{"id":"e82045e0-b26a-4e25-8521-110d8e823dc0","shortId":"85TV5Z","kind":"x402","title":"Pay-per-request API platform on Base network via x402 — $0.02/call in USDC.","tagline":"Pay-per-request API platform on Base network via x402 — $0.02/call in USDC.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of pay-per-request endpoints across data analytics, AI/ML inference, finance/Web3, and utility services. All endpoints are priced at $0.02 per request, paid in USDC on the Base network, with no API keys, no rate limits, and no subscriptions required. The x402 protocol handles payment inline: callers attach a payment header to each request and receive the response immediately upon settlement.\n\nThe specific endpoint at `/api/v1/orders/39` is listed as \"Premium API Access\" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) on Base. The platform advertises additional endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, gas estimates, geocoding, validation, conversion, and data export — all at the same $0.02 price point.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed descriptions of what each endpoint actually returns. The endpoint probed here (`/api/v1/orders/39`) has a generic name and no indication of what data or functionality it provides beyond the label \"Premium API Access.\"","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","data-analytics","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","geocoding","utility-services"],"categories":["api-marketplace","llm","finance","geo"],"synonyms":["low payment fee","x402 API","pay per call API","USDC API","Base network API","micropayment API","crypto API gateway"],"warnings":["Documentation pages (/docs, /pricing, /api, /README) all render only 'Connect wallet' with no usable content","No OpenAPI or schema available — request and response formats are unknown","The endpoint path /api/v1/orders/39 with description 'Premium API Access' gives no indication of what data or service it actually provides","The broader platform advertises many endpoints (AI, finance, utils) but none have documented schemas or examples"],"endpointUrl":"https://lowpaymentfee.com/api/v1/orders/39","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/39","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, confirming it accepts USDC payments on Base at $0.02. However, documentation is essentially nonexistent — all doc/pricing/README pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and the specific endpoint's purpose ('Premium API Access' on /orders/39) is unclear. The listing 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":"2026-04-18T20:08:21.121Z","embedding":[-0.026885986,-0.031677246,0.01939392,0.0035991669,0.030181885,-0.036254883,-0.036834717,0.0423584,0.062805176,-0.064086914,0.023544312,-0.047180176,-0.031555176,-0.03463745,-0.010246277,0.004459381,0.0055999756,0.0020160675,-0.03567505,0.05117798,0.02545166,-0.0051574707,-0.03677368,0.017669678,-0.012252808,-0.013694763,0.0019798279,-0.0061416626,-0.016235352,-0.03491211,0.037994385,-0.025817871,-0.0013246536,0.0084991455,-0.0068244934,-0.007949829,-0.0051460266,0.04815674,0.02609253,-0.004257202,0.005569458,-0.068847656,0.008102417,-0.00932312,-0.050964355,-0.0057792664,0.017105103,-0.026687622,-0.0049057007,0.0018482208,-0.044677734,0.008003235,-0.013664246,-0.002199173,0.007972717,0.016433716,-0.010009766,-0.0074653625,0.0044784546,0.0052604675,-0.00075531006,-0.06628418,-0.023666382,0.0020942688,0.0014572144,0.056640625,-0.007205963,0.03765869,0.009162903,0.06719971,0.032684326,0.048217773,0.041534424,0.00037646294,0.010063171,0.0062065125,-0.0031776428,0.05596924,-0.010650635,-0.023925781,-0.020736694,-0.01940918,-0.03878784,-0.004146576,-0.01537323,-0.06341553,-0.024398804,0.02368164,-0.0284729,0.023040771,-0.06506348,-0.0020217896,-0.0087890625,0.0003900528,0.010681152,0.0010147095,-0.010482788,0.03010559,-0.02168274,0.018569946,-0.0054740906,-0.04208374,0.0048561096,0.014465332,0.039520264,0.05831909,0.021759033,0.019973755,0.004837036,-0.009727478,-0.0335083,0.012168884,-0.008293152,-0.01675415,0.008255005,0.011512756,-0.021270752,0.021255493,-0.03515625,0.02684021,-0.04989624,0.042236328,0.017868042,0.0018224716,-0.012176514,-0.049041748,-0.019042969,0.002105713,-0.022384644,-0.020370483,0.025634766,0.01058197,0.020904541,-0.020050049,-0.03414917,0.006729126,-0.011985779,0.0040779114,-0.049926758,-0.02861023,0.030548096,-0.0395813,0.025650024,0.033203125,-0.10247803,-0.016494751,-0.058532715,0.006877899,-0.029525757,-0.0071525574,-0.0011796951,0.022491455,-0.026489258,-0.034454346,-0.021835327,-0.028579712,-0.008270264,0.025283813,-0.012214661,0.042633057,-0.016815186,0.024124146,0.014602661,-0.0009813309,0.018432617,0.029006958,-0.005859375,-0.082458496,-0.086242676,-0.03414917,-0.0076560974,-0.009811401,-0.026062012,-0.009567261,0.015075684,-0.06390381,-0.023406982,-0.00605011,-0.0013513565,-0.037353516,-0.0044937134,-0.021911621,0.010406494,-0.010635376,-0.041748047,-0.019180298,-0.041015625,0.06402588,0.011482239,0.029785156,0.018707275,-0.004673004,0.061920166,0.03048706,-0.0030384064,-0.019088745,0.0073623657,-0.014450073,0.02696228,-0.001004219,0.01159668,-0.028060913,0.037384033,0.07458496,-0.002161026,-0.02798462,-0.0070533752,-0.06298828,-0.04220581,-0.026168823,0.02368164,0.009422302,-0.014503479,0.022399902,-0.043670654,-0.044403076,-0.013755798,0.023040771,0.018341064,0.064086914,0.012184143,-0.0061798096,0.02809143,0.01965332,-0.050598145,0.045562744,0.042144775,0.0055007935,-0.030853271,-0.03387451,0.032043457,0.041625977,-0.02835083,0.012786865,-0.031433105,0.021987915,-0.0074806213,0.020217896,0.019577026,-0.026535034,-0.014877319,-0.032165527,-0.003063202,0.031311035,0.01777649,-0.026489258,-0.03213501,-0.078430176,0.051696777,0.044677734,0.03152466,0.006767273,-0.0055389404,-0.033966064,-0.014907837,-0.0703125,0.052581787,0.07910156,-0.000497818,-0.011672974,0.018997192,0.0047798157,-0.019973755,0.0042152405,-0.0028209686,-0.023239136,-0.0053100586,-0.00021636486,-0.05206299,-0.002029419,0.0143585205,0.019943237,0.04714966,-0.0039634705,-0.05203247,-0.014801025,0.00365448,-0.008155823,-0.023361206,-0.0024757385,-0.0015039444,0.008598328,0.03591919,-0.0018291473,0.01448822,-0.00004941225,0.018127441,-0.0047836304,-0.010528564,-0.013336182,-0.026916504,0.008926392,0.012237549,-0.062927246,0.013366699,-0.012878418,0.07885742,-0.04360962,0.03552246,-0.008872986,0.0317688,0.044067383,-0.0040283203,-0.034423828,0.008880615,0.023666382,0.021392822,0.047973633,0.003250122,-0.024124146,-0.010536194,0.0904541,-0.012718201,0.0068130493,0.0069618225,0.0070343018,0.04586792,-0.0052337646,-0.042053223,-0.042907715,-0.008964539,-0.042419434,0.028869629,-0.018692017,0.02748108,-0.010070801,0.0017328262,-0.022033691,0.002286911,-0.022827148,0.011138916,-0.011749268,0.0072517395,-0.024139404,-0.031311035,0.00094795227,0.025024414,-0.01158905,0.021514893,0.04043579,0.026382446,-0.010261536,-0.04135132,-0.03829956,-0.00945282,-0.0020523071,0.018325806,0.023284912,0.021072388,0.049102783,-0.041168213,-0.0076408386,0.027694702,-0.0008468628,0.048675537,0.00068569183,0.012062073,-0.06878662,-0.045959473,-0.025512695,-0.04626465,0.03152466,0.03074646,-0.0033779144,0.059326172,0.0067596436,-0.01184082,-0.029968262,0.008377075,-0.044555664,0.0022182465,0.04650879,-0.027770996,-0.037506104,0.006401062,-0.0027561188,0.0076675415,0.033843994,0.0075569153,0.033294678,0.061676025,0.04449463,0.0010967255,0.038879395,0.005970001,0.022064209,0.010192871,-0.02027893,-0.030563354,-0.008468628,0.026916504,-0.03111267,-0.013183594,-0.05529785,0.05859375,0.041809082,0.093811035,0.0048980713,0.006416321,0.043640137,-0.010055542,0.006664276,-0.010002136,-0.010665894,-0.042144775,-0.044158936,0.021759033,-0.01928711,-0.005004883,-0.018920898,0.036132812,-0.0009007454,0.022216797,-0.021743774,0.03857422,-0.013793945,-0.0015916824,0.008285522,0.004219055,0.051879883,0.044891357,-0.042236328,0.0143966675,0.026657104,-0.034057617,0.0024147034,0.03778076,-0.020874023,-0.005584717,-0.051086426,-0.037322998,-0.023712158,0.0012989044,-0.0625,0.010353088,0.0009560585,0.02166748,0.027328491,-0.014801025,-0.01864624,-0.0015010834,-0.027145386,-0.057647705,0.0007195473,-0.038024902,0.010513306,0.04171753,-0.012702942,-0.0067214966,-0.0051994324,-0.014381409,-0.00073194504,0.015945435,0.025970459,0.002527237,-0.050201416,0.024398804,-0.0079574585,0.011154175,0.029006958,0.03375244,0.051330566,0.02444458,0.04067993,0.00793457,-0.021713257,-0.06323242,0.0051612854,-0.039093018,0.007972717,0.0031814575,-0.012458801,-0.010513306,-0.008277893,-0.023742676,-0.01751709,0.019821167,-0.020751953,0.008605957,0.03665161,-0.024459839,-0.021102905,-0.05606079,-0.021377563,-0.0076408386,0.07696533,0.019104004,-0.01776123,-0.054718018,-0.0154953,0.024032593,0.0020809174,0.030227661,-0.014724731,-0.0005412102,-0.009529114,-0.038635254,-0.019882202,-0.020935059,0.02557373,-0.014579773,-0.0019702911,0.021331787,0.002790451,0.011604309,-0.010818481,0.0018796921,0.027770996,-0.019119263,-0.0037727356,-0.02017212,0.036254883,0.006652832,-0.00071048737,-0.0335083,0.04837036,0.010375977,0.03652954,-0.036987305,-0.0069389343,-0.010620117,0.011024475,0.028656006,-0.016494751,-0.006477356,-0.004673004,-0.03842163,-0.06072998,0.042266846,-0.02986145,0.024932861,0.013404846,0.014305115,0.030593872,-0.017303467,0.0102005005,0.024627686,-0.02532959,-0.00818634,-0.008422852,-0.039398193,-0.013511658,-0.013519287,-0.026168823,0.030700684,-0.017242432,0.016845703,-0.0053367615,-0.024414062,0.038482666,0.0047912598,-0.0013370514,0.021118164,0.0077323914,0.023391724,0.046295166,0.015533447,-0.049682617,0.030044556,-0.0015869141,0.019195557,-0.006916046,0.050598145,0.031066895,-0.013420105,-0.0051002502,-0.0031967163,-0.019577026,-0.02154541,0.001285553,0.00028324127,0.007820129,-0.004760742,-0.03262329,0.007835388,0.0067749023,-0.012283325,-0.024459839,0.011947632,0.006439209,-0.03768921,0.016174316,0.03390503,0.055755615,-0.019927979,0.01134491,0.003250122,0.023376465,0.022918701,0.015701294,-0.013244629,0.018310547,-0.007335663,0.0078048706,-0.004852295,-0.015388489,0.022094727,-0.0030612946,0.022094727,0.028427124,0.011222839,-0.034301758,-0.03677368,0.00894165,-0.01574707,-0.02279663,0.03225708,0.019622803,0.02722168,-0.031463623,0.018417358,0.007583618,-0.025863647,-0.024612427,-0.022705078,0.047607422,-0.006652832,-0.004425049,0.0184021,0.010513306,0.017669678,-0.046539307,-0.005680084,0.005554199,0.011154175,-0.013465881,-0.035858154,-0.034423828,0.0012187958,0.040527344,0.012054443,0.014816284,0.02772522,-0.0005159378,0.013793945,0.017150879,-0.00944519,-0.013809204,-0.01146698,-0.051513672,-0.020309448,-0.012428284,0.009468079,-0.030654907,0.014320374,-0.0032844543,-0.021850586,0.0010185242,-0.017150879,-0.007171631,-0.009483337,-0.00094890594,0.03842163,0.0017900467,0.018798828,-0.016723633,-0.026855469,-0.0056419373,0.00970459,0.011817932,-0.04788208,0.011917114,-0.011367798,-0.008361816,-0.006011963,0.019378662,0.0073623657,0.024291992,0.018554688,0.040924072,-0.02468872,0.04257202,-0.03552246,0.020080566,-0.008583069,-0.04006958,-0.01448822,-0.027908325,-0.012466431,0.040222168,-0.031707764,-0.008354187,-0.0141067505,-0.03540039,-0.01939392,-0.06185913,0.009025574,0.03289795,0.037506104,-0.020889282,-0.004306793,0.0012331009,0.010604858,-0.009315491,0.007820129,-0.01739502,0.028839111,0.025314331,-0.0057373047,-0.023483276,-0.025283813,-0.009498596,0.00242424,-0.040496826,-0.04751587,-0.016235352,0.00390625,-0.0079422,-0.0060043335,-0.031097412,-0.03866577,-0.0014591217,-0.03668213,0.017730713,0.006793976,0.012565613,0.0038051605,-0.025421143,0.0034236908,0.011726379,-0.018676758,0.023910522,-0.0040397644,-0.021606445,-0.042785645,0.010345459,0.027938843,0.028121948,-0.002105713,-0.020095825,0.0023460388,-0.013641357,-0.047851562,-0.0050354004,-0.015312195,-0.0068244934,0.0026302338,0.0068855286,-0.057159424,-0.008895874,-0.034423828,0.0011253357,0.028656006,0.02532959,0.0010023117,-0.010017395,0.006614685,0.00484848,-0.007160187,-0.039489746,0.009941101,0.010559082,-0.00045275688,0.027404785,0.05545044,-0.007637024,-0.010009766,-0.005897522,0.012718201,0.017105103,-0.022659302,0.0034980774,-0.032409668,0.019210815,-0.010879517,-0.01121521,-0.04849243,-0.00995636,0.07147217,-0.0029182434,0.0018434525,-0.0024356842,-0.010383606,0.020019531,0.022613525,-0.041809082,-0.0025291443,-0.010650635,0.013534546,-0.019958496,0.010414124,-0.0023517609,0.027359009,-0.020492554,-0.050109863,-0.019866943,-0.008026123,-0.028640747,-0.07019043,-0.031799316,-0.08062744,0.0031166077,-0.011077881,-0.025802612,0.00017380714,0.008987427,-0.0234375,-0.076049805,-0.0011024475,0.055908203,-0.0018291473,0.0335083,-0.013755798,0.015838623,0.03262329,-0.030563354,-0.0018863678,0.022277832,-0.027282715,-0.027938843,-0.016220093,0.017745972,-0.010604858,-0.0121536255,0.0078048706,-0.000071167946,0.009971619,-0.017791748,0.014656067,-0.011520386,0.024642944,-0.020477295,0.02482605,-0.012107849,-0.0119018555,0.04144287,-0.04788208,0.020843506,0.005958557,-0.017486572,0.0065193176,0.03225708,0.03189087,-0.037139893,-0.022384644,0.027023315,0.01876831,0.021865845,-0.019424438,0.045166016,0.011878967,-0.015296936,0.004257202,-0.0014448166,-0.02645874,-0.03591919,-0.05203247,0.023483276,-0.0018339157,0.010093689,-0.012969971,0.004119873,0.015960693,0.001991272,0.006000519,-0.021469116,-0.027832031,-0.020050049,0.0067596436,-0.010940552,0.008560181,0.0052719116,0.026473999,0.02406311,0.044189453,0.009925842,-0.0068511963,0.018676758,0.02947998,-0.019134521,-0.003484726,0.017532349,0.0035171509,0.017089844,0.022964478,0.023010254,-0.05596924,-0.016052246,-0.033355713,-0.009887695,-0.003850937,-0.011962891,-0.012428284,-0.011817932,0.0003118515,-0.0048599243,-0.04168701,0.0044136047,-0.026748657,-0.022659302,-0.010154724,-0.018676758,0.02003479,0.011657715,-0.0017175674,0.008285522,-0.011985779,0.052856445,-0.008132935,-0.014671326,0.024154663,0.04675293,0.025848389,-0.033294678,-0.010040283,-0.0029716492,-0.009941101,0.0045280457,-0.027069092,0.016204834,0.039611816,-0.012420654,-0.0033893585,-0.00065279007,0.031951904,-0.012893677,0.005710602,-0.017501831,0.0116119385,-0.0012903214,0.041137695,-0.053375244,0.0060806274,0.013923645,0.00008332729,-0.011016846,-0.01486969,-0.021972656,0.020889282,0.002231598,-0.014175415,0.054138184,0.0015277863,0.022476196,-0.03189087,-0.0259552,0.0049705505,-0.01876831,-0.026062012,0.027664185,-0.0073547363,0.005882263,0.020080566,-0.014892578,0.0340271,-0.036499023,0.00844574,0.013641357,0.023040771,-0.0046577454,-0.009742737,-0.016448975,-0.0052223206,-0.011016846,-0.0028095245,-0.0016155243,0.038970947,0.017822266,0.03074646,0.046081543,0.014816284,0.009506226,-0.035583496,-0.020858765,-0.0012750626,-0.01637268,0.021575928,-0.016525269,0.043395996,0.03677368,0.017440796,0.033447266,0.025482178,0.042907715,-0.0021095276,0.011230469,-0.014595032,0.013244629,-0.015930176,0.020904541,-0.0031585693,0.037506104,-0.034606934,0.023101807,0.01108551,0.025772095,-0.022521973,0.03338623,0.0625,0.019485474,-0.0026168823,0.045135498,-0.004711151,-0.008964539,-0.0069847107,-0.021575928,0.05319214,0.0073890686,0.039093018,0.043701172,-0.002483368,-0.0029735565,0.02545166,-0.040618896,-0.020263672,0.047088623,0.025970459,-0.027770996,-0.0017166138,0.0020980835,0.0056533813,-0.045684814,-0.022262573,0.010025024,0.00434494,-0.0050086975,0.00018060207,-0.016235352,-0.022232056,0.010925293,0.021621704,0.009971619,-0.019546509,0.017562866,0.032165527,0.0041007996,0.027908325,-0.00045228004,0.028930664,-0.031463623,-0.022964478,0.015556335,0.0075645447,-0.010467529,-0.011680603,0.028900146,-0.0032615662,0.037261963,0.037322998,-0.012397766,0.005630493,0.023391724,0.0146865845,-0.001367569,0.06109619,0.03894043,0.0181427,0.03479004,0.039154053,0.031982422,-0.03427124,0.0058898926,-0.010429382,0.005958557,-0.01939392,-0.021026611,0.013427734,-0.0054092407,0.020767212,0.00063180923,-0.00579834,0.020614624,0.029388428,0.008972168,-0.008033752,-0.016662598,0.012649536,-0.028533936,-0.009101868,0.013404846,-0.0037727356,0.04135132,0.01965332,0.03463745,-0.033813477,0.026779175,-0.0063056946,-0.012382507,0.00806427,0.01939392,-0.042419434,0.0073547363,-0.0066223145,0.001909256,-0.036621094,0.0026073456,0.024475098,-0.019058228,0.014602661,0.019073486,-0.0018205643,-0.020401001,0.017532349,0.024673462,-0.0082473755,-0.014266968,-0.020065308,0.026916504,0.040618896,0.0025177002,0.0057144165,-0.02645874,0.008804321,-0.0015535355,-0.0140686035,0.0003528595,0.00024676323,-0.017791748,-0.010917664,0.021835327,0.036102295,0.02078247,0.04940796,-0.017852783,-0.0063667297,0.005844116,0.033569336,0.011314392,0.0018291473,0.0058403015,0.01927185,-0.01902771,0.0435791,0.031677246,0.011947632,0.02571106,0.002040863,-0.00472641,0.011688232,-0.01979065,0.017700195,-0.013198853,-0.000045597553,-0.0069885254,0.022705078,-0.010986328,-0.039764404,0.004386902,-0.017807007,-0.01953125,-0.015853882,0.014465332,-0.0023212433,0.023803711,0.048919678,0.02696228,-0.028121948,0.058776855,-0.026138306,0.047943115,-0.0021152496,-0.010406494,0.05722046,0.019607544,0.036865234,0.016403198,0.011329651,-0.029022217,0.017440796,0.035736084,0.025634766,0.011528015,0.011924744,-0.008354187,0.040222168,0.0020141602,0.036071777,-0.00089645386,0.003955841,0.01537323,-0.005207062,-0.004447937,-0.008644104,-0.008232117,0.0041618347,0.05050659,-0.01473999,-0.008934021,-0.028762817,-0.019821167,0.02041626,-0.012084961,-0.00365448,0.0037631989,-0.0262146,0.010223389,-0.038085938,-0.017669678,0.00843811,0.021652222,-0.053466797,-0.007926941,0.011672974,0.031982422,-0.028305054,0.027511597,0.019332886,-0.008232117,0.018936157,0.04324341,-0.012054443,0.03189087,-0.00548172,0.032470703,0.025466919,0.0073928833,-0.018371582,0.0053253174,0.014556885,-0.007347107,0.013420105,0.038238525,-0.014541626,-0.005382538,-0.008201599,-0.0065956116,0.0023975372,0.012321472,-0.008621216,0.006767273,-0.00079345703,-0.002046585,0.0132751465,0.0073623657,-0.0038280487,0.0024776459,-0.0018568039,-0.0121536255,0.016021729,0.037261963,0.024032593,-0.023071289,0.010093689,0.008110046,0.002544403,-0.01864624,-0.016921997,-0.0032653809,-0.027755737,0.0072364807,0.009559631,0.014762878,0.0074920654,-0.02319336,0.0007715225,0.029556274,0.011199951,0.009635925,-0.00012230873,-0.007881165,0.010627747,-0.0032653809,-0.009346008,-0.0008163452,-0.014984131,-0.013084412,0.016616821,-0.0030899048,-0.031951904,0.011154175,-0.0036411285,0.0040779114,-0.0016555786,-0.012702942,0.017532349,-0.015838623,-0.010559082,0.005050659,0.009712219,-0.008552551,-0.00806427,-0.013786316,0.051574707,0.051483154,-0.0126953125,-0.017593384,0.018798828,0.013374329,0.015327454,0.04421997,0.005672455,0.043701172,0.022781372,-0.020095825,-0.017807007,0.018981934,-0.011756897,-0.026275635,0.012741089,-0.01675415,-0.005039215,0.01600647,0.0068473816,-0.0032653809,-0.026672363,-0.014961243,-0.016342163,-0.014762878,0.014877319,-0.0042686462,0.011154175,-0.017654419,-0.0126953125,0.009773254,-0.02911377,-0.04562378,-0.019577026,-0.0017633438,-0.013282776,-0.05166626,-0.008102417,-0.031951904,0.0035209656,-0.015052795,-0.006149292,-0.007709503,0.022476196,-0.019851685,0.0010137558,0.006008148,0.02519226,0.014175415,0.0058898926,0.023986816,-0.025390625,-0.017715454,-0.034942627,0.0032405853,-0.00919342,0.025558472,0.009223938,0.039855957,0.024154663,-0.0072631836,-0.0065460205,-0.015281677,-0.00047802925,-0.016143799,-0.03338623,-0.025482178,0.018753052,0.017242432,-0.0049362183,-0.0071411133,0.040283203,-0.026306152,-0.008094788,0.010681152,0.039093018,0.016601562,0.0256958,-0.012741089,-0.0070610046,-0.01600647,-0.0071792603,-0.007118225,0.00063467026,0.009857178,-0.0012216568,-0.0032672882,-0.006046295,0.029754639,-0.019210815,-0.011787415,0.03463745,0.008514404,-0.0071868896,0.05206299,0.019134521,0.000073850155,-0.017486572,-0.010871887,0.030914307,0.053497314,0.01096344,0.023925781,0.003791809,0.0029773712,-0.01739502,0.009269714,0.024154663,-0.017654419,-0.049072266,-0.010604858,-0.043151855,0.030960083,-0.0010566711,0.009651184,-0.00592041,0.010848999,-0.013969421,-0.034362793,-0.019500732,0.026184082,0.0072898865,-0.01386261,-0.0069885254,0.009880066,0.010108948,-0.038360596,-0.002292633,-0.042175293,-0.020843506,-0.027252197,-0.010017395,0.03668213,0.009140015,-0.009254456,-0.004634857,-0.0010585785,-0.001458168,-0.006187439,0.022705078,-0.010055542,0.00038862228,0.019851685,0.023147583,-0.025512695,0.022918701,-0.010627747,0.004878998,0.005264282,-0.013175964,0.02557373,-0.013641357,0.025299072,-0.0036258698,-0.017074585,0.030303955,0.0037403107,0.018127441,-0.037994385,0.00459671,0.00043940544,0.0032615662,0.031799316,-0.021530151,-0.022476196,0.014656067,-0.02406311,-0.026931763,0.004108429,0.025299072,0.021820068,-0.012290955,0.040100098,-0.009056091,-0.0058288574,0.006591797,0.014419556,-0.021636963,0.006664276,0.042938232,0.0011606216,0.005794525,0.003622055,-0.008033752,-0.030227661,-0.010322571,0.008964539,-0.0026302338,-0.019317627,0.029785156,0.009223938,0.052978516,-0.015571594,0.020751953,0.014175415,-0.0076408386,0.03491211,0.00983429,0.0496521,0.0024757385,-0.032989502,0.0078125,-0.003004074,-0.024658203,0.00774765,-0.003364563,0.003332138,-0.022399902,0.012512207,-0.005180359,0.023605347,-0.026306152,0.01335907,-0.025619507,-0.022888184,-0.03414917,-0.0066871643,-0.03353882,0.01473999,0.04650879,0.0020332336,0.02279663,0.002527237,-0.032440186,0.030227661,0.053497314,0.002243042,-0.031341553,-0.018722534,0.012435913,-0.0079422,0.0055999756,0.010978699,-0.015327454,-0.027755737,0.012672424,-0.015235901,-0.007144928,-0.008590698,0.021911621,0.010513306,0.0020828247,-0.0043945312,0.029312134,0.00068950653,0.002861023,-0.00015938282,0.01259613,0.032806396,0.03378296,-0.014190674,0.020858765,0.013328552,-0.043945312,0.06304932,-0.015014648,0.026809692,-0.016296387,0.017120361,-0.034423828,-0.03048706,-0.012893677,0.0015325546],"createdAt":"2026-04-18T18:32:21.911Z","updatedAt":"2026-04-23T21:31:33.917Z","lastSeenAt":"2026-04-23T21:31:33.917Z","tsv":"'/api/v1/orders/39':110,210 '/call':13,28 '0.02':12,27,64,132,163 '000':126 '20':125 '402':120 'Base network API' 'USDC API' 'access':116,230 'across':50 'actual':204 'addit':138 'advertis':137 'ai-inference' 'ai/ml':53 'analysi':142 'analyt':52 'api':5,20,37,76,115,172,229 'attach':92 'base':8,23,72,127,134 'beyond':225 'broad':42 'caller':91 'catalog':43 'challeng':121 'classif':145 'classification' 'connect':181 'content':187 'convers':155 'crypto API gateway' 'data':51,157,220 'data-analytics' 'descript':199 'detail':198 'doc':171 'document':166 'embed':146 'embeddings' 'enabl':36 'endpoint':49,60,108,139,203,207 'estim':152 'exampl':195 'exchang':149 'export':158 'extrem':168 'feed':148 'finance-data' 'finance/web3':55 'function':222 'gas':151 'generic':213 'geocod':153 'geocoding' 'handl':88 'header':95 'i.e':131 'immedi':103 'indic':217 'infer':54 'inlin':90 'key':77 'label':227 'limit':80 'list':112 'low payment fee' 'lowpaymentfee.com':31 'micropayment API' 'name':214 'network':9,24,73 'no-api-key' 'offer':40 'openapi':191 'page':176 'paid':67 'pay':2,17,46 'pay per call API' 'pay-per-request':1,16,45 'payment':89,94 'per':3,18,47,65 'platform':6,21,38,136 'point':165 'premium':114,228 'price':62,147,164,173 'probe':208 'prompt':183 'protocol':87 'provid':224 'rate':79,150 'readm':175 'receiv':100 'render':178 'request':4,19,48,66,98,122 'request/response':194 'requir':84 'respons':102 'return':118,205 'schema':192 'sentiment':141 'sentiment-analysis' 'servic':58 'settlement':105 'spars':169 'specif':107 'subscript':83 'summar':144 'text':143 'text-summarization' 'unit':128 'upon':104 'usdc':15,30,69,130 'usdc-base-network' 'util':57 'utility-services' 'valid':154 'via':10,25 'wallet':182 'x402':11,26,35,86 'x402 API' 'x402-enabled':34 'x402-payment'","prices":[{"id":"85e7fbf8-a987-476a-9582-42f7179070b6","listingId":"e82045e0-b26a-4e25-8521-110d8e823dc0","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/39","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:21.911Z"}],"sources":[{"listingId":"e82045e0-b26a-4e25-8521-110d8e823dc0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/orders/39","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:21.911Z","lastSeenAt":"2026-04-23T21:31:33.917Z"}],"details":{"listingId":"e82045e0-b26a-4e25-8521-110d8e823dc0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/orders/39 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge for /api/v1/orders/39 requests maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/orders/39"},{"claim":"Platform offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing AI inference (sentiment, summarization, classification, embeddings) without API key management","Fetching real-time crypto prices, gas estimates, and exchange rates on a per-call basis","Running geocoding, validation, or data conversion utilities with instant crypto micropayments","Exporting analytics data or generating reports via pay-per-request endpoints"],"bestFor":["Developers who want zero-signup, pay-as-you-go API access","Agents and bots that can settle x402 payments in USDC on Base","Projects needing low-cost micropayment-gated API calls without subscriptions"],"notFor":["Users who need detailed API documentation or OpenAPI schemas before integrating","High-volume production workloads that need SLAs, rate-limit guarantees, or support contracts","Developers without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:59.882Z"},"updatedAt":"2026-04-23T21:31:33.917Z"}}