{"id":"ff62242c-d313-4a07-8bce-ccb18848d1a9","shortId":"WyHYtV","kind":"x402","title":"Download 2023-11 backup data via x402 micropayment on Base for $0.02 per request.","tagline":"Download 2023-11 backup data via x402 micropayment on Base for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to a downloadable backup file for November 2023 via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of data, AI, finance, and utility APIs — all gated behind x402 micropayments settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/backups/2023-11/download` accepts POST requests and returns a JSON response containing the backup data. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is made per-request with no API keys, no rate limits, and no subscriptions required — just an x402-compatible payment header.\n\nThe broader lowpaymentfee.com platform lists endpoints across categories including analytics/metrics, AI inference (sentiment analysis, summarization, classification, embeddings), finance (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All are priced at $0.02 per request. Documentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available.","tags":[],"capabilities":["x402-payment","backup-download","usdc-base","per-request-billing","no-api-key"],"categories":["storage","data"],"synonyms":["backup download","data export","file download","x402 API","micropayment API","Base USDC payment","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available — request and response formats are unknown.","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content.","The nature and contents of the 'backup' data are completely undocumented.","This endpoint appears to serve a static/archival resource (2023-11 backup); its ongoing utility is unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2023-11/download","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/backups/2023-11/download","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The purpose of the backup file is entirely opaque — we don't know what data it contains or what the response format looks like.","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":"2026-04-19T15:38:10.140Z","embedding":[-0.050842285,-0.027374268,0.038146973,-0.012710571,0.011482239,-0.032714844,-0.023376465,0.03491211,0.035827637,-0.06726074,0.014129639,-0.029327393,-0.045898438,-0.037506104,-0.000647068,0.03970337,-0.022766113,-0.027175903,-0.0513916,0.006046295,0.039642334,-0.022628784,-0.005847931,0.008964539,0.012123108,-0.01121521,-0.008995056,-0.0017032623,0.001458168,-0.041656494,0.0035572052,-0.032409668,-0.024047852,0.011131287,0.0062026978,0.023391724,-0.0045280457,-0.012702942,0.012298584,-0.024154663,0.017181396,-0.070495605,0.019500732,0.02645874,-0.022140503,-0.022018433,0.032928467,-0.04144287,0.005443573,-0.01524353,-0.026245117,-0.0013933182,-0.025970459,-0.0070114136,0.021530151,0.008705139,0.029342651,0.01399231,0.010673523,-0.003993988,0.005970001,-0.0446167,-0.029083252,-0.0053977966,0.018035889,0.049743652,0.008834839,0.040863037,-0.0084991455,0.0690918,0.018173218,0.054260254,0.020690918,-0.011192322,0.0049743652,0.014320374,-0.011016846,0.05722046,0.0013141632,-0.035736084,0.019592285,-0.0024147034,-0.03945923,0.013046265,0.006542206,-0.04711914,-0.007926941,0.043518066,-0.0045928955,0.04067993,-0.047576904,0.0019721985,-0.004383087,-0.0069007874,0.010215759,-0.008796692,-0.035369873,0.0048828125,0.012245178,-0.004688263,-0.00033020973,-0.02709961,0.025131226,-0.041168213,0.023223877,0.022064209,0.033355713,-0.008552551,0.013084412,0.0058517456,-0.04724121,0.0058555603,-0.0028362274,-0.023468018,0.023773193,0.0056037903,-0.030563354,0.015159607,-0.0129852295,0.011054993,-0.05984497,0.036865234,0.009208679,0.011695862,0.030212402,-0.043884277,-0.012046814,0.0043525696,-0.05316162,-0.012809753,0.06652832,0.027496338,0.028762817,-0.043548584,0.012908936,0.0098724365,-0.020019531,-0.0010156631,-0.036010742,-0.012145996,0.02696228,-0.036193848,0.023620605,0.01864624,-0.08532715,0.016494751,-0.029922485,0.015411377,-0.020492554,-0.012130737,0.0033664703,0.014564514,0.0009946823,-0.014572144,-0.020248413,-0.023101807,-0.016448975,0.0040626526,-0.00843811,0.025970459,-0.052368164,0.034942627,-0.0003232956,-0.02796936,0.019592285,0.046447754,-0.022964478,-0.07836914,-0.09185791,-0.04232788,-0.009567261,-0.005718231,0.004055023,-0.036010742,0.0068511963,-0.041503906,-0.020263672,0.0020618439,0.03463745,-0.036376953,0.022247314,-0.06304932,0.03387451,0.0030002594,-0.052093506,0.005027771,-0.05154419,0.05444336,-0.0041007996,0.04046631,0.026046753,0.004673004,0.026626587,0.023269653,-0.024291992,-0.01626587,0.024765015,-0.036010742,0.06781006,0.011360168,-0.0033779144,-0.015403748,0.023361206,0.045532227,-0.000057041645,-0.018920898,-0.031204224,-0.057281494,-0.06335449,-0.031799316,0.019851685,0.021347046,-0.026306152,0.030532837,-0.023727417,-0.0079193115,-0.007965088,0.038208008,-0.0043182373,0.025726318,0.014411926,-0.018615723,0.015541077,0.035003662,0.0069503784,0.014930725,0.036346436,0.005622864,0.025177002,-0.039978027,0.011810303,0.027175903,-0.0385437,0.020645142,-0.012245178,0.03112793,0.006034851,-0.0087890625,-0.01209259,-0.0001963377,-0.010482788,-0.02281189,0.0076026917,0.021331787,0.02255249,-0.01927185,-0.027618408,-0.06072998,0.028060913,0.040649414,0.036468506,-0.0038909912,-0.008216858,-0.031021118,0.002506256,-0.04623413,0.03012085,0.06756592,-0.01134491,-0.005432129,-0.0015859604,-0.009117126,-0.034423828,0.010498047,0.012626648,-0.0074424744,-0.017730713,0.03012085,-0.054260254,0.004722595,0.0151901245,0.021392822,0.077941895,-0.010002136,-0.045288086,0.0009355545,-0.006706238,-0.00020575523,-0.0035266876,0.0025138855,0.0056114197,0.028137207,0.0017280579,0.0026988983,0.032714844,0.024597168,0.025146484,-0.010971069,0.0022239685,-0.02796936,-0.040100098,0.0096588135,-0.013710022,-0.043884277,0.03149414,-0.0010576248,0.035888672,-0.04284668,0.005947113,-0.006702423,0.019302368,0.012672424,-0.021408081,-0.027145386,-0.0025787354,0.00248909,-0.0054130554,0.0546875,0.014190674,-0.0038108826,-0.042175293,0.05480957,-0.030166626,-0.022323608,-0.0029010773,0.013381958,0.028411865,-0.0049095154,-0.041290283,-0.051849365,-0.00970459,-0.030258179,0.04058838,0.004119873,0.011543274,-0.012184143,-0.011657715,-0.0059280396,-0.03869629,-0.0181427,-0.021148682,0.00040006638,0.038757324,-0.021240234,-0.024307251,0.015975952,0.005256653,-0.017852783,0.009506226,0.007896423,0.00059461594,0.0019817352,-0.017700195,-0.03100586,-0.017791748,-0.029403687,0.021621704,0.020568848,-0.004928589,0.03756714,-0.068115234,-0.00356102,0.020828247,-0.023208618,0.02532959,0.013442993,-0.021377563,-0.077941895,-0.03479004,-0.037139893,-0.04458618,0.023391724,0.025650024,-0.013648987,0.04940796,-0.015808105,-0.04916382,-0.03326416,0.02645874,-0.04284668,0.015777588,0.027008057,-0.040161133,-0.008285522,-0.022827148,-0.014129639,0.0009250641,0.021942139,0.02720642,0.03378296,0.050689697,0.015975952,0.010238647,0.0524292,0.031204224,0.032318115,-0.02949524,-0.0010643005,-0.019515991,-0.03164673,0.0051727295,-0.012626648,-0.013587952,-0.06451416,0.04397583,0.064453125,0.05480957,0.013664246,0.001414299,0.00141716,-0.04333496,0.011650085,-0.050689697,-0.024383545,-0.0011167526,-0.041656494,0.037109375,0.011199951,-0.02520752,-0.044128418,-0.0131073,-0.0041542053,0.00793457,-0.046783447,0.058044434,-0.0034008026,-0.003894806,0.045013428,0.0067749023,0.05819702,0.034851074,-0.034942627,0.023361206,0.012054443,-0.024307251,0.017333984,0.036956787,0.0044136047,0.000957489,-0.0803833,-0.046691895,-0.009315491,-0.035736084,0.0013484955,-0.01776123,0.0036716461,0.04058838,0.024429321,-0.005317688,-0.009262085,0.016494751,0.024642944,-0.040924072,0.023208618,-0.032806396,-0.008926392,0.026382446,0.017974854,0.022781372,0.0029830933,0.0056037903,-0.0079574585,-0.022109985,0.012634277,0.0063323975,-0.06518555,0.023895264,-0.01398468,0.005619049,0.007369995,0.032836914,0.020370483,0.03894043,0.033111572,0.016113281,-0.03475952,-0.045135498,0.03338623,-0.07159424,-0.009002686,0.01751709,-0.0041389465,-0.02027893,0.028213501,-0.031219482,-0.038146973,-0.010139465,-0.0049476624,0.0027103424,0.016021729,-0.028381348,-0.02545166,-0.06976318,-0.026168823,-0.0047073364,0.07318115,0.039001465,0.010948181,-0.035064697,-0.039733887,0.04031372,0.0004184246,0.03781128,-0.012924194,-0.03363037,-0.001496315,-0.046569824,-0.011817932,-0.016296387,0.05859375,0.0071754456,0.009231567,0.01739502,0.043670654,0.023956299,-0.0181427,-0.0014343262,0.013549805,-0.019348145,0.012054443,0.007987976,0.019882202,0.033569336,-0.01977539,-0.018051147,0.06036377,0.010505676,0.04071045,-0.042053223,-0.00969696,-0.0024261475,0.018951416,0.024307251,-0.04537964,0.00020265579,0.0053138733,-0.044555664,-0.10614014,0.054656982,-0.03036499,0.031158447,0.0067214966,-0.0033931732,0.015426636,-0.0077438354,0.020965576,0.014251709,-0.01763916,-0.053527832,-0.0051231384,-0.006374359,-0.0025253296,-0.0005698204,-0.013191223,0.0022296906,-0.01727295,0.024414062,-0.023208618,-0.013702393,0.020980835,0.030761719,0.0005803108,0.0008363724,-0.010658264,0.008979797,0.016113281,0.0027599335,-0.02116394,0.027770996,0.0062179565,0.018692017,0.008476257,0.058685303,0.042999268,-0.015586853,-0.009307861,0.006893158,-0.0071144104,-0.024368286,-0.00012040138,0.021820068,0.010017395,0.010749817,-0.03881836,0.006515503,0.020385742,-0.03427124,-0.040924072,0.0017557144,0.016555786,-0.03161621,0.024139404,0.010414124,0.06933594,0.010513306,0.01133728,0.013572693,0.04425049,0.01361084,-0.007331848,-0.021453857,0.024795532,-0.010368347,-0.006713867,0.0021858215,0.018035889,0.037322998,-0.0027046204,0.0060768127,-0.0034065247,-0.0335083,-0.026931763,-0.023773193,0.028411865,0.024002075,-0.0005517006,0.029022217,0.0018053055,0.011703491,0.007827759,0.0287323,0.0107421875,-0.0063819885,-0.026565552,0.013343811,0.043884277,0.015792847,-0.01550293,0.02381897,0.017822266,0.01612854,-0.056762695,0.0040893555,-0.0041389465,0.022125244,-0.04925537,-0.050476074,-0.04748535,-0.0051193237,0.027801514,-0.010093689,0.007835388,0.02720642,-0.011695862,-0.0052719116,0.024002075,0.016647339,0.00434494,-0.02394104,-0.07879639,-0.010635376,0.005897522,-0.021133423,-0.037139893,0.013587952,0.005836487,-0.04196167,-0.0005106926,-0.053131104,-0.014289856,-0.008621216,-0.0010471344,0.04626465,-0.007583618,0.020309448,-0.015068054,-0.008712769,0.018173218,0.0015830994,0.024765015,-0.042022705,0.021209717,0.017364502,0.00087070465,0.0012111664,0.019180298,0.028289795,0.029922485,0.02381897,0.029525757,-0.042510986,0.016555786,-0.034332275,0.016555786,-0.023269653,-0.020080566,0.013465881,-0.018218994,0.008605957,0.028823853,-0.017089844,-0.008407593,-0.04660034,-0.05203247,0.016479492,-0.047576904,-0.0022678375,0.023651123,0.033233643,-0.02468872,0.01020813,0.004043579,-0.0010089874,-0.018615723,0.016113281,0.016098022,0.032806396,0.0154800415,0.0063095093,-0.019989014,-0.011253357,-0.021392822,-0.0062179565,-0.032989502,-0.049804688,-0.0075950623,-0.0093688965,0.011016846,-0.00080776215,-0.048614502,-0.0067749023,0.018447876,-0.041412354,0.0059051514,0.004173279,0.0070114136,0.0009069443,0.0076408386,0.0048828125,0.005657196,-0.011634827,0.024612427,0.011352539,-0.03286743,-0.039093018,0.01676941,0.029052734,0.0041236877,-0.0022087097,-0.06604004,-0.005718231,-0.033813477,-0.064208984,0.004348755,-0.0013122559,-0.017471313,-0.025985718,0.010284424,-0.034362793,0.00674057,-0.020935059,-0.03225708,0.008171082,0.011177063,0.0045776367,-0.018951416,0.023773193,-0.009346008,-0.010391235,-0.029006958,0.009353638,0.008758545,-0.004043579,-0.0032615662,0.03970337,0.008041382,-0.031982422,-0.01789856,-0.021331787,0.016174316,-0.001865387,0.003932953,-0.00022566319,0.02961731,-0.0047035217,-0.018463135,-0.046325684,0.018051147,0.06829834,0.009086609,-0.0107040405,0.01637268,-0.024597168,-0.002609253,0.027938843,-0.027740479,-0.0010299683,-0.02696228,0.019439697,-0.020248413,0.029174805,0.027374268,0.016845703,-0.0050697327,-0.0317688,0.015281677,-0.0028877258,-0.0039367676,-0.08691406,-0.0552063,-0.04925537,-0.0124053955,-0.00047564507,-0.005241394,0.007762909,0.0063171387,-0.0056381226,-0.057800293,-0.0068130493,0.045898438,-0.009124756,0.005382538,-0.00048685074,0.017318726,0.019256592,-0.0014533997,-0.03878784,0.007980347,-0.01914978,-0.017547607,-0.04776001,0.039855957,0.006614685,0.01675415,0.023864746,0.007987976,0.010169983,-0.026123047,0.016906738,-0.039611816,0.017669678,-0.0057792664,0.0015830994,-0.0032310486,0.024017334,0.025848389,-0.027938843,0.018478394,0.006298065,0.012008667,0.01524353,0.022338867,0.03933716,-0.057769775,0.026733398,0.0004451275,-0.00541687,0.015792847,-0.037139893,0.052246094,0.0066833496,-0.006843567,0.0018911362,-0.016952515,-0.0053596497,-0.008682251,-0.038513184,0.019729614,0.025619507,-0.002216339,0.008171082,0.0013608932,-0.0062026978,0.018356323,-0.008125305,-0.008628845,0.012542725,-0.029815674,0.015563965,-0.02470398,0.005947113,-0.015167236,0.03479004,0.037261963,0.047180176,0.0038051605,-0.025527954,-0.017166138,0.018112183,-0.02949524,-0.008865356,0.015586853,0.01424408,0.01991272,0.027664185,0.012969971,-0.026062012,-0.0034809113,-0.021148682,-0.0024700165,0.004108429,-0.03866577,-0.012893677,0.033691406,0.009284973,-0.0039367676,-0.01675415,-0.014701843,-0.028289795,-0.024398804,-0.025466919,-0.0006198883,0.035064697,0.017074585,-0.012268066,0.001663208,-0.008277893,0.0287323,-0.021499634,-0.03656006,0.046661377,0.03656006,0.0016832352,-0.03527832,-0.0149002075,0.00066041946,-0.01687622,-0.0019550323,-0.022247314,0.014320374,0.055480957,0.00894928,0.028961182,0.012649536,0.029968262,-0.0034675598,-0.012321472,0.009468079,0.017791748,-0.019180298,0.03503418,-0.0463562,0.0028324127,0.03213501,-0.010040283,-0.026535034,-0.016952515,-0.026016235,0.023651123,-0.004283905,0.0040664673,0.03390503,-0.0059432983,0.013244629,-0.026412964,-0.0012798309,0.012611389,-0.036254883,-0.022567749,0.005672455,0.010826111,-0.0072021484,0.008056641,-0.00982666,0.024551392,-0.017303467,0.02909851,0.009140015,0.022369385,-0.04800415,0.0006122589,-0.017440796,0.018234253,0.010398865,-0.0027446747,0.003780365,0.031463623,0.022949219,0.0067443848,0.0104904175,0.0041923523,0.049316406,-0.025939941,-0.016235352,0.0053520203,-0.037719727,0.036865234,-0.021057129,0.047668457,0.04827881,0.010787964,0.036621094,0.012809753,0.03213501,-0.0067863464,0.025543213,-0.022079468,0.027420044,-0.009094238,0.019836426,0.009223938,0.044555664,-0.007865906,-0.008712769,0.038024902,0.017807007,-0.013664246,0.045715332,0.054595947,0.02357483,-0.0047683716,0.010505676,-0.011123657,-0.04336548,-0.010009766,-0.010688782,0.04837036,0.014083862,0.026855469,0.019882202,0.01235199,-0.012771606,0.04498291,-0.033843994,-0.018966675,0.051971436,0.05770874,-0.021652222,-0.013031006,-0.01373291,-0.00157547,-0.025405884,-0.018173218,0.023834229,-0.0107040405,-0.02041626,-0.01927185,0.0077819824,-0.004306793,0.0027484894,0.0072021484,-0.006046295,-0.02532959,0.009185791,0.0021381378,0.017929077,0.015159607,-0.010818481,0.02998352,-0.009231567,0.00491333,-0.01386261,0.015060425,-0.007987976,-0.016159058,0.005569458,0.009468079,0.03564453,0.026184082,-0.0020160675,0.008506775,0.017150879,0.00907135,0.02357483,0.030578613,0.007282257,0.038909912,0.019897461,0.020889282,0.026290894,-0.009346008,0.0056037903,0.0038375854,0.0090408325,0.004108429,-0.0044937134,0.023086548,-0.012664795,0.03326416,-0.0057868958,0.0011100769,0.024215698,0.03591919,-0.017227173,0.010116577,-0.02067566,-0.00598526,-0.0031871796,0.019317627,0.012496948,-0.009513855,0.020950317,-0.0055351257,0.02670288,-0.015914917,0.009628296,-0.0013580322,-0.012161255,-0.00016605854,0.028930664,-0.051452637,-0.0016002655,0.023925781,-0.017349243,-0.03378296,0.02746582,0.012527466,-0.017318726,0.011917114,0.0002963543,-0.012138367,-0.030014038,0.03756714,0.032989502,0.006755829,-0.00033783913,-0.028884888,-0.00724411,0.0390625,-0.0022888184,-0.015464783,-0.032409668,-0.024765015,0.0005803108,0.00749588,-0.011772156,0.014808655,-0.0052833557,0.0061569214,-0.007965088,0.025421143,0.0045280457,0.007534027,-0.015945435,0.0075798035,0.009300232,0.016693115,0.011894226,-0.0023841858,-0.018234253,0.012931824,-0.03439331,0.010444641,0.025222778,-0.001490593,0.04232788,0.010765076,-0.017318726,0.0059814453,-0.044708252,0.024093628,-0.017166138,0.015716553,0.016052246,0.03274536,-0.010421753,-0.03604126,0.0073127747,-0.019973755,-0.028457642,0.00076150894,0.017654419,-0.005870819,0.016082764,0.061553955,0.014122009,-0.005218506,0.059295654,0.0010175705,0.038269043,-0.019332886,0.0019454956,0.032470703,0.012397766,0.034423828,-0.011512756,-0.0027713776,-0.036376953,0.026168823,0.018127441,0.01979065,0.02015686,0.01109314,-0.011505127,0.034301758,-0.009300232,0.010681152,0.027526855,0.010505676,0.018569946,-0.035064697,-0.011398315,0.005027771,-0.006454468,-0.0034332275,0.04248047,0.004470825,-0.009727478,-0.008743286,-0.015159607,0.028121948,-0.00944519,-0.005142212,0.0021781921,-0.018692017,0.011932373,-0.022888184,-0.020965576,0.019546509,0.021865845,-0.04925537,-0.009284973,0.018234253,0.02079773,-0.037963867,0.021331787,0.044189453,0.019241333,0.0062179565,0.022018433,-0.018051147,0.021774292,-0.0055007935,0.018951416,0.057525635,0.015220642,-0.0107040405,0.010002136,0.0046844482,-0.007873535,0.0043182373,0.028686523,0.006942749,0.026290894,0.00969696,-0.0054893494,-0.0041885376,0.019042969,-0.0053749084,-0.0048217773,-0.01889038,0.010345459,0.0061454773,-0.002357483,-0.0037765503,0.010604858,-0.0052986145,-0.007293701,0.035308838,0.03161621,0.032104492,-0.03982544,-0.0065231323,-0.006465912,-0.00062036514,0.0030498505,-0.023101807,0.0074424744,-0.01701355,-0.00006347895,0.023849487,0.000992775,0.014205933,-0.018310547,-0.008575439,0.03366089,0.030181885,0.015129089,-0.0059928894,-0.009613037,-0.00381279,-0.018997192,0.00856781,-0.019012451,-0.0152282715,0.0037326813,0.037078857,-0.005077362,-0.029006958,0.01927185,0.0044822693,-0.006137848,-0.030166626,0.025497437,0.019699097,-0.004310608,-0.0035476685,-0.002735138,0.036102295,-0.010131836,-0.03036499,-0.01953125,0.02130127,0.041778564,0.011276245,-0.015129089,0.011734009,0.04373169,-0.0011901855,0.03894043,0.010017395,0.049560547,-0.0061073303,-0.02456665,-0.035614014,0.014808655,-0.014762878,-0.026367188,0.017288208,-0.015327454,-0.0128479,0.001373291,0.0078048706,-0.020629883,-0.03970337,-0.011054993,-0.04135132,-0.018493652,0.036743164,-0.0018482208,0.02734375,-0.019134521,0.0005893707,0.035003662,-0.036743164,-0.05505371,-0.007572174,0.008728027,-0.028930664,-0.04949951,0.0064430237,-0.0012731552,0.0074310303,-0.027542114,0.015426636,0.0047912598,0.020706177,-0.022201538,-0.020370483,-0.005306244,0.015167236,0.0031814575,0.0032424927,0.0008006096,-0.035186768,-0.0335083,-0.032104492,0.019744873,-0.01637268,0.031204224,0.008911133,0.04107666,0.03149414,-0.04019165,-0.0030117035,0.005504608,-0.013145447,-0.0039520264,-0.014961243,-0.022567749,0.015129089,0.045318604,-0.0053634644,-0.012924194,0.04559326,-0.0038871765,-0.016571045,0.019699097,0.025848389,-0.0053596497,0.015403748,0.015548706,0.009895325,-0.0032615662,-0.008758545,0.0013847351,0.006576538,0.016998291,-0.026306152,0.0037460327,0.007171631,0.015426636,-0.028182983,-0.005607605,0.026138306,0.006755829,-0.01499176,0.029815674,0.0031490326,0.017211914,0.00018382072,-0.04888916,0.0076446533,0.08251953,0.013648987,0.00046396255,0.004989624,0.010787964,-0.048339844,0.0071907043,0.008026123,-0.0056114197,-0.037872314,-0.016494751,-0.03302002,0.019607544,-0.0085372925,0.0035972595,-0.019561768,0.03353882,-0.006385803,-0.02909851,0.0022506714,0.03338623,0.01550293,-0.03591919,0.0021591187,-0.008888245,-0.008071899,-0.012886047,0.013008118,-0.047302246,-0.021331787,-0.022949219,-0.010253906,0.0024204254,0.0032978058,-0.007411957,-0.011787415,-0.0006494522,-0.016403198,0.012481689,0.020568848,-0.0065307617,-0.016525269,0.004776001,0.023590088,-0.009735107,0.01146698,-0.006465912,0.005710602,0.007411957,-0.012535095,0.029815674,-0.0039863586,0.0005955696,0.0073623657,-0.017532349,0.021133423,-0.0032863617,0.032562256,-0.01739502,-0.010314941,-0.01348114,-0.009788513,0.018051147,0.015701294,-0.019805908,0.01158905,-0.024795532,-0.028503418,-0.0042037964,-0.0099105835,0.02243042,-0.003862381,0.032470703,-0.014930725,-0.006931305,0.0010309219,-0.0004878044,-0.015083313,-0.009185791,0.017410278,-0.01713562,-0.0074310303,0.00447464,-0.0056495667,-0.02394104,-0.020370483,0.015655518,0.0046043396,0.004776001,0.041137695,0.021759033,0.039886475,0.0014181137,0.039093018,0.000644207,0.008407593,0.03338623,0.016693115,0.05090332,-0.028060913,-0.019485474,-0.003162384,0.010910034,-0.007583618,-0.0005273819,0.013031006,-0.024246216,-0.055633545,0.010314941,-0.018218994,0.01486969,-0.0032157898,0.019424438,-0.036712646,0.0029850006,-0.031173706,0.0010671616,-0.052581787,0.023498535,0.03012085,-0.009963989,0.006324768,0.00075149536,-0.042938232,0.022018433,0.021621704,-0.011940002,-0.023254395,-0.018630981,-0.0002539158,0.002571106,0.010643005,0.022567749,-0.02027893,-0.002626419,0.008651733,-0.025100708,-0.011604309,-0.0049209595,0.033294678,0.0076026917,-0.01386261,-0.031219482,0.020462036,0.010604858,-0.016342163,0.0046958923,-0.005252838,0.025283813,0.02494812,0.0035324097,0.019073486,-0.0050621033,-0.045806885,0.052337646,0.0058670044,0.017044067,-0.005874634,0.009963989,-0.039245605,-0.0074539185,0.01084137,-0.00242424],"createdAt":"2026-04-18T19:29:49.237Z","updatedAt":"2026-04-22T16:32:25.919Z","lastSeenAt":"2026-04-22T16:32:25.919Z","tsv":"'-11':3,17 '/api/v1/backups/2023-11/download':85 '0.02':12,26,118,185 '000':107 '0x8335':112 '20':106 '2023':2,16,42 '2913':113 '6':122 'Base USDC payment' 'accept':86 'access':34 'across':154 'advertis':101 'ai':65,158 'analysi':161 'analytics/metrics':157 'api':69,132,197 'avail':226 'backup':4,18,38,96 'backup download' 'backup-download' 'base':10,24,80,108,115 'behind':72 'broader':149 'categori':155 'challeng':100 'classif':163 'compat':145 'connect':206 'contain':94 'convers':179 'cost':104 'data':5,19,64,97 'data export' 'decim':123 'detail':212 'doc':196 'document':188,221 'download':1,15,37 'embed':164 'endpoint':30,53,84,153 'equal':117 'estim':173 'exampl':225 'exchang':168 'extrem':193 'feed':167 'file':39 'file download' 'financ':66,165 'gas':172 'gate':71 'generat':180 'geocod':177 'header':147 'host':60 'includ':156 'infer':159 'infrastructur':175 'json':92 'key':133 'limit':136 'list':152 'lowpaymentfee' 'lowpaymentfee.com':32,57,150 'made':126 'mani':52 'maximum':103 'micropay':8,22,74 'micropayment API' 'network':81 'no-api-key' 'novemb':41 'offer':54 'one':50 'openapi':216 'page':201 'payment':46,124,146 'per':13,27,128,186 'per-request':127 'per-request-billing' 'platform':58,151 'post':87 'price':166,183,198 'prompt':208 'protocol':47 'provid':33 'quot':171 'rate':135,169 'readm':200 'render':203 'request':14,28,88,129,187 'request/response':219 'requir':140 'respons':93 'return':90 'schema':220 'sentiment':160 'settl':75 'site':191 'spars':194 'spec':217 'specif':83 'subscript':139 'summar':162 'token':170 'unit':109 'usag':224 'usd':119 'usdc':77,111,120 'usdc-base' 'use':121 'util':68,176 'valid':178 'varieti':62 'via':6,20,43 'wallet':207 'x402':7,21,45,73,99,144 'x402 API' 'x402-compatible':143 'x402-payment'","prices":[{"id":"6c326598-af21-4eb1-a1c5-e85ae0753da4","listingId":"ff62242c-d313-4a07-8bce-ccb18848d1a9","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/backups/2023-11/download","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:49.237Z"}],"sources":[{"listingId":"ff62242c-d313-4a07-8bce-ccb18848d1a9","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2023-11/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:49.237Z","lastSeenAt":"2026-04-22T16:32:25.919Z"}],"details":{"listingId":"ff62242c-d313-4a07-8bce-ccb18848d1a9","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-11/download \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-11/download"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-11/download"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Downloading archived backup data for November 2023","Programmatic retrieval of historical data snapshots","Agent-driven data acquisition with per-call crypto payment"],"bestFor":["Agents or scripts that need one-off backup data retrieval without subscription overhead","Developers experimenting with x402 micropayment-gated APIs","Automated workflows requiring pay-per-use data downloads on Base"],"notFor":["Users needing detailed API documentation or request/response schemas before integrating","High-volume bulk data retrieval where per-request pricing may add up","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.267Z"},"updatedAt":"2026-04-22T16:32:25.919Z"}}