{"id":"19a2949a-2f90-4704-975d-455fd95a8cfc","shortId":"562YGb","kind":"x402","title":"Pay-per-call notification endpoint on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call notification endpoint on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at `/api/v1/notifications/34` is part of the lowpaymentfee.com platform, which offers a broad suite of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints are gated via the x402 payment protocol, settling in USDC on the Base network. The specific endpoint probed here is listed under \"Premium API Access\" and accepts POST requests.\n\nPricing is $0.02 per request (the x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC, which is 20000 / 10^6 = $0.02). No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each request. The platform advertises instant access and a uniform $0.02 price across all its endpoints.\n\nThe exact functionality of the `/api/v1/notifications/34` endpoint is not documented beyond the label \"Premium API Access.\" The crawled site does not list this specific path among its advertised API categories (data, AI, finance, infrastructure), so it may be an unlisted or internal notification resource. The endpoint is confirmed live (returns a proper 402 x402 challenge). No OpenAPI schema, request/response examples, or detailed documentation were found for this particular route.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","notification-api","no-api-key"],"categories":["notifications","infrastructure"],"synonyms":["notification endpoint","premium API","pay-per-call API","x402 notification","lowpaymentfee","USDC API","Base network API","micropayment API"],"warnings":["No documentation found for the /api/v1/notifications/34 endpoint specifically — its purpose is unclear","This path is not listed among the advertised API categories on the landing page","No OpenAPI spec, request body schema, or response schema available","No robots.txt or agents.txt found"],"endpointUrl":"https://lowpaymentfee.com/api/v1/notifications/34","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/notifications/34","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, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific functionality of /api/v1/notifications/34 is undescribed. The listing is effectively a stub with confirmed liveness and pricing.","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":"2026-04-22T00:31:10.474Z","embedding":[-0.03265381,-0.025802612,0.04534912,0.015075684,-0.00041031837,-0.030593872,0.010871887,0.018203735,0.08111572,-0.050598145,0.018447876,-0.04244995,-0.039276123,-0.025238037,-0.0029735565,0.009300232,0.006439209,0.013725281,-0.031219482,0.028427124,0.024490356,-0.01966858,-0.019577026,0.031921387,0.0025348663,-0.026138306,-0.021911621,0.010749817,-0.0046806335,-0.03237915,0.06021118,-0.013626099,-0.011413574,-0.0034675598,-0.006965637,-0.002784729,0.005924225,0.05633545,-0.0007352829,0.004272461,0.001750946,-0.041290283,0.002368927,0.000048220158,-0.0715332,-0.0050582886,-0.004299164,-0.020080566,0.00894165,0.006793976,-0.030456543,-0.004550934,0.0003695488,0.006084442,0.007762909,-0.001288414,0.007583618,-0.009475708,0.02709961,0.018508911,0.00055217743,-0.07879639,-0.026947021,-0.027404785,0.02482605,0.041259766,-0.01663208,0.040740967,0.025131226,0.048583984,0.023376465,0.055480957,0.02809143,-0.006034851,-0.009597778,0.004714966,-0.0065193176,0.048736572,-0.02444458,-0.025253296,-0.010192871,-0.010757446,-0.04598999,0.01612854,-0.015548706,-0.045959473,-0.036895752,0.0152282715,-0.0134887695,0.035308838,-0.07696533,-0.0011587143,0.0012245178,0.0019321442,-0.022872925,-0.015434265,-0.009300232,0.0074501038,0.0018100739,0.01322937,0.012863159,-0.04675293,0.013549805,0.007183075,0.039978027,0.05810547,0.03326416,0.029769897,0.010940552,0.008834839,-0.0066719055,0.022064209,-0.01159668,-0.026412964,0.016113281,-0.0006556511,-0.015357971,0.012718201,-0.02659607,0.02558899,-0.040649414,0.032989502,0.0071258545,0.0023975372,0.019821167,-0.030975342,-0.007545471,0.002538681,-0.017944336,-0.013069153,0.03491211,0.02999878,0.027679443,-0.012451172,-0.009757996,0.010253906,-0.015823364,-0.03074646,-0.07366943,-0.03515625,0.049713135,-0.014846802,0.018310547,0.03692627,-0.10534668,0.0076141357,-0.05227661,0.0069465637,-0.0317688,0.0020370483,-0.01889038,0.03390503,-0.026565552,-0.0047912598,-0.004360199,-0.005130768,0.006072998,0.03125,-0.013916016,0.05130005,-0.0043258667,0.014595032,0.03982544,0.01651001,0.021133423,0.016433716,-0.0037002563,-0.08123779,-0.08013916,-0.0037498474,0.003227234,-0.0077934265,-0.027374268,0.010635376,0.006690979,-0.048217773,-0.0135650635,0.0048179626,0.010986328,-0.024536133,0.012634277,-0.04046631,0.021972656,-0.02760315,-0.036102295,-0.00920105,-0.023849487,0.056243896,0.028213501,0.032714844,0.038024902,-0.024368286,0.053649902,0.030639648,-0.04147339,-0.021392822,0.026489258,-0.024108887,0.007183075,-0.026367188,0.005218506,-0.038208008,0.05596924,0.054718018,0.00223732,-0.025939941,-0.012687683,-0.028427124,-0.020019531,-0.013336182,0.024536133,0.010948181,-0.0061416626,0.03253174,-0.032836914,-0.021728516,-0.0054512024,0.025772095,-0.011291504,0.042144775,0.04019165,0.0006542206,0.035369873,0.027328491,-0.039001465,0.02394104,0.02027893,0.015991211,-0.028060913,-0.029571533,0.014328003,0.021224976,-0.010467529,0.019622803,-0.011909485,0.04348755,-0.016555786,0.0058403015,0.025177002,-0.024658203,-0.02444458,-0.046539307,-0.034088135,0.031051636,-0.016586304,-0.014137268,-0.037322998,-0.06677246,0.035339355,0.053344727,0.034606934,-0.0064201355,0.02835083,-0.021865845,-0.015655518,-0.05847168,0.052764893,0.06173706,-0.012413025,-0.032409668,0.038085938,-0.022949219,-0.03982544,-0.0032634735,-0.008201599,-0.036346436,-0.0026454926,0.0039024353,-0.051818848,0.0045280457,-0.0053520203,-0.0059394836,0.05795288,0.00907135,-0.04269409,0.0021896362,-0.031066895,-0.0027694702,-0.017944336,-0.017456055,0.004322052,0.0011396408,0.026153564,-0.01448822,0.008270264,-0.00020217896,-0.00070858,0.0036678314,0.0063476562,-0.0026893616,-0.04486084,0.01121521,0.008911133,-0.06542969,0.0011558533,-0.017288208,0.05899048,-0.057006836,0.031982422,-0.018615723,-0.00021648407,0.06561279,-0.015823364,-0.046936035,0.0017147064,0.016311646,0.0413208,0.040863037,-0.00086688995,-0.03881836,-0.0096588135,0.07159424,-0.0309906,-0.01776123,0.014762878,0.009605408,0.04498291,0.0093688965,-0.045562744,-0.032806396,0.01966858,-0.02331543,0.031982422,-0.027862549,0.02166748,0.00040626526,0.03479004,-0.025772095,0.005168915,-0.023651123,0.022506714,-0.018585205,0.008651733,-0.016967773,0.0016260147,0.028396606,0.004283905,-0.029846191,-0.003145218,0.02835083,0.01939392,-0.0023021698,-0.04522705,-0.050109863,-0.008087158,-0.013725281,-0.0038166046,-0.00040984154,0.009475708,0.037902832,-0.04449463,0.0008673668,0.04373169,0.0075263977,0.03564453,0.0105896,0.018554688,-0.0592041,-0.026412964,-0.012908936,-0.04660034,0.020095825,0.029724121,-0.012863159,0.050872803,0.009269714,-0.039489746,-0.05014038,0.023483276,-0.041809082,0.0055999756,0.048431396,-0.014144897,-0.021514893,-0.02218628,-0.0042419434,0.012672424,0.021881104,0.036315918,0.019836426,0.072753906,0.025054932,-0.0015411377,0.020233154,0.0067825317,0.039642334,-0.0009598732,-0.017745972,-0.026062012,-0.020645142,0.025283813,-0.024597168,-0.016860962,-0.058166504,0.049804688,0.06317139,0.08538818,0.018310547,0.01977539,0.04840088,-0.014694214,0.014595032,-0.01247406,-0.0053634644,-0.027526855,-0.03970337,0.0309906,-0.00680542,0.00258255,-0.034088135,0.031707764,0.007774353,0.020065308,-0.032073975,0.048614502,0.0035934448,-0.013839722,0.027145386,0.01184082,0.04348755,0.07122803,-0.02444458,0.040985107,0.035949707,-0.047790527,-0.0003733635,0.027862549,-0.018798828,0.026535034,-0.07977295,-0.037231445,-0.008399963,-0.027374268,-0.052764893,0.008491516,-0.015975952,0.007987976,0.03677368,0.00032043457,-0.017669678,-0.008911133,-0.028549194,-0.05291748,-0.01423645,-0.019485474,0.008705139,0.029464722,-0.030441284,0.007881165,-0.0012626648,-0.011886597,-0.011062622,0.01789856,0.032470703,-0.0068511963,-0.048034668,0.03793335,0.006011963,0.0032081604,0.033233643,0.026641846,0.02659607,0.026672363,0.027633667,-0.0068244934,-0.01802063,-0.0927124,0.024398804,-0.052825928,-0.015510559,0.032562256,-0.031799316,0.0015935898,-0.00047397614,-0.02279663,-0.03186035,0.0057792664,-0.062683105,-0.0079956055,0.03540039,-0.021148682,-0.018508911,-0.026519775,-0.030944824,-0.020202637,0.048065186,0.042236328,0.016571045,-0.057159424,-0.01374054,0.01789856,0.0029010773,0.020248413,-0.013549805,-0.022003174,-0.012741089,-0.045532227,0.012046814,-0.009773254,0.006641388,-0.023498535,-0.0056266785,0.02935791,0.005645752,0.034423828,0.027023315,0.007347107,0.039794922,-0.028137207,-0.015434265,-0.0035533905,0.051635742,0.0047569275,-0.01979065,-0.04272461,0.033416748,0.00831604,0.035491943,-0.045928955,-0.0030498505,-0.015068054,0.0152282715,0.009315491,-0.023040771,0.0011301041,-0.011642456,-0.042144775,-0.06542969,0.036102295,-0.020385742,0.04425049,0.009399414,0.026260376,0.015205383,-0.012336731,-0.0038909912,0.018676758,-0.04727173,-0.024658203,-0.015899658,-0.02796936,-0.023330688,-0.008308411,-0.023635864,0.005302429,-0.006275177,0.020050049,0.019302368,-0.026412964,0.01210022,0.0026817322,0.004245758,0.03479004,0.008468628,0.021881104,0.02748108,-0.01399231,-0.0423584,0.02166748,0.0075531006,0.00283432,-0.009391785,0.032287598,0.030914307,-0.00014340878,-0.009544373,-0.0072517395,0.0060768127,-0.03967285,-0.006717682,0.008628845,0.0050315857,-0.01876831,-0.039001465,0.0013628006,0.017593384,-0.041381836,-0.032989502,0.023132324,0.028167725,-0.027679443,0.012748718,0.03488159,0.04147339,-0.047973633,0.017669678,-0.0024547577,0.04284668,0.010902405,0.018432617,-0.0013504028,0.018737793,-0.01638794,0.013145447,0.0090789795,-0.014221191,0.00868988,0.0102005005,0.026641846,0.026870728,-0.008407593,-0.013191223,-0.028045654,-0.006000519,0.0025348663,-0.020980835,0.01399231,0.00969696,0.008140564,-0.016662598,0.0046157837,0.0077285767,-0.02027893,-0.012077332,-0.0064849854,0.034820557,-0.0011758804,-0.028656006,0.022705078,0.031707764,0.028656006,-0.035949707,-0.015457153,-0.012107849,0.0048980713,-0.027374268,-0.03189087,-0.032287598,0.00012433529,0.010856628,0.015945435,0.01083374,0.030639648,-0.014678955,0.009529114,0.008583069,-0.0025424957,-0.0093307495,0.010917664,-0.052734375,-0.0015277863,0.007621765,-0.0046310425,-0.023864746,0.0032978058,-0.011062622,-0.024032593,0.00459671,-0.004486084,-0.00042057037,0.0017032623,0.017059326,0.030288696,0.0099105835,0.0053482056,-0.012321472,-0.030822754,0.001074791,0.014762878,0.018554688,-0.054656982,0.019592285,-0.008331299,-0.0036010742,0.0019464493,0.0082473755,0.007041931,0.0075950623,0.0127334595,0.019546509,-0.026489258,0.045196533,-0.016357422,0.02748108,0.006454468,-0.045532227,-0.009941101,-0.037017822,-0.01448822,0.042388916,-0.0140686035,-0.004322052,-0.023132324,-0.059906006,-0.017715454,-0.043792725,0.020874023,0.02671814,0.024917603,-0.021820068,0.016525269,-0.0028705597,0.015930176,-0.016494751,0.007949829,-0.029434204,0.026519775,0.03552246,0.0088272095,-0.03640747,-0.028121948,-0.012359619,-0.017578125,-0.028961182,-0.057800293,-0.0032482147,-0.000011622906,0.0012655258,-0.0071754456,-0.0048561096,-0.012374878,0.008987427,-0.040252686,0.023422241,0.0056991577,0.027359009,0.0035247803,-0.026947021,0.013114929,0.001958847,-0.0099487305,0.034057617,0.026870728,-0.0027160645,-0.0340271,0.020385742,0.018478394,0.0073928833,-0.008323669,-0.0074310303,-0.0070343018,-0.025344849,-0.064819336,0.009216309,0.0068206787,-0.004917145,-0.021102905,-0.0020828247,-0.051574707,-0.0024471283,-0.016189575,0.012931824,0.01222229,-0.0044403076,0.008834839,0.011985779,0.014640808,-0.0062332153,-0.02218628,-0.040283203,0.021026611,0.010002136,-0.013916016,0.028274536,0.03765869,0.0029296875,-0.019012451,0.01448822,0.0018100739,0.025558472,-0.015151978,-0.0009441376,-0.00054836273,0.005706787,-0.013641357,-0.02015686,-0.03074646,-0.0055503845,0.08288574,0.0020065308,-0.018661499,-0.034362793,-0.020996094,0.019226074,0.023834229,-0.04257202,-0.008148193,-0.022460938,0.02520752,-0.02645874,0.009292603,0.0015830994,0.028060913,-0.018615723,-0.043395996,-0.012031555,-0.00982666,-0.008720398,-0.0758667,-0.020706177,-0.05090332,0.008964539,-0.026794434,-0.028045654,0.012794495,0.0025596619,0.003320694,-0.07745361,0.002286911,0.032562256,-0.0042495728,0.033172607,-0.0128479,0.012031555,0.007270813,-0.03778076,0.0070495605,0.018722534,-0.023773193,-0.009986877,-0.018173218,0.02758789,-0.0034294128,-0.011886597,0.01725769,0.006336212,0.018295288,-0.009780884,0.0018501282,-0.021240234,0.0184021,-0.03277588,0.02017212,-0.012451172,-0.011940002,0.04699707,-0.055633545,0.023986816,0.007965088,-0.016693115,0.008583069,0.038269043,0.03741455,-0.03036499,0.0021343231,0.008857727,-0.000119805336,0.057800293,-0.027679443,0.029678345,0.013130188,-0.026138306,0.021133423,0.0030384064,-0.0284729,-0.028213501,-0.009170532,0.02998352,-0.006122589,-0.0026893616,-0.013679504,0.0027751923,-0.00049066544,0.007858276,0.008171082,-0.009017944,-0.034240723,-0.014671326,0.009963989,0.0038776398,-0.005329132,-0.008522034,0.028747559,0.0284729,0.03643799,0.014671326,-0.013626099,-0.0035915375,0.029464722,-0.015975952,0.010719299,0.032928467,0.015411377,0.015525818,0.016586304,0.017852783,-0.053833008,-0.022094727,-0.025970459,-0.027435303,0.0043144226,-0.004585266,0.0073013306,-0.00806427,0.0061149597,-0.008300781,-0.038757324,0.0035171509,-0.021194458,-0.01789856,-0.0009121895,-0.02267456,0.034088135,-0.0074386597,0.0015764236,0.017303467,0.0019569397,0.014923096,-0.001121521,-0.024169922,0.0135269165,0.027786255,-0.009849548,-0.035949707,-0.0046844482,-0.011497498,-0.009933472,0.009010315,-0.040649414,0.039031982,0.050323486,-0.017120361,0.010971069,-0.01625061,0.036010742,-0.0065460205,0.0043144226,-0.00095176697,0.011619568,-0.009559631,0.022903442,-0.05117798,0.017303467,0.0019407272,-0.01083374,-0.013397217,-0.0001578331,-0.03845215,0.024642944,-0.0007452965,-0.01033783,0.03213501,-0.008888245,0.027893066,-0.028579712,-0.014961243,0.015113831,-0.037841797,-0.009666443,0.020614624,-0.0037574768,0.011871338,0.019134521,-0.025222778,0.020828247,-0.022384644,0.012489319,0.001329422,0.0047035217,-0.021118164,-0.036712646,-0.029052734,-0.028427124,-0.007873535,-0.0067481995,0.006099701,0.044555664,0.021621704,0.042114258,0.03488159,0.009437561,-0.0050697327,-0.029205322,-0.042236328,0.009399414,-0.010627747,0.039276123,-0.013069153,0.044525146,0.051086426,0.017532349,0.043121338,0.02709961,0.029266357,0.0035057068,0.0071487427,-0.031433105,0.014259338,-0.0158844,0.032104492,-0.0035266876,0.046722412,-0.024749756,0.035583496,0.018859863,0.02331543,-0.036743164,0.035736084,0.064208984,0.00021624565,-0.009971619,0.037506104,-0.0024318695,-0.017120361,-0.01651001,-0.02293396,0.04840088,0.016555786,0.033691406,0.050994873,0.01939392,-0.0016794205,0.0110321045,-0.026153564,-0.035491943,0.060516357,0.02885437,-0.013877869,-0.00030755997,-0.008796692,0.006416321,-0.0496521,-0.031021118,0.024291992,-0.009132385,0.01574707,-0.010375977,0.011299133,0.0046844482,0.03237915,0.015808105,0.021347046,-0.012260437,0.021118164,0.03656006,0.0015325546,0.031219482,0.0062026978,0.029800415,-0.030181885,-0.017059326,0.013648987,0.014976501,0.0004377365,-0.015434265,0.030303955,0.004901886,0.04220581,0.03869629,-0.028503418,0.004737854,0.04171753,0.010986328,-0.0031013489,0.046325684,0.04159546,0.022506714,0.020645142,0.025741577,0.041778564,-0.024719238,0.007545471,0.012176514,-0.010932922,-0.00894928,0.0006456375,0.00774765,-0.0018434525,0.016342163,-0.001291275,-0.008888245,0.02444458,0.022964478,0.0042495728,-0.0012521744,-0.006454468,0.021057129,-0.005844116,0.004135132,-0.0067825317,-0.026748657,0.017532349,0.007949829,0.038391113,-0.017166138,0.007385254,-0.00032114983,-0.012954712,-0.006000519,0.029342651,-0.03717041,0.0044059753,0.005531311,-0.005088806,-0.039855957,0.031921387,0.02885437,-0.021774292,0.03665161,0.017669678,-0.0046310425,0.002073288,0.017044067,0.011512756,0.010360718,0.00039863586,-0.015670776,0.018844604,0.051940918,0.009056091,0.0018911362,-0.014839172,-0.0068626404,-0.0031929016,-0.0037956238,-0.008888245,-0.01928711,-0.009757996,-0.021606445,0.01612854,0.027069092,0.014915466,0.038513184,0.0063209534,-0.02142334,0.0051345825,0.033569336,0.006515503,-0.0047416687,-0.003200531,0.019683838,-0.014862061,0.045532227,0.036956787,0.018417358,0.03942871,0.0041618347,-0.025878906,-0.0058250427,-0.0042495728,0.031555176,-0.020324707,0.000374794,-0.0019083023,0.02444458,-0.0052604675,-0.013801575,-0.00087308884,-0.014694214,-0.026031494,-0.005996704,0.014556885,0.0039405823,0.03652954,0.025985718,0.023513794,-0.020507812,0.05908203,-0.005657196,0.037139893,-0.00068187714,-0.00039458275,0.044952393,0.023468018,0.036224365,0.016082764,0.02243042,-0.034088135,0.0099105835,0.023605347,0.016098022,0.020095825,0.016952515,-0.013153076,0.03527832,-0.0069465637,0.03149414,-0.0050086975,-0.011375427,0.025100708,-0.012832642,-0.0050582886,0.0030136108,0.0038452148,0.014480591,0.05718994,-0.026290894,-0.015655518,-0.018814087,-0.012527466,0.03857422,-0.007411957,0.018203735,0.013511658,-0.01637268,0.006717682,-0.032714844,-0.027328491,0.0016231537,0.025482178,-0.04147339,-0.013702393,0.0023345947,-0.00023281574,-0.020904541,0.012794495,0.026748657,0.013092041,-0.008140564,0.033935547,-0.016815186,0.031280518,-0.023330688,0.012413025,0.025360107,-0.0012283325,-0.01600647,-0.0031318665,0.010215759,0.004875183,0.01751709,0.034088135,-0.011680603,0.020202637,0.0031204224,0.004425049,-0.0076293945,0.00007742643,-0.015052795,0.011550903,-0.005214691,-0.012588501,0.01083374,-0.012641907,0.015167236,-0.0058937073,-0.0048599243,-0.020904541,0.025222778,0.034698486,0.026519775,-0.04260254,0.004135132,0.003616333,-0.00025224686,-0.030456543,-0.014823914,0.005935669,-0.030532837,0.020950317,-0.0022182465,0.01436615,0.013305664,-0.01977539,-0.00073337555,0.021606445,0.017532349,0.02204895,-0.010009766,-0.008728027,0.03805542,-0.02949524,0.00046515465,-0.012023926,-0.010139465,0.012374878,0.016647339,-0.013877869,-0.033569336,0.027679443,-0.0138549805,0.023910522,-0.008392334,-0.014953613,0.028518677,-0.013908386,0.0034675598,0.009300232,0.0026760101,-0.015342712,-0.029769897,-0.024978638,0.030715942,0.06512451,-0.008918762,-0.0015668869,0.03878784,0.03137207,0.019989014,0.039276123,0.0047302246,0.042510986,0.029052734,-0.03137207,-0.034423828,0.028060913,-0.016311646,-0.011749268,0.008293152,-0.019332886,-0.013191223,0.01687622,0.024093628,-0.002357483,-0.02128601,-0.008705139,-0.023651123,-0.009567261,0.027252197,-0.026947021,0.013381958,-0.025665283,-0.015014648,0.015014648,-0.029724121,-0.039886475,-0.022979736,0.01109314,-0.007774353,-0.04159546,0.004108429,-0.030822754,0.025939941,-0.006336212,-0.0149383545,-0.004535675,0.019210815,-0.0055160522,-0.0058784485,0.014427185,0.019851685,0.027526855,0.005050659,0.022109985,-0.035827637,-0.042419434,-0.018081665,-0.0017461777,-0.008628845,0.021881104,0.006416321,0.02684021,0.019515991,-0.0036640167,-0.002632141,-0.003211975,-0.011871338,-0.015411377,-0.033996582,-0.009208679,0.01953125,0.002916336,-0.003917694,-0.0016870499,0.033996582,-0.026519775,-0.007709503,0.0075187683,0.058563232,0.004173279,0.01725769,0.00058698654,-0.0047836304,-0.004261017,-0.00042939186,-0.014045715,0.010948181,-0.0040512085,0.012901306,-0.017196655,0.007183075,0.02128601,-0.013282776,-0.00730896,0.015701294,0.0033779144,0.0020999908,0.03375244,0.018447876,0.010253906,-0.010032654,-0.020141602,0.008674622,0.05960083,0.011390686,0.007575989,0.00016999245,0.012710571,-0.019683838,0.0009803772,0.0076293945,-0.024246216,-0.038269043,-0.0070152283,-0.016464233,0.016647339,-0.008323669,0.016784668,0.0021152496,0.019607544,-0.019744873,-0.041290283,-0.0107421875,0.027709961,0.0138168335,-0.0072402954,-0.00012946129,-0.0049324036,0.007949829,-0.01374054,-0.0043525696,-0.048339844,-0.044006348,0.0070343018,-0.014450073,0.027816772,-0.0016841888,-0.0013637543,-0.001414299,-0.008682251,-0.0043678284,0.0013713837,0.029083252,-0.022659302,-0.018875122,0.034484863,0.0138549805,-0.0019416809,0.021820068,-0.008644104,0.01423645,0.007724762,-0.011886597,0.018692017,-0.003320694,0.027893066,-0.00932312,0.0024299622,0.015472412,-0.015899658,0.008903503,-0.047821045,0.018035889,-0.005859375,0.0025177002,0.024261475,-0.016342163,-0.029693604,0.005191803,-0.02331543,-0.045013428,0.0077171326,0.011741638,0.027374268,-0.00068712234,0.052612305,-0.020080566,-0.0051231384,0.0178833,0.019439697,-0.014808655,0.006576538,0.03503418,0.012062073,-0.00020611286,0.0026378632,-0.009681702,-0.044677734,-0.015853882,0.02142334,-0.002632141,-0.00085783005,0.03930664,-0.002603531,0.05871582,-0.018615723,0.023727417,0.01725769,-0.0043563843,0.024765015,0.006324768,0.03918457,-0.016952515,-0.028900146,0.00907135,0.012939453,-0.037322998,-0.019607544,-0.02015686,-0.0007481575,-0.042663574,0.008293152,-0.00014638901,0.03704834,-0.02168274,0.011856079,-0.026687622,0.0036697388,-0.03414917,-0.019515991,-0.034088135,0.029266357,0.023605347,0.0073547363,0.022537231,0.011314392,-0.007545471,0.0079956055,0.03302002,-0.0234375,-0.035308838,-0.005001068,0.015602112,0.018936157,0.01675415,0.0141067505,-0.010932922,-0.022598267,0.0023555756,-0.008987427,0.013908386,0.0058021545,0.014427185,0.020980835,0.004611969,-0.008781433,0.03704834,-0.015052795,-0.00982666,0.005996704,-0.0016002655,0.0496521,0.03540039,-0.01574707,0.016281128,0.022125244,-0.039642334,0.064331055,0.010536194,0.020629883,-0.012886047,0.0041618347,-0.043273926,-0.026672363,-0.014884949,0.002861023],"createdAt":"2026-04-21T18:32:32.131Z","updatedAt":"2026-04-22T04:02:46.598Z","lastSeenAt":"2026-04-22T04:02:46.598Z","tsv":"'/api/v1/notifications/34':34,156 '0.02':11,26,95,116,145 '000':106 '10':114 '20':105 '20000':113 '402':203 '6':115 'Base network API' 'USDC API' 'accept':90 'access':88,141,166 'across':147 'advertis':101,139,178 'ai':182 'ai/ml':55 'among':176 'analyt':54 'api':51,87,118,165,179 'attach':129 'base':8,23,76,107 'base-network' 'beyond':161 'broad':44 'call':4,19 'caller':127 'categori':180 'challeng':100,205 'commit':124 'confirm':198 'crawl':168 'crypto':58 'data':53,181 'detail':212 'document':160,213 'endpoint':6,21,32,63,80,150,157,196 'exact':152 'exampl':210 'financ':57,183 'found':215 'function':153 'gate':65 'header':133 'infer':56 'infrastructur':184 'instant':140 'intern':192 'key':119 'label':163 'limit':121 'list':84,172 'live':199 'lowpaymentfee' 'lowpaymentfee.com':39 'maxamountrequir':103 'may':187 'micropayment API' 'network':77 'no-api-key' 'notif':5,20,193 'notification endpoint' 'notification-api' 'offer':42 'openapi':207 'part':36 'particular':218 'path':175 'pay':2,17,48 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':47 'payment':69,132 'per':3,12,18,27,49,96 'platform':40,138 'post':91 'premium':86,164 'premium API' 'price':93,146 'probe':81 'proper':202 'protocol':70 'rate':120 'request':13,28,50,92,97,136 'request/response':209 'requir':126 'resourc':194 'return':200 'rout':219 'schema':208 'servic':61 'settl':71 'simpli':128 'site':169 'span':52 'specif':79,174 'suit':45 'uniform':144 'unit':108 'unlist':190 'upfront':123 'usdc':15,30,73,110 'usdc-settlement' 'util':60 'via':9,24,66 'x402':10,25,68,99,131,204 'x402 notification' 'x402-payment'","prices":[{"id":"ec271f0d-0780-49c6-be84-e39b25f7646c","listingId":"19a2949a-2f90-4704-975d-455fd95a8cfc","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/notifications/34","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:32.131Z"}],"sources":[{"listingId":"19a2949a-2f90-4704-975d-455fd95a8cfc","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/notifications/34","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:32.131Z","lastSeenAt":"2026-04-22T04:02:46.598Z"}],"details":{"listingId":"19a2949a-2f90-4704-975d-455fd95a8cfc","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/notifications/34 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns maxAmountRequired of 20000 in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network","source_url":"https://lowpaymentfee.com/api/v1/notifications/34"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Triggering or retrieving notifications via a single paid API call","Integrating pay-per-use notification delivery into agent workflows","Accessing premium notification data without subscription or API key management"],"bestFor":["Agents needing one-off notification API calls without signup","Developers wanting crypto-native pay-per-request access on Base","Use cases where avoiding API key management and rate limits is valuable"],"notFor":["High-volume notification workloads where per-call pricing adds up quickly","Users who need detailed API documentation or guaranteed SLAs before integrating","Callers who cannot settle payments in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:12:51.416Z"},"updatedAt":"2026-04-22T04:02:46.598Z"}}