{"id":"e91f0d73-3bd6-4a8b-aeee-dc04f8383920","shortId":"wwy8tk","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com hosts a collection of pay-per-request API endpoints accessible via the x402 payment protocol on the Base network. This specific endpoint (`/api/resource/8`) is labeled \"Premium API Access\" and accepts POST requests. Payment is settled in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals). No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each request.\n\nThe broader lowpaymentfee.com platform advertises 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 listed endpoints share the same $0.02/request pricing. However, this listing covers only `/api/resource/8`, which is described generically as \"Premium API Access\" without specifying which of these capabilities it maps to.\n\nThe endpoint is live and returns a valid x402 challenge (HTTP 402) with version 1 of the protocol. Documentation on the site is extremely thin — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-endpoint"],"categories":["api","payments"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["The specific functionality of /api/resource/8 is undocumented — 'Premium API Access' is generic and could map to any of the advertised capabilities.","No OpenAPI spec, request schema, or response schema is available.","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no technical content.","Cannot verify what data or service this endpoint actually returns without making a paid request."],"endpointUrl":"https://lowpaymentfee.com/api/resource/8","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/resource/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and the specific purpose of /api/resource/8 is unclear. The docs pages are empty stubs. 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":"2026-04-18T23:50:42.866Z","embedding":[-0.02696228,-0.032714844,0.052001953,0.021530151,0.019622803,-0.033081055,-0.031311035,0.037322998,0.072265625,-0.079589844,0.032714844,-0.053009033,-0.02609253,-0.03152466,-0.042541504,0.0012693405,-0.0041999817,-0.0019369125,-0.037109375,0.023513794,0.0211792,-0.016082764,-0.030273438,0.033721924,0.009292603,-0.013717651,-0.0033988953,-0.00844574,-0.009246826,-0.037109375,0.029296875,-0.027114868,0.0031757355,0.015602112,-0.010009766,-0.022659302,0.0027217865,0.032562256,0.025650024,-0.016601562,-0.0071258545,-0.053710938,0.010108948,-0.012771606,-0.06384277,-0.000831604,0.008735657,-0.024902344,-0.006690979,-0.0012540817,-0.034606934,-0.005870819,-0.0066566467,-0.0026226044,0.011444092,0.005622864,-0.0044441223,-0.0029964447,0.0093307495,0.0155181885,-0.005191803,-0.060180664,-0.012199402,-0.011787415,0.0049324036,0.05923462,-0.015350342,0.04119873,0.017532349,0.057128906,0.038482666,0.060394287,0.02456665,0.01576233,0.0073661804,-0.0011320114,-0.00026154518,0.06726074,-0.007926941,-0.017318726,-0.015914917,-0.0023460388,-0.05102539,-0.0008916855,-0.0154418945,-0.043762207,-0.014007568,0.013725281,-0.01386261,0.028427124,-0.076171875,-0.0016899109,-0.013015747,0.007041931,0.00844574,-0.0038146973,-0.014083862,0.02859497,-0.008522034,0.024459839,0.00655365,-0.041625977,0.011123657,0.013008118,0.041900635,0.05496216,0.027618408,0.025054932,0.018478394,-0.0055885315,-0.020889282,0.01687622,-0.008178711,-0.015068054,0.0070495605,0.002658844,-0.022842407,0.0101623535,-0.022094727,0.015670776,-0.041625977,0.048706055,0.022125244,-0.016647339,0.013793945,-0.043640137,-0.016189575,0.008346558,-0.015174866,-0.0071983337,0.02281189,0.013450623,0.040649414,-0.016189575,-0.03515625,0.006500244,-0.013847351,-0.03503418,-0.05581665,-0.037902832,0.053527832,-0.026031494,0.020828247,0.028686523,-0.091552734,-0.010299683,-0.05392456,0.00044631958,-0.032287598,0.004043579,-0.013771057,0.021392822,-0.023651123,-0.008918762,-0.030456543,-0.029937744,-0.0014772415,0.024780273,-0.019760132,0.053741455,-0.009635925,0.032592773,0.022979736,0.008384705,0.031341553,0.032165527,-0.0017690659,-0.064941406,-0.08892822,-0.0149002075,-0.0025749207,-0.01084137,-0.039764404,0.00579834,-0.004272461,-0.07232666,-0.023544312,-0.005519867,0.0061798096,-0.038085938,-0.0050849915,-0.029434204,0.010169983,-0.008163452,-0.06274414,-0.027908325,-0.029876709,0.06762695,0.026275635,0.023956299,0.0385437,-0.010223389,0.058929443,0.023880005,-0.022003174,-0.035095215,0.023986816,-0.019104004,0.01802063,-0.00274086,0.002494812,-0.025390625,0.042663574,0.060394287,0.016921997,-0.01927185,-0.012359619,-0.052490234,-0.03302002,-0.024276733,0.0062828064,0.02053833,0.008926392,0.037475586,-0.028137207,-0.03692627,0.0024471283,0.0039978027,0.007980347,0.06591797,0.006668091,-0.014884949,0.029876709,0.01914978,-0.046325684,0.036224365,0.03363037,0.018875122,-0.03186035,-0.032714844,0.024932861,0.037902832,-0.020065308,0.0057373047,-0.013504028,0.02406311,-0.008506775,0.008560181,0.030670166,-0.021652222,-0.025878906,-0.033081055,-0.021347046,0.037322998,0.0039978027,-0.027633667,-0.032104492,-0.07659912,0.038238525,0.03604126,0.042114258,-0.018615723,0.01789856,-0.02722168,0.00042653084,-0.06652832,0.059753418,0.0692749,-0.018951416,-0.013717651,0.010177612,-0.016540527,-0.029296875,-0.004310608,-0.012939453,-0.028823853,-0.028244019,0.011413574,-0.043426514,0.0030899048,0.013076782,0.022323608,0.05407715,-0.0015487671,-0.05822754,-0.028747559,0.001824379,-0.007904053,-0.029266357,-0.0031909943,-0.011878967,0.00630188,0.036468506,-0.0073051453,0.029067993,-0.008239746,0.00037002563,-0.0018968582,0.001335144,-0.025222778,-0.024475098,0.015777588,-0.007583618,-0.08276367,-0.000011205673,-0.001285553,0.062347412,-0.060455322,0.03579712,-0.015716553,0.013092041,0.0647583,-0.0066223145,-0.052520752,0.008728027,0.0236969,0.029067993,0.040527344,0.014343262,-0.034576416,-0.0129852295,0.07159424,-0.02520752,-0.012786865,0.0071525574,0.018569946,0.02897644,-0.00077724457,-0.06964111,-0.03125,-0.0059432983,-0.037872314,0.017700195,-0.024917603,0.03427124,-0.02003479,0.0013246536,-0.029556274,-0.008705139,-0.023223877,0.022033691,-0.013771057,0.008178711,-0.014663696,-0.0063171387,0.012275696,0.0152282715,-0.023406982,0.009346008,0.04486084,0.027908325,-0.0024929047,-0.03024292,-0.024291992,-0.016204834,-0.0028324127,0.01625061,0.024551392,0.016677856,0.0501709,-0.033843994,0.021972656,0.03717041,0.022155762,0.038482666,-0.004245758,0.0158844,-0.07196045,-0.054534912,-0.023468018,-0.048950195,0.033081055,0.021438599,0.002336502,0.048706055,0.009864807,-0.021270752,-0.041870117,0.024520874,-0.04321289,-0.0023727417,0.052459717,-0.015083313,-0.026977539,-0.0008125305,0.0047035217,0.011177063,0.040649414,0.020980835,0.012268066,0.07305908,0.040740967,0.0031909943,0.020904541,0.009216309,0.026123047,0.0013055801,-0.027923584,-0.032470703,-0.007888794,0.0181427,-0.015731812,-0.018218994,-0.06542969,0.05569458,0.04486084,0.085510254,0.01914978,0.0055618286,0.031204224,-0.018325806,0.012199402,-0.023406982,-0.018615723,-0.028198242,-0.051605225,0.025634766,-0.00447464,-0.0054855347,-0.018600464,0.031585693,-0.006816864,0.021362305,-0.02078247,0.04660034,0.005367279,-0.008621216,0.021362305,0.0041007996,0.04458618,0.05633545,-0.032348633,0.030273438,0.01386261,-0.03137207,0.0033817291,0.03366089,-0.013580322,-0.013221741,-0.05444336,-0.02067566,-0.00014984608,-0.004917145,-0.05029297,-0.017425537,0.009269714,0.015457153,0.028030396,-0.015640259,-0.018463135,-0.0042800903,-0.010635376,-0.058013916,-0.016067505,-0.0362854,0.0031738281,0.047698975,-0.024154663,-0.013191223,0.018875122,-0.008880615,-0.0034122467,0.020141602,0.025543213,-0.002626419,-0.051513672,0.016525269,0.007534027,0.009506226,0.01789856,0.032043457,0.016830444,0.025161743,0.049743652,0.013870239,-0.015060425,-0.057922363,0.0126953125,-0.052368164,-0.006263733,0.020263672,-0.019821167,-0.009109497,-0.020889282,-0.023071289,-0.023773193,0.008125305,-0.042541504,-0.00008958578,0.027404785,-0.024368286,-0.035247803,-0.053894043,-0.01725769,-0.0017337799,0.06640625,0.03503418,0.005264282,-0.06329346,-0.015113831,0.012420654,0.0077781677,0.019332886,-0.01512146,-0.010810852,-0.014862061,-0.03692627,-0.0018262863,-0.0127334595,0.016647339,-0.003194809,-0.01600647,0.030380249,0.0026607513,0.025527954,-0.002254486,0.015548706,0.027252197,-0.026519775,-0.008850098,-0.012420654,0.036834717,0.0075149536,-0.011405945,-0.050567627,0.040924072,0.01524353,0.035095215,-0.039367676,-0.00623703,-0.009094238,0.0118255615,0.0121154785,-0.017074585,-0.017684937,-0.00434494,-0.05480957,-0.061340332,0.047454834,-0.024261475,0.034088135,0.005470276,0.0049057007,0.009353638,-0.0028324127,0.0051727295,0.02885437,-0.019821167,-0.012863159,-0.031097412,-0.03829956,-0.017745972,-0.011833191,-0.01348114,0.0154800415,-0.026397705,0.011566162,-0.0008907318,-0.025222778,0.017990112,-0.00079488754,0.0029964447,0.01576233,-0.001373291,0.019760132,0.04345703,0.011978149,-0.03717041,0.026412964,0.007980347,0.004901886,-0.009727478,0.041870117,0.028411865,-0.011238098,-0.010597229,-0.012168884,-0.012802124,-0.023590088,0.0029678345,0.0017156601,0.021026611,-0.008056641,-0.03692627,0.02281189,0.018829346,-0.028671265,-0.018447876,0.026489258,0.012573242,-0.030914307,0.027114868,0.030136108,0.060455322,-0.022842407,0.00074100494,0.002494812,0.035614014,0.024978638,0.023757935,-0.017593384,0.020309448,-0.00774765,0.01083374,0.0005016327,-0.015151978,0.017120361,0.0039749146,0.019927979,0.021636963,0.004497528,-0.024154663,-0.03503418,0.008804321,-0.012924194,-0.017150879,0.02444458,0.02154541,0.019454956,-0.018997192,0.021270752,0.009025574,-0.018066406,-0.018676758,-0.0042686462,0.04071045,-0.014152527,-0.02154541,0.01524353,0.014884949,0.042663574,-0.05895996,-0.0068855286,0.0015087128,0.0115737915,-0.026397705,-0.029541016,-0.03741455,0.007751465,0.03479004,0.016860962,0.023284912,0.032928467,-0.0005354881,-0.0074768066,0.028671265,0.0007505417,-0.009536743,-0.019454956,-0.04714966,-0.006210327,-0.0073509216,-0.0019664764,-0.039031982,0.008605957,-0.012397766,-0.027145386,0.011474609,-0.012176514,0.000579834,-0.0118637085,0.013183594,0.03427124,0.0010690689,0.010391235,-0.017562866,-0.026275635,0.007461548,0.008964539,0.021896362,-0.05886841,0.014152527,-0.020126343,-0.0029125214,-0.0017700195,0.019760132,0.033416748,0.03137207,0.0003643036,0.023483276,-0.04168701,0.038482666,-0.03189087,0.007873535,0.015838623,-0.040100098,-0.005569458,-0.01222229,-0.016479492,0.043395996,-0.023895264,-0.008392334,-0.032196045,-0.033447266,-0.012870789,-0.043823242,0.007194519,0.036254883,0.039642334,-0.024368286,-0.006210327,-0.0025749207,0.003255844,-0.019165039,0.014701843,-0.014678955,0.013000488,0.015357971,0.0062408447,-0.026916504,-0.028381348,-0.013725281,-0.0036582947,-0.038879395,-0.040405273,-0.023452759,0.005832672,-0.0075569153,-0.00033402443,-0.025039673,-0.020736694,-0.0022220612,-0.04119873,0.016342163,0.01020813,0.020095825,0.013221741,-0.014305115,0.0042266846,0.017807007,-0.012901306,0.034851074,0.022369385,-0.0011501312,-0.040893555,0.011352539,0.032104492,0.024276733,-0.008781433,-0.007820129,-0.0048980713,-0.019088745,-0.055755615,-0.009681702,-0.0023536682,-0.012023926,-0.011146545,0.0048713684,-0.04901123,0.001291275,-0.023361206,0.0045547485,0.025146484,0.014343262,0.02229309,0.00044584274,0.010215759,-0.00818634,-0.014190674,-0.037994385,0.01927185,0.010681152,0.0013170242,0.017959595,0.051940918,0.004634857,-0.02331543,0.0062789917,-0.0040130615,0.015174866,-0.022415161,0.003320694,-0.015838623,0.004714966,-0.015022278,-0.013885498,-0.04776001,-0.0053367615,0.09692383,-0.008132935,-0.013633728,-0.009376526,-0.011749268,0.023345947,0.025131226,-0.040527344,-0.014770508,-0.036834717,0.017166138,-0.028060913,0.018508911,-0.0013217926,0.02368164,-0.01512146,-0.055480957,-0.017288208,0.005168915,-0.010375977,-0.06048584,-0.023101807,-0.0703125,0.0046043396,-0.008880615,-0.03616333,0.0036754608,0.014122009,-0.012489319,-0.0803833,0.0067596436,0.049224854,0.0075416565,0.026733398,-0.014915466,0.018951416,0.027954102,-0.030136108,-0.015838623,0.030593872,-0.029174805,-0.008155823,-0.028213501,0.017120361,-0.015571594,-0.019821167,0.025024414,-0.0004553795,0.01574707,-0.004184723,0.0057754517,-0.0063819885,0.016921997,-0.008705139,0.02519226,-0.004211426,-0.011123657,0.03048706,-0.03866577,0.022338867,0.022537231,-0.0027980804,0.010543823,0.033203125,0.043395996,-0.04348755,-0.007888794,0.034088135,0.0154800415,0.050109863,-0.028671265,0.03918457,0.018981934,-0.018981934,0.03387451,-0.0071411133,-0.032409668,-0.039154053,-0.016601562,0.026275635,-0.0033073425,0.01789856,-0.025024414,0.0054626465,0.02079773,0.0007491112,0.008880615,-0.019470215,-0.027191162,-0.022567749,0.0013561249,-0.0015392303,-0.00089263916,-0.005115509,0.025939941,0.024291992,0.036376953,0.009567261,-0.014480591,0.008911133,0.023925781,-0.014343262,0.007785797,0.021591187,-0.0037250519,0.015350342,0.016845703,0.005470276,-0.038360596,-0.014823914,-0.033966064,-0.013771057,-0.001241684,-0.0090408325,-0.020645142,-0.0026817322,0.009559631,-0.004119873,-0.028137207,0.016281128,-0.02279663,-0.020355225,-0.0045204163,-0.020690918,0.015266418,0.005268097,0.010505676,0.006958008,-0.0019350052,0.046569824,0.01020813,-0.008552551,0.02911377,0.033111572,0.016204834,-0.020950317,-0.009605408,-0.017166138,-0.0048561096,-0.0017271042,-0.036499023,0.009536743,0.043426514,-0.016235352,0.0034446716,0.0067253113,0.021606445,-0.00497818,0.0059928894,-0.0051727295,0.020599365,-0.010810852,0.030303955,-0.044128418,0.0115737915,0.0068130493,0.0030078888,-0.002855301,-0.0138168335,-0.035003662,0.013961792,0.0024776459,-0.010375977,0.05770874,-0.0011072159,0.020828247,-0.02357483,-0.022918701,0.011482239,-0.030303955,-0.017059326,0.040405273,0.00052309036,-0.00064468384,0.017944336,-0.029434204,0.036010742,-0.026382446,0.027954102,-0.005870819,-0.004085541,-0.0149383545,-0.022537231,-0.015281677,-0.0053863525,-0.005657196,0.0055160522,0.0018291473,0.039276123,0.011985779,0.035705566,0.047943115,0.018569946,0.0090408325,-0.038116455,-0.03189087,0.005104065,-0.0146484375,0.015945435,-0.0154953,0.0541687,0.04437256,-0.0017719269,0.032409668,0.032714844,0.031463623,0.011505127,0.005130768,-0.014778137,0.0032730103,-0.00831604,0.02418518,0.0034389496,0.043914795,-0.030227661,0.027252197,0.012680054,0.031341553,-0.02418518,0.041229248,0.0748291,0.01322937,-0.010635376,0.04019165,-0.00258255,-0.0030136108,-0.0099105835,-0.01776123,0.057434082,0.012184143,0.055114746,0.046691895,0.010726929,-0.006729126,0.016281128,-0.032592773,-0.03302002,0.06695557,0.030593872,-0.019943237,-0.010269165,-0.0143966675,0.00089359283,-0.049743652,-0.033843994,0.018798828,-0.0062561035,0.018844604,-0.0098724365,-0.0037612915,-0.009170532,0.018493652,0.03326416,0.011993408,-0.0141067505,0.026870728,0.033172607,0.0036067963,0.028778076,-0.00831604,0.028564453,-0.028564453,-0.022903442,0.013130188,0.01763916,-0.0075416565,-0.016540527,0.016311646,0.007774353,0.051513672,0.054901123,-0.016296387,0.015167236,0.028564453,0.015960693,-0.0020599365,0.04522705,0.039215088,0.020721436,0.043151855,0.035583496,0.029251099,-0.031402588,0.013046265,-0.003452301,-0.00049877167,-0.0021305084,-0.006210327,0.0018177032,-0.019317627,0.027038574,0.00415802,-0.012374878,0.024215698,0.02331543,-0.0014390945,-0.0027179718,-0.008117676,0.009902954,-0.016540527,-0.0023727417,0.017547607,-0.009017944,0.031402588,0.0066223145,0.034118652,-0.02243042,0.02696228,-0.011245728,-0.023513794,-0.007972717,0.015266418,-0.031341553,0.00089502335,-0.0042037964,0.0063056946,-0.042755127,0.015853882,0.03390503,-0.015640259,0.036376953,0.009735107,-0.0012807846,0.007549286,0.022964478,0.0077285767,-0.009231567,-0.0036621094,-0.022338867,0.03829956,0.03829956,0.0064430237,0.020019531,-0.017440796,0.0021896362,0.004257202,0.0012025833,-0.0023612976,-0.013153076,-0.018310547,-0.030639648,0.011604309,0.03765869,0.020721436,0.045013428,-0.009498596,-0.012641907,0.013061523,0.03277588,0.0005259514,-0.0039596558,-0.0090408325,0.02758789,-0.009544373,0.046966553,0.033477783,-0.00091791153,0.029327393,-0.014503479,-0.023529053,0.0051956177,-0.002571106,0.026687622,-0.009796143,0.008369446,-0.0053901672,0.028274536,-0.026550293,-0.039123535,0.0008611679,-0.0067977905,-0.009414673,-0.028015137,0.008674622,0.0065231323,0.020645142,0.04244995,0.00919342,-0.0317688,0.061920166,-0.012748718,0.04446411,-0.007331848,-0.00655365,0.049713135,0.026809692,0.041381836,0.022476196,0.019241333,-0.038146973,0.020141602,0.03967285,0.021881104,0.008270264,0.0049591064,-0.021362305,0.036468506,0.0020599365,0.028503418,-0.0093307495,-0.0005950928,0.014030457,-0.0018148422,-0.0024414062,0.005970001,-0.00712204,0.0143585205,0.050598145,-0.03111267,-0.010314941,-0.018798828,-0.018218994,0.03366089,-0.0017719269,0.003692627,0.0017080307,-0.028167725,0.013412476,-0.02748108,-0.021270752,0.008918762,0.032562256,-0.035247803,-0.022506714,0.0017986298,0.022659302,-0.02670288,0.02722168,0.022872925,0.0041770935,0.013595581,0.046661377,-0.008811951,0.030776978,-0.013664246,0.015319824,0.03277588,0.003648758,-0.025604248,0.0023059845,0.005783081,-0.016662598,0.011169434,0.035125732,-0.016174316,0.010665894,0.0033664703,-0.014831543,0.008453369,0.0067634583,-0.004257202,-0.0037021637,-0.012611389,-0.0209198,-0.0033607483,0.0052490234,0.0019702911,0.0034446716,-0.0104904175,-0.003314972,0.013114929,0.033111572,0.026763916,-0.03668213,0.0014162064,0.006500244,0.013923645,-0.020126343,-0.014862061,-0.0006327629,-0.032409668,0.017654419,0.0059432983,0.0023479462,0.011672974,-0.01625061,0.004348755,0.031066895,0.018951416,0.0119018555,-0.0017271042,-0.0029716492,0.021713257,-0.017242432,-0.0045700073,-0.0038700104,-0.007160187,0.017318726,0.0154800415,-0.012481689,-0.027145386,0.028274536,-0.004211426,0.022064209,0.009025574,-0.018707275,0.019943237,-0.010360718,-0.007980347,0.0037879944,0.023132324,-0.00484848,-0.016647339,-0.014862061,0.028778076,0.05822754,-0.018569946,-0.0029582977,0.025238037,0.012680054,0.018615723,0.032470703,0.0058403015,0.035095215,0.029373169,-0.027435303,-0.0209198,0.026382446,-0.01083374,-0.03488159,0.017868042,-0.0070495605,-0.018341064,0.015098572,0.008270264,-0.0038757324,-0.030410767,-0.011161804,-0.0068855286,-0.019836426,0.0110321045,-0.015403748,0.010925293,-0.025680542,-0.00793457,0.005970001,-0.02192688,-0.04437256,-0.022964478,0.00035500526,-0.00843811,-0.04586792,0.010276794,-0.026657104,0.008628845,-0.020401001,-0.0044822693,-0.009979248,0.036376953,-0.018859863,-0.010398865,0.00046277046,0.02684021,0.02003479,0.010871887,0.027923584,-0.014846802,-0.037322998,-0.025680542,-0.0024929047,-0.0035381317,0.02468872,0.002357483,0.033355713,0.02494812,-0.00459671,0.00039243698,-0.014030457,-0.004737854,-0.008171082,-0.023895264,-0.021697998,0.01663208,0.013122559,-0.0137786865,-0.008460999,0.047180176,-0.015960693,-0.018951416,0.020980835,0.049682617,0.0038661957,0.031463623,-0.0087890625,-0.0118637085,-0.0056533813,0.009140015,-0.013381958,0.01159668,0.012039185,-0.0021400452,-0.0017585754,0.00217247,0.025726318,-0.010040283,-0.00667572,0.022415161,-0.0014162064,-0.0154800415,0.033355713,0.010536194,0.0054130554,-0.014305115,-0.011695862,0.01828003,0.037200928,0.018508911,0.007980347,-0.002155304,0.0034656525,-0.013023376,0.011184692,0.018630981,-0.014335632,-0.031402588,-0.022232056,-0.03237915,0.020568848,0.005126953,0.012802124,-0.008590698,0.015266418,-0.027160645,-0.026931763,-0.022125244,0.029296875,0.014266968,-0.008232117,-0.010345459,-0.00015497208,0.009635925,-0.028961182,-0.0068855286,-0.041870117,-0.033172607,-0.0074882507,-0.019805908,0.013961792,0.013450623,-0.008125305,-0.0011901855,0.0007510185,-0.0016994476,0.0012931824,0.02470398,-0.017150879,-0.00043606758,0.025222778,0.003856659,-0.025009155,0.025161743,-0.009506226,-0.0019931793,0.020370483,-0.00894928,0.012176514,-0.016311646,0.035583496,0.0028953552,-0.0013408661,0.027542114,-0.0067100525,0.015312195,-0.03366089,0.016235352,0.0005645752,0.003982544,0.035003662,-0.02772522,-0.02243042,0.012550354,-0.022827148,-0.03616333,-0.0066452026,0.02281189,0.041168213,-0.015716553,0.042236328,-0.015731812,-0.011550903,0.021713257,0.008384705,-0.016860962,-0.0004017353,0.038208008,0.0021762848,-0.008018494,0.0043182373,-0.012435913,-0.028503418,-0.013343811,0.015838623,-0.0057678223,-0.011878967,0.030166626,0.005619049,0.050048828,-0.005104065,0.022033691,0.007659912,0.012619019,0.023254395,0.0058898926,0.044952393,0.006702423,-0.013504028,0.010734558,0.0009794235,-0.022094727,-0.008415222,-0.0065727234,0.0030727386,-0.042144775,0.014083862,-0.005218506,0.03250122,-0.0256958,0.015731812,-0.026489258,-0.013076782,-0.03503418,-0.007751465,-0.02508545,0.012886047,0.040618896,-0.0006990433,0.021499634,0.012229919,-0.028686523,0.018569946,0.047912598,0.0041770935,-0.022415161,-0.018432617,0.009155273,0.00073957443,-0.0004503727,0.008026123,-0.010192871,-0.018600464,0.0031089783,-0.010543823,0.014503479,0.005455017,0.015335083,0.005306244,-0.008399963,0.0010814667,0.027450562,-0.011253357,-0.0060577393,0.0074882507,0.00598526,0.036712646,0.02859497,-0.010101318,0.014572144,0.019989014,-0.03579712,0.050445557,-0.008705139,0.021240234,-0.019180298,0.008880615,-0.04260254,-0.020141602,-0.014556885,0.0075149536],"createdAt":"2026-04-18T18:38:29.143Z","updatedAt":"2026-04-22T19:30:51.293Z","lastSeenAt":"2026-04-22T19:30:51.293Z","tsv":"'/api/resource/8':55,169 '/request':13,28,162 '0.02':12,27,86,161 '000':81 '0x8335':71 '1':201 '20':80 '2913':72 '402':198 '6':91 'Base network API' 'USDC micropayment API' 'accept':62 'access':7,22,42,60,177 'across':119 'advertis':117 'ai':129 'amount':78 'analysi':133 'analyt':123 'api':6,21,40,59,94,176,214 'attach':105 'avail':244 'base':9,24,50,74,82 'base-network' 'broader':114 'call':4,19 'caller':103 'capabl':183 'categori':121 'challeng':196 'classif':136 'collect':34 'commit':100 'connect':223 'contract':70 'convers':153 'cover':167 'crawl':247 'crypto-paid API' 'data':122,126 'decim':92 'describ':172 'detail':230 'doc':213 'document':205,239 'embed':137 'endpoint':41,54,118,157,188 'equal':85 'estim':147 'exampl':243 'exchang':142 'export':127 'extrem':210 'feed':141 'financ':138 'four':120 'gas':146 'generat':154 'generic':173 'geocod':151 'header':109 'host':32 'howev':164 'http':197 'infrastructur':149 'insight':128 'key':95 'label':57 'learn':131 'limit':97 'list':156,166 'live':190 'lowpaymentfee' 'lowpaymentfee.com':31,115 'machin':130 'map':185 'materi':248 'maximum':77 'metric':124 'network':51 'no-api-key' 'openapi':234 'page':218 'pay':2,17,37 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':36 'payment':46,65,108 'per':3,18,38,87 'platform':116 'post':63 'post-endpoint' 'premium':5,20,58,175 'premium API access' 'price':140,163,215 'prompt':225 'protocol':47,204 'quot':145 'rate':96,143 'readm':217 'render':220 'report':125 'request':39,64,88,112 'request/response':237 'requir':102 'return':192 'schema':238 'sentiment':132 'settl':67 'share':158 'simpli':104 'site':208 'spec':235 'specif':53 'specifi':179 'summar':135 'technic':229 'text':134 'thin':211 'token':144 'unit':83 'upfront':99 'usag':242 'usdc':15,30,69,89 'usdc-settlement' 'use':90 'util':150 'valid':152,194 'version':200 'via':10,25,43 'wallet':224 'web3':139 'without':178 'x402':11,26,45,107,195 'x402 API' 'x402-payment'","prices":[{"id":"9ff2d068-b644-4f64-9314-b9776cc77678","listingId":"e91f0d73-3bd6-4a8b-aeee-dc04f8383920","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/resource/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:29.143Z"}],"sources":[{"listingId":"e91f0d73-3bd6-4a8b-aeee-dc04f8383920","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/resource/8","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:29.143Z","lastSeenAt":"2026-04-22T19:30:51.293Z"}],"details":{"listingId":"e91f0d73-3bd6-4a8b-aeee-dc04f8383920","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/resource/8 \\\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":"Endpoint returns HTTP 402 with x402 version 1 challenge requiring USDC payment on Base","source_url":"https://lowpaymentfee.com/api/resource/8"},{"claim":"maxAmountRequired is 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02","source_url":"https://lowpaymentfee.com/api/resource/8"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API resources with per-call USDC micropayments on Base","Agent-driven workflows that need keyless, on-demand API access","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers experimenting with x402 payment-gated APIs","AI agents that can settle USDC payments on Base per request","Users who want no-commitment, pay-as-you-go API access"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume consumers who need bulk pricing or subscription plans","Developers not set up with USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:41.766Z"},"updatedAt":"2026-04-22T19:30:51.293Z"}}