{"id":"37ebf778-1298-4912-b11f-e1555e0584ff","shortId":"dvvvsx","kind":"x402","title":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-protocol API marketplace that gates access to a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint at `/api/v1/accounts/177` is listed as \"Premium API Access\" and requires a payment of up to 20,000 base units of USDC (i.e., $0.02) per call. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader platform organizes its endpoints into four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure/Utilities (geocoding, validation, conversion, generation). All listed endpoints share the same $0.02/request pricing. However, the specific endpoint being listed here (`/api/v1/accounts/177`) does not clearly map to any of these documented categories — its \"Premium API Access\" label is generic and its actual functionality is not described in the available documentation.\n\nThe probe confirms the endpoint is live, returning a proper 402 challenge with x402 version 1. Payment is accepted via the \"exact\" scheme to wallet `0x1A2B...85F3` using USDC (`0x8335...2913`) on Base. The maximum timeout is 300 seconds. No OpenAPI schema, detailed docs, or example responses were found in the crawl — the docs, pricing, API, and README pages all rendered only a \"Connect wallet\" prompt with no substantive content.","tags":[],"capabilities":["x402-payment","usdc-base","per-request-micropayment","json-api","no-api-key","post-method"],"categories":["api-marketplace","payments"],"synonyms":["x402 API","micropayment API","pay-per-call API","Base USDC API","lowpaymentfee","402 payment endpoint"],"warnings":["The specific endpoint /api/v1/accounts/177 has no documented functionality — 'Premium API Access' is a generic label with no explanation of inputs or outputs.","No OpenAPI schema, request/response examples, or detailed documentation available.","Docs, pricing, API, and README pages all render only 'Connect wallet' with no substantive content — documentation may require wallet authentication to view.","The endpoint path suggests account-specific data but its purpose is unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/177","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/177","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 402 challenge, confirming pricing and payment details. However, the specific endpoint's functionality is entirely undocumented — 'Premium API Access' is a generic label with no schema, no examples, and no description of what data it returns. The docs and other pages rendered only 'Connect wallet' with no useful content.","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":"2026-04-19T01:35:59.068Z","embedding":[-0.030426025,-0.027389526,0.03857422,0.010848999,0.016845703,-0.022964478,-0.02420044,0.03262329,0.05718994,-0.06707764,0.041046143,-0.046173096,-0.017288208,-0.026565552,-0.025466919,0.02204895,-0.011070251,0.0029392242,-0.057617188,0.04626465,0.036346436,-0.031982422,-0.012428284,0.04598999,-0.0030269623,-0.006427765,0.0029716492,-0.013450623,-0.020965576,-0.046905518,0.03353882,-0.028259277,-0.023712158,0.019729614,-0.01586914,-0.03515625,0.0024795532,0.034973145,0.028579712,-0.008010864,-0.0115356445,-0.05090332,0.01776123,-0.0014352798,-0.05279541,-0.0035858154,0.008682251,-0.030273438,-0.02809143,0.0026893616,-0.017349243,-0.0064888,-0.014183044,0.008468628,0.013153076,0.010643005,0.000043213367,-0.011962891,0.023925781,0.013999939,-0.0036010742,-0.049041748,-0.013420105,0.009254456,0.015174866,0.04446411,-0.002773285,0.03982544,0.021987915,0.046295166,0.023513794,0.055786133,0.02796936,-0.0017051697,0.004032135,-0.011238098,-0.000936985,0.04248047,-0.021896362,-0.015853882,-0.022247314,-0.01727295,-0.046020508,-0.015197754,-0.022399902,-0.06011963,-0.015701294,0.014038086,-0.02772522,0.032104492,-0.07720947,-0.0021419525,-0.007499695,0.0062828064,0.0034484863,-0.020584106,-0.02558899,0.0014324188,0.0034255981,0.014831543,0.01687622,-0.03543091,0.025680542,0.008018494,0.04321289,0.05657959,0.02482605,0.02609253,-0.0026950836,-0.018585205,-0.017089844,0.021118164,-0.014846802,-0.0044136047,0.012397766,0.010070801,-0.02003479,0.030715942,-0.03024292,0.019989014,-0.054870605,0.04949951,0.013145447,-0.017471313,0.0029277802,-0.041229248,-0.008377075,0.008522034,-0.036346436,-0.0072364807,0.013244629,0.0079422,0.026916504,-0.012321472,-0.045410156,0.02104187,-0.011520386,-0.02809143,-0.03955078,-0.015716553,0.029342651,-0.037384033,0.026519775,0.034118652,-0.083862305,-0.0066986084,-0.052459717,0.024810791,-0.023727417,0.0014657974,0.0124053955,0.0074501038,-0.028045654,-0.012840271,-0.008880615,-0.041748047,-0.004470825,0.046020508,-0.015068054,0.03225708,-0.006122589,0.029525757,0.028411865,0.0036640167,0.01626587,0.042816162,-0.019500732,-0.090270996,-0.09838867,-0.03137207,0.006061554,0.0015964508,-0.03527832,-0.0066986084,-0.017120361,-0.07659912,-0.022476196,-0.009918213,0.0021877289,-0.048797607,-0.0022220612,-0.034576416,0.008621216,-0.012512207,-0.052612305,-0.0063705444,-0.021148682,0.048095703,0.027542114,0.0018672943,0.033966064,-0.0078125,0.061553955,0.023040771,-0.018478394,-0.04244995,0.0073432922,-0.0046958923,0.023162842,0.0041122437,0.005191803,-0.043395996,0.039001465,0.06549072,0.00957489,-0.028076172,0.0077056885,-0.049224854,-0.046661377,-0.025115967,0.021453857,0.010658264,-0.021881104,0.021118164,-0.030319214,-0.038085938,0.02418518,0.0039253235,0.023925781,0.061798096,-0.01524353,0.021270752,0.007698059,0.026855469,-0.0513916,0.04663086,0.037017822,0.025741577,-0.02355957,-0.014945984,0.010025024,0.026321411,-0.032592773,0.009681702,-0.0178833,0.029403687,0.0002644062,0.010818481,0.019882202,-0.020050049,-0.02128601,-0.02330017,-0.008369446,0.023391724,0.008117676,-0.03164673,-0.032318115,-0.07751465,0.029708862,0.051727295,0.013679504,0.0029277802,0.0005555153,-0.04196167,-0.0033111572,-0.06549072,0.04711914,0.064331055,-0.0035495758,-0.02444458,0.036621094,-0.008399963,-0.04034424,0.005302429,0.007282257,-0.020492554,-0.013648987,0.012214661,-0.048614502,-0.00088214874,0.018920898,0.027069092,0.04937744,-0.024810791,-0.054718018,-0.026367188,0.0022583008,0.012107849,-0.04348755,-0.0047340393,-0.0028800964,0.02279663,0.03753662,0.012557983,0.020004272,0.007881165,0.0107803345,-0.01209259,0.01109314,-0.018676758,-0.039764404,0.01109314,0.010543823,-0.06512451,0.0023651123,-0.006374359,0.06781006,-0.042510986,0.0289917,-0.023101807,0.027389526,0.050109863,-0.0043296814,-0.042419434,0.0072250366,0.045074463,0.026504517,0.03237915,0.01776123,-0.004638672,-0.014846802,0.053863525,-0.029815674,-0.0053596497,0.0154418945,0.022720337,0.039978027,0.010818481,-0.056732178,-0.034301758,-0.017562866,-0.02999878,0.021575928,-0.023788452,0.039154053,-0.008483887,0.02772522,-0.021087646,0.0031490326,-0.04333496,0.014854431,-0.015426636,-0.003900528,-0.0036582947,-0.027999878,0.0050697327,0.01737976,-0.009407043,-0.0033416748,0.058898926,0.018005371,-0.01448822,-0.027053833,-0.017807007,-0.033233643,-0.0020885468,0.014595032,0.016311646,0.0231781,0.03050232,-0.027648926,-0.0021953583,0.023910522,0.0044403076,0.03677368,-0.00995636,0.01739502,-0.061767578,-0.05709839,-0.015777588,-0.023834229,0.019622803,0.014167786,0.012878418,0.051940918,-0.00056934357,-0.019454956,-0.05709839,0.022994995,-0.04537964,-0.0063438416,0.039642334,-0.022338867,-0.032958984,0.005645752,0.0059661865,0.002614975,0.036071777,0.025772095,0.022750854,0.08709717,0.03869629,0.020889282,0.007434845,0.016494751,0.03024292,0.003982544,-0.007381439,-0.035369873,-0.012458801,0.051574707,-0.02609253,-0.020980835,-0.07965088,0.05517578,0.027832031,0.09503174,0.0071907043,0.0023956299,0.03781128,-0.016998291,0.017501831,-0.031585693,-0.021652222,-0.01852417,-0.047790527,0.029815674,0.0013332367,-0.010894775,-0.034362793,0.025161743,0.00415802,0.019165039,-0.02432251,0.06011963,-0.0096206665,-0.024032593,0.005340576,0.011306763,0.048736572,0.044281006,-0.057800293,0.014007568,0.025283813,-0.019958496,-0.0047798157,0.04296875,0.0005788803,-0.0051841736,-0.06390381,-0.031204224,-0.012268066,-0.016784668,-0.057891846,-0.004219055,-0.00617218,0.027175903,0.010978699,-0.016052246,-0.01159668,-0.008369446,-0.017486572,-0.051208496,-0.024490356,-0.037963867,-0.0032997131,0.030776978,-0.047027588,-0.00086545944,-0.0077590942,-0.0070724487,-0.010696411,0.010353088,-0.006839752,0.010368347,-0.047210693,0.037109375,0.0020275116,0.008758545,0.0152282715,0.037384033,0.03213501,0.008377075,0.051208496,0.021102905,-0.011627197,-0.058410645,0.027572632,-0.05718994,-0.007534027,0.013534546,-0.016815186,0.0009937286,-0.021255493,-0.031585693,-0.014526367,0.015930176,-0.022232056,0.009689331,0.02470398,-0.04171753,-0.030883789,-0.04586792,-0.020004272,-0.0012798309,0.06640625,0.011932373,0.011360168,-0.05331421,-0.00063705444,0.00018906593,0.0026359558,0.02722168,-0.015159607,-0.004322052,-0.015045166,-0.00699234,-0.028182983,-0.02394104,0.031982422,-0.008903503,-0.011528015,0.022140503,-0.006149292,-0.004535675,-0.0053100586,0.0011854172,0.008178711,-0.023590088,-0.020629883,-0.013290405,0.031280518,0.00055885315,0.0070114136,-0.042388916,0.05340576,0.017303467,0.050598145,-0.04208374,0.010246277,-0.0025196075,0.014846802,0.01928711,-0.007965088,-0.010307312,0.000998497,-0.04156494,-0.086242676,0.039154053,-0.0063323975,0.02267456,0.005744934,0.006111145,0.029403687,-0.020462036,0.016723633,0.012252808,-0.02670288,-0.010040283,-0.032165527,-0.023498535,-0.018859863,0.00065612793,-0.019180298,0.011459351,-0.02041626,0.009796143,-0.019210815,-0.02067566,0.03326416,0.0014533997,-0.013954163,0.037506104,0.011581421,0.016494751,0.047973633,0.015716553,-0.03250122,0.013313293,-0.004005432,-0.0046157837,-0.0032234192,0.053375244,0.02482605,-0.010520935,-0.014289856,-0.0020637512,-0.01260376,-0.019515991,-0.0014648438,0.0149002075,0.020889282,0.0029735565,-0.022781372,0.029373169,0.020050049,-0.02670288,-0.009819031,0.025604248,0.017288208,-0.04611206,0.038848877,0.03829956,0.0635376,-0.030212402,0.0016746521,-0.005882263,0.04071045,0.023391724,0.0077056885,-0.02015686,0.008735657,-0.024291992,0.019226074,0.00390625,-0.019805908,0.011566162,0.009422302,0.016464233,0.030700684,0.021987915,-0.029022217,-0.03161621,0.008758545,-0.0059318542,-0.021316528,0.041992188,0.01625061,0.024780273,-0.024291992,0.028808594,0.019927979,-0.029052734,-0.00818634,-0.013435364,0.04296875,-0.012687683,-0.012077332,0.020462036,0.0073547363,0.02218628,-0.051971436,-0.0102005005,0.011489868,0.006866455,-0.023834229,-0.054595947,-0.02796936,-0.010360718,0.028366089,-0.0021800995,0.0004734993,0.025360107,0.0025730133,-0.0011129379,0.016723633,0.007499695,0.0048561096,-0.009994507,-0.051635742,-0.017532349,-0.00724411,0.006713867,-0.024169922,0.0236969,-0.019119263,-0.025436401,0.0023956299,-0.011795044,-0.003929138,-0.009010315,0.0023097992,0.029815674,0.0070228577,0.015174866,-0.020385742,-0.026397705,-0.0064201355,0.007801056,0.026489258,-0.037597656,0.028869629,0.0001667738,-0.0030097961,-0.014884949,0.010398865,0.021591187,0.026611328,0.003227234,0.0418396,-0.02822876,0.024520874,-0.019882202,0.00041913986,-0.00018811226,-0.039916992,-0.007171631,-0.024490356,-0.021362305,0.032714844,-0.02368164,-0.0020122528,-0.021530151,-0.031341553,-0.004119873,-0.06286621,0.024047852,0.02960205,0.038757324,-0.035949707,0.0012311935,0.02192688,0.004501343,-0.018341064,-0.0026988983,-0.014076233,0.014129639,0.018539429,-0.0041618347,-0.025497437,-0.022079468,-0.014183044,0.0063476562,-0.048858643,-0.04675293,-0.011505127,0.0032634735,0.001449585,-0.0014152527,-0.009841919,-0.03451538,-0.009963989,-0.0335083,0.012504578,-0.010643005,0.019882202,0.0062065125,-0.028442383,0.0135269165,0.024017334,-0.023620605,0.023986816,0.007785797,-0.0051460266,-0.045562744,0.004257202,0.03692627,0.01436615,-0.0004708767,-0.038391113,-0.0064849854,-0.020507812,-0.055725098,-0.0016746521,-0.015670776,0.0112838745,-0.009651184,-0.0024032593,-0.046691895,0.0012674332,-0.02178955,0.0020561218,0.005645752,0.011558533,-0.007820129,0.012870789,0.013702393,-0.014297485,-0.022338867,-0.024505615,0.007843018,0.01109314,-0.0037403107,0.021484375,0.024383545,0.0066223145,-0.017822266,0.0102005005,0.004840851,0.02758789,-0.013717651,0.0007991791,-0.01890564,0.013793945,-0.009857178,-0.006149292,-0.040039062,0.00055265427,0.068725586,0.009803772,-0.0012922287,-0.006164551,-0.011878967,0.020690918,0.045196533,-0.04525757,-0.00856781,-0.034423828,0.031036377,-0.010627747,0.014831543,0.0022449493,0.017974854,-0.02508545,-0.050567627,-0.0072631836,0.012741089,0.0028324127,-0.060394287,-0.008369446,-0.056671143,-0.0047569275,-0.018081665,-0.011199951,0.00011700392,-0.0021800995,-0.024475098,-0.09991455,0.014099121,0.052825928,0.004005432,0.018417358,-0.00944519,0.0317688,0.016815186,-0.034820557,-0.011192322,0.013969421,-0.023330688,-0.016281128,-0.03390503,0.028366089,-0.0053520203,-0.02909851,0.030273438,0.014831543,0.031677246,-0.01096344,0.020233154,-0.021240234,0.0059509277,0.0003015995,0.014671326,-0.00756073,-0.015449524,0.028579712,-0.061798096,0.03265381,0.012641907,0.019104004,0.007396698,0.025619507,0.034851074,-0.05215454,-0.012817383,0.03768921,0.0009493828,0.020812988,-0.019744873,0.034362793,0.009559631,-0.0051612854,0.015197754,-0.01626587,-0.026641846,-0.041381836,-0.029205322,0.023468018,0.014045715,0.023483276,-0.0048294067,-0.0010232925,0.030319214,0.00137043,-0.0043525696,-0.03262329,-0.0071029663,-0.017471313,0.004863739,0.017700195,-0.002243042,0.014579773,0.026870728,0.031555176,0.036132812,0.014595032,-0.0050964355,-0.0035591125,0.021194458,-0.020324707,-0.0030765533,0.017501831,0.020324707,0.013755798,0.015174866,0.020965576,-0.0435791,-0.024627686,-0.014289856,-0.015548706,0.003578186,-0.01461792,-0.014656067,-0.005054474,0.0042686462,-0.01008606,-0.04083252,-0.0018339157,-0.040527344,-0.028625488,0.00033259392,-0.019943237,0.021514893,0.008201599,-0.0023097992,0.010688782,0.0045776367,0.05340576,0.00019466877,-0.009643555,0.044555664,0.033172607,0.01576233,-0.020980835,-0.006767273,-0.014038086,-0.005088806,0.004486084,-0.015991211,0.011634827,0.037353516,-0.012359619,0.010566711,-0.0020275116,0.020553589,-0.0046958923,0.0072021484,-0.00894165,0.027755737,-0.013916016,0.037109375,-0.041412354,0.010292053,0.024475098,0.004421234,-0.01864624,-0.013084412,-0.030670166,0.012527466,0.0062332153,-0.006965637,0.034851074,0.0025310516,0.022583008,-0.03286743,-0.0211792,-0.00036239624,-0.017745972,-0.030349731,0.018051147,-0.0129852295,0.0031986237,0.010971069,-0.037506104,0.025161743,-0.039611816,0.01940918,0.015098572,-0.0004887581,-0.011421204,-0.021621704,-0.012084961,0.0019168854,-0.017868042,0.006839752,-0.0035877228,0.041809082,0.03387451,0.026672363,0.028808594,0.017303467,0.0030269623,-0.042907715,-0.023956299,0.0049743652,-0.029586792,0.015548706,-0.03250122,0.049072266,0.043426514,0.0057373047,0.032836914,0.03955078,0.029846191,-0.005592346,0.0077667236,-0.009635925,0.030166626,-0.0129470825,0.01914978,-0.010620117,0.048828125,-0.029556274,0.01776123,-0.00007200241,0.011009216,-0.017364502,0.027801514,0.0791626,0.034332275,0.0018491745,0.018859863,-0.0013399124,-0.009979248,-0.0059318542,-0.02532959,0.047454834,0.0007529259,0.042785645,0.0413208,0.009437561,-0.0073890686,0.040252686,-0.017364502,-0.032318115,0.047790527,0.019332886,-0.020584106,-0.0082473755,0.0017595291,0.0017280579,-0.058410645,-0.011695862,0.02204895,0.001581192,0.0074539185,-0.012130737,-0.0005412102,-0.008300781,0.008331299,0.02255249,0.012794495,0.00093126297,0.03164673,0.016601562,-0.0044403076,0.028793335,0.011749268,0.018676758,-0.031707764,-0.017990112,0.004547119,0.016937256,-0.00060367584,-0.005443573,0.023712158,0.011787415,0.05847168,0.029052734,-0.024215698,-0.00793457,0.026641846,0.021575928,0.012390137,0.05029297,0.03378296,0.013282776,0.045410156,0.03463745,0.017730713,-0.032958984,0.011245728,0.0011472702,0.011146545,-0.0069389343,-0.013168335,0.013786316,-0.013366699,0.03010559,0.001914978,-0.00422287,0.018829346,0.013137817,-0.015838623,0.0071983337,0.0048828125,0.019088745,-0.008377075,0.0016269684,0.014091492,-0.026657104,0.01737976,0.009086609,0.025375366,-0.03125,0.031097412,0.012535095,-0.025405884,-0.002735138,0.01739502,-0.04345703,0.00004541874,-0.0017709732,-0.018554688,-0.051696777,0.004234314,0.022659302,-0.015159607,0.019180298,0.010818481,-0.0024604797,0.00014126301,0.021194458,0.008384705,-0.0022029877,-0.014564514,-0.02468872,0.021530151,0.040924072,0.0013055801,-0.006866455,-0.021469116,0.0005364418,0.010093689,-0.0064468384,-0.0021572113,0.004966736,-0.013305664,-0.0390625,0.0070724487,0.034973145,0.020050049,0.0309906,-0.020812988,-0.0051193237,0.0026569366,0.030029297,0.009590149,0.002035141,-0.0074005127,0.03326416,-0.01499939,0.048583984,0.033203125,0.0018939972,0.021087646,-0.022750854,-0.013023376,-0.0041275024,-0.018218994,0.02192688,-0.03375244,0.011795044,-0.0039863586,0.024887085,-0.0132369995,-0.041503906,0.01184082,-0.0206604,-0.02218628,-0.03152466,0.01676941,0.0058898926,0.030593872,0.033966064,0.02809143,-0.023162842,0.066345215,-0.020187378,0.05203247,-0.0070495605,-0.011451721,0.061553955,0.03869629,0.04168701,0.012390137,0.0146484375,-0.014831543,0.008636475,0.03652954,0.031066895,0.0211792,0.00630188,-0.020996094,0.03213501,-0.009643555,0.043548584,-0.004940033,0.0060653687,0.008743286,-0.012191772,-0.003047943,0.00034046173,-0.0053977966,0.010902405,0.062286377,-0.029373169,-0.011024475,-0.024215698,-0.008201599,0.02758789,-0.020584106,0.0070991516,-0.0060272217,-0.012245178,0.007598877,-0.016586304,-0.012794495,0.010391235,0.02859497,-0.041259766,-0.02319336,0.01473999,0.020935059,-0.037750244,0.037200928,0.022415161,-0.007926941,0.011779785,0.035125732,-0.0049324036,0.031677246,-0.009407043,0.03765869,0.05078125,0.013046265,-0.012641907,0.0052337646,0.003856659,-0.014633179,0.012626648,0.02444458,-0.007873535,-0.0040893555,0.00919342,-0.008758545,0.011230469,0.018035889,-0.017745972,0.0053138733,-0.017333984,-0.004512787,-0.0022277832,0.0112838745,-0.0057792664,0.006958008,-0.0035190582,-0.0072288513,0.0149383545,0.032714844,0.014549255,-0.038757324,0.0012950897,0.026306152,0.014976501,-0.023468018,-0.0068511963,-0.008613586,-0.037475586,0.010231018,0.039642334,0.010940552,0.007381439,-0.026016235,-0.0023880005,0.0284729,0.0134887695,0.012619019,0.01184082,-0.006198883,0.009140015,-0.011985779,-0.0029907227,-0.0023765564,-0.015014648,0.01550293,0.018966675,-0.018096924,-0.008430481,0.030792236,0.01134491,-0.0002617836,-0.0007209778,-0.0034160614,0.03137207,-0.0027866364,-0.007144928,0.0009202957,0.002811432,-0.011642456,-0.011253357,-0.015716553,0.022460938,0.05404663,-0.020050049,-0.014511108,0.007522583,0.016479492,0.02432251,0.032836914,0.0042800903,0.03704834,0.024032593,-0.010566711,-0.023925781,0.0075149536,-0.0031032562,-0.027404785,0.018676758,-0.015670776,-0.024108887,0.015411377,0.00078344345,0.0049438477,-0.021652222,-0.017715454,-0.002822876,-0.008087158,0.026687622,-0.016815186,0.00699234,-0.03555298,-0.01486969,0.021820068,-0.002773285,-0.042633057,-0.018478394,-0.00028061867,-0.01424408,-0.057159424,0.01576233,-0.026031494,0.0067253113,-0.0178833,0.002506256,0.0032634735,0.029769897,-0.00012516975,0.009048462,0.018722534,0.031341553,0.013809204,0.011459351,0.0385437,-0.019241333,-0.033569336,-0.012901306,0.00056791306,-0.014854431,0.006778717,-0.018539429,0.04043579,0.00390625,-0.018356323,0.0001348257,-0.018295288,-0.0026607513,-0.00944519,-0.021743774,-0.02557373,0.02557373,0.021530151,-0.0012149811,-0.005710602,0.03237915,-0.021759033,-0.02709961,0.018737793,0.039764404,0.0055770874,0.046447754,-0.01725769,-0.01108551,-0.027282715,0.010665894,-0.0178833,0.0067977905,0.009223938,-0.006690979,-0.008842468,0.0025539398,0.022369385,-0.013954163,-0.013404846,0.02407837,0.012611389,-0.019042969,0.04724121,0.017623901,0.0015134811,-0.026306152,-0.017059326,0.013450623,0.046875,0.0115356445,0.008735657,-0.010574341,0.015625,-0.014259338,0.0004940033,0.013572693,-0.016906738,-0.037994385,-0.014511108,-0.019332886,0.023422241,0.0006327629,0.0076942444,-0.009841919,0.012207031,-0.018875122,-0.0309906,-0.028335571,0.03274536,0.013145447,-0.017654419,-0.010955811,0.0073623657,0.018218994,-0.034240723,0.0050964355,-0.046783447,-0.03555298,-0.014633179,-0.024673462,0.018173218,0.0029087067,0.00053691864,0.0067481995,0.0011777878,-0.0009813309,0.013442993,0.02758789,-0.0109939575,-0.002248764,0.022064209,0.010772705,-0.016677856,0.009849548,-0.012145996,-0.0076141357,0.004337311,-0.01461792,0.016815186,-0.029312134,0.031341553,0.0024280548,-0.005088806,0.029556274,0.00070524216,0.01826477,-0.02619934,-0.014884949,-0.0030117035,-0.0058670044,0.03955078,-0.016998291,-0.021987915,0.0053520203,-0.017089844,-0.035705566,0.011474609,0.0181427,0.02659607,-0.009979248,0.044799805,-0.016967773,-0.0030021667,0.01373291,0.009887695,-0.013702393,-0.00289917,0.032958984,-0.0036315918,0.0121154785,-0.0025959015,-0.00308609,-0.03314209,-0.0065231323,0.008239746,-0.011642456,-0.017364502,0.016159058,0.010566711,0.041168213,-0.0014381409,0.016479492,0.026550293,0.0063667297,0.025787354,0.0011444092,0.031463623,0.012397766,-0.024337769,0.008522034,0.011512756,-0.022903442,0.008270264,-0.01033783,0.013969421,-0.032348633,0.007888794,0.0026283264,0.02470398,-0.023208618,0.010055542,-0.01461792,0.0030117035,-0.045959473,-0.00021064281,-0.04043579,0.0038032532,0.050628662,0.018569946,0.015571594,0.0009031296,-0.02128601,0.03616333,0.05126953,0.0045204163,-0.03466797,-0.020004272,-0.0046653748,0.0039863586,-0.009498596,0.013084412,-0.018310547,-0.011390686,-0.01272583,-0.0049934387,-0.0054016113,-0.01928711,0.03439331,0.012687683,-0.0025997162,-0.012680054,0.029342651,-0.0066986084,-0.000808239,-0.0015411377,-0.004497528,0.032196045,0.04525757,-0.01689148,0.017715454,0.022354126,-0.03353882,0.05053711,-0.0020923615,0.025650024,-0.021850586,0.0028018951,-0.033172607,-0.017333984,0.000052273273,0.0062789917],"createdAt":"2026-04-18T18:41:30.716Z","updatedAt":"2026-04-23T06:04:01.473Z","lastSeenAt":"2026-04-23T06:04:01.473Z","tsv":"'/api/v1/accounts/177':67,174 '/request':17,34,165 '0.02':16,33,88,164 '000':82 '0x1a2b':228 '0x8335':232 '1':218 '20':81 '2913':233 '300':240 '402':213 '402 payment endpoint' '85f3':229 'Base USDC API' 'accept':221 'access':45,73,102,188 'actual':194 'advertis':93 'ai':10,27,133 'analysi':137 'analyt':127 'api':4,21,41,72,95,187,258 'attach':105 'avail':201 'base':7,24,61,83,235 'behind':51 'broader':118 'call':90 'caller':103 'categori':125,184 'challeng':214 'classif':140 'clear':177 'confirm':205 'connect':266 'content':272 'convers':156 'crawl':254 'data':9,26,126,130 'describ':198 'detail':245 'doc':246,256 'document':183,202 'embed':141 'endpoint':14,31,50,65,122,160,170,207 'estim':151 'exact':224 'exampl':248 'exchang':146 'export':131 'feed':145 'financ':11,28,142 'found':251 'four':124 'function':195 'gas':150 'gate':3,20,44 'generat':157 'generic':191 'geocod':154 'header':110 'howev':167 'i.e':87 'infrastructure/utilities':153 'insight':132 'instant':101 'json-api' 'key':96 'label':189 'learn':135 'limit':99 'list':69,159,172 'live':209 'lowpaymentfee' 'lowpaymentfee.com':35 'machin':134 'map':178 'marketplac':42 'maximum':237 'metric':128 'micropay':55 'micropayment API' 'network':62 'no-api-key' 'offer':8,25 'openapi':243 'organ':120 'page':261 'pay-per-call API' 'payment':77,109,115,219 'per':53,89 'per-request':52 'per-request-micropayment' 'platform':5,22,92,119 'post-method' 'premium':71,186 'price':144,166,257 'probe':204 'prompt':268 'proof':116 'proper':212 'protocol':40 'quot':149 'rate':98,147 'readm':260 'render':263 'report':129 'request':54 'requir':75 'respons':249 'return':210 'schema':244 'scheme':225 'second':241 'sentiment':136 'settl':56 'share':161 'simpli':104 'specif':64,169 'substant':271 'summar':139 'text':138 'timeout':238 'token':148 'unit':84 'usdc':58,86,231 'usdc-base' 'use':230 'util':13,30 'valid':113,155 'varieti':48 'version':217 'via':222 'wallet':227,267 'web3':143 'x':108 'x-payment':107 'x402':2,19,39,114,216 'x402 API' 'x402-gated':1,18 'x402-payment' 'x402-protocol':38","prices":[{"id":"6c0047bb-b89e-45f7-9dc0-786943366513","listingId":"37ebf778-1298-4912-b11f-e1555e0584ff","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/177","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:30.716Z"}],"sources":[{"listingId":"37ebf778-1298-4912-b11f-e1555e0584ff","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/177","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:30.716Z","lastSeenAt":"2026-04-23T06:04:01.473Z"}],"details":{"listingId":"37ebf778-1298-4912-b11f-e1555e0584ff","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/177 \\\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 x402 version 1, accepting USDC on Base with maxAmountRequired of 20000 base units ($0.02).","source_url":"https://lowpaymentfee.com/api/v1/accounts/177"},{"claim":"The platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories, all priced at $0.02/request.","source_url":"https://lowpaymentfee.com"},{"claim":"The platform advertises no API keys, no rate limits, instant access, and Base network settlement.","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API data with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to utility or data services"],"bestFor":["Developers wanting keyless, pay-per-call API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","Anyone without a Base-compatible USDC wallet","High-volume consumers who prefer flat-rate or subscription pricing"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:33.011Z"},"updatedAt":"2026-04-23T06:04:01.473Z"}}