{"id":"e7283313-a10d-430e-95f1-6abdeb44f064","shortId":"HLqPFQ","kind":"x402","title":"Pay-per-call email data endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call email data endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This x402-enabled endpoint at `/api/v1/emails/17` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data analytics, AI/ML inference, finance, and utility services. Each call is settled on the Base network using USDC (contract 0x8335…2913) through the x402 payment protocol. The specific resource at `/emails/17` is labeled \"Premium API Access\" and accepts POST requests.\n\nThe x402 challenge advertises a maximum amount of 20,000 base units of USDC (6 decimals), which equals $0.02 per request — consistent with the uniform $0.02 pricing shown across all endpoints on the provider's landing page. No API keys or rate limits are required; payment is handled entirely via the X-PAYMENT header. The endpoint returns `application/json`.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no description of what the `/emails/17` resource actually returns. The endpoint name and path suggest it retrieves or processes email-related data for a specific record (ID 17), but the exact functionality cannot be confirmed from available material.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","email-data","json-response","no-api-key"],"categories":["data","email"],"synonyms":["email API","pay-per-call email","x402 email endpoint","USDC micropayment API","lowpaymentfee email","Base network API","402 payment email"],"warnings":["No documentation available — all doc/API/pricing/README pages show only 'Connect wallet'","No OpenAPI or request/response schema provided; exact functionality of /api/v1/emails/17 is unknown","The endpoint path suggests a single fixed resource (ID 17) rather than a parameterized query — unclear if this is a demo or production resource","Email-related endpoints may involve personal data; verify compliance with applicable privacy regulations"],"endpointUrl":"https://lowpaymentfee.com/api/v1/emails/17","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/emails/17","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response schema, and no explanation of what the /emails/17 resource actually does. The docs pages are empty beyond a wallet-connect prompt. 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":"2026-04-21T19:05:40.538Z","embedding":[-0.008392334,-0.010513306,0.06994629,0.017715454,0.033050537,-0.049743652,-0.025375366,0.029464722,0.074401855,-0.081726074,0.03338623,-0.03643799,-0.037322998,-0.03866577,-0.041992188,0.018203735,0.018325806,-0.013748169,-0.029785156,0.016448975,0.03277588,-0.032318115,-0.027191162,0.026870728,0.00013804436,-0.012962341,-0.03781128,0.011199951,0.016220093,-0.040496826,0.029388428,-0.03567505,-0.009536743,0.013183594,-0.01739502,0.030349731,-0.0069732666,0.03375244,0.01977539,0.0064811707,0.011199951,-0.04510498,-0.0044174194,-0.005718231,-0.039093018,-0.008010864,0.003753662,-0.02468872,0.014793396,-0.0035419464,-0.011581421,0.006504059,0.0034103394,0.01398468,0.0015258789,0.023452759,0.0063819885,-0.013847351,-0.014770508,0.025390625,0.011947632,-0.07318115,-0.038757324,-0.029174805,0.0066604614,0.0501709,-0.015716553,0.04034424,0.021850586,0.084228516,0.026824951,0.06298828,0.036621094,0.013908386,0.013374329,-0.020843506,0.005203247,0.014305115,-0.019729614,-0.03540039,-0.031463623,-0.011550903,-0.043884277,-0.009750366,-0.015602112,-0.050231934,-0.0010318756,0.023345947,-0.024902344,0.026779175,-0.10760498,-0.00819397,-0.00007688999,0.0014953613,0.014907837,-0.0050582886,-0.021102905,-0.0051956177,-0.004432678,0.0073661804,0.01058197,-0.033233643,0.011497498,-0.00044226646,0.027389526,0.011352539,0.024032593,0.0055236816,0.021224976,-0.016494751,-0.0309906,-0.005317688,-0.0053749084,-0.015342712,0.008560181,-0.0059890747,-0.016677856,0.0072250366,-0.029556274,0.010437012,-0.026901245,0.04147339,0.000828743,0.010681152,0.011116028,-0.039367676,-0.007850647,0.002998352,-0.015113831,0.003320694,0.04928589,0.030380249,0.05078125,-0.015075684,-0.031707764,0.016921997,-0.007774353,-0.0030460358,-0.044891357,-0.047302246,0.060516357,-0.02331543,0.024032593,0.030044556,-0.08453369,-0.028289795,-0.035339355,0.012237549,-0.0034103394,0.006828308,-0.0077056885,0.014701843,0.00040078163,-0.002166748,-0.024536133,-0.021652222,0.015136719,0.035369873,-0.018051147,0.029083252,0.0018749237,0.010307312,0.024230957,0.0039367676,0.010673523,0.02520752,0.007423401,-0.07183838,-0.058654785,-0.016113281,-0.00762558,-0.006893158,-0.05053711,0.020553589,-0.010391235,-0.047790527,-0.0043029785,-0.011642456,0.002298355,-0.044891357,0.004627228,-0.03591919,-0.026138306,-0.004016876,-0.06549072,-0.01953125,-0.013450623,0.054107666,0.020477295,0.010978699,0.05014038,-0.02607727,0.043548584,0.027435303,-0.03086853,-0.01626587,0.024215698,-0.012878418,-0.010986328,0.033203125,-0.0007662773,-0.022369385,0.033691406,0.06518555,0.0043907166,-0.024551392,-0.0014371872,-0.04763794,-0.032409668,-0.01725769,0.023788452,0.012138367,-0.0012769699,0.019897461,-0.03665161,-0.03765869,-0.002275467,0.018035889,0.013130188,0.058258057,0.014854431,0.010131836,0.016693115,0.02229309,-0.03994751,0.028686523,0.039764404,0.010070801,-0.018157959,-0.029815674,0.027160645,0.035491943,0.0026874542,0.018341064,-0.011924744,0.023529053,-0.015167236,0.0018606186,0.020431519,0.015396118,-0.03338623,-0.020523071,-0.017608643,0.04034424,0.0048103333,-0.018615723,-0.034332275,-0.06188965,0.054016113,0.047912598,0.035125732,-0.010467529,0.020248413,-0.034179688,-0.02784729,-0.0690918,0.043670654,0.07434082,-0.0021324158,0.0035190582,0.034332275,-0.017562866,-0.027893066,0.029083252,-0.011421204,-0.030258179,-0.012199402,0.0003771782,-0.055389404,0.005050659,0.00061798096,0.040771484,0.054534912,0.0024662018,-0.048065186,-0.016342163,-0.0022506714,-0.0007805824,-0.017105103,-0.0061836243,0.00067424774,0.020355225,0.010978699,-0.032318115,0.023956299,-0.0040512085,0.008598328,0.0132751465,0.01727295,-0.027023315,-0.025817871,0.0029754639,0.004524231,-0.056671143,-0.00705719,0.00034689903,0.05722046,-0.037475586,0.038482666,-0.010467529,-0.0036373138,0.061431885,-0.007446289,-0.045776367,-0.003917694,0.013008118,0.026031494,0.06274414,0.013633728,0.0041007996,-0.012016296,0.072143555,-0.010284424,-0.010597229,0.0020332336,0.020019531,0.031555176,0.014808655,-0.055786133,-0.04208374,-0.012664795,0.011070251,0.013145447,-0.024490356,0.019683838,0.0053367615,0.0049591064,-0.018432617,-0.017929077,-0.026641846,0.001490593,-0.036468506,0.0079956055,-0.020858765,0.02281189,0.021057129,-0.0025615692,0.001200676,-0.0029335022,0.04058838,0.0009636879,-0.0054092407,-0.024932861,-0.042236328,-0.030181885,-0.012054443,-0.0046424866,0.032470703,0.008621216,0.028671265,-0.055999756,0.024414062,0.03010559,0.021743774,0.029632568,-0.0010976791,0.025054932,-0.085998535,-0.034698486,-0.031341553,-0.01235199,0.03451538,0.038909912,-0.0028762817,0.0657959,-0.002691269,-0.039215088,-0.04837036,0.05697632,-0.045013428,-0.0011978149,0.046691895,-0.020065308,-0.01058197,0.0056610107,-0.016723633,-0.002960205,0.04663086,0.017868042,0.039123535,0.07293701,0.05657959,-0.026489258,-0.010696411,0.033050537,0.009796143,-0.0040130615,-0.017211914,-0.018707275,-0.026565552,0.029434204,0.0046081543,-0.012397766,-0.079589844,0.064331055,0.061462402,0.06933594,0.031829834,0.016525269,0.016113281,-0.015167236,0.0076065063,-0.008308411,-0.033355713,-0.018188477,-0.064453125,0.0211792,-0.019454956,0.02166748,-0.03591919,0.01701355,-0.015930176,0.015945435,-0.012962341,0.04824829,-0.0022392273,0.0005311966,0.04574585,-0.0005917549,0.03390503,0.04019165,-0.035186768,0.039398193,0.015213013,-0.04321289,-0.0008120537,0.03894043,-0.01927185,-0.014808655,-0.047210693,-0.027923584,-0.011352539,-0.020629883,-0.044158936,-0.004234314,-0.0037174225,0.010513306,0.048858643,-0.00844574,-0.035461426,0.009086609,-0.014282227,-0.057678223,0.0010709763,-0.037597656,0.012626648,0.038757324,-0.02607727,-0.005180359,-0.015434265,-0.006679535,0.005859375,0.001581192,-0.0060653687,-0.0072250366,-0.030426025,0.011161804,-0.003168106,0.014564514,-0.00013291836,0.018737793,0.012084961,0.049316406,0.026947021,-0.010917664,-0.030181885,-0.06274414,0.034454346,-0.049804688,0.027664185,0.037261963,-0.01020813,-0.0019083023,0.0016670227,-0.0362854,-0.0390625,0.0034484863,-0.045776367,-0.0129852295,0.0178833,-0.0134887695,-0.022994995,-0.04925537,-0.0131073,-0.008399963,0.045532227,0.010223389,0.004928589,-0.05783081,0.0073509216,0.0029315948,-0.0018968582,0.013923645,-0.013946533,-0.019607544,-0.0055122375,-0.023086548,-0.024902344,0.002500534,0.022918701,-0.019210815,-0.008155823,0.021606445,-0.0021762848,0.049804688,0.035064697,0.016860962,0.041748047,-0.026031494,0.0051498413,0.021697998,0.070251465,0.0049209595,-0.029022217,-0.051605225,0.027267456,0.0096588135,0.039764404,-0.028823853,-0.010757446,-0.02154541,0.021743774,-0.002363205,0.011436462,0.005771637,-0.019851685,-0.05038452,-0.08496094,0.032104492,-0.0055351257,0.024536133,0.0082473755,0.009803772,0.020462036,0.0015144348,-0.010383606,0.029312134,-0.029785156,-0.03048706,-0.034362793,-0.025299072,-0.0018720627,-0.019165039,-0.011878967,0.028533936,0.008308411,0.038970947,0.015525818,-0.020095825,0.013885498,-0.0034046173,0.018081665,0.03414917,-0.0017185211,-0.00001847744,0.043701172,0.008918762,-0.039245605,0.031311035,0.0028953552,0.0362854,-0.0010671616,0.046875,0.062347412,0.00484848,0.006511688,-0.00014686584,-0.009635925,-0.035247803,0.009613037,0.002199173,0.028076172,-0.014755249,-0.045837402,0.017471313,0.019104004,-0.045166016,-0.01838684,-0.0024471283,0.017944336,-0.035949707,-0.00048708916,0.018035889,0.04031372,-0.030532837,0.008605957,0.024414062,0.030349731,0.039764404,0.0063323975,0.019439697,0.024108887,0.015304565,-0.0066375732,0.0033016205,-0.009429932,0.016143799,-0.01184082,0.018463135,0.021972656,-0.012031555,-0.008407593,-0.014205933,-0.029846191,0.006591797,-0.016494751,0.016174316,0.034606934,0.03237915,-0.032440186,0.017974854,0.0051193237,-0.0256958,-0.0056877136,0.004470825,0.030380249,0.0021743774,-0.018081665,0.016616821,0.031707764,0.019500732,-0.06112671,-0.014694214,0.0042495728,0.015670776,-0.03994751,-0.03768921,-0.03945923,-0.0055351257,0.020248413,0.006790161,0.017471313,0.036132812,-0.014892578,0.0025482178,0.016921997,0.018066406,-0.024139404,-0.003145218,-0.033233643,-0.0041046143,0.008094788,0.009056091,-0.014381409,0.011619568,-0.0062065125,-0.036102295,0.011817932,-0.03286743,0.0011997223,-0.020111084,0.000934124,0.031204224,-0.0059661865,0.008544922,-0.027542114,-0.03753662,-0.012229919,0.011779785,0.011993408,-0.049835205,0.0075683594,-0.0095825195,-0.011802673,0.010787964,0.009033203,0.022445679,0.010848999,0.0090789795,0.036224365,-0.0680542,0.044921875,-0.0051612854,0.004627228,-0.00096702576,-0.017807007,-0.0088272095,-0.011459351,0.0040893555,0.045043945,-0.015129089,-0.039215088,-0.022094727,-0.064575195,-0.016998291,-0.056274414,0.018951416,0.019439697,0.024261475,-0.009490967,0.018508911,0.0013799667,0.008148193,-0.014457703,-0.0064430237,-0.016311646,0.017669678,0.03378296,0.017410278,-0.027053833,-0.037322998,-0.02229309,-0.012878418,-0.012565613,-0.05105591,-0.010772705,-0.016662598,-0.0009212494,0.0022792816,-0.013641357,-0.014343262,-0.004699707,-0.051574707,0.03479004,-0.0014915466,0.010566711,0.0049591064,-0.034576416,0.004058838,0.008300781,-0.010749817,0.023330688,0.007507324,-0.009757996,-0.008972168,0.00945282,0.02268982,0.016082764,-0.010040283,-0.007167816,0.0041923523,-0.0129776,-0.06488037,-0.0013570786,-0.011947632,-0.0074653625,-0.009292603,0.004611969,-0.047698975,0.023956299,-0.013061523,-0.010894775,0.028640747,0.005554199,0.0050086975,-0.0029449463,0.012687683,0.0048179626,-0.034362793,-0.03353882,0.029129028,0.009918213,-0.008430481,0.050476074,0.02986145,0.0044517517,-0.016418457,0.01473999,0.009742737,0.0028457642,-0.011497498,0.0152282715,-0.009262085,0.010505676,-0.0017089844,-0.016418457,-0.02822876,-0.011383057,0.07519531,0.0017948151,-0.013641357,-0.009170532,-0.02508545,0.012458801,0.024429321,-0.020629883,0.015327454,-0.013595581,0.013694763,-0.019317627,0.021377563,-0.001329422,0.0390625,-0.023544312,-0.0524292,-0.008628845,-0.0076026917,-0.007972717,-0.053741455,-0.037872314,-0.044555664,0.014564514,-0.017364502,-0.0082092285,0.0003681183,0.0015954971,-0.016281128,-0.083496094,0.0076141357,0.039031982,-0.010597229,0.019973755,-0.027816772,0.006477356,0.016662598,-0.016647339,0.0085372925,0.029968262,-0.035583496,0.0021743774,-0.0317688,0.027191162,0.008155823,-0.028289795,0.012031555,-0.005001068,0.021820068,-0.023849487,0.0016880035,-0.013450623,-0.0021095276,-0.030532837,0.015411377,-0.01083374,0.0026874542,0.03112793,-0.031341553,0.029541016,-0.012527466,-0.010314941,0.0026836395,0.02130127,0.04055786,-0.024215698,-0.009468079,-0.00006097555,0.009719849,0.04248047,-0.026367188,0.034698486,0.007850647,-0.019332886,0.015930176,-0.008308411,-0.02381897,-0.034729004,-0.0070266724,0.028640747,0.008262634,0.008285522,-0.015701294,0.013046265,-0.006225586,-0.0068359375,0.0037555695,0.0141067505,-0.013595581,-0.026519775,-0.01335907,0.016342163,0.0043029785,-0.001660347,0.02305603,0.029052734,0.03125,-0.00762558,-0.031311035,-0.0060653687,0.020324707,-0.0023517609,0.0026836395,0.018692017,0.0031280518,0.0038452148,0.015289307,0.0019683838,-0.040496826,-0.008460999,-0.025238037,-0.027496338,-0.009902954,-0.0034770966,0.01424408,-0.0055351257,-0.0046043396,-0.000852108,-0.020553589,0.000031650066,-0.026153564,-0.019378662,-0.0077819824,-0.0012512207,0.024505615,0.0029697418,0.010871887,0.0206604,-0.0028266907,0.015281677,0.018188477,-0.008850098,0.04046631,0.019729614,-0.0009431839,-0.020690918,-0.012229919,-0.011054993,0.0068740845,-0.003736496,-0.0340271,0.0043525696,0.044006348,-0.01676941,0.017608643,0.02154541,0.02279663,-0.017654419,0.0011177063,-0.012039185,0.017913818,0.014663696,0.014343262,-0.04623413,0.026260376,0.012321472,-0.000116467476,0.0024089813,-0.013450623,-0.01637268,0.035888672,0.0069351196,0.0134887695,0.033569336,-0.0013532639,0.022613525,-0.0063591003,-0.012390137,0.01776123,-0.034423828,-0.019943237,0.032196045,0.0030918121,-0.0042381287,0.014183044,-0.03491211,0.0619812,-0.021270752,0.008628845,-0.0072250366,-0.0040283203,-0.016448975,-0.029174805,0.005256653,-0.028717041,-0.025131226,0.010398865,0.00409317,0.05706787,0.026947021,0.03878784,0.038208008,0.0006303787,-0.01828003,-0.056915283,-0.04159546,0.019973755,-0.020706177,0.022949219,-0.02319336,0.046936035,0.037475586,0.012809753,0.04171753,0.030532837,0.038726807,-0.0072288513,0.00014829636,-0.02015686,0.00066137314,-0.011894226,0.0061569214,0.000998497,0.04324341,-0.016693115,0.016937256,0.01651001,0.035858154,-0.02558899,0.030792236,0.063964844,0.019317627,-0.00030755997,0.029968262,-0.0046844482,-0.03668213,0.008773804,-0.004180908,0.05319214,0.022094727,0.038360596,0.05267334,0.010032654,-0.012458801,0.014854431,-0.036010742,-0.025421143,0.03857422,0.034118652,-0.009727478,-0.002796173,-0.0055503845,-0.002784729,-0.05911255,-0.039215088,0.025527954,-0.0032730103,0.015945435,-0.016143799,-0.007843018,-0.0048217773,0.03164673,0.013946533,0.014259338,-0.012077332,0.021560669,0.031433105,-0.0036449432,0.045074463,-0.012763977,0.007904053,-0.015457153,-0.04144287,0.012214661,-0.011634827,-0.0045928955,-0.017654419,0.021331787,0.004787445,0.049438477,0.049041748,-0.006668091,0.01889038,0.03652954,0.007091522,0.015586853,0.049987793,0.01977539,0.0045204163,0.034301758,0.021392822,0.025543213,-0.014053345,0.0129470825,0.014854431,-0.017837524,0.006500244,-0.004863739,0.005393982,-0.006706238,0.019683838,-0.0124435425,-0.011924744,0.018432617,0.029434204,0.007045746,-0.0030021667,0.014305115,-0.0037212372,-0.0074806213,0.003376007,0.006713867,-0.011993408,0.05908203,0.0064048767,0.040374756,-0.003660202,0.02897644,-0.012489319,-0.0064888,-0.018585205,0.03353882,-0.045043945,0.024749756,-0.01008606,-0.010368347,-0.04876709,0.020385742,0.0051193237,-0.0037231445,0.03704834,0.007385254,-0.009811401,0.0070152283,0.03250122,0.017303467,0.0012283325,0.015586853,-0.026245117,0.03265381,0.049804688,0.017578125,0.0048980713,-0.04031372,0.0062446594,0.006855011,-0.0019874573,-0.014015198,-0.013069153,-0.0143966675,-0.036071777,0.025680542,0.019195557,0.008354187,0.04711914,-0.006313324,-0.012641907,0.011512756,0.02708435,-0.004863739,-0.0010480881,-0.0041999817,0.014831543,-0.010398865,0.042816162,0.035858154,0.010955811,0.029159546,0.004398346,-0.008331299,0.0011062622,-0.0107421875,0.017044067,-0.013809204,-0.0011587143,-0.0061073303,0.03277588,-0.02456665,-0.01134491,-0.0016088486,-0.02609253,-0.032287598,-0.0132369995,0.018432617,0.02027893,0.04473877,0.037902832,0.006389618,-0.034484863,0.05819702,-0.026000977,0.030334473,-0.0011816025,-0.01473999,0.054260254,0.041229248,0.034973145,0.008255005,0.02305603,-0.044128418,0.01725769,0.034088135,0.021713257,0.016693115,-0.009567261,-0.033996582,0.028213501,0.000582695,0.014770508,-0.022567749,0.0034179688,0.008079529,-0.0101623535,-0.018707275,-0.009963989,-0.007724762,-0.0031738281,0.031341553,-0.03765869,-0.027130127,-0.017791748,-0.00093984604,0.014472961,-0.014205933,-0.013130188,0.0036258698,-0.023391724,0.0035800934,-0.006931305,-0.022613525,0.006855011,0.037719727,-0.023086548,-0.0035133362,-0.0059394836,0.025924683,-0.023132324,0.027496338,0.030731201,-0.0069732666,0.0008511543,0.04284668,-0.014564514,0.023788452,-0.031555176,0.02420044,0.044891357,-0.00819397,-0.01763916,0.003932953,0.01637268,-0.034179688,0.028671265,0.03366089,-0.012031555,0.004173279,0.004486084,-0.00945282,-0.0074539185,0.005645752,-0.018356323,0.0020656586,-0.00945282,-0.021011353,0.0037403107,0.025802612,-0.01209259,0.0070343018,-0.013221741,-0.013069153,0.0072631836,0.030029297,0.02218628,-0.032287598,-0.020584106,-0.010559082,-0.0036373138,-0.024215698,-0.009262085,0.016220093,-0.04058838,0.016860962,0.017913818,0.0052757263,0.020019531,-0.023498535,-0.0032444,0.031173706,0.0152282715,0.014419556,0.003353119,0.0059394836,0.014266968,-0.0041275024,-0.01398468,-0.006298065,-0.012138367,-0.0038719177,0.025360107,-0.025543213,-0.032104492,0.023880005,-0.013298035,0.010063171,0.00035357475,-0.011932373,0.026779175,0.0039482117,-0.009613037,-0.007446289,0.01184082,-0.016204834,-0.023162842,-0.024398804,0.015434265,0.049804688,-0.014053345,-0.014678955,0.010910034,0.029785156,0.026779175,0.032470703,0.00066185,0.043640137,0.0209198,-0.0095825195,-0.0340271,0.01411438,-0.017715454,-0.018951416,0.016555786,-0.03289795,-0.00844574,0.002313614,0.014503479,-0.00806427,-0.024658203,0.0064735413,-0.013389587,-0.039245605,0.021743774,0.00072574615,0.002948761,-0.024719238,0.0033283234,0.0042304993,-0.024429321,-0.04269409,-0.009246826,0.0043258667,-0.018814087,-0.064575195,0.020385742,-0.026107788,0.013389587,-0.0070343018,-0.000579834,-0.007621765,0.029434204,-0.010391235,0.006969452,0.004676819,0.003917694,0.033477783,0.007724762,0.035064697,-0.03665161,-0.03677368,-0.021820068,0.0061683655,-0.010910034,0.03086853,0.016998291,0.014541626,0.02947998,-0.0034999847,0.0101623535,-0.0045204163,-0.014457703,-0.00623703,-0.032440186,-0.025604248,0.017181396,0.023498535,-0.007980347,0.000009298325,0.033081055,-0.0178833,-0.031982422,0.02935791,0.035614014,0.0049819946,0.03012085,0.0020980835,-0.0006685257,-0.0027065277,0.0028266907,-0.022766113,0.026000977,-0.0041542053,0.0132369995,-0.012191772,0.020141602,0.014793396,-0.0074653625,0.011459351,0.017440796,0.0013141632,-0.010513306,0.027389526,0.007270813,-0.0062332153,-0.008651733,-0.0057525635,0.014373779,0.02923584,0.01386261,0.0181427,-0.0023937225,-0.0026817322,-0.0105896,-0.007972717,0.0046844482,-0.020507812,-0.03173828,-0.015052795,-0.03503418,-0.004798889,-0.002111435,0.0039520264,-0.008033752,0.021316528,-0.012054443,-0.04168701,-0.012557983,0.023498535,0.02909851,0.0048980713,0.0041275024,0.004901886,-0.008049011,-0.036010742,0.016693115,-0.054718018,-0.0395813,0.0014390945,-0.013977051,0.00818634,0.0036315918,-0.005607605,-0.002243042,0.004096985,-0.0027561188,-0.006324768,0.025375366,-0.008605957,-0.0029621124,0.0026416779,0.020095825,-0.012054443,0.021072388,-0.020050049,0.004508972,0.011505127,-0.016281128,0.019012451,-0.0012378693,0.024032593,-0.015281677,-0.015823364,0.011001587,-0.006477356,-0.002254486,-0.04699707,0.0079956055,0.009063721,-0.017623901,0.01739502,-0.016921997,-0.02897644,-0.0033302307,-0.012634277,-0.023086548,0.015686035,0.029785156,0.023803711,-0.0010766983,0.04748535,-0.025787354,-0.013061523,-0.004814148,0.006538391,-0.028335571,-0.010238647,0.02293396,0.005844116,-0.033447266,-0.022537231,-0.006298065,-0.036315918,-0.019241333,0.012832642,-0.011650085,-0.014579773,0.023147583,0.014884949,0.028762817,0.0069236755,0.019317627,0.015022278,-0.0018558502,0.016098022,0.010505676,0.049316406,-0.0076828003,-0.03970337,0.0023498535,-0.004627228,-0.019042969,-0.01171875,-0.008094788,-0.017501831,-0.042053223,0.0069236755,-0.0035076141,0.032928467,-0.009765625,0.027008057,-0.030792236,-0.0050086975,-0.02961731,-0.0072898865,-0.043151855,0.009017944,0.047058105,0.00051927567,0.013977051,-0.018356323,-0.029693604,0.009162903,0.014167786,-0.004550934,-0.03375244,-0.017059326,0.013618469,0.0024604797,0.033294678,0.011390686,-0.024124146,-0.015357971,0.007133484,-0.007972717,0.000500679,-0.007724762,0.0004043579,-0.001707077,0.0033245087,0.014541626,0.037139893,0.0013885498,0.0056037903,-0.008529663,0.0008792877,0.03955078,0.03186035,-0.009292603,0.024932861,0.022918701,-0.043151855,0.05718994,-0.02734375,0.013923645,-0.016815186,0.006362915,-0.046081543,-0.024124146,-0.010673523,-0.012390137],"createdAt":"2026-04-21T18:32:10.931Z","updatedAt":"2026-04-22T10:32:39.124Z","lastSeenAt":"2026-04-22T10:32:39.124Z","tsv":"'/api/v1/emails/17':41 '/emails/17':89,194 '/request':17,34 '0.02':16,33,117,124 '000':108 '0x8335':78 '17':217 '20':107 '2913':79 '402 payment email' '6':113 'Base network API' 'USDC micropayment API' 'accept':96 'access':94 'across':127 'actual':196 'advertis':102 'ai/ml':61 'amount':105 'analyt':60 'api':57,93,137,164 'application/json':157 'avail':226 'base':9,26,73,109 'base-network' 'call':4,21,68 'cannot':222 'challeng':101 'collect':51 'confirm':224 'connect':173 'consist':120 'content':179 'contract':77 'data':6,23,59,211 'decim':114 'descript':190 'doc':163 'document':158 'email':5,22,209 'email API' 'email-data' 'email-rel':208 'enabl':38 'endpoint':7,24,39,129,155,199 'entir':147 'equal':116 'exact':220 'extrem':160 'financ':63 'function':221 'handl':146 'header':153 'id':216 'infer':62 'json-response' 'key':138 'label':91 'land':134 'limit':141 'lowpaymentfee email' 'lowpaymentfee.com':46 'materi':227 'maximum':104 'name':200 'network':74 'no-api-key' 'offer':49 'openapi':183 'page':135,168 'part':43 'path':202 'pay':2,19,54 'pay-per-cal':1,18 'pay-per-call email' 'pay-per-request':53 'payment':83,144,152 'per':3,20,55,118 'platform':47 'post':97 'premium':92 'price':125,165 'process':207 'prompt':175 'protocol':84 'provid':132 'rate':140 'readm':167 'record':215 'relat':210 'render':170 'request':56,98,119 'request/response':186 'requir':143 'resourc':87,195 'retriev':205 'return':156,197 'schema':187 'servic':66 'settl':12,29,70 'shown':126 'span':58 'spars':161 'spec':184 'specif':86,214 'substant':178 'suggest':203 'uniform':123 'unit':110 'usdc':14,31,76,112 'usdc-settlement' 'use':75 'util':65 'via':10,27,148 'wallet':174 'x':151 'x-payment':150 'x402':11,28,37,82,100 'x402 email endpoint' 'x402-enabled':36 'x402-payment'","prices":[{"id":"745feed0-5bb4-4dbc-b3f7-f56c40188743","listingId":"e7283313-a10d-430e-95f1-6abdeb44f064","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/emails/17","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:10.931Z"}],"sources":[{"listingId":"e7283313-a10d-430e-95f1-6abdeb44f064","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/emails/17","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:10.931Z","lastSeenAt":"2026-04-22T10:32:39.124Z"}],"details":{"listingId":"e7283313-a10d-430e-95f1-6abdeb44f064","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/emails/17 \\\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":"Uniform $0.02 per request pricing across all endpoints","source_url":"https://lowpaymentfee.com"},{"claim":"No API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/emails/17"},{"claim":"USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/emails/17"}],"useCases":["Retrieving email-related data on a per-request payment basis without needing an API key","Integrating pay-as-you-go email data access into agent workflows via x402","Programmatic access to email records settled in USDC on Base"],"bestFor":["Developers wanting zero-commitment, per-call email data access","AI agents that can settle x402 payments autonomously on Base","Projects needing low-cost ($0.02) email data lookups without subscription overhead"],"notFor":["Users who need detailed API documentation or response schemas before integrating","High-volume bulk email operations where per-call pricing may add up","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:21.6Z"},"updatedAt":"2026-04-22T10:32:39.124Z"}}