{"id":"3dbecfd4-ec59-417d-a31b-c0ceb744f120","shortId":"LAczz3","kind":"x402","title":"Pay-per-call premium API endpoint on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API endpoint on Base via x402 — $0.02/request in USDC.","description":"This endpoint at `/api/endpoint-70` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are accessed via the x402 payment 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 `/api/endpoint-70` is labeled \"Premium API Access\" but its exact functionality is not documented beyond that generic title. It does not appear in the site's listed API catalog (which uses `/api/v1/` and `/api/v2/` path prefixes), so its purpose is unclear. The x402 challenge confirms it is live and accepts POST requests, requiring up to 20,000 base units of USDC (0.02 USD) per call on the Base network. The response MIME type is `application/json`.\n\nDocumentation on the site is extremely thin — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what this particular endpoint returns. Prospective users should be aware that while the payment mechanism is functional, the actual service behind this endpoint is undocumented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","post-method"],"categories":["api","payments"],"synonyms":["x402 API","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","premium API access","crypto-paid endpoint"],"warnings":["Endpoint functionality is entirely undocumented — 'Premium API Access' is a generic label with no specifics","This endpoint path (/api/endpoint-70) does not appear in the site's listed API catalog","All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no content","No OpenAPI schema or request/response examples available","Cannot determine what data or service this endpoint actually provides"],"endpointUrl":"https://lowpaymentfee.com/api/endpoint-70","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/endpoint-70","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but the endpoint's actual functionality is completely undocumented. No OpenAPI schema, no request/response examples, and the docs pages are empty. The generic title 'Premium API Access' provides no insight into what the endpoint does.","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":"2026-04-18T23:52:52.841Z","embedding":[-0.02722168,-0.036193848,0.038360596,0.018554688,0.001493454,-0.029708862,-0.026672363,0.044830322,0.08874512,-0.073913574,0.020401001,-0.054107666,-0.029815674,-0.039733887,-0.031173706,0.012565613,-0.015090942,0.003768921,-0.035186768,0.019744873,0.022232056,-0.017807007,-0.03111267,0.037109375,0.0009455681,-0.01461792,-0.014526367,-0.0058555603,-0.0042419434,-0.037750244,0.040405273,-0.022598267,0.004421234,0.0046195984,-0.021484375,-0.017440796,0.005592346,0.03656006,0.031555176,-0.012550354,-0.0064468384,-0.06542969,-0.01965332,-0.006679535,-0.055847168,-0.0109939575,0.0035858154,-0.020843506,0.00032687187,0.0030460358,-0.03640747,-0.004009247,-0.0031433105,-0.002981186,-0.0030212402,-0.0021381378,0.003982544,-0.019302368,0.009376526,0.025634766,0.0063438416,-0.07556152,-0.015670776,-0.014350891,-0.0015096664,0.0491333,-0.016296387,0.056518555,0.009780884,0.05480957,0.04748535,0.05114746,0.017044067,0.024139404,-0.007045746,0.008407593,0.0134887695,0.061828613,-0.011947632,-0.013061523,-0.030929565,-0.0051345825,-0.047943115,0.0013513565,-0.022460938,-0.043914795,-0.032196045,0.01008606,-0.02166748,0.028320312,-0.07067871,-0.005996704,-0.012969971,0.0057754517,-0.0039405823,-0.011924744,-0.023025513,0.022583008,-0.00868988,0.023040771,0.013031006,-0.03677368,0.012336731,0.007965088,0.038360596,0.039123535,0.027893066,0.029342651,0.019180298,-0.0211792,-0.021194458,0.018707275,-0.009277344,-0.0038375854,0.015914917,0.014892578,-0.008041382,0.014251709,-0.018829346,0.02520752,-0.044952393,0.05307007,0.009666443,-0.0178833,0.020477295,-0.040008545,-0.0013246536,0.019882202,-0.031066895,-0.0046577454,0.023895264,0.011436462,0.03527832,-0.023742676,-0.03375244,0.007183075,-0.025909424,-0.015281677,-0.04711914,-0.037017822,0.03286743,-0.038848877,0.029281616,0.033813477,-0.09667969,-0.010894775,-0.041748047,0.0055885315,-0.03591919,0.0068893433,-0.00008738041,0.02017212,-0.010520935,-0.006088257,-0.023803711,-0.019577026,0.0074653625,0.033599854,-0.034851074,0.057769775,-0.0015583038,0.028076172,0.020553589,0.014930725,0.037994385,0.03665161,0.0050315857,-0.07116699,-0.087768555,-0.026626587,0.0039711,-0.017608643,-0.036499023,0.0045776367,-0.01071167,-0.056121826,-0.026184082,-0.022094727,-0.004020691,-0.039855957,0.010612488,-0.03338623,0.010437012,0.0022468567,-0.06896973,-0.032958984,-0.026123047,0.06756592,0.025726318,0.012992859,0.046173096,-0.016693115,0.06512451,0.008712769,-0.026031494,-0.032470703,0.021728516,-0.015945435,0.007785797,0.0008535385,-0.002664566,-0.033935547,0.027786255,0.06604004,0.025054932,-0.013832092,-0.0132751465,-0.047790527,-0.030670166,-0.031433105,0.008575439,0.017990112,0.013244629,0.047912598,-0.016998291,-0.043182373,0.000008761883,0.012229919,0.011016846,0.059051514,0.01184082,-0.0016794205,0.01689148,0.018829346,-0.039916992,0.03466797,0.025741577,0.016983032,-0.031066895,-0.033721924,0.017837524,0.03225708,-0.023345947,0.011634827,-0.020339966,0.042388916,-0.012321472,0.012588501,0.022338867,-0.009567261,-0.014289856,-0.036834717,-0.028945923,0.02180481,0.0038700104,-0.022125244,-0.033996582,-0.081848145,0.0463562,0.04019165,0.045013428,-0.0021972656,0.01474762,-0.018310547,-0.011108398,-0.06008911,0.04928589,0.071777344,-0.028518677,-0.008636475,0.0095825195,-0.01448822,-0.037841797,0.00023043156,-0.009841919,-0.02923584,-0.025650024,0.0030441284,-0.047454834,-0.003276825,0.009605408,0.031707764,0.047790527,0.004009247,-0.056427002,-0.017349243,-0.0050354004,0.013198853,-0.031921387,-0.0060920715,-0.0009822845,0.012145996,0.026947021,-0.0055351257,0.030258179,-0.012901306,0.0014762878,0.0013923645,0.013755798,-0.010368347,-0.023498535,0.020858765,-0.011817932,-0.07116699,0.005458832,-0.00819397,0.07733154,-0.050689697,0.034301758,-0.014350891,0.010131836,0.0602417,-0.015792847,-0.051818848,0.012840271,0.020065308,0.030258179,0.04208374,-0.009094238,-0.036224365,-0.012954712,0.0597229,-0.014312744,-0.009742737,0.01751709,0.01071167,0.028701782,0.00680542,-0.053375244,-0.023956299,-0.009376526,-0.024368286,0.017242432,-0.018447876,0.026123047,-0.024612427,-0.0044288635,-0.028793335,0.002714157,-0.027404785,0.019226074,-0.025619507,0.00086450577,-0.01133728,0.007419586,0.026138306,0.014350891,-0.007106781,0.0044403076,0.036132812,0.027450562,-0.0107421875,-0.026504517,-0.024795532,-0.0077934265,0.014259338,0.024856567,0.02406311,0.022460938,0.04397583,-0.051757812,0.019943237,0.03729248,0.022094727,0.05001831,-0.01638794,0.015090942,-0.0680542,-0.056121826,-0.026870728,-0.03942871,0.035858154,0.0068893433,-0.002702713,0.053619385,0.015403748,-0.0158844,-0.048919678,0.027130127,-0.045440674,-0.012176514,0.044525146,-0.0029640198,-0.015571594,-0.004638672,0.005645752,0.012199402,0.025146484,0.014732361,0.00982666,0.06628418,0.048339844,-0.0025730133,0.026428223,-0.0012454987,0.0141067505,0.0021686554,-0.020935059,-0.03186035,-0.0112838745,0.020141602,-0.006298065,-0.013908386,-0.08154297,0.062347412,0.04449463,0.07861328,0.00869751,0.0004620552,0.03451538,-0.023376465,0.006942749,-0.024398804,-0.012527466,-0.018447876,-0.04901123,0.030441284,-0.019470215,-0.00491333,-0.021774292,0.033935547,-0.004562378,0.023925781,-0.025802612,0.05831909,0.01033783,-0.007320404,0.01675415,0.0060195923,0.047332764,0.05657959,-0.044006348,0.035247803,0.029541016,-0.03778076,0.021484375,0.039123535,-0.024169922,-0.011672974,-0.0592041,-0.01713562,-0.004901886,-0.007835388,-0.050933838,0.0020313263,0.0075683594,0.013374329,0.030700684,-0.014167786,-0.022262573,-0.012252808,-0.017166138,-0.06604004,-0.013290405,-0.022506714,0.013031006,0.05883789,-0.01121521,-0.0045661926,0.007949829,-0.0064582825,-0.0053520203,0.0034275055,0.0030345917,-0.008895874,-0.037322998,0.024108887,0.011764526,0.021484375,0.008850098,0.029464722,0.013923645,0.020568848,0.042022705,0.013908386,-0.011360168,-0.06866455,0.018539429,-0.056518555,0.0016183853,0.010025024,-0.015388489,0.0011940002,-0.022583008,-0.025863647,-0.033416748,0.0023059845,-0.021774292,0.009468079,0.020645142,-0.027267456,-0.039215088,-0.046783447,-0.017074585,0.0043182373,0.06451416,0.02394104,0.003768921,-0.058258057,-0.01335907,0.033416748,0.008964539,0.016296387,-0.014732361,-0.018325806,-0.020111084,-0.029647827,-0.010787964,-0.017730713,0.018218994,-0.011123657,-0.009437561,0.032592773,0.004585266,0.03567505,0.0054779053,0.013656616,0.049438477,-0.024642944,-0.007583618,-0.023101807,0.047973633,0.004169464,-0.025650024,-0.049102783,0.044799805,0.021057129,0.03475952,-0.030258179,-0.0015611649,-0.0026054382,0.018463135,0.010658264,-0.0070533752,-0.013801575,-0.006046295,-0.059143066,-0.059448242,0.04248047,-0.018188477,0.024047852,0.009918213,0.008399963,0.021148682,0.00843811,0.005264282,0.021362305,-0.025253296,-0.009681702,-0.032318115,-0.03262329,-0.016860962,-0.011238098,-0.021408081,0.017044067,-0.02357483,0.014251709,0.0038642883,-0.023284912,0.02166748,0.0010404587,0.0027446747,0.015350342,-0.008232117,0.013847351,0.036590576,0.012893677,-0.040740967,0.026123047,0.0008702278,0.009597778,-0.0041275024,0.050445557,0.03527832,-0.0026760101,-0.0041275024,-0.0050201416,-0.011146545,-0.026107788,0.004917145,0.0055122375,0.025726318,-0.0016450882,-0.036376953,0.03225708,0.0009851456,-0.032318115,-0.018157959,0.017791748,0.010368347,-0.033477783,0.01638794,0.021942139,0.06347656,-0.03164673,0.0019216537,0.010826111,0.029022217,0.03414917,0.017532349,-0.022827148,0.017089844,-0.0016412735,0.02017212,0.00038075447,-0.005970001,0.012901306,-0.001964569,0.034332275,0.021865845,0.0047836304,-0.019500732,-0.023132324,-0.0062217712,-0.0090789795,-0.022460938,0.012458801,0.036590576,0.02658081,-0.026245117,0.024612427,0.014038086,-0.014633179,-0.02508545,-0.005176544,0.030883789,-0.021347046,-0.0211792,0.011932373,0.015853882,0.03591919,-0.053649902,-0.009239197,0.0063438416,0.011634827,-0.027404785,-0.037750244,-0.038085938,0.012458801,0.024215698,0.014434814,0.018295288,0.03186035,0.002380371,-0.0002655983,0.026062012,0.0018692017,-0.01436615,-0.01687622,-0.039215088,-0.0035820007,-0.00068473816,-0.0017776489,-0.02571106,0.0017824173,-0.012863159,-0.03225708,0.009086609,-0.0110321045,-0.003686905,-0.011444092,0.016464233,0.02519226,0.0021572113,0.009773254,-0.022949219,-0.030670166,0.0031375885,0.0037956238,0.016189575,-0.053344727,0.013313293,-0.017715454,0.006175995,0.0061035156,0.027694702,0.017456055,0.026397705,0.0015506744,0.021347046,-0.052459717,0.025848389,-0.032196045,0.015670776,0.021957397,-0.044830322,0.0010519028,-0.026031494,-0.022598267,0.036865234,-0.009994507,-0.019256592,-0.030517578,-0.036956787,-0.016311646,-0.051940918,0.022918701,0.035736084,0.02508545,-0.033935547,0.00048971176,-0.0028495789,-0.0013618469,-0.00995636,0.011276245,-0.0154800415,0.014877319,0.025604248,0.0135269165,-0.031402588,-0.023117065,-0.021499634,-0.011436462,-0.03213501,-0.044067383,-0.02053833,0.0044822693,-0.006679535,-0.003232956,-0.03375244,-0.016525269,-0.0025615692,-0.04824829,0.01739502,0.013343811,0.011070251,0.01058197,-0.015960693,0.0033626556,0.018997192,-0.016586304,0.033233643,0.016525269,-0.0056114197,-0.04083252,0.0011863708,0.029785156,0.021133423,0.005241394,-0.01084137,0.0017194748,-0.01184845,-0.06109619,-0.00248909,-0.008903503,0.0015821457,-0.002691269,0.0037555695,-0.04522705,-0.00022757053,-0.018356323,0.010391235,0.019515991,0.012161255,0.019470215,-0.0017356873,0.007858276,-0.013374329,-0.021347046,-0.03265381,0.026855469,0.010673523,0.0017156601,0.027297974,0.0440979,0.015327454,-0.0029010773,0.0056152344,0.001156807,0.023651123,-0.026611328,0.003408432,-0.01096344,0.00045275688,-0.021987915,-0.02041626,-0.0418396,-0.00031113625,0.08673096,-0.009422302,-0.0063285828,-0.0129470825,-0.021743774,0.022232056,0.020706177,-0.035583496,-0.003993988,-0.03466797,0.024887085,-0.018005371,0.015457153,0.0051651,0.026412964,-0.02796936,-0.049224854,-0.015281677,0.0039634705,-0.016296387,-0.06695557,-0.023712158,-0.067993164,-0.014076233,0.0017366409,-0.019485474,0.008018494,0.013618469,-0.009681702,-0.08428955,-0.0027217865,0.049621582,0.011955261,0.017211914,-0.017791748,0.018203735,0.017547607,-0.028244019,-0.015426636,0.03970337,-0.032989502,0.00063943863,-0.028793335,0.024124146,-0.015007019,-0.026473999,0.018539429,0.008377075,0.010665894,-0.01259613,0.007408142,-0.0049095154,0.010421753,-0.011299133,0.029815674,-0.007282257,-0.016082764,0.03111267,-0.05340576,0.02229309,0.029281616,-0.006778717,0.004611969,0.021316528,0.038726807,-0.042266846,-0.011436462,0.023513794,0.016967773,0.039733887,-0.025756836,0.031341553,0.017944336,-0.0124053955,0.02204895,-0.0023727417,-0.021743774,-0.04876709,-0.022323608,0.028625488,-0.008842468,0.01600647,-0.024398804,0.004535675,0.009819031,-0.001414299,0.011543274,-0.0134887695,-0.02619934,-0.014785767,-0.009712219,0.00045132637,-0.006629944,-0.0025806427,0.021331787,0.017425537,0.02960205,0.014434814,-0.010314941,0.014381409,0.018356323,-0.021316528,0.014015198,0.026229858,-0.0008621216,0.015312195,0.017730713,0.016738892,-0.03363037,-0.010864258,-0.017791748,0.001367569,-0.00060129166,-0.008163452,-0.022277832,-0.011871338,-0.002752304,-0.0019140244,-0.035583496,0.006275177,-0.026687622,-0.027511597,-0.013465881,-0.019927979,0.008956909,0.00491333,0.012176514,0.024978638,0.0038661957,0.032562256,0.0020389557,-0.018676758,0.02381897,0.030700684,0.021194458,-0.028030396,0.011726379,-0.0042877197,-0.0033798218,0.007911682,-0.030258179,0.009468079,0.039489746,-0.013000488,0.008796692,0.0056648254,0.027633667,-0.01737976,0.013832092,-0.007282257,0.022781372,-0.00737381,0.035308838,-0.05178833,0.009803772,0.024124146,0.006137848,-0.0021190643,-0.015007019,-0.029541016,0.02130127,0.0126953125,-0.012825012,0.041778564,-0.00818634,0.020309448,-0.030410767,-0.005634308,0.0043411255,-0.037475586,-0.019821167,0.044403076,0.0038051605,0.0017223358,0.017990112,-0.03125,0.03604126,-0.029708862,0.02558899,-0.0020580292,0.009307861,-0.01259613,-0.026641846,-0.012268066,-0.015640259,-0.007637024,-0.0014190674,0.0022850037,0.048309326,0.01600647,0.027297974,0.048553467,0.0044937134,0.0035762787,-0.04067993,-0.02796936,0.006702423,-0.028625488,0.02897644,-0.023239136,0.0592041,0.045654297,-0.0062332153,0.034484863,0.035461426,0.022918701,0.005302429,0.002779007,-0.009567261,-0.00068187714,-0.007663727,0.020629883,0.007583618,0.04788208,-0.025100708,0.034118652,0.019729614,0.026489258,-0.028625488,0.03878784,0.06591797,0.021438599,-0.016845703,0.031555176,-0.004032135,-0.013465881,-0.008369446,-0.012878418,0.05810547,0.012084961,0.059265137,0.04724121,0.007801056,-0.01436615,0.018661499,-0.027877808,-0.020904541,0.06524658,0.023483276,-0.0234375,-0.0044898987,-0.002822876,0.00017547607,-0.05657959,-0.04425049,0.0127334595,-0.008872986,0.007949829,-0.003686905,0.0043678284,-0.019546509,0.028884888,0.027160645,0.017028809,-0.013404846,0.029174805,0.03375244,0.0033817291,0.018310547,-0.005039215,0.024932861,-0.019317627,-0.015853882,0.019104004,0.018844604,-0.0059051514,-0.015701294,0.013122559,0.012672424,0.050323486,0.04498291,-0.012367249,0.016662598,0.040252686,0.015701294,-0.007083893,0.045135498,0.030273438,0.009857178,0.045166016,0.030303955,0.027999878,-0.035308838,0.019470215,0.0006542206,0.008491516,-0.0141067505,-0.008918762,0.0006327629,-0.019454956,0.014053345,0.0053138733,-0.018127441,0.02407837,0.038024902,-0.00034165382,0.0028381348,-0.011383057,0.0026359558,-0.017211914,-0.010375977,0.015655518,-0.010368347,0.037139893,0.008979797,0.039031982,-0.023773193,0.029754639,0.0042495728,-0.0067977905,-0.0017547607,0.028945923,-0.037994385,0.0135650635,0.0055351257,-0.005092621,-0.05038452,0.017501831,0.026977539,-0.0115356445,0.033294678,0.001045227,-0.0028381348,0.017318726,0.024520874,0.008964539,-0.000374794,-0.0051994324,-0.024230957,0.04458618,0.039733887,0.0043678284,0.007785797,-0.017150879,-0.0046424866,0.0023498535,-0.0038318634,-0.01638794,-0.019058228,-0.025604248,-0.037994385,0.01727295,0.0385437,0.024642944,0.042510986,-0.0025749207,-0.01071167,0.007457733,0.026397705,0.010444641,-0.008049011,-0.010902405,0.020202637,-0.01260376,0.06060791,0.03152466,0.010551453,0.02532959,-0.014930725,-0.032592773,0.0037956238,-0.001991272,0.021392822,-0.005302429,0.007118225,-0.007472992,0.028701782,-0.018722534,-0.04348755,0.008613586,-0.016174316,-0.021621704,-0.026901245,-0.0008854866,0.01713562,0.03250122,0.038635254,0.017074585,-0.029754639,0.06689453,-0.01449585,0.049743652,-0.012718201,-0.004650116,0.049865723,0.033111572,0.04196167,0.022598267,0.020599365,-0.041259766,0.013313293,0.04168701,0.018325806,0.012237549,-0.0064315796,-0.01890564,0.038970947,0.0064315796,0.024658203,-0.008033752,-0.010269165,0.014762878,-0.0014047623,0.011711121,0.00059890747,-0.0049743652,0.0039863586,0.037139893,-0.03363037,-0.0053482056,-0.024276733,-0.008796692,0.03314209,-0.002494812,0.0073165894,0.0024967194,-0.026412964,0.016738892,-0.03652954,-0.02104187,-0.0005264282,0.02458191,-0.038391113,-0.01007843,0.0029239655,0.012329102,-0.012641907,0.022277832,0.023040771,-0.0012331009,0.0109939575,0.045318604,-0.008560181,0.035186768,-0.017608643,0.021438599,0.0287323,0.0005750656,-0.018676758,0.0129852295,0.017852783,-0.024749756,0.011512756,0.03744507,-0.011230469,0.0044403076,-0.010498047,-0.02079773,0.009269714,0.0026226044,0.00079488754,0.000058710575,-0.01914978,-0.015296936,-0.0013685226,0.004283905,0.0046653748,0.0025920868,-0.015625,-0.014579773,0.013648987,0.050872803,0.024337769,-0.04647827,0.0040016174,0.0014295578,0.009284973,-0.02758789,-0.010231018,-0.008201599,-0.0284729,0.010528564,0.009506226,0.0028820038,0.022354126,-0.020751953,0.0049324036,0.017303467,0.020996094,0.019134521,0.0031642914,0.0138549805,0.017990112,-0.013397217,-0.004020691,-0.00491333,-0.0023975372,0.012840271,0.014823914,-0.004043579,-0.023757935,0.030090332,-0.00868988,0.025268555,0.005744934,-0.018859863,0.021957397,-0.015182495,-0.009025574,0.005302429,0.01033783,-0.008033752,-0.021270752,-0.01158905,0.02960205,0.051818848,-0.018814087,-0.0016641617,0.02784729,0.00919342,0.01524353,0.025054932,0.008239746,0.044403076,0.030075073,-0.013381958,-0.019210815,0.016403198,-0.0038414001,-0.029724121,0.022521973,-0.013435364,-0.017623901,0.014915466,0.02168274,0.0006799698,-0.01965332,-0.019897461,-0.012825012,-0.016448975,0.023422241,-0.015670776,0.01625061,-0.020736694,-0.008865356,-0.0023555756,-0.014541626,-0.043914795,-0.03152466,-0.003818512,-0.014953613,-0.04196167,0.015113831,-0.036346436,0.015403748,-0.02017212,-0.00982666,-0.01928711,0.028579712,-0.008422852,-0.008628845,0.012641907,0.016937256,0.02029419,0.010055542,0.024246216,-0.024597168,-0.033691406,-0.016738892,-0.008460999,-0.0038051605,0.018722534,0.004863739,0.044647217,0.017974854,0.00061798096,-0.003917694,-0.006702423,-0.010749817,-0.0056533813,-0.028289795,-0.0031490326,0.015945435,0.0035533905,-0.00793457,-0.004875183,0.036193848,-0.026321411,-0.015930176,0.03164673,0.047058105,0.01008606,0.029342651,-0.0035324097,-0.0082092285,-0.0063095093,0.0059928894,-0.022506714,0.015136719,0.0042495728,0.0038337708,-0.014419556,0.00081157684,0.023254395,-0.004131317,-0.013137817,0.022399902,-0.008850098,-0.0062065125,0.03503418,0.012359619,0.0115737915,-0.010437012,-0.012458801,0.020126343,0.026123047,0.017318726,0.0036010742,-0.00040483475,0.009178162,-0.011550903,0.006412506,0.020385742,-0.013702393,-0.037200928,-0.009635925,-0.033325195,0.021240234,0.0073547363,0.015403748,-0.01184845,0.01576233,-0.017105103,-0.03475952,-0.018463135,0.02659607,0.017425537,-0.0138168335,-0.009796143,-0.0014467239,0.014823914,-0.020767212,0.00021326542,-0.033355713,-0.028869629,-0.0043945312,-0.025405884,0.016098022,0.013084412,-0.012336731,-0.0066223145,-0.0008740425,-0.001033783,-0.006351471,0.034698486,-0.01776123,-0.0030174255,0.020324707,0.014167786,-0.0206604,0.015609741,-0.0158844,-0.00061511993,0.022094727,-0.007019043,0.009788513,-0.013893127,0.037109375,-0.002872467,-0.011756897,0.024734497,-0.0040779114,0.015510559,-0.029907227,0.01689148,0.0005464554,0.0005531311,0.026870728,-0.03225708,-0.023132324,0.011741638,-0.017440796,-0.035186768,0.004283905,0.025527954,0.040405273,-0.012969971,0.03729248,-0.011062622,-0.018585205,0.020202637,0.0026569366,-0.01878357,-0.0034809113,0.033081055,0.006668091,-0.019195557,-0.009536743,-0.016647339,-0.035308838,-0.0063972473,0.01374054,0.0028381348,-0.0033168793,0.024780273,0.003982544,0.036895752,-0.0006632805,0.018081665,0.012710571,0.009109497,0.026275635,0.0087509155,0.04925537,0.006843567,-0.034301758,0.01448822,-0.0008029938,-0.018554688,-0.014801025,-0.013595581,0.001502037,-0.037078857,0.022567749,-0.002292633,0.026626587,-0.010826111,0.00548172,-0.021560669,-0.004310608,-0.0385437,-0.0135650635,-0.022705078,0.012321472,0.035217285,-0.0060195923,0.023452759,0.01109314,-0.022644043,0.009338379,0.042053223,-0.006679535,-0.031341553,-0.009552002,0.018356323,0.0054855347,0.011100769,0.004055023,-0.010368347,-0.023620605,0.0010061264,-0.016693115,0.0053253174,0.0010166168,0.0135269165,0.007949829,0.009162903,0.010246277,0.034942627,-0.0063667297,-0.0057907104,0.0044136047,0.007171631,0.03189087,0.0284729,-0.010498047,0.019989014,0.022720337,-0.032073975,0.053222656,0.0031604767,0.022628784,-0.015151978,-0.0060691833,-0.044067383,-0.023422241,-0.024276733,0.004020691],"createdAt":"2026-04-18T18:38:41.749Z","updatedAt":"2026-04-22T19:30:52.590Z","lastSeenAt":"2026-04-22T19:30:52.590Z","tsv":"'/api/endpoint-70':34,99 '/api/v1':129 '/api/v2':131 '/request':13,28 '0.02':12,27,83,159 '000':154 '20':153 'Base network API' 'USDC pay-per-call' 'accept':147 'access':65,95,104 'actual':228 'advertis':80 'ai':54 'analyt':53 'api':6,21,50,88,103,125,183 'appear':119 'application/json':172 'awar':219 'base':9,24,76,155,165 'base-network' 'behind':230 'beyond':112 'call':4,19,162 'catalog':126 'challeng':141 'collect':44 'confirm':142 'connect':191 'content':197 'crypto-paid endpoint' 'data':52 'descript':208 'doc':181 'document':111,173 'endpoint':7,22,32,63,98,213,232 'exact':107 'exampl':205 'extrem':178 'financ':57 'flat':82 'function':108,226 'generic':114 'infrastructur':60 'instant':94 'json-response' 'key':89 'label':101 'learn':56 'limit':92 'list':124 'live':145 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':55 'mechan':224 'micropayment API' 'mime':169 'network':77,166 'offer':42 'openapi':201 'page':186 'part':36 'particular':212 'path':132 'pay':2,17,47 'pay-per-cal':1,16 'pay-per-request':46 'payment':69,223 'per':3,18,48,84,161 'platform':40,79 'post':148 'post-method' 'prefix':133 'premium':5,20,102 'premium API access' 'price':182 'prompt':193 'prospect':215 'protocol':70 'purpos':136 'rate':91 'readm':185 'render':188 'request':49,85,149 'request/response':204 'requir':150 'respons':168 'return':214 'schema':202 'servic':229 'settl':71 'site':122,176 'span':51 'specif':97 'substant':196 'thin':179 'titl':115 'type':170 'unclear':138 'undocu':234 'unit':156 'usd':160 'usdc':15,30,73,158 'usdc-settlement' 'use':128 'user':216 'util':61 'via':10,25,66 'wallet':192 'web3':58 'x402':11,26,68,140 'x402 API' 'x402-payment'","prices":[{"id":"26dfd7ff-49d9-49d7-a5d5-7dcddfb81cc5","listingId":"3dbecfd4-ec59-417d-a31b-c0ceb744f120","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/endpoint-70","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:41.749Z"}],"sources":[{"listingId":"3dbecfd4-ec59-417d-a31b-c0ceb744f120","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/endpoint-70","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:41.749Z","lastSeenAt":"2026-04-22T19:30:52.590Z"}],"details":{"listingId":"3dbecfd4-ec59-417d-a31b-c0ceb744f120","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/endpoint-70 \\\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":"The platform charges $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge requires up to 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network","source_url":"https://lowpaymentfee.com/api/endpoint-70"},{"claim":"The site lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a pay-per-call API without requiring API keys or subscriptions","Agent-driven workflows that need on-demand API calls settled in USDC on Base","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers exploring x402 payment-gated APIs","Agents that can settle USDC micropayments on Base","Users who want keyless, commitment-free API access"],"notFor":["Users who need documented request/response schemas before integrating","Applications requiring free or fiat-settled API access","Production workloads that depend on well-documented endpoint behavior"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:41.005Z"},"updatedAt":"2026-04-22T19:30:52.590Z"}}