{"id":"6fcc497d-ded1-4bc2-a1bb-5ec053bb4a44","shortId":"XN6DZn","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 specified account (account ID 10 in the probed URL). It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories — all settled via the x402 protocol on the Base network using USDC.\n\nThe endpoint accepts POST requests and is gated by an x402 payment challenge. Each call costs $0.02 (20,000 base units of USDC with 6 decimals) paid to the provider's wallet on Base. No API keys, rate limits, or upfront commitments are required — callers simply attach the appropriate X-PAYMENT header with a valid x402 payment proof. The response MIME type is application/json.\n\nThe specific functionality of this particular endpoint — account balance retrieval — is not extensively documented beyond its title \"Premium API Access.\" The broader platform lists 16+ endpoints spanning sentiment analysis, text summarization, embeddings, price feeds, gas estimates, geocoding, and more, all at the same $0.02/request price point. Documentation pages (docs, pricing, README) returned only a \"Connect wallet\" prompt with no additional technical detail, so the exact request body schema and response fields for this endpoint remain unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","account-balance","pay-per-request","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["account balance API","x402 balance check","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","premium API access"],"warnings":["No request body schema or response schema documented — callers must discover the interface by trial","All documentation pages (/docs, /pricing, /README, /api) returned only 'Connect wallet' with no technical content","The endpoint path suggests a hardcoded account ID (10); it is unclear whether other account IDs are supported or what authorization model applies","The platform lists many endpoints but none appear to have public documentation beyond titles and prices"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/10/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/10/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 captured) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no documented request/response format, and all documentation pages returned only 'Connect wallet' with no useful content. The specific purpose of this endpoint beyond its generic title is unclear.","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":"2026-04-19T00:15:22.713Z","embedding":[-0.018173218,-0.015350342,0.040985107,0.008125305,0.015930176,-0.019088745,-0.012161255,0.040496826,0.0670166,-0.064453125,0.0335083,-0.044281006,-0.018173218,-0.012573242,-0.0010232925,0.01373291,-0.01247406,0.020828247,-0.051086426,0.04626465,0.0112838745,-0.0047035217,-0.031311035,0.03894043,-0.007423401,-0.028533936,-0.0035953522,-0.027297974,-0.03152466,-0.05505371,0.0357666,-0.02394104,-0.00027680397,0.021469116,0.005268097,-0.002960205,-0.0041999817,0.033416748,0.039031982,-0.018295288,-0.012466431,-0.050445557,0.01675415,0.017028809,-0.056518555,-0.002998352,0.010734558,-0.021896362,0.010498047,0.00623703,-0.07269287,0.009277344,0.00868988,0.005432129,0.018295288,0.01939392,0.003522873,-0.01751709,0.01260376,0.022445679,0.000787735,-0.05130005,-0.02218628,0.015083313,-0.0017633438,0.051452637,-0.0016708374,0.030822754,-0.0024337769,0.04660034,0.034301758,0.0546875,0.030456543,-0.0012578964,-0.0013713837,-0.018920898,0.021133423,0.030807495,-0.01966858,-0.03390503,-0.0036258698,-0.030532837,-0.06781006,0.005771637,-0.020309448,-0.04727173,-0.0234375,0.011505127,-0.028244019,0.0440979,-0.08270264,-0.016433716,0.0030822754,0.023330688,0.015129089,-0.036743164,-0.023483276,0.011772156,-0.0037975311,-0.00018239021,0.0056114197,-0.01651001,0.024047852,-0.010292053,0.039764404,0.04034424,0.017532349,0.015411377,0.00062036514,0.0031318665,-0.037384033,0.0045776367,0.008155823,-0.010978699,0.009811401,0.031204224,-0.020080566,0.014091492,-0.0368042,0.01637268,-0.04537964,0.07092285,0.030212402,-0.0109939575,0.014045715,-0.070739746,-0.026306152,0.018417358,-0.03778076,0.010314941,0.035705566,0.01991272,0.022338867,-0.014152527,-0.033935547,0.020950317,-0.004638672,-0.026809692,-0.031402588,-0.031433105,0.028381348,-0.024139404,0.024246216,0.009056091,-0.091552734,-0.008995056,-0.010887146,0.007583618,-0.015701294,0.0030460358,-0.0017633438,0.00818634,-0.027648926,-0.0009050369,-0.014343262,-0.007843018,-0.0015096664,0.021118164,-0.008163452,0.03793335,0.0070343018,0.01889038,0.02407837,-0.006980896,0.0418396,0.04272461,-0.026885986,-0.06210327,-0.091430664,-0.033233643,-0.011253357,-0.02658081,-0.01398468,-0.007045746,-0.008796692,-0.08868408,-0.010238647,-0.016830444,-0.018356323,-0.033294678,-0.007965088,-0.03567505,0.01838684,-0.018829346,-0.047058105,-0.014701843,-0.010940552,0.072143555,0.028533936,0.02658081,0.019943237,-0.00056934357,0.027648926,0.028381348,-0.026016235,-0.02470398,0.010154724,-0.015388489,-0.0041236877,-0.008804321,0.0005097389,-0.019805908,0.033325195,0.05984497,-0.014564514,0.0017061234,0.012748718,-0.047607422,-0.041107178,-0.008407593,0.008583069,0.015319824,-0.006462097,0.010818481,-0.046203613,-0.0017156601,0.0045166016,0.033355713,0.00187397,0.051696777,-0.010421753,0.0048294067,0.03265381,0.015625,-0.05291748,0.028900146,0.06518555,0.036987305,-0.0023841858,-0.032104492,0.018127441,0.018951416,-0.026062012,0.030761719,0.010437012,0.021636963,-0.009025574,0.026763916,0.021270752,-0.00869751,-0.00027894974,-0.013305664,0.0038051605,0.040740967,0.026779175,-0.009498596,-0.03805542,-0.08404541,0.051330566,0.033843994,0.032043457,-0.01991272,-0.016296387,-0.045013428,-0.028060913,-0.056274414,0.05404663,0.06933594,-0.004688263,-0.024993896,0.023986816,-0.009674072,-0.032287598,-0.025970459,0.0016584396,-0.017837524,-0.015686035,-0.006038666,-0.06842041,0.01914978,-0.002204895,0.03213501,0.04647827,0.0005106926,-0.043945312,-0.019927979,-0.00724411,0.008056641,-0.040222168,0.01222229,-0.0084991455,0.013961792,0.02734375,0.0036258698,0.010665894,-0.013885498,-0.0033569336,-0.007713318,0.018493652,-0.0020122528,-0.034332275,0.026931763,0.009315491,-0.053619385,0.027053833,-0.012992859,0.054748535,-0.039398193,0.042633057,-0.011276245,0.027893066,0.07147217,-0.0067253113,-0.042022705,0.0473938,0.012290955,0.04095459,0.043151855,0.021453857,-0.022720337,0.0060310364,0.06121826,-0.017593384,0.008766174,0.023345947,0.023529053,0.028503418,-0.005168915,-0.058288574,-0.04849243,0.007083893,-0.022735596,0.019760132,-0.018753052,0.028579712,-0.0017538071,0.02268982,-0.022109985,-0.012893677,-0.03390503,0.00070905685,-0.009468079,0.018585205,-0.01525116,-0.009246826,0.036865234,0.013389587,-0.020751953,-0.030929565,0.046966553,0.031311035,-0.033294678,-0.0055732727,-0.015022278,-0.016723633,-0.028900146,0.020126343,0.0049095154,0.010437012,0.022476196,-0.010971069,0.00047516823,0.027816772,-0.02609253,0.045043945,0.011947632,0.0060806274,-0.04574585,-0.04019165,-0.030181885,-0.04360962,0.006011963,0.0418396,-0.002532959,0.08203125,0.0013742447,-0.024520874,-0.019470215,0.023803711,-0.048736572,-0.00015461445,0.02949524,-0.008659363,-0.029373169,-0.022247314,-0.0021915436,0.012748718,0.02960205,0.014144897,0.017837524,0.09564209,0.056671143,0.010726929,0.010787964,0.019927979,0.026245117,0.007675171,-0.008125305,-0.0390625,0.00086164474,0.017669678,-0.02722168,-0.022537231,-0.07763672,0.0513916,0.0335083,0.06750488,0.025726318,0.011116028,0.0084991455,-0.021560669,0.018600464,-0.044952393,-0.025253296,-0.029846191,-0.03744507,0.0053977966,-0.018814087,0.0025672913,-0.030441284,0.03253174,-0.0011968613,0.023345947,-0.026687622,0.051696777,-0.0039787292,-0.002576828,0.033172607,0.024917603,0.022262573,0.031021118,-0.038848877,0.038116455,-0.0053977966,-0.03479004,-0.017364502,0.04736328,0.0029582977,-0.035064697,-0.076660156,-0.023010254,0.009185791,-0.013648987,-0.05545044,-0.0002758503,-0.008987427,0.046936035,0.018753052,-0.02217102,-0.02166748,-0.005092621,-0.00907135,-0.07385254,-0.011665344,0.0018405914,0.010818481,0.02116394,-0.019760132,0.011413574,0.0017137527,0.01739502,-0.016952515,0.017959595,-0.00484848,0.012130737,-0.027252197,0.03829956,0.010154724,0.023620605,0.025543213,0.051452637,0.025344849,0.035247803,0.050231934,0.017150879,0.014549255,-0.06768799,0.0030059814,-0.065979004,0.00818634,0.023132324,-0.028381348,0.0014181137,-0.00995636,-0.021697998,-0.037628174,0.011833191,-0.03277588,0.0061416626,0.022262573,-0.037597656,-0.04977417,-0.05706787,-0.022445679,-0.00881958,0.061920166,0.020568848,0.007865906,-0.033111572,-0.013641357,0.018417358,0.008872986,0.015182495,-0.012535095,-0.022964478,-0.028305054,-0.0062065125,0.0027236938,0.009239197,0.028137207,0.008895874,0.0011558533,0.004310608,0.017700195,0.011230469,-0.025665283,0.008956909,0.00982666,-0.025848389,0.009666443,-0.012687683,0.036102295,0.0030879974,-0.024154663,-0.05065918,0.02960205,0.00548172,0.02772522,-0.030761719,-0.010261536,-0.0019950867,0.01838684,0.014625549,-0.015640259,0.0008831024,0.0014867783,-0.030441284,-0.08178711,0.037017822,-0.015975952,0.027648926,-0.0018386841,0.005672455,0.012802124,-0.0040283203,-0.00078964233,0.016937256,-0.024429321,-0.011245728,-0.02017212,-0.012031555,-0.027145386,-0.006690979,-0.015426636,0.01914978,-0.010025024,0.00712204,0.0037460327,-0.025497437,0.009124756,0.0051078796,0.0011425018,0.020507812,0.011779785,0.012283325,0.047027588,0.009178162,-0.051879883,0.036102295,-0.006011963,-0.00894928,-0.012924194,0.043121338,0.021636963,-0.016952515,0.018112183,-0.012771606,-0.010673523,-0.041931152,-0.0015983582,0.010749817,0.023788452,0.0049819946,-0.06317139,0.02909851,0.024368286,-0.030899048,-0.021575928,0.023666382,0.011131287,-0.036224365,0.020950317,0.025741577,0.05227661,-0.019485474,0.0067214966,0.0012083054,0.032684326,0.026123047,0.021881104,-0.004749298,0.010421753,-0.020233154,0.030899048,0.00680542,-0.017822266,-0.016281128,0.010871887,0.031158447,0.0068511963,0.010375977,-0.0012359619,-0.01739502,-0.008071899,0.015220642,-0.022155762,0.04144287,0.015731812,0.015350342,-0.0012655258,-0.0056533813,0.042175293,-0.032470703,-0.0037326813,-0.0029392242,0.050842285,0.0016307831,-0.025604248,0.036621094,0.015411377,0.029251099,-0.043029785,-0.013648987,-0.018035889,0.0031433105,-0.032562256,-0.05532837,-0.017944336,0.008270264,0.011116028,-0.0036354065,0.01739502,0.023071289,-0.008071899,-0.002023697,0.015960693,0.024627686,-0.0036773682,-0.009635925,-0.061462402,-0.008369446,-0.012825012,0.0032310486,-0.02722168,0.0012378693,-0.030807495,-0.011184692,-0.0070724487,-0.00831604,0.002122879,-0.011505127,-0.015220642,0.03036499,-0.013870239,0.0050239563,-0.011070251,-0.024459839,-0.0010643005,0.009529114,0.020736694,-0.058044434,0.00667572,-0.008766174,0.0034866333,-0.018737793,0.0107040405,0.016494751,0.013832092,0.010658264,0.040863037,-0.034942627,0.023468018,-0.028045654,0.01940918,-0.02243042,-0.019882202,0.0044898987,-0.01586914,-0.0101623535,0.025924683,0.008155823,-0.0090789795,-0.016525269,-0.023895264,-0.0014705658,-0.0446167,0.03353882,0.011070251,0.04711914,-0.03213501,0.002828598,0.01361084,0.02670288,-0.005809784,-0.014343262,-0.0015125275,0.0013113022,0.02330017,0.015579224,-0.017593384,-0.015388489,-0.015281677,0.0036964417,-0.042633057,-0.03778076,-0.02746582,0.0128479,0.021865845,-0.012413025,-0.025222778,-0.022018433,-0.008224487,-0.011024475,0.0065841675,-0.020309448,0.020050049,0.0042152405,-0.008911133,0.009536743,0.0040512085,-0.026977539,0.030639648,0.025283813,-0.0041389465,-0.019683838,-0.01512146,0.023864746,0.0052871704,0.002040863,-0.02230835,-0.021987915,-0.015388489,-0.07763672,0.00920105,0.016281128,0.027893066,-0.012924194,-0.009269714,-0.044433594,-0.014060974,-0.020065308,-0.0077400208,0.012573242,0.015289307,0.014007568,0.01966858,0.008903503,-0.026977539,-0.011543274,-0.018630981,0.008666992,0.008735657,-0.0031585693,0.003692627,0.038146973,-0.0059165955,-0.03375244,-0.0010471344,0.005138397,0.017913818,-0.027893066,-0.0045928955,0.008026123,0.013252258,-0.018600464,-0.016433716,-0.030807495,-0.0077819824,0.07470703,-0.012016296,-0.01209259,-0.005657196,0.0118637085,0.022399902,0.036895752,-0.042816162,0.0011281967,-0.025894165,0.016647339,-0.017303467,0.014564514,0.006011963,0.031463623,-0.014221191,-0.04095459,-0.0049972534,0.031311035,-0.013648987,-0.072021484,-0.016937256,-0.085998535,-0.011054993,-0.01876831,-0.031402588,0.00762558,-0.007160187,-0.0340271,-0.05996704,0.029251099,0.048065186,0.0005335808,0.018371582,0.0021457672,-0.00075769424,0.029373169,-0.019226074,-0.028823853,0.016418457,-0.030700684,-0.014350891,-0.037353516,0.019500732,-0.019378662,-0.0062561035,0.02947998,0.008514404,0.0057640076,-0.004337311,0.012710571,-0.019577026,0.02230835,-0.017654419,0.0041618347,-0.007926941,-0.008583069,0.03387451,-0.052764893,0.021270752,0.0017385483,0.008735657,0.005207062,0.011734009,0.04257202,-0.037719727,-0.001581192,0.0010728836,0.008132935,0.027145386,-0.011787415,0.0435791,0.014511108,-0.014465332,0.005924225,-0.01928711,-0.018692017,-0.035339355,-0.024887085,0.029022217,-0.002691269,0.02532959,-0.0065612793,0.0041503906,0.0016908646,0.00095939636,0.0032176971,-0.0028133392,0.001964569,-0.018676758,0.00868988,0.008407593,0.028213501,-0.016601562,0.025344849,0.027923584,0.04272461,0.024246216,0.0050354004,0.0039482117,0.014167786,-0.020751953,0.004207611,0.010437012,0.008430481,0.0053482056,0.009292603,0.017425537,-0.03970337,-0.027938843,-0.01739502,-0.0035171509,0.013885498,-0.02947998,-0.0019035339,-0.008720398,0.010604858,-0.012664795,-0.04626465,-0.0030460358,-0.02519226,-0.021774292,-0.01424408,0.0023040771,0.02029419,0.009109497,-0.015487671,0.010887146,-0.001627922,0.04269409,0.002040863,0.012435913,0.02532959,0.056030273,0.016998291,-0.037384033,-0.006706238,-0.0070648193,-0.0051841736,-0.0029525757,-0.015991211,0.009002686,0.033935547,-0.017333984,0.021316528,-0.011009216,0.044067383,-0.010978699,0.0030097961,0.012687683,0.017623901,0.0036678314,0.022644043,-0.027862549,-0.0077323914,-0.011642456,-0.01713562,-0.0029354095,-0.015045166,-0.021209717,0.0019054413,0.004043579,-0.011054993,0.018569946,0.021011353,0.01864624,-0.041534424,0.005634308,0.001364708,-0.030166626,-0.02658081,0.023757935,-0.016571045,-0.008773804,0.0073013306,-0.010848999,0.017074585,-0.012046814,0.029403687,0.0011091232,0.013961792,-0.017044067,-0.02015686,-0.03552246,-0.0005879402,-0.01638794,0.0038604736,-0.00712204,0.0435791,0.016693115,0.030441284,0.028305054,0.023742676,0.0061302185,-0.032592773,-0.03414917,0.01776123,-0.0067634583,0.012748718,-0.022201538,0.047821045,0.06262207,-0.0048179626,0.029251099,0.034423828,0.05154419,-0.002796173,0.009521484,-0.012420654,0.019973755,-0.017745972,0.022888184,-0.00069856644,0.0390625,-0.0068626404,0.013206482,-0.006416321,0.016540527,-0.026931763,0.026565552,0.07147217,0.01689148,-0.0025730133,0.017807007,-0.012016296,-0.028381348,0.0033931732,-0.030258179,0.05380249,0.026123047,0.045959473,0.034973145,0.014701843,-0.02798462,0.027450562,-0.008369446,-0.036895752,0.064819336,0.004623413,-0.0362854,-0.012962341,-0.0007252693,0.023010254,-0.05429077,-0.03152466,0.023788452,-0.013183594,-0.005794525,0.0065307617,0.0029964447,0.0063171387,0.0079193115,0.01864624,0.019424438,-0.018127441,0.02909851,0.022369385,0.014404297,0.00737381,-0.00045084953,0.029937744,-0.028533936,-0.015411377,-0.0022239685,0.019897461,0.006904602,-0.0074501038,0.029144287,-0.0055274963,0.039276123,0.040985107,-0.0209198,0.02268982,0.034973145,0.0026359558,0.001947403,0.045898438,0.01600647,0.02722168,0.02722168,0.037628174,0.03466797,-0.031951904,0.017074585,-0.0067214966,-0.0038871765,-0.008224487,0.0015983582,0.009811401,-0.014045715,0.035827637,-0.00157547,0.0015859604,0.014541626,0.028823853,-0.01763916,0.0062065125,-0.0018663406,-0.0034179688,-0.009765625,-0.008377075,0.016921997,-0.023513794,0.014007568,0.02848816,0.028289795,-0.046417236,0.008720398,0.010253906,-0.019104004,-0.0025863647,0.0069007874,-0.048187256,0.001950264,-0.004425049,-0.023544312,-0.05316162,0.020492554,0.009513855,-0.008041382,0.042755127,0.01398468,0.0003607273,0.0016336441,0.026062012,0.031707764,0.01675415,-0.010108948,-0.009552002,0.016586304,0.036071777,-0.0026760101,-0.0046691895,-0.02986145,0.0011806488,0.0131073,-0.00094127655,-0.0151901245,-0.005542755,-0.022766113,-0.009635925,0.00050115585,0.039154053,0.008468628,0.036956787,-0.006111145,-0.0014667511,0.0051345825,0.0390625,0.0049324036,-0.018295288,-0.021270752,0.031799316,-0.021484375,0.048583984,0.05203247,-0.016479492,0.012573242,0.009063721,-0.029220581,-0.0039596558,-0.018539429,0.015182495,-0.030319214,0.004383087,0.0007815361,0.021469116,-0.026046753,-0.012863159,-0.0035915375,-0.022979736,-0.012016296,-0.013626099,0.0054626465,0.004676819,0.036865234,0.0048103333,0.01889038,-0.027282715,0.051330566,0.0011749268,0.0647583,0.004432678,-0.0048217773,0.04953003,0.021774292,0.02947998,0.013702393,0.040008545,-0.02255249,0.013069153,0.021942139,0.007949829,0.008056641,0.020614624,-0.003282547,0.04159546,-0.021438599,0.042999268,-0.016693115,0.0033283234,0.01525116,-0.007095337,-0.016799927,-0.002029419,-0.011154175,0.004837036,0.050231934,-0.012786865,-0.0098724365,-0.011604309,-0.012397766,0.028701782,-0.016159058,0.0023937225,-0.017486572,-0.020492554,0.020401001,-0.021224976,-0.009971619,0.010169983,0.016494751,-0.03366089,-0.011924744,0.008560181,0.017608643,-0.030288696,0.037506104,0.037231445,0.007534027,-0.0030879974,0.049865723,-0.0047683716,0.025299072,0.00067043304,0.031951904,0.041625977,0.017410278,0.002943039,0.020401001,0.014305115,-0.016296387,0.018997192,0.042144775,-0.0026664734,0.026565552,-0.009628296,-0.024017334,0.012039185,-0.00092315674,-0.018234253,-0.008148193,-0.028701782,-0.020309448,-0.00831604,0.004257202,-0.015563965,0.012748718,-0.026260376,-0.017532349,0.023483276,0.030654907,0.02357483,-0.0340271,-0.00022387505,-0.002691269,0.0070610046,-0.008422852,-0.02079773,-0.008422852,-0.045532227,0.013511658,0.015548706,-0.008377075,0.0013380051,-0.017181396,-0.006008148,0.06402588,0.009757996,-0.007434845,0.012512207,-0.010528564,0.024169922,-0.0037517548,0.0020332336,-0.003118515,-0.009613037,0.00014722347,0.036254883,-0.010574341,-0.018432617,0.025848389,0.009895325,0.010414124,-0.0042533875,0.001080513,0.020431519,-0.011314392,-0.015792847,0.012573242,0.017974854,-0.027420044,-0.034240723,-0.017654419,0.011444092,0.05508423,-0.001540184,-0.018814087,-0.014404297,0.042022705,0.023269653,0.04425049,0.010635376,0.05340576,0.011329651,-0.0064849854,-0.025848389,0.01663208,0.0020561218,-0.015159607,0.013511658,-0.025665283,-0.0054740906,-0.0025196075,0.022247314,-0.009010315,-0.010375977,-0.0047187805,-0.016448975,-0.01965332,0.026687622,-0.02508545,0.02494812,-0.035064697,-0.010215759,0.0052375793,0.0037403107,-0.022415161,-0.03250122,-0.014183044,-0.013267517,-0.0625,0.008773804,-0.01486969,0.011604309,-0.020629883,0.004096985,-0.018753052,0.015701294,-0.01272583,-0.0015211105,-0.005455017,0.015930176,0.008850098,-0.0034179688,0.03692627,-0.015060425,-0.037628174,-0.00066137314,-0.011016846,0.002199173,0.026306152,-0.021072388,0.04257202,0.01777649,0.0006451607,-0.0047683716,0.003730774,-0.0011806488,0.00063991547,-0.048828125,-0.017990112,0.017791748,0.022628784,0.0059318542,-0.003932953,0.03564453,-0.025405884,-0.02645874,0.023071289,0.046020508,-0.0007863045,0.05947876,-0.025405884,0.008705139,-0.018798828,-0.010643005,0.005302429,0.008117676,0.006706238,-0.0019817352,0.008506775,0.009605408,0.03970337,-0.027282715,-0.018310547,0.026382446,0.010574341,-0.014762878,0.028244019,0.020309448,-0.0042762756,-0.02128601,-0.015823364,0.0042152405,0.04055786,0.021575928,-0.001200676,-0.023269653,0.0055656433,-0.005832672,0.007663727,0.031280518,-0.024368286,-0.04537964,-0.0075035095,-0.025726318,0.02519226,-0.012893677,0.01979065,-0.0044937134,0.008987427,-0.032714844,-0.03048706,-0.0044555664,0.02973938,0.02078247,-0.010475159,0.00374794,-0.0035800934,0.0014133453,-0.030883789,-0.0058784485,-0.042999268,-0.027648926,0.006881714,-0.010894775,0.021865845,0.026367188,0.008857727,0.0036067963,0.01828003,0.004081726,0.015365601,0.024536133,-0.009101868,-0.0071754456,0.036590576,0.011734009,-0.010025024,-0.0037460327,-0.0027809143,-0.007331848,0.019058228,0.0070533752,0.008705139,-0.030181885,0.0146102905,0.011604309,0.010261536,0.027252197,-0.0070610046,0.022659302,-0.036621094,-0.010871887,0.022979736,-0.0067214966,0.042053223,-0.008842468,-0.038879395,-0.014152527,-0.012367249,-0.03466797,0.012504578,0.008796692,0.028121948,-0.017349243,0.031707764,-0.03390503,-0.025375366,0.0129852295,0.009025574,-0.011268616,-0.018371582,0.029052734,0.010826111,0.018051147,-0.00076675415,0.0018854141,-0.03665161,-0.007888794,-0.0006790161,-0.014625549,-0.01953125,0.0055999756,0.021362305,0.03378296,0.016433716,0.01914978,0.017745972,0.0038070679,0.037200928,0.017913818,0.045196533,0.014709473,-0.029281616,0.02218628,0.0015773773,-0.022872925,0.0059814453,-0.01424408,0.021011353,-0.030761719,-0.0058784485,-0.0025749207,0.030059814,-0.0099487305,0.017791748,-0.017669678,-0.005592346,-0.04284668,-0.016647339,-0.040496826,0.012374878,0.011604309,0.0011558533,0.026382446,0.0059394836,-0.03817749,0.009399414,0.027572632,-0.0064048767,-0.03793335,-0.018188477,-0.00072431564,0.01991272,0.007713318,0.028961182,-0.024139404,-0.027404785,-0.01096344,0.0042037964,0.00869751,-0.019119263,0.014961243,0.011543274,-0.010505676,-0.021469116,0.025177002,0.0044670105,0.001543045,0.009086609,0.0020141602,0.03173828,0.040863037,-0.013168335,0.036071777,0.021011353,-0.041992188,0.049621582,-0.011253357,0.026626587,-0.018798828,-0.012145996,-0.030532837,-0.02204895,0.010238647,0.0079574585],"createdAt":"2026-04-18T18:39:12.961Z","updatedAt":"2026-04-29T06:33:41.720Z","lastSeenAt":"2026-04-29T06:33:41.720Z","tsv":"'/request':188 '0.02':11,24,95,187 '000':97 '10':41 '16':168 '20':96 '6':103 'Base network API' 'USDC pay-per-call' 'accept':81 'access':163 'account':2,15,32,38,39,151 'account balance API' 'account-balance' 'across':59 'addit':204 'ai/ml':62 'analysi':172 'analyt':61 'api':58,114,162 'application/json':143 'appropri':127 'attach':125 'balanc':3,16,33,152 'base':8,21,75,98,112 'base-network' 'beyond':158 'bodi':211 'broader':51,165 'call':93 'caller':123 'categori':66 'challeng':91 'check':1,14 'commit':120 'connect':199 'cost':94 'data':60 'decim':104 'detail':206 'doc':193 'document':157,191 'embed':175 'endpoint':28,80,150,169,218 'estim':179 'exact':209 'extens':156 'feed':177 'field':215 'finance/web3':63 'function':146 'gas':178 'gate':86 'geocod':180 'header':131 'id':40 'inform':34 'infrastructur':65 'json-response' 'key':115 'limit':117 'list':167 'lowpaymentfee' 'lowpaymentfee.com':30 'micropay':6,19 'micropayment API' 'mime':140 'network':9,22,76 'no-api-key' 'offer':53 'page':192 'paid':105 'part':48 'particular':149 'pay':55 'pay-per-request':54 'payment':90,130,136 'per':12,25,56 'platform':52,166 'point':190 'post':82 'premium':161 'premium API access' 'price':176,189,194 'probe':44 'prompt':201 'proof':137 'protocol':72 'provid':108 'rate':116 'readm':195 'remain':219 'request':13,26,57,83,210 'requir':122 'respons':139,214 'retriev':153 'return':31,196 'schema':212 'sentiment':171 'settl':68 'simpli':124 'span':170 'specif':145 'specifi':37 'summar':174 'technic':205 'text':173 'titl':160 'type':141 'unit':99 'unknown':220 'upfront':119 'url':45 'usdc':78,101 'usdc-settlement' 'use':77 'valid':134 'via':4,17,69 'wallet':110,200 'x':129 'x-payment':128 'x402':5,18,71,89,135 'x402 balance check' 'x402-payment'","prices":[{"id":"b639fb82-9d94-4d87-b5fb-753c2a507068","listingId":"6fcc497d-ded1-4bc2-a1bb-5ec053bb4a44","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/10/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":"2026-04-18T18:39:12.961Z"}],"sources":[{"listingId":"6fcc497d-ded1-4bc2-a1bb-5ec053bb4a44","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/10/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:12.961Z","lastSeenAt":"2026-04-29T06:33:41.720Z"}],"details":{"listingId":"6fcc497d-ded1-4bc2-a1bb-5ec053bb4a44","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/10/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 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/10/balance"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers 16+ endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"The asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 corresponds to USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/10/balance"}],"useCases":["Querying account balance data programmatically with per-request USDC micropayments","Integrating balance checks into agent workflows without managing API keys","Demonstrating x402 protocol payment flows on Base network"],"bestFor":["Developers experimenting with x402 pay-per-request APIs","Agents needing keyless, on-demand account balance lookups","Projects already operating on the Base L2 with USDC"],"notFor":["Users needing detailed API documentation or schema guarantees before integration","High-volume balance polling where per-request fees would accumulate significantly","Users without a Base network wallet or USDC holdings"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:39.546Z"},"updatedAt":"2026-04-29T06:33:41.720Z"}}