{"id":"d9fe30d1-cef0-4243-a74c-c4ac6fcca256","shortId":"BdY3WA","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\" via the x402 payment protocol on the Base network. It is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, payable in USDC (USD Coin) on Base with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/benefits/22` is labeled \"Premium API Access\" but the provider does not document what data or functionality it returns. The x402 challenge confirms the endpoint is live, accepts POST requests, charges a maximum of 20,000 base units of USDC (i.e., $0.02 given 6 decimals), and responds with `application/json`. Payment is settled on-chain to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base.\n\nDocumentation is extremely sparse. The provider's docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no description of what the `/api/v1/benefits/22` endpoint actually returns. Prospective callers should be aware that the exact functionality behind this endpoint is undocumented.","tags":[],"capabilities":["x402-payment","usdc-on-base","per-request-pricing","json-response","no-api-key","post-method"],"categories":["api","misc"],"synonyms":["premium API","x402 API","pay-per-call API","USDC API","Base network API","lowpaymentfee","micropayment API"],"warnings":["No documentation exists for /api/v1/benefits/22 — the endpoint's actual functionality is unknown.","All docs/pricing/README pages return only a 'Connect wallet' prompt with no usable content.","No OpenAPI spec or request/response schema is available.","The endpoint name 'Premium API Access' is generic and does not describe what it returns."],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/22","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/22","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation of what the endpoint actually does, no request/response schema, no examples, and no OpenAPI spec. The listing is effectively a stub.","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":"2026-04-19T16:18:02.536Z","embedding":[-0.020202637,-0.022613525,0.0703125,0.02583313,0.008178711,-0.02029419,-0.027267456,0.052703857,0.07824707,-0.07385254,0.022583008,-0.03930664,-0.025009155,-0.04724121,-0.0317688,0.010597229,-0.016433716,0.016479492,-0.052703857,0.041229248,0.036987305,-0.010437012,-0.009353638,0.053131104,-0.00042772293,-0.030166626,-0.013427734,-0.022842407,-0.015625,-0.036224365,0.02078247,-0.021270752,-0.0024528503,0.013534546,-0.018127441,-0.0104904175,0.011924744,0.046020508,0.03543091,-0.0074806213,0.007572174,-0.062072754,-0.008872986,0.003019333,-0.044433594,-0.011184692,0.012039185,-0.027618408,-0.015464783,0.020385742,-0.034179688,-0.0046463013,-0.019561768,-0.0038433075,0.011550903,0.008934021,0.00084495544,-0.011016846,0.002658844,0.0025348663,0.0005726814,-0.060150146,-0.014511108,0.015945435,0.004535675,0.052215576,-0.0068626404,0.047668457,0.004512787,0.05102539,0.048339844,0.057769775,0.03643799,0.028442383,-0.0072021484,-0.00020742416,0.0044555664,0.057769775,-0.008422852,-0.0021686554,-0.023239136,-0.002023697,-0.053375244,0.00048828125,-0.019256592,-0.04876709,-0.02142334,0.005317688,-0.031066895,0.035339355,-0.068847656,-0.020889282,-0.022766113,0.019012451,0.012054443,-0.0017261505,-0.02619934,0.015281677,-0.018798828,0.01751709,0.010368347,-0.043029785,0.012458801,0.019866943,0.062072754,0.029464722,0.02748108,0.028701782,0.006465912,-0.020584106,-0.016433716,0.016464233,0.0006146431,-0.001405716,0.010879517,0.011604309,-0.021469116,0.01374054,-0.008987427,0.022262573,-0.049987793,0.058410645,0.026809692,-0.019119263,0.014709473,-0.04751587,-0.0010499954,-0.0010194778,-0.033599854,-0.020980835,0.01499939,0.020065308,0.03781128,-0.014350891,-0.035858154,-0.004940033,-0.025024414,-0.0211792,-0.046417236,-0.02128601,0.025909424,-0.036956787,0.03881836,0.029922485,-0.09875488,-0.014480591,-0.047027588,0.018096924,-0.029342651,-0.0029296875,-0.010307312,0.016464233,-0.024993896,-0.0121536255,-0.025222778,-0.011741638,-0.0058250427,0.029022217,-0.012382507,0.03857422,0.0030460358,0.02848816,0.009613037,0.00920105,0.031341553,0.04196167,0.0019197464,-0.0814209,-0.086120605,-0.04034424,0.004863739,-0.01411438,-0.04650879,-0.00289917,0.0013561249,-0.079833984,-0.036254883,-0.01626587,0.0027561188,-0.04156494,0.012046814,-0.022827148,0.01461792,-0.018692017,-0.06719971,-0.027069092,-0.039154053,0.072509766,0.0154418945,0.004173279,0.036712646,-0.019454956,0.05319214,0.010276794,-0.024215698,-0.03475952,0.014045715,-0.01776123,0.030532837,-0.0013818741,0.0053634644,-0.0473938,0.04244995,0.0574646,0.020889282,-0.017150879,0.00932312,-0.039520264,-0.031585693,-0.03363037,0.0042037964,0.014030457,-0.009101868,0.02519226,-0.015037537,-0.043640137,-0.011207581,0.0078125,0.021026611,0.059692383,0.007068634,0.0006322861,-0.005016327,0.020492554,-0.03189087,0.046569824,0.028778076,0.026153564,-0.033843994,-0.015640259,0.007987976,0.032989502,-0.021591187,0.0068626404,-0.020050049,0.019561768,0.00015115738,0.015640259,0.03753662,-0.017318726,-0.016738892,-0.038360596,-0.013557434,0.038757324,0.020980835,-0.033569336,-0.05355835,-0.059265137,0.036987305,0.05569458,0.025787354,0.010910034,-0.002691269,-0.028411865,-0.011886597,-0.07775879,0.056549072,0.08001709,-0.017211914,-0.014122009,0.019500732,-0.025665283,-0.027053833,-0.020889282,-0.018798828,-0.023757935,-0.01864624,-0.0024642944,-0.039245605,0.0032596588,0.019927979,0.027923584,0.053009033,-0.011817932,-0.04550171,-0.021911621,0.007068634,0.009239197,-0.03286743,-0.0038967133,0.0059051514,0.02748108,0.024291992,-0.008605957,0.029067993,-0.009796143,0.017593384,0.001490593,-0.016082764,-0.029052734,-0.023117065,0.018844604,0.0068092346,-0.06665039,0.023025513,0.0024700165,0.0625,-0.04727173,0.049224854,-0.0000059604645,0.0069885254,0.06750488,-0.015914917,-0.04586792,0.0058250427,0.019088745,0.04437256,0.04626465,-0.0028705597,-0.011787415,-0.011489868,0.057128906,-0.012756348,0.006362915,0.003112793,0.027404785,0.031341553,0.006378174,-0.07293701,-0.02507019,-0.012359619,-0.024230957,0.019714355,-0.041931152,0.026397705,-0.014976501,0.0031833649,-0.029632568,0.0071372986,-0.042236328,0.021102905,-0.01676941,-0.017486572,-0.017562866,-0.0154800415,0.0124053955,0.02659607,-0.014892578,-0.011924744,0.03768921,0.022262573,-0.006626129,-0.040618896,-0.016494751,-0.024032593,0.012664795,0.030883789,0.04598999,0.0049438477,0.0335083,-0.03677368,0.014976501,0.034698486,0.0023288727,0.042388916,-0.0061683655,0.019744873,-0.058502197,-0.05645752,-0.024765015,-0.04800415,0.031341553,0.0075950623,0.013542175,0.039916992,0.0043792725,-0.014816284,-0.028564453,0.042144775,-0.041137695,0.000688076,0.04031372,-0.011871338,-0.02949524,-0.001004219,0.00025629997,0.012664795,0.02406311,0.015159607,0.00013506413,0.06628418,0.04257202,-0.002521515,0.013938904,0.028671265,0.010543823,-0.004875183,-0.023040771,-0.0234375,-0.013916016,0.016174316,-0.0119018555,-0.016998291,-0.079956055,0.033355713,0.034820557,0.0647583,0.0151901245,0.008338928,0.030776978,-0.016021729,0.0024204254,-0.025894165,-0.03366089,-0.020477295,-0.05429077,0.018707275,-0.021987915,-0.004878998,-0.012481689,0.03451538,0.006175995,0.016098022,-0.03970337,0.07324219,0.005428314,-0.02659607,0.022537231,0.004184723,0.04574585,0.043304443,-0.042938232,0.021881104,0.0034751892,-0.037078857,-0.012466431,0.02494812,-0.0027275085,-0.017303467,-0.0647583,-0.035125732,0.0065994263,-0.00026082993,-0.052001953,-0.011550903,0.0042495728,0.01524353,0.018081665,-0.02104187,-0.024841309,0.013076782,-0.026107788,-0.060791016,-0.021697998,-0.044952393,0.019943237,0.05142212,-0.02935791,0.007129669,0.000046133995,-0.0018024445,0.0023880005,0.008651733,-0.006969452,-0.009513855,-0.03717041,0.0124435425,0.013542175,0.012588501,0.019256592,0.016921997,0.02670288,0.0069618225,0.049591064,0.012992859,-0.022018433,-0.0524292,0.01171875,-0.047576904,-0.010025024,-0.006767273,-0.001906395,-0.0011081696,-0.013183594,-0.009162903,-0.023742676,0.009544373,-0.016311646,0.008544922,0.036865234,-0.036834717,-0.02027893,-0.051879883,-0.015655518,0.005760193,0.085998535,0.048431396,-0.0017709732,-0.064941406,-0.018539429,0.027557373,-0.008621216,0.008979797,-0.0154418945,-0.0076675415,-0.009925842,-0.036102295,-0.017669678,-0.023544312,0.019348145,0.00061273575,-0.0042686462,0.028060913,-0.00096178055,0.01763916,0.0043640137,0.008811951,0.042999268,-0.03125,0.004463196,-0.03591919,0.017822266,0.008857727,-0.00070667267,-0.048095703,0.04510498,0.0132369995,0.02935791,-0.038238525,0.0056419373,0.0069770813,0.017196655,0.026870728,-0.014694214,-0.01322937,0.0039367676,-0.044189453,-0.062683105,0.036499023,-0.015670776,0.018569946,-0.0027637482,0.009712219,0.04046631,-0.0009407997,-0.000685215,0.028945923,-0.026870728,-0.012161255,-0.028747559,-0.03338623,-0.0095825195,0.01033783,-0.010566711,0.013252258,-0.0099105835,0.011421204,-0.005962372,-0.023956299,0.029663086,-0.0016174316,0.00573349,0.03918457,0.006198883,0.021148682,0.04598999,0.0028972626,-0.02017212,0.027740479,-0.017105103,0.0039253235,-0.01826477,0.0446167,0.031204224,-0.0078125,-0.013015747,-0.0020103455,-0.010292053,-0.023025513,-0.010696411,-0.0029029846,0.036376953,0.011764526,-0.024475098,0.02809143,0.024383545,-0.022598267,-0.007499695,0.014709473,0.01638794,-0.03338623,0.02128601,0.019439697,0.06402588,-0.014892578,-0.004558563,0.015533447,0.02619934,0.018508911,0.018997192,-0.018737793,0.0043182373,-0.0154418945,0.014724731,0.0015583038,-0.008270264,0.008811951,-0.004146576,0.011833191,0.03302002,0.020477295,-0.02507019,-0.017623901,-0.0013713837,-0.0033416748,-0.014709473,0.014884949,0.024475098,0.010032654,-0.014839172,0.025741577,0.022415161,-0.033294678,-0.013046265,-0.020645142,0.045562744,-0.021499634,-0.0032482147,0.015037537,0.006641388,0.029769897,-0.052215576,0.0028514862,0.014785767,0.021194458,-0.016830444,-0.042297363,-0.035217285,0.008331299,0.017715454,0.0000019669533,0.008598328,0.02532959,-0.0046577454,0.008255005,0.023605347,0.0008363724,-0.014099121,-0.019424438,-0.04849243,-0.0057678223,0.00774765,-0.0064811707,-0.024490356,-0.0004377365,-0.031097412,-0.024047852,0.0051116943,-0.011482239,-0.008331299,-0.012245178,0.011924744,0.030776978,-0.0058403015,0.00762558,-0.020233154,-0.01550293,0.019714355,0.015029907,0.021499634,-0.037322998,0.009994507,-0.021591187,0.0003643036,-0.0054969788,0.017974854,0.014404297,0.018997192,0.001865387,0.011260986,-0.03729248,0.029129028,-0.03970337,0.006088257,0.011810303,-0.036193848,-0.002948761,-0.024597168,-0.025558472,0.03704834,-0.009788513,0.001745224,-0.02722168,-0.031799316,-0.012649536,-0.030929565,0.015388489,0.03656006,0.03378296,-0.030029297,0.003862381,0.009162903,0.0076789856,-0.0005660057,0.0070152283,-0.007911682,0.02748108,0.024108887,0.00031924248,-0.032043457,-0.016815186,-0.0048103333,-0.0016183853,-0.044006348,-0.04510498,-0.02949524,0.0037574768,-0.009185791,-0.0058555603,-0.041748047,-0.018936157,0.01399231,-0.04196167,0.01651001,0.01687622,0.025299072,0.015930176,-0.01864624,0.009277344,0.020767212,-0.020370483,0.03253174,-0.00006979704,0.00018084049,-0.03567505,0.003627777,0.04522705,0.030059814,0.00026130676,-0.0039749146,0.0032749176,-0.034423828,-0.06149292,-0.011436462,-0.010902405,0.0056114197,0.008934021,-0.007904053,-0.049957275,-0.014122009,-0.028167725,0.0052490234,0.019165039,0.021087646,0.015396118,-0.005168915,-0.00071144104,-0.009742737,-0.01222229,-0.036315918,0.016830444,0.011047363,-0.011070251,0.018463135,0.051513672,0.019500732,-0.005458832,-0.0077934265,0.0038833618,0.024337769,-0.028335571,-0.0011196136,-0.010574341,0.007865906,-0.010398865,-0.014389038,-0.03753662,0.0019283295,0.0848999,-0.004047394,0.010139465,-0.011436462,-0.018630981,0.018844604,0.04031372,-0.055664062,-0.0118637085,-0.038513184,0.020126343,-0.023742676,0.02583313,0.013702393,0.022613525,-0.022827148,-0.06021118,-0.0026168823,0.01600647,-0.0026283264,-0.04937744,-0.017959595,-0.053009033,-0.016036987,-0.01789856,-0.007888794,0.000521183,0.010818481,-0.007835388,-0.0871582,-0.00045228004,0.053466797,0.010696411,0.008651733,-0.029388428,0.024459839,0.02180481,-0.022842407,-0.019607544,0.025497437,-0.03451538,-0.011413574,-0.031982422,0.03250122,-0.010444641,-0.019073486,0.030075073,0.011329651,0.022918701,-0.02229309,0.009849548,-0.011940002,0.0014028549,-0.0051841736,0.021530151,-0.006904602,-0.0043525696,0.01890564,-0.04385376,0.01474762,0.022644043,0.0020008087,-0.0020637512,0.022903442,0.02822876,-0.040130615,-0.009117126,0.03729248,0.01171875,0.03277588,-0.030181885,0.03778076,0.009422302,-0.0043792725,0.01625061,-0.012382507,-0.034606934,-0.050628662,-0.046722412,0.020050049,0.01638794,0.015602112,0.0011491776,-0.00059986115,0.011833191,-0.006702423,0.00945282,-0.011177063,-0.028564453,-0.0075950623,0.015266418,0.011604309,0.0035552979,0.0033111572,0.02784729,0.025482178,0.049804688,-0.000060021877,-0.012084961,0.0154418945,0.008285522,-0.014190674,0.009674072,0.014923096,0.0057029724,0.022125244,0.00907135,0.009429932,-0.040222168,-0.016082764,-0.02029419,-0.006626129,0.019699097,0.006626129,-0.004940033,-0.0048332214,0.0007624626,0.010383606,-0.030715942,0.021194458,-0.03277588,-0.028457642,-0.006187439,-0.013870239,-0.0016174316,0.0065078735,0.00074338913,0.009750366,0.004196167,0.061645508,0.004940033,-0.004211426,0.024169922,0.02923584,0.0060691833,-0.030670166,-0.0060424805,-0.007156372,-0.016281128,0.0027637482,-0.026611328,0.014137268,0.038513184,-0.013557434,0.015106201,-0.011207581,0.027664185,-0.005580902,0.017288208,0.0011081696,0.015792847,-0.014457703,0.032104492,-0.043640137,-0.0018453598,0.035064697,0.009269714,-0.0037593842,-0.007282257,-0.036193848,0.024047852,0.0008215904,-0.027832031,0.04272461,-0.016571045,0.021377563,-0.029922485,-0.005252838,0.0026760101,-0.021820068,-0.030715942,0.036132812,-0.0026855469,-0.0051116943,0.032562256,-0.031555176,0.031555176,-0.044799805,0.014228821,0.0013389587,0.00086450577,-0.013725281,-0.012229919,-0.018173218,-0.008987427,-0.018859863,-0.007247925,0.0028934479,0.053497314,0.022506714,0.022354126,0.0368042,0.009963989,0.01158905,-0.04248047,-0.02809143,0.0020999908,-0.03186035,0.013595581,-0.024780273,0.052856445,0.044158936,-0.00037145615,0.033325195,0.033477783,0.022415161,0.0044822693,0.02053833,-0.0082473755,0.014007568,-0.024169922,0.029891968,0.0069236755,0.04425049,-0.02784729,0.017303467,0.0054779053,0.023620605,-0.024261475,0.031036377,0.07897949,0.024780273,-0.011917114,0.042755127,-0.004699707,-0.006931305,-0.01222229,-0.021148682,0.049560547,0.0016479492,0.05505371,0.03869629,0.0064201355,-0.008148193,0.027511597,-0.02293396,-0.03213501,0.05847168,0.023483276,-0.02583313,-0.0021419525,-0.011909485,0.0061416626,-0.058410645,-0.030578613,0.015556335,0.0029010773,0.009277344,-0.0054016113,-0.00548172,-0.019760132,0.03543091,0.019165039,0.01525116,-0.018539429,0.034210205,0.03265381,0.0028820038,0.02178955,0.0032100677,0.029678345,-0.020812988,-0.01737976,0.009140015,0.020584106,-0.00472641,-0.0016946793,0.0138168335,0.007873535,0.05117798,0.028244019,-0.017532349,-0.014099121,0.03338623,0.011619568,0.006465912,0.039001465,0.03274536,0.0029659271,0.036254883,0.045440674,0.018157959,-0.0335083,0.015556335,-0.006034851,0.0109939575,-0.0046157837,-0.014205933,0.002357483,-0.010917664,0.023101807,0.008544922,-0.01007843,0.022903442,0.03048706,0.009735107,-0.000015735626,-0.010032654,0.013137817,-0.007434845,0.00598526,0.01713562,-0.015655518,0.026504517,0.009300232,0.028778076,-0.017440796,0.029922485,-0.0065612793,-0.013572693,-0.0036449432,0.02571106,-0.03353882,-0.009277344,-0.004623413,-0.0041007996,-0.036224365,0.016357422,0.030792236,-0.018814087,0.027511597,0.014511108,0.0068092346,0.009773254,0.025650024,0.020706177,-0.008163452,-0.004043579,-0.015289307,0.023590088,0.04888916,0.0031738281,0.011260986,-0.010635376,0.011642456,0.017196655,-0.01197052,-0.010864258,-0.0099105835,-0.023071289,-0.049346924,0.006549835,0.036712646,0.01953125,0.03100586,0.004173279,-0.02128601,0.0031833649,0.02128601,0.015571594,0.0075950623,-0.019042969,0.024765015,-0.018081665,0.044433594,0.031097412,-0.007545471,0.01411438,-0.020721436,-0.026290894,0.012367249,-0.019683838,0.02470398,-0.0032482147,-0.00004386902,-0.017486572,0.028884888,-0.014137268,-0.03366089,0.012527466,-0.019134521,-0.0087509155,-0.03363037,0.0066223145,0.0065727234,0.017105103,0.04626465,0.015342712,-0.028015137,0.07055664,-0.016235352,0.045562744,-0.02166748,-0.0001989603,0.055389404,0.047302246,0.043395996,0.025634766,0.016601562,-0.024627686,0.0018920898,0.04043579,0.02293396,0.012054443,-0.001666069,-0.019622803,0.03729248,0.0053215027,0.024871826,-0.01486969,0.0018005371,0.0068626404,-0.004787445,-0.009979248,0.0024662018,-0.0032234192,0.009735107,0.0501709,-0.039093018,-0.012001038,-0.017623901,-0.010177612,0.03652954,-0.0010004044,0.0056533813,-0.0023727417,-0.029846191,0.016204834,-0.02935791,-0.0061912537,0.00078344345,0.029418945,-0.046783447,-0.0113220215,-0.0061454773,0.018875122,-0.025680542,0.027740479,0.0072135925,-0.004020691,0.016235352,0.040802002,-0.005302429,0.043426514,-0.01084137,0.029251099,0.028244019,0.004055023,-0.024505615,0.01574707,0.00831604,-0.02835083,0.0064888,0.033996582,0.004135132,0.011367798,0.001083374,-0.00856781,0.011817932,0.017822266,-0.0032634735,-0.0023345947,-0.016693115,-0.005428314,0.009399414,0.005092621,0.005935669,0.013069153,-0.01184082,-0.013954163,0.012268066,0.043395996,0.0135269165,-0.04107666,0.0070343018,0.008987427,0.016357422,-0.02482605,-0.017318726,-0.010223389,-0.023849487,0.01927185,0.02935791,-0.004348755,0.002998352,-0.020751953,-0.006679535,0.032440186,0.023513794,0.013961792,0.005558014,0.0021038055,0.01512146,-0.02029419,0.005794525,-0.005886078,-0.0027103424,0.018875122,0.016708374,-0.0073127747,-0.02772522,0.0155181885,-0.0022029877,0.008399963,0.0038928986,-0.009063721,0.024765015,-0.008850098,-0.014335632,0.009010315,0.014656067,-0.009460449,-0.015464783,-0.02935791,0.014137268,0.042388916,-0.012512207,-0.01058197,0.013710022,0.022338867,0.01991272,0.04269409,0.0124053955,0.037719727,0.028121948,-0.024917603,-0.021499634,0.0066223145,-0.00894928,-0.04144287,0.016830444,-0.00982666,-0.0068092346,0.0287323,0.018508911,-0.006828308,-0.022857666,-0.023986816,-0.009292603,-0.02217102,0.027877808,-0.012680054,0.014587402,-0.015792847,-0.010009766,0.012863159,-0.0069084167,-0.037841797,-0.026321411,-0.0052375793,-0.011306763,-0.047088623,0.006023407,-0.026153564,0.012084961,0.0023059845,0.008392334,-0.009719849,0.039733887,-0.010391235,-0.008224487,0.01977539,0.027160645,0.0012674332,0.01146698,0.026367188,-0.019378662,-0.03237915,-0.020553589,-0.008758545,-0.009475708,0.015556335,-0.011505127,0.043792725,0.0044136047,-0.008346558,-0.0053710938,-0.011650085,-0.011413574,0.0009889603,-0.02684021,-0.012535095,0.010665894,0.019989014,-0.0024909973,-0.006385803,0.041900635,-0.022521973,-0.018875122,0.019958496,0.03488159,0.01576233,0.032348633,-0.0011129379,-0.01852417,-0.022949219,0.006855011,-0.012664795,0.006515503,0.015319824,0.0039024353,-0.012771606,-0.005809784,0.019882202,0.00010585785,-0.005973816,0.01826477,-0.009353638,-0.00579834,0.030349731,0.014335632,0.0028209686,-0.018371582,-0.016448975,0.022750854,0.038513184,0.020431519,-0.004886627,-0.007381439,0.017410278,-0.014976501,0.0039253235,0.023956299,-0.019012451,-0.024749756,-0.022216797,-0.043182373,0.019210815,0.007835388,0.015945435,-0.0010766983,0.010894775,-0.024505615,-0.021957397,-0.017822266,0.028945923,0.005756378,-0.019760132,-0.0020198822,-0.009994507,0.011894226,-0.028640747,0.005844116,-0.04559326,-0.026794434,-0.01663208,-0.021743774,0.018218994,0.009803772,-0.017089844,0.0009794235,-0.005836487,-0.008918762,0.004737854,0.03378296,-0.010169983,-0.013710022,0.011039734,0.016571045,-0.017715454,0.013183594,-0.014724731,-0.015655518,0.02494812,-0.007209778,0.006790161,-0.016464233,0.029663086,0.016082764,-0.0066108704,0.026824951,0.0060806274,0.017196655,-0.015289307,0.008308411,0.0093688965,-0.007904053,0.019241333,-0.020874023,-0.026031494,0.0052261353,-0.016799927,-0.040618896,0.018951416,0.031677246,0.036102295,-0.0071105957,0.033233643,-0.015655518,-0.015823364,0.0075683594,0.00356102,-0.02281189,0.000009715557,0.042999268,0.004508972,-0.013656616,-0.000998497,-0.014961243,-0.03277588,-0.010734558,0.007965088,-0.012580872,-0.008331299,0.023925781,0.011489868,0.041137695,0.0050315857,0.014709473,0.026809692,0.014984131,0.03152466,0.0027008057,0.05050659,0.003189087,-0.026229858,0.007160187,0.005935669,-0.0061836243,-0.012794495,-0.0041656494,0.0067100525,-0.033691406,0.016601562,-0.00075531006,0.041412354,-0.024246216,0.012496948,-0.025024414,-0.0082473755,-0.028671265,-0.0046577454,-0.02079773,0.012023926,0.035247803,0.018432617,0.008773804,0.0088272095,-0.03338623,0.029953003,0.047088623,-0.0065231323,-0.036193848,-0.0049324036,0.014831543,-0.002084732,-0.002714157,0.011260986,-0.014839172,-0.01574707,-0.0024261475,-0.025527954,-0.004032135,-0.005054474,0.015571594,-0.0036411285,-0.003479004,-0.009117126,0.027313232,0.005935669,0.0020008087,0.012001038,0.0069503784,0.027801514,0.029815674,-0.01171875,0.026550293,0.033569336,-0.04031372,0.05734253,-0.015586853,0.02368164,-0.021209717,0.0038871765,-0.033081055,-0.009963989,-0.009605408,0.006095886],"createdAt":"2026-04-18T19:59:37.708Z","updatedAt":"2026-04-22T04:02:19.562Z","lastSeenAt":"2026-04-22T04:02:19.562Z","tsv":"'/api/v1/benefits/22':99,201 '0.02':10,24,75,139 '000':133 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':155 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':160 '20':132 '6':141 'Base network API' 'USDC API' 'accept':125 'access':6,20,36,104 'actual':203 'address':154 'ai':62 'analyt':61 'api':5,19,35,87,103,171 'application/json':146 'awar':209 'base':8,22,44,84,134,162 'behind':214 'caller':206 'categori':58 'chain':152 'challeng':119 'charg':128 'coin':82 'commit':94 'confirm':120 'connect':180 'content':186 'contract':159 'data':60,112 'decim':142 'descript':197 'doc':170 'document':110,163 'endpoint':30,51,71,98,122,202,216 'exact':212 'extrem':165 'financ':65 'function':114,213 'gate':3,17 'given':140 'i.e':138 'includ':59 'infrastructur':68 'json-response' 'key':88 'label':101 'learn':64 'limit':91 'live':124 'lowpaymentfee' 'lowpaymentfee.com':32 'machin':63 'mani':50 'maximum':130 'micropayment API' 'network':45 'no-api-key' 'offer':52 'on-chain':150 'one':48 'openapi':190 'page':175 'pay':9,23 'pay-per-call API' 'payabl':78 'payment':40,147 'per':11,25,76 'per-request-pricing' 'post':126 'post-method' 'premium':4,18,34,102 'premium API' 'price':73,172 'prompt':182 'prospect':205 'protocol':41 'provid':33,55,107,168 'rate':90 'readm':174 'render':177 'request':12,26,77,127 'request/response':193 'requir':95 'respond':144 'return':116,204 'schema':194 'settl':149 'span':57 'spars':166 'spec':191 'specif':97 'undocu':218 'unit':135 'usd':81 'usdc':14,28,80,137,158 'usdc-on-base' 'use':156 'util':69 'via':37 'wallet':181 'web3':66 'x402':2,16,39,118 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"2b2c25bf-81dc-45f2-a029-5a0b0d4b2753","listingId":"d9fe30d1-cef0-4243-a74c-c4ac6fcca256","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/22","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:37.708Z"}],"sources":[{"listingId":"d9fe30d1-cef0-4243-a74c-c4ac6fcca256","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/22","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:37.708Z","lastSeenAt":"2026-04-22T04:02:19.562Z"}],"details":{"listingId":"d9fe30d1-cef0-4243-a74c-c4ac6fcca256","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/22 \\\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":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/benefits/22"},{"claim":"All endpoints are 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":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/benefits/22"}],"useCases":["Accessing a premium data or service endpoint with per-request USDC micropayments","Integrating x402-compatible agents that pay per call without API key management","Testing x402 payment flows on Base network"],"bestFor":["Developers experimenting with x402 payment protocol on Base","Agents that need keyless, pay-per-use API access","Low-volume consumers who want no subscription commitments"],"notFor":["Users who need documented, well-specified API contracts before integrating","High-volume production workloads requiring SLAs and support","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:26.271Z"},"updatedAt":"2026-04-22T04:02:19.562Z"}}