022994995,0.018493652,0.054779053,-0.041259766,0.00017035007,0.03390503,0.004184723,0.03765869,-0.0006737709,0.0006403923,-0.07342529,-0.06121826,-0.026107788,-0.03567505,0.03363037,0.028762817,-0.006439209,0.06774902,0.0012607574,-0.017242432,-0.036865234,0.0074882507,-0.03677368,0.008125305,0.043518066,-0.020217896,-0.04333496,-0.0012788773,-0.013206482,0.009414673,0.03857422,0.011169434,0.02029419,0.06341553,0.030059814,0.0016860962,0.035827637,0.020065308,0.023406982,0.0048713684,-0.017440796,-0.026641846,-0.015411377,0.025848389,-0.025924683,-0.005302429,-0.051696777,0.058502197,0.03616333,0.08862305,-0.005722046,0.0057258606,0.0435791,-0.013687134,0.008140564,-0.011932373,-0.014572144,-0.040985107,-0.054992676,0.028213501,-0.022903442,-0.0031166077,-0.023025513,0.024627686,-0.0013217926,0.016036987,-0.036132812,0.032470703,-0.0104599,0.003929138,0.01272583,-0.0025520325,0.05722046,0.04397583,-0.04260254,0.0105896,0.020843506,-0.046905518,0.00024044514,0.04071045,-0.024414062,-0.016860962,-0.046783447,-0.027160645,-0.0113220215,0.0032444,-0.06640625,-0.0028934479,-0.00299263,0.014862061,0.027267456,-0.008987427,-0.017440796,-0.0016717911,-0.020706177,-0.060455322,0.006263733,-0.034698486,0.004337311,0.049041748,-0.014305115,0.0065612793,-0.005458832,-0.01512146,-0.002576828,0.016159058,0.03161621,-0.000019550323,-0.043182373,0.031921387,-0.0066604614,0.0016202927,0.020385742,0.033477783,0.04144287,0.027679443,0.03262329,0.004295349,-0.018173218,-0.061553955,0.00793457,-0.043060303,0.01727295,0.0049362183,-0.021331787,-0.010185242,-0.016845703,-0.03225708,-0.020370483,0.007949829,-0.02154541,-0.011413574,0.034942627,-0.0357666,-0.020141602,-0.0541687,-0.013648987,-0.006385803,0.0748291,0.027526855,-0.016555786,-0.060699463,-0.017410278,0.016693115,-0.0022392273,0.020019531,-0.014808655,0.000055491924,-0.011726379,-0.04776001,-0.020263672,-0.015045166,0.030319214,-0.005001068,-0.010765076,0.027191162,-0.006374359,0.015609741,-0.010612488,-0.005531311,0.030532837,-0.023345947,0.0042762756,-0.008590698,0.038635254,0.011131287,-0.0027561188,-0.03955078,0.052612305,0.007785797,0.0446167,-0.03668213,-0.008460999,-0.01687622,0.020614624,0.029907227,-0.0158844,0.00089883804,-0.00920105,-0.04309082,-0.041656494,0.039276123,-0.022491455,0.022628784,0.0135650635,0.006000519,0.03250122,-0.021377563,0.0129776,0.025634766,-0.025543213,-0.0138549805,-0.010765076,-0.04336548,-0.0143966675,-0.015777588,-0.012702942,0.03414917,-0.013206482,0.020614624,-0.00868988,-0.026153564,0.037261963,0.00843811,0.0051193237,0.0128479,0.0011634827,0.019012451,0.050933838,0.024215698,-0.045410156,0.03366089,0.003326416,0.023880005,-0.009170532,0.046142578,0.03527832,-0.010025024,0.002735138,-0.0067443848,-0.019821167,-0.015914917,0.0027046204,0.0000782609,0.012168884,-0.008102417,-0.02835083,0.01133728,0.004688263,-0.012481689,-0.03756714,0.0071792603,0.0038146973,-0.0446167,0.019378662,0.033355713,0.062408447,-0.022155762,0.011940002,0.017822266,0.036468506,0.03173828,0.017333984,-0.013450623,0.018707275,-0.007106781,0.006259918,-0.0056381226,-0.007949829,0.026885986,-0.00021505356,0.023605347,0.020874023,0.0062065125,-0.027297974,-0.030517578,0.012718201,-0.022521973,-0.017868042,0.03213501,0.028167725,0.030319214,-0.023422241,0.01979065,-0.0017814636,-0.02279663,-0.027420044,-0.013580322,0.03778076,-0.014434814,-0.010871887,0.0119018555,0.01537323,0.019302368,-0.052581787,-0.007843018,0.021331787,0.0138549805,-0.01134491,-0.03930664,-0.03579712,-0.004047394,0.045837402,0.0039749146,0.013839722,0.027557373,0.00045895576,0.008132935,0.0059547424,0.002653122,-0.018569946,-0.015899658,-0.04360962,-0.011695862,0.009239197,0.0074043274,-0.03353882,0.014808655,-0.012496948,-0.01991272,0.0076141357,-0.029800415,-0.0034370422,-0.010627747,0.0019254684,0.042419434,-0.009407043,0.01777649,-0.016159058,-0.030197144,-0.018798828,0.007751465,0.013671875,-0.054901123,0.0126571655,-0.007835388,-0.0069274902,0.0031471252,0.016952515,0.007091522,0.025161743,0.015960693,0.049926758,-0.033111572,0.04486084,-0.029541016,0.026992798,-0.0135650635,-0.038116455,-0.0050201416,-0.022872925,-0.009918213,0.038909912,-0.028930664,-0.010246277,-0.016845703,-0.039733887,-0.0155181885,-0.062561035,0.014633179,0.029769897,0.035491943,-0.01626587,0.0029258728,0.0056114197,0.010375977,-0.021881104,0.0054740906,-0.010902405,0.018371582,0.021728516,-0.0077400208,-0.02708435,-0.026550293,-0.013267517,0.0070610046,-0.048736572,-0.057647705,-0.0064926147,-0.0042762756,-0.0021820068,-0.004196167,-0.032104492,-0.035980225,0.000118374825,-0.034423828,0.019638062,0.003490448,0.018508911,0.0026226044,-0.021087646,0.002380371,0.0052452087,-0.011291504,0.024017334,0.00299263,-0.026641846,-0.026412964,0.0043945312,0.026443481,0.025497437,0.003932953,-0.021820068,0.00040483475,-0.013168335,-0.038848877,-0.00687027,-0.007713318,-0.010925293,-0.003030777,0.014198303,-0.047576904,0.002632141,-0.040924072,-0.008880615,0.03366089,0.011489868,0.0058670044,-0.010795593,-0.0022678375,0.005256653,-0.0054512024,-0.03338623,0.01537323,0.01096344,0.0024471283,0.016189575,0.05178833,-0.0075416565,-0.010063171,-0.00945282,0.0090789795,0.021392822,-0.025512695,0.0056266785,-0.034301758,0.019546509,-0.015686035,-0.007396698,-0.038482666,-0.00687027,0.065979004,-0.0017719269,0.0047721863,-0.007911682,-0.011978149,0.022628784,0.03729248,-0.033081055,0.0023155212,-0.011787415,0.010627747,-0.024398804,0.012619019,-0.0019073486,0.024993896,-0.027679443,-0.054260254,-0.011138916,-0.0003836155,-0.025512695,-0.06726074,-0.028579712,-0.08972168,0.0010099411,-0.013511658,-0.028793335,0.0009870529,0.0103302,-0.024291992,-0.0736084,-0.00116539,0.061279297,-0.0042800903,0.026885986,-0.010475159,0.0137786865,0.037750244,-0.034210205,-0.001953125,0.023483276,-0.02684021,-0.024749756,-0.019058228,0.021575928,-0.013549805,0.000095009804,0.0036792755,0.00674057,0.0134887695,-0.00415802,0.010475159,-0.022018433,0.023223877,-0.014884949,0.026565552,-0.004776001,-0.014465332,0.054534912,-0.062286377,0.0262146,0.007385254,-0.018737793,0.014923096,0.039154053,0.034454346,-0.042388916,-0.012451172,0.022537231,0.020004272,0.017166138,-0.016616821,0.042419434,0.0140686035,-0.011375427,0.005958557,-0.009567261,-0.019882202,-0.041046143,-0.05117798,0.03237915,-0.0006670952,0.0061187744,-0.018218994,0.011070251,0.010574341,-0.000538826,0.0027713776,-0.020050049,-0.03074646,-0.023971558,0.0038928986,-0.00566864,0.009788513,0.0020484924,0.029632568,0.02279663,0.041412354,0.0010690689,-0.0064430237,0.02293396,0.032073975,-0.022903442,-0.00374794,0.018234253,-0.0024204254,0.019638062,0.027191162,0.012519836,-0.054260254,-0.012512207,-0.03353882,0.0031700134,-0.003522873,-0.014427185,-0.013168335,-0.008346558,-0.0012178421,-0.0041389465,-0.037628174,0.00038671494,-0.034057617,-0.024536133,-0.019699097,0.0012760162,0.030303955,0.017044067,-0.0043563843,0.0042266846,0.00090551376,0.053955078,-0.0016078949,-0.013389587,0.02947998,0.04534912,0.025924683,-0.033294678,-0.008323669,0.0009598732,-0.005432129,-0.00049972534,-0.020431519,0.01977539,0.034851074,-0.009414673,0.0069274902,-0.0034275055,0.036895752,-0.007369995,0.00806427,-0.014625549,0.015060425,-0.0026607513,0.044677734,-0.050750732,0.0039749146,0.022399902,-0.0039367676,-0.0135269165,-0.0124053955,-0.018829346,0.029449463,-0.004257202,-0.0011091232,0.048095703,0.004131317,0.021240234,-0.03579712,-0.019866943,-0.005290985,-0.016616821,-0.028747559,0.018539429,-0.009437561,0.0056381226,0.015464783,-0.019729614,0.024215698,-0.025100708,0.014305115,0.006374359,0.017303467,-0.011947632,-0.0071144104,-0.0154800415,-0.011329651,-0.011253357,-0.0044937134,-0.0050086975,0.04031372,0.019729614,0.031311035,0.042755127,0.011947632,0.015945435,-0.041748047,-0.018096924,-0.0055656433,-0.009918213,0.016021729,-0.02154541,0.030090332,0.033691406,0.014160156,0.028320312,0.025878906,0.048217773,-0.0004911423,0.010536194,-0.011390686,0.0043754578,-0.027893066,0.018859863,-0.006000519,0.04815674,-0.029449463,0.018600464,0.01965332,0.029006958,-0.021774292,0.031097412,0.058441162,0.020248413,-0.00033950806,0.04537964,0.0031719208,-0.0047073364,-0.0071983337,-0.02154541,0.04953003,0.0056762695,0.037200928,0.03643799,0.0014677048,-0.014030457,0.03189087,-0.03378296,-0.013061523,0.0513916,0.034210205,-0.03173828,0.0007100105,-0.0037841797,0.007118225,-0.041503906,-0.023666382,0.011665344,0.010169983,0.0013484955,-0.007171631,-0.0178833,-0.020446777,0.0053977966,0.017852783,0.017196655,-0.016525269,0.012229919,0.024276733,0.005554199,0.024017334,0.0037155151,0.029953003,-0.032104492,-0.026306152,0.015403748,0.0062942505,-0.0070152283,-0.017120361,0.030197144,-0.0039749146,0.040100098,0.036376953,-0.013069153,0.0057792664,0.01889038,0.008338928,0.0024585724,0.061431885,0.041168213,0.016098022,0.03717041,0.03439331,0.02609253,-0.03363037,0.006290436,-0.011741638,0.008659363,-0.021850586,-0.023635864,0.011360168,-0.008285522,0.030410767,0.004207611,-0.0048446655,0.019134521,0.036224365,0.007045746,-0.004070282,-0.014480591,0.0146102905,-0.022598267,-0.013694763,0.01689148,-0.006580353,0.035064697,0.016830444,0.032684326,-0.028366089,0.0340271,-0.009399414,-0.013893127,-0.0025100708,0.020126343,-0.0423584,0.015670776,-0.006439209,-0.0039787292,-0.03677368,0.008682251,0.028656006,-0.0060310364,0.0075035095,0.024169922,-0.0021076202,-0.012039185,0.020065308,0.021728516,-0.0103302,-0.018081665,-0.016738892,0.019744873,0.039215088,0.0045166016,0.01676941,-0.019638062,0.010910034,-0.0053634644,-0.009483337,0.0039787292,0.0028381348,-0.013183594,-0.0034942627,0.028060913,0.037261963,0.017654419,0.043060303,-0.015388489,-0.012062073,0.009590149,0.029159546,0.017654419,-0.00047636032,0.0054473877,0.013092041,-0.02330017,0.033203125,0.026321411,0.011413574,0.029266357,0.0045280457,-0.0029754639,0.020111084,-0.026428223,0.013206482,-0.019805908,0.00045323372,-0.0021476746,0.022155762,-0.018600464,-0.040771484,0.0051002502,-0.016967773,-0.0206604,-0.02255249,0.018753052,0.006275177,0.022247314,0.046813965,0.017105103,-0.03100586,0.061035156,-0.020996094,0.0552063,-0.004951477,-0.008911133,0.05142212,0.025527954,0.03164673,0.00982666,0.006816864,-0.035095215,0.02331543,0.03277588,0.021392822,0.012367249,-0.008865356,-0.004432678,0.037719727,-0.00038576126,0.03503418,0.0027999878,0.0032463074,0.021072388,-0.0013504028,-0.0074310303,-0.0071907043,-0.008636475,0.004535675,0.047546387,-0.007171631,-0.006000519,-0.025756836,-0.017684937,0.025466919,-0.011947632,-0.004562378,0.00868988,-0.020843506,0.0076293945,-0.033569336,-0.011291504,0.014862061,0.020996094,-0.04711914,-0.022415161,0.015533447,0.029403687,-0.025558472,0.028366089,0.024246216,-0.010681152,0.013648987,0.04043579,-0.009185791,0.02420044,-0.014160156,0.028457642,0.033447266,0.002544403,-0.008171082,0.003566742,0.013160706,-0.011474609,0.0184021,0.029006958,-0.012214661,-0.0048065186,-0.0025939941,0.0019836426,-0.0015554428,0.0011711121,-0.00038838387,0.008682251,-0.0021800995,-0.0010948181,0.015296936,0.009101868,-0.0036849976,0.0069618225,-0.009597778,-0.008979797,0.0154953,0.038879395,0.026779175,-0.03567505,0.012962341,0.007675171,0.0027713776,-0.021835327,-0.012458801,0.001499176,-0.019226074,0.015556335,0.0076026917,0.021591187,0.012794495,-0.02508545,0.0042533875,0.03173828,0.0113220215,0.019729614,-0.008598328,-0.0129470825,0.012428284,-0.010902405,-0.01146698,-0.00019478798,-0.016555786,-0.009963989,0.012413025,-0.007106781,-0.0256958,0.015670776,-0.0052375793,0.00009763241,0.0020866394,-0.017242432,0.010124207,-0.016921997,-0.009689331,0.0034484863,0.0077590942,-0.012672424,-0.014411926,-0.009918213,0.047454834,0.052490234,-0.012390137,-0.012893677,0.022216797,0.018203735,0.017150879,0.04574585,0.017044067,0.045196533,0.016220093,-0.018539429,-0.020950317,0.017349243,-0.021728516,-0.022949219,0.014625549,-0.011741638,-0.0077781677,0.008110046,0.004573822,-0.0027046204,-0.024368286,-0.011978149,-0.015045166,-0.023468018,0.020095825,-0.0033721924,0.017929077,-0.026031494,-0.010215759,0.011291504,-0.034301758,-0.040283203,-0.02229309,0.005153656,-0.020233154,-0.05886841,-0.008804321,-0.030532837,0.0043792725,-0.012161255,0.0012617111,-0.010017395,0.027954102,-0.014503479,-0.0053100586,0.00049066544,0.027236938,0.012863159,0.0048446655,0.025726318,-0.027633667,-0.018508911,-0.03704834,-0.00032114983,-0.010131836,0.021148682,0.0072135925,0.037109375,0.030670166,0.0003745556,-0.0014925003,-0.020980835,0.000115156174,-0.007701874,-0.029907227,-0.014976501,0.01638794,0.016647339,-0.0004646778,0.004043579,0.02708435,-0.020736694,-0.0046691895,0.016830444,0.037994385,0.0076522827,0.033111572,-0.010032654,-0.00041794777,-0.013687134,-0.0026798248,-0.0021915436,0.010154724,-0.0040893555,-0.006755829,-0.0026988983,-0.0005722046,0.033477783,-0.026733398,-0.017959595,0.030227661,0.01260376,-0.0007419586,0.044891357,0.017150879,0.0076675415,-0.01360321,-0.015083313,0.022903442,0.05706787,0.01121521,0.030380249,0.007434845,0.00623703,-0.018997192,0.0036354065,0.019973755,-0.01651001,-0.051483154,-0.0066184998,-0.036621094,0.03427124,-0.0058135986,0.0127334595,-0.01084137,0.004234314,-0.011436462,-0.037872314,-0.025238037,0.02204895,0.014411926,-0.0067100525,-0.009605408,0.0077056885,0.010551453,-0.032440186,-0.0024986267,-0.038391113,-0.029632568,-0.028457642,-0.008621216,0.026428223,0.011871338,-0.01096344,-0.0069885254,-0.002773285,-0.0033874512,-0.005252838,0.023483276,-0.018081665,-0.00037956238,0.019058228,0.015098572,-0.035064697,0.02368164,-0.009231567,0.00042653084,0.010467529,-0.011711121,0.029083252,-0.003271103,0.03152466,-0.0048446655,-0.01663208,0.033203125,0.0041122437,0.021224976,-0.03286743,0.0067977905,-0.004627228,0.008201599,0.04034424,-0.01864624,-0.01939392,0.015403748,-0.020629883,-0.019485474,0.004787445,0.020950317,0.018447876,-0.018157959,0.041137695,-0.01550293,-0.00039482117,0.005203247,0.019180298,-0.017120361,0.008468628,0.043670654,0.004722595,0.004421234,0.0017566681,-0.009552002,-0.025527954,-0.0060806274,0.010925293,0.0070877075,-0.026138306,0.026397705,0.01537323,0.050811768,-0.0107803345,0.015823364,0.02230835,-0.014213562,0.03439331,0.013938904,0.037261963,0.0053634644,-0.034729004,0.0008049011,-0.00856781,-0.03363037,0.001329422,-0.00090551376,0.005722046,-0.028900146,0.002998352,-0.011146545,0.022781372,-0.023895264,0.014320374,-0.026412964,-0.0061073303,-0.034362793,-0.0088272095,-0.032318115,0.015548706,0.04348755,-0.00024938583,0.018051147,0.003967285,-0.025131226,0.02368164,0.055633545,0.004306793,-0.034179688,-0.0158844,0.008308411,0.00045990944,0.013839722,0.008033752,-0.013542175,-0.03173828,0.0069007874,-0.013923645,-0.0047035217,-0.010856628,0.015808105,0.0060691833,0.0031414032,-0.005657196,0.029266357,0.0012950897,0.009971619,-0.0028705597,0.009796143,0.025497437,0.034179688,-0.016326904,0.027023315,0.01789856,-0.042510986,0.06695557,-0.011680603,0.030807495,-0.013763428,0.01940918,-0.026275635,-0.04031372,-0.0052948,-0.0057754517],"createdAt":"2026-04-18T18:36:40.282Z","updatedAt":"2026-04-22T21:30:30.299Z","lastSeenAt":"2026-04-22T21:30:30.299Z","tsv":"'/api/v1/orders/43':113,214 '/call':12,31 '0.02':11,30,99,143 '000':132 '0x8335':137 '20':131 '2913':138 '6':147 'Base network API' 'USDC API' 'accept':121 'access':119 'across':58 'actual':216 'advertis':127 'ai':15,34,68 'ai-inference' 'analysi':72 'analyt':62 'api':5,24,45,118,159,183 'attach':167 'base':8,27,107,133,140 'base-network' 'broad':50 'broader':219 'caller':165 'catalog':51 'categori':60 'challeng':126 'classif':75 'classification' 'connect':192 'content':198 'convers':92 'crawl':181 'crypto API billing' 'data':14,33,61,65 'data-analytics' 'decim':148 'describ':115 'detail':227 'doc':182 'document':176,207 'embed':76 'embeddings' 'enabl':44 'endpoint':19,38,57,95,111,215,223 'equal':142 'estim':86 'exact':155 'exampl':210 'exchang':81 'export':66 'extrem':178 'feed':80 'financ':16,35,77 'finance-data' 'format':233 'four':59 'gas':85 'generat':93 'geocod':90 'geocoding' 'given':144 'header':172 'infrastructur':88 'input':229 'insight':67 'key':160 'learn':70 'limit':163 'list':221 'low payment fee' 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':69 'made':151 'mani':222 'maxamountrequir':129 'metric':63 'micropayment API' 'network':108 'no-api-key' 'offer':48 'openapi':202 'page':187 'paramet':230 'pay':2,21,54 'pay-per-call API' 'pay-per-request':1,20,53 'payment':149,171 'per':3,22,55,100 'per-request-billing' 'platform':6,25,46 'post':122 'premium':117 'price':79,97,184 'prompt':194 'provid':225 'quot':84 'rate':82,162 'readm':186 'report':64 'request':4,23,56,101,123,175 'request/response':205 'requir':164 'respons':232 'return':189,217 'schema':206 'scheme':156 'sentiment':71 'sentiment-analysis' 'settl':102 'simpli':166 'site':220 'spars':179 'spec':203 'specif':110 'substant':197 'summar':74 'text':73 'text-summarization' 'token':83 'unit':134 'usdc':104,136,145 'usdc-settlement' 'util':18,37,89 'utility-apis' 'valid':91 'via':9,28,152 'wallet':193 'web3':78 'x':170 'x-payment':169 'x402':10,29,43,125,154 'x402 API' 'x402-enabled':42 'x402-payment'","prices":[{"id":"a7ad3c3d-1a34-4d9e-a988-c5349e2beb72","listingId":"ddf8b791-2056-4113-bfb9-4cf17c1b4977","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/orders/43","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:36:40.282Z"}],"sources":[{"listingId":"ddf8b791-2056-4113-bfb9-4cf17c1b4977","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/orders/43","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:40.282Z","lastSeenAt":"2026-04-22T21:30:30.299Z"}],"details":{"listingId":"ddf8b791-2056-4113-bfb9-4cf17c1b4977","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/orders/43 \\\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":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge for /api/v1/orders/43 advertises maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/orders/43"},{"claim":"Available API categories include Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) without subscription commitments","Fetching real-time financial data like token quotes, gas estimates, and exchange rates on a per-call basis","Running data analytics queries and exporting data with pay-as-you-go pricing","Using utility services like geocoding and validation without API key management"],"bestFor":["Agents or developers who want instant, keyless API access with crypto micropayments","Low-volume or sporadic API consumers who don't want monthly subscriptions","x402-compatible agents that can settle payments in USDC on Base"],"notFor":["High-volume consumers who need bulk pricing or rate guarantees","Users who require detailed API documentation, schemas, or SLAs before integration","Consumers who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:47.14Z"},"updatedAt":"2026-04-22T21:30:30.299Z"}}