{"id":"6a0d4117-da04-4efd-9dbf-47ac4fff16f4","shortId":"jdyqqN","kind":"x402","title":"Check MKR wallet balance via x402 micropayment on Base for $0.02 per request.","tagline":"Check MKR wallet balance via x402 micropayment on Base for $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns the balance of a MKR (Maker) wallet. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, all gated behind the x402 payment protocol. The endpoint accepts POST requests and charges $0.02 per call, settled in USDC on the Base network. No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe provider's landing page lists several API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. This specific endpoint (/api/v1/wallet/MKR/balance) falls under the Finance & Web3 category. The x402 challenge confirms the endpoint is live, advertising a maxAmountRequired of 20000 base units of USDC (6 decimals), which equals $0.02.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no example payloads available. The exact request body format and response structure must be inferred or discovered experimentally.","tags":[],"capabilities":["wallet-balance","mkr-token","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["crypto","finance"],"synonyms":["MKR balance","Maker token balance","wallet balance API","crypto balance check","MKR wallet lookup","token balance query"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all render only 'Connect wallet' with no technical content.","No OpenAPI or schema definition found; request body format is guessed.","Response schema is unknown — example_response_json is null.","The provider lists many diverse API categories (AI, analytics, finance, infrastructure) all at the same price, which may indicate a generic or placeholder service."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wallet/MKR/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/wallet/MKR/balance","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, documentation is essentially nonexistent — no OpenAPI spec, no request/response schema, no examples. The docs, pricing, and README pages all show only a wallet-connect prompt. The request and response formats are entirely inferred.","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":"2026-04-19T14:34:14.901Z","embedding":[-0.016967773,-0.019699097,0.027069092,-0.008094788,-0.020263672,-0.033081055,0.000746727,0.042419434,0.047943115,-0.0317688,0.009117126,-0.029174805,-0.026046753,-0.020202637,0.019805908,0.016418457,-0.038848877,0.0048942566,-0.036315918,0.048339844,0.041259766,-0.026473999,-0.010406494,0.042053223,0.0021915436,-0.007423401,0.005584717,-0.038238525,-0.051574707,-0.025405884,0.039733887,-0.020462036,-0.0036506653,0.021652222,-0.0060806274,-0.0023612976,0.007698059,0.007621765,0.014846802,-0.016662598,-0.025665283,-0.07330322,0.008781433,0.028701782,-0.027526855,-0.013725281,0.040863037,-0.004459381,0.022155762,-0.015312195,-0.04321289,0.00756073,0.0055389404,0.025360107,0.020584106,0.006465912,0.011138916,-0.030654907,0.0050086975,0.041259766,0.021942139,-0.05419922,-0.0051841736,-0.010986328,-0.011680603,0.01576233,0.000017046928,0.040863037,0.013893127,0.050323486,0.012580872,0.05328369,0.023483276,0.01550293,-0.024414062,-0.03112793,0.008529663,0.013534546,-0.031982422,-0.033569336,-0.012619019,-0.0524292,-0.08404541,0.0021743774,-0.0158844,-0.061645508,-0.012786865,0.03439331,-0.006275177,0.023132324,-0.09625244,-0.03753662,0.014099121,0.03427124,0.012931824,-0.048858643,-0.03189087,0.0038166046,-0.0025844574,0.021255493,-0.012306213,-0.03414917,0.034576416,0.012687683,0.038024902,0.03970337,0.028961182,-0.0044021606,0.012512207,0.0009384155,-0.04711914,0.00466156,0.018218994,-0.005268097,0.0038642883,0.022323608,-0.01348114,-0.0037631989,-0.02357483,0.01928711,-0.04626465,0.061553955,0.05581665,-0.019485474,-0.008354187,-0.016860962,-0.012321472,0.03857422,-0.041778564,0.033081055,0.03479004,0.019439697,0.021118164,0.009101868,-0.045043945,0.012062073,-0.00623703,-0.015541077,-0.010543823,-0.008346558,0.043670654,-0.03048706,0.005168915,-0.0041160583,-0.088378906,-0.0071258545,-0.013442993,0.029251099,-0.009796143,-0.016357422,0.0131073,-0.0054740906,0.006290436,0.014625549,-0.010978699,-0.03665161,-0.029434204,0.039031982,0.011711121,0.03945923,-0.0055274963,0.06500244,0.033294678,-0.01876831,0.010772705,0.02897644,-0.006542206,-0.047912598,-0.06915283,-0.030838013,0.0023326874,-0.019699097,-0.03048706,0.0070152283,-0.036102295,-0.07220459,-0.0031909943,-0.03060913,-0.0037670135,-0.027954102,-0.015945435,-0.023025513,0.04953003,0.012908936,-0.023635864,-0.03152466,0.0038375854,0.06335449,0.03086853,0.025115967,0.018600464,0.0026760101,0.027053833,0.033325195,-0.020736694,-0.022033691,-0.00057554245,-0.032958984,0.026763916,0.016647339,0.018600464,-0.023788452,0.03475952,0.009796143,0.008010864,-0.018035889,-0.0005812645,-0.028930664,-0.027175903,0.02192688,0.018966675,0.0099105835,0.0063705444,-0.019363403,-0.029006958,0.004917145,-0.0029735565,-0.005607605,0.0018949509,0.064575195,-0.0096206665,0.038513184,0.041381836,-0.00054216385,-0.033477783,0.028152466,0.057769775,0.033721924,0.022369385,-0.02456665,0.010177612,0.0362854,-0.019042969,-0.004787445,0.0023860931,0.0052452087,-0.029769897,-0.0061912537,0.010292053,-0.01537323,-0.0002872944,-0.016571045,-0.01512146,0.0042648315,-0.02003479,-0.008621216,-0.06149292,-0.07879639,0.04928589,0.0052757263,0.027023315,-0.0129776,-0.00315094,-0.007068634,-0.014587402,-0.04284668,0.044189453,0.07879639,-0.012138367,-0.03201294,0.03274536,-0.03338623,-0.05142212,-0.026672363,-0.016525269,-0.025100708,-0.028747559,0.014732361,-0.049438477,0.0017871857,0.028915405,0.032165527,0.024154663,0.022827148,-0.046142578,-0.014038086,-0.019500732,-0.01991272,-0.05105591,0.018814087,-0.013946533,0.028839111,0.043884277,-0.004634857,0.020462036,-0.012031555,-0.001294136,0.0022907257,0.010253906,0.0047569275,0.0004851818,0.012428284,0.03265381,-0.050720215,0.02645874,-0.011161804,0.03704834,-0.056762695,0.021606445,-0.0056610107,0.022827148,0.07208252,0.0132751465,-0.03741455,0.008621216,0.00090265274,0.051513672,0.032928467,-0.0104522705,0.0037193298,-0.034820557,0.063964844,-0.013641357,0.008468628,0.026367188,0.024520874,0.05130005,0.014266968,-0.036010742,-0.037628174,0.030075073,-0.018005371,0.040252686,-0.030654907,0.05319214,-0.022323608,-0.0028572083,-0.031082153,-0.005832672,-0.010444641,0.0054855347,-0.0016679764,0.023788452,-0.049865723,-0.04107666,0.020553589,0.022369385,-0.030197144,-0.032562256,0.029220581,0.02607727,-0.03338623,0.0003809929,-0.030731201,-0.014884949,-0.05532837,0.021194458,-0.01802063,0.020248413,-0.0032444,-0.039855957,0.02772522,0.018371582,-0.026046753,0.037322998,0.0075912476,-0.005306244,-0.062805176,-0.036499023,-0.038391113,-0.040924072,0.02279663,0.014144897,-0.014419556,0.08758545,0.022079468,-0.03994751,-0.044952393,0.0035572052,-0.05996704,-0.006713867,0.016921997,0.00016927719,-0.017974854,-0.009140015,-0.02935791,0.021530151,0.034057617,0.033050537,0.00042557716,0.09106445,0.022842407,0.006160736,0.00051498413,0.01586914,0.030456543,0.00089740753,-0.016525269,-0.066101074,0.0055885315,0.028747559,-0.0135269165,-0.010269165,-0.081848145,0.046051025,0.03074646,0.06958008,0.014099121,0.0158844,0.01777649,0.012191772,-0.014968872,-0.04119873,0.0113220215,-0.018814087,-0.039642334,0.014755249,-0.018463135,0.017974854,-0.021102905,0.035308838,-0.018432617,0.0060691833,-0.016357422,0.03994751,-0.014625549,-0.026550293,0.023788452,0.0491333,0.0030956268,0.022155762,-0.005744934,-0.005908966,-0.0026397705,-0.033111572,-0.00030612946,0.011627197,-0.012680054,-0.02027893,-0.07110596,-0.030944824,0.026901245,-0.0013093948,-0.051483154,-0.005065918,0.026641846,0.022399902,0.0128479,-0.0181427,-0.010536194,0.008972168,-0.034240723,-0.07092285,0.0067329407,-0.03579712,0.040924072,-0.0005726814,-0.029556274,0.033050537,0.011299133,0.012466431,-0.054870605,0.043029785,0.036468506,0.014297485,-0.023162842,0.041137695,0.004585266,-0.0037727356,0.018585205,0.04156494,0.05267334,0.031585693,0.037872314,0.019454956,0.0056037903,-0.057769775,-0.0013809204,-0.05596924,0.013336182,0.060638428,-0.05810547,-0.007091522,0.004425049,-0.028701782,-0.043884277,0.021865845,-0.03741455,0.012702942,0.0335083,-0.035888672,-0.030014038,-0.06524658,-0.025054932,-0.0043640137,0.101745605,-0.0064048767,0.025100708,-0.053009033,0.004196167,0.01689148,-0.0015850067,0.00087594986,-0.01158905,0.0066070557,-0.033172607,-0.004962921,0.0033245087,-0.0061798096,0.024276733,-0.024505615,-0.0046424866,-0.0077590942,0.048553467,-0.025238037,0.024520874,0.008522034,0.012466431,-0.038970947,0.03152466,-0.038085938,0.016586304,-0.000014603138,-0.009925842,-0.050750732,0.029815674,0.01473999,0.036102295,-0.031982422,0.0017356873,0.0043945312,0.02557373,-0.008338928,-0.0022468567,-0.0035572052,0.0049591064,-0.042236328,-0.08691406,0.014930725,-0.018554688,0.04156494,0.02645874,0.0051574707,0.029129028,-0.002904892,0.0053367615,0.025482178,-0.0149002075,-0.0064926147,-0.016235352,-0.008293152,-0.028320312,0.001033783,-0.025405884,0.015197754,-0.008575439,0.028457642,-0.0062217712,-0.004627228,0.011245728,0.0143585205,0.0068359375,0.0112838745,-0.01499176,-0.003396988,0.046051025,0.010063171,-0.067871094,0.04171753,0.002603531,-0.01676941,0.016967773,0.053588867,-0.003545761,-0.003610611,-0.00749588,-0.021713257,-0.014732361,-0.028884888,-0.0032444,0.014350891,-0.004650116,0.0048561096,-0.05303955,0.008056641,0.024765015,-0.040283203,-0.0051078796,0.036468506,0.005596161,-0.04788208,0.031951904,0.005722046,0.0335083,-0.02760315,-0.0011148453,-0.01701355,0.0074501038,0.01689148,0.015716553,-0.0060920715,0.014907837,-0.017044067,0.044403076,0.0084991455,-0.014930725,-0.010627747,-0.0018901825,0.041046143,-0.0071868896,0.004764557,-0.002216339,-0.009780884,-0.016921997,0.0022277832,-0.010269165,0.03567505,0.004360199,-0.0026760101,-0.00434494,-0.011047363,0.031158447,-0.007873535,-0.00014817715,0.003862381,0.04699707,-0.014778137,-0.018081665,0.041809082,0.019546509,0.0068588257,-0.01914978,-0.0007019043,-0.017562866,0.008911133,-0.011695862,-0.04034424,-0.011329651,-0.004058838,0.016952515,0.014732361,0.017730713,0.0132369995,-0.015640259,-0.0018339157,0.023010254,0.013809204,-0.0013580322,-0.026367188,-0.048431396,0.010627747,-0.014373779,-0.0075035095,-0.018707275,-0.0058937073,-0.019760132,-0.018798828,0.027786255,-0.029510498,0.008232117,-0.01399231,-0.010772705,0.022079468,-0.0046653748,0.014633179,-0.0007081032,-0.0037994385,0.012390137,0.017990112,0.018005371,-0.045715332,0.030197144,-0.029434204,-0.003932953,-0.025024414,0.0061416626,0.01876831,0.026412964,-0.0076560974,0.032318115,-0.028335571,0.030197144,-0.04550171,0.0049934387,-0.014144897,0.0059776306,-0.016235352,-0.0104522705,-0.0158844,0.03567505,0.009925842,-0.0012559891,-0.029006958,-0.04324341,-0.0042533875,-0.04586792,0.042388916,0.021316528,0.046722412,-0.035003662,-0.006511688,-0.008201599,0.039398193,-0.0064468384,-0.008666992,0.0007686615,0.028579712,0.011619568,0.027694702,-0.03643799,-0.019592285,0.008003235,-0.013763428,-0.033813477,-0.026687622,-0.029083252,0.010971069,0.042755127,0.0005965233,-0.035583496,-0.020889282,0.0005068779,0.014015198,0.0045318604,-0.030227661,-0.001996994,0.01864624,-0.0011043549,0.011779785,0.0075149536,-0.03768921,0.024612427,0.020690918,-0.004348755,-0.023651123,0.003408432,-0.0062217712,0.011505127,0.014671326,-0.020584106,-0.006576538,-0.010002136,-0.05529785,-0.0037460327,0.0011301041,0.023910522,-0.019989014,0.00642395,-0.026794434,-0.01939392,-0.028076172,-0.0143966675,0.0107803345,0.012184143,0.026138306,0.018737793,0.025817871,-0.03112793,-0.022857666,-0.0004963875,-0.0033435822,0.007598877,-0.009353638,0.037963867,0.041809082,-0.010177612,-0.019760132,-0.0045814514,0.007030487,0.015182495,-0.03967285,0.025146484,-0.0015563965,0.004337311,0.013549805,0.0039482117,-0.030776978,0.006088257,0.061584473,-0.0021209717,0.0025024414,-0.015052795,0.005466461,0.022705078,0.044921875,-0.044647217,-0.014732361,-0.0078125,0.014625549,-0.028625488,0.024169922,-0.022033691,0.037994385,-0.022140503,-0.03591919,-0.007030487,0.016159058,-0.0065231323,-0.059265137,-0.01940918,-0.090026855,-0.027694702,-0.013145447,-0.040161133,-0.015556335,0.012046814,-0.02003479,-0.05871582,0.0115356445,0.0552063,0.000017404556,0.026901245,0.009101868,0.01348114,0.026687622,-0.028503418,-0.006996155,0.00037932396,-0.017822266,-0.024353027,-0.034179688,0.03036499,-0.012428284,-0.01121521,0.013442993,0.011054993,0.008888245,-0.0045547485,0.008460999,-0.005455017,0.022232056,-0.016586304,-0.016799927,0.0071105957,-0.00623703,0.04135132,-0.04058838,0.014411926,0.014656067,0.004589081,0.004638672,-0.0043029785,0.04901123,-0.04260254,-0.0021133423,0.0069885254,0.009925842,0.025268555,0.0024738312,0.03970337,0.008094788,-0.016036987,-0.005771637,-0.011886597,-0.009353638,-0.022338867,-0.054779053,0.008758545,-0.007358551,0.030029297,-0.021591187,0.0003402233,0.01386261,0.0095825195,0.026031494,0.003314972,0.007484436,-0.033599854,-0.014984131,0.0016889572,0.021820068,-0.020187378,0.012031555,0.045776367,0.020751953,0.0043678284,-0.011985779,-0.0005865097,0.034576416,0.002773285,0.019836426,0.024887085,0.011619568,-0.0022716522,0.04055786,-0.001244545,-0.016296387,-0.024856567,-0.018447876,0.003622055,0.013183594,-0.019256592,0.024398804,0.008369446,0.011138916,-0.024719238,-0.028625488,0.006072998,-0.012954712,-0.011329651,-0.028701782,-0.0059928894,0.0340271,0.0062026978,0.016342163,0.0023174286,0.01663208,0.01260376,-0.017440796,0.021453857,0.012794495,0.043914795,0.03479004,-0.009864807,-0.025878906,0.0038890839,0.005306244,-0.01159668,-0.02116394,0.025161743,0.08026123,-0.011657715,0.008453369,-0.010421753,0.039520264,-0.028213501,0.013381958,0.006752014,0.030944824,0.007972717,0.0072288513,-0.025756836,0.035888672,-0.0012016296,-0.007205963,0.0007224083,-0.013084412,0.0010929108,0.020355225,0.022476196,-0.009048462,0.008666992,0.029205322,0.02420044,0.004173279,0.006072998,0.006603241,-0.061676025,-0.008155823,0.0206604,-0.008148193,-0.010536194,0.011917114,-0.024520874,0.014381409,-0.015823364,-0.0027313232,0.009925842,0.021347046,-0.00712204,-0.028121948,-0.007827759,-0.02532959,-0.02558899,0.0010671616,0.0056991577,0.04156494,-0.016708374,0.027404785,0.049224854,0.0037841797,-0.014122009,-0.033477783,-0.024642944,0.011650085,0.008895874,-0.00045132637,-0.016906738,0.033050537,0.059173584,-0.003238678,0.031036377,0.014190674,0.051940918,-0.0063323975,0.004524231,0.0046920776,0.018539429,-0.0026226044,0.021484375,-0.022323608,0.029525757,-0.040985107,0.011138916,0.007030487,0.016494751,-0.0020828247,0.023605347,0.05291748,0.02154541,-0.020187378,0.028411865,-0.03753662,-0.01977539,0.014137268,-0.011192322,0.039398193,0.027023315,0.046539307,0.03265381,0.014846802,-0.010414124,0.0075798035,-0.01739502,-0.0046691895,0.054107666,0.045166016,-0.03479004,-0.01675415,-0.008705139,0.0135650635,-0.020568848,-0.00592041,0.010940552,-0.024551392,0.013069153,-0.0003671646,-0.022323608,0.006088257,0.009437561,0.013809204,0.005771637,-0.028060913,0.025909424,0.011756897,0.01600647,0.012771606,-0.00831604,0.007534027,-0.022857666,-0.02520752,-0.013847351,0.016403198,-0.0004811287,-0.01348114,0.008132935,-0.014266968,0.0048599243,0.026641846,-0.031311035,0.014732361,0.014678955,0.015266418,0.0073051453,0.054473877,-0.016052246,0.03213501,0.027618408,0.010696411,0.019058228,-0.022842407,0.015304565,-0.011672974,0.012306213,-0.027648926,0.020431519,-0.0018844604,-0.0071029663,0.014762878,-0.0047683716,-0.01197052,0.012298584,0.028366089,-0.007472992,0.006500244,0.007095337,-0.0075798035,-0.009651184,-0.011985779,-0.016357422,-0.014465332,0.019073486,0.025741577,0.046325684,-0.018630981,0.038238525,0.016433716,-0.009963989,-0.040161133,0.028930664,-0.056396484,0.022094727,-0.015174866,-0.01259613,-0.06097412,0.021270752,0.0046844482,-0.0026817322,0.031829834,0.023620605,0.005256653,0.014083862,0.022598267,0.013809204,0.0032596588,-0.008087158,-0.029144287,0.025741577,0.023086548,-0.0068206787,-0.0034675598,-0.02998352,-0.0030498505,0.008110046,0.00819397,-0.006286621,0.0009050369,-0.022491455,-0.038635254,-0.004611969,0.017669678,0.0131073,0.043304443,-0.021118164,0.015930176,0.017837524,0.018661499,0.006752014,-0.012870789,-0.013893127,0.01033783,-0.016616821,0.029632568,0.033935547,-0.018569946,-0.0047721863,0.040039062,-0.030776978,0.011123657,-0.0054626465,0.022384644,-0.0020122528,0.01083374,-0.017471313,0.008270264,-0.032409668,-0.01739502,-0.0013589859,-0.007911682,-0.018661499,-0.0001424551,0.0004940033,0.013320923,0.048034668,0.017791748,0.010574341,-0.017990112,0.05834961,-0.0023708344,0.07324219,0.0020942688,0.0037631989,0.035095215,0.0054473877,0.023651123,-0.0062789917,0.029632568,-0.03479004,-0.0026474,0.031082153,0.008270264,0.007820129,-0.0009851456,-0.009254456,0.045837402,-0.02166748,0.04385376,-0.0036830902,-0.02166748,0.024612427,0.0076675415,-0.019607544,0.008293152,-0.011802673,-0.006767273,0.017105103,-0.040130615,-0.008918762,-0.007881165,-0.011520386,0.019012451,-0.0059814453,-0.008018494,-0.013931274,-0.0036621094,0.018859863,-0.010643005,-0.014419556,0.0019950867,0.008956909,-0.048614502,-0.013450623,0.016998291,0.024673462,-0.04498291,0.028121948,0.042785645,0.0022773743,-0.011131287,0.044555664,0.0026187897,0.037200928,-0.007587433,0.026855469,0.036132812,0.014801025,0.006263733,0.034973145,0.003063202,-0.011108398,0.0071907043,0.04473877,0.007587433,0.00623703,-0.008277893,0.015777588,0.021774292,-0.012283325,-0.008483887,-0.01852417,-0.011375427,-0.011230469,-0.0079956055,0.018814087,0.0035133362,0.021865845,-0.005168915,-0.016860962,0.00687027,0.025741577,0.021240234,-0.034484863,-0.0015153885,0.0019741058,0.010375977,-0.013084412,-0.014312744,0.011703491,-0.017501831,-0.00806427,0.011558533,-0.00157547,0.002401352,0.0040740967,0.011894226,0.058013916,0.018218994,-0.01309967,0.0061187744,-0.009277344,0.00043320656,-0.0126571655,0.018035889,-0.008293152,0.0025558472,0.004146576,0.04522705,-0.007896423,-0.017669678,0.012771606,0.013259888,0.0008416176,-0.0071868896,0.02204895,0.042144775,0.00092077255,-0.014076233,0.021987915,0.02217102,-0.025970459,-0.027191162,-0.0060806274,0.010856628,0.026031494,-0.0040779114,0.0018024445,-0.013404846,0.031951904,0.028533936,0.02947998,0.0058021545,0.045013428,-0.00056505203,-0.016113281,-0.035186768,0.023880005,-0.0041999817,-0.02305603,0.023956299,-0.019958496,-0.007282257,0.0041046143,0.045898438,-0.0017700195,0.0069465637,-0.009460449,-0.005290985,-0.01940918,0.01965332,-0.017913818,0.032318115,-0.042266846,-0.01576233,0.015930176,-0.023590088,-0.025054932,-0.011978149,0.0033664703,-0.026245117,-0.070495605,-0.0026607513,-0.014549255,-0.0029678345,-0.039611816,0.036071777,-0.03173828,0.0141067505,-0.014862061,-0.005004883,-0.014694214,0.015419006,0.024856567,0.008865356,0.04559326,-0.015701294,-0.040039062,-0.0032176971,0.0017089844,0.0061035156,0.026641846,-0.0087890625,0.031951904,-0.0055656433,-0.01737976,0.012260437,-0.003982544,0.0049934387,-0.0031986237,-0.012054443,-0.021652222,0.016159058,0.011367798,-0.013153076,-0.040252686,0.047332764,-0.010955811,-0.017242432,0.039001465,0.030578613,0.00012481213,0.049804688,-0.007041931,0.01259613,-0.014968872,-0.020324707,-0.011512756,-0.002779007,-0.010322571,-0.014266968,0.0021018982,0.019424438,0.046142578,-0.014183044,-0.016403198,0.022705078,0.00623703,-0.0021514893,-0.008766174,0.024673462,0.0037117004,-0.036865234,-0.004673004,0.016418457,0.0345459,0.010955811,0.024993896,-0.015686035,0.019592285,0.0021533966,0.007030487,0.028747559,-0.025283813,-0.039794922,-0.0064048767,-0.03074646,0.014183044,0.013298035,0.002840042,-0.024765015,0.027389526,-0.015098572,-0.03363037,-0.021408081,0.03277588,0.014381409,-0.011932373,-0.030578613,0.00085258484,-0.016448975,-0.016433716,-0.018981934,-0.05606079,-0.019500732,0.017730713,0.008590698,0.037963867,0.018981934,-0.01058197,-0.0050239563,0.030441284,0.018325806,0.017944336,0.017807007,0.0039100647,-0.010391235,0.03024292,0.010719299,0.007209778,-0.012237549,0.014312744,-0.00907135,0.023361206,-0.0025577545,0.014160156,-0.027999878,0.0124435425,-0.008857727,0.015052795,0.008682251,0.0029277802,0.014480591,-0.04550171,0.0018148422,-0.004924774,-0.002002716,0.011253357,-0.021560669,-0.027786255,-0.031677246,-0.008026123,-0.015144348,0.004764557,-0.000019729137,0.02998352,-0.012878418,0.035186768,-0.031433105,-0.028671265,0.013145447,0.0069847107,-0.012939453,0.003282547,0.027893066,0.009468079,0.011459351,0.0129776,0.0071105957,-0.040374756,-0.0066986084,0.012512207,-0.018554688,0.00062799454,0.012306213,0.010528564,0.022598267,0.00642395,0.024780273,0.0015115738,-0.0017280579,0.011528015,0.013259888,0.014526367,-0.006034851,-0.013641357,0.008071899,0.008483887,-0.026260376,0.008323669,-0.03326416,0.012298584,-0.02255249,-0.009613037,-0.016860962,0.0096206665,-0.003604889,0.028198242,-0.019088745,-0.00995636,-0.021011353,-0.030319214,-0.02810669,-0.00048685074,0.015701294,0.002204895,0.009780884,0.0051612854,-0.028244019,0.009742737,0.045715332,-0.0063819885,-0.016860962,-0.013336182,0.016525269,0.0011320114,0.005077362,0.010025024,-0.030899048,-0.024612427,0.0069885254,-0.006061554,0.01739502,-0.0056648254,0.017837524,0.033935547,-0.027313232,-0.023254395,0.027175903,-0.018600464,-0.016098022,0.01737976,0.011695862,0.024307251,0.037963867,-0.0154800415,0.012893677,0.021331787,-0.034179688,0.041992188,-0.010932922,0.020095825,-0.0060691833,0.0013809204,-0.035888672,-0.014968872,-0.009750366,0.014228821],"createdAt":"2026-04-18T19:28:25.817Z","updatedAt":"2026-04-23T11:04:02.755Z","lastSeenAt":"2026-04-23T11:04:02.755Z","tsv":"'/api':160 '/api/v1/wallet/mkr/balance':124 '/docs':158 '/pricing':159 '/readme':162 '0.02':11,24,69,152 '20000':143 '6':148 'MKR balance' 'MKR wallet lookup' 'Maker token balance' 'accept':64 'advertis':139 'ai':113 'analyt':112 'api':51,80,108 'attach':89 'avail':188 'balanc':4,17,33 'base':9,22,77,144 'base-network' 'behind':57 'bodi':192 'broader':44 'call':50,71 'caller':87 'categori':109,130 'challeng':133 'charg':68 'check':1,14 'confirm':134 'connect':168 'crypto balance check' 'data':111 'decim':149 'detail':175 'discov':201 'document':153 'endpoint':28,63,123,136 'equal':151 'exact':190 'exampl':186 'experiment':202 'extrem':155 'fall':125 'financ':116,128 'format':193 'gate':56 'header':94 'includ':110 'infer':199 'infrastructur':119 'key':81 'land':104 'learn':115 'limit':84 'list':106 'live':138 'lowpaymentfee.com':30,54 'machin':114 'maker':37 'maxamountrequir':141 'micropay':7,20 'mkr':2,15,36 'mkr-token' 'must':197 'network':78 'no-api-key' 'offer':52 'openapi':179 'page':105,163 'part':41 'pay':48 'pay-per-cal':47 'pay-per-request' 'payload':187 'payment':60,93,99 'per':12,25,49,70 'post':65 'prompt':170 'proof':100 'protocol':61 'provid':102 'rate':83 'render':165 'request':13,26,66,191 'request/response':182 'requir':86 'respons':195 'return':31 'schema':183 'settl':72 'sever':107 'simpli':88 'spars':156 'spec':180 'specif':122 'structur':196 'suit':45 'technic':174 'token balance query' 'unit':145 'usdc':74,147 'usdc-settlement' 'util':120 'valid':97 'via':5,18 'wallet':3,16,38,169 'wallet balance API' 'wallet-balance' 'web3':117,129 'x':92 'x-payment':91 'x402':6,19,59,98,132 'x402-payment'","prices":[{"id":"84530e0c-7097-4d3d-bf2c-45f33ae4eb3e","listingId":"6a0d4117-da04-4efd-9dbf-47ac4fff16f4","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/wallet/MKR/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":"2026-04-18T19:28:25.817Z"}],"sources":[{"listingId":"6a0d4117-da04-4efd-9dbf-47ac4fff16f4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wallet/MKR/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:25.817Z","lastSeenAt":"2026-04-23T11:04:02.755Z"}],"details":{"listingId":"6a0d4117-da04-4efd-9dbf-47ac4fff16f4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wallet/MKR/balance \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -d '{\"address\": \"0xYourWalletAddress\"}'","exampleRequest":{"address":"0x1234567890abcdef1234567890abcdef12345678"},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with x402 challenge, confirming it is live.","source_url":"https://lowpaymentfee.com/api/v1/wallet/MKR/balance"},{"claim":"maxAmountRequired is 20000 base units of USDC (USD Coin, 6 decimals) = $0.02 on Base network.","source_url":"https://lowpaymentfee.com/api/v1/wallet/MKR/balance"},{"claim":"The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access.","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) contain only a 'Connect wallet' prompt.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Checking the MKR token balance of a given wallet address","Building portfolio trackers that need on-demand balance lookups","Automated trading bots verifying MKR holdings before executing trades","Agent workflows that need to confirm wallet balances without managing API keys"],"bestFor":["Agents needing keyless, pay-per-call crypto balance checks","Low-volume or sporadic MKR balance queries where subscriptions are overkill","x402-native workflows on the Base network"],"notFor":["High-frequency balance polling where per-call fees add up quickly","Users who need multi-token or batch balance queries in a single call","Anyone requiring detailed documentation or guaranteed SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:32.212Z"},"updatedAt":"2026-04-23T11:04:02.755Z"}}