{"id":"f6f58e71-54bb-42cf-9ba3-00c00f5b44c7","shortId":"kLL4HD","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall on the Base network. The site hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request, settled in USDC on Base with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/benefits/77` is listed as \"Premium API Access\" and returns a valid x402 challenge with a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals), which equals $0.02. Payment is made via the x402 exact scheme, with a 300-second timeout. The endpoint accepts POST requests and returns application/json.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no examples available. The exact functionality behind the `/api/v1/benefits/77` path is unclear; the generic name \"Premium API Access\" does not describe what data or service is returned. Agents should be aware that without documented input/output schemas, integration requires experimentation.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","no-api-key","post-method"],"categories":["api","infrastructure"],"synonyms":["premium API","paid API access","x402 API","USDC API","Base network API","lowpaymentfee","micropayment API","pay-per-call API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet'","No OpenAPI or schema definition found for this endpoint","The purpose of /api/v1/benefits/77 ('Premium API Access') is unclear — no description of inputs or outputs","No examples of request bodies or response payloads available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/77","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/77","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 challenge, confirming it is operational. However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the endpoint name 'Premium API Access' is generic and undescriptive. Without knowing what the endpoint actually returns, this is effectively a stub listing.","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":"2026-04-19T16:37:46.028Z","embedding":[-0.021240234,-0.020309448,0.06427002,0.028930664,0.010414124,-0.026519775,-0.025802612,0.055145264,0.07458496,-0.06530762,0.037200928,-0.05142212,-0.027816772,-0.043701172,-0.024551392,0.017684937,-0.004962921,0.016174316,-0.06121826,0.040100098,0.036315918,-0.009735107,-0.012863159,0.048095703,-0.0022602081,-0.025985718,-0.0129776,-0.023971558,-0.008773804,-0.03262329,0.020065308,-0.02281189,-0.004306793,0.016967773,-0.015304565,-0.011497498,-0.004058838,0.049316406,0.029327393,-0.010498047,0.0043754578,-0.059906006,-0.0031929016,-0.001039505,-0.050720215,-0.008163452,0.009796143,-0.02748108,-0.012046814,0.010154724,-0.033813477,-0.011238098,-0.011512756,-0.0022144318,0.021270752,0.0022735596,-0.005207062,-0.007797241,-0.000027358532,0.004917145,-0.005844116,-0.057434082,-0.01878357,0.01600647,0.008979797,0.050842285,-0.006095886,0.045806885,0.009841919,0.051086426,0.04827881,0.05810547,0.034179688,0.02027893,-0.00365448,-0.006111145,-0.0027065277,0.06591797,-0.01234436,-0.0126953125,-0.017547607,-0.009742737,-0.056030273,-0.003440857,-0.014808655,-0.042419434,-0.022109985,0.0020618439,-0.031280518,0.032836914,-0.06903076,-0.01473999,-0.020065308,0.014953613,0.008110046,0.00095415115,-0.029678345,0.019546509,-0.013847351,0.022491455,0.008621216,-0.04522705,0.014083862,0.023452759,0.0625,0.027633667,0.030944824,0.025283813,0.0073928833,-0.023223877,-0.02444458,0.009437561,0.0036239624,-0.0069732666,0.015556335,0.013366699,-0.026519775,0.014411926,-0.0021400452,0.017333984,-0.04727173,0.045715332,0.027755737,-0.027297974,0.013954163,-0.04559326,-0.0012025833,0.011116028,-0.025039673,-0.021011353,0.010055542,0.01737976,0.044555664,-0.01889038,-0.034820557,-0.0093307495,-0.009254456,-0.02960205,-0.04156494,-0.019088745,0.023101807,-0.030899048,0.038909912,0.028198242,-0.10321045,-0.016143799,-0.044006348,0.011230469,-0.038757324,-0.008850098,-0.023406982,0.015457153,-0.02293396,-0.0155181885,-0.014526367,-0.021713257,-0.002916336,0.034698486,-0.016403198,0.039154053,-0.0058135986,0.02279663,-0.004814148,0.0070762634,0.03668213,0.045135498,-0.001241684,-0.08050537,-0.086242676,-0.036193848,-0.004257202,-0.02218628,-0.03591919,-0.0039978027,0.007633209,-0.08721924,-0.018234253,-0.01725769,0.00030493736,-0.045684814,0.00012910366,-0.019927979,0.010726929,-0.01638794,-0.06555176,-0.023254395,-0.030899048,0.079956055,0.010757446,0.0042648315,0.040161133,-0.016220093,0.05404663,0.0030612946,-0.033843994,-0.03125,0.012184143,-0.027328491,0.027038574,0.01537323,0.0067481995,-0.05117798,0.045135498,0.06567383,0.009246826,-0.022583008,0.0003376007,-0.041656494,-0.038208008,-0.031143188,0.003414154,0.009338379,0.0033550262,0.030532837,-0.01083374,-0.039642334,-0.00042390823,0.0062446594,0.014465332,0.06121826,0.0068359375,-0.001914978,-0.0038337708,0.018493652,-0.025741577,0.03753662,0.037719727,0.024291992,-0.02571106,-0.0178833,0.017028809,0.027359009,-0.023513794,0.005355835,-0.016967773,0.029678345,0.006904602,0.020248413,0.032226562,-0.020446777,-0.025177002,-0.035461426,-0.009185791,0.030639648,0.01071167,-0.03479004,-0.05029297,-0.074157715,0.023910522,0.05014038,0.03353882,0.008293152,0.003868103,-0.02583313,-0.009521484,-0.07043457,0.05291748,0.08258057,-0.010894775,-0.008041382,0.023208618,-0.021865845,-0.021148682,-0.019607544,-0.0069084167,-0.01966858,-0.015838623,0.0035858154,-0.038391113,0.00024020672,0.016708374,0.030899048,0.05532837,-0.021697998,-0.051635742,-0.028823853,0.017410278,0.0035133362,-0.022659302,-0.004447937,-0.011924744,0.023712158,0.028930664,-0.000086188316,0.042785645,-0.0034942627,0.022750854,-0.00040125847,-0.021011353,-0.02267456,-0.020477295,0.027496338,0.008605957,-0.07299805,0.015586853,-0.00049591064,0.060791016,-0.04473877,0.038482666,-0.009597778,0.005882263,0.07366943,-0.011245728,-0.04348755,0.017303467,0.021102905,0.04321289,0.036376953,-0.0056381226,-0.021377563,-0.0016307831,0.0569458,-0.0076828003,0.0017776489,-0.00056028366,0.008934021,0.031585693,0.0025253296,-0.054473877,-0.019241333,-0.021774292,-0.02079773,0.019241333,-0.03656006,0.023025513,-0.022140503,0.0037384033,-0.02923584,0.0035419464,-0.04260254,0.016403198,-0.013267517,-0.01146698,-0.012321472,-0.022033691,0.017868042,0.030639648,-0.013381958,0.0031394958,0.046051025,0.01701355,-0.01197052,-0.0390625,-0.021972656,-0.020248413,0.014030457,0.033691406,0.046295166,0.015007019,0.044830322,-0.038269043,0.019485474,0.03111267,0.011650085,0.0413208,-0.004386902,0.021514893,-0.056549072,-0.053131104,-0.025115967,-0.053497314,0.026992798,0.009475708,0.011878967,0.047302246,0.007095337,-0.015975952,-0.031982422,0.034240723,-0.039276123,0.0037345886,0.042510986,-0.0046577454,-0.03656006,-0.00932312,0.013336182,0.005191803,0.037109375,0.015914917,-0.006855011,0.06878662,0.04159546,-0.008415222,0.018875122,0.02558899,0.0070152283,0.0042037964,-0.024612427,-0.024002075,-0.018493652,0.020889282,-0.007865906,-0.014732361,-0.078430176,0.03515625,0.03125,0.058654785,0.010864258,0.013320923,0.036315918,-0.0079422,-0.0038852692,-0.027374268,-0.02708435,-0.017486572,-0.050567627,0.027435303,-0.019363403,-0.010025024,-0.026168823,0.034698486,0.0059013367,0.022659302,-0.043151855,0.06384277,0.007232666,-0.016494751,0.02835083,-0.0023975372,0.0446167,0.045715332,-0.039642334,0.022018433,0.016571045,-0.040222168,-0.009132385,0.032470703,-0.003293991,-0.017456055,-0.059020996,-0.033325195,0.0066337585,-0.0032958984,-0.053344727,-0.01134491,0.015472412,0.026779175,0.02619934,-0.023590088,-0.019805908,0.0059432983,-0.032196045,-0.057647705,-0.012466431,-0.04043579,0.016937256,0.054138184,-0.036865234,0.00374794,-0.002483368,-0.0069885254,-0.0087890625,0.018478394,0.007232666,-0.00381279,-0.040802002,0.024917603,0.0076522827,0.008911133,0.019592285,0.019729614,0.026412964,0.007827759,0.05731201,0.007537842,-0.017044067,-0.058746338,0.009010315,-0.04901123,0.0051193237,-0.0025196075,-0.007686615,-0.0030784607,-0.021774292,-0.026504517,-0.027389526,-0.0046195984,-0.015853882,0.013580322,0.02658081,-0.031188965,-0.017196655,-0.05130005,-0.017074585,0.0076942444,0.08520508,0.042877197,-0.011421204,-0.06750488,-0.027679443,0.028549194,-0.000813961,0.005962372,-0.016815186,-0.0017461777,-0.009719849,-0.03479004,-0.020721436,-0.030776978,0.025100708,0.0042915344,-0.0234375,0.025299072,-0.0000461936,0.009521484,-0.0047950745,0.0070610046,0.039916992,-0.029434204,0.01247406,-0.0546875,0.01889038,0.0015134811,0.0018358231,-0.05029297,0.051605225,0.010398865,0.037078857,-0.030471802,0.008773804,0.0028133392,0.02331543,0.018966675,-0.00687027,-0.012687683,0.0015239716,-0.04486084,-0.0713501,0.034698486,-0.016204834,0.020645142,-0.00365448,0.013015747,0.033843994,-0.00051021576,0.0031394958,0.026443481,-0.019302368,-0.014137268,-0.031585693,-0.038970947,-0.014411926,0.0028457642,-0.014976501,0.010063171,-0.017852783,0.015113831,-0.0053482056,-0.020751953,0.026412964,-0.0020446777,0.0047416687,0.03387451,0.008842468,0.015960693,0.042175293,0.006088257,-0.025268555,0.028747559,-0.0076408386,-0.00017118454,-0.013725281,0.041870117,0.025970459,-0.009735107,-0.0050086975,0.0024967194,-0.010269165,-0.020614624,-0.015525818,-0.0061912537,0.03729248,0.010681152,-0.032073975,0.028274536,0.011070251,-0.027786255,-0.006511688,0.015449524,0.026062012,-0.038970947,0.028045654,0.013435364,0.059753418,-0.020950317,-0.0076942444,0.015403748,0.01737976,0.024047852,0.024536133,-0.015129089,0.008308411,-0.009674072,0.018875122,0.0021572113,0.0018720627,0.00856781,-0.0052223206,0.022491455,0.028121948,0.022659302,-0.036956787,-0.017562866,0.0027236938,-0.009414673,-0.01499176,0.014854431,0.027954102,0.006580353,-0.015716553,0.02255249,0.019317627,-0.030670166,-0.014953613,-0.022949219,0.046295166,-0.027496338,-0.005710602,0.01486969,0.003774643,0.02748108,-0.04260254,0.0012331009,0.009803772,0.010917664,-0.016098022,-0.048736572,-0.036743164,0.01158905,0.022598267,-0.002861023,0.011665344,0.02746582,-0.0046958923,0.0070877075,0.017929077,0.00044441223,-0.018341064,-0.02029419,-0.042541504,-0.010719299,0.0045280457,-0.0006785393,-0.02923584,0.0020771027,-0.02609253,-0.034454346,-0.000062704086,-0.008071899,-0.008628845,-0.018341064,0.018432617,0.035949707,-0.00031924248,0.015197754,-0.021255493,-0.020141602,0.0070877075,0.007850647,0.016540527,-0.04776001,0.013519287,-0.019332886,-0.004512787,-0.007129669,0.016235352,0.016555786,0.017730713,0.0010557175,0.008125305,-0.045166016,0.030639648,-0.030334473,0.014785767,0.019958496,-0.040405273,-0.0072746277,-0.023391724,-0.024520874,0.030639648,-0.009796143,-0.00077962875,-0.029708862,-0.019744873,-0.012306213,-0.041870117,0.021942139,0.033935547,0.03488159,-0.016143799,0.005947113,0.012718201,-0.00005632639,-0.00667572,0.00434494,0.00035643578,0.025970459,0.023864746,-0.0006570816,-0.039001465,-0.02229309,-0.0038471222,-0.00013065338,-0.052703857,-0.050750732,-0.01751709,0.016616821,-0.0045776367,0.009063721,-0.03265381,-0.013183594,0.0075035095,-0.04046631,0.007904053,0.013626099,0.022872925,0.017700195,-0.016555786,0.004966736,0.025680542,-0.020858765,0.024963379,-0.0033550262,-0.00026798248,-0.03390503,0.0022583008,0.041534424,0.027557373,0.0048675537,-0.0021820068,0.005584717,-0.02619934,-0.050231934,-0.010696411,-0.0043945312,0.0036373138,0.0039405823,-0.0044441223,-0.049224854,-0.008964539,-0.020523071,-0.009063721,0.019180298,0.018676758,0.018249512,-0.004890442,0.00242424,-0.007411957,-0.0062789917,-0.03591919,0.015487671,0.01222229,-0.0004761219,0.013175964,0.0524292,0.012825012,-0.0065307617,-0.005722046,-0.0019102097,0.016967773,-0.029327393,0.0048103333,-0.014892578,0.009651184,-0.008262634,-0.018218994,-0.03817749,0.003929138,0.08294678,0.00015485287,0.011138916,-0.021957397,-0.015541077,0.0146865845,0.034820557,-0.059417725,-0.014175415,-0.045532227,0.021606445,-0.025421143,0.020507812,0.014007568,0.014289856,-0.028045654,-0.050750732,-0.009033203,0.016204834,-0.012466431,-0.046539307,-0.020645142,-0.048095703,-0.01374054,-0.014427185,-0.01739502,0.004989624,0.012458801,-0.01133728,-0.09399414,0.0075569153,0.049591064,-0.000087320805,0.012466431,-0.03186035,0.019424438,0.016204834,-0.034118652,-0.011306763,0.029067993,-0.027633667,-0.016693115,-0.023651123,0.021911621,-0.0155181885,-0.021438599,0.025543213,0.005645752,0.019348145,-0.015335083,0.0029296875,-0.011039734,0.015777588,-0.011878967,0.018188477,-0.003129959,-0.0060691833,0.026443481,-0.04989624,0.011268616,0.023742676,-0.0062026978,0.0027217865,0.02809143,0.031143188,-0.03829956,-0.011917114,0.036590576,0.010032654,0.03338623,-0.029678345,0.042144775,0.01374054,-0.012260437,0.024124146,-0.016586304,-0.03466797,-0.052734375,-0.034332275,0.01928711,0.012817383,0.012908936,-0.0060920715,-0.0044021606,0.013191223,-0.012680054,0.009140015,-0.013175964,-0.031433105,-0.015777588,0.0033245087,0.0104522705,-0.0048713684,0.0003874302,0.03161621,0.020812988,0.04232788,0.00037050247,-0.006690979,0.004234314,0.011894226,-0.01197052,0.001996994,0.01525116,0.015419006,0.012496948,0.014877319,0.00642395,-0.044006348,-0.010726929,-0.028549194,-0.011642456,0.016098022,0.004798889,-0.013801575,-0.0012073517,0.0012578964,-0.0022964478,-0.033477783,0.020950317,-0.035369873,-0.029205322,-0.0034809113,-0.011039734,-0.0024375916,0.0020008087,0.0030021667,0.006542206,0.010551453,0.06451416,0.008407593,0.0012245178,0.024307251,0.030151367,0.01133728,-0.033111572,-0.008529663,-0.00031375885,-0.0066871643,0.0030956268,-0.02255249,0.0072746277,0.030288696,-0.021957397,0.0071792603,0.00067806244,0.031051636,-0.008308411,0.018615723,0.0011892319,0.012550354,-0.012786865,0.034179688,-0.04220581,-0.0070533752,0.03265381,-0.008842468,-0.0027637482,-0.01991272,-0.03363037,0.027191162,-0.0022964478,-0.023513794,0.03213501,-0.0055236816,0.026855469,-0.024993896,-0.008628845,-0.005542755,-0.020996094,-0.03186035,0.038208008,-0.0040359497,-0.009864807,0.030838013,-0.02923584,0.03225708,-0.04559326,0.021728516,0.003452301,-0.014839172,-0.014526367,-0.011909485,-0.024002075,-0.0008263588,-0.01965332,-0.0049362183,0.0017757416,0.055358887,0.017700195,0.032440186,0.03363037,0.01133728,0.00969696,-0.041137695,-0.02772522,-0.004966736,-0.027038574,0.012916565,-0.021072388,0.050872803,0.040283203,-0.00869751,0.02961731,0.03866577,0.026062012,-0.0045280457,0.022827148,0.000051379204,0.007419586,-0.011146545,0.030288696,0.005558014,0.047058105,-0.031677246,0.01586914,0.010292053,0.022460938,-0.018096924,0.031829834,0.08117676,0.02720642,0.0011320114,0.030899048,0.006362915,-0.010414124,-0.011054993,-0.02406311,0.050842285,0.0027275085,0.047912598,0.04019165,0.0079956055,-0.009170532,0.030151367,-0.023605347,-0.033996582,0.060913086,0.017852783,-0.022598267,-0.006942749,-0.010314941,0.016174316,-0.050872803,-0.027160645,0.00762558,0.0054473877,0.00687027,-0.012168884,-0.0056762695,-0.018997192,0.031463623,0.019210815,0.020568848,-0.013679504,0.022750854,0.026321411,0.0057258606,0.02835083,0.0107040405,0.03503418,-0.029815674,-0.021865845,0.006450653,0.019058228,-0.009277344,0.002067566,0.01890564,0.012680054,0.05215454,0.03387451,-0.019989014,-0.007255554,0.02998352,0.012062073,0.0039100647,0.04638672,0.039031982,0.004005432,0.033721924,0.048187256,0.012893677,-0.037994385,0.017242432,-0.0049972534,0.01612854,-0.00075674057,-0.026672363,0.006034851,-0.0026245117,0.024017334,0.0009446144,-0.0015230179,0.017684937,0.027236938,0.016647339,-0.0010490417,-0.010345459,0.0093307495,-0.007850647,-0.0005569458,0.012962341,-0.011199951,0.021820068,0.0056037903,0.029464722,-0.015777588,0.022918701,-0.009017944,-0.025497437,-0.007358551,0.023880005,-0.039367676,-0.002275467,-0.0021858215,-0.004962921,-0.041259766,0.010749817,0.027877808,-0.011566162,0.03805542,0.0140686035,0.0043525696,0.006629944,0.022460938,0.017913818,-0.0096588135,-0.014152527,-0.018798828,0.022521973,0.04727173,0.00308609,0.013793945,-0.0017004013,-0.0026187897,0.020889282,-0.011306763,0.0018053055,-0.012779236,-0.016342163,-0.048919678,0.0050964355,0.03543091,0.01802063,0.03161621,-0.0040283203,-0.01940918,0.0027561188,0.026123047,0.013847351,0.010910034,-0.023147583,0.023391724,-0.009880066,0.04248047,0.028686523,-0.004348755,0.022323608,-0.029296875,-0.015319824,0.011993408,-0.012107849,0.02281189,-0.00090408325,0.0007481575,-0.018493652,0.016403198,-0.015525818,-0.040771484,0.004383087,-0.021057129,-0.009407043,-0.02947998,0.007751465,0.0067443848,0.015403748,0.045318604,0.02078247,-0.02835083,0.070129395,-0.01626587,0.054016113,-0.027816772,-0.003004074,0.052124023,0.05267334,0.035125732,0.023071289,0.019897461,-0.032836914,0.0060043335,0.03845215,0.022247314,0.0051612854,0.0023498535,-0.024124146,0.040161133,0.00894165,0.025054932,-0.012420654,0.005771637,0.006126404,-0.0057678223,-0.009902954,0.002790451,0.0042266846,0.008346558,0.04156494,-0.031143188,-0.018325806,-0.017440796,-0.012268066,0.034820557,-0.0006928444,0.0009446144,-0.0035953522,-0.026519775,0.0126571655,-0.028060913,-0.0068893433,0.0046920776,0.031585693,-0.0435791,-0.0050201416,0.0006599426,0.02053833,-0.029159546,0.026351929,0.010246277,-0.014381409,0.01574707,0.037597656,-0.007598877,0.036315918,-0.013153076,0.02885437,0.03729248,0.00051259995,-0.01864624,0.015319824,0.006122589,-0.019332886,0.006580353,0.03164673,-0.004852295,0.0087509155,0.0026931763,-0.019348145,0.0073509216,0.013717651,-0.00060606,-0.00066661835,-0.009674072,-0.0093307495,0.0053596497,0.011734009,0.007171631,0.015609741,-0.015625,-0.017562866,0.0016403198,0.046173096,0.006942749,-0.03753662,0.0032787323,0.006122589,0.016143799,-0.027252197,-0.016540527,-0.008331299,-0.027145386,0.014122009,0.029373169,-0.0046806335,0.0034713745,-0.022598267,-0.007255554,0.014328003,0.0128479,0.012489319,0.0011196136,0.004009247,0.013641357,-0.023986816,0.0026836395,-0.006942749,0.0021266937,0.021911621,0.012252808,-0.011413574,-0.020736694,0.022140503,-0.0050735474,0.0061912537,0.0032787323,-0.009162903,0.024963379,-0.013496399,-0.015335083,0.0015354156,0.018737793,-0.008628845,-0.01802063,-0.027404785,0.026184082,0.052703857,-0.009857178,-0.008453369,0.014480591,0.015838623,0.023269653,0.03933716,0.012641907,0.039794922,0.024291992,-0.031677246,-0.020980835,0.009262085,-0.0069847107,-0.033477783,0.014450073,0.0018615723,-0.008796692,0.020568848,0.008346558,-0.0115356445,-0.013458252,-0.028030396,-0.013374329,-0.025131226,0.02734375,-0.012077332,0.009025574,-0.018218994,-0.012252808,0.012321472,-0.012512207,-0.042633057,-0.027816772,-0.0008955002,-0.015365601,-0.041748047,0.0038375854,-0.024337769,-0.00023508072,0.0037727356,0.00881958,-0.0057296753,0.05130005,-0.0065956116,-0.004989624,0.019714355,0.025100708,0.013771057,0.018417358,0.032073975,-0.024642944,-0.035369873,-0.020767212,-0.0054092407,-0.014274597,0.015045166,-0.007820129,0.040161133,0.010124207,-0.009155273,-0.0025615692,-0.017028809,-0.010032654,-0.0038204193,-0.037353516,-0.009887695,0.016189575,0.022567749,-0.0007686615,-0.0059013367,0.040771484,-0.025054932,-0.010101318,0.016540527,0.030838013,0.008987427,0.0289917,-0.016067505,-0.008628845,-0.019744873,0.0027713776,-0.011177063,-0.00067806244,0.014122009,0.006614685,-0.005756378,-0.0026187897,0.016830444,-0.0036125183,-0.0059814453,0.016281128,-0.010734558,-0.009483337,0.02720642,0.011512756,0.0007095337,-0.016067505,-0.02406311,0.015716553,0.033081055,0.016098022,0.004009247,-0.014839172,0.016860962,-0.008796692,0.007095337,0.021194458,-0.027816772,-0.021575928,-0.02029419,-0.03878784,0.027694702,0.008865356,0.020065308,-0.0021629333,0.010009766,-0.020385742,-0.02558899,-0.016403198,0.020019531,0.0005016327,-0.011230469,-0.0045928955,-0.004611969,0.01600647,-0.0234375,-0.0048561096,-0.043548584,-0.034820557,-0.018737793,-0.027389526,0.012130737,0.008956909,-0.01637268,0.005252838,-0.0064315796,-0.008491516,0.005050659,0.0284729,-0.01210022,-0.0075302124,0.010543823,0.0082092285,-0.021972656,0.01737976,-0.017456055,-0.014877319,0.026229858,-0.0038547516,0.010131836,-0.01878357,0.019897461,0.018463135,-0.008140564,0.037139893,0.011634827,0.0107421875,-0.0103302,0.00630188,0.0017566681,-0.007358551,0.02659607,-0.019012451,-0.018661499,0.006340027,-0.019561768,-0.04067993,0.011741638,0.0340271,0.034332275,-0.005317688,0.040374756,-0.0040397644,-0.020477295,0.012504578,0.017547607,-0.020904541,0.002204895,0.041748047,0.010681152,-0.010520935,-0.0003247261,-0.013687134,-0.024856567,-0.0073242188,0.019714355,-0.009208679,-0.01197052,0.029754639,0.010650635,0.047943115,0.0059432983,0.018310547,0.025039673,0.0024528503,0.03302002,0.0051345825,0.048950195,-0.0009264946,-0.040924072,0.005344391,0.008277893,-0.009552002,-0.012298584,-0.00014090538,0.008613586,-0.032409668,0.020614624,0.0028018951,0.040161133,-0.024490356,0.0077781677,-0.025405884,-0.004283905,-0.028305054,-0.0066986084,-0.024841309,0.013374329,0.036254883,0.021621704,0.012962341,0.011917114,-0.027008057,0.03302002,0.048858643,-0.0037727356,-0.039916992,-0.003156662,0.009941101,-0.0011615753,-0.0035152435,0.016448975,-0.014152527,-0.019210815,-0.010025024,-0.030914307,0.0055351257,0.002565384,0.019485474,0.011238098,-0.010238647,-0.0079193115,0.033203125,0.0038166046,0.0063438416,0.006668091,0.004749298,0.026275635,0.03189087,-0.0146484375,0.027374268,0.031463623,-0.03805542,0.051086426,-0.01335144,0.020477295,-0.017166138,0.005973816,-0.02494812,-0.015434265,-0.014465332,0.0065307617],"createdAt":"2026-04-18T19:59:48.047Z","updatedAt":"2026-04-22T02:31:45.051Z","lastSeenAt":"2026-04-22T02:31:45.051Z","tsv":"'/api':172 '/api/v1/benefits/77':112,205 '/docs':170 '/pricing':171 '/readme':174 '0.02':10,24,90,143 '000':130 '0x8335':135 '20':129 '2913':136 '300':154 '6':139 'Base network API' 'USDC API' 'accept':159 'access':6,20,36,118,214 'agent':224 'ai':60 'analysi':64 'analyt':59 'api':5,19,35,56,100,117,213 'application/json':164 'avail':199 'awar':227 'base':8,22,43,97,131,138 'base-network' 'behind':37,203 'broad':49 'call':55 'catalog':50 'challeng':124 'classif':66 'commit':107 'connect':180 'content':186 'convers':83 'data':58,219 'decim':140 'describ':217 'document':165,195,230 'embed':67 'endpoint':30,86,111,158 'equal':142 'estim':77 'exact':150,201 'exampl':198 'exchang':72 'experiment':235 'extrem':167 'feed':71 'financ':68 'function':202 'gas':76 'gate':3,17 'generat':84 'generic':210 'geocod':81 'host':47 'infrastructur':79 'input/output':231 'integr':233 'json-response' 'key':101 'learn':62 'limit':104 'list':114 'lowpaymentfee' 'lowpaymentfee.com':32 'machin':61 'made':146 'maxamountrequir':127 'micropayment API' 'name':211 'network':44 'no-api-key' 'openapi':190 'page':175 'paid API access' 'path':206 'pay':9,23,53 'pay-per-cal':52 'pay-per-call API' 'pay-per-request' 'payment':144 'paywal':40 'per':11,25,54,91 'post':160 'post-method' 'premium':4,18,34,116,212 'premium API' 'price':70,88 'prompt':182 'provid':33 'quot':75 'rate':73,103 'render':177 'request':12,26,92,161 'request/response':193 'requir':108,234 'return':120,163,223 'schema':194,232 'scheme':151 'second':155 'sentiment':63 'servic':221 'settl':93 'site':46 'span':57 'spars':168 'spec':191 'specif':110 'summar':65 'timeout':156 'token':74 'unclear':208 'unit':132 'usdc':14,28,95,134 'usdc-settlement' 'util':80 'valid':82,122 'via':147 'wallet':181 'web3':69 'without':229 'x402':2,16,39,123,149 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"cd6879ea-ca5a-4641-9b3a-5d29b02892e2","listingId":"f6f58e71-54bb-42cf-9ba3-00c00f5b44c7","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/77","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:48.047Z"}],"sources":[{"listingId":"f6f58e71-54bb-42cf-9ba3-00c00f5b44c7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/77","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:48.047Z","lastSeenAt":"2026-04-22T02:31:45.051Z"}],"details":{"listingId":"f6f58e71-54bb-42cf-9ba3-00c00f5b44c7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/77 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","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, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network with 300-second timeout","source_url":"https://lowpaymentfee.com/api/v1/benefits/77"},{"claim":"Site offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing gated API services with per-request USDC micropayments on Base","Integrating pay-as-you-go API calls into agent workflows without API key management","Exploring x402 protocol-based payment flows for automated service consumption"],"bestFor":["Developers experimenting with x402 payment protocol integrations","Agents that need keyless, pay-per-call API access on Base","Low-volume consumers who want no-commitment API usage"],"notFor":["Users who need detailed API documentation or well-defined schemas before integrating","High-volume production workloads requiring SLAs or guaranteed uptime","Users without USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.889Z"},"updatedAt":"2026-04-22T02:31:45.051Z"}}