{"id":"69be3bbe-c5b5-4f16-95ed-b654cbe50ecb","shortId":"ttM3eK","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com offers a suite of pay-per-request APIs accessible via the x402 payment protocol on the Base network. The endpoint at `/api/v1/benefits/99` is labeled \"Premium API Access\" and requires a per-call payment of up to 20,000 base units of USDC (0.02 USD) settled on Base. No API keys, rate limits, or upfront commitments are needed — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader platform advertises endpoints across 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 endpoints are listed at the same $0.02/request price point. However, the specific `/api/v1/benefits/99` endpoint's functionality is not documented beyond its \"Premium API Access\" label — it does not correspond to any of the named endpoints on the landing page.\n\nThe x402 challenge confirms the endpoint is live, accepts POST requests, and settles payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base. The response MIME type is `application/json`. Documentation pages beyond the landing page returned only a \"Connect wallet\" prompt with no substantive content.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","json-response","no-api-key","premium-api-access"],"categories":["api","payment"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API endpoint","crypto-paid API"],"warnings":["The /api/v1/benefits/99 endpoint is not listed among the named APIs on the landing page — its actual functionality is unknown.","All documentation pages (/docs, /api, /pricing, /README) returned only 'Connect wallet' with no substantive content.","No OpenAPI spec, request schema, or response examples are available.","The endpoint's purpose must be inferred; treat integration as experimental."],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/99","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/benefits/99","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and confirms pricing and settlement details, but the specific endpoint's functionality ('Premium API Access' at /api/v1/benefits/99) is undocumented. No OpenAPI schema, no request/response examples, and all documentation pages beyond the landing page are empty. The endpoint path doesn't match any named service on the site.","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":"2026-04-19T16:45:19.060Z","embedding":[-0.015945435,-0.033233643,0.05795288,0.01638794,0.013511658,-0.028244019,-0.019729614,0.044525146,0.07336426,-0.076538086,0.014831543,-0.04751587,-0.018554688,-0.051330566,-0.028945923,0.02142334,-0.007217407,0.016616821,-0.042633057,0.029052734,0.014549255,-0.026565552,-0.009101868,0.03640747,0.005443573,-0.026397705,-0.01586914,-0.010139465,-0.003479004,-0.048675537,0.03753662,-0.025039673,-0.0021953583,0.015045166,-0.020935059,-0.027648926,0.006652832,0.03125,0.021591187,-0.011184692,-0.0063095093,-0.051757812,-0.002571106,-0.005832672,-0.07244873,0.002105713,0.0035686493,-0.016998291,0.008811951,0.02142334,-0.0362854,-0.0011234283,-0.008705139,-0.009140015,0.008155823,0.00843811,-0.0012226105,-0.0012483597,0.0056533813,0.012382507,0.0019569397,-0.060638428,-0.013587952,-0.005378723,-0.0075645447,0.061035156,-0.011367798,0.042297363,0.02331543,0.04763794,0.04147339,0.057617188,0.02029419,0.0141067505,-0.015838623,-0.009147644,0.011276245,0.06628418,-0.0119018555,-0.018676758,-0.013580322,-0.010192871,-0.049468994,0.0073928833,-0.021911621,-0.044921875,-0.0107421875,0.0063934326,-0.024291992,0.036499023,-0.070373535,-0.009010315,-0.021347046,-0.0056419373,0.009925842,-0.00843811,-0.019195557,0.017669678,-0.018295288,0.02267456,0.012428284,-0.036621094,0.01725769,0.01386261,0.04159546,0.058563232,0.03253174,0.025222778,0.012908936,-0.010482788,-0.031677246,0.022521973,0.0064582825,-0.008651733,0.014831543,0.011352539,-0.008117676,-0.0008535385,-0.01499939,0.019104004,-0.049804688,0.050964355,0.018554688,-0.009590149,0.015686035,-0.042907715,-0.0059776306,0.014045715,-0.03189087,-0.0027770996,-0.004837036,0.017715454,0.047027588,-0.013771057,-0.03491211,-0.0011224747,-0.018005371,-0.029052734,-0.052581787,-0.04244995,0.040252686,-0.04360962,0.019805908,0.031066895,-0.099731445,-0.015182495,-0.04421997,-0.0018396378,-0.02684021,-0.004627228,-0.016708374,0.020385742,-0.028030396,-0.0015878677,-0.023422241,-0.02999878,-0.0019779205,0.033325195,-0.017730713,0.047027588,-0.0052833557,0.02684021,0.017608643,0.014045715,0.03375244,0.032928467,0.0009880066,-0.06958008,-0.08770752,-0.029510498,0.0018072128,-0.014312744,-0.036834717,0.018600464,-0.0014591217,-0.068481445,-0.026306152,-0.005748749,-0.011268616,-0.050445557,0.003074646,-0.031143188,0.017074585,-0.019210815,-0.079833984,-0.028060913,-0.028121948,0.07507324,0.030258179,0.014625549,0.043762207,-0.021026611,0.05493164,0.022537231,-0.019012451,-0.029510498,0.022964478,-0.017807007,0.0013284683,0.0029277802,0.008125305,-0.04208374,0.0335083,0.06976318,0.019363403,-0.016204834,-0.014793396,-0.041931152,-0.046020508,-0.038360596,0.015029907,0.009056091,0.009513855,0.037506104,-0.019897461,-0.031341553,0.008308411,0.0043907166,0.012794495,0.06982422,0.00623703,-0.0043754578,0.03262329,0.013023376,-0.046722412,0.039154053,0.03250122,0.030761719,-0.034179688,-0.013290405,0.018096924,0.02772522,-0.012588501,0.015823364,-0.021957397,0.03112793,-0.00020158291,0.019104004,0.026977539,-0.016708374,-0.018692017,-0.019134521,-0.031173706,0.031341553,0.013710022,-0.024353027,-0.035186768,-0.07183838,0.033691406,0.045684814,0.031341553,-0.003686905,0.013900757,-0.022354126,-0.008277893,-0.0770874,0.05178833,0.06750488,-0.01789856,-0.0070152283,0.019012451,-0.020431519,-0.04168701,-0.0058898926,-0.005935669,-0.03466797,-0.02168274,0.009605408,-0.050109863,-0.004463196,0.016921997,0.023910522,0.058807373,-0.010192871,-0.043518066,-0.020599365,-0.0052490234,0.0059928894,-0.033111572,-0.004627228,-0.012039185,0.019577026,0.024902344,-0.00491333,0.025405884,-0.008804321,-0.0013437271,-0.0037899017,-0.000119030476,-0.012252808,-0.042816162,0.012908936,-0.006149292,-0.05731201,0.0028152466,-0.0005464554,0.059753418,-0.048675537,0.03894043,-0.006275177,0.003255844,0.06762695,-0.011009216,-0.043823242,0.015823364,0.024124146,0.026367188,0.042907715,0.000074744225,-0.032196045,-0.020996094,0.059814453,-0.020889282,-0.01574707,0.00015175343,0.0051612854,0.033477783,-0.008377075,-0.06921387,-0.021560669,-0.007247925,-0.01260376,0.02267456,-0.02432251,0.0284729,-0.016174316,0.00497818,-0.034240723,-0.000021398067,-0.039764404,0.023223877,-0.008094788,-0.0020828247,-0.010971069,-0.0037727356,0.018417358,0.020019531,-0.023483276,-0.002494812,0.0579834,0.024139404,0.00048589706,-0.03466797,-0.036315918,-0.014755249,0.0041885376,0.025604248,0.03842163,0.011154175,0.053588867,-0.04473877,0.0056762695,0.032409668,0.022018433,0.031585693,-0.004878998,0.0065345764,-0.076049805,-0.050445557,-0.025009155,-0.050079346,0.03503418,0.015052795,0.007598877,0.056427002,0.012664795,-0.033447266,-0.03717041,0.02279663,-0.034240723,-0.013183594,0.05215454,-0.0031204224,-0.017303467,-0.0035572052,-0.004837036,0.011489868,0.032714844,0.011871338,0.021331787,0.066833496,0.050048828,0.0077209473,0.010665894,0.014656067,0.01574707,0.005332947,-0.03237915,-0.016967773,-0.010627747,0.026870728,-0.015838623,-0.021270752,-0.07562256,0.048553467,0.043518066,0.07171631,0.016189575,0.006855011,0.047607422,-0.014274597,0.014144897,-0.013374329,-0.027954102,-0.020401001,-0.053375244,0.03152466,-0.019683838,-0.0031394958,-0.0118255615,0.022003174,0.0021095276,0.020523071,-0.035095215,0.06124878,0.0124053955,-0.024139404,0.021591187,0.0006957054,0.045562744,0.057159424,-0.0413208,0.031433105,0.015670776,-0.046203613,-0.010818481,0.026031494,-0.017211914,0.0107040405,-0.057678223,-0.034057617,0.004333496,0.018188477,-0.042816162,-0.009757996,0.0034275055,0.01449585,0.03463745,-0.02243042,-0.007507324,-0.009223938,-0.017990112,-0.04714966,-0.014122009,-0.031982422,0.006515503,0.042388916,-0.03463745,0.0017414093,0.0076942444,-0.006511688,-0.013153076,0.009635925,0.017807007,-0.016967773,-0.02279663,0.025115967,0.008605957,0.0149002075,0.0035209656,0.025405884,0.021469116,0.025772095,0.050201416,0.011619568,-0.011978149,-0.066467285,0.016738892,-0.042510986,-0.009246826,0.014793396,-0.008163452,-0.0022563934,-0.017318726,-0.02407837,-0.034606934,0.0035037994,-0.022354126,0.0034275055,0.019012451,-0.032196045,-0.026382446,-0.049865723,-0.0038146973,0.00000590086,0.059692383,0.03213501,-0.0011167526,-0.07019043,-0.0056114197,0.022705078,0.0072364807,0.0211792,-0.014472961,-0.0015048981,-0.015731812,-0.017501831,-0.0070228577,-0.011146545,0.013969421,-0.0071525574,-0.00049829483,0.030059814,0.012939453,0.026687622,0.0058288574,0.017303467,0.03753662,-0.024932861,-0.00024330616,-0.013397217,0.03451538,0.0021095276,0.0013713837,-0.045654297,0.05307007,0.014793396,0.03286743,-0.041107178,0.006706238,0.0027427673,0.009941101,0.017959595,-0.01651001,-0.017028809,-0.009979248,-0.051879883,-0.070373535,0.04232788,-0.009803772,0.020553589,0.005458832,0.0049705505,0.018249512,0.0039749146,0.0052261353,0.024856567,-0.017730713,-0.0043907166,-0.023468018,-0.03729248,-0.017654419,-0.0045166016,-0.014060974,0.022628784,-0.027511597,0.012519836,0.0017232895,-0.023712158,0.021347046,-0.012138367,-0.0042419434,0.0309906,0.0051612854,0.024917603,0.045715332,0.0033454895,-0.033416748,0.019165039,0.00049495697,0.008079529,-0.015342712,0.04208374,0.03274536,-0.0029964447,-0.0158844,-0.0013113022,-0.008636475,-0.011657715,0.007171631,-0.007827759,0.015533447,-0.0031490326,-0.032836914,0.024459839,0.008255005,-0.026657104,-0.017547607,0.015220642,0.008781433,-0.04058838,0.015899658,0.02684021,0.07434082,-0.0184021,-0.008094788,0.005836487,0.024841309,0.029846191,0.022247314,-0.015258789,0.009033203,-0.011222839,0.023483276,0.0068855286,-0.007637024,0.0047073364,0.003692627,0.024002075,0.026565552,0.0059127808,-0.029846191,-0.021972656,-0.012718201,-0.015586853,-0.025390625,0.011993408,0.030654907,0.014625549,-0.022628784,0.01663208,0.008758545,-0.014862061,-0.017700195,-0.01322937,0.028533936,-0.010124207,-0.018951416,0.01676941,0.008308411,0.03692627,-0.051483154,-0.009307861,0.01663208,0.0008649826,-0.027236938,-0.0287323,-0.032958984,0.013000488,0.031951904,0.013381958,0.024856567,0.025650024,0.007774353,0.004928589,0.033569336,-0.00017476082,-0.017715454,-0.01838684,-0.038360596,-0.005771637,0.0011281967,-0.0019235611,-0.02645874,-0.0000013113022,-0.0143966675,-0.025146484,0.005756378,-0.00039100647,-0.0036563873,-0.017852783,0.006465912,0.03717041,0.0022506714,0.0099487305,-0.026260376,-0.025436401,0.0024738312,0.020706177,0.014564514,-0.059326172,0.01763916,-0.01109314,-0.0016908646,-0.006008148,0.020904541,0.023651123,0.025268555,0.0013237,0.02607727,-0.061462402,0.031280518,-0.029129028,0.013809204,0.020889282,-0.035095215,0.000875473,-0.016143799,-0.015945435,0.0423584,-0.022872925,-0.002008438,-0.0335083,-0.03390503,-0.012039185,-0.047302246,0.019012451,0.03881836,0.035125732,-0.016098022,0.0009860992,-0.009765625,-0.0037708282,-0.022018433,0.013450623,-0.008255005,0.013549805,0.018539429,0.007007599,-0.034423828,-0.031829834,-0.013175964,-0.0025482178,-0.041229248,-0.04937744,-0.0287323,-0.0024852753,-0.0077209473,-0.0017843246,-0.03491211,-0.025619507,-0.0009303093,-0.046844482,0.018341064,0.0066871643,0.018859863,0.010940552,-0.01638794,0.0054893494,0.0126953125,-0.007911682,0.03414917,0.009651184,0.004306793,-0.04083252,0.016357422,0.033477783,0.027236938,-0.0073394775,-0.00024092197,-0.0030517578,-0.027648926,-0.054626465,-0.014923096,-0.003004074,-0.0005555153,-0.010757446,0.00028252602,-0.049346924,0.0032024384,-0.017547607,0.00023281574,0.01979065,0.01751709,0.015106201,0.006252289,0.007858276,-0.01902771,-0.021514893,-0.03137207,0.02709961,0.010192871,0.0003745556,0.016647339,0.04840088,0.014587402,-0.014511108,0.0061073303,0.010604858,0.021331787,-0.02519226,0.003211975,-0.012702942,0.0064697266,-0.013435364,-0.016494751,-0.032836914,-0.000600338,0.09442139,0.0039749146,-0.02368164,-0.025375366,-0.013618469,0.017410278,0.037261963,-0.035308838,-0.007587433,-0.03189087,0.02218628,-0.028625488,0.0087509155,0.009048462,0.027359009,-0.01701355,-0.057373047,-0.01777649,-0.009147644,-0.016952515,-0.053375244,-0.024230957,-0.06542969,-0.00048661232,-0.011657715,-0.017532349,0.0054893494,0.011955261,-0.004714966,-0.093566895,-0.001709938,0.049194336,0.0022621155,0.01247406,-0.019119263,0.022750854,0.021957397,-0.04043579,-0.016845703,0.034454346,-0.03540039,-0.0028915405,-0.026473999,0.023391724,-0.012496948,-0.017242432,0.02355957,0.007156372,0.017288208,-0.01777649,0.0041618347,-0.014533997,0.015174866,-0.005859375,0.024307251,-0.006500244,-0.0037345886,0.030838013,-0.04385376,0.018539429,0.03173828,0.0016098022,0.0045700073,0.026565552,0.037506104,-0.03567505,-0.015365601,0.025985718,0.013824463,0.04473877,-0.016830444,0.035614014,0.0050468445,-0.0087890625,0.02809143,-0.011047363,-0.025283813,-0.045410156,-0.026306152,0.027359009,-0.00592041,0.01133728,-0.0082092285,0.0029354095,0.014770508,-0.009498596,0.01499939,-0.0079956055,-0.03010559,-0.019836426,0.0062179565,0.010139465,-0.00983429,0.0060920715,0.03857422,0.022766113,0.036315918,0.011909485,-0.021102905,0.005466461,0.015930176,-0.015563965,0.009681702,0.03326416,-0.0026435852,0.020812988,0.01272583,0.0035533905,-0.0340271,-0.0014228821,-0.031829834,-0.019378662,0.0020179749,-0.002691269,-0.02130127,-0.005317688,0.010559082,0.0041236877,-0.034332275,0.013954163,-0.02708435,-0.030426025,-0.00008350611,-0.015609741,0.009918213,-0.0065841675,0.008430481,0.01322937,0.0017652512,0.050048828,0.005962372,-0.0037765503,0.041290283,0.027435303,0.0158844,-0.022109985,-0.004016876,-0.012886047,-0.003686905,-0.0039901733,-0.03842163,0.0026988983,0.034118652,-0.018356323,-0.003730774,-0.00484848,0.027130127,-0.007701874,0.008728027,0.0047721863,0.016571045,-0.013877869,0.04046631,-0.03137207,0.0053863525,0.01600647,-0.007911682,-0.012420654,-0.005268097,-0.042297363,0.024963379,-0.012245178,-0.008995056,0.043182373,-0.00440979,0.014404297,-0.025726318,-0.0073280334,0.005153656,-0.03475952,-0.02520752,0.029876709,0.0011835098,0.0020008087,0.01878357,-0.028839111,0.040222168,-0.03866577,0.028839111,-0.010383606,0.001906395,-0.0018625259,-0.018005371,-0.019302368,-0.003358841,-0.002363205,-0.0031089783,-0.0019207001,0.048858643,0.016616821,0.028945923,0.04928589,0.0143966675,-0.008880615,-0.04333496,-0.02897644,0.010025024,-0.012878418,0.012481689,-0.02255249,0.053009033,0.042816162,0.0038795471,0.02192688,0.02772522,0.035339355,0.010887146,0.0059127808,-0.0070610046,0.0005993843,-0.0027198792,0.032226562,-0.004085541,0.04763794,-0.028396606,0.030883789,0.022369385,0.019958496,-0.026992798,0.0390625,0.068237305,0.012870789,-0.013916016,0.040802002,0.005268097,-0.0065193176,-0.01360321,-0.022415161,0.043548584,0.008956909,0.050567627,0.055541992,0.012062073,-0.0040245056,0.026641846,-0.029388428,-0.0309906,0.07141113,0.020446777,-0.019042969,-0.01890564,-0.009819031,0.0064926147,-0.055023193,-0.034332275,0.016342163,-0.010940552,0.012687683,-0.012336731,0.00043654442,-0.015403748,0.02545166,0.04006958,0.018630981,-0.016616821,0.038208008,0.0236969,-0.0023956299,0.020385742,-0.0012311935,0.030776978,-0.030883789,-0.021591187,0.012870789,0.013069153,-0.0113220215,-0.012535095,0.015563965,0.011955261,0.052459717,0.045135498,-0.024658203,0.01096344,0.038513184,0.013221741,-0.0019073486,0.0501709,0.030776978,0.010169983,0.047790527,0.034301758,0.02168274,-0.039611816,0.018737793,0.0012340546,0.007282257,-0.0041389465,-0.012054443,0.003107071,-0.022445679,0.031219482,0.0018205643,-0.011619568,0.019989014,0.023361206,0.0074768066,-0.004119873,-0.0037403107,0.009521484,-0.016647339,0.0034179688,0.020370483,-0.01373291,0.024673462,0.00016665459,0.0340271,-0.00881958,0.03186035,-0.01071167,-0.009437561,-0.0030231476,0.026794434,-0.03881836,-0.0021629333,-0.003030777,0.0056991577,-0.05053711,0.021850586,0.034606934,-0.023223877,0.03555298,0.0044517517,0.0031909943,0.0118255615,0.022125244,0.0029735565,0.004009247,-0.007949829,-0.029663086,0.03326416,0.04537964,0.004459381,0.018188477,-0.012557983,0.008003235,0.012550354,-0.0010786057,-0.006652832,-0.017364502,-0.025878906,-0.04196167,0.0038414001,0.02407837,0.018417358,0.028717041,0.003326416,-0.017944336,0.008033752,0.028793335,0.0075416565,0.006679535,-0.014137268,0.029144287,-0.016342163,0.05871582,0.03717041,-0.0006403923,0.025527954,-0.015510559,-0.03125,0.0047073364,0.00012505054,0.021850586,-0.011688232,0.008743286,-0.0006327629,0.03062439,-0.014472961,-0.041503906,0.0047950745,-0.008110046,-0.01739502,-0.026138306,0.008132935,0.007080078,0.02734375,0.043518066,0.0056648254,-0.03149414,0.069885254,-0.013473511,0.052703857,-0.0054130554,-0.0028839111,0.04800415,0.03640747,0.040008545,0.026611328,0.023513794,-0.029174805,0.012031555,0.041748047,0.019058228,0.010772705,0.0014829636,-0.033721924,0.03756714,0.007499695,0.021728516,-0.01776123,-0.0035686493,0.011787415,0.0062675476,0.003873825,0.008865356,-0.006340027,-0.00774765,0.037261963,-0.029434204,-0.01826477,-0.0121154785,-0.0054740906,0.036895752,0.0032100677,0.0031852722,-0.005897522,-0.022705078,0.019012451,-0.022888184,-0.029876709,0.003622055,0.024612427,-0.0368042,-0.007587433,-0.0038642883,0.012130737,-0.0209198,0.026397705,0.013214111,-0.0018491745,0.0011825562,0.04244995,-0.015975952,0.033172607,-0.019104004,0.02734375,0.021850586,0.0011177063,-0.023025513,-0.0013809204,0.008094788,-0.016021729,0.0049743652,0.03488159,-0.015350342,-0.0030136108,-0.0003633499,-0.012763977,0.010810852,0.0015163422,-0.0058135986,0.010749817,-0.015472412,-0.008369446,0.00095129013,0.0022583008,0.008110046,0.015655518,-0.0010147095,-0.008308411,0.014060974,0.04296875,0.020446777,-0.044281006,0.0033111572,0.0060424805,0.012504578,-0.03010559,-0.0073394775,0.005252838,-0.030090332,0.012893677,0.02355957,0.002790451,0.017547607,-0.018508911,0.0016841888,0.017456055,0.016113281,0.018875122,-0.004299164,0.004245758,0.023635864,-0.01979065,-0.0046043396,-0.014678955,-0.006904602,0.009925842,0.017822266,-0.014305115,-0.026641846,0.033569336,-0.004119873,0.01927185,0.009307861,-0.015670776,0.016281128,-0.012428284,-0.008308411,0.002456665,0.018630981,-0.011894226,-0.0063209534,-0.013290405,0.023117065,0.055725098,-0.020217896,-0.008079529,0.019104004,0.013397217,0.016921997,0.033843994,0.004501343,0.03253174,0.03149414,-0.02999878,-0.019012451,0.008361816,-0.00016462803,-0.034210205,0.02128601,-0.014564514,-0.013977051,0.019378662,0.018341064,-0.004383087,-0.019958496,-0.020065308,-0.006664276,-0.013977051,0.012336731,-0.011001587,0.009254456,-0.0107040405,-0.005241394,0.009681702,-0.014457703,-0.04711914,-0.028945923,-0.002149582,-0.0068588257,-0.04525757,0.008720398,-0.028869629,0.006866455,-0.013175964,0.0029182434,-0.009719849,0.03378296,-0.011398315,-0.016601562,0.011138916,0.01878357,0.016281128,-0.0012655258,0.029174805,-0.014274597,-0.028579712,-0.013885498,0.0036506653,-0.0079574585,0.0149002075,-0.00095796585,0.041137695,0.019989014,-0.0049972534,-0.0026550293,-0.0206604,-0.010299683,-0.006023407,-0.012039185,-0.01687622,0.023773193,0.010246277,-0.0047836304,-0.013031006,0.043884277,-0.023239136,-0.019165039,0.025726318,0.044403076,0.003129959,0.032165527,-0.0034561157,-0.016418457,-0.009353638,0.0025367737,-0.015052795,0.0028762817,0.016525269,0.0048828125,-0.009918213,-0.005203247,0.023605347,0.0009279251,-0.0070343018,0.023880005,-0.004688263,-0.005302429,0.025268555,0.014862061,0.0078125,-0.015533447,-0.020385742,0.017852783,0.029922485,0.015655518,0.0038318634,-0.010627747,0.018722534,-0.011459351,0.010108948,0.022079468,-0.015365601,-0.037597656,-0.019699097,-0.04257202,0.01210022,0.007499695,0.009338379,-0.006504059,0.007926941,-0.030914307,-0.024108887,-0.01637268,0.029403687,0.02230835,-0.0059661865,-0.014953613,0.009254456,0.014572144,-0.033569336,0.00066041946,-0.033172607,-0.039611816,-0.00025892258,-0.020263672,0.008666992,0.005142212,-0.008758545,0.0005941391,-0.00869751,0.0013771057,0.0047683716,0.034576416,-0.008628845,-0.008529663,0.027770996,0.0098724365,-0.025253296,0.017990112,-0.010169983,-0.005596161,0.025253296,0.0035305023,0.0030555725,-0.022354126,0.030517578,-0.008361816,-0.0049705505,0.020202637,0.002614975,0.0059509277,-0.030548096,0.018508911,0.007545471,-0.006248474,0.03161621,-0.03186035,-0.017868042,0.0039100647,-0.021133423,-0.032104492,0.0009860992,0.02420044,0.037994385,-0.002248764,0.03475952,-0.0072288513,-0.012130737,0.017669678,0.00415802,-0.020492554,-0.0027942657,0.038238525,0.011810303,-0.009460449,-0.004562378,-0.01234436,-0.034088135,-0.010398865,0.023742676,-0.0061569214,-0.014953613,0.032318115,0.008346558,0.04510498,0.00067949295,0.013671875,0.01838684,0.017211914,0.020858765,-0.009994507,0.04876709,0.005302429,-0.039398193,0.0065727234,0.0029888153,-0.029129028,-0.01902771,-0.0050621033,0.0037670135,-0.031204224,0.010604858,-0.0010328293,0.027160645,-0.024749756,0.0062446594,-0.028686523,-0.0032310486,-0.039794922,-0.01423645,-0.019546509,0.012382507,0.041229248,0.006011963,0.025375366,0.010482788,-0.021347046,0.015777588,0.04446411,0.0035896301,-0.026794434,-0.021575928,0.008506775,0.0043678284,0.007331848,0.010902405,-0.012870789,-0.011657715,-0.005207062,-0.015853882,0.011871338,0.0010671616,0.014923096,-0.0028457642,0.0033111572,-0.010604858,0.026229858,-0.004600525,-0.0040130615,0.010871887,0.019882202,0.031402588,0.028137207,-0.01159668,0.021392822,0.023010254,-0.041046143,0.054840088,0.00016438961,0.023910522,-0.018493652,-0.0046043396,-0.035095215,-0.028015137,-0.00806427,-0.0032482147],"createdAt":"2026-04-18T19:59:51.150Z","updatedAt":"2026-04-22T02:31:45.149Z","lastSeenAt":"2026-04-22T02:31:45.149Z","tsv":"'/api/v1/benefits/99':54,160 '/request':13,28,154 '0.02':12,27,76,153 '000':71 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':203 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':206 '20':70 'Base network API' 'USDC micropayment API' 'accept':195 'access':7,22,41,59,171 'across':110 'address':202 'advertis':108 'ai':120 'analysi':124 'analyt':114 'api':6,21,40,58,82,170 'application/json':214 'attach':93 'base':9,24,49,72,80,208 'base-network' 'beyond':167,217 'broader':106 'call':4,19,65 'caller':91 'categori':112 'challeng':189 'classif':127 'commit':88 'confirm':190 'connect':224 'content':230 'convers':144 'correspond':176 'crypto-paid API' 'data':113,117 'document':166,215 'embed':128 'endpoint':52,109,147,161,182,192 'estim':138 'exchang':133 'export':118 'feed':132 'financ':129 'four':111 'function':163 'gas':137 'generat':145 'geocod':142 'header':98 'howev':157 'infrastructur':140 'insight':119 'json-response' 'key':83 'label':56,172 'land':185,219 'learn':122 'limit':85 'list':149 'live':194 'lowpaymentfee' 'lowpaymentfee.com':31 'machin':121 'metric':115 'mime':211 'name':181 'need':90 'network':50 'no-api-key' 'offer':32 'page':186,216,220 'pay':2,17,37 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':36 'payment':45,66,97,103,200 'per':3,18,38,64 'per-cal':63 'platform':107 'point':156 'post':196 'premium':5,20,57,169 'premium API endpoint' 'premium-api-access' 'price':131,155 'prompt':226 'proof':104 'protocol':46 'quot':136 'rate':84,134 'report':116 'request':39,197 'requir':61 'respons':210 'return':221 'sentiment':123 'settl':78,199 'simpli':92 'specif':159 'substant':229 'suit':34 'summar':126 'text':125 'token':135 'type':212 'unit':73 'upfront':87 'usd':77 'usdc':15,30,75,205 'usdc-settlement' 'use':204 'util':141 'valid':101,143 'via':10,25,42 'wallet':225 'web3':130 'x':96 'x-payment':95 'x402':11,26,44,102,188 'x402 API' 'x402-payment'","prices":[{"id":"892b8efb-34d7-4853-820b-12b18aa01f8e","listingId":"69be3bbe-c5b5-4f16-95ed-b654cbe50ecb","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/benefits/99","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:51.150Z"}],"sources":[{"listingId":"69be3bbe-c5b5-4f16-95ed-b654cbe50ecb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/99","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:51.150Z","lastSeenAt":"2026-04-22T02:31:45.149Z"}],"details":{"listingId":"69be3bbe-c5b5-4f16-95ed-b654cbe50ecb","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/99 \\\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 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/benefits/99"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/benefits/99"},{"claim":"All listed endpoints are priced at $0.02/request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API data with per-request USDC micropayments on Base","Agent-driven workflows that need keyless, pay-as-you-go API access","Programmatic access to services without subscription or rate-limit overhead"],"bestFor":["Developers wanting zero-commitment, pay-per-use API access","AI agents with x402-compatible payment capabilities","Users who prefer crypto-native micropayments over traditional API key billing"],"notFor":["Users who need detailed API documentation or OpenAPI schemas before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.767Z"},"updatedAt":"2026-04-22T02:31:45.149Z"}}