{"id":"211a2514-fd14-4433-9356-7bc62e3de63c","shortId":"tfbqFp","kind":"x402","title":"Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-enabled API platform that provides a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/v1/inbox/24` is listed as \"Premium API Access\" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). Payment is handled via the x402 protocol — no API keys, accounts, or subscriptions are required; callers attach an X-PAYMENT header to each request.\n\nThe wider platform advertises four endpoint 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 with no rate limits or minimum commitments.\n\nImportant caveat: the specific functionality behind `/api/v1/inbox/24` is not documented beyond the generic label \"Premium API Access.\" There is no OpenAPI schema, no request/response examples, and the crawled docs pages (pricing, README, API) returned only a wallet-connect prompt with no additional content. Prospective callers should test the endpoint to determine what it actually returns before relying on it in production.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","post-endpoint","json-response"],"categories":["api-platform","data","llm","finance","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC API","Base network API","micropayment API","lowpaymentfee","low payment fee"],"warnings":["The specific functionality of /api/v1/inbox/24 ('Premium API Access') is not documented — it is unclear what data or service it provides.","No OpenAPI schema or request/response examples are available.","Documentation pages (/api, /pricing, /README) returned no meaningful content beyond a wallet-connect prompt.","The broader platform lists many endpoint categories but none of them match the /api/v1/inbox/24 path, raising questions about what this endpoint actually does."],"endpointUrl":"https://lowpaymentfee.com/api/v1/inbox/24","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/inbox/24","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and the specific purpose of /api/v1/inbox/24 is undocumented. Docs pages returned only wallet-connect prompts 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":"2026-04-21T21:53:31.336Z","embedding":[-0.027496338,-0.013763428,0.038513184,0.02796936,0.02279663,-0.049743652,-0.015060425,0.028945923,0.0736084,-0.06640625,0.02407837,-0.037078857,-0.022445679,-0.019012451,-0.020828247,0.012367249,-0.0053749084,0.0074539185,-0.049316406,0.03390503,0.0028076172,-0.007358551,-0.038238525,0.032989502,-0.004901886,-0.027862549,-0.014389038,-0.0236969,-0.003967285,-0.04336548,0.05340576,-0.028884888,0.007896423,0.006122589,-0.012428284,0.0012540817,-0.0052604675,0.03515625,0.028198242,-0.009666443,-0.026428223,-0.03869629,0.014099121,-0.030044556,-0.05114746,-0.003835678,0.0046577454,-0.016693115,0.008888245,0.024383545,-0.030563354,-0.0015478134,-0.004840851,0.010643005,0.03237915,0.016815186,0.007396698,0.0107040405,0.027267456,0.0104904175,0.0026454926,-0.059051514,-0.028961182,0.0039520264,-0.004673004,0.03677368,-0.0063171387,0.04800415,0.00774765,0.074523926,0.026504517,0.051208496,0.023086548,0.009590149,0.009773254,-0.014587402,0.0042304993,0.062347412,-0.022079468,-0.0037136078,-0.0051727295,-0.008010864,-0.052337646,0.0051345825,-0.023101807,-0.0345459,-0.0064468384,0.033111572,-0.028884888,0.021011353,-0.08276367,-0.033996582,-0.009994507,0.016860962,0.00944519,0.0010519028,0.00029420853,0.005973816,-0.014701843,0.036499023,0.008300781,-0.04284668,0.015510559,-0.0031604767,0.036865234,0.04333496,0.016555786,0.011329651,0.018432617,-0.011764526,-0.052581787,0.014762878,-0.03466797,-0.010864258,-0.0010414124,-0.0039100647,-0.0074005127,0.016937256,-0.03945923,0.012176514,-0.026504517,0.043792725,-0.00005763769,0.009933472,0.003944397,-0.053710938,-0.016143799,-0.00016784668,-0.031829834,-0.007911682,0.01675415,0.012489319,0.026992798,-0.022949219,-0.037475586,-0.01739502,-0.025527954,-0.017730713,-0.038848877,-0.041168213,0.04638672,-0.031341553,0.012428284,0.022247314,-0.089538574,-0.009147644,-0.051849365,-0.009651184,-0.012794495,-0.0026168823,-0.017837524,0.034210205,-0.020889282,-0.03579712,-0.02041626,-0.0027923584,0.03656006,0.029830933,-0.019729614,0.04724121,-0.025466919,0.017440796,0.014755249,-0.014472961,0.007095337,0.011634827,-0.009422302,-0.09136963,-0.08526611,-0.014022827,0.018493652,-0.024719238,-0.024887085,-0.010810852,-0.007965088,-0.0491333,-0.021011353,0.0033836365,0.0058250427,-0.03289795,0.013504028,-0.017959595,0.024734497,-0.021591187,-0.03918457,-0.017318726,-0.021087646,0.043151855,0.014060974,0.030731201,0.028686523,-0.030563354,0.05670166,0.058746338,-0.026351929,-0.02279663,0.016723633,-0.031143188,0.0079574585,0.0008869171,-0.0008225441,-0.04421997,0.029174805,0.07910156,-0.0026054382,0.0010852814,-0.012649536,-0.03567505,-0.043151855,-0.040100098,0.032989502,0.022705078,-0.004924774,0.029830933,-0.047912598,-0.05230713,-0.023117065,0.0038642883,0.016677856,0.066223145,0.020507812,0.008964539,-0.00066041946,0.02230835,-0.04309082,0.034576416,0.034240723,-0.007987976,-0.037231445,-0.005241394,0.021408081,0.026031494,-0.0050697327,0.017364502,0.008010864,0.02947998,-0.012413025,0.005756378,0.020935059,-0.004173279,-0.0132369995,-0.02519226,-0.026000977,0.022445679,0.010345459,-0.021896362,-0.024887085,-0.076660156,0.04949951,0.042663574,0.04574585,-0.001824379,-0.0017108917,-0.02067566,0.007030487,-0.06262207,0.06488037,0.06719971,-0.0057296753,-0.014953613,0.017242432,-0.018371582,-0.022216797,0.025482178,-0.00020480156,-0.03503418,0.003189087,0.008392334,-0.055267334,-0.0043182373,0.0018730164,0.026016235,0.06286621,0.0055160522,-0.040100098,-0.013710022,-0.016952515,-0.038635254,-0.02571106,0.01828003,-0.03112793,-0.00605011,0.023605347,-0.006629944,0.0231781,-0.015289307,0.014045715,-0.005290985,0.0030441284,-0.025634766,-0.024246216,0.012924194,-0.0015001297,-0.0440979,0.0028381348,-0.026123047,0.06665039,-0.04650879,0.03161621,-0.007041931,0.02078247,0.028579712,0.01852417,-0.058685303,0.010101318,0.03012085,0.020019531,0.051086426,0.007671356,-0.043884277,-0.019226074,0.07904053,-0.008613586,-0.0025844574,0.002008438,-0.0019254684,0.021255493,-0.02128601,-0.051727295,-0.028808594,-0.0033454895,-0.031951904,0.023864746,-0.03262329,0.021362305,-0.00881958,0.025466919,-0.0146865845,-0.00932312,-0.023498535,0.02947998,-0.03451538,0.004283905,-0.025863647,-0.034301758,0.01663208,0.0067977905,-0.011886597,-0.012649536,0.0234375,0.03567505,-0.0058784485,-0.046844482,-0.0259552,-0.015174866,-0.0057907104,0.023208618,0.040100098,0.03149414,0.036376953,-0.04257202,-0.0019683838,0.05444336,0.012138367,0.047821045,-0.0076141357,0.01348114,-0.09210205,-0.050323486,-0.01612854,-0.043548584,0.0066070557,0.033050537,0.0028381348,0.045532227,0.015914917,-0.03378296,-0.07171631,0.030792236,-0.04949951,0.032562256,0.039367676,-0.008636475,-0.01739502,-0.005847931,-0.002008438,0.017425537,0.034088135,0.018844604,0.026443481,0.08312988,0.051635742,-0.011009216,0.025238037,0.022872925,0.030563354,-0.00029420853,-0.0099105835,-0.024414062,0.0020141602,0.028457642,-0.027938843,-0.02293396,-0.07287598,0.046875,0.034088135,0.08325195,0.020858765,0.0037136078,0.024139404,-0.0126571655,0.00409317,-0.034088135,-0.022216797,-0.041381836,-0.03668213,0.042022705,-0.025177002,0.017852783,-0.025299072,0.043151855,-0.009170532,0.025054932,-0.015960693,0.038909912,0.0053749084,0.0012311935,0.012741089,0.016540527,0.0395813,0.062408447,-0.0395813,0.029968262,0.037902832,-0.032806396,0.013969421,0.028884888,-0.010055542,-0.01285553,-0.068115234,-0.04031372,-0.0064353943,-0.0053634644,-0.05807495,0.004383087,-0.01234436,0.009506226,0.0262146,-0.01701355,0.010650635,-0.011581421,-0.02696228,-0.05822754,0.0045433044,-0.047058105,-0.0029907227,0.02798462,-0.026321411,-0.0076141357,-0.002357483,-0.016830444,-0.00061130524,0.011810303,0.031951904,-0.016555786,-0.048828125,0.034729004,0.010002136,-0.0015745163,0.012229919,0.03286743,-0.011299133,0.018127441,0.05596924,0.009414673,-0.0093688965,-0.047546387,0.039245605,-0.05218506,0.012916565,0.0158844,-0.018951416,0.01586914,0.0047302246,-0.0357666,-0.024795532,0.008049011,-0.014572144,-0.007801056,0.013252258,-0.014549255,-0.02468872,-0.055725098,-0.015640259,0.0069274902,0.06781006,0.020614624,-0.0037174225,-0.04711914,-0.0051994324,0.009605408,0.005142212,0.043426514,-0.013877869,-0.01902771,-0.003232956,-0.035064697,0.0015258789,-0.0062065125,0.031829834,0.0036621094,-0.007457733,0.032226562,0.016159058,0.016067505,0.005332947,0.0056114197,0.014984131,-0.036224365,-0.021835327,0.006542206,0.04824829,0.018295288,-0.0042304993,-0.039245605,0.030883789,0.01927185,0.028701782,-0.025939941,-0.019317627,-0.014175415,0.02067566,0.012672424,-0.019638062,-0.011276245,0.002910614,-0.06274414,-0.068603516,0.037719727,-0.021621704,0.015159607,0.010818481,0.019104004,0.007575989,-0.012702942,0.01889038,0.0041007996,-0.028701782,-0.0052337646,-0.0137786865,-0.021713257,-0.003293991,-0.0018234253,-0.0011816025,0.01638794,-0.01285553,0.013458252,0.0013685226,-0.008476257,0.027938843,-0.00046992302,-0.0057373047,0.031433105,0.0029029846,0.028274536,0.03164673,0.006416321,-0.037231445,0.0340271,-0.008041382,0.028289795,-0.008239746,0.045288086,0.041107178,0.016235352,-0.015151978,-0.006752014,-0.021774292,-0.02909851,0.0050811768,-0.0012369156,0.022064209,-0.0178833,-0.059265137,0.014701843,-0.0011262894,-0.04159546,-0.03439331,0.016494751,0.006855011,-0.039154053,0.018859863,0.02796936,0.0574646,-0.028060913,0.033935547,0.012969971,0.036346436,0.03326416,-0.0013771057,-0.006504059,0.021026611,-0.006790161,0.0036334991,-0.0046157837,0.004234314,0.019989014,0.0035209656,0.0211792,0.04107666,0.016738892,-0.016799927,-0.037384033,0.0060806274,-0.012107849,-0.011634827,0.0011768341,0.03515625,0.023239136,-0.032958984,0.01663208,0.0023345947,-0.020217896,-0.0074005127,-0.022705078,0.030685425,-0.0021953583,-0.011016846,0.027755737,0.009109497,0.018203735,-0.035125732,-0.00051498413,0.0054626465,0.005634308,-0.027572632,-0.048339844,-0.051605225,0.008644104,0.0079193115,0.009437561,0.030227661,0.032409668,-0.0001629591,-0.0016832352,0.027404785,0.01737976,-0.023025513,-0.008720398,-0.03366089,-0.012748718,-0.010505676,0.000030100346,-0.04046631,0.024658203,0.0064201355,-0.022872925,-0.011238098,-0.0052375793,0.0006918907,0.0036563873,-0.0033454895,0.05001831,0.0063819885,0.020523071,-0.011817932,-0.030807495,-0.011962891,-0.00018167496,0.029220581,-0.04559326,0.02078247,-0.0013380051,-0.002374649,0.0039749146,-0.00063562393,0.0030822754,0.030303955,0.021499634,0.029251099,-0.0357666,0.050354004,-0.028015137,0.018981934,-0.00023031235,-0.023345947,0.007133484,-0.020324707,-0.007259369,0.035308838,-0.027496338,-0.030731201,-0.025375366,-0.017364502,0.0038490295,-0.043151855,0.014816284,0.033203125,0.035369873,-0.03616333,0.012382507,0.00095558167,0.0039978027,-0.012786865,-0.005493164,-0.00038409233,0.014968872,0.024536133,-0.00034356117,-0.0051994324,-0.016464233,-0.02947998,-0.0022697449,-0.040893555,-0.051483154,-0.00919342,0.0073623657,-0.0026454926,-0.026000977,-0.030792236,-0.034240723,0.014312744,-0.04336548,0.014877319,-0.007068634,0.009803772,-0.013633728,-0.030044556,0.0029392242,0.019958496,-0.0062675476,0.03845215,0.011993408,0.001964569,-0.02355957,0.028808594,0.0231781,0.0010643005,-0.010139465,-0.012321472,-0.0046958923,-0.036193848,-0.0657959,-0.009742737,-0.01651001,-0.011940002,-0.022247314,0.010055542,-0.05041504,0.0107040405,-0.0062026978,-0.007194519,0.028167725,0.012786865,-0.016830444,-0.018127441,0.024871826,-0.007896423,-0.016326904,-0.023803711,0.013145447,0.010131836,-0.00031661987,0.039367676,0.04348755,0.0015478134,-0.03314209,0.021133423,-0.0042800903,0.023651123,-0.022842407,-0.0044898987,-0.018753052,-0.0035591125,-0.020431519,-0.019760132,-0.040222168,-0.00009185076,0.07720947,0.0037784576,-0.0032234192,-0.023223877,-0.013122559,0.016418457,0.020980835,-0.036071777,-0.005332947,-0.03475952,-0.002576828,-0.031021118,0.03439331,0.006099701,0.01763916,-0.00894165,-0.045806885,-0.015327454,0.0056877136,-0.011734009,-0.05834961,-0.012123108,-0.059814453,0.016952515,-0.017807007,-0.033294678,0.0051116943,0.007987976,-0.009208679,-0.07366943,0.0070877075,0.03741455,-0.00548172,0.035369873,0.0064964294,0.015609741,0.017044067,-0.012832642,0.008613586,0.016082764,-0.02458191,-0.018173218,-0.012786865,0.009140015,0.009925842,-0.013504028,0.022720337,0.006389618,0.023834229,-0.014625549,0.018081665,-0.009963989,0.02394104,-0.02684021,0.021255493,-0.012252808,-0.006790161,0.03173828,-0.039916992,0.021743774,0.015022278,-0.0025730133,-0.008056641,0.0184021,0.03439331,-0.022216797,-0.021469116,0.0013961792,0.009414673,0.019515991,-0.023025513,0.044128418,0.018539429,-0.030792236,0.026443481,0.0017156601,-0.0082473755,-0.03390503,-0.020233154,0.01966858,-0.006931305,0.012611389,-0.02255249,0.002401352,0.017120361,-0.012359619,0.016555786,-0.014663696,-0.021942139,-0.010696411,-0.0030956268,-0.0076065063,0.010269165,-0.0049591064,0.023376465,0.019958496,0.018081665,0.0040359497,-0.019363403,-0.0051956177,0.02418518,0.0038833618,0.010055542,0.036071777,0.01134491,0.006263733,0.019210815,-0.0000015497208,-0.04333496,-0.003206253,-0.01663208,-0.009048462,0.0020332336,-0.009674072,-0.012260437,0.002281189,-0.00233078,-0.0068626404,-0.022094727,0.006385803,-0.020126343,-0.026275635,0.0017843246,-0.0103302,0.029022217,0.0039634705,0.0014562607,0.010276794,0.0024147034,0.038482666,-0.0041923523,-0.025100708,0.018096924,0.02456665,0.014839172,-0.036834717,-0.028167725,-0.0059814453,0.007980347,0.0031471252,-0.041778564,0.008728027,0.04019165,-0.018096924,0.014381409,-0.0017232895,0.032287598,-0.0064086914,0.022567749,-0.01689148,0.017089844,-0.014877319,0.014457703,-0.02986145,0.019500732,0.024047852,0.010772705,-0.018707275,-0.028778076,-0.037261963,0.034576416,0.011108398,-0.014572144,0.049926758,0.007896423,0.027191162,-0.025619507,-0.015007019,0.0025119781,-0.039398193,-0.02406311,0.030715942,0.0033054352,0.008056641,0.0049476624,-0.02104187,0.02748108,-0.01727295,0.014953613,-0.0007624626,-0.009857178,-0.016998291,-0.020828247,-0.008079529,0.013465881,-0.032836914,-0.0020275116,0.0068893433,0.061462402,0.026931763,0.049987793,0.044433594,0.0019607544,-0.0044670105,-0.04006958,-0.029037476,0.010368347,-0.015670776,0.025024414,-0.010879517,0.052856445,0.05581665,-0.011634827,0.031219482,0.048583984,0.05026245,-0.004676819,0.012672424,-0.027069092,0.0011749268,0.004940033,0.041046143,0.0016183853,0.038513184,-0.027648926,0.028945923,0.034698486,0.01499939,-0.022109985,0.032287598,0.06530762,0.0060157776,0.0054512024,0.00969696,0.00022530556,-0.013114929,-0.001200676,-0.020599365,0.051757812,0.014915466,0.07122803,0.032562256,-0.004421234,-0.0015707016,0.019348145,-0.032836914,-0.014328003,0.05911255,0.021560669,-0.01828003,-0.004135132,0.009895325,0.0017538071,-0.046447754,-0.03314209,0.01890564,-0.009101868,0.0020198822,-0.014831543,0.002576828,-0.0127334595,0.016815186,0.013221741,0.010498047,0.005558014,0.034210205,0.021057129,0.0044441223,0.04171753,0.0012273788,0.0413208,-0.020050049,-0.02458191,0.015838623,0.013763428,-0.010650635,0.0011005402,0.03353882,-0.005630493,0.0368042,0.04006958,-0.01676941,0.020401001,0.026733398,0.001584053,0.0033855438,0.0670166,0.03970337,0.0066070557,0.03253174,0.021759033,0.044647217,-0.025299072,0.031402588,0.0036582947,-0.0013656616,-0.007331848,-0.017044067,-0.010520935,0.00283432,0.022598267,-0.0019245148,-0.015914917,0.002752304,0.029342651,-0.0017328262,-0.00021731853,-0.004219055,-0.0073776245,-0.012718201,-0.00680542,0.015357971,-0.029373169,0.02079773,0.0129470825,0.023666382,-0.006465912,-0.004863739,-0.006881714,-0.019363403,-0.0020618439,0.03086853,-0.024642944,0.008644104,0.00028705597,0.0034923553,-0.05480957,0.018493652,0.021865845,-0.01309967,0.033447266,0.010635376,-0.021575928,0.010070801,0.011398315,0.00021541119,0.008972168,-0.014854431,-0.023666382,0.028808594,0.044006348,0.010871887,0.0044937134,-0.020828247,-0.01802063,0.008926392,-0.0060806274,-0.02357483,-0.0013685226,-0.0055160522,-0.032043457,0.006259918,0.019638062,0.026046753,0.035888672,-0.011192322,-0.022018433,0.011482239,0.030380249,0.0014419556,0.008056641,0.010940552,0.020446777,-0.007911682,0.035217285,0.04663086,0.01525116,0.04815674,-0.009147644,-0.0129470825,-0.0019102097,-0.014312744,0.011985779,-0.018753052,-0.00566864,-0.010383606,0.036499023,-0.013557434,-0.031341553,0.011222839,-0.007911682,-0.027236938,-0.008277893,0.009284973,0.0044136047,0.03665161,0.042510986,0.011100769,-0.030166626,0.05911255,-0.0055770874,0.044921875,-0.0028896332,-0.016021729,0.057006836,0.03756714,0.020553589,0.015342712,0.0138168335,-0.047058105,0.018539429,0.04598999,0.026184082,0.018936157,-0.006958008,-0.0030593872,0.031951904,-0.0011348724,0.014213562,-0.0061035156,-0.005065918,0.016479492,-0.0032997131,-0.0028839111,-0.0037498474,0.00048971176,-0.00066280365,0.04135132,-0.029266357,0.0028266907,-0.033111572,-0.012176514,0.036987305,-0.008369446,-0.0056037903,-0.001241684,-0.02003479,0.010467529,-0.01625061,-0.029296875,0.008651733,0.016830444,-0.041992188,-0.014137268,0.010177612,0.004108429,-0.017044067,0.034820557,0.015457153,0.0023937225,0.011131287,0.03137207,-0.017196655,0.014007568,-0.013366699,0.0259552,0.036712646,0.009353638,-0.017822266,-0.011787415,0.008361816,-0.010612488,0.010345459,0.031341553,0.0043754578,0.011001587,-0.007575989,-0.004714966,0.000770092,0.017242432,-0.008155823,0.0107040405,-0.009819031,-0.00699234,0.0013694763,0.002664566,0.012123108,0.012634277,-0.032836914,-0.014877319,0.017959595,0.045776367,0.03744507,-0.034851074,-0.003944397,-0.0032863617,0.008094788,-0.024765015,-0.011909485,-0.017059326,-0.02911377,0.020523071,0.009544373,0.013893127,0.027526855,-0.02079773,-0.0012216568,0.027328491,0.0036373138,0.0026664734,0.0032424927,-0.028503418,0.0072021484,-0.0109939575,-0.013221741,-0.015045166,-0.0040779114,0.008605957,0.014556885,-0.001115799,-0.03225708,0.020843506,-0.012916565,0.022720337,-0.0025539398,0.009101868,0.017166138,-0.005996704,-0.013031006,0.007095337,0.012283325,-0.01638794,-0.005508423,-0.024902344,0.012870789,0.03878784,-0.00819397,-0.0007581711,0.02798462,0.0141067505,0.019470215,0.047027588,0.0053138733,0.039733887,0.02659607,-0.024734497,-0.023132324,0.023345947,-0.015396118,-0.023925781,0.01940918,-0.019943237,-0.029968262,0.0154800415,0.011070251,0.0031833649,-0.018661499,0.00029349327,-0.024337769,-0.02947998,0.016860962,-0.016159058,0.015930176,-0.005367279,-0.015113831,-0.0064201355,-0.018341064,-0.059265137,-0.024963379,0.0026054382,-0.005455017,-0.07556152,0.006965637,-0.034576416,0.012031555,-0.016845703,-0.013496399,-0.02368164,0.028701782,-0.012084961,0.0010652542,-0.000052511692,0.014701843,0.021102905,0.013648987,0.030685425,-0.03213501,-0.04800415,-0.01878357,0.0024719238,0.0032596588,0.029220581,0.01108551,0.03704834,0.019256592,-0.014915466,0.006374359,-0.012145996,-0.0039863586,-0.02571106,-0.023513794,-0.031555176,0.03137207,0.014419556,-0.0060195923,0.01361084,0.035247803,-0.009521484,-0.009849548,0.017608643,0.039215088,0.0055007935,0.014083862,-0.025115967,-0.010948181,-0.006160736,0.0046043396,-0.013458252,0.011474609,0.010314941,0.009468079,-0.021713257,0.01979065,0.03805542,-0.0126571655,-0.006965637,0.015533447,-0.0026283264,-0.017242432,0.03125,0.012077332,0.0046539307,-0.021270752,-0.010665894,0.021621704,0.06213379,0.024780273,0.008026123,0.0007557869,-0.008285522,-0.013465881,-0.0043525696,0.00059080124,-0.028808594,-0.031982422,-0.016647339,-0.020111084,0.012229919,-0.014595032,0.0076789856,0.001200676,0.026107788,-0.021194458,-0.018997192,-0.023208618,0.042663574,-0.007881165,-0.011871338,-0.0069389343,0.011184692,0.009124756,-0.014755249,-0.002149582,-0.024749756,-0.047576904,0.0025520325,-0.015510559,0.033447266,0.017044067,-0.0119018555,0.004512787,-0.0035915375,0.0017271042,-0.019638062,0.023605347,-0.021011353,0.007965088,0.012718201,0.013420105,-0.026550293,0.01977539,-0.017211914,-0.008003235,0.011390686,-0.016220093,0.017623901,-0.013076782,0.04458618,0.0072135925,0.0044670105,0.038482666,-0.0066490173,0.00056409836,-0.031097412,0.015365601,0.0030326843,-0.016998291,0.049987793,-0.022903442,-0.022033691,-0.009414673,-0.013336182,-0.008842468,0.0119018555,0.008682251,0.01979065,-0.0020561218,0.04168701,-0.015403748,0.009414673,0.02545166,0.015914917,-0.021575928,0.0061187744,0.023132324,0.0021686554,-0.0017318726,0.0029449463,-0.0059661865,-0.036193848,-0.0046310425,0.0074768066,0.0010786057,-0.0013284683,0.022094727,-0.00037384033,0.033599854,-0.00085401535,0.0041503906,0.013259888,0.019500732,0.03161621,0.0045166016,0.030715942,-0.015930176,-0.01864624,-0.005859375,0.0049438477,-0.026504517,-0.002670288,-0.0050354004,0.0036468506,-0.028213501,0.005794525,-0.0049819946,0.03555298,-0.017929077,0.013076782,-0.028503418,-0.0044174194,-0.03930664,-0.018875122,-0.027786255,0.0037517548,0.024734497,-0.0042915344,0.029434204,0.0034255981,-0.017959595,0.026351929,0.03793335,0.007335663,-0.017822266,-0.016845703,0.0023269653,-0.00014579296,0.014228821,0.016555786,-0.023513794,-0.02268982,0.01184082,-0.027114868,0.010505676,0.00003749132,0.01109314,0.002204895,0.015625,-0.0115356445,0.019226074,-0.010269165,-0.02279663,0.0046806335,0.012145996,0.030303955,0.021881104,0.0043182373,0.019546509,0.024978638,-0.037261963,0.06738281,0.0020866394,0.03213501,-0.01436615,0.01914978,-0.033721924,-0.03277588,-0.0074005127,0.007133484],"createdAt":"2026-04-21T18:32:22.047Z","updatedAt":"2026-04-22T11:32:58.117Z","lastSeenAt":"2026-04-22T11:32:58.117Z","tsv":"'/api/v1/inbox/24':69,179 '/request':19,38,164 '0.02':18,37,80,163 '000':84 '20':83 '6':90 'Base network API' 'USDC API' 'access':75,189 'account':102 'actual':227 'addit':215 'advertis':120 'ai':12,31,131 'analysi':135 'analyt':125 'api':5,24,45,74,100,188,205 'attach':108 'base':8,27,63,85 'behind':178 'beyond':183 'broad':50 'call':4,23,82 'caller':107,218 'catalog':51 'categori':123 'caveat':174 'classif':138 'commit':172 'connect':211 'content':216 'convers':155 'cost':77 'crawl':200 'data':11,30,124,128 'decim':91 'determin':224 'doc':201 'document':182 'embed':139 'enabl':44 'endpoint':16,35,57,67,122,159,222 'estim':149 'exampl':197 'exchang':144 'export':129 'feed':143 'financ':13,32,140 'four':121 'function':177 'gas':148 'generat':156 'generic':185 'geocod':153 'handl':94 'header':113 'import':173 'infrastructur':151 'insight':130 'json-response' 'key':101 'label':186 'learn':133 'limit':169 'list':71,158 'low payment fee' 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':132 'metric':126 'micropayment API' 'minimum':171 'network':64 'no-api-key' 'offer':10,29 'openapi':193 'page':202 'pay':2,21,54 'pay-per-cal':1,20 'pay-per-call API' 'pay-per-request':53 'payment':92,112 'per':3,22,55,81 'platform':6,25,46,119 'post-endpoint' 'premium':73,187 'price':142,165,203 'product':234 'prompt':212 'prospect':217 'protocol':98 'provid':48 'quot':147 'rate':145,168 'readm':204 'reli':230 'report':127 'request':56,116 'request/response':196 'requir':106 'return':206,228 'schema':194 'sentiment':134 'settl':58 'share':160 'specif':66,176 'subscript':104 'summar':137 'test':220 'text':136 'token':146 'unit':86 'usdc':9,28,60,88 'usdc-base' 'util':15,34,152 'valid':154 'via':95 'wallet':210 'wallet-connect':209 'web3':141 'wider':118 'x':111 'x-payment':110 'x402':43,97 'x402 API' 'x402-enabled':42 'x402-payment'","prices":[{"id":"c51002e3-e781-4e98-938e-3237fd173868","listingId":"211a2514-fd14-4433-9356-7bc62e3de63c","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/inbox/24","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:22.047Z"}],"sources":[{"listingId":"211a2514-fd14-4433-9356-7bc62e3de63c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/inbox/24","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:22.047Z","lastSeenAt":"2026-04-22T11:32:58.117Z"}],"details":{"listingId":"211a2514-fd14-4433-9356-7bc62e3de63c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/inbox/24 \\\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":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20,000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/inbox/24"},{"claim":"All listed endpoints cost $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints in Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/inbox/24"}],"useCases":["Agents that need on-demand API access without managing API keys or subscriptions","Programmatic access to data, AI inference, or financial feeds with per-call USDC micropayments","Testing x402 protocol integrations against a live endpoint"],"bestFor":["Developers or agents wanting zero-signup, pay-as-you-go API access","x402-compatible wallets and agent frameworks on Base","Low-volume or bursty workloads where per-request pricing is economical"],"notFor":["High-volume production workloads needing SLA guarantees (no documented SLA or support)","Users who need detailed API documentation or schemas before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:08.006Z"},"updatedAt":"2026-04-22T11:32:58.117Z"}}