{"id":"7bbd7980-4fe4-421f-af73-4213af559076","shortId":"f82wrc","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a variety of endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints are pay-per-request at $0.02 each, settled in USDC on the Base network. No API keys, accounts, or rate limits are required — callers simply attach an x402 payment header to each request.\n\nThe specific endpoint at `/api/v1/payments/64` is listed as \"Premium API Access\" and returns a 402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The platform advertises categories including 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 (geocoding, validation, conversion, generation).\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed documentation for any endpoint. The x402 challenge is live and well-formed, confirming the endpoint is operational, but the lack of documentation makes it difficult to know what request body to send or what response to expect from this particular endpoint.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","no-api-key","no-rate-limits","data-analytics","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","geocoding"],"categories":["api-platform","llm","finance","geo"],"synonyms":["low payment fee","x402 api","pay per call api","micropayment api","usdc api","base network api","402 payment api","crypto api access"],"warnings":["Documentation pages (/docs, /api, /pricing, /README) all render only 'Connect wallet' with no usable content","No OpenAPI or schema available — request and response formats are unknown","The purpose and expected input/output of /api/v1/payments/64 specifically is unclear; it may be a generic or demo endpoint","The platform lists many endpoint categories but none have documented schemas or examples"],"endpointUrl":"https://lowpaymentfee.com/api/v1/payments/64","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/payments/64","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. No OpenAPI schema, no request/response examples, and the specific purpose of the /api/v1/payments/64 endpoint beyond 'Premium API Access' is unknown.","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":"2026-04-19T07:18:40.598Z","embedding":[-0.022781372,-0.0309906,0.037628174,0.011962891,0.013000488,-0.03152466,-0.015274048,0.01600647,0.06561279,-0.060943604,0.033355713,-0.053375244,-0.036224365,-0.04058838,-0.01084137,0.016845703,-0.0032043457,0.004928589,-0.029296875,0.030776978,0.028778076,-0.008964539,-0.031921387,0.024917603,-0.0022029877,-0.018096924,-0.0038337708,0.0035705566,-0.021072388,-0.04336548,0.038116455,-0.02859497,-0.007701874,0.0059432983,-0.0040740967,-0.0074424744,-0.0036087036,0.039031982,0.019882202,-0.0020141602,-0.0029907227,-0.065979004,0.0070152283,-0.020385742,-0.061187744,-0.01096344,0.016662598,-0.022232056,0.005176544,-0.009254456,-0.043304443,0.008369446,-0.009094238,-0.0033283234,0.008811951,0.019439697,-0.006336212,-0.009971619,0.01007843,0.014701843,0.0005927086,-0.051330566,-0.023666382,-0.011680603,0.012886047,0.05795288,-0.0011873245,0.05432129,0.0049552917,0.06982422,0.033935547,0.04815674,0.028778076,0.011299133,0.006126404,-0.0073547363,-0.015975952,0.054473877,0.00039052963,-0.03604126,-0.017532349,-0.015090942,-0.052703857,-0.0076560974,-0.0076026917,-0.051330566,-0.021591187,0.026443481,-0.022201538,0.031066895,-0.06915283,0.0044059753,-0.01576233,0.0005531311,0.00349617,-0.015670776,-0.0011644363,0.021835327,0.00025582314,0.0128479,-0.010269165,-0.038879395,0.014213562,0.014701843,0.036193848,0.054351807,0.02217102,0.019485474,0.0128479,-0.008125305,-0.028381348,0.0022010803,-0.005821228,-0.021774292,0.009307861,0.005420685,-0.014816284,0.017852783,-0.028305054,0.01953125,-0.040161133,0.05001831,0.008377075,0.0072402954,0.006088257,-0.05340576,-0.00642395,0.012176514,-0.030044556,-0.0059776306,0.014556885,0.014152527,0.028671265,-0.014060974,-0.036376953,0.018447876,-0.022491455,0.00012600422,-0.051483154,-0.043792725,0.037628174,-0.028640747,0.020401001,0.035583496,-0.09283447,-0.016052246,-0.040618896,0.003786087,-0.021133423,-0.015060425,0.008598328,0.03012085,-0.012504578,-0.017456055,-0.019714355,-0.032592773,-0.011184692,0.037597656,-0.01109314,0.040496826,-0.022628784,0.031341553,0.019195557,0.00592041,0.0085372925,0.03314209,0.0024871826,-0.079589844,-0.078186035,-0.023361206,0.0031261444,-0.022949219,-0.023803711,0.010917664,-0.0007147789,-0.07727051,-0.008590698,-0.009475708,-0.006095886,-0.04147339,-0.008163452,-0.03491211,0.008094788,-0.0032138824,-0.053222656,-0.022628784,-0.02684021,0.05557251,0.031433105,0.033172607,0.019744873,-0.0027656555,0.06500244,0.019973755,-0.008506775,-0.013809204,0.028640747,-0.024810791,0.022140503,-0.0067634583,0.02519226,-0.02911377,0.03338623,0.06628418,0.005592346,-0.035888672,-0.020462036,-0.05609131,-0.052886963,-0.036895752,0.018478394,-0.0028839111,0.004386902,0.037597656,-0.034973145,-0.024002075,0.0025577545,0.015899658,0.017547607,0.06518555,0.012565613,-0.0030765533,0.037628174,0.017288208,-0.05529785,0.03741455,0.031143188,0.013671875,-0.021499634,-0.039794922,0.036895752,0.03781128,-0.037384033,0.01763916,-0.019699097,0.021987915,-0.00969696,0.003446579,0.010910034,-0.002981186,-0.022598267,-0.025268555,-0.02357483,0.024353027,0.01007843,-0.024505615,-0.033966064,-0.0736084,0.04284668,0.027496338,0.04208374,0.000012874603,0.0054740906,-0.030212402,-0.023635864,-0.076416016,0.061523438,0.074523926,-0.0028762817,-0.020965576,0.022705078,-0.008399963,-0.033843994,0.011619568,-0.016571045,-0.029144287,-0.02609253,0.019088745,-0.04171753,-0.009048462,0.028457642,0.015945435,0.041534424,-0.013671875,-0.044036865,-0.027755737,-0.00198555,0.004814148,-0.03390503,-0.002313614,-0.006008148,0.024429321,0.020751953,0.0061035156,0.010124207,-0.003730774,-0.0037727356,-0.009140015,0.008613586,-0.00030088425,-0.019760132,0.01638794,0.008148193,-0.055725098,0.0070762634,-0.0023155212,0.06829834,-0.047576904,0.03894043,-0.00459671,0.017929077,0.0501709,-0.004486084,-0.043701172,-0.0033950806,0.032409668,0.010940552,0.052337646,0.017150879,-0.022521973,-0.01171875,0.064453125,-0.009986877,0.0005865097,0.0178833,0.01210022,0.037841797,-0.0015945435,-0.050567627,-0.03842163,0.0023269653,-0.027679443,0.046447754,-0.021774292,0.021026611,-0.02128601,0.014060974,-0.028060913,0.0024795532,-0.038726807,0.0004181862,-0.017288208,0.012367249,-0.0073509216,-0.023620605,0.017929077,0.011001587,-0.007873535,0.016204834,0.042816162,0.012786865,-0.0020523071,-0.031799316,-0.033172607,-0.009674072,-0.01612854,0.01612854,0.021942139,0.027801514,0.05203247,-0.037475586,0.0012073517,0.01864624,0.018035889,0.041412354,-0.004295349,-0.005016327,-0.06451416,-0.052337646,-0.032348633,-0.0440979,0.024261475,0.019226074,-0.007980347,0.05795288,0.0005841255,-0.018371582,-0.031143188,0.016860962,-0.04058838,-0.0046920776,0.04208374,-0.014450073,-0.025863647,0.013084412,-0.008956909,0.010215759,0.034362793,0.017730713,0.03390503,0.06970215,0.04220581,0.0064888,0.0138549805,0.003921509,0.024658203,0.009346008,-0.019256592,-0.030731201,-0.020828247,0.027252197,-0.018234253,-0.021987915,-0.053894043,0.07171631,0.04058838,0.0881958,0.021865845,0.012245178,0.034301758,-0.026153564,0.0047569275,-0.021606445,-0.02368164,-0.016326904,-0.03189087,0.034057617,-0.02168274,-0.0062026978,-0.022705078,0.035888672,-0.006385803,0.020584106,-0.035339355,0.045562744,-0.016098022,-0.014228821,0.018188477,0.009719849,0.061157227,0.0592041,-0.04928589,0.015991211,0.011291504,-0.03189087,0.010902405,0.03213501,-0.013114929,-0.005886078,-0.05697632,-0.026870728,-0.0043296814,-0.011817932,-0.045288086,-0.0012569427,0.023269653,0.016738892,0.033355713,-0.006137848,-0.013267517,-0.0039405823,-0.013320923,-0.058441162,-0.000790596,-0.035186768,0.0032539368,0.035247803,-0.024597168,0.003440857,-0.0015239716,-0.005908966,-0.007598877,0.01763916,0.027130127,0.001616478,-0.05419922,0.0395813,-0.009124756,0.015350342,0.0090789795,0.036376953,0.028305054,0.025009155,0.039611816,0.011390686,-0.014778137,-0.07055664,0.017471313,-0.052215576,0.008346558,0.014907837,-0.026733398,-0.0025100708,-0.012413025,-0.038085938,-0.03262329,0.016555786,-0.030517578,0.004760742,0.016143799,-0.024978638,-0.028152466,-0.050201416,-0.014709473,-0.0042762756,0.05545044,0.0154953,0.0030403137,-0.055664062,-0.006000519,0.016677856,0.009597778,0.029663086,-0.014450073,-0.007827759,-0.020248413,-0.028045654,-0.009544373,-0.030075073,0.03125,-0.011734009,0.002035141,0.015167236,0.011245728,0.017028809,0.002922058,0.013801575,0.024917603,-0.032318115,-0.0056266785,-0.008483887,0.042053223,0.01802063,-0.008239746,-0.05380249,0.05307007,0.018966675,0.04107666,-0.040649414,-0.002149582,-0.007335663,0.011962891,0.013000488,-0.010223389,0.0005016327,-0.008483887,-0.04446411,-0.07611084,0.03665161,-0.012145996,0.02494812,0.027618408,-0.00020945072,0.028244019,-0.018371582,0.00043559074,0.014579773,-0.02305603,-0.0078125,-0.029052734,-0.03604126,-0.02458191,-0.02279663,-0.028045654,0.023635864,-0.016708374,0.008148193,0.0008459091,-0.015129089,0.021987915,0.010787964,-0.0038414001,0.01965332,0.0048675537,0.02154541,0.037078857,0.0058135986,-0.046722412,0.019546509,0.0016727448,0.0071868896,-0.011054993,0.041778564,0.023376465,-0.00831604,-0.017547607,-0.009536743,-0.020126343,-0.02456665,0.0069389343,-0.002696991,0.009613037,-0.0006504059,-0.043548584,0.014007568,0.00046348572,-0.034851074,-0.021209717,0.010795593,0.01701355,-0.041809082,0.009719849,0.014778137,0.05279541,-0.021759033,-0.0024681091,0.004016876,0.035858154,0.03591919,0.008804321,-0.004901886,0.026977539,0.0020141602,0.013046265,-0.011299133,-0.019165039,0.016830444,-0.0034980774,0.025405884,0.012878418,0.0053138733,-0.021591187,-0.025970459,0.000036537647,-0.013015747,-0.031036377,0.02671814,0.023849487,0.024658203,-0.03326416,0.020004272,0.015853882,-0.01638794,-0.019546509,-0.011741638,0.041046143,-0.006919861,-0.008255005,0.019515991,0.011878967,0.029052734,-0.050567627,-0.011268616,0.010139465,0.016540527,-0.020126343,-0.048065186,-0.038726807,-0.002506256,0.045715332,0.011924744,0.027908325,0.031341553,-0.000003695488,0.005683899,0.025482178,-0.0014343262,-0.01776123,-0.011177063,-0.04852295,-0.016601562,-0.010017395,0.00011688471,-0.036956787,0.01210022,-0.0031223297,-0.031921387,0.006038666,-0.013160706,-0.006679535,-0.015258789,0.020263672,0.036590576,0.0033874512,0.01776123,-0.017089844,-0.03543091,-0.0047035217,0.0146484375,0.016799927,-0.049560547,0.014724731,-0.019485474,-0.012664795,-0.0017490387,0.010498047,0.018417358,0.018432617,0.012481689,0.029586792,-0.049865723,0.051818848,-0.028900146,0.019195557,-0.0037822723,-0.0435791,-0.01638794,-0.021896362,-0.010032654,0.031921387,-0.032409668,-0.0022506714,-0.025802612,-0.04711914,-0.015022278,-0.05883789,0.021499634,0.039794922,0.04473877,-0.031555176,-0.0020484924,-0.0033054352,0.00504303,-0.017654419,0.008644104,-0.010292053,0.028823853,0.03164673,0.0045700073,-0.036132812,-0.028381348,-0.009376526,-0.0051078796,-0.047302246,-0.05618286,-0.008575439,0.006729126,-0.010681152,-0.0074539185,-0.021240234,-0.032165527,-0.008285522,-0.042785645,0.012802124,0.003271103,0.018997192,0.016021729,-0.026992798,-0.0030288696,0.021209717,-0.012931824,0.026641846,0.011413574,-0.0069465637,-0.04284668,0.009719849,0.01953125,0.014709473,-0.007709503,-0.017684937,-0.004009247,-0.013061523,-0.05404663,-0.00008904934,-0.0025806427,-0.008224487,-0.013931274,0.00894165,-0.061462402,-0.007843018,-0.024230957,-0.0061569214,0.014892578,0.018005371,0.0025577545,0.00008779764,0.012237549,0.0052261353,-0.0074806213,-0.031951904,0.0067634583,0.010612488,0.01158905,0.029586792,0.04876709,0.0015068054,-0.03149414,0.008354187,0.0019893646,0.009666443,-0.021697998,0.008430481,-0.021865845,0.008506775,-0.0065231323,-0.013175964,-0.035705566,-0.004558563,0.084472656,-0.0045700073,-0.012817383,-0.009223938,-0.022201538,0.01448822,0.03555298,-0.048095703,-0.0038604736,-0.017318726,0.01965332,-0.020568848,0.007965088,0.0048828125,0.024108887,-0.010681152,-0.04815674,-0.015609741,-0.008117676,-0.014671326,-0.06689453,-0.029037476,-0.08282471,0.0034561157,-0.010597229,-0.01927185,0.004878998,0.010429382,-0.0262146,-0.08026123,0.0064735413,0.052886963,0.0085372925,0.017486572,-0.012084961,0.019424438,0.021820068,-0.030960083,0.002822876,0.030578613,-0.02798462,-0.01789856,-0.0211792,0.02078247,-0.017730713,-0.009140015,0.0009160042,0.010375977,0.014373779,-0.0015296936,0.010620117,-0.0032730103,0.026672363,-0.01687622,0.009498596,-0.009178162,-0.022842407,0.035461426,-0.04928589,0.022888184,0.0058135986,-0.014045715,0.011222839,0.030578613,0.039367676,-0.036132812,-0.023010254,0.015037537,0.010383606,0.032806396,-0.021392822,0.052886963,0.0045204163,-0.013900757,0.014762878,-0.0069847107,-0.014099121,-0.028335571,-0.029373169,0.01828003,0.0031147003,0.012298584,-0.01676941,-0.0035743713,0.023040771,0.0052108765,0.011604309,-0.009597778,-0.014427185,-0.022583008,0.0068092346,-0.00035190582,0.010894775,-0.00032305717,0.03756714,0.033691406,0.026687622,0.0019235611,-0.014389038,0.00077295303,0.022369385,-0.016021729,0.00242424,0.026489258,0.010848999,0.016921997,0.022659302,0.01146698,-0.047790527,-0.015457153,-0.024780273,-0.02571106,0.0049552917,-0.013153076,-0.012275696,-0.008583069,0.0031909943,-0.011695862,-0.028152466,-0.0035572052,-0.030410767,-0.022735596,-0.004337311,-0.018814087,0.023529053,0.00982666,0.0034637451,0.001332283,-0.0047798157,0.034057617,0.0043029785,-0.0135269165,0.0309906,0.03225708,0.0158844,-0.02204895,-0.0037879944,-0.008911133,-0.0017366409,-0.0021648407,-0.038726807,0.007381439,0.042388916,-0.017166138,0.0065345764,-0.0013284683,0.026046753,-0.010284424,-0.006855011,-0.003856659,0.018096924,-0.0018606186,0.036315918,-0.050628662,0.019119263,0.014793396,0.0033416748,-0.012992859,-0.019958496,-0.02355957,0.015197754,0.0039405823,-0.0027389526,0.05038452,0.0053100586,0.033325195,-0.021255493,-0.027755737,0.005077362,-0.028747559,-0.01637268,0.020874023,-0.011199951,-0.0027446747,0.019943237,-0.016220093,0.030395508,-0.038116455,0.014213562,0.0077323914,0.00008696318,-0.0039482117,-0.015350342,-0.0042381287,-0.013534546,-0.008575439,0.0060653687,-0.0024204254,0.045532227,0.014083862,0.033843994,0.05014038,0.010482788,-0.0027561188,-0.044769287,-0.027053833,-0.0016002655,-0.013267517,0.015197754,-0.019851685,0.049682617,0.036712646,0.008773804,0.03778076,0.03390503,0.03793335,0.005584717,0.007801056,-0.009017944,0.016830444,-0.0062675476,0.021911621,-0.008308411,0.03866577,-0.03869629,0.024978638,0.014480591,0.02407837,-0.016189575,0.040496826,0.066345215,0.020523071,-0.0138549805,0.046417236,-0.009590149,-0.010414124,-0.008491516,-0.018127441,0.045318604,0.007434845,0.038909912,0.04663086,0.011154175,-0.010070801,0.028411865,-0.025863647,-0.030929565,0.056549072,0.02609253,-0.02558899,-0.0060806274,0.009338379,0.010604858,-0.044311523,-0.019165039,0.031707764,-0.013061523,0.0077781677,-0.005760193,-0.007167816,-0.020614624,-0.0019044876,0.018035889,0.014152527,-0.012939453,0.031799316,0.028671265,0.010864258,0.028747559,0.0069465637,0.024002075,-0.030776978,-0.022384644,0.017196655,0.019927979,-0.009635925,-0.0067634583,0.023040771,0.016677856,0.041900635,0.04067993,-0.020904541,0.0049324036,0.030517578,0.013763428,-0.004924774,0.05203247,0.031066895,0.016326904,0.04159546,0.032958984,0.03488159,-0.046691895,0.016571045,0.0033454895,0.013458252,-0.011352539,-0.01737976,0.002292633,-0.0146102905,0.027755737,-0.0109939575,-0.009788513,0.02822876,0.02420044,-0.012031555,-0.011741638,-0.0052337646,0.011070251,-0.01979065,-0.0054893494,0.016540527,-0.014892578,0.032073975,0.011398315,0.028823853,-0.029769897,0.027877808,-0.008628845,-0.014030457,-0.008224487,0.02798462,-0.047546387,0.0034103394,-0.0056648254,0.0025081635,-0.05105591,0.008659363,0.03286743,-0.010276794,0.023284912,0.0074806213,-0.003042221,-0.007068634,0.026626587,0.013076782,-0.0077667236,-0.010032654,-0.021499634,0.020263672,0.04144287,-0.012687683,0.0023231506,-0.026000977,-0.003900528,0.005340576,-0.011810303,-0.0014228821,-0.010292053,-0.023010254,-0.020584106,0.018844604,0.033843994,0.021606445,0.05770874,-0.023468018,-0.01247406,0.010696411,0.039611816,-0.0055999756,0.0053749084,-0.0039749146,0.01914978,-0.025115967,0.049835205,0.03753662,0.005607605,0.03466797,-0.0037403107,-0.015899658,0.00881958,-0.008369446,0.03314209,-0.020187378,-0.0026435852,-0.0001834631,0.031036377,-0.017562866,-0.03010559,0.00233078,-0.018188477,-0.021392822,-0.020080566,0.01612854,0.00024068356,0.028457642,0.036254883,0.026428223,-0.023834229,0.058807373,-0.01235199,0.043670654,0.002521515,-0.01235199,0.052368164,0.01902771,0.03717041,0.024475098,0.013549805,-0.029632568,0.01889038,0.030654907,0.029846191,0.0039024353,0.0154418945,-0.018112183,0.03591919,0.0020809174,0.032562256,-0.0043144226,-0.0016641617,0.013534546,-0.0022468567,-0.014282227,-0.0035152435,-0.005645752,0.0051994324,0.042663574,-0.02960205,-0.02104187,-0.027786255,-0.008178711,0.02709961,-0.005039215,0.0020503998,-0.00793457,-0.021606445,0.012573242,-0.02545166,-0.029846191,0.010887146,0.027709961,-0.051849365,-0.010879517,0.005622864,0.019958496,-0.027160645,0.027862549,0.03387451,-0.002319336,0.0019664764,0.049987793,-0.004951477,0.031799316,-0.018295288,0.035461426,0.035888672,0.0079574585,-0.021240234,-0.0024299622,0.016342163,-0.0049095154,0.014701843,0.03366089,-0.013145447,0.003168106,0.0019397736,-0.014022827,-0.006198883,0.008361816,-0.011230469,0.0023078918,-0.008659363,-0.015106201,0.001748085,0.011383057,0.000020086765,0.010910034,0.0016469955,-0.013046265,0.0076904297,0.039123535,0.021331787,-0.03878784,-0.005924225,0.004211426,0.0056533813,-0.018554688,-0.009750366,0.0016860962,-0.035705566,0.01184082,0.021255493,0.01626587,0.011779785,-0.02168274,0.0017871857,0.029586792,0.0036525726,0.011520386,0.0036678314,-0.006160736,0.015060425,-0.013618469,-0.004753113,-0.01096344,-0.011383057,0.012535095,0.028274536,-0.0057754517,-0.03237915,0.025100708,0.005317688,0.0146484375,-0.002336502,-0.011001587,0.024642944,-0.0154418945,0.0013837814,-0.0062789917,0.011520386,-0.018218994,-0.014411926,-0.012550354,0.043884277,0.05557251,-0.010147095,-0.014945984,0.024505615,0.024017334,0.021194458,0.040893555,0.0005965233,0.04776001,0.017471313,-0.020767212,-0.022064209,0.019897461,-0.013839722,-0.032409668,0.015586853,-0.016021729,-0.004055023,0.015235901,0.0073623657,0.0004427433,-0.027755737,-0.014228821,-0.02180481,-0.013046265,0.020431519,-0.006454468,0.017807007,-0.02268982,-0.0058555603,0.014930725,-0.02381897,-0.044311523,-0.023910522,-0.003440857,-0.017837524,-0.055877686,0.010955811,-0.03152466,0.008460999,-0.017913818,0.007843018,-0.013809204,0.020065308,-0.008644104,-0.010101318,0.014556885,0.021209717,0.032958984,-0.0036392212,0.014427185,-0.031585693,-0.012252808,-0.024642944,0.01612854,-0.012611389,0.020645142,0.0032901764,0.034454346,0.024093628,-0.011398315,-0.0013875961,-0.011314392,-0.004058838,-0.0124435425,-0.0154418945,-0.026428223,0.0309906,0.016143799,-0.014122009,-0.0025138855,0.04055786,-0.02885437,-0.012046814,0.029815674,0.04647827,0.0057792664,0.026306152,-0.010597229,0.00093984604,-0.022125244,-0.007648468,-0.018005371,0.006439209,0.009239197,0.005706787,-0.00434494,0.006969452,0.018920898,-0.008728027,0.000320673,0.029891968,0.015419006,-0.008857727,0.036468506,0.019699097,0.011657715,-0.0044670105,-0.009521484,0.01576233,0.047058105,0.013160706,0.010520935,-0.010887146,0.011184692,-0.013587952,0.014434814,0.016479492,-0.025299072,-0.05126953,-0.012145996,-0.031677246,0.033325195,0.00015866756,0.0014219284,-0.013191223,0.01890564,-0.022872925,-0.02973938,-0.013420105,0.022323608,0.019058228,-0.014228821,-0.008102417,0.01411438,0.015289307,-0.030731201,-0.008453369,-0.052734375,-0.041625977,-0.017471313,-0.018096924,0.022781372,0.011581421,-0.012199402,0.0036811829,0.0011339188,-0.00075244904,0.0042304993,0.019805908,-0.009712219,-0.0036773682,0.03237915,0.01687622,-0.018630981,0.022323608,-0.0099487305,-0.00035190582,0.0047302246,-0.008964539,0.015388489,-0.02519226,0.03564453,-0.016952515,-0.008033752,0.029052734,-0.0037231445,0.016479492,-0.036254883,0.00009030104,-0.0025310516,-0.0061569214,0.0340271,-0.026000977,-0.0178833,0.005332947,-0.010444641,-0.027053833,0.0008568764,0.022277832,0.040100098,-0.005218506,0.047668457,-0.016708374,-0.008460999,0.017211914,0.013259888,-0.013221741,0.0077285767,0.030883789,0.006034851,-0.0014047623,-0.0073547363,-0.008865356,-0.035125732,-0.011367798,0.020645142,-0.012458801,-0.013206482,0.029006958,0.011962891,0.045776367,-0.008125305,0.024017334,0.016571045,0.0070228577,0.028518677,-0.0023269653,0.055664062,-0.0036315918,-0.028305054,0.004837036,0.00198555,-0.025543213,0.004760742,-0.0058937073,-0.0037460327,-0.046417236,0.00945282,-0.0016021729,0.017715454,-0.011886597,0.0099487305,-0.02230835,-0.0043792725,-0.039611816,-0.006477356,-0.037261963,0.008674622,0.036193848,0.0050354004,0.030700684,0.0025253296,-0.023773193,0.024368286,0.041107178,-0.00028586388,-0.029678345,-0.025054932,0.010917664,-0.00010997057,0.012680054,0.0045547485,-0.02809143,-0.01902771,-0.0040397644,-0.017669678,0.0070610046,-0.0050621033,0.017745972,0.011367798,0.00033164024,-0.005493164,0.025344849,-0.009277344,-0.003818512,0.01675415,0.010887146,0.048187256,0.030548096,-0.01838684,0.020690918,0.016113281,-0.04385376,0.062561035,-0.013671875,0.03289795,-0.016921997,0.006275177,-0.0362854,-0.02583313,-0.022247314,0.006729126],"createdAt":"2026-04-18T18:50:55.669Z","updatedAt":"2026-04-23T02:01:20.353Z","lastSeenAt":"2026-04-23T02:01:20.353Z","tsv":"'/api/v1/payments/64':94 '/request':13,28 '0.02':12,27,62,121 '000':110 '0x8335':115 '20':109 '2913':116 '402':104 '402 payment api' '6':125 'access':100 'account':74 'across':45 'advertis':129 'ai':139 'ai-inference' 'ai/ml':48 'analysi':143 'analyt':47,133 'api':5,20,37,72,99,170 'attach':82 'base':8,23,69,111,118 'base network api' 'base-network' 'bodi':227 'call':4,19 'caller':80 'categori':130 'challeng':105,203 'classif':146 'classification' 'confirm':210 'connect':179 'content':185 'convers':162 'crypto api access' 'data':46,132,136 'data-analytics' 'decim':126 'detail':196 'difficult':222 'doc':169 'document':164,197,219 'embed':147 'embeddings' 'enabl':36 'endpoint':44,55,92,200,212,238 'equal':120 'estim':157 'exampl':193 'exchang':152 'expect':234 'export':137 'extrem':166 'feed':151 'financ':148 'finance-data' 'finance/web3':50 'form':209 'gas':156 'generat':163 'geocod':160 'geocoding' 'given':122 'header':86 'includ':131 'infer':49 'infrastructur':52,159 'insight':138 'key':73 'know':224 'lack':217 'learn':141 'limit':77 'list':96 'live':205 'low payment fee' 'lowpaymentfee.com':31 'machin':140 'make':220 'metric':134 'micropayment api' 'network':9,24,70 'no-api-key' 'no-rate-limits' 'offer':40 'openapi':189 'oper':214 'page':174 'particular':237 'pay':2,17,58 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':57 'payment':85 'per':3,18,59 'platform':6,21,38,128 'premium':98 'price':150,171 'prompt':181 'quot':155 'rate':76,153 'readm':173 'render':176 'report':135 'request':60,89,106,226 'request/response':192 'requir':79 'respons':232 'return':102 'schema':190 'send':229 'sentiment':142 'sentiment-analysis' 'settl':64 'simpli':81 'spars':167 'specif':91 'summar':145 'text':144 'text-summarization' 'token':154 'unit':112 'usdc':15,30,66,114,123 'usdc api' 'usdc-settlement' 'util':53 'valid':161 'varieti':42 'via':10,25 'wallet':180 'web3':149 'well':208 'well-form':207 'x402':11,26,35,84,202 'x402 api' 'x402-enabled':34 'x402-payment'","prices":[{"id":"222cf275-ed37-498d-b918-4bc0f31118a2","listingId":"7bbd7980-4fe4-421f-af73-4213af559076","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/payments/64","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:50:55.669Z"}],"sources":[{"listingId":"7bbd7980-4fe4-421f-af73-4213af559076","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/payments/64","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:50:55.669Z","lastSeenAt":"2026-04-23T02:01:20.353Z"}],"details":{"listingId":"7bbd7980-4fe4-421f-af73-4213af559076","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/payments/64 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"All endpoints priced at $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/payments/64"},{"claim":"Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) without API key signup","Fetching real-time financial data and crypto gas estimates on a per-request basis","Running geocoding, validation, or data conversion utilities with instant pay-per-use pricing","Exporting analytics data or generating insights reports via micropayments"],"bestFor":["Agents or developers who want instant API access without account creation","Low-volume or sporadic API usage where subscriptions are wasteful","Crypto-native workflows that can attach x402 payment headers natively"],"notFor":["High-volume production workloads where per-request pricing adds up quickly","Users who need detailed API documentation, SDKs, or guaranteed SLAs","Non-crypto users who cannot generate x402 payment headers"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:05.676Z"},"updatedAt":"2026-04-23T02:01:20.353Z"}}