{"id":"f5f1ab9b-b2f4-4986-9f9c-dacf12800114","shortId":"VWaVKf","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys, no rate limits.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys, no rate limits.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of pay-per-call endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. Every endpoint costs $0.02 per request, settled in USDC on the Base network. The x402 protocol means there are no API keys, no sign-ups, and no rate limits — callers simply attach an X-PAYMENT header with a valid payment proof to each request.\n\nThe specific endpoint at `/api/v1/accounts/117` is listed as \"Premium API Access\" and returns `application/json`. Its x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nThe broader platform also exposes endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02 price point. Documentation pages exist at /docs, /pricing, and /api but currently render only a \"Connect wallet\" prompt with no substantive content, so the exact request/response schemas for this particular endpoint are unknown.","tags":[],"capabilities":["x402-payment","per-request-billing","usdc-base","no-api-key","json-response","premium-api-access"],"categories":["api-gateway","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","402 payment required API","crypto-paid API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README all render only 'Connect wallet' with no content.","The exact purpose and response schema of /api/v1/accounts/117 ('Premium API Access') is unknown; the name is generic.","No OpenAPI spec or request/response examples are provided by the platform.","Cannot verify what data or functionality this endpoint actually delivers."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/117","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/accounts/117","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 is operational. However, there is no OpenAPI schema, no documentation beyond a wallet-connect prompt, and no information about what data this specific /accounts/117 endpoint actually returns. The listing is effectively a stub with pricing and protocol details only.","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":"2026-04-19T01:15:15.484Z","embedding":[-0.017242432,-0.02758789,0.046569824,0.019897461,0.02293396,-0.034088135,-0.0043182373,0.04559326,0.06750488,-0.0670166,0.04248047,-0.044799805,-0.02671814,-0.025054932,-0.023269653,0.018585205,-0.0067481995,0.0016145706,-0.06213379,0.046691895,0.01499176,-0.011756897,-0.01852417,0.04248047,0.0010004044,-0.027893066,0.00504303,-0.013542175,-0.004837036,-0.039367676,0.03277588,-0.029296875,-0.008117676,0.028579712,-0.0060424805,-0.014411926,-0.0054512024,0.0491333,0.029037476,-0.018112183,-0.0023612976,-0.058013916,0.011474609,0.005584717,-0.058013916,0.001537323,0.008201599,-0.027160645,-0.031951904,0.012557983,-0.031921387,0.002588272,-0.0031719208,-0.0047073364,0.007217407,0.017333984,-0.014289856,-0.012214661,0.014434814,0.00422287,-0.0065307617,-0.050567627,-0.027267456,0.0055618286,0.009727478,0.05432129,0.0048446655,0.03643799,0.016647339,0.06347656,0.03656006,0.060760498,0.053619385,0.0055236816,0.008743286,-0.005252838,0.002231598,0.0602417,-0.0043144226,-0.011756897,-0.008079529,-0.024475098,-0.0552063,-0.000110805035,-0.020263672,-0.053222656,-0.015930176,0.017471313,-0.019058228,0.02961731,-0.064697266,-0.005378723,-0.019577026,0.013725281,0.012557983,0.0070266724,-0.0126953125,0.013473511,-0.016235352,0.009788513,0.009391785,-0.032714844,0.02192688,0.015930176,0.05496216,0.049713135,0.01486969,0.027664185,-0.0050621033,-0.015655518,-0.010597229,0.017562866,-0.015655518,-0.018753052,0.021896362,0.0033054352,-0.024230957,0.026031494,-0.029342651,0.014030457,-0.04763794,0.052978516,0.02810669,-0.012130737,0.017333984,-0.048583984,-0.021606445,0.0017318726,-0.026397705,-0.0041503906,0.010696411,0.007297516,0.039154053,-0.01448822,-0.03387451,0.009613037,-0.010681152,-0.022338867,-0.044921875,-0.021530151,0.03665161,-0.027191162,0.022583008,0.031799316,-0.0949707,-0.021087646,-0.058502197,0.007896423,-0.04095459,-0.0079956055,-0.009933472,0.021575928,-0.028396606,-0.010475159,-0.018920898,-0.02670288,-0.016937256,0.044158936,0.005264282,0.04559326,-0.006996155,0.031036377,0.02229309,0.000020444393,0.029769897,0.03869629,-0.010574341,-0.078125,-0.08288574,-0.03137207,-0.00374794,-0.012435913,-0.036071777,-0.0038471222,0.002090454,-0.091918945,-0.030380249,0.0019550323,-0.00945282,-0.023269653,-0.008033752,-0.026992798,0.008163452,-0.022735596,-0.05355835,-0.015945435,-0.025253296,0.053527832,0.024383545,0.007820129,0.028900146,-0.01889038,0.057495117,0.0262146,-0.023284912,-0.03137207,0.018371582,-0.014213562,0.012306213,0.012931824,0.008110046,-0.030960083,0.03704834,0.05947876,-0.0014095306,-0.019256592,0.0018472672,-0.05303955,-0.046081543,-0.02758789,0.012504578,0.01626587,-0.010101318,0.023788452,-0.03967285,-0.03048706,0.0013170242,0.011054993,0.018936157,0.06384277,-0.0116119385,-0.009407043,0.015014648,0.01008606,-0.05706787,0.042297363,0.044525146,0.027160645,-0.023971558,-0.021102905,0.019470215,0.028244019,-0.026229858,0.009391785,-0.017044067,0.019058228,0.004600525,0.013214111,0.027709961,-0.016601562,-0.037963867,-0.034088135,0.006134033,0.040283203,0.01335144,-0.026855469,-0.044403076,-0.08392334,0.038970947,0.05206299,0.014808655,0.00007236004,0.0070152283,-0.031341553,-0.010063171,-0.07672119,0.072387695,0.0770874,-0.0012435913,-0.01928711,0.028167725,-0.02418518,-0.032043457,-0.0017976761,-0.0008816719,-0.017868042,-0.017150879,0.027389526,-0.04034424,-0.002538681,0.010818481,0.023849487,0.043640137,-0.01828003,-0.048339844,-0.028182983,0.011154175,0.009651184,-0.02835083,-0.00024080276,0.003124237,0.021850586,0.040924072,-0.0022621155,0.025543213,-0.013549805,0.014923096,-0.009048462,-0.005001068,-0.031036377,-0.020721436,0.012969971,-0.00065374374,-0.06866455,0.0107040405,-0.002216339,0.05014038,-0.04348755,0.035339355,-0.006164551,0.008964539,0.061828613,0.00088071823,-0.039733887,0.006401062,0.033935547,0.034210205,0.03857422,0.019500732,-0.012748718,0.00274086,0.06994629,-0.02027893,0.0016822815,0.00957489,0.0154953,0.028640747,-0.001704216,-0.060455322,-0.0390625,-0.010002136,-0.026855469,0.016738892,-0.039093018,0.03164673,-0.0077400208,0.0129470825,-0.025344849,0.0047340393,-0.041900635,0.014770508,-0.0014801025,0.006210327,-0.007484436,-0.02003479,0.0064811707,0.02230835,-0.029632568,-0.008003235,0.04208374,0.019714355,-0.015007019,-0.031799316,-0.031311035,-0.020996094,0.0053215027,0.028457642,0.035369873,0.013366699,0.036224365,-0.03994751,0.011276245,0.027664185,0.00035738945,0.051605225,-0.010261536,0.018325806,-0.050476074,-0.051452637,-0.010795593,-0.050079346,0.027923584,0.024902344,0.006629944,0.053894043,0.0032539368,-0.022705078,-0.036956787,0.024871826,-0.04458618,0.008728027,0.0335083,-0.023757935,-0.03918457,0.011299133,0.009963989,0.0065193176,0.037841797,0.017364502,0.0013828278,0.0814209,0.043701172,0.016921997,0.017349243,0.011062622,0.023269653,0.003856659,-0.022613525,-0.022384644,-0.011054993,0.032409668,-0.02067566,-0.017715454,-0.06896973,0.05053711,0.03048706,0.08569336,0.024215698,0.0007367134,0.038848877,-0.023925781,0.01360321,-0.026855469,-0.021453857,-0.027313232,-0.04159546,0.025650024,-0.0035991669,-0.0057868958,-0.033721924,0.03387451,0.0178833,0.013290405,-0.032287598,0.052246094,0.002626419,-0.025115967,0.021820068,0.005886078,0.045166016,0.044921875,-0.04156494,0.0284729,0.015151978,-0.033996582,-0.015899658,0.04449463,-0.00014483929,-0.022506714,-0.058288574,-0.03781128,-0.00932312,-0.011985779,-0.05596924,-0.01007843,-0.005504608,0.02607727,0.029434204,-0.014778137,-0.018508911,-0.00793457,-0.01335144,-0.052520752,-0.019256592,-0.040039062,-0.0014591217,0.03778076,-0.038208008,-0.0019550323,-0.0013980865,0.0022468567,-0.013923645,0.009643555,-0.0029277802,-0.005519867,-0.06323242,0.038391113,0.008674622,0.0071983337,0.010864258,0.02947998,0.03866577,0.007686615,0.048950195,0.0072517395,-0.010787964,-0.05657959,0.020721436,-0.039978027,0.00970459,0.0037975311,-0.008483887,-0.016021729,-0.016830444,-0.03149414,-0.023330688,0.00843811,-0.030517578,0.0124053955,0.028396606,-0.035339355,-0.018218994,-0.048675537,-0.022155762,-0.006828308,0.068725586,0.03161621,-0.012863159,-0.056365967,-0.022766113,0.013031006,0.0060310364,0.0102005005,-0.014915466,0.001871109,-0.0010461807,-0.027053833,-0.027526855,-0.013092041,0.020248413,-0.0063591003,-0.008544922,0.024719238,-0.00289917,0.012962341,-0.008964539,0.0118255615,0.01713562,-0.014160156,0.01058197,-0.015068054,0.01096344,-0.00045657158,0.007621765,-0.04650879,0.048034668,0.0035762787,0.034851074,-0.03967285,0.0064888,0.00869751,0.014915466,0.025726318,-0.008918762,-0.012229919,0.0053863525,-0.038726807,-0.08380127,0.047180176,-0.030776978,0.028564453,0.0017671585,0.004890442,0.03338623,-0.006225586,0.0068473816,0.024993896,-0.02519226,-0.0041236877,-0.026275635,-0.03564453,-0.012359619,-0.006526947,-0.01977539,0.017791748,-0.01524353,0.00504303,-0.018234253,-0.02331543,0.025146484,0.00086927414,-0.011024475,0.03024292,0.0045776367,0.01890564,0.05392456,0.008621216,-0.020202637,0.014434814,-0.0065612793,-0.0013275146,-0.010383606,0.043792725,0.021331787,-0.016082764,-0.009933472,-0.004070282,-0.0057754517,-0.032836914,-0.0009384155,0.0027885437,0.02947998,0.0121536255,-0.0335083,0.01600647,0.013801575,-0.033477783,-0.0059928894,0.015335083,0.013122559,-0.03387451,0.035583496,0.027313232,0.05596924,-0.030349731,0.0066947937,0.0026226044,0.028747559,0.019195557,0.018417358,-0.018585205,0.0121154785,-0.011306763,0.01802063,0.0048217773,-0.01675415,0.011550903,-0.009010315,0.009994507,0.028182983,0.028686523,-0.02406311,-0.025497437,0.0043258667,-0.0069084167,-0.026397705,0.021026611,0.020126343,0.016494751,-0.027770996,0.019897461,0.014923096,-0.033691406,-0.013206482,-0.025970459,0.049835205,-0.002374649,-0.012413025,0.014411926,0.011161804,0.02659607,-0.060699463,-0.00034594536,0.011352539,0.008743286,-0.015625,-0.045806885,-0.03060913,-0.007423401,0.027893066,-0.00026726723,0.0104599,0.026519775,-0.00667572,-0.004776001,0.010749817,-0.00076293945,-0.005542755,-0.013328552,-0.052124023,-0.0065231323,-0.008590698,-0.0010318756,-0.030883789,0.021530151,-0.01625061,-0.031555176,0.005908966,-0.009048462,-0.0077056885,-0.011039734,0.0072402954,0.033325195,0.00049591064,0.008338928,-0.021972656,-0.019454956,-0.00021898746,0.0024604797,0.009643555,-0.046905518,0.021255493,-0.017578125,-0.00856781,-0.0049438477,0.016464233,0.0131073,0.023086548,0.011276245,0.03515625,-0.053222656,0.03604126,-0.030639648,0.012161255,-0.004886627,-0.032592773,-0.011177063,-0.025299072,-0.013839722,0.039001465,-0.024246216,0.00048089027,-0.03137207,-0.021118164,-0.008766174,-0.05215454,0.012756348,0.022506714,0.03466797,-0.031921387,-0.0053100586,0.012054443,0.011543274,-0.020584106,0.0069732666,-0.011909485,0.009628296,0.024368286,-0.0028057098,-0.020401001,-0.028579712,-0.01600647,-0.007987976,-0.054626465,-0.045928955,-0.018234253,0.0068092346,-0.0023517609,0.000048577785,-0.016937256,-0.027954102,-0.0017652512,-0.03149414,0.007835388,-0.00015211105,0.02116394,0.017333984,-0.023452759,0.0074691772,0.030426025,-0.025054932,0.037628174,0.012573242,-0.00065374374,-0.041748047,-0.005039215,0.030853271,0.020431519,-0.0060195923,-0.016586304,-0.003921509,-0.017105103,-0.05895996,0.00048589706,-0.015556335,0.009521484,-0.0030574799,-0.00018906593,-0.04815674,-0.010360718,-0.02645874,-0.006755829,0.011375427,0.017410278,0.008857727,0.006198883,0.01626587,-0.015411377,-0.0060272217,-0.030883789,0.0060310364,0.011039734,-0.0051956177,0.01235199,0.0413208,0.0054512024,-0.024887085,0.0090789795,0.0062026978,0.027923584,-0.020935059,-0.004085541,-0.021881104,0.018310547,-0.008865356,-0.017105103,-0.040130615,0.0023345947,0.070495605,-0.0017700195,-0.010505676,-0.019561768,-0.0087509155,0.0211792,0.036193848,-0.056793213,-0.011741638,-0.03817749,0.0284729,-0.022384644,0.012672424,0.0023994446,0.0146865845,-0.019592285,-0.06329346,-0.013923645,0.019561768,-0.008392334,-0.0446167,-0.011543274,-0.061065674,-0.008964539,-0.017990112,-0.016433716,-0.00187397,0.0072631836,-0.020355225,-0.08496094,0.0015897751,0.056427002,0.0051345825,0.018356323,-0.01335144,0.0077323914,0.03466797,-0.030517578,-0.0067634583,0.01626587,-0.027008057,-0.019195557,-0.02684021,0.026123047,-0.011695862,-0.023864746,0.028762817,0.007457733,0.0262146,-0.006843567,0.010635376,-0.008872986,0.01473999,-0.0048713684,0.013938904,-0.0077209473,-0.0061683655,0.020889282,-0.04055786,0.026504517,0.010971069,0.002325058,0.0103302,0.027313232,0.04071045,-0.049713135,-0.018936157,0.04019165,0.0073127747,0.027130127,-0.032165527,0.052825928,0.013290405,-0.020095825,0.021209717,-0.025634766,-0.035125732,-0.040924072,-0.035888672,0.021377563,0.015930176,0.022598267,-0.010154724,0.005432129,0.030273438,-0.0010585785,-0.0009384155,-0.013130188,-0.02494812,-0.018951416,0.009925842,0.00333786,0.0049743652,0.005367279,0.024749756,0.022521973,0.038085938,0.012397766,-0.0038032532,-0.0006427765,0.016052246,-0.02609253,-0.0025920868,0.01889038,0.01348114,0.013885498,0.02041626,0.013893127,-0.048919678,-0.02835083,-0.017822266,-0.020706177,-0.00015342236,-0.003753662,-0.010269165,-0.011383057,0.009315491,-0.012428284,-0.03591919,0.013305664,-0.041503906,-0.023071289,0.009429932,-0.003993988,0.014465332,0.007369995,-0.00022006035,0.009353638,0.004589081,0.060821533,0.0032367706,-0.0074310303,0.028274536,0.040161133,0.013908386,-0.031219482,-0.007858276,-0.0079422,-0.020935059,0.0059318542,-0.02784729,0.018173218,0.04168701,-0.021118164,0.011550903,-0.0075149536,0.023529053,-0.0024318695,0.011299133,-0.0016937256,0.014328003,-0.011817932,0.03604126,-0.04537964,-0.0009384155,0.011985779,-0.0070343018,-0.016555786,-0.016464233,-0.033325195,0.014923096,0.0061416626,-0.018478394,0.042144775,0.011955261,0.026367188,-0.020828247,-0.023956299,0.008956909,-0.031555176,-0.024475098,0.03274536,-0.02116394,-0.010147095,0.018920898,-0.018051147,0.044952393,-0.03363037,0.006641388,0.019515991,-0.006389618,-0.0051231384,-0.02128601,-0.010665894,0.0014247894,-0.0104522705,0.002784729,-0.004211426,0.045074463,0.032348633,0.028900146,0.039031982,0.026901245,0.009300232,-0.04647827,-0.026382446,0.001996994,-0.032043457,0.009986877,-0.017303467,0.054626465,0.03161621,0.00034070015,0.030273438,0.041778564,0.034210205,-0.0022144318,0.014663696,-0.01876831,0.019546509,-0.01399231,0.034210205,0.0000667572,0.048461914,-0.041107178,0.011940002,0.008277893,0.013725281,-0.021377563,0.037963867,0.062683105,0.027954102,-0.008140564,0.037719727,0.0007100105,-0.010139465,-0.009597778,-0.013542175,0.05239868,0.011054993,0.04135132,0.044921875,0.011154175,-0.014343262,0.033325195,-0.02357483,-0.041046143,0.053710938,0.029037476,-0.021865845,-0.012489319,0.002023697,0.01121521,-0.06585693,-0.022567749,0.02017212,-0.0029010773,-0.0012483597,-0.006336212,-0.015151978,-0.008377075,0.0131073,0.022766113,0.014755249,-0.0060310364,0.014305115,0.014770508,0.00198555,0.026794434,0.012001038,0.027770996,-0.029327393,-0.02154541,0.012428284,0.022460938,-0.0020446777,-0.0036449432,0.026168823,0.007534027,0.049713135,0.02798462,-0.025360107,0.002916336,0.022232056,0.022384644,0.01574707,0.056793213,0.034332275,0.017868042,0.043518066,0.040527344,0.024261475,-0.03765869,0.013656616,-0.0022258759,0.010253906,-0.0056991577,-0.014755249,0.008995056,-0.0033035278,0.029830933,0.0025577545,-0.0029697418,0.027313232,0.01777649,-0.0035591125,-0.0043296814,-0.0023059845,0.009529114,-0.012374878,0.0009717941,0.017105103,-0.02407837,0.03338623,0.009742737,0.025497437,-0.0234375,0.019058228,0.008018494,-0.029541016,-0.0074043274,0.020553589,-0.04425049,0.0024356842,-0.012367249,-0.009086609,-0.043029785,0.009422302,0.033111572,-0.013870239,0.03277588,0.011764526,0.004585266,-0.007675171,0.022750854,0.0075798035,-0.011398315,-0.010375977,-0.022506714,0.02407837,0.040924072,-0.0033454895,0.0067481995,-0.02368164,-0.00022947788,0.017837524,-0.015350342,0.011077881,-0.00894928,-0.014137268,-0.027709961,0.011054993,0.047729492,0.011703491,0.036621094,-0.01259613,-0.017547607,0.0067977905,0.03692627,0.008605957,-0.0024642944,-0.012863159,0.034332275,-0.016220093,0.04373169,0.04373169,-0.00088500977,0.033569336,-0.011581421,-0.005672455,0.009437561,-0.021697998,0.022415161,-0.017654419,0.004512787,-0.015640259,0.026306152,-0.0041885376,-0.031921387,-0.00017607212,-0.016357422,-0.01977539,-0.022994995,0.015205383,0.0035438538,0.022155762,0.040802002,0.019821167,-0.027267456,0.06390381,-0.007785797,0.041259766,-0.0063591003,-0.007045746,0.058807373,0.035308838,0.039154053,0.027313232,0.018249512,-0.026412964,0.013320923,0.029403687,0.025283813,0.005584717,0.009246826,-0.017089844,0.03186035,-0.011802673,0.02708435,-0.0050811768,-0.006580353,0.0031032562,-0.007801056,-0.0105896,0.002073288,-0.0043754578,0.0154800415,0.05178833,-0.023284912,-0.005138397,-0.019561768,-0.012893677,0.032318115,-0.004196167,-0.0045394897,-0.0056533813,-0.018737793,-0.00007516146,-0.02709961,-0.018234253,0.010276794,0.031280518,-0.030822754,-0.018585205,0.00029301643,0.02671814,-0.041046143,0.029663086,0.024902344,-0.0066719055,0.008514404,0.045288086,-0.009841919,0.032104492,-0.012268066,0.033599854,0.03692627,0.011352539,-0.011833191,0.0006518364,0.01524353,-0.0098724365,0.010444641,0.029541016,-0.010231018,-0.0027656555,0.0059394836,-0.008956909,0.005054474,0.016281128,-0.016830444,0.0025043488,-0.004749298,-0.009544373,0.0030326843,0.014289856,0.006717682,0.008766174,-0.009353638,-0.0047302246,0.011154175,0.030670166,0.021133423,-0.03375244,-0.0017881393,0.013542175,0.027023315,-0.017059326,-0.017929077,-0.0028076172,-0.040618896,0.019104004,0.023742676,-0.0008955002,0.0039863586,-0.027374268,-0.000026643276,0.032318115,0.00045084953,0.010864258,0.010040283,-0.0022220612,0.013999939,-0.011604309,-0.006008148,-0.0044898987,-0.0028095245,0.015151978,0.019042969,-0.017745972,-0.029037476,0.019805908,0.008766174,0.0067710876,-0.00019037724,-0.01687622,0.029830933,-0.013839722,-0.0064964294,0.009239197,0.00920105,-0.01600647,-0.010604858,-0.027709961,0.034484863,0.054748535,-0.012260437,-0.012016296,0.007865906,0.017471313,0.03152466,0.039978027,0.011199951,0.03805542,0.02104187,-0.023147583,-0.022506714,0.01625061,-0.007396698,-0.030822754,0.020263672,-0.0042915344,-0.008743286,0.014755249,0.009605408,-0.0058555603,-0.022247314,-0.010650635,-0.012420654,-0.008377075,0.015823364,-0.022506714,0.01235199,-0.02961731,-0.0015945435,0.018615723,-0.019515991,-0.04260254,-0.021255493,0.009391785,-0.010978699,-0.056915283,0.004020691,-0.023590088,0.005168915,-0.0060920715,0.0034179688,-0.001291275,0.029724121,-0.0016384125,0.0018148422,0.008422852,0.02470398,0.004085541,0.0040893555,0.031463623,-0.024459839,-0.027267456,-0.014183044,0.0065689087,-0.02279663,0.011528015,-0.0069465637,0.038970947,0.0072517395,-0.0047569275,0.0018405914,-0.020111084,-0.004005432,-0.0093307495,-0.028762817,-0.024368286,0.015930176,0.025634766,0.002872467,-0.0048713684,0.03945923,-0.023605347,-0.01864624,0.013061523,0.042022705,0.004676819,0.041229248,-0.02230835,-0.008666992,-0.020721436,0.0009975433,-0.011581421,0.0038261414,0.016647339,-0.0005812645,0.0026130676,0.008010864,0.02670288,-0.01550293,-0.0057144165,0.024597168,0.00021612644,-0.01991272,0.04385376,0.013259888,-0.0073242188,-0.014381409,-0.016067505,0.011619568,0.0368042,0.009147644,0.010467529,-0.006855011,0.0042304993,-0.009719849,0.015556335,0.026901245,-0.028427124,-0.039367676,-0.022094727,-0.04031372,0.019866943,0.0027885437,0.014831543,-0.002319336,0.014144897,-0.024734497,-0.019897461,-0.023483276,0.027023315,0.005596161,-0.0067749023,-0.0026607513,0.0049705505,0.015159607,-0.03378296,-0.0024280548,-0.03604126,-0.027526855,-0.01737976,-0.024963379,0.01663208,0.008811951,-0.0009918213,0.008399963,0.0041885376,0.0016927719,0.014671326,0.024383545,-0.015655518,-0.00017130375,0.024642944,0.009979248,-0.02709961,0.011199951,-0.002210617,-0.009757996,0.018356323,-0.006713867,0.01158905,-0.018539429,0.021224976,-0.005092621,-0.000957489,0.029907227,0.0009551048,0.0018014908,-0.022079468,-0.0017251968,0.0021095276,-0.005924225,0.03289795,-0.013427734,-0.03262329,0.0049934387,-0.022537231,-0.033935547,0.01134491,0.021560669,0.036865234,-0.014671326,0.042877197,-0.012756348,-0.0056762695,0.01802063,0.0060310364,-0.016052246,-0.00027179718,0.040985107,-0.0007414818,0.0039253235,0.00015759468,-0.0005168915,-0.037139893,-0.0025234222,0.014427185,-0.010185242,-0.023742676,0.019851685,0.018508911,0.03894043,-0.004211426,0.018112183,0.024856567,0.0007581711,0.022079468,0.0079422,0.040924072,-0.0011444092,-0.027053833,0.011291504,0.005168915,-0.023208618,-0.00008606911,-0.004055023,0.008636475,-0.04647827,0.0064811707,0.0006504059,0.034851074,-0.023010254,0.0069999695,-0.02180481,-0.010437012,-0.041503906,-0.003019333,-0.03753662,0.01486969,0.035125732,0.016738892,0.017044067,0.004096985,-0.03881836,0.025894165,0.04776001,0.0004644394,-0.032043457,-0.018920898,0.011207581,0.008972168,-0.0041122437,0.016525269,-0.019607544,-0.01675415,-0.001162529,-0.011795044,0.004627228,-0.0012197495,0.0256958,0.014923096,-0.012634277,-0.0030612946,0.027633667,0.0018472672,-0.001912117,0.0041046143,0.0051231384,0.03994751,0.03933716,-0.012130737,0.022201538,0.02368164,-0.043823242,0.05230713,-0.015571594,0.024551392,-0.024963379,0.016830444,-0.03265381,-0.01663208,-0.0046081543,0.0034179688],"createdAt":"2026-04-18T18:40:49.785Z","updatedAt":"2026-04-24T09:03:19.602Z","lastSeenAt":"2026-04-24T09:03:19.602Z","tsv":"'/api':205 '/api/v1/accounts/117':118 '/docs':202 '/pricing':203 '0.02':10,29,71,147,195 '000':136 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':159 '0x8335':141 '20':135 '2913':142 '300':162 '402 payment required API' '6':151 'Base network API' 'USDC micropayment API' 'access':6,25,124 'address':158 'advertis':131 'ai/ml':61 'also':168 'analysi':173 'analyt':60 'api':5,24,45,88,123 'application/json':127 'attach':100 'base':8,27,79,137,144 'broad':50 'broader':166 'call':56 'caller':98 'catalog':51 'challeng':130 'classif':176 'connect':211 'content':217 'convers':188 'cost':70 'crypto-paid API' 'current':207 'data':59,64 'decim':152 'document':198 'embed':177 'enabl':44 'endpoint':57,69,116,170,226 'equal':146 'estim':185 'everi':68 'exact':220 'exchang':180 'exist':200 'expos':169 'feed':179 'finance/web3':63 'gas':184 'gate':3,22 'generat':190 'geocod':186 'given':148 'header':105 'infer':62 'infrastructur':66 'json-response' 'key':16,35,89 'limit':19,38,97 'list':120 'lowpaymentfee' 'lowpaymentfee.com':39 'maxamountrequir':133 'mean':84 'network':80 'no-api-key' 'offer':48 'page':199 'particular':225 'pay':9,28,54 'pay-per-cal':53 'pay-per-call API' 'payment':104,109,154 'per':11,30,55,72 'per-request-billing' 'platform':46,167 'point':197 'premium':4,23,122 'premium-api-access' 'price':178,196 'prompt':213 'proof':110 'protocol':83 'quot':183 'rate':18,37,96,181 'render':208 'request':12,31,73,113 'request/response':221 'return':126 'schema':222 'second':163 'sent':156 'sentiment':172 'settl':74 'sign':92 'sign-up':91 'simpli':99 'span':58 'specif':115 'substant':216 'summar':175 'text':174 'timeout':164 'token':182 'unit':138 'unknown':228 'up':93 'usdc':14,33,76,140,149 'usdc-base' 'util':67 'valid':108,187 'wallet':212 'x':103 'x-payment':102 'x402':2,21,43,82,129 'x402 API' 'x402-enabled':42 'x402-gated':1,20 'x402-payment'","prices":[{"id":"dac4af99-6c32-499f-8ce9-b6b77d44681e","listingId":"f5f1ab9b-b2f4-4986-9f9c-dacf12800114","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/accounts/117","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:49.785Z"}],"sources":[{"listingId":"f5f1ab9b-b2f4-4986-9f9c-dacf12800114","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/117","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:49.785Z","lastSeenAt":"2026-04-24T09:03:19.602Z"}],"details":{"listingId":"f5f1ab9b-b2f4-4986-9f9c-dacf12800114","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/117 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/117"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/117"},{"claim":"All endpoints cost $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"}],"useCases":["Accessing premium API data without creating accounts or managing API keys","Agent-driven workflows that need frictionless per-call payment on Base","Programmatic access to paid endpoints using x402 protocol and USDC"],"bestFor":["Developers wanting zero-signup, pay-as-you-go API access","AI agents that can settle x402 payments autonomously on Base","Projects needing low-cost ($0.02) per-request billing without subscriptions"],"notFor":["Users who need detailed API documentation or OpenAPI schemas before integrating","Applications requiring non-USDC or non-Base payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:35.025Z"},"updatedAt":"2026-04-24T09:03:19.602Z"}}