{"id":"76298960-4233-4ad4-a50c-461a1b6caf07","shortId":"SnrhnF","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request, no API keys required.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request, no API keys required.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a broad set of endpoints across data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints are pay-per-request using USDC on the Base network, settled via the x402 protocol. There are no API keys, no rate limits, and no subscription commitments — callers simply attach an x402 payment header to each request.\n\nThe specific endpoint at `/api/v1/transfers/80` is listed as \"Premium API Access\" and requires a maximum of 20,000 base units of USDC (0.02 USDC, i.e., $0.02) per call. The platform also advertises additional endpoint categories including sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and data export — all at the same $0.02 per request 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 description of what the `/api/v1/transfers/80` endpoint actually returns. The endpoint is live (returns a valid 402 challenge), but without documentation it is unclear what data or functionality \"Premium API Access\" provides beyond the generic label.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","no-api-key","no-rate-limit","http-post"],"categories":["api-platform","infrastructure"],"synonyms":["x402 API","micropayment API","pay-per-call API","USDC API","Base network API","lowpaymentfee","crypto-paid API"],"warnings":["No documentation available — all doc/pricing/API/README pages render only 'Connect wallet'","No OpenAPI or schema describing request parameters or response format","The purpose of '/api/v1/transfers/80' ('Premium API Access') is completely undocumented","Cannot verify what data or functionality this specific endpoint provides"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transfers/80","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/transfers/80","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 402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and no description of what 'Premium API Access' at /api/v1/transfers/80 actually does. The listing is effectively a stub with confirmed liveness and pricing.","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":"2026-04-19T14:19:08.388Z","embedding":[-0.023483276,-0.0231781,0.03640747,0.0262146,0.01864624,-0.0357666,-0.020187378,0.044677734,0.07092285,-0.06402588,0.023498535,-0.038513184,-0.026351929,-0.025253296,-0.027069092,-0.0005245209,-0.0022125244,0.0057411194,-0.035339355,0.044006348,0.024612427,-0.013343811,-0.031463623,0.028579712,-0.0015201569,-0.024810791,-0.006931305,-0.0096206665,-0.01789856,-0.027404785,0.042877197,-0.035308838,0.0035171509,0.01663208,-0.011428833,-0.0072250366,0.010757446,0.042755127,0.030471802,-0.011711121,0.004447937,-0.05328369,-0.00064992905,-0.022521973,-0.06317139,0.0029354095,-0.004676819,-0.02571106,0.0009813309,0.0006008148,-0.040802002,-0.004676819,-0.024551392,0.0012464523,0.0032310486,0.016937256,-0.009010315,-0.0056762695,0.0018749237,0.008880615,-0.013435364,-0.054870605,-0.014678955,-0.014213562,0.010597229,0.04840088,-0.018554688,0.043548584,0.01234436,0.066101074,0.034088135,0.03970337,0.03250122,0.0101623535,-0.0049476624,0.015777588,-0.019104004,0.054870605,-0.0095825195,-0.021255493,-0.00970459,-0.006149292,-0.055847168,0.004261017,-0.007587433,-0.03616333,-0.020904541,0.010429382,-0.010322571,0.030715942,-0.06378174,-0.0061187744,-0.011528015,-0.0037498474,0.017074585,-0.008155823,0.0036354065,0.030029297,-0.0070266724,0.016937256,-0.012367249,-0.041503906,0.009979248,0.009048462,0.039001465,0.034118652,0.006565094,0.015075684,0.018630981,-0.013641357,-0.0335083,-0.0010786057,-0.0140686035,-0.006526947,0.006538391,-0.0023651123,-0.019119263,0.008995056,-0.026809692,0.019165039,-0.04827881,0.04168701,0.016525269,-0.00057172775,-0.003709793,-0.041656494,-0.006259918,0.023986816,-0.027389526,-0.011894226,0.03503418,0.005001068,0.031982422,-0.008422852,-0.0501709,0.008422852,-0.03024292,-0.006263733,-0.04751587,-0.039855957,0.033569336,-0.035583496,0.013908386,0.02255249,-0.09887695,-0.012710571,-0.026031494,0.022827148,-0.02949524,0.008804321,-0.0034332275,0.019546509,-0.022018433,-0.0154418945,-0.014091492,-0.013664246,0.0046081543,0.044067383,-0.014427185,0.04449463,-0.019241333,0.0317688,0.0045394897,-0.00061130524,0.00642395,0.02658081,0.0027751923,-0.08984375,-0.08892822,-0.011489868,0.0093688965,-0.025878906,-0.03555298,0.014091492,-0.015075684,-0.07159424,-0.0069389343,-0.03265381,-0.003047943,-0.03793335,0.014854431,-0.023071289,0.025360107,-0.012107849,-0.06512451,-0.029083252,-0.018569946,0.059509277,0.024337769,0.03274536,0.01285553,-0.0064201355,0.0592041,0.027572632,-0.028396606,-0.02406311,0.010437012,-0.012863159,0.013801575,-0.009475708,0.02268982,-0.027648926,0.039367676,0.0552063,-0.0024166107,-0.037078857,-0.0017595291,-0.042755127,-0.045898438,-0.027404785,0.015792847,0.01675415,-0.01083374,0.04208374,-0.039123535,-0.035217285,0.0013284683,0.026809692,0.018630981,0.0725708,0.0107421875,-0.016708374,0.021209717,0.015548706,-0.049194336,0.048583984,0.038757324,0.011482239,-0.034118652,-0.033691406,0.036956787,0.044281006,-0.036346436,-0.0022277832,-0.007358551,0.020690918,-0.006587982,-0.0027217865,0.010383606,-0.005592346,-0.027114868,-0.021591187,-0.025299072,0.02935791,0.0021152496,-0.031829834,-0.029724121,-0.093444824,0.05142212,0.031921387,0.04260254,-0.0023975372,-0.0011148453,-0.018661499,-0.011764526,-0.07019043,0.055023193,0.06561279,-0.003168106,-0.013893127,0.034362793,-0.014770508,-0.035064697,0.0141067505,-0.0019445419,-0.030288696,-0.0178833,0.017440796,-0.054229736,0.021484375,0.026412964,0.025924683,0.051239014,-0.0049705505,-0.051513672,-0.031066895,-0.0031433105,-0.0039634705,-0.026260376,-0.006893158,-0.010597229,0.020614624,0.010215759,0.0015916824,0.019363403,-0.012435913,0.003408432,0.0077323914,0.007411957,-0.020858765,-0.03164673,0.019897461,0.013168335,-0.055999756,0.0077400208,-0.007499695,0.072387695,-0.04473877,0.039489746,-0.018035889,0.022003174,0.04888916,-0.0032958984,-0.039031982,0.012794495,0.024932861,0.009315491,0.04522705,0.0070114136,-0.029571533,-0.014503479,0.074035645,-0.013366699,-0.0014562607,0.010566711,0.030456543,0.032104492,-0.008712769,-0.05923462,-0.036895752,-0.018066406,-0.050567627,0.02619934,-0.009254456,0.02520752,-0.015625,-0.00043654442,-0.03515625,0.011917114,-0.02319336,0.019515991,-0.027648926,0.013877869,-0.01222229,-0.017364502,0.017150879,0.0049209595,-0.013748169,-0.0037956238,0.041931152,0.028961182,-0.008743286,-0.03439331,-0.019729614,-0.010284424,0.003189087,0.022964478,0.018997192,0.03050232,0.049346924,-0.04031372,0.004486084,0.020843506,0.020126343,0.029464722,-0.014091492,-0.010498047,-0.06866455,-0.058166504,-0.02494812,-0.040039062,0.031433105,0.012580872,-0.0064849854,0.037963867,0.010002136,-0.022018433,-0.030792236,0.01902771,-0.059783936,0.00051641464,0.056640625,-0.016815186,-0.02357483,0.001490593,-0.0096206665,0.009757996,0.02607727,0.01171875,0.030426025,0.07476807,0.038269043,-0.0064735413,0.03189087,-0.014961243,0.02029419,0.008262634,-0.023071289,-0.028213501,-0.0063209534,0.029571533,-0.016204834,-0.019073486,-0.05871582,0.04699707,0.04348755,0.07550049,0.023925781,0.0077056885,0.028213501,-0.0052490234,0.009124756,-0.036224365,-0.008918762,-0.02230835,-0.04937744,0.030044556,-0.008003235,-0.0093307495,-0.026901245,0.053375244,0.0013971329,0.027893066,-0.037872314,0.04034424,-0.010826111,-0.021362305,0.021408081,0.00894928,0.053131104,0.06121826,-0.048339844,0.011116028,0.018478394,-0.031555176,-0.007850647,0.035583496,-0.011817932,-0.023101807,-0.064208984,-0.03479004,-0.009490967,-0.008758545,-0.029281616,0.02192688,0.01838684,0.018737793,0.028900146,-0.004299164,-0.014373779,-0.01083374,-0.020904541,-0.06951904,0.0035953522,-0.038970947,-0.0016374588,0.047912598,-0.023239136,-0.004180908,0.0064048767,-0.0043182373,-0.011741638,-0.0014333725,0.01927185,-0.0030021667,-0.048675537,0.029144287,0.003709793,0.013999939,0.016952515,0.016799927,0.016098022,0.015304565,0.036224365,0.022354126,-0.026168823,-0.068603516,0.0028762817,-0.033599854,0.0010108948,0.009635925,-0.03265381,-0.003768921,-0.009613037,-0.03326416,-0.025283813,0.015037537,-0.03274536,0.0045280457,0.021530151,-0.020858765,-0.031555176,-0.05770874,-0.023468018,0.0051879883,0.08343506,0.022476196,0.008956909,-0.08001709,-0.009902954,0.025344849,0.011375427,0.03250122,-0.015357971,-0.00831604,-0.016860962,-0.026504517,-0.005207062,-0.026245117,0.025650024,-0.008453369,0.00040388107,0.014381409,0.0027008057,0.020843506,0.0031166077,0.020523071,0.035827637,-0.040863037,-0.009529114,-0.0070991516,0.020523071,0.013175964,-0.010795593,-0.04623413,0.04611206,0.021896362,0.052246094,-0.04623413,-0.0042648315,-0.016693115,0.01586914,0.01512146,-0.004776001,-0.0034427643,0.0017852783,-0.044128418,-0.05908203,0.041870117,-0.029937744,0.023513794,0.014251709,0.004798889,0.02407837,-0.011299133,-0.011764526,0.012039185,-0.028457642,-0.007926941,-0.016738892,-0.031951904,-0.020309448,-0.0045776367,-0.02168274,0.026748657,-0.031036377,0.018920898,-0.005252838,-0.023529053,0.01914978,0.00021910667,-0.004333496,0.017425537,0.012290955,0.024475098,0.035614014,0.010658264,-0.03717041,0.017974854,-0.005630493,0.010795593,-0.004611969,0.036132812,0.028869629,-0.0052871704,0.0049209595,-0.013839722,-0.019165039,-0.016235352,-0.0069999695,0.0124435425,0.013061523,-0.0002603531,-0.0385437,0.022598267,0.010444641,-0.024749756,-0.032562256,0.01638794,0.009895325,-0.03173828,0.017578125,0.01725769,0.049713135,-0.024551392,0.002128601,0.0015420914,0.03152466,0.028793335,0.01977539,-0.016571045,0.01966858,-0.01525116,0.013786316,-0.017440796,-0.016464233,0.026535034,-0.0032749176,0.02267456,0.025131226,0.0066375732,-0.027999878,-0.045074463,-0.001748085,-0.0077781677,-0.024856567,0.011619568,0.009887695,0.021102905,-0.02659607,0.026260376,0.013282776,-0.030532837,-0.020629883,-0.006374359,0.04788208,-0.026855469,-0.007358551,0.0067825317,0.014823914,0.025222778,-0.05218506,-0.0064468384,0.002313614,0.015701294,-0.012809753,-0.039367676,-0.035186768,0.0057678223,0.023208618,0.010406494,0.026535034,0.04257202,-0.00063610077,0.0048942566,0.022781372,-0.0021533966,-0.022323608,-0.02520752,-0.04208374,-0.017929077,0.0030288696,0.0020923615,-0.022506714,0.010345459,-0.0052452087,-0.034210205,0.015106201,-0.010528564,-0.0032920837,-0.016677856,0.005329132,0.039764404,0.0024929047,0.024459839,-0.009803772,-0.04888916,0.0012054443,0.0045776367,0.02218628,-0.047302246,0.014328003,-0.02041626,0.010978699,-0.0019083023,0.014694214,0.02368164,0.019729614,0.016098022,0.028366089,-0.048034668,0.050994873,-0.036224365,0.0071640015,0.01222229,-0.040863037,-0.012176514,-0.022369385,-0.015449524,0.039978027,-0.034729004,-0.0074653625,-0.026535034,-0.033966064,-0.014282227,-0.053497314,0.019607544,0.041137695,0.038391113,-0.024734497,-0.004234314,0.0056762695,0.0057792664,-0.015670776,0.00022935867,-0.018310547,0.011154175,0.028503418,0.0004749298,-0.029678345,-0.028793335,-0.02104187,-0.016647339,-0.04296875,-0.056152344,-0.012268066,0.010154724,-0.016937256,-0.015609741,-0.029937744,-0.031555176,0.009727478,-0.037475586,0.0054740906,0.010658264,0.027404785,0.009147644,-0.026611328,0.006427765,0.012809753,-0.020599365,0.041625977,0.0041503906,-0.00073480606,-0.038879395,0.0041122437,0.010505676,0.027008057,-0.010681152,-0.014556885,-0.0025405884,-0.009208679,-0.0647583,-0.0077667236,-0.0047073364,-0.0037937164,-0.007457733,-0.0076141357,-0.047454834,-0.0077056885,-0.016738892,0.0021762848,0.024139404,0.010574341,0.016021729,-0.011886597,0.017730713,0.003124237,-0.015304565,-0.024795532,0.0077209473,0.011169434,0.0007176399,0.028289795,0.052703857,0.008522034,-0.01876831,0.0004143715,0.0022449493,0.01701355,-0.03643799,0.007598877,-0.013397217,0.015411377,-0.013893127,-0.00774765,-0.028869629,-0.002632141,0.08319092,-0.0012798309,-0.000688076,-0.0052948,-0.014228821,0.012741089,0.029006958,-0.041809082,-0.0040016174,-0.028686523,0.027572632,-0.020889282,0.015129089,0.008766174,0.014823914,-0.019638062,-0.05871582,-0.012702942,-0.019378662,-0.0010871887,-0.059417725,-0.016067505,-0.072753906,-0.0012044907,-0.006286621,-0.026000977,0.0022640228,0.012031555,-0.021896362,-0.08001709,0.0042037964,0.057434082,0.0057296753,0.020263672,-0.017578125,0.013572693,0.03564453,-0.03164673,0.0012903214,0.015396118,-0.025985718,-0.030456543,-0.028686523,0.029754639,-0.0088272095,-0.015426636,0.011291504,0.013198853,0.0259552,-0.010978699,0.011390686,-0.00033187866,0.027709961,-0.021636963,0.014251709,-0.006866455,-0.023895264,0.035064697,-0.049102783,0.029388428,0.019485474,-0.0053710938,0.005924225,0.028762817,0.034301758,-0.0309906,-0.022003174,0.016662598,0.012069702,0.029190063,-0.028564453,0.05722046,0.013717651,-0.019958496,0.0209198,-0.0037555695,-0.013755798,-0.02470398,-0.02078247,0.031341553,0.002456665,0.0065574646,-0.0121154785,-0.0020484924,0.0143585205,0.007259369,0.0099487305,-0.012313843,-0.0076675415,-0.02104187,-0.009735107,0.010169983,-0.0026187897,-0.001964569,0.027435303,0.028289795,0.03982544,0.0068473816,-0.02217102,0.011154175,0.03479004,-0.013587952,-0.0028839111,0.018981934,0.015808105,0.021743774,0.014144897,0.010826111,-0.05053711,-0.011009216,-0.018310547,-0.012039185,-0.0020713806,-0.0027942657,-0.008911133,-0.018615723,0.004295349,-0.0028266907,-0.023376465,0.0020179749,-0.031555176,-0.015556335,-0.008583069,-0.013023376,0.016067505,-0.00074338913,0.013252258,0.0031147003,-0.005203247,0.04525757,-0.0017232895,-0.0051612854,0.022644043,0.029785156,0.02999878,-0.03439331,-0.0025424957,-0.016143799,-0.014823914,0.0018548965,-0.040283203,0.012008667,0.043884277,-0.02671814,-0.0090408325,0.009552002,0.031173706,-0.0093307495,-0.008155823,-0.0031547546,0.026779175,-0.013969421,0.03552246,-0.04324341,0.0231781,0.010971069,0.00007021427,-0.0015087128,-0.021209717,-0.027130127,0.0132751465,0.00818634,-0.0143585205,0.048431396,0.0063552856,0.022033691,-0.019943237,-0.021850586,0.016723633,-0.027786255,-0.014343262,0.024429321,-0.013916016,0.00008916855,0.01121521,-0.022369385,0.036834717,-0.031311035,0.011932373,0.009109497,0.009880066,-0.024520874,-0.008346558,-0.011268616,-0.01134491,-0.01876831,-0.0024108887,-0.008811951,0.05041504,0.016235352,0.026870728,0.050720215,0.011428833,-0.005897522,-0.033477783,-0.020401001,0.005332947,-0.016189575,0.010726929,-0.017990112,0.049102783,0.041900635,-0.0031757355,0.03866577,0.027679443,0.028427124,0.006187439,0.009117126,-0.015037537,0.020843506,-0.0037498474,0.03201294,0.0015220642,0.032409668,-0.027618408,0.022262573,0.015388489,0.022476196,-0.02267456,0.032287598,0.0736084,0.019592285,-0.013824463,0.034301758,-0.007926941,-0.016311646,-0.0062179565,-0.030212402,0.06317139,0.013572693,0.052459717,0.04711914,-0.0018949509,-0.0018701553,0.025009155,-0.031066895,-0.019805908,0.07495117,0.022994995,-0.017318726,-0.0033721924,-0.00019013882,0.01373291,-0.050628662,-0.035095215,0.02166748,-0.0093688965,0.009262085,-0.0015525818,-0.01802063,-0.012062073,0.019805908,0.009933472,0.01940918,-0.010269165,0.033081055,0.035858154,0.003622055,0.0284729,-0.0065841675,0.021621704,-0.017608643,-0.032989502,0.020736694,0.025024414,0.0038528442,-0.009498596,0.034088135,0.015655518,0.041625977,0.046142578,-0.0231781,0.004798889,0.035705566,0.004386902,-0.00774765,0.0552063,0.039123535,0.01789856,0.036224365,0.028717041,0.02720642,-0.04296875,0.021270752,0.008102417,0.0019111633,0.0026016235,-0.011955261,0.0016908646,-0.0234375,0.013465881,0.008666992,-0.010971069,0.03729248,0.031341553,-0.0018835068,-0.008148193,-0.005317688,0.015289307,-0.029891968,0.00289917,0.003332138,-0.013969421,0.035247803,0.00868988,0.025131226,-0.014556885,0.011016846,0.0029239655,-0.013069153,0.00051546097,0.02305603,-0.035614014,0.001414299,-0.0073051453,0.008079529,-0.04888916,0.013206482,0.022323608,-0.010955811,0.028823853,0.0037670135,-0.0071792603,-0.0101623535,0.029434204,0.009941101,-0.009895325,-0.011016846,-0.016067505,0.031402588,0.043304443,0.001206398,0.007926941,-0.029251099,-0.008346558,0.009140015,-0.01423645,-0.000115692616,-0.013061523,-0.024230957,-0.014572144,0.03173828,0.03277588,0.0236969,0.060516357,-0.024353027,-0.0158844,0.0048179626,0.034942627,0.0037937164,0.0017061234,0.0037631989,0.019210815,-0.020553589,0.046966553,0.03793335,0.013038635,0.02230835,-0.014427185,-0.01751709,0.01184082,-0.006111145,0.018844604,-0.0129776,0.009918213,-0.0021305084,0.031555176,-0.012168884,-0.039764404,0.015037537,-0.01637268,-0.025238037,-0.014862061,0.024108887,0.0056610107,0.020721436,0.03829956,0.018585205,-0.023635864,0.061157227,-0.019256592,0.049804688,0.0008006096,-0.01663208,0.044158936,0.016052246,0.026123047,0.025131226,0.026901245,-0.037963867,0.021118164,0.041290283,0.015304565,0.016616821,0.0047569275,-0.01675415,0.04019165,-0.004108429,0.02684021,-0.013328552,-0.0029621124,0.008522034,-0.001964569,-0.019302368,-0.0038337708,-0.010398865,0.006877899,0.051849365,-0.026443481,-0.022125244,-0.022109985,-0.011009216,0.020843506,-0.016403198,0.005962372,-0.009742737,-0.02293396,0.013252258,-0.03286743,-0.029083252,0.005355835,0.023391724,-0.029464722,-0.01789856,0.00070619583,0.029296875,-0.02709961,0.01928711,0.022827148,-0.009788513,0.0025939941,0.04425049,-0.0082092285,0.033843994,-0.0076141357,0.03164673,0.03363037,0.006389618,-0.02243042,-0.0015602112,0.008277893,-0.02041626,0.006072998,0.03152466,-0.014160156,-0.00052785873,-0.0067253113,-0.009689331,0.00035071373,0.0075531006,0.0068588257,0.0113220215,-0.014961243,-0.0020427704,-0.0046577454,0.017303467,0.006111145,-0.0023059845,-0.01133728,-0.015586853,0.0073509216,0.02053833,0.011947632,-0.032836914,-0.0033798218,0.0049209595,0.005748749,-0.016830444,-0.0128479,-0.008842468,-0.033599854,0.010475159,0.0073242188,0.0141067505,0.02079773,-0.02406311,0.00096178055,0.019165039,0.020843506,0.012756348,0.0037403107,-0.0039405823,0.014038086,-0.0027484894,-0.0067443848,-0.005393982,-0.0038070679,0.0107421875,0.026443481,-0.006134033,-0.03677368,0.021865845,-0.0003232956,0.018463135,0.0036125183,-0.012054443,0.01878357,-0.017837524,0.0044136047,0.001209259,0.011795044,-0.008262634,-0.024307251,-0.015975952,0.032836914,0.06222534,-0.005138397,-0.0020160675,0.022232056,0.017654419,0.01689148,0.043518066,-0.004142761,0.04638672,0.0209198,-0.011581421,-0.018005371,0.028320312,-0.0017185211,-0.02607727,0.010856628,0.010101318,0.0019931793,0.028717041,0.007286072,0.0031585693,-0.01864624,-0.020690918,-0.011955261,-0.0065307617,0.01159668,-0.013916016,0.012298584,-0.017669678,-0.013946533,0.019165039,-0.032409668,-0.04824829,-0.018859863,-0.004852295,-0.0069274902,-0.053894043,0.018707275,-0.031463623,-0.00308609,-0.032836914,0.0070343018,-0.008041382,0.026748657,-0.025970459,0.0008134842,0.005443573,0.033294678,0.01737976,0.014556885,0.023483276,-0.027282715,-0.032409668,-0.022644043,0.009552002,-0.01210022,0.00818634,0.01033783,0.02885437,0.020935059,-0.010368347,-0.007007599,-0.012374878,-0.004142761,-0.017150879,-0.014587402,-0.023376465,0.023834229,0.019012451,-0.024261475,-0.006729126,0.04824829,-0.021606445,-0.010398865,0.023361206,0.044036865,0.010124207,0.036224365,-0.02192688,-0.00349617,-0.025375366,-0.012008667,-0.019577026,0.01499939,0.009109497,0.0036697388,-0.0066566467,-0.003616333,0.015716553,-0.014808655,-0.0064468384,0.034484863,0.00016415119,-0.0064735413,0.028640747,0.019485474,0.0029563904,-0.024734497,-0.008979797,0.027435303,0.041229248,0.012268066,0.009216309,-0.0053520203,0.0025978088,-0.010902405,0.0010318756,0.010131836,-0.029571533,-0.044677734,-0.025802612,-0.028503418,0.023086548,-0.01158905,0.009635925,-0.012275696,0.021316528,-0.011138916,-0.022964478,-0.023345947,0.029708862,0.013259888,-0.014282227,-0.004234314,0.008636475,0.010215759,-0.027618408,0.0021400452,-0.053771973,-0.03213501,-0.009849548,-0.022064209,0.029281616,0.010421753,-0.0048942566,-0.007820129,-0.0066108704,-0.0017795563,0.008285522,0.036224365,-0.014854431,0.0057525635,0.021469116,0.018035889,-0.019317627,0.021377563,-0.013633728,-0.0004491806,0.008415222,-0.0038070679,0.0078125,-0.024429321,0.036712646,-0.00819397,0.000013411045,0.037231445,-0.008506775,0.003227234,-0.025619507,0.012023926,0.0023231506,-0.0014133453,0.030563354,-0.02545166,-0.014343262,0.004436493,-0.009254456,-0.026992798,0.0031852722,0.028930664,0.031677246,-0.004131317,0.04901123,-0.008636475,-0.0023975372,0.012054443,0.005580902,-0.019241333,0.00035214424,0.037200928,0.0027770996,-0.003490448,-0.004486084,-0.017349243,-0.023605347,-0.0034599304,0.005264282,-0.0048675537,-0.013160706,0.032714844,0.016052246,0.041748047,0.0009150505,0.0234375,0.015449524,0.009056091,0.025985718,0.006362915,0.059509277,-0.0008597374,-0.016098022,0.009399414,0.0054740906,-0.014213562,0.00062179565,-0.002275467,0.0042304993,-0.03375244,0.016159058,-0.007331848,0.02519226,-0.013076782,0.013183594,-0.020431519,-0.015289307,-0.036071777,-0.004020691,-0.022567749,0.005722046,0.030670166,-0.0015325546,0.030181885,0.0076408386,-0.024002075,0.024261475,0.05380249,-0.0010967255,-0.031951904,-0.0065841675,0.02116394,0.0025291443,0.0057296753,0.008552551,-0.02130127,-0.017120361,-0.0005660057,-0.012329102,0.002538681,-0.0012254715,0.012275696,0.013191223,-0.003522873,-0.012176514,0.023513794,-0.006702423,-0.0021839142,0.020217896,0.0050735474,0.038116455,0.022720337,-0.0035362244,0.0211792,0.019165039,-0.03930664,0.066467285,-0.0031471252,0.025436401,-0.028213501,0.012809753,-0.03717041,-0.015655518,-0.017059326,0.017959595],"createdAt":"2026-04-18T19:28:03.252Z","updatedAt":"2026-04-22T21:31:47.392Z","lastSeenAt":"2026-04-22T21:31:47.392Z","tsv":"'/api/v1/transfers/80':104,198 '/request':13,30 '0.02':12,29,122,125,156 '000':117 '20':116 '402':209 'Base network API' 'USDC API' 'access':110,223 'across':50 'actual':200 'addit':132 'advertis':131 'ai/ml':53 'also':130 'analysi':137 'analyt':52 'api':5,15,22,32,41,81,109,167,222 'attach':92 'base':8,25,71,118 'base-network' 'beyond':225 'broad':46 'call':4,21,127 'caller':90 'categori':134 'challeng':210 'classif':140 'commit':89 'connect':176 'content':182 'convers':148 'crypto-paid API' 'data':51,56,150,218 'descript':194 'detail':193 'doc':166 'document':161,213 'embed':141 'enabl':40 'endpoint':49,61,102,133,199,203 'exampl':190 'exchang':144 'export':151 'extrem':163 'feed':143 'finance/web3':55 'function':220 'generic':227 'geocod':146 'header':96 'http-post' 'i.e':124 'includ':135 'infer':54 'key':16,33,82 'label':228 'limit':85 'list':106 'live':205 'lowpaymentfee' 'lowpaymentfee.com':35 'maximum':114 'micropayment API' 'network':9,26,72 'no-api-key' 'no-rate-limit' 'offer':44 'openapi':186 'page':171 'pay':2,19,64 'pay-per-cal':1,18 'pay-per-call API' 'pay-per-request':63 'payment':95 'per':3,20,65,126,157 'platform':6,23,42,129 'point':160 'premium':108,221 'price':142,159,168 'prompt':178 'protocol':77 'provid':224 'rate':84,145 'readm':170 'render':173 'request':66,99,158 'request/response':189 'requir':17,34,112 'return':201,206 'schema':187 'sentiment':136 'servic':59 'set':47 'settl':73 'simpli':91 'spars':164 'specif':101 'subscript':88 'summar':139 'text':138 'unclear':216 'unit':119 'usdc':68,121,123 'usdc-settlement' 'use':67 'util':58 'valid':147,208 'via':10,27,74 'wallet':177 'without':212 'x402':11,28,39,76,94 'x402 API' 'x402-enabled':38 'x402-payment'","prices":[{"id":"6e6f9523-fcbc-4041-b1ea-054a032364bd","listingId":"76298960-4233-4ad4-a50c-461a1b6caf07","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/transfers/80","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:03.252Z"}],"sources":[{"listingId":"76298960-4233-4ad4-a50c-461a1b6caf07","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transfers/80","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:03.252Z","lastSeenAt":"2026-04-22T21:31:47.392Z"}],"details":{"listingId":"76298960-4233-4ad4-a50c-461a1b6caf07","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transfers/80 \\\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":"The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/transfers/80"},{"claim":"All endpoints are 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 platform offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/transfers/80"}],"useCases":["Accessing pay-per-request API services without managing API keys or subscriptions","Making micropayment-settled API calls from autonomous agents on Base network","Integrating low-friction paid endpoints into workflows that support x402"],"bestFor":["Developers wanting zero-commitment, pay-as-you-go API access","AI agents that can settle x402 payments autonomously","Projects needing USDC-based micropayment API integration on Base"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","Applications requiring free or subscription-based API access","Use cases needing guaranteed SLAs or support contracts"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:33.336Z"},"updatedAt":"2026-04-22T21:31:47.392Z"}}