{"id":"ac8cbe1b-c80f-4882-a80d-cc31984ff601","shortId":"sHk58n","kind":"x402","title":"x402-gated account balance endpoint on Base, paid per-call in USDC.","tagline":"x402-gated account balance endpoint on Base, paid per-call in USDC.","description":"This endpoint at lowpaymentfee.com provides a \"Premium API Access\" resource at the path `/api/v1/accounts/113/balance`. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated via the x402 payment protocol on the Base network.\n\nThe specific endpoint probed returns an x402 challenge requesting payment in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base) with a `maxAmountRequired` of 20,000 base units. Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the platform's advertised flat pricing of $0.02/request across all endpoints. Payment is made via the `exact` scheme, and the endpoint accepts POST requests. No API keys or rate limits are advertised; access is granted purely through x402 payment headers.\n\nThe platform's landing page lists additional endpoint categories including sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, and more — all at the same $0.02 price point. However, the specific functionality of the `/api/v1/accounts/113/balance` endpoint is not well-documented beyond the generic \"Premium API Access\" label. No OpenAPI schema, detailed docs, or example responses were found in the crawl. The docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-call","account-balance","json-response"],"categories":["finance","infrastructure"],"synonyms":["account balance API","x402 API","USDC micropayment API","Base network API","pay-per-request API","lowpaymentfee","crypto payment API"],"warnings":["No documentation available — docs, pricing, and README pages return only 'Connect wallet' with no content","The specific functionality of /api/v1/accounts/113/balance is undocumented; 'Premium API Access' is a generic label","No OpenAPI spec or response schema provided","No example responses available to verify what data is actually returned"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/113/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/113/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 and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no example requests or responses, and the specific purpose of the /accounts/113/balance path is unclear. The docs/pricing/README pages are all empty beyond a wallet-connect prompt.","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":"2026-04-19T01:04:57.100Z","embedding":[-0.0023479462,-0.0025615692,0.05899048,0.018829346,0.007972717,-0.03866577,-0.0026226044,0.025726318,0.07104492,-0.06951904,0.037139893,-0.058441162,-0.03527832,-0.041900635,0.001578331,0.022827148,-0.022216797,0.014228821,-0.07104492,0.040130615,0.002506256,-0.022628784,-0.006843567,0.049865723,-0.010848999,-0.04449463,-0.0116119385,-0.030929565,-0.028686523,-0.033325195,0.034423828,-0.021743774,-0.007522583,0.01878357,-0.0032081604,0.0007753372,-0.0023288727,0.030014038,0.0385437,-0.018859863,-0.00818634,-0.055419922,-0.0046577454,0.0065307617,-0.03414917,-0.007499695,0.00484848,-0.01991272,-0.002702713,0.011238098,-0.0435791,0.013313293,0.013214111,0.0012655258,0.010681152,0.025268555,-0.010955811,-0.014305115,0.017410278,0.0059814453,-0.004058838,-0.06088257,-0.021911621,-0.009422302,0.015182495,0.05279541,0.0015201569,0.04159546,-0.0026073456,0.054351807,0.03062439,0.06896973,0.04071045,0.004486084,0.0007224083,-0.028411865,0.0023441315,0.028015137,-0.026428223,-0.036071777,-0.0077438354,-0.031051636,-0.07598877,0.00018024445,-0.0010852814,-0.045318604,-0.011276245,0.013587952,-0.03817749,0.049316406,-0.07952881,-0.018875122,0.010070801,0.025177002,0.0076065063,-0.02961731,-0.018859863,0.016296387,-0.012359619,0.0024204254,0.0074501038,-0.023208618,0.031311035,-0.015434265,0.052459717,0.044769287,0.025115967,0.008422852,-0.009117126,-0.0038833618,-0.013473511,0.008903503,0.0023422241,-0.032592773,0.014343262,0.014015198,-0.02961731,0.029647827,-0.027801514,0.015182495,-0.029663086,0.058135986,0.007724762,-0.01651001,0.014709473,-0.057434082,-0.011833191,0.01928711,-0.040802002,0.0055885315,0.013717651,0.010673523,0.014320374,-0.026901245,-0.03024292,0.006252289,-0.021408081,-0.012786865,-0.033294678,-0.014694214,0.028945923,-0.012413025,0.037994385,0.013465881,-0.0970459,-0.016616821,-0.034301758,0.027236938,-0.03881836,0.00390625,-0.0046577454,0.017425537,-0.011230469,-0.01322937,-0.012786865,-0.029464722,-0.005947113,0.028915405,0.0071144104,0.053466797,0.00843811,0.022140503,0.031143188,0.0021533966,0.02923584,0.041412354,-0.018035889,-0.06384277,-0.07885742,-0.024765015,-0.008041382,-0.039154053,-0.02809143,-0.0030708313,-0.0072364807,-0.07910156,-0.016784668,0.00032639503,-0.02708435,-0.02130127,0.0038776398,-0.039916992,0.004737854,-0.018173218,-0.05380249,-0.01335144,-0.004219055,0.066711426,0.02420044,0.017303467,0.023391724,-0.0033035278,0.048980713,0.025512695,-0.026809692,-0.02458191,0.02116394,-0.0032100677,0.012939453,0.0005297661,0.014183044,-0.010917664,0.02458191,0.047088623,-0.020980835,-0.011833191,0.0096588135,-0.04663086,-0.04849243,-0.027679443,0.016342163,0.0029010773,-0.0093688965,0.0053710938,-0.0385437,-0.014633179,-0.009216309,0.027557373,-0.000890255,0.06555176,0.0104904175,0.008201599,0.011917114,0.017120361,-0.054351807,0.026809692,0.057739258,0.022598267,-0.013336182,-0.029647827,0.023254395,0.005832672,-0.015350342,0.012573242,-0.00667572,0.032958984,0.015174866,0.00957489,0.026046753,-0.01461792,-0.01449585,-0.018249512,0.015777588,0.027435303,0.0115356445,-0.01109314,-0.035339355,-0.08557129,0.04840088,0.08154297,0.018859863,-0.0057411194,0.009162903,-0.025878906,-0.04498291,-0.06903076,0.050201416,0.07763672,0.0003156662,-0.035736084,0.026657104,-0.010879517,-0.03451538,-0.020446777,-0.009239197,-0.017120361,-0.020843506,-0.004310608,-0.06713867,0.01940918,0.0056762695,0.035186768,0.03829956,-0.001329422,-0.052856445,-0.02861023,0.011444092,0.011108398,-0.024658203,-0.0049972534,-0.0068588257,0.031677246,0.031433105,0.007472992,0.0129776,-0.02029419,-0.01512146,-0.0076789856,0.025665283,-0.0073928833,-0.024215698,0.01687622,0.0012197495,-0.057891846,0.021987915,0.009773254,0.037628174,-0.032409668,0.0335083,-0.0027809143,-0.010681152,0.056884766,0.0002872944,-0.050476074,0.024108887,-0.011375427,0.04949951,0.054473877,0.011566162,-0.008369446,-0.0012454987,0.072509766,-0.004776001,0.003458023,0.023208618,0.022781372,0.027236938,-0.00274086,-0.072509766,-0.035125732,0.0040130615,-0.016723633,0.023544312,-0.021728516,0.018508911,0.006286621,0.025680542,-0.015533447,-0.012084961,-0.039916992,-0.0004749298,-0.008049011,0.00868988,-0.022232056,-0.0042648315,0.020126343,0.022354126,0.0031814575,-0.009971619,0.045288086,0.023101807,-0.02420044,-0.0071105957,-0.039611816,-0.01499939,-0.018066406,0.030975342,0.004924774,0.009109497,0.029190063,-0.036590576,-0.00096178055,0.021362305,0.0025119781,0.054260254,-0.004096985,-0.0046463013,-0.058166504,-0.050109863,-0.027908325,-0.034210205,0.011657715,0.025497437,0.0003554821,0.0602417,-0.0005507469,-0.025146484,-0.030151367,0.038757324,-0.040283203,0.012336731,0.031433105,-0.029418945,-0.02822876,-0.0022792816,0.012245178,0.01651001,0.031433105,0.005493164,0.009140015,0.085632324,0.051757812,0.0009822845,0.019073486,0.03543091,0.02532959,-0.0011024475,-0.0076179504,-0.021987915,-0.016738892,0.029769897,-0.022766113,-0.021316528,-0.080078125,0.059448242,0.017654419,0.0814209,0.022140503,0.011367798,0.030670166,-0.0076942444,0.016921997,-0.045715332,-0.037139893,-0.03729248,-0.045959473,0.019088745,-0.007007599,0.017791748,-0.03878784,0.042541504,0.02368164,0.025924683,-0.056121826,0.04953003,-0.005809784,-0.016815186,0.020004272,0.012481689,0.04559326,0.042114258,-0.026428223,0.020523071,0.013656616,-0.03326416,-0.017913818,0.032043457,0.0028133392,-0.016647339,-0.05960083,-0.016204834,0.020065308,-0.004737854,-0.06890869,-0.0073242188,0.0055160522,0.029846191,0.04107666,-0.019104004,-0.0259552,0.006362915,-0.014923096,-0.06842041,-0.012290955,-0.019088745,0.022476196,0.03643799,-0.04107666,0.014190674,0.015586853,0.0058135986,-0.015098572,0.013725281,-0.008163452,0.00094270706,-0.02507019,0.04397583,0.011474609,0.027053833,0.020370483,0.05230713,0.03744507,0.020751953,0.03173828,0.00617218,-0.008399963,-0.052947998,0.016159058,-0.068847656,0.023468018,0.02558899,-0.024459839,0.0033874512,-0.0016269684,-0.03756714,-0.01953125,0.0051345825,-0.028381348,0.020355225,0.021362305,-0.03842163,-0.022918701,-0.039733887,-0.010543823,0.0054779053,0.061035156,0.0143966675,-0.00806427,-0.030822754,-0.012374878,0.019348145,0.0046844482,0.008178711,-0.013053894,-0.016082764,-0.022369385,-0.009559631,-0.020477295,-0.014923096,0.023223877,-0.003107071,-0.0082473755,0.01612854,0.0010166168,0.0049934387,-0.027511597,0.009857178,0.035614014,-0.024337769,0.015914917,-0.01020813,0.020843506,-0.008232117,-0.019805908,-0.057617188,0.032073975,-0.0052757263,0.03387451,-0.032104492,0.009811401,0.010055542,0.021408081,0.012458801,-0.018081665,-0.009437561,-0.0008659363,-0.02255249,-0.08453369,0.054901123,-0.022354126,0.02986145,-0.0039100647,-0.006916046,0.032958984,-0.0011825562,0.009544373,0.024719238,-0.02279663,-0.010017395,-0.03656006,-0.025527954,-0.01965332,0.0021743774,-0.006275177,0.023040771,-0.003545761,0.022750854,-0.0071144104,-0.021560669,0.015777588,-0.0022716522,0.0045700073,0.023468018,-0.004589081,0.0061569214,0.049438477,0.01537323,-0.049072266,0.035858154,0.0009012222,-0.0015439987,-0.023712158,0.050994873,0.019851685,-0.006538391,0.0043792725,-0.009536743,-0.003736496,-0.014320374,0.0013628006,0.009429932,0.038909912,0.021270752,-0.03970337,0.0057754517,0.0040740967,-0.02798462,-0.010856628,0.02986145,0.025772095,-0.04714966,0.014434814,0.025604248,0.04046631,-0.03994751,0.007144928,0.006450653,0.02848816,0.020996094,0.007911682,-0.010673523,0.018432617,-0.020019531,0.028167725,0.0087509155,-0.016448975,-0.018295288,-0.005203247,0.02659607,0.025314331,0.010955811,-0.01121521,-0.013717651,-0.011222839,0.0011606216,-0.01802063,0.02053833,0.017120361,0.007095337,-0.010231018,0.007686615,0.026779175,-0.04333496,-0.011924744,-0.005329132,0.038482666,-0.0011196136,-0.010658264,0.031097412,0.0039711,0.03466797,-0.043395996,-0.018493652,-0.010749817,0.004764557,-0.020248413,-0.056610107,-0.02432251,0.010353088,0.021835327,-0.0069885254,0.010566711,0.030548096,-0.014884949,-0.0015239716,0.010955811,0.01550293,-0.0181427,0.0012702942,-0.05859375,-0.0032367706,-0.014884949,-0.011665344,-0.028808594,0.013877869,-0.030395508,-0.027450562,0.0019893646,-0.013801575,-0.0026416779,-0.0010595322,-0.0031833649,0.04055786,-0.023269653,0.009864807,-0.015670776,-0.026855469,-0.016067505,0.0012149811,0.024139404,-0.054748535,0.018356323,-0.010147095,-0.0035266876,0.0012626648,-0.004650116,0.021072388,-0.001707077,0.021499634,0.028442383,-0.044952393,0.034332275,-0.025894165,0.009223938,0.0020065308,-0.015159607,-0.0022068024,-0.018478394,-0.008148193,0.03665161,-0.007850647,-0.010322571,-0.021530151,-0.027877808,-0.016967773,-0.047180176,0.026321411,0.018966675,0.04663086,-0.020462036,0.004501343,0.014282227,0.015350342,-0.004875183,-0.012626648,0.00085401535,0.012374878,0.015487671,-0.0038375854,-0.030090332,-0.026626587,-0.019485474,-0.002986908,-0.05291748,-0.053619385,-0.017089844,0.017837524,0.014183044,-0.021194458,-0.0178833,-0.018295288,-0.0028362274,-0.02961731,0.0049858093,-0.013412476,0.018569946,-0.007686615,-0.0178833,0.009414673,0.0064086914,-0.033233643,0.02986145,0.004184723,-0.007736206,-0.013664246,-0.006340027,0.019805908,0.008560181,-0.0035419464,-0.015136719,-0.019882202,-0.014633179,-0.06506348,0.019989014,-0.0068588257,0.011993408,-0.009971619,-0.011878967,-0.03781128,-0.008071899,-0.018295288,-0.008590698,0.0018024445,0.009391785,0.010292053,0.013664246,-0.002325058,-0.01184082,-0.024658203,-0.018508911,0.0033340454,0.009407043,-0.009590149,0.013191223,0.048461914,0.009643555,-0.017364502,-0.0010290146,0.0066184998,0.029296875,-0.028366089,-0.007896423,0.0010490417,0.026428223,-0.023330688,-0.022659302,-0.034576416,0.002357483,0.0657959,-0.0098724365,-0.014442444,-0.015602112,0.0044937134,0.023040771,0.040740967,-0.036315918,0.013664246,-0.039520264,0.023269653,-0.030944824,0.02758789,0.00356102,0.03390503,-0.020965576,-0.041412354,-0.003332138,0.0289917,-0.018920898,-0.051940918,-0.013916016,-0.06939697,-0.01083374,-0.026885986,-0.01374054,0.006198883,-0.0016469955,-0.024291992,-0.076171875,0.008071899,0.05126953,0.0030498505,0.015060425,-0.0052261353,0.008369446,0.023498535,-0.019195557,-0.024520874,0.01739502,-0.020019531,-0.009338379,-0.016647339,0.014541626,-0.013877869,-0.024963379,0.025970459,-0.0021076202,0.0077819824,-0.013587952,0.0033664703,-0.017456055,0.00006979704,-0.0075035095,0.0048599243,-0.0056877136,-0.021270752,0.030166626,-0.04888916,0.02470398,0.0039863586,0.006259918,0.01651001,0.02645874,0.02130127,-0.036254883,-0.011550903,0.0046424866,0.0027370453,0.022140503,-0.027282715,0.045654297,0.009025574,-0.008407593,0.015533447,-0.027954102,0.00023174286,-0.039398193,-0.026046753,0.030319214,0.0023403168,0.0042152405,-0.010719299,0.00415802,-0.001914978,-0.0061569214,-0.012588501,-0.009002686,-0.00932312,-0.016586304,0.009353638,-0.009147644,0.027374268,-0.0068626404,0.022949219,0.02532959,0.04135132,0.009544373,0.0014648438,-0.011413574,0.01751709,-0.023742676,-0.009346008,0.011001587,0.025878906,0.004463196,0.02128601,0.02204895,-0.044769287,-0.02204895,-0.0025615692,-0.022354126,0.013938904,-0.019134521,0.009757996,-0.005382538,0.01625061,-0.01927185,-0.03074646,0.00015282631,-0.030578613,-0.01878357,0.0020370483,0.010314941,0.004589081,0.012519836,0.0010070801,0.0069274902,-0.0047683716,0.03845215,-0.012413025,-0.017059326,0.022735596,0.04916382,0.00038909912,-0.02758789,0.0021438599,-0.0035858154,-0.012229919,-0.0013551712,-0.004322052,0.021057129,0.02720642,-0.011993408,0.032073975,-0.0061531067,0.04977417,-0.008026123,0.019714355,0.0027751923,0.008605957,-0.000869751,0.040283203,-0.044189453,0.004486084,0.0076293945,-0.022506714,-0.016403198,-0.013023376,-0.011878967,0.0124435425,0.009864807,-0.018096924,0.018081665,0.027633667,0.023406982,-0.02923584,-0.0060272217,0.0034446716,-0.04458618,-0.026046753,0.016708374,-0.01184845,-0.005908966,0.019500732,-0.01777649,0.007133484,-0.030441284,0.028015137,0.009460449,0.016159058,-0.015396118,-0.015975952,-0.012023926,-0.013412476,-0.025009155,0.0141067505,0.005168915,0.052093506,0.029846191,0.021453857,0.032043457,0.022018433,0.005832672,-0.045806885,-0.022491455,0.013877869,-0.017089844,0.016967773,-0.013763428,0.038513184,0.058288574,-0.0005531311,0.024215698,0.051086426,0.04244995,-0.010261536,0.021453857,-0.015945435,0.00522995,-0.016601562,0.03262329,-0.0005288124,0.032928467,-0.02355957,0.023086548,0.0032539368,0.020721436,-0.039276123,0.018569946,0.06567383,0.019348145,-0.0085372925,0.03366089,-0.007297516,-0.010551453,-0.0063285828,-0.026275635,0.05178833,0.005092621,0.03012085,0.031311035,0.011207581,-0.024887085,0.026123047,-0.011222839,-0.035705566,0.05618286,0.009117126,-0.019515991,-0.009361267,-0.009902954,0.021728516,-0.06719971,-0.0256958,0.025436401,-0.018676758,0.0006084442,-0.009994507,0.004234314,0.00059843063,0.015220642,0.007858276,0.027755737,-0.017593384,-0.0013780594,0.016326904,0.007637024,0.018463135,0.027313232,0.03363037,-0.024246216,-0.017547607,0.0107040405,0.02519226,0.00056505203,-0.0047340393,0.035614014,0.009712219,0.041870117,0.027557373,-0.02607727,0.015159607,0.04257202,0.0066452026,-0.0071525574,0.04977417,0.027252197,0.020629883,0.037841797,0.032836914,0.032226562,-0.021957397,0.016906738,-0.0003707409,-0.006000519,-0.016448975,-0.0010957718,0.01701355,-0.00087451935,0.024536133,-0.012588501,-0.0042304993,0.011482239,0.03463745,-0.011207581,-0.01360321,-0.001625061,0.0050468445,-0.003458023,-0.00831604,0.0070648193,-0.02357483,0.009803772,0.022506714,0.024780273,-0.038116455,0.00831604,0.00092458725,-0.021026611,-0.014556885,0.030822754,-0.053619385,0.011207581,-0.0012407303,-0.018051147,-0.03970337,0.017349243,0.019119263,-0.009819031,0.03024292,0.007904053,0.003528595,0.0051651,0.024398804,0.02255249,-0.0035114288,0.0042877197,-0.0063209534,0.007843018,0.031051636,-0.01071167,0.0011148453,-0.024658203,-0.0027713776,0.024459839,-0.018676758,-0.015945435,0.0032787323,-0.010238647,-0.03086853,0.0006146431,0.048614502,0.020736694,0.03062439,-0.007827759,-0.013153076,-0.001033783,0.040985107,0.0059165955,-0.016647339,-0.024841309,0.018203735,-0.016357422,0.04510498,0.05505371,-0.0113220215,0.019241333,-0.0018262863,-0.02482605,-0.006668091,-0.019607544,0.022903442,-0.026748657,0.009712219,0.0020370483,0.016525269,-0.021972656,-0.0138549805,-0.0020217896,-0.032470703,-0.02418518,-0.019943237,0.0005092621,0.0019283295,0.036956787,0.019378662,0.026626587,-0.015213013,0.056274414,-0.006313324,0.055755615,0.001709938,0.0054740906,0.03479004,0.02748108,0.028533936,0.019714355,0.028961182,-0.031280518,0.009147644,0.017562866,0.0090789795,0.009185791,-0.0025539398,-0.0031871796,0.04272461,-0.019897461,0.031402588,-0.0062065125,-0.0056610107,0.004169464,-0.015388489,-0.014671326,0.0027198792,-0.0018825531,0.003932953,0.04385376,-0.012908936,-0.0035648346,-0.011306763,-0.015510559,0.029190063,-0.011001587,0.0026607513,0.001420021,-0.019699097,0.020217896,-0.0184021,-0.026809692,0.0079193115,0.020431519,-0.03302002,-0.017684937,0.007598877,0.019012451,-0.029373169,0.036865234,0.029891968,-0.0069885254,-0.010772705,0.047027588,-0.010269165,0.027832031,-0.0028190613,0.053710938,0.04309082,0.010421753,0.0007133484,0.023040771,0.027435303,-0.015731812,0.014968872,0.04360962,0.0068511963,0.009635925,-0.008384705,-0.016983032,0.009407043,-0.018218994,-0.024337769,-0.001698494,-0.02268982,-0.014259338,-0.0004324913,0.022460938,-0.011260986,0.016571045,-0.01701355,-0.01826477,0.013313293,0.037231445,0.014907837,-0.047790527,-0.008964539,0.010139465,0.020095825,-0.028182983,-0.01486969,0.005783081,-0.04257202,0.0023059845,0.03024292,-0.0012197495,-0.00027894974,-0.014717102,-0.011627197,0.049865723,0.008346558,0.01134491,0.023834229,-0.013076782,0.025131226,-0.0085372925,-0.0035171509,0.0002322197,-0.0075035095,-0.0031776428,0.01436615,-0.010063171,-0.013336182,0.021453857,0.010314941,0.019424438,-0.001294136,0.00093507767,0.029418945,-0.024353027,-0.017303467,0.007247925,0.02973938,-0.02798462,-0.0287323,-0.017364502,0.02255249,0.050354004,-0.020339966,-0.0143585205,-0.0017471313,0.025466919,0.032073975,0.048339844,0.0064086914,0.044952393,0.00907135,-0.009208679,-0.028686523,0.0149002075,0.0033073425,-0.023880005,0.020812988,-0.017547607,0.004295349,0.0044822693,0.024856567,0.0033416748,-0.019500732,-0.013328552,-0.015609741,-0.005958557,0.008773804,-0.02748108,0.0234375,-0.028167725,-0.012184143,0.0121536255,-0.00046873093,-0.028717041,-0.0357666,-0.004459381,-0.0048561096,-0.066833496,0.0027275085,-0.02532959,-0.007095337,-0.017822266,-0.00018274784,-0.020599365,0.03225708,-0.010284424,-0.007129669,0.004142761,0.016555786,-0.0036830902,-0.0025844574,0.02999878,-0.022842407,-0.029266357,-0.005558014,0.0011644363,-0.018005371,0.024749756,-0.02456665,0.032958984,0.01763916,0.004425049,0.0055885315,-0.0077667236,-0.014808655,0.004180908,-0.045959473,-0.016036987,0.009498596,0.021469116,0.002840042,-0.0025177002,0.04751587,-0.020935059,-0.0077819824,0.027557373,0.044708252,-0.0042419434,0.058288574,-0.029586792,0.00024795532,-0.027435303,-0.0019187927,-0.006259918,0.015098572,0.01461792,0.009490967,0.00705719,0.02468872,0.019744873,-0.017288208,-0.0184021,0.030166626,0.015899658,-0.008712769,0.040252686,0.01033783,0.0014781952,-0.015563965,-0.01197052,0.0055770874,0.042419434,0.015510559,0.016204834,-0.02166748,0.016601562,-0.017288208,0.0074501038,0.03189087,-0.032165527,-0.04043579,-0.0109939575,-0.03164673,0.011878967,-0.0020122528,0.012466431,-0.0022068024,0.009963989,-0.046966553,-0.030319214,-0.029434204,0.017456055,0.007411957,0.0064201355,-0.0009045601,0.0036888123,-0.0009379387,-0.034423828,-0.0018444061,-0.0446167,-0.027740479,-0.0090789795,-0.018569946,0.021194458,0.006378174,-0.0075302124,0.013473511,0.002576828,-0.0063323975,0.0042304993,0.030792236,-0.01108551,-0.0037784576,0.03302002,0.016540527,-0.018203735,-0.0017976761,-0.019485474,-0.00737381,0.0345459,0.0050201416,0.015655518,-0.004272461,0.016662598,0.0071105957,0.0051193237,0.042816162,-0.005832672,0.019821167,-0.03173828,-0.0052757263,-0.0027122498,-0.020629883,0.032470703,-0.0016393661,-0.028915405,-0.015174866,-0.016860962,-0.028579712,0.0109939575,0.005054474,0.0368042,-0.010177612,0.037475586,-0.015853882,-0.030166626,0.017501831,0.0011701584,-0.02861023,0.004146576,0.023269653,0.0129470825,0.019378662,-0.0056610107,0.0027580261,-0.027786255,-0.0027713776,-0.0046806335,-0.0015850067,-0.02003479,0.0031719208,0.020751953,0.030517578,0.0054397583,0.0121536255,0.021942139,0.0071983337,0.026428223,0.011703491,0.0385437,0.01335144,-0.031051636,0.011131287,0.0007710457,-0.025634766,-0.00969696,-0.0044136047,0.01676941,-0.030548096,0.002702713,0.0035171509,0.043762207,-0.019638062,0.013839722,-0.017364502,-0.0058555603,-0.047790527,-0.009178162,-0.049987793,0.016998291,0.015686035,0.016342163,0.021057129,0.019363403,-0.036865234,0.0008368492,0.03062439,-0.0034732819,-0.047821045,-0.010574341,0.010917664,0.01600647,0.014533997,0.018997192,-0.033233643,-0.029296875,-0.0025749207,0.006088257,-0.0007305145,-0.016036987,0.027160645,0.04034424,-0.017532349,-0.017486572,0.03074646,0.0128479,0.0044136047,0.013015747,0.0045433044,0.04699707,0.039367676,-0.0014753342,0.024108887,0.019882202,-0.036621094,0.06210327,-0.01436615,0.027374268,-0.015159607,-0.0062179565,-0.028533936,-0.01374054,-0.006626129,0.008811951],"createdAt":"2026-04-18T18:40:43.165Z","updatedAt":"2026-04-27T22:32:47.544Z","lastSeenAt":"2026-04-27T22:32:47.544Z","tsv":"'/api/v1/accounts/113/balance':42,195 '/request':126 '0.02':113,125,186 '000':102 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':94 '20':101 '6':108 'Base network API' 'USDC micropayment API' 'accept':140 'access':37,151,207 'account':4,18 'account balance API' 'account-balance' 'across':127 'addit':165 'advertis':121,150 'ai/ml':63 'analysi':170 'analyt':62 'api':36,58,144,206,224 'balanc':5,19 'base':8,22,79,96,103 'beyond':202 'broader':48 'call':12,26,57 'categori':167 'challeng':88 'classif':173 'connect':233 'consist':116 'content':239 'contract':93 'crawl':221 'crypto payment API' 'data':61,66 'decim':109 'detail':212 'doc':213,223 'document':201 'dozen':52 'embed':174 'endpoint':6,20,30,59,83,129,139,166,196 'exact':135 'exampl':215 'exchang':177 'feed':176 'finance/web3':65 'flat':122 'found':218 'function':192 'gate':3,17,71 'generic':204 'geocod':179 'grant':153 'header':158 'howev':189 'includ':168 'infer':64 'json-response' 'key':145 'label':208 'land':162 'limit':148 'list':164 'lowpaymentfee' 'lowpaymentfee.com':32 'made':132 'maxamountrequir':99 'network':80 'offer':51 'openapi':210 'page':163,228 'paid':9,23 'part':45 'path':41 'pay':55 'pay-per-cal':54 'pay-per-call' 'pay-per-request API' 'payment':75,90,130,157 'per':11,25,56,114 'per-cal':10,24 'platform':49,119,160 'point':188 'post':141 'premium':35,205 'price':123,175,187,225 'probe':84 'prompt':235 'protocol':76 'provid':33 'pure':154 'rate':147,178 'readm':227 'request':89,115,142 'resourc':38 'respons':216 'return':85,230 'schema':211 'scheme':136 'sentiment':169 'servic':69 'sinc':105 'span':60 'specif':82,191 'substant':238 'summar':172 'text':171 'translat':111 'unit':104 'usdc':14,28,92,106 'usdc-base' 'use':107 'util':68 'via':72,133 'wallet':234 'well':200 'well-docu':199 'x402':2,16,74,87,156 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"6c9b9e1f-79e9-4bad-ab93-b9832bb8cff8","listingId":"ac8cbe1b-c80f-4882-a80d-cc31984ff601","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/113/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":"2026-04-18T18:40:43.165Z"}],"sources":[{"listingId":"ac8cbe1b-c80f-4882-a80d-cc31984ff601","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/113/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:43.165Z","lastSeenAt":"2026-04-27T22:32:47.544Z"}],"details":{"listingId":"ac8cbe1b-c80f-4882-a80d-cc31984ff601","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/113/balance \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns an x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/113/balance"},{"claim":"Platform advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/113/balance"},{"claim":"Platform offers endpoints across data analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying account balance information via a single paid API call","Integrating x402-compatible payment flows into agent workflows","Demonstrating micropayment-gated API access on Base L2"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base","Use cases needing no-signup, pay-per-call API access"],"notFor":["Users who need detailed API documentation or response schemas before integrating","High-volume consumers who want bulk pricing or subscription plans","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:35.313Z"},"updatedAt":"2026-04-27T22:32:47.544Z"}}