{"id":"43425fe2-779c-4fcc-9cfc-3007e11ca1b7","shortId":"MBGmNV","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource at `/api/v1/charges/70` is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, payable in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and settling payments in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base). The `maxAmountRequired` is 20000 base units, which at 6 decimals equals $0.02. The payment scheme is \"exact,\" meaning the caller pays the precise amount per request. Timeout is 300 seconds.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. The specific functionality behind `/api/v1/charges/70` is not documented; it is labeled only as \"Premium API Access\" without details on input parameters, expected output, or what data or service it returns. The broader site lists endpoints for metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation, but none of these map directly to the `/charges/70` path. Prospective users should be aware that the actual behavior of this specific endpoint is unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-method"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-call API","USDC API access","Base network API","micropayment API","lowpaymentfee"],"warnings":["The specific endpoint /api/v1/charges/70 is not listed among the provider's documented APIs — its actual functionality is unknown.","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no usable content.","No input parameters or output schema are documented for this endpoint.","No OpenAPI spec or machine-readable schema is available."],"endpointUrl":"https://lowpaymentfee.com/api/v1/charges/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/v1/charges/70","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation on what the endpoint actually does, no input/output schema, no examples, and the docs pages are empty. The specific path /api/v1/charges/70 does not correspond to any documented endpoint on the site.","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":"2026-04-19T04:05:53.679Z","embedding":[-0.021057129,-0.04611206,0.039276123,0.02520752,0.0031204224,-0.028686523,-0.019592285,0.03933716,0.075927734,-0.0713501,0.0309906,-0.045196533,-0.029830933,-0.03326416,-0.030014038,0.023147583,-0.021865845,0.014831543,-0.042541504,0.03237915,0.022155762,-0.026428223,-0.014198303,0.03338623,-0.0020160675,-0.028213501,-0.008377075,-0.0154953,-0.006450653,-0.03842163,0.025985718,-0.021957397,-0.011482239,0.008644104,-0.017837524,-0.01676941,-0.011558533,0.049804688,0.030014038,-0.012336731,-0.0038471222,-0.064941406,-0.008934021,-0.0005903244,-0.06665039,-0.0005197525,0.005191803,-0.018112183,-0.0018491745,0.005252838,-0.030410767,-0.008865356,-0.010002136,-0.009819031,0.008934021,0.0043029785,0.00034356117,-0.0126571655,0.012359619,0.014160156,0.003856659,-0.0803833,-0.018615723,-0.015426636,-0.005126953,0.05657959,-0.011375427,0.053131104,0.011100769,0.05630493,0.03677368,0.052581787,0.037322998,0.014671326,0.0022258759,0.0029296875,0.008575439,0.051849365,-0.010536194,-0.0060806274,-0.030456543,-0.014015198,-0.049072266,-0.009902954,-0.02128601,-0.039398193,-0.023483276,0.015655518,-0.021575928,0.015975952,-0.07019043,0.002204895,-0.009994507,-0.000101566315,0.010345459,-0.010971069,-0.02015686,0.025543213,-0.0069885254,0.020874023,0.013031006,-0.035095215,0.015281677,0.012306213,0.046905518,0.05859375,0.03225708,0.03225708,-0.007331848,-0.022781372,-0.015357971,0.026290894,-0.023040771,-0.018447876,0.016174316,0.015068054,-0.012886047,0.020126343,-0.033416748,0.026550293,-0.049438477,0.039855957,0.033447266,-0.0184021,0.025344849,-0.041259766,-0.011009216,0.023040771,-0.030212402,-0.008216858,0.022583008,0.015464783,0.045043945,-0.01852417,-0.027679443,-0.008544922,-0.0236969,-0.019943237,-0.055908203,-0.039215088,0.040863037,-0.026107788,0.036499023,0.042785645,-0.093688965,-0.0009918213,-0.04498291,0.011619568,-0.033325195,-0.0031013489,-0.0035686493,0.018432617,-0.011856079,-0.0022010803,-0.024261475,-0.020050049,-0.00024795532,0.037841797,-0.030303955,0.046081543,-0.00054836273,0.030014038,0.0040779114,-0.0073776245,0.03225708,0.03250122,-0.0007710457,-0.06945801,-0.08428955,-0.033081055,-0.0138168335,-0.0211792,-0.0335083,0.006412506,-0.0060539246,-0.074035645,-0.020187378,-0.0009717941,-0.00084877014,-0.03744507,-0.0061912537,-0.034820557,0.016860962,-0.01158905,-0.07019043,-0.01876831,-0.020996094,0.07446289,0.029876709,0.008758545,0.04156494,-0.018371582,0.063964844,0.020751953,-0.031921387,-0.028549194,0.022460938,-0.010650635,0.016860962,-0.012886047,-0.0014390945,-0.026184082,0.037628174,0.06500244,0.023162842,-0.020645142,-0.008224487,-0.042144775,-0.043151855,-0.03933716,0.005241394,0.0011520386,0.007205963,0.047058105,-0.027420044,-0.037139893,-0.009864807,0.0077781677,0.008995056,0.04550171,0.01486969,-0.0062294006,0.014251709,0.014778137,-0.04095459,0.034820557,0.030349731,0.013191223,-0.023834229,-0.033721924,0.024505615,0.015213013,-0.033233643,0.013656616,-0.023727417,0.022094727,0.00040841103,0.026535034,0.026977539,-0.020584106,-0.027008057,-0.025802612,-0.012771606,0.025924683,0.0030384064,-0.024093628,-0.043823242,-0.08343506,0.044891357,0.03363037,0.031982422,-0.009147644,0.016708374,-0.02330017,-0.014465332,-0.068237305,0.061279297,0.08721924,-0.017868042,-0.024154663,0.013313293,-0.021255493,-0.040252686,-0.0047073364,-0.012458801,-0.035308838,-0.02243042,0.011886597,-0.046691895,-0.003042221,0.014411926,0.023971558,0.06555176,-0.0065956116,-0.05709839,-0.028137207,-0.00042796135,0.012802124,-0.029052734,-0.00598526,-0.007217407,0.032226562,0.03286743,-0.012886047,0.02470398,-0.0039138794,0.011856079,-0.0046958923,0.0025424957,-0.00982666,-0.01675415,0.00983429,-0.00793457,-0.06573486,0.0075531006,-0.006919861,0.061401367,-0.045928955,0.048828125,-0.0048599243,0.012084961,0.06616211,-0.006954193,-0.053588867,0.015411377,0.035339355,0.028839111,0.036987305,-0.0018129349,-0.027923584,-0.0087509155,0.068847656,-0.011260986,-0.011276245,0.0024032593,0.0036849976,0.029907227,0.0035266876,-0.06323242,-0.036712646,-0.0107040405,-0.022872925,0.018722534,-0.02305603,0.030410767,-0.008476257,0.0047836304,-0.017089844,0.0039405823,-0.027175903,0.02130127,-0.023239136,0.017440796,-0.019805908,-0.0109939575,0.020217896,0.008338928,-0.02319336,0.0017251968,0.044708252,0.028533936,-0.011077881,-0.038513184,-0.025939941,-0.004878998,-0.0035037994,0.025787354,0.015556335,0.022705078,0.05041504,-0.04498291,0.028076172,0.030517578,0.013618469,0.041168213,-0.0061302185,0.00066041946,-0.058166504,-0.051452637,-0.03274536,-0.036468506,0.039001465,0.009506226,-0.0070343018,0.054901123,0.0051231384,-0.023895264,-0.034820557,0.017791748,-0.044647217,-0.004447937,0.039398193,0.000582695,-0.024978638,-0.008399963,-0.0019216537,0.0011014938,0.032928467,0.01651001,-0.0027542114,0.06896973,0.037078857,-0.005908966,0.022842407,0.016921997,0.013687134,-0.0013484955,-0.033569336,-0.016067505,-0.011383057,0.022476196,-0.0061149597,-0.022949219,-0.060180664,0.051361084,0.04473877,0.08111572,0.019454956,0.0058937073,0.032592773,-0.010398865,0.009010315,-0.028656006,-0.013092041,-0.018920898,-0.05291748,0.018737793,-0.016067505,-0.019210815,-0.02420044,0.048431396,0.0028705597,0.016189575,-0.03540039,0.048736572,0.003604889,-0.0113220215,0.031677246,0.008575439,0.04385376,0.06304932,-0.047210693,0.024124146,0.027053833,-0.037200928,-0.0007596016,0.05203247,-0.015281677,-0.012802124,-0.057373047,-0.013122559,0.0033664703,-0.012062073,-0.056854248,-0.0011053085,0.0057411194,0.016952515,0.03024292,-0.0011806488,-0.029266357,-0.009117126,-0.019607544,-0.05569458,-0.0077400208,-0.031097412,0.00818634,0.053009033,-0.026687622,0.0141067505,0.008010864,-0.0048294067,-0.010887146,0.006801605,0.015068054,-0.009147644,-0.045928955,0.02861023,0.014816284,0.0143585205,0.008460999,0.032348633,0.026763916,0.020828247,0.04727173,0.01586914,-0.0104904175,-0.06768799,0.023651123,-0.045043945,0.0056610107,0.018035889,-0.022415161,-0.006111145,-0.02609253,-0.01928711,-0.03527832,-0.003232956,-0.029449463,0.0066871643,0.014091492,-0.03173828,-0.041809082,-0.047821045,-0.006462097,-0.0043182373,0.061767578,0.030426025,0.002040863,-0.068115234,-0.011627197,0.025726318,0.00724411,-0.0008277893,-0.015083313,-0.014633179,-0.009437561,-0.024353027,-0.0028133392,-0.012504578,0.011802673,-0.008773804,-0.008995056,0.0385437,0.0014438629,0.023635864,0.010131836,0.017105103,0.05130005,-0.02520752,-0.0021076202,-0.03253174,0.031066895,-0.0019435883,-0.017471313,-0.05505371,0.04321289,0.023925781,0.030883789,-0.034301758,0.014793396,-0.003917694,0.016433716,0.013999939,0.002210617,-0.0043678284,-0.012809753,-0.05441284,-0.056488037,0.033447266,-0.017501831,0.030029297,0.0058403015,-0.006011963,0.022201538,-0.0038375854,0.0036125183,0.017807007,-0.028793335,-0.006690979,-0.025894165,-0.029556274,-0.011642456,-0.017349243,-0.018722534,0.019622803,-0.017791748,0.028320312,-0.0008172989,-0.02017212,0.020858765,0.0033721924,0.001004219,0.015640259,-0.0012741089,0.01637268,0.04296875,0.012565613,-0.039916992,0.027313232,-0.007019043,0.002521515,-0.013267517,0.042022705,0.027267456,-0.0073165894,-0.0029201508,-0.0036621094,-0.0065956116,-0.026504517,0.0035896301,0.015777588,0.022766113,0.00071907043,-0.041534424,0.032043457,0.0018520355,-0.0345459,-0.009819031,0.013786316,0.015945435,-0.03479004,0.025787354,0.03012085,0.064819336,-0.029266357,-0.004333496,0.012199402,0.03527832,0.028244019,0.021072388,-0.017120361,0.018997192,0.003730774,0.022140503,-0.007881165,-0.00920105,0.0033397675,-0.0034542084,0.022155762,0.024124146,0.0043792725,-0.017852783,-0.012207031,0.007019043,-0.00440979,-0.017150879,0.014701843,0.026947021,0.024139404,-0.02281189,0.018630981,0.008583069,-0.019760132,-0.024291992,0.0061836243,0.043548584,-0.019729614,-0.017089844,0.01638794,0.017211914,0.034973145,-0.0546875,-0.00844574,0.008544922,0.006717682,-0.026977539,-0.042938232,-0.033447266,0.026535034,0.027572632,0.0010557175,0.018188477,0.030212402,0.0025844574,0.004676819,0.032318115,0.00793457,-0.013473511,-0.00932312,-0.04623413,0.006336212,-0.010528564,-0.0060043335,-0.0309906,0.0003118515,-0.020004272,-0.04373169,0.007434845,-0.010650635,-0.0041656494,-0.008262634,0.012702942,0.032806396,-0.004776001,0.008766174,-0.018508911,-0.02796936,0.0004618168,-0.0027809143,0.021881104,-0.048461914,0.013549805,-0.019363403,-0.0064353943,0.010284424,0.011436462,0.02192688,0.027816772,0.00047969818,0.03012085,-0.051116943,0.035095215,-0.03375244,0.013870239,0.016357422,-0.047729492,-0.0070152283,-0.027664185,-0.013504028,0.03353882,-0.016662598,-0.015357971,-0.02947998,-0.032928467,-0.004261017,-0.050201416,0.029220581,0.037994385,0.027923584,-0.025970459,-0.0024852753,-0.001077652,-0.0023479462,-0.021591187,0.0075950623,-0.024505615,0.005077362,0.014633179,0.01512146,-0.0335083,-0.02381897,-0.017349243,0.011131287,-0.04574585,-0.048461914,-0.016860962,0.004196167,-0.01675415,-0.010223389,-0.022125244,-0.017242432,-0.0073432922,-0.04559326,0.014122009,0.011558533,0.026000977,0.008049011,-0.011558533,-0.004371643,0.012283325,-0.013298035,0.034729004,0.010147095,-0.001619339,-0.034118652,-0.0016365051,0.039031982,0.01940918,0.0036449432,-0.009422302,-0.0075531006,-0.013458252,-0.051818848,-0.0035934448,-0.0026988983,0.0004312992,-0.0063934326,0.012062073,-0.04095459,-0.0010414124,-0.02305603,-0.002784729,0.016098022,0.015106201,0.02027893,-0.0006599426,0.008163452,-0.016281128,-0.027236938,-0.022644043,0.029342651,0.010925293,0.0042648315,0.011108398,0.033050537,0.014579773,-0.009849548,-0.0050468445,0.004501343,0.018981934,-0.031951904,0.0028800964,-0.016281128,0.011360168,-0.018981934,-0.00440979,-0.037628174,-0.013031006,0.079589844,-0.0012044907,-0.020233154,0.00070524216,-0.013092041,0.021377563,0.018569946,-0.044708252,-0.0067481995,-0.04522705,0.01550293,-0.028869629,0.014915466,0.00059366226,0.013519287,-0.026916504,-0.062347412,-0.018417358,0.0040893555,-0.023925781,-0.06060791,-0.01826477,-0.06915283,-0.007259369,-0.0023899078,-0.016555786,-0.00021278858,0.013389587,-0.009765625,-0.09185791,0.0041160583,0.0513916,0.008132935,0.017654419,-0.018859863,0.0065078735,0.02192688,-0.03515625,-0.014831543,0.038635254,-0.021484375,-0.008018494,-0.014846802,0.020111084,-0.018218994,-0.024246216,0.020370483,0.016571045,0.013183594,-0.00856781,0.012786865,-0.0071868896,0.010597229,-0.0050621033,0.016723633,-0.0064048767,-0.013252258,0.028839111,-0.046783447,0.031173706,0.022323608,0.004508972,0.0078048706,0.019882202,0.038970947,-0.03338623,-0.018310547,0.021530151,0.004119873,0.040252686,-0.03100586,0.040893555,0.021026611,-0.004840851,0.025665283,-0.015388489,-0.026992798,-0.035705566,-0.030136108,0.025604248,0.006706238,0.0138168335,-0.013046265,0.012336731,0.010032654,-0.011436462,0.015808105,-0.01171875,-0.026824951,0.0010843277,0.0016145706,0.0047836304,0.0004887581,-0.0046081543,0.030700684,0.007659912,0.03387451,0.010597229,-0.005542755,-0.0034275055,0.022354126,-0.017028809,0.012588501,0.019592285,0.007144928,0.030410767,0.019424438,0.0056915283,-0.03778076,-0.01927185,-0.022201538,0.00022041798,0.0040893555,-0.019317627,-0.011238098,-0.01763916,0.004310608,-0.0050697327,-0.036712646,0.0121154785,-0.027236938,-0.017242432,-0.0065994263,-0.009880066,0.014144897,0.0029315948,0.0068092346,0.018630981,0.005214691,0.045532227,0.0028438568,-0.0012617111,0.019073486,0.035247803,0.019561768,-0.023529053,-0.005279541,-0.009559631,0.0017585754,0.0034370422,-0.020355225,0.022979736,0.047546387,-0.008293152,0.019683838,-0.007457733,0.019897461,-0.012954712,0.0105896,-0.011161804,0.016174316,-0.0129470825,0.024780273,-0.04373169,0.018203735,0.018615723,-0.006351471,-0.012527466,-0.0072364807,-0.02217102,0.017745972,0.009628296,-0.00026106834,0.036468506,-0.005718231,0.021560669,-0.027755737,-0.010177612,0.009674072,-0.03756714,-0.014030457,0.035125732,0.0073623657,-0.0003607273,0.015655518,-0.035858154,0.038238525,-0.029266357,0.026779175,-0.0071258545,0.0010900497,-0.007549286,-0.0129470825,-0.029342651,-0.01398468,-0.0098724365,0.009643555,-0.0018873215,0.039031982,0.022003174,0.032928467,0.05493164,0.014076233,0.0032577515,-0.039978027,-0.032165527,0.0019302368,-0.029953003,0.023956299,-0.009025574,0.04724121,0.035705566,0.0025253296,0.034362793,0.039123535,0.024276733,-0.0034370422,0.01184845,-0.015571594,0.004547119,-0.0006222725,0.026260376,0.0008535385,0.04336548,-0.024658203,0.023071289,0.01739502,0.031097412,-0.030563354,0.025024414,0.07342529,0.019851685,-0.012321472,0.031311035,-0.0011615753,-0.01612854,-0.013923645,-0.016983032,0.047790527,0.009056091,0.05206299,0.05255127,0.017684937,-0.016937256,0.025344849,-0.028549194,-0.028213501,0.06829834,0.024398804,-0.02557373,-0.015914917,-0.004508972,0.01033783,-0.0513916,-0.0259552,0.011230469,-0.009025574,0.014953613,-0.006980896,-0.009414673,-0.017562866,0.021987915,0.030273438,0.021881104,-0.018722534,0.021652222,0.028427124,0.003271103,0.016464233,0.0037117004,0.015213013,-0.025650024,-0.016952515,0.017623901,0.02053833,-0.013046265,-0.012184143,0.023925781,0.013587952,0.054351807,0.03201294,-0.019958496,0.015388489,0.04220581,0.022644043,-0.006828308,0.046844482,0.044769287,0.01524353,0.034942627,0.037841797,0.027557373,-0.034088135,0.0154800415,0.00079250336,0.0124053955,0.003168106,-0.009597778,0.007701874,-0.01789856,0.0154953,0.0010852814,-0.00970459,0.024368286,0.029846191,-0.0015249252,-0.010940552,-0.0049705505,0.0043792725,-0.012748718,-0.0064849854,0.009513855,-0.012954712,0.026794434,0.00031399727,0.03515625,-0.018859863,0.022857666,-0.006336212,-0.022033691,-0.010177612,0.02003479,-0.050567627,-0.0005235672,-0.00033164024,-0.0061950684,-0.040405273,0.014434814,0.018432617,-0.012214661,0.02458191,0.0061950684,0.0023059845,0.0050964355,0.025619507,0.0051078796,-0.00079631805,-0.007232666,-0.0143585205,0.032928467,0.044189453,0.002412796,0.014671326,-0.02331543,-0.005958557,-0.001914978,-0.004310608,-0.008018494,-0.006893158,-0.023986816,-0.027069092,0.01675415,0.03375244,0.026016235,0.033081055,-0.0048599243,-0.014343262,0.0058250427,0.025558472,0.014076233,0.00881958,-0.013587952,0.019226074,-0.009605408,0.05178833,0.030883789,0.009780884,0.024490356,-0.0061454773,-0.01675415,0.0030994415,-0.013641357,0.034484863,-0.017074585,0.011627197,-0.012489319,0.019241333,-0.020401001,-0.02368164,0.011123657,-0.011077881,-0.01763916,-0.028640747,-0.006374359,0.014976501,0.023010254,0.036254883,0.01260376,-0.026062012,0.06518555,-0.010627747,0.04989624,0.0027580261,-0.0012979507,0.045135498,0.029876709,0.04083252,0.019515991,0.0055999756,-0.04107666,0.0074806213,0.03933716,0.025604248,0.010650635,0.002658844,-0.019943237,0.03768921,-0.0069274902,0.03074646,-0.004940033,-0.0050811768,0.010520935,-0.006641388,0.0051078796,0.009597778,-0.010147095,0.0045318604,0.0418396,-0.030532837,-0.01398468,-0.020858765,-0.00819397,0.020980835,-0.0028934479,0.006374359,0.0047798157,-0.014183044,0.016494751,-0.03744507,-0.023086548,0.011177063,0.023391724,-0.043884277,-0.019470215,0.001876831,0.01676941,-0.023834229,0.025283813,0.024856567,-0.009170532,0.001408577,0.045776367,-0.0155181885,0.024780273,-0.0121154785,0.029342651,0.03527832,0.0074157715,-0.014198303,0.0053863525,0.0052986145,-0.012748718,0.0060806274,0.037261963,-0.012016296,0.010536194,-0.0030879974,-0.024810791,0.009101868,-0.0037517548,-0.010437012,0.010536194,-0.01777649,-0.008369446,-0.00086450577,0.0044784546,0.0034637451,0.0060577393,-0.016860962,-0.0063705444,0.0074043274,0.03149414,0.019561768,-0.047454834,0.0023269653,0.009765625,0.007881165,-0.031707764,-0.016464233,0.000113487244,-0.030197144,0.0124053955,0.014320374,0.007297516,0.014518738,-0.016799927,-0.001958847,0.022125244,0.00843811,0.021896362,0.0047302246,0.004169464,0.014411926,-0.01763916,-0.003993988,-0.00010961294,-0.01171875,0.011940002,0.011123657,-0.002193451,-0.025650024,0.032348633,-0.0014343262,0.020614624,-0.00283432,-0.016418457,0.018249512,-0.010513306,-0.015335083,0.010437012,0.017669678,-0.016708374,-0.01826477,-0.018417358,0.026809692,0.05810547,-0.004966736,-0.010879517,0.023529053,0.010017395,0.02609253,0.03970337,0.015151978,0.043701172,0.030014038,-0.016601562,-0.01083374,0.017715454,-0.006717682,-0.03237915,0.015853882,-0.005756378,-0.010009766,0.010223389,0.025939941,-0.006752014,-0.017211914,-0.02078247,-0.012680054,-0.016845703,0.014976501,-0.011749268,0.02180481,-0.02558899,-0.006790161,-0.002155304,-0.018920898,-0.045318604,-0.026382446,-0.0042762756,-0.015731812,-0.052093506,0.0071640015,-0.03857422,0.008583069,-0.015464783,-0.008628845,-0.01158905,0.022659302,-0.020233154,-0.0065460205,0.0065307617,0.019195557,0.025054932,0.0064315796,0.018692017,-0.029922485,-0.038208008,-0.029266357,-0.009803772,-0.015174866,0.021728516,0.0057907104,0.032928467,0.019622803,0.0046577454,-0.00071048737,-0.0070610046,-0.0049209595,-0.0019416809,-0.029403687,-0.008995056,0.0259552,0.009239197,-0.016143799,-0.012237549,0.038024902,-0.031402588,-0.01512146,0.029586792,0.045776367,0.005882263,0.034301758,-0.012763977,0.0012025833,-0.020248413,0.0018672943,-0.026504517,0.005268097,0.0057907104,-0.006046295,-0.0065078735,0.0031204224,0.021270752,-0.004737854,-0.016571045,0.025360107,-0.0021419525,-0.020812988,0.028060913,0.01890564,0.011520386,-0.007209778,-0.017333984,0.02281189,0.03161621,0.008255005,0.0046806335,-0.0038700104,0.014305115,-0.0126571655,0.013046265,0.025680542,-0.017410278,-0.038879395,-0.021759033,-0.026489258,0.01461792,0.013999939,0.02432251,-0.011749268,0.016784668,-0.024673462,-0.029632568,-0.023529053,0.021469116,0.0118637085,-0.0037841797,-0.015083313,0.0021400452,0.019821167,-0.020690918,-0.0056648254,-0.032287598,-0.023025513,-0.008422852,-0.027038574,0.018417358,0.011566162,-0.016967773,-0.0026454926,-0.010421753,0.0026340485,0.009765625,0.039855957,-0.0118637085,0.0008454323,0.024658203,0.018051147,-0.026550293,0.0076293945,-0.014503479,-0.0062026978,0.01209259,-0.006664276,0.01360321,-0.022064209,0.04171753,-0.00415802,0.0010223389,0.034820557,-0.0047798157,0.010002136,-0.022018433,0.007331848,0.005744934,-0.00045108795,0.034301758,-0.019042969,-0.01612854,0.010986328,-0.022705078,-0.037628174,0.0053749084,0.024124146,0.043548584,-0.006793976,0.04220581,-0.021377563,-0.020751953,0.020309448,-0.00031089783,-0.028152466,-0.0006227493,0.033325195,0.010231018,-0.014038086,-0.008911133,-0.016937256,-0.039215088,-0.0014095306,0.022354126,0.0055618286,-0.010124207,0.01737976,0.009498596,0.046844482,0.0017967224,0.02128601,0.009262085,0.0041389465,0.019348145,0.0020065308,0.053131104,0.0006685257,-0.032226562,0.008682251,-0.004840851,-0.026016235,-0.012062073,-0.0037345886,0.006252289,-0.044708252,0.020217896,-0.005088806,0.03640747,-0.01763916,0.0051879883,-0.026657104,0.0012674332,-0.044281006,-0.011306763,-0.035217285,0.009719849,0.04296875,-0.0047683716,0.022460938,0.0087509155,-0.009185791,0.014320374,0.047027588,-0.007335663,-0.030776978,-0.004764557,0.022827148,0.008476257,0.008102417,0.01235199,-0.0010814667,-0.017868042,0.0072517395,-0.018539429,0.016799927,-0.0043907166,0.0060272217,0.0070724487,0.0060577393,-0.0016765594,0.030715942,-0.0001282692,-0.004558563,0.004047394,0.00982666,0.037353516,0.037231445,-0.0151901245,0.027816772,0.012313843,-0.039764404,0.059661865,0.0015468597,0.032318115,-0.01828003,-0.007659912,-0.036956787,-0.030273438,-0.016860962,0.0071792603],"createdAt":"2026-04-18T18:45:37.448Z","updatedAt":"2026-04-23T21:32:04.360Z","lastSeenAt":"2026-04-23T21:32:04.360Z","tsv":"'/api/v1/charges/70':48,172 '/charges/70':229 '/request':13,28 '0.02':12,27,77,127 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':113 '20000':119 '300':144 '6':124 'Base network API' 'USDC API access' 'accept':104 'access':7,22,38,183 'actual':238 'ai':64 'amount':139 'analysi':207 'analyt':63 'api':6,21,37,89,152,182 'awar':235 'base':9,24,85,115,120 'base-network' 'behavior':239 'behind':171 'broader':199 'call':4,19 'caller':135 'categori':60 'challeng':98 'classif':210 'commit':94 'confirm':99 'connect':161 'content':167 'contract':112 'convers':218 'data':62,193 'decim':125 'detail':185 'direct':226 'doc':151 'document':146,175 'embed':211 'endpoint':32,53,73,101,202,243 'equal':126 'exact':132 'exchang':214 'expect':189 'extrem':148 'feed':213 'financ':67 'function':170 'generat':220 'geocod':216 'includ':61 'infrastructur':70 'input':187 'key':90 'label':178 'learn':66 'limit':92 'list':201 'live':103 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':65 'mani':52 'map':225 'maxamountrequir':117 'mean':133 'metric':204 'micropayment API' 'network':86 'no-api-key' 'none':222 'offer':54 'one':50 'output':190 'page':156 'paramet':188 'path':230 'pay':2,17,136 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payabl':80 'payment':42,109,129 'per':3,18,78,140 'post':105 'post-method' 'precis':138 'premium':5,20,36,181 'price':75,153,212 'prompt':163 'prospect':231 'protocol':43 'provid':35,57 'rate':91,215 'readm':155 'render':158 'report':205 'request':79,106,141 'requir':95 'resourc':46 'return':197 'scheme':130 'second':145 'sentiment':206 'servic':195 'settl':108 'site':200 'span':59 'spars':149 'specif':45,169,242 'summar':209 'text':208 'timeout':142 'unclear':245 'unit':121 'usdc':15,30,82,111 'usdc-settlement' 'user':232 'util':71 'valid':217 'via':10,25,39 'wallet':162 'web3':68 'without':184 'x402':11,26,41,97 'x402 API' 'x402-payment'","prices":[{"id":"05d5b50d-9c5a-4f20-a932-105f339f0d99","listingId":"43425fe2-779c-4fcc-9cfc-3007e11ca1b7","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/charges/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":"2026-04-18T18:45:37.448Z"}],"sources":[{"listingId":"43425fe2-779c-4fcc-9cfc-3007e11ca1b7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/charges/70","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:45:37.448Z","lastSeenAt":"2026-04-23T21:32:04.360Z"}],"details":{"listingId":"43425fe2-779c-4fcc-9cfc-3007e11ca1b7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/charges/70 \\\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 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/charges/70"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/charges/70"},{"claim":"The provider lists endpoints for analytics, AI, finance, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a premium API endpoint without subscription or API key management","Agent-driven workflows that need on-demand, pay-as-you-go API calls settled in USDC on Base","Testing x402 payment protocol integrations with a low-cost live endpoint"],"bestFor":["Developers exploring x402 payment-gated APIs","AI agents that can settle USDC payments on Base per-call","Users who want zero-commitment, no-signup API access"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Anyone without a Base-compatible USDC wallet","High-volume use cases where $0.02/request adds up without bulk discounts"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:20.993Z"},"updatedAt":"2026-04-23T21:32:04.360Z"}}