{"id":"c97a8a74-8171-4938-b1bd-7bac8bcac5fc","shortId":"GfWs5A","kind":"x402","title":"x402-gated account balance endpoint on Base, pay-per-call with USDC.","tagline":"x402-gated account balance endpoint on Base, pay-per-call with USDC.","description":"This endpoint at lowpaymentfee.com exposes an account balance resource at `/api/v1/accounts/114/balance`, gated behind the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum cost of $0.02 per request (20,000 base units at 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises a suite of pay-per-request APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 data (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments.\n\nHowever, the specific endpoint being listed here (`/api/v1/accounts/114/balance`) is not described on the provider's landing page among the advertised APIs. Its purpose appears to be retrieving the balance of account 114, but no documentation, request schema, or response schema is available. The docs, pricing, and API pages all returned only a \"Connect wallet\" prompt with no additional content. Without further documentation it is unclear what data this endpoint returns or what input parameters it expects beyond the POST method.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","account-balance","pay-per-request","json-response"],"categories":["finance","infrastructure"],"synonyms":["account balance API","x402 API","USDC pay-per-call","Base network API","lowpaymentfee","crypto payment API","micropayment API"],"warnings":["The endpoint /api/v1/accounts/114/balance is not listed among the provider's advertised APIs on the landing page","No documentation, request schema, or response schema is available for this endpoint","All doc/pricing/API pages returned only a 'Connect wallet' prompt with no useful content","The purpose and output of this specific endpoint are unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/114/balance","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/114/balance","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (returns 402 with a valid x402 challenge), but there is no documentation, no request/response schema, and the specific endpoint path is not listed among the provider's advertised APIs. Docs pages returned only 'Connect wallet' with no content. This is effectively a stub listing.","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":"2026-04-19T01:05:34.844Z","embedding":[-0.019622803,-0.0040512085,0.03704834,0.015235901,0.0035934448,-0.041259766,-0.020507812,0.014289856,0.08093262,-0.07312012,0.031433105,-0.058898926,-0.039855957,-0.03942871,0.0059814453,0.01826477,-0.022918701,0.02456665,-0.062438965,0.033294678,0.0054359436,-0.025436401,-0.00983429,0.029510498,-0.010383606,-0.031555176,-0.0054359436,-0.042999268,-0.03036499,-0.03262329,0.0435791,-0.021759033,0.0031108856,0.012626648,0.008491516,0.002664566,0.0030994415,0.02243042,0.036376953,-0.00687027,-0.027435303,-0.044891357,-0.0011768341,0.006351471,-0.02458191,0.0022354126,0.004573822,-0.022720337,0.0019702911,-0.017807007,-0.048675537,0.010101318,0.021072388,0.022079468,0.026229858,0.0287323,0.0039863586,-0.02104187,0.018630981,0.039733887,0.0005617142,-0.05999756,-0.007965088,0.00046801567,0.0076560974,0.055908203,0.0012493134,0.04309082,-0.015419006,0.056884766,0.021392822,0.056793213,0.029922485,0.0053634644,0.008636475,-0.025543213,0.022277832,0.032318115,-0.041931152,-0.04196167,-0.010070801,-0.02368164,-0.08013916,-0.015258789,-0.005207062,-0.050323486,-0.018920898,-0.0051460266,-0.028366089,0.044830322,-0.08728027,-0.017959595,0.016204834,0.034942627,0.017471313,-0.05117798,0.005657196,0.015274048,-0.000014781952,-0.0001667738,0.011741638,-0.025039673,0.029510498,-0.011779785,0.04824829,0.03845215,0.015167236,0.011108398,0.007820129,0.0032958984,-0.028411865,-0.010322571,-0.0056495667,-0.04046631,-0.003583908,0.014427185,-0.035095215,0.010650635,-0.026779175,0.007167816,-0.041137695,0.06951904,0.018447876,-0.0049934387,0.026382446,-0.05999756,-0.017242432,0.015960693,-0.031585693,0.0031833649,0.037994385,0.0036563873,0.0085372925,-0.025405884,-0.053863525,0.015533447,-0.017364502,-0.013298035,-0.030410767,-0.022201538,0.037994385,-0.007663727,0.024276733,0.00097084045,-0.10406494,-0.0018844604,-0.024475098,0.0024681091,-0.03149414,0.0025424957,0.0034866333,0.016357422,-0.009460449,-0.017669678,-0.009765625,-0.023040771,0.004764557,0.024902344,-0.0033016205,0.06365967,0.0058250427,0.022872925,0.04260254,0.008560181,0.01751709,0.03942871,-0.020721436,-0.0680542,-0.07556152,-0.02357483,-0.0118255615,-0.028305054,-0.031982422,0.008880615,-0.02558899,-0.064453125,-0.0067710876,-0.019515991,-0.01612854,-0.019226074,0.0015125275,-0.016540527,0.005832672,-0.01626587,-0.061676025,0.00022280216,-0.0013122559,0.072509766,0.03427124,0.023208618,0.0018978119,0.011291504,0.052459717,0.04373169,-0.013496399,-0.022537231,0.014854431,-0.0032596588,0.013999939,0.008171082,0.01777649,-0.027114868,0.033691406,0.028518677,-0.02420044,-0.016143799,0.020141602,-0.05731201,-0.03643799,-0.022247314,0.011787415,0.010253906,-0.01235199,0.01713562,-0.0385437,-0.0061912537,0.0053367615,0.028518677,-0.0006828308,0.0725708,0.004611969,0.029190063,0.011779785,0.02885437,-0.049194336,0.019042969,0.04916382,0.014221191,-0.015838623,-0.032043457,0.02217102,0.038909912,-0.01965332,0.0018911362,0.0059280396,0.016326904,-0.010818481,0.0011348724,0.032073975,-0.0059547424,0.0001154542,-0.014167786,-0.0021419525,0.00844574,0.0075263977,-0.0101623535,-0.03186035,-0.0836792,0.048553467,0.049438477,0.024536133,0.0042686462,-0.0046043396,-0.022598267,-0.036895752,-0.045776367,0.043060303,0.057037354,-0.007865906,-0.02670288,0.032226562,-0.014167786,-0.021255493,-0.011581421,-0.011871338,-0.029891968,-0.021270752,-0.015655518,-0.085510254,0.042785645,-0.00048589706,0.047302246,0.042388916,0.0019779205,-0.04156494,-0.007537842,0.005722046,-0.0063667297,-0.014572144,0.00982666,-0.019241333,0.0031967163,0.017486572,0.019088745,0.008155823,-0.001627922,-0.014595032,-0.005718231,0.0287323,0.017837524,-0.014587402,0.018035889,0.009284973,-0.0440979,0.018569946,0.013214111,0.05340576,-0.036193848,0.036987305,-0.008850098,0.007865906,0.048553467,-0.01626587,-0.038360596,0.023498535,-0.009124756,0.040771484,0.052001953,0.030593872,-0.0019817352,-0.005672455,0.045013428,-0.0149383545,-0.004714966,0.013832092,0.033477783,0.028137207,-0.013633728,-0.06640625,-0.02406311,0.003068924,-0.04006958,0.0146865845,-0.023651123,0.021606445,0.008651733,0.021484375,-0.015090942,-0.01689148,-0.035858154,0.0023078918,-0.02607727,0.016189575,-0.022338867,-0.016983032,0.02041626,0.017730713,0.008888245,-0.00642395,0.042938232,0.02645874,-0.029693604,0.0043563843,-0.025909424,-0.021896362,-0.019714355,0.03540039,0.0037136078,0.017486572,0.018066406,-0.026855469,0.009048462,0.031036377,-0.011329651,0.047027588,-0.0025787354,-0.0045928955,-0.054901123,-0.045898438,-0.017181396,-0.043273926,0.008262634,0.010856628,-0.010223389,0.05645752,-0.007144928,-0.016189575,-0.038848877,0.03237915,-0.045074463,0.015197754,0.016967773,-0.03451538,-0.026321411,-0.030441284,0.003353119,0.024749756,0.039794922,0.0017080307,0.017425537,0.08081055,0.03717041,0.011779785,-0.002494812,0.033569336,0.031951904,-0.0061035156,0.004562378,-0.027297974,-0.008613586,0.026550293,-0.013702393,-0.029403687,-0.07940674,0.050354004,0.00818634,0.07720947,0.0048828125,0.01084137,0.025909424,-0.020141602,0.025863647,-0.05871582,-0.03152466,-0.041229248,-0.030960083,0.015144348,-0.012580872,0.020385742,-0.044525146,0.02935791,0.003982544,0.014404297,-0.028259277,0.053649902,-0.017532349,-0.0041885376,0.02658081,0.017166138,0.03668213,0.05316162,-0.026992798,0.0055274963,0.01184082,-0.039398193,-0.0069084167,0.037750244,-0.004234314,-0.029708862,-0.06726074,-0.0071105957,0.022125244,-0.012619019,-0.07312012,0.00031661987,0.013648987,0.02267456,0.019989014,-0.019866943,-0.02027893,-0.0016222,-0.00944519,-0.08312988,0.0005912781,-0.02142334,0.0064926147,0.02734375,-0.023605347,0.02180481,0.010269165,0.013465881,-0.016983032,0.02178955,0.009284973,-0.007835388,-0.0121536255,0.03552246,0.01676941,0.029510498,0.009902954,0.062805176,0.025268555,0.015037537,0.04714966,0.02545166,-0.013038635,-0.052642822,0.017105103,-0.07446289,0.022064209,0.028030396,-0.047821045,0.008583069,0.012527466,-0.035491943,-0.009567261,0.011528015,-0.032440186,0.016220093,0.020828247,-0.035614014,-0.028305054,-0.045959473,-0.024520874,0.011299133,0.068847656,0.00687027,0.016540527,-0.03253174,-0.018600464,0.035888672,0.013015747,0.01449585,-0.01436615,-0.03250122,-0.0413208,-0.017089844,-0.042297363,-0.010185242,0.017562866,0.0061531067,-0.009773254,0.010009766,-0.0015649796,0.007259369,0.0018863678,0.0055274963,0.010375977,-0.039398193,0.014778137,0.00039696693,0.035461426,-0.021362305,-0.047851562,-0.05090332,0.040100098,0.0027103424,0.0256958,-0.02885437,-0.005718231,0.00093507767,0.019973755,0.006427765,-0.025604248,-0.0055618286,0.010131836,-0.024093628,-0.059631348,0.040222168,-0.014457703,0.022491455,0.009231567,-0.013999939,0.037139893,0.008880615,0.017807007,0.016540527,-0.024810791,-0.00705719,-0.026504517,-0.013519287,-0.027297974,0.0040359497,-0.0030612946,0.021209717,-0.01084137,0.023910522,-0.0047187805,-0.02015686,0.03869629,0.007297516,0.012321472,0.029541016,-0.0056381226,-0.0016803741,0.049468994,0.02558899,-0.062194824,0.046081543,-0.0035552979,0.004447937,-0.01108551,0.051696777,0.024658203,-0.020935059,0.005306244,-0.022125244,0.005168915,-0.01737976,-0.016464233,0.0027637482,0.04498291,0.019226074,-0.047332764,0.018844604,0.02331543,-0.037017822,-0.022323608,0.023788452,0.012969971,-0.05126953,0.0074691772,0.0066833496,0.032562256,-0.043518066,0.011146545,0.0075645447,0.043762207,0.020935059,0.0024757385,0.0050849915,0.017669678,-0.03378296,0.016860962,0.010116577,-0.012969971,-0.021636963,-0.000019609928,0.034729004,0.011077881,0.0039978027,0.003074646,-0.014076233,-0.0026798248,0.0042762756,-0.009231567,0.031921387,0.01322937,0.013832092,-0.0041885376,0.001572609,0.043395996,-0.032440186,-0.008384705,0.013572693,0.033172607,-0.009498596,-0.020492554,0.035369873,0.00687027,0.041137695,-0.035339355,-0.009994507,-0.006576538,0.011383057,-0.011650085,-0.061553955,-0.022598267,-0.015052795,0.030395508,-0.018951416,0.0055389404,0.029800415,-0.004257202,-0.0058288574,0.005973816,0.027526855,-0.009307861,-0.008056641,-0.05783081,-0.011917114,-0.017623901,-0.010368347,-0.040649414,0.021652222,-0.03353882,-0.030960083,0.00818634,-0.02217102,0.010597229,-0.00054359436,-0.018127441,0.028411865,-0.01184082,0.017654419,0.00012946129,-0.028411865,-0.016174316,0.005153656,0.018096924,-0.061462402,0.02168274,-0.013519287,-0.002161026,-0.012161255,0.00043988228,0.017074585,0.010482788,0.021774292,0.047973633,-0.05593872,0.03286743,-0.033569336,0.0011110306,-0.013755798,-0.012802124,-0.0068969727,-0.023834229,-0.015945435,0.039611816,0.00016772747,-0.013221741,-0.015731812,-0.033569336,-0.015144348,-0.04736328,0.034606934,0.016677856,0.049316406,-0.025634766,0.0033607483,0.023132324,0.023895264,0.002122879,-0.02218628,0.0009756088,0.010627747,0.01638794,0.007423401,-0.03552246,-0.039123535,-0.013847351,0.0023097992,-0.038909912,-0.04727173,-0.0037117004,0.023635864,0.015403748,-0.023330688,-0.023544312,-0.014419556,-0.011924744,-0.018630981,0.011657715,-0.010887146,0.021728516,0.00054597855,-0.006225586,0.021636963,-0.003736496,-0.029876709,0.04135132,0.017852783,-0.014274597,-0.008460999,0.0012865067,0.0128479,-0.005958557,0.010513306,-0.022109985,-0.02470398,-0.016494751,-0.052734375,0.018310547,-0.007572174,0.008255005,-0.014480591,-0.010688782,-0.04067993,-0.012565613,-0.014183044,-0.007873535,0.0072784424,0.01852417,0.008979797,-0.0016546249,0.0014848709,-0.0067596436,-0.017227173,-0.020889282,0.004676819,0.010360718,-0.005760193,0.019088745,0.03656006,-0.0010099411,-0.016937256,-0.0029792786,0.009086609,0.00945282,-0.026779175,0.013427734,0.008087158,0.016464233,-0.013031006,-0.01134491,-0.03677368,0.0021591187,0.06100464,-0.018722534,-0.0053863525,-0.020614624,0.0079574585,0.01789856,0.033935547,-0.032409668,0.016799927,-0.033447266,0.012435913,-0.026672363,0.03692627,-0.0005106926,0.022735596,-0.025299072,-0.032043457,0.004737854,0.034088135,-0.010719299,-0.07183838,-0.01133728,-0.0769043,-0.012825012,-0.01436615,-0.029708862,0.009857178,0.0075645447,-0.022949219,-0.0725708,0.007385254,0.041748047,0.005722046,0.0115356445,0.009803772,0.01789856,0.028411865,-0.013008118,-0.0309906,0.021621704,-0.022567749,-0.0052757263,-0.015716553,0.026733398,-0.015106201,-0.020645142,0.013999939,-0.007507324,0.021011353,-0.009765625,0.011260986,-0.015274048,-0.0024852753,-0.011047363,-0.0047912598,-0.008155823,-0.008972168,0.049560547,-0.05126953,0.03768921,0.0030975342,0.0146865845,0.01234436,0.008430481,0.029403687,-0.04135132,0.0048942566,0.0064468384,0.007675171,0.03491211,-0.023803711,0.04031372,0.01977539,-0.009933472,0.008956909,-0.012496948,0.014312744,-0.05090332,-0.016860962,0.031555176,-0.0090789795,0.009864807,-0.030807495,-0.005004883,0.012588501,-0.012992859,-0.0061531067,-0.012138367,-0.002456665,-0.024276733,0.015731812,-0.017196655,0.03543091,-0.010322571,0.01687622,0.025543213,0.03363037,0.0031051636,0.007648468,0.006877899,0.023620605,-0.017868042,0.0016489029,0.010856628,0.020309448,0.0060920715,0.022598267,0.017700195,-0.029251099,-0.025741577,0.00086927414,-0.015670776,0.010025024,-0.025680542,0.027435303,0.0005760193,0.014335632,-0.017868042,-0.02885437,-0.010879517,-0.010437012,-0.019424438,-0.012969971,0.010108948,0.016357422,0.011314392,-0.001578331,0.017837524,-0.0064201355,0.04324341,-0.010421753,-0.017089844,0.015472412,0.04248047,0.009986877,-0.022155762,-0.0013427734,-0.0062332153,-0.001543045,0.010070801,-0.015899658,0.024093628,0.026000977,-0.0058288574,0.029510498,-0.00434494,0.041778564,-0.00705719,0.02078247,0.0063285828,0.00674057,0.021057129,0.04574585,-0.035614014,0.013412476,0.015258789,-0.014053345,0.0014400482,-0.016311646,-0.016723633,0.01600647,0.012138367,-0.018829346,0.030685425,0.018066406,0.011405945,-0.03289795,-0.0041770935,0.005630493,-0.03366089,-0.01939392,0.0051727295,-0.0053863525,-0.006706238,0.015930176,-0.01864624,0.009513855,-0.019332886,0.016723633,-0.0019626617,0.014129639,-0.02015686,-0.031173706,-0.004886627,-0.008956909,-0.023651123,0.0070266724,-0.0008530617,0.043640137,0.016906738,0.023834229,0.023666382,0.023391724,0.0056610107,-0.040649414,-0.012420654,0.004497528,-0.006122589,0.010879517,-0.043182373,0.034118652,0.072143555,0.0053634644,0.02053833,0.0289917,0.028915405,-0.0062942505,0.011047363,-0.011886597,0.014205933,-0.024108887,0.02104187,0.0017290115,0.02947998,-0.0069999695,0.016433716,-0.008003235,0.038360596,-0.0435791,0.017791748,0.07598877,0.014846802,-0.0075912476,0.020721436,-0.012039185,-0.016937256,-0.012420654,-0.030471802,0.046325684,0.0049476624,0.034118652,0.033935547,0.007423401,-0.02619934,0.026443481,-0.009109497,-0.01637268,0.059417725,0.0029335022,-0.013572693,-0.011505127,-0.028213501,0.018753052,-0.04171753,-0.026809692,0.02357483,-0.014205933,0.009506226,-0.011024475,0.0032043457,0.006137848,0.0127334595,-0.0020961761,0.017684937,-0.023498535,-0.002626419,0.011329651,0.012687683,0.009223938,0.005554199,0.041168213,-0.023040771,-0.019134521,-0.0016412735,0.01576233,0.018356323,-0.016525269,0.038635254,0.009681702,0.034576416,0.038848877,-0.013664246,0.011566162,0.026992798,-0.0034713745,-0.005065918,0.04901123,0.019485474,0.026885986,0.037597656,0.041168213,0.03479004,-0.010635376,0.03527832,-0.0075798035,-0.003440857,-0.01713562,0.010116577,0.012336731,-0.008850098,0.027374268,0.00004506111,-0.010040283,0.014961243,0.046203613,-0.013214111,-0.0062675476,0.0030956268,-0.00093126297,0.0011482239,0.0002834797,0.017593384,-0.023254395,0.0038223267,0.028076172,0.024215698,-0.039367676,0.014465332,0.0013074875,-0.020584106,-0.012916565,0.019485474,-0.043029785,0.021835327,0.0015888214,-0.01638794,-0.03591919,0.024139404,0.0025234222,-0.0044441223,0.022964478,0.011161804,0.00054073334,0.009651184,0.008834839,0.021911621,0.009407043,-0.00068187714,-0.0056495667,0.013496399,0.032226562,-0.021331787,-0.0040626526,-0.032226562,0.007987976,0.02142334,-0.0085372925,-0.026565552,0.009239197,-0.003917694,-0.012123108,-0.004863739,0.02909851,0.008666992,0.040008545,-0.008399963,-0.007904053,-0.006122589,0.034973145,0.01398468,-0.022827148,-0.02154541,0.012046814,-0.013580322,0.04232788,0.049804688,-0.01033783,-0.0004107952,-0.000300169,-0.010108948,-0.0025577545,-0.020385742,0.016204834,-0.030807495,0.017227173,0.004600525,0.015670776,-0.038726807,-0.021743774,-0.00047397614,-0.034240723,-0.024383545,-0.021697998,-0.00017309189,0.0014791489,0.02279663,0.012702942,0.030807495,-0.007221222,0.064819336,-0.016357422,0.068603516,0.0023860931,-0.005393982,0.04425049,0.033996582,0.020492554,0.002714157,0.030212402,-0.027709961,-0.0048561096,0.026992798,0.009437561,0.007461548,0.0010681152,-0.005256653,0.03692627,-0.034332275,0.02758789,-0.015274048,-0.011398315,0.012527466,-0.016983032,-0.029891968,0.0025081635,-0.0024604797,0.0048179626,0.030319214,-0.0060310364,0.00041484833,-0.0073890686,-0.015686035,0.02217102,-0.015090942,0.0115737915,-0.005443573,-0.012069702,0.024459839,-0.019699097,-0.017562866,-0.004383087,0.018203735,-0.032287598,-0.012718201,0.0077667236,0.01838684,-0.02067566,0.036132812,0.034301758,-0.006023407,-0.0022335052,0.04397583,-0.0036468506,0.02885437,-0.00066041946,0.054901123,0.044158936,0.017425537,-0.0047073364,0.026138306,0.016113281,-0.011077881,0.01499176,0.06124878,0.0040626526,0.017654419,-0.0033512115,-0.0024490356,0.004398346,-0.01210022,-0.011413574,-0.008888245,-0.022277832,-0.018417358,-0.010772705,0.010116577,-0.008720398,0.00907135,-0.012046814,-0.0158844,0.00920105,0.038024902,0.024093628,-0.048614502,-0.009140015,0.011421204,0.013572693,-0.018875122,-0.028076172,-0.005050659,-0.04232788,0.0027618408,0.02658081,0.004901886,0.00818634,-0.019439697,0.0025253296,0.05041504,0.013534546,0.009635925,0.019088745,-0.019821167,0.026901245,0.0020217896,0.006263733,-0.004081726,-0.020599365,-0.0013160706,0.029815674,-0.007835388,-0.015014648,0.016723633,-0.00049591064,0.013633728,0.006023407,0.021957397,0.021911621,-0.020614624,-0.0039405823,0.016555786,0.017623901,-0.025222778,-0.048065186,-0.01309967,0.026550293,0.05178833,-0.016784668,-0.003982544,-0.012519836,0.030761719,0.035217285,0.046081543,0.0138168335,0.049346924,0.0104599,0.0064582825,-0.022262573,0.012382507,0.001250267,-0.01071167,0.015853882,-0.022521973,-0.012451172,-0.00088739395,0.026672363,0.010131836,-0.0070724487,-0.007472992,-0.01235199,-0.009162903,0.022613525,-0.030853271,0.029190063,-0.026931763,-0.009788513,0.016311646,0.0030574799,-0.023880005,-0.04284668,-0.019622803,-0.0031337738,-0.07696533,0.010284424,-0.020858765,-0.0050315857,-0.035614014,0.004852295,-0.017868042,0.024108887,-0.0023918152,-0.0028095245,-0.002111435,0.030151367,0.007293701,0.009239197,0.026641846,-0.018875122,-0.02633667,0.0056648254,-0.0047912598,-0.00028896332,0.01486969,-0.029403687,0.03994751,0.0070533752,-0.0082473755,0.00004374981,-0.0124435425,-0.020812988,0.007671356,-0.04260254,-0.019088745,0.00037765503,0.02470398,-0.001534462,0.002313614,0.039001465,-0.016784668,-0.01449585,0.038024902,0.05834961,-0.0071487427,0.059020996,-0.025146484,-0.0033664703,-0.0335083,-0.0118637085,-0.006095886,0.018157959,0.006778717,0.021438599,0.01020813,0.035583496,0.018218994,-0.014625549,-0.023223877,0.033569336,0.022262573,-0.0059661865,0.038330078,0.014587402,0.00023210049,-0.023422241,-0.009689331,0.011436462,0.040863037,0.019805908,0.017868042,-0.010116577,0.011421204,-0.013008118,0.011871338,0.021636963,-0.03164673,-0.04321289,-0.004837036,-0.015701294,0.011878967,-0.011680603,0.021316528,-0.0058135986,0.010620117,-0.026626587,-0.027709961,-0.02748108,0.01940918,0.013069153,-0.0024700165,-0.007610321,0.0011062622,-0.0022583008,-0.032165527,-0.007293701,-0.047729492,-0.023239136,0.006881714,-0.020202637,0.021194458,0.0025749207,-0.003227234,0.00617218,0.004688263,-0.0029640198,-0.00043344498,0.020141602,-0.0051994324,-0.0014028549,0.034240723,0.016464233,-0.0016336441,-0.0010662079,-0.0001733303,0.0007119179,0.03164673,-0.0027599335,0.0067253113,-0.00491333,0.019866943,0.020690918,0.004825592,0.033416748,-0.014549255,0.031219482,-0.037353516,-0.009155273,0.0025691986,-0.017593384,0.040527344,-0.011024475,-0.021911621,-0.011787415,-0.010734558,-0.030136108,0.0115737915,0.016433716,0.036621094,-0.020736694,0.053497314,-0.017547607,-0.023132324,0.0049552917,0.020904541,-0.014328003,-0.010063171,0.008674622,0.0050582886,0.032043457,0.0034179688,0.0045280457,-0.030319214,-0.016189575,-0.005180359,-0.0059547424,-0.0060310364,-0.015403748,0.017318726,0.0368042,0.01449585,0.007858276,0.027770996,0.0028476715,0.03265381,0.009857178,0.045196533,0.02319336,-0.012397766,0.007835388,0.0016050339,-0.013214111,-0.0048217773,-0.008094788,0.0047950745,-0.03152466,-0.00085639954,-0.009643555,0.035583496,-0.00793457,0.015670776,-0.010848999,-0.020187378,-0.050201416,-0.015312195,-0.04107666,0.0066452026,0.01348114,0.0013828278,0.01525116,0.014038086,-0.02267456,0.00466156,0.021697998,-0.0021343231,-0.045532227,-0.02154541,0.0035095215,0.010444641,0.011062622,0.012107849,-0.03942871,-0.020812988,0.003917694,0.0066947937,0.00087594986,-0.022018433,0.02394104,0.023910522,-0.007572174,-0.025360107,0.017913818,0.005256653,-0.0031394958,0.011924744,0.002506256,0.041290283,0.040283203,0.003665924,0.022506714,0.020233154,-0.02432251,0.054595947,-0.003900528,0.029632568,-0.019088745,-0.020553589,-0.029891968,-0.016143799,0.019744873,-0.00065374374],"createdAt":"2026-04-18T18:40:45.548Z","updatedAt":"2026-04-27T22:32:47.595Z","lastSeenAt":"2026-04-27T22:32:47.595Z","tsv":"'/api/v1/accounts/114/balance':39,145 '0.02':69,124 '000':73 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':63 '114':169 '20':72 '6':77 'Base network API' 'USDC pay-per-call' 'accept':47 'account':4,18,35,168 'account balance API' 'account-balance' 'addit':195 'advertis':83,157 'ai/ml':95 'among':155 'analysi':98 'analyt':94 'api':91,129,158,184 'appear':161 'avail':179 'balanc':5,19,36,166 'base':8,22,58,74 'base-network' 'behind':41 'beyond':214 'broader':80 'call':12,26 'classif':100 'commit':137 'connect':190 'content':196 'contract':62 'convers':117 'cost':67 'crypto payment API' 'data':93,103,204 'decim':78 'describ':148 'doc':181 'document':172,199 'embed':101 'endpoint':6,20,30,120,141,206 'estim':111 'exchang':106 'expect':213 'expos':33 'feed':105 'finance/web3':102 'gas':110 'gate':3,17,40 'generat':118 'geocod':115 'howev':138 'infer':96 'infrastructur':113 'input':210 'json':52 'json-response' 'key':130 'land':153 'limit':133 'list':122,143 'lowpaymentfee' 'lowpaymentfee.com':32,81 'maximum':66 'method':217 'micropayment API' 'minimum':136 'network':59 'page':154,185 'paramet':211 'pay':10,24,88 'pay-per-cal':9,23 'pay-per-request':87 'payment':44,53 'per':11,25,70,89,125 'platform':82 'post':48,216 'price':104,182 'prompt':192 'protocol':45 'provid':151 'purpos':160 'quot':109 'rate':107,132 'request':49,71,90,126,173 'resourc':37 'respons':176 'retriev':164 'return':51,187,207 'schema':174,177 'sentiment':97 'settl':55 'span':92 'specif':140 'suit':85 'summar':99 'token':108 'unclear':202 'unit':75 'usdc':14,28,61 'usdc-settlement' 'use':60 'util':114 'valid':116 'wallet':191 'without':197 'x402':2,16,43 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"d2f1a12f-f6e9-40f3-94e9-1c47a762745b","listingId":"c97a8a74-8171-4938-b1bd-7bac8bcac5fc","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/114/balance","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:45.548Z"}],"sources":[{"listingId":"c97a8a74-8171-4938-b1bd-7bac8bcac5fc","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/114/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:45.548Z","lastSeenAt":"2026-04-27T22:32:47.595Z"}],"details":{"listingId":"c97a8a74-8171-4938-b1bd-7bac8bcac5fc","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/114/balance \\\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 x402 challenge specifies USDC on Base with maxAmountRequired of 20000 (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/accounts/114/balance"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/114/balance"}],"useCases":["Querying account balance data via a single pay-per-call request","Integrating x402-compatible payment flows into agent workflows","Demonstrating x402 protocol usage on Base with USDC"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need pay-per-call access without API key management","Low-volume, on-demand balance lookups"],"notFor":["Production workloads requiring documented and stable API contracts","Users who need detailed API documentation or response schemas before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:35.203Z"},"updatedAt":"2026-04-27T22:32:47.595Z"}}