{"id":"1bcf1d42-5ba7-4a35-a1de-690d65337eef","shortId":"NNnwAg","kind":"x402","title":"Check account balance via x402 micropayment on Base network for $0.02 per request.","tagline":"Check account balance via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns account balance information for a specific account (account ID 193) behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe endpoint accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers must include an X-PAYMENT header with a valid payment proof. The x402 challenge specifies an exact-scheme payment of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment is directed to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nThe platform advertises no API keys, no rate limits, and instant access. Documentation pages (/docs, /pricing, /api, /README) all appear to require a wallet connection and contain no substantive content in the crawl. As a result, the actual response schema, request parameters, and detailed behavior of this specific balance endpoint are unknown. The endpoint is confirmed live (402 challenge returned successfully).","tags":[],"capabilities":["x402-payment","usdc-base","account-balance","pay-per-call","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["account balance API","x402 balance check","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","crypto balance endpoint"],"warnings":["No documentation content available — all doc pages require wallet connection and returned no useful text","Request body schema and response schema are completely unknown","The specific purpose of 'account 193 balance' is unclear — it may be a demo or placeholder endpoint","Platform lists many endpoints but none have detailed docs in the crawl"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/193/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/193/balance","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, but there is no OpenAPI schema, no documented request/response format, and all documentation pages returned only a wallet-connect prompt with no content. The actual functionality of the balance endpoint is inferred solely from its URL path and the generic platform description.","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":"2026-04-19T01:45:13.845Z","embedding":[-0.02067566,-0.019302368,0.035125732,0.013427734,0.0077667236,-0.026657104,0.00040721893,0.024230957,0.076416016,-0.058135986,0.026153564,-0.04660034,-0.018478394,-0.014572144,-0.006286621,0.013969421,-0.009735107,0.019378662,-0.0519104,0.03729248,0.01651001,-0.018035889,-0.02003479,0.044708252,-0.008834839,-0.02003479,-0.013618469,-0.031463623,-0.030517578,-0.046691895,0.04083252,-0.019760132,-0.011703491,0.018371582,-0.0023345947,0.0020961761,0.0023345947,0.02166748,0.038146973,-0.020050049,-0.021392822,-0.048553467,0.015975952,0.013015747,-0.049987793,-0.005607605,0.024246216,-0.014480591,0.016479492,-0.0052452087,-0.05947876,0.011100769,0.0054855347,0.022079468,0.0057754517,0.02909851,0.020126343,-0.0119018555,0.01663208,0.030975342,0.0031108856,-0.051971436,-0.019760132,0.019348145,-0.0020103455,0.052703857,0.0033569336,0.033172607,0.0038471222,0.059539795,0.020858765,0.06347656,0.02798462,0.000036776066,-0.015197754,-0.025909424,0.031311035,0.01612854,-0.011154175,-0.036987305,0.008834839,-0.038970947,-0.08068848,-0.00017392635,-0.013595581,-0.04269409,-0.027191162,0.012016296,-0.024154663,0.05014038,-0.07556152,-0.016342163,0.0015764236,0.0039634705,0.020980835,-0.038360596,-0.033081055,0.01576233,0.0051231384,0.00096797943,0.010429382,-0.02859497,0.030349731,-0.015197754,0.033935547,0.045166016,0.02142334,0.019332886,-0.003238678,0.011962891,-0.032958984,0.004802704,0.0014362335,-0.021575928,0.027816772,0.022003174,-0.006904602,0.014060974,-0.03074646,0.016098022,-0.04119873,0.06274414,0.018188477,-0.00037837029,0.012649536,-0.058776855,-0.015655518,0.023544312,-0.040405273,0.010391235,0.037750244,0.020706177,0.014411926,-0.0056419373,-0.031066895,0.025726318,0.0006580353,-0.0368042,-0.015449524,-0.023040771,0.02720642,-0.020385742,0.016281128,0.0062408447,-0.082336426,-0.0027980804,-0.011222839,0.009284973,-0.008216858,-0.015411377,0.022216797,0.008811951,-0.010925293,-0.0037593842,-0.012763977,-0.015289307,0.0070228577,0.025375366,-0.0035648346,0.0357666,0.0070610046,0.017028809,0.016937256,-0.009124756,0.031021118,0.04940796,-0.028182983,-0.066589355,-0.083496094,-0.021011353,-0.0021572113,-0.022079468,-0.0093307495,-0.006916046,-0.023284912,-0.07318115,-0.0045433044,-0.017807007,-0.017196655,-0.03640747,-0.0062332153,-0.04067993,0.027511597,-0.017578125,-0.048828125,-0.010467529,-0.0009727478,0.056518555,0.03643799,0.02961731,0.007675171,-0.00041031837,0.028945923,0.030700684,-0.015686035,-0.01890564,0.020858765,-0.01914978,0.013931274,-0.001127243,0.0052108765,-0.020004272,0.030319214,0.06573486,-0.00548172,-0.021606445,0.016357422,-0.04348755,-0.050750732,-0.0055160522,0.0107040405,0.008392334,-0.002456665,0.0006303787,-0.04498291,0.003206253,0.011581421,0.027160645,0.0039749146,0.048828125,-0.010536194,0.017227173,0.031173706,0.024673462,-0.05166626,0.031829834,0.06542969,0.0413208,0.004814148,-0.022140503,0.03314209,0.00026750565,-0.024917603,0.03164673,0.008125305,0.035614014,-0.011459351,0.03050232,0.003944397,-0.009819031,-0.00868988,-0.010047913,0.0010967255,0.028121948,0.013893127,-0.013069153,-0.035980225,-0.08654785,0.046447754,0.03024292,0.018600464,-0.012298584,-0.013244629,-0.035491943,-0.024536133,-0.050872803,0.05368042,0.06781006,0.009674072,-0.02104187,0.028213501,-0.026062012,-0.054626465,-0.028747559,-0.011184692,-0.029190063,-0.0021781921,0.00034046173,-0.068603516,0.012054443,0.0054397583,0.031021118,0.051330566,-0.007965088,-0.037384033,-0.019546509,-0.011627197,0.013580322,-0.03955078,0.011329651,-0.018173218,0.018951416,0.0184021,-0.0014715195,0.013000488,-0.00011587143,-0.022079468,-0.017684937,0.023391724,0.0068969727,-0.028762817,0.024002075,0.0014247894,-0.03729248,0.006164551,-0.008056641,0.053863525,-0.047332764,0.03652954,-0.013504028,0.0107421875,0.06958008,-0.0056877136,-0.05392456,0.03881836,0.016677856,0.036590576,0.055633545,0.02128601,-0.020370483,-0.022369385,0.07324219,-0.014343262,0.005016327,0.036102295,0.015037537,0.030670166,-0.003025055,-0.056640625,-0.05267334,0.011734009,-0.021896362,0.02458191,-0.013465881,0.029647827,-0.008216858,0.031311035,-0.020462036,-0.0010442734,-0.042755127,-0.010353088,-0.0053710938,0.026687622,-0.03225708,-0.019958496,0.024963379,0.0078125,-0.016082764,-0.01651001,0.05682373,0.033050537,-0.02243042,-0.0040283203,-0.028915405,-0.022506714,-0.04638672,0.019378662,0.005832672,0.025909424,0.025863647,-0.014518738,0.0015993118,0.028411865,-0.022644043,0.03778076,0.013290405,-0.001124382,-0.06402588,-0.05227661,-0.024780273,-0.035980225,0.0098724365,0.03387451,-0.0060806274,0.08428955,0.004600525,-0.029571533,-0.0284729,0.024093628,-0.04916382,-0.00945282,0.03024292,-0.013595581,-0.023986816,-0.012229919,-0.0034236908,0.015388489,0.0385437,0.039367676,0.033996582,0.085632324,0.054138184,0.0129776,0.0025024414,0.023651123,0.03262329,0.0056037903,-0.0027236938,-0.032592773,-0.012756348,0.031280518,-0.031341553,-0.024459839,-0.07470703,0.054626465,0.03970337,0.07055664,0.020324707,0.007247925,0.01689148,-0.008529663,0.012084961,-0.048431396,-0.026428223,-0.028411865,-0.04837036,0.014572144,-0.01725769,0.008171082,-0.021484375,0.018463135,-0.0015916824,0.023254395,-0.035003662,0.057434082,-0.01600647,-0.014907837,0.031173706,0.034576416,0.025527954,0.036743164,-0.034576416,0.02420044,-0.0037708282,-0.032562256,-0.0096206665,0.041748047,0.012809753,-0.021713257,-0.06744385,-0.023498535,0.01826477,-0.013366699,-0.05316162,0.0005040169,-0.0026340485,0.034210205,0.013908386,-0.028137207,-0.020401001,-0.0018291473,-0.0084991455,-0.06793213,-0.006626129,0.0071525574,0.009376526,0.021057129,-0.032165527,0.021850586,-0.0071868896,0.023620605,-0.033203125,0.021270752,0.009490967,0.0073242188,-0.026916504,0.0345459,0.0015258789,0.010223389,0.0234375,0.05041504,0.018692017,0.043060303,0.047790527,0.016616821,0.011978149,-0.052520752,0.02305603,-0.06762695,0.007751465,0.041809082,-0.035339355,0.010345459,-0.010871887,-0.015113831,-0.030670166,0.0206604,-0.02305603,0.0006966591,0.023880005,-0.029342651,-0.057037354,-0.052856445,-0.021408081,0.0014877319,0.05230713,0.009094238,0.017456055,-0.046203613,-0.0055160522,0.023727417,0.012626648,0.017303467,-0.013130188,-0.016098022,-0.02949524,0.00023686886,0.0029335022,0.010154724,0.024642944,-0.0024738312,-0.006412506,0.008255005,0.025650024,0.008369446,-0.023544312,0.0024147034,0.0024414062,-0.021865845,0.0058135986,-0.0056762695,0.035949707,0.0015497208,-0.024597168,-0.048919678,0.030853271,0.0066833496,0.022857666,-0.03540039,-0.008918762,0.00082588196,0.014671326,0.0042304993,-0.014724731,0.012039185,-0.0032596588,-0.022857666,-0.083618164,0.034820557,-0.008972168,0.030044556,0.013542175,0.0007324219,0.017089844,-0.011306763,0.0088272095,0.010063171,-0.016845703,-0.0103302,-0.022018433,-0.007045746,-0.03314209,-0.010047913,-0.024139404,0.018508911,-0.013755798,0.01474762,0.005706787,-0.024337769,0.004016876,-0.0024547577,-0.0025787354,0.0044784546,0.0043144226,0.008758545,0.042053223,0.017730713,-0.05508423,0.03643799,0.0013618469,-0.0063476562,-0.0056915283,0.05130005,0.025161743,-0.007835388,-0.0016784668,-0.017242432,-0.008354187,-0.04119873,-0.0006875992,0.0054740906,0.024337769,-0.0004415512,-0.053710938,0.026000977,0.01966858,-0.03768921,-0.02003479,0.01763916,0.009811401,-0.042175293,0.023132324,0.021148682,0.04446411,-0.017303467,0.00035309792,-0.0059509277,0.027786255,0.02545166,0.017990112,0.0011415482,0.015449524,-0.021484375,0.03515625,0.0024852753,-0.018707275,-0.014007568,0.016571045,0.03074646,0.005558014,-0.008506775,0.005279541,-0.013755798,-0.008049011,0.016845703,-0.028167725,0.035736084,0.016311646,0.012954712,-0.0051116943,-0.008850098,0.042907715,-0.024597168,-0.00040125847,0.001408577,0.046661377,-0.0011978149,-0.009338379,0.037353516,0.014694214,0.025650024,-0.030517578,-0.008178711,-0.016952515,-0.0015459061,-0.04296875,-0.06750488,-0.013557434,0.0034713745,0.019073486,-0.008033752,0.008674622,0.013092041,0.00007736683,0.0008840561,0.0047950745,0.025802612,-0.013847351,-0.020736694,-0.05441284,-0.0017728806,-0.018203735,-0.0015707016,-0.028396606,0.007675171,-0.025375366,-0.0053215027,-0.0011892319,-0.01474762,0.004337311,0.002292633,-0.011703491,0.036712646,-0.018753052,0.005996704,-0.01878357,-0.033294678,-0.0065727234,0.015686035,0.019546509,-0.04953003,0.021072388,-0.0011463165,-0.0019664764,-0.0043182373,-0.00065755844,0.014160156,0.015258789,0.017028809,0.03164673,-0.03656006,0.020965576,-0.029449463,0.012268066,-0.021560669,-0.014518738,-0.0022716522,-0.015113831,-0.01637268,0.033813477,0.0079193115,-0.009536743,-0.024139404,-0.038726807,-0.006259918,-0.04095459,0.027908325,0.018600464,0.04675293,-0.033233643,-0.0012693405,0.00945282,0.025177002,-0.0028953552,-0.016326904,-0.0023002625,0.023742676,0.017913818,0.015686035,-0.02279663,-0.011444092,-0.026290894,0.0064315796,-0.0463562,-0.04626465,-0.015945435,0.013710022,0.018310547,-0.01991272,-0.025650024,-0.019348145,-0.006011963,-0.01259613,0.0019292831,-0.026153564,0.012489319,-0.0036144257,-0.014305115,0.0062217712,0.0022830963,-0.029190063,0.03778076,0.027130127,-0.015045166,-0.01940918,-0.016952515,0.011444092,0.009567261,0.0061302185,-0.037078857,-0.026306152,-0.023803711,-0.06677246,0.010925293,0.012229919,0.02508545,-0.02192688,-0.0031013489,-0.04586792,-0.0074920654,-0.024810791,-0.0019569397,0.0037994385,0.0042419434,0.0072669983,0.018966675,0.012992859,-0.01637268,-0.014846802,-0.009307861,0.0076560974,0.009307861,-0.0052223206,0.014732361,0.032928467,-0.0009851456,-0.024459839,0.008979797,0.0043754578,0.016830444,-0.028961182,-0.0025501251,-0.0016269684,0.006324768,-0.014266968,-0.0074539185,-0.026535034,-0.0018415451,0.076660156,0.0045776367,-0.016357422,-0.014831543,-0.0008788109,0.029190063,0.03567505,-0.0368042,0.003824234,-0.02960205,0.013916016,-0.024642944,0.016021729,0.008720398,0.033813477,-0.010505676,-0.035888672,-0.0021152496,0.034179688,-0.009239197,-0.074157715,-0.015151978,-0.08544922,-0.0015716553,-0.02319336,-0.016815186,0.0035743713,-0.0043029785,-0.025878906,-0.06329346,0.021743774,0.039398193,0.004650116,0.020339966,0.010437012,0.0028076172,0.017913818,-0.031219482,-0.015571594,0.009986877,-0.0234375,-0.02645874,-0.04638672,0.022720337,-0.015274048,-0.002872467,0.014083862,0.011405945,0.0029067993,-0.0058250427,0.012931824,-0.013847351,0.014671326,-0.018295288,-0.00020003319,-0.009506226,-0.0032787323,0.041168213,-0.064208984,0.02960205,0.010604858,0.012901306,0.0054855347,0.009666443,0.03643799,-0.041748047,-0.002538681,-0.009361267,0.010437012,0.025604248,-0.013465881,0.029693604,0.015945435,-0.0032196045,-0.0029773712,-0.028945923,-0.008293152,-0.036346436,-0.028182983,0.025238037,-0.006061554,0.012107849,-0.0104904175,-0.0070228577,0.009773254,0.0052948,0.012313843,0.0030918121,-0.00047254562,-0.015960693,0.018127441,-0.0036029816,0.021026611,-0.00982666,0.028884888,0.031143188,0.042663574,0.023590088,-0.00038266182,-0.005306244,0.026260376,-0.010437012,-0.001625061,0.024093628,0.014221191,0.000053346157,0.006587982,0.014732361,-0.035583496,-0.028869629,-0.015777588,-0.019882202,0.012542725,-0.03353882,-0.0064315796,-0.005756378,0.016296387,-0.015213013,-0.04006958,-0.0054473877,-0.021713257,-0.027908325,-0.01739502,-0.0005617142,0.02558899,0.008392334,-0.017807007,0.00075387955,0.0002720356,0.03665161,-0.006477356,-0.007171631,0.027114868,0.061035156,0.013420105,-0.0357666,-0.005542755,-0.007347107,-0.002696991,-0.005947113,-0.011138916,0.011489868,0.038146973,-0.020141602,0.023254395,-0.002817154,0.040283203,-0.013114929,0.0082092285,0.00856781,0.024139404,0.013145447,0.03112793,-0.038208008,0.010673523,-0.00013804436,-0.023605347,-0.010192871,-0.013427734,-0.019012451,0.0068206787,0.011749268,0.0050239563,0.02281189,0.018692017,0.017364502,-0.034973145,-0.0031280518,-0.004180908,-0.030929565,-0.027938843,0.008674622,-0.017822266,-0.007858276,0.010429382,-0.008911133,0.01474762,-0.017120361,0.03564453,-0.0022907257,0.009391785,-0.0071907043,-0.01977539,-0.019195557,-0.010185242,-0.02104187,0.008026123,-0.009719849,0.05126953,0.011940002,0.033966064,0.034729004,0.020233154,-0.0030670166,-0.028182983,-0.026153564,0.018341064,-0.005908966,0.008384705,-0.019210815,0.06536865,0.054870605,0.00078344345,0.027130127,0.030395508,0.048065186,0.0070152283,0.012550354,-0.00969696,0.025909424,-0.011993408,0.025405884,-0.011230469,0.03604126,-0.015045166,0.018692017,0.0047416687,0.011756897,-0.022583008,0.023071289,0.06951904,0.016479492,-0.015098572,0.033416748,-0.018188477,-0.028717041,0.0025615692,-0.03427124,0.04751587,0.01889038,0.03503418,0.041778564,0.017028809,-0.020553589,0.029449463,-0.0025482178,-0.026885986,0.05960083,0.016479492,-0.027038574,-0.021057129,-0.0025024414,0.020706177,-0.04638672,-0.033325195,0.029144287,-0.037506104,-0.0028324127,-0.0048065186,0.014511108,0.004310608,0.00044989586,0.022018433,0.027816772,-0.021911621,0.022033691,0.021850586,0.003824234,0.010269165,0.008621216,0.024414062,-0.021438599,-0.025009155,-0.004863739,0.024810791,0.013175964,-0.019515991,0.02961731,0.003276825,0.03604126,0.030303955,-0.019943237,0.026733398,0.034698486,0.004180908,-0.0061950684,0.0541687,0.020248413,0.027893066,0.029876709,0.031280518,0.029647827,-0.026931763,0.020080566,-0.0070610046,-0.0011711121,-0.01638794,0.010253906,0.02130127,-0.014762878,0.03378296,-0.008171082,0.011528015,-0.00022375584,0.025802612,-0.027435303,-0.0027160645,0.0004682541,0.0076675415,-0.01727295,-0.008476257,0.012413025,-0.03186035,0.01789856,0.022277832,0.024124146,-0.04611206,0.009231567,0.015571594,-0.026229858,-0.005344391,0.014320374,-0.043151855,-0.00014591217,0.0034675598,-0.019744873,-0.04916382,0.02406311,0.0019264221,-0.014183044,0.036102295,0.011146545,0.0037555695,0.0035705566,0.022445679,0.026931763,0.01727295,-0.0020275116,-0.005077362,0.0038928986,0.03945923,-0.007713318,-0.012687683,-0.032348633,-0.015289307,0.017623901,-0.00548172,-0.01701355,-0.0010929108,-0.021102905,-0.016921997,0.000061929226,0.032836914,0.011566162,0.037109375,-0.020019531,0.0016222,0.016830444,0.037872314,0.0031394958,-0.01864624,-0.026412964,0.0231781,-0.029541016,0.056518555,0.048217773,-0.012054443,0.024597168,0.017913818,-0.0317688,-0.016571045,-0.008430481,0.01197052,-0.030670166,0.0024662018,0.019760132,0.026535034,-0.01826477,-0.016677856,-0.0025787354,-0.01802063,-0.020721436,-0.005168915,0.008811951,0.010002136,0.038116455,0.0051116943,0.026153564,-0.021026611,0.05984497,0.0029907227,0.076538086,0.0029411316,-0.009994507,0.049346924,0.012123108,0.021408081,0.011184692,0.029220581,-0.02218628,0.012916565,0.008674622,0.013214111,0.017181396,0.022064209,-0.0077552795,0.03567505,-0.017089844,0.045043945,-0.013031006,-0.001868248,0.018951416,-0.008117676,-0.024017334,-0.0024795532,-0.015312195,0.0018920898,0.040527344,-0.007827759,-0.0011863708,-0.016601562,-0.0129776,0.018630981,-0.023223877,0.00037002563,-0.007881165,-0.008468628,0.021911621,-0.020889282,-0.009765625,0.009521484,0.011627197,-0.042388916,-0.0063705444,0.012451172,0.012619019,-0.024505615,0.0395813,0.049041748,0.012084961,-0.009361267,0.051605225,-0.004306793,0.018157959,0.00920105,0.04626465,0.044921875,0.017791748,-0.000289917,0.021072388,0.010658264,-0.011390686,0.025009155,0.042388916,-0.002008438,0.019378662,-0.008659363,-0.019470215,0.013557434,0.003540039,-0.023254395,-0.0012760162,-0.027893066,-0.023864746,-0.0062217712,0.0051651,-0.016296387,0.011558533,-0.0071983337,-0.0082092285,0.02520752,0.037078857,0.021377563,-0.039642334,-0.009414673,0.0029659271,0.0010976791,-0.012390137,-0.029525757,0.0066070557,-0.053619385,0.0037994385,0.013389587,0.0025806427,0.0016727448,-0.020736694,-0.012619019,0.0592041,0.015602112,0.005142212,0.0087509155,-0.0041618347,0.019699097,0.0019359589,0.008323669,-0.0010795593,-0.02128601,0.0007224083,0.037200928,-0.004776001,-0.017959595,0.018936157,0.016296387,0.01348114,-0.010688782,0.004989624,0.016220093,-0.007762909,-0.006839752,0.010299683,0.022277832,-0.031433105,-0.02746582,-0.0067977905,0.014060974,0.046539307,0.006916046,-0.01197052,-0.0119018555,0.043701172,0.02230835,0.036621094,0.005050659,0.047973633,0.012039185,-0.010795593,-0.022537231,0.015174866,0.0030269623,-0.00944519,0.013038635,-0.036468506,-0.015075684,-0.0029888153,0.030441284,-0.005622864,-0.013053894,0.003370285,-0.016113281,-0.022338867,0.026184082,-0.016555786,0.013717651,-0.039245605,-0.008956909,0.011871338,0.0036773682,-0.03286743,-0.017150879,-0.010360718,-0.020767212,-0.060699463,0.014320374,-0.022918701,0.006702423,-0.026687622,0.008491516,-0.017669678,0.0070228577,-0.008888245,-0.008483887,0.00021612644,0.0184021,0.026229858,-0.012557983,0.035980225,-0.01991272,-0.040283203,-0.00333786,-0.0065956116,0.0028858185,0.030975342,-0.016815186,0.046661377,0.022201538,-0.01121521,-0.00012409687,-0.0034332275,-0.007980347,0.0003452301,-0.031280518,-0.01979065,0.020401001,0.018829346,-0.0035934448,-0.011245728,0.03756714,-0.030715942,-0.026657104,0.026916504,0.04815674,-0.0024147034,0.05432129,-0.021209717,0.0002822876,-0.025512695,-0.0011463165,0.0007047653,0.0043907166,0.004436493,-0.0066719055,0.005607605,0.014442444,0.04244995,-0.020095825,-0.01902771,0.035736084,0.005847931,-0.011100769,0.029373169,0.022354126,-0.0029010773,-0.023605347,-0.010818481,-0.007663727,0.041870117,0.021713257,0.0027046204,-0.030303955,0.00969696,-0.007637024,-0.0025138855,0.031280518,-0.032348633,-0.0519104,-0.000099003315,-0.01737976,0.020217896,-0.006790161,0.01348114,-0.01776123,0.016067505,-0.022918701,-0.035125732,-0.006515503,0.025482178,0.025466919,-0.0076675415,-0.0022640228,-0.0007457733,-0.00034189224,-0.025238037,-0.0039520264,-0.04510498,-0.030166626,0.01008606,-0.013633728,0.021972656,0.017959595,-0.0052452087,0.0006952286,0.00067043304,0.0029029846,0.0099105835,0.025558472,-0.005973816,-0.0061569214,0.039398193,0.017807007,-0.0025787354,-0.0037403107,-0.017547607,0.0007109642,0.024261475,-0.00013685226,0.003736496,-0.02420044,0.011894226,0.0024166107,0.014320374,0.022750854,-0.026885986,0.022201538,-0.044555664,-0.015045166,0.01423645,-0.012008667,0.03201294,-0.008781433,-0.037384033,-0.017349243,-0.014167786,-0.028213501,0.014694214,0.006526947,0.037841797,-0.006942749,0.0395813,-0.03503418,-0.029800415,0.008216858,0.0008459091,-0.013053894,-0.010536194,0.015670776,0.011062622,0.02444458,0.00049495697,0.006210327,-0.027160645,-0.0030078888,0.0017194748,-0.010406494,-0.012954712,0.017700195,0.02078247,0.035125732,0.011116028,0.02178955,0.017730713,0.0061569214,0.035003662,0.0137786865,0.03878784,0.005317688,-0.0345459,0.021774292,0.0076179504,-0.024932861,0.006877899,-0.027557373,0.016479492,-0.033843994,-0.0012598038,-0.01550293,0.022537231,-0.008460999,0.014060974,-0.015510559,0.0032100677,-0.05215454,-0.021362305,-0.041168213,0.0024490356,0.009750366,0.0070533752,0.029312134,0.0013961792,-0.027908325,0.009269714,0.031066895,-0.006526947,-0.032470703,-0.022994995,0.0008401871,0.013496399,0.004043579,0.018051147,-0.035186768,-0.01713562,-0.013282776,-0.000562191,0.0069732666,-0.023529053,0.018249512,0.01826477,-0.013282776,-0.02696228,0.031463623,0.0059814453,0.0021419525,0.016784668,0.008201599,0.030578613,0.039031982,-0.015525818,0.03201294,0.01600647,-0.0385437,0.056427002,-0.005809784,0.026000977,-0.01687622,-0.020889282,-0.028686523,-0.028182983,-0.00024294853,0.007736206],"createdAt":"2026-04-18T18:41:37.943Z","updatedAt":"2026-04-27T18:07:21.638Z","lastSeenAt":"2026-04-27T18:07:21.638Z","tsv":"'/api':172 '/docs':170 '/pricing':171 '/readme':173 '0.02':11,24,75,138 '000':127 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':150 '0x8335':132 '193':41 '20':126 '2913':133 '300':153 '402':213 '6':142 'Base network API' 'USDC pay-per-call' 'accept':88 'access':167 'account':2,15,32,38,39 'account balance API' 'account-balance' 'actual':193 'address':149 'advertis':158 'ai/ml':65 'analyt':64 'api':60,160 'appear':175 'balanc':3,16,33,204 'base':8,21,84,128,135 'behavior':200 'behind':42 'broader':51 'call':59 'caller':101 'challeng':116,214 'check':1,14 'confirm':211 'connect':180 'contain':182 'content':185 'crawl':188 'crypto balance endpoint' 'data':63,68 'decim':143 'detail':199 'direct':147 'document':168 'dozen':54 'endpoint':28,61,87,205,209 'equal':137 'exact':120 'exact-schem':119 'finance/web3':67 'given':139 'handl':96 'header':108 'id':40 'includ':103 'infer':66 'inform':34 'instant':166 'json':93 'json-response' 'key':161 'limit':164 'live':212 'lowpaymentfee' 'lowpaymentfee.com':30 'micropay':6,19 'micropayment API' 'must':102 'network':9,22,85 'no-api-key' 'offer':53 'page':169 'paramet':197 'part':48 'pay':57 'pay-per-cal':56 'pay-per-call' 'payment':94,107,112,122,145 'paywal':45 'per':12,25,58,76 'platform':52,157 'post':89 'price':73 'proof':113 'protocol':100 'rate':163 'request':13,26,77,90,196 'requir':177 'respons':194 'result':191 'return':31,92,215 'schema':195 'scheme':121 'second':154 'servic':71 'settl':79 'span':62 'specif':37,203 'specifi':117 'substant':184 'success':216 'timeout':155 'unit':129 'unknown':207 'usdc':81,131,140 'usdc-base' 'util':70 'valid':111 'via':4,17,97 'wallet':179 'x':106 'x-payment':105 'x402':5,18,44,99,115 'x402 balance check' 'x402-payment'","prices":[{"id":"386201ab-17aa-495d-984e-54245c431215","listingId":"1bcf1d42-5ba7-4a35-a1de-690d65337eef","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/193/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":"2026-04-18T18:41:37.943Z"}],"sources":[{"listingId":"1bcf1d42-5ba7-4a35-a1de-690d65337eef","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/193/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:37.943Z","lastSeenAt":"2026-04-27T18:07:21.638Z"}],"details":{"listingId":"1bcf1d42-5ba7-4a35-a1de-690d65337eef","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/193/balance \\\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 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/193/balance"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/193/balance"}],"useCases":["Querying account balance data programmatically with per-call USDC micropayments","Integrating balance checks into automated agent workflows without API key management","Building dashboards that pull account balance information on demand"],"bestFor":["Agents or services that need on-demand account balance lookups with no subscription commitment","Developers wanting frictionless pay-per-call access without API key registration","Crypto-native workflows already operating on the Base network with USDC"],"notFor":["High-volume balance polling where $0.02 per request adds up quickly","Users who need detailed documentation or guaranteed SLAs before integrating","Applications requiring non-USDC or non-Base-network payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:32.628Z"},"updatedAt":"2026-04-27T18:07:21.638Z"}}