{"id":"75d6f26f-2279-4abe-aed5-7450e2f270c3","shortId":"u64nqK","kind":"x402","title":"Pay-per-request API platform on Base network via x402 — $0.02/call in USDC.","tagline":"Pay-per-request API platform on Base network via x402 — $0.02/call in USDC.","description":"lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/policies/91` is listed as \"Premium API Access\" and costs up to $0.02 per request (maxAmountRequired of 20,000 base units of USDC, which is 6-decimal, equaling $0.02). No API keys, rate limits, or subscriptions are required — each call is paid individually via an X-PAYMENT header.\n\nThe broader platform advertises endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at the same $0.02 per request price point and settle payments in USDC on the Base L2 network.\n\nThe specific functionality behind `/api/v1/policies/91` is not documented beyond the label \"Premium API Access.\" The docs, pricing, and API pages all returned only a \"Connect wallet\" prompt with no further technical documentation, OpenAPI schema, or usage examples. Without additional documentation it is unclear what data or service this particular endpoint returns when a valid payment is submitted.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","http-post"],"categories":["api-platform","infrastructure"],"synonyms":["x402 API","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","low payment fee API","402 payment API"],"warnings":["The specific functionality of /api/v1/policies/91 ('Premium API Access') is entirely undocumented — it is unclear what data or service it provides.","All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no technical content.","No OpenAPI schema, request format, or response examples are available.","The platform lists many endpoint categories (AI, finance, analytics, infrastructure) but none have visible documentation to verify actual functionality."],"endpointUrl":"https://lowpaymentfee.com/api/v1/policies/91","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/policies/91","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 schema, no request/response examples, and the actual functionality behind 'Premium API Access' is completely undocumented. The docs/pricing/API pages all render only a wallet-connect prompt with no useful content.","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":"2026-04-19T08:07:24.809Z","embedding":[-0.02166748,-0.044006348,0.037200928,0.011100769,0.020492554,-0.0135650635,-0.040283203,0.021255493,0.07702637,-0.052490234,0.028518677,-0.03878784,-0.038848877,-0.03164673,-0.022705078,0.014549255,0.00094795227,0.008270264,-0.029281616,0.044158936,0.019226074,0.0009765625,-0.04763794,0.024032593,0.018203735,-0.03086853,0.0090408325,-0.011039734,-0.013290405,-0.057800293,0.047180176,-0.032196045,-0.011024475,-0.001543045,-0.023910522,-0.015449524,-0.01373291,0.032348633,0.028121948,0.002500534,-0.009895325,-0.06726074,0.0068092346,-0.012763977,-0.05026245,0.016708374,0.020233154,-0.02507019,-0.0022296906,-0.0049819946,-0.033935547,-0.010070801,-0.021972656,-0.008270264,0.017578125,0.01940918,0.006385803,-0.008087158,0.015625,0.014335632,-0.0065193176,-0.059570312,-0.017440796,0.0023155212,0.0019264221,0.059051514,-0.0042304993,0.024627686,0.018737793,0.070495605,0.05847168,0.058746338,0.026397705,0.007572174,-0.0072250366,-0.013252258,-0.005126953,0.066223145,-0.024490356,-0.016143799,-0.008071899,-0.0015106201,-0.030166626,0.004573822,-0.01524353,-0.036376953,-0.01979065,0.018112183,-0.0109939575,0.017852783,-0.061950684,-0.0021877289,-0.03439331,0.01134491,0.0050811768,-0.009414673,-0.013137817,0.028274536,-0.016311646,0.017288208,-0.019882202,-0.04638672,0.01020813,0.022628784,0.04171753,0.05557251,0.026473999,0.016494751,0.022232056,-0.020355225,-0.033081055,0.010520935,-0.013542175,-0.004814148,0.019744873,0.005836487,-0.037017822,0.034454346,-0.023651123,0.024017334,-0.052734375,0.044952393,0.01625061,-0.013328552,0.0026950836,-0.04788208,-0.029022217,0.022476196,-0.023666382,-0.0052604675,0.03894043,0.01335144,0.023498535,-0.030166626,-0.026245117,0.02748108,0.006542206,-0.022766113,-0.05105591,-0.036071777,0.04284668,-0.022903442,0.024429321,0.029083252,-0.10760498,0.008956909,-0.050354004,-0.00066661835,-0.027862549,-0.0038089752,0.0023345947,0.029815674,-0.012275696,-0.021591187,-0.034118652,-0.040130615,0.020614624,0.038513184,0.0053901672,0.05026245,-0.034973145,0.04650879,0.016326904,0.007881165,0.040405273,0.030715942,-0.00075769424,-0.079711914,-0.09503174,-0.0345459,-0.024536133,-0.012710571,-0.019104004,0.0087509155,0.005218506,-0.08734131,-0.024108887,-0.018997192,0.0077552795,-0.028320312,0.0042877197,-0.038726807,-0.007911682,-0.020080566,-0.05596924,-0.015449524,-0.03955078,0.06036377,0.014907837,0.028823853,0.03250122,-0.017105103,0.049591064,0.022766113,-0.02003479,-0.019042969,0.0046691895,-0.03302002,0.013549805,-0.0029563904,0.01008606,-0.030334473,0.052734375,0.07110596,-0.017227173,-0.0025978088,-0.021026611,-0.061035156,-0.05026245,-0.042022705,0.011375427,0.014213562,-0.016418457,0.025299072,-0.035888672,-0.033966064,-0.00844574,0.016448975,0.014755249,0.07623291,0.0074157715,-0.011016846,0.03265381,0.022445679,-0.061279297,0.04534912,0.010955811,0.011062622,-0.043273926,-0.036468506,0.01638794,0.054351807,-0.025115967,0.019622803,-0.018966675,0.023712158,0.00035881996,0.0112838745,0.0015802383,-0.02079773,-0.015975952,-0.025970459,-0.012413025,0.031463623,0.013969421,-0.03125,-0.023773193,-0.061340332,0.053100586,0.028396606,0.035888672,-0.0029468536,0.002363205,-0.025939941,-0.0076408386,-0.062438965,0.05871582,0.07165527,-0.014854431,-0.012451172,0.02281189,0.014213562,-0.008392334,-0.024475098,-0.020614624,-0.041809082,-0.010810852,0.018585205,-0.029312134,0.0076675415,0.009849548,0.025650024,0.04385376,0.00042510033,-0.043426514,-0.008705139,0.0005874634,-0.014717102,-0.03970337,0.009437561,-0.009780884,-0.012008667,0.009376526,0.00566864,0.031463623,-0.0067329407,-0.015571594,-0.0018224716,-0.008010864,-0.011161804,-0.041290283,0.02607727,-0.0008716583,-0.051940918,0.010040283,-0.0007634163,0.06970215,-0.064086914,0.03250122,-0.014663696,0.018447876,0.045562744,0.0024642944,-0.03829956,0.0071258545,0.031951904,0.009925842,0.02420044,0.011619568,-0.027328491,-0.012435913,0.056732178,-0.0115356445,-0.023208618,-0.003030777,0.011528015,0.035095215,-0.0031833649,-0.050750732,-0.025863647,-0.0031490326,-0.040863037,0.020309448,-0.020721436,0.027038574,-0.0132751465,0.005241394,-0.012748718,0.007522583,-0.030044556,0.022583008,-0.018630981,0.011947632,-0.02468872,-0.0008211136,-0.0011806488,0.026733398,-0.020202637,0.009567261,0.018600464,0.01979065,-0.013412476,-0.03277588,-0.022262573,-0.026931763,0.0026988983,0.016906738,0.020721436,0.023147583,0.056488037,-0.024246216,-0.0060272217,0.019958496,0.008270264,0.030700684,0.0018129349,0.012001038,-0.07672119,-0.06756592,-0.024215698,-0.027282715,0.01612854,0.005897522,-0.0057525635,0.042114258,0.0033340454,-0.02180481,-0.037872314,0.021591187,-0.034210205,-0.0071983337,0.02432251,-0.024429321,-0.016418457,0.018875122,-0.0032424927,-0.00039315224,0.04916382,0.022109985,0.02279663,0.07128906,0.050964355,0.0036792755,0.037475586,0.016174316,0.026046753,0.000243783,-0.028869629,-0.016571045,-0.0069084167,0.046844482,-0.031097412,-0.024017334,-0.062194824,0.04812622,0.03439331,0.07922363,0.02178955,0.015205383,0.031677246,-0.016601562,0.010482788,-0.012557983,-0.015022278,-0.039978027,-0.039764404,0.013442993,-0.018661499,0.0013046265,-0.03137207,0.035858154,-0.010322571,0.023849487,-0.012710571,0.051116943,-0.01638794,0.0030670166,0.018035889,0.0070228577,0.03338623,0.072265625,-0.046844482,0.03463745,0.01625061,-0.023040771,-0.0064926147,0.021820068,-0.017211914,-0.030593872,-0.049865723,-0.036010742,-0.017730713,0.009628296,-0.05831909,0.0032958984,0.0038375854,0.007865906,0.019012451,-0.013122559,0.0031852722,0.0031490326,-0.017684937,-0.0513916,0.021759033,-0.02885437,-0.02079773,0.05493164,-0.006877899,-0.0034980774,0.008544922,-0.005455017,0.015563965,0.011482239,0.030471802,-0.0065689087,-0.0435791,0.022354126,0.015007019,0.00051164627,0.022094727,0.039733887,0.033966064,0.040863037,0.032806396,0.034576416,-0.03048706,-0.06173706,0.0284729,-0.055023193,0.0053367615,0.012367249,-0.019302368,0.0032787323,-0.020507812,-0.021743774,-0.029449463,0.0051498413,-0.03817749,0.008483887,0.01600647,-0.015792847,-0.023376465,-0.051452637,-0.03161621,0.004962921,0.053710938,0.04510498,0.0016078949,-0.060668945,-0.0113220215,0.022262573,0.018539429,0.039276123,-0.013618469,-0.013374329,-0.029129028,-0.036895752,-0.019973755,-0.030136108,0.03451538,-0.009986877,-0.017303467,0.015052795,-0.0007634163,0.012008667,0.010848999,0.012275696,0.01751709,-0.023422241,0.0038013458,-0.007675171,0.027786255,0.011024475,-0.007369995,-0.036743164,0.044158936,0.005996704,0.024978638,-0.041229248,-0.0063591003,-0.009254456,-0.006877899,0.020065308,-0.0013284683,-0.0049438477,-0.0141067505,-0.04309082,-0.06317139,0.046936035,-0.021652222,0.036193848,0.012756348,0.016067505,0.023330688,-0.0021762848,0.005821228,0.016357422,-0.026931763,-0.009353638,-0.0064849854,-0.026855469,-0.045074463,-0.011940002,-0.02178955,0.020828247,-0.025680542,0.027908325,0.0024852753,-0.011642456,0.024932861,0.0007648468,-0.00037193298,0.01537323,0.005317688,0.009750366,0.037750244,0.0040664673,-0.03793335,0.020477295,0.005744934,0.01663208,-0.010467529,0.02204895,0.03173828,-0.017837524,-0.0018014908,-0.0029182434,-0.015731812,-0.019729614,-0.0014076233,0.015686035,0.011001587,0.0054359436,-0.026046753,-0.000032544136,0.018814087,-0.028671265,-0.035186768,0.014678955,0.008529663,-0.045562744,0.017227173,0.02758789,0.047851562,-0.012428284,0.014984131,-0.0043029785,0.04727173,0.008766174,0.014907837,0.0003991127,0.024734497,-0.014854431,0.0048179626,-0.0032787323,-0.008460999,0.031677246,0.019683838,0.014472961,0.03366089,0.009292603,-0.023101807,-0.040283203,0.014907837,-0.012565613,-0.025817871,0.04006958,0.0090789795,0.02357483,-0.025146484,0.014701843,0.02027893,-0.011810303,-0.016021729,-0.0119018555,0.043060303,-0.017944336,-0.015129089,0.01512146,0.013664246,0.022491455,-0.05618286,0.005622864,-0.0005950928,0.0056419373,-0.030212402,-0.043060303,-0.03640747,0.0054016113,0.035339355,0.016693115,0.014549255,0.039489746,0.012390137,0.012825012,0.03062439,0.008682251,0.000037908554,-0.017028809,-0.04638672,-0.02281189,-0.009315491,-0.0027427673,-0.044067383,0.011703491,-0.01499176,-0.035949707,0.007637024,-0.0143966675,-0.0049057007,-0.0018596649,-0.004257202,0.011131287,0.011459351,0.017425537,-0.018234253,-0.03451538,-0.0013151169,0.005138397,0.024505615,-0.042175293,0.0211792,-0.008087158,-0.0040740967,0.01713562,0.017929077,0.02798462,0.04827881,0.015426636,0.038604736,-0.040130615,0.044525146,-0.026748657,0.010345459,-0.007167816,-0.035888672,-0.0026016235,-0.0066184998,-0.0025672913,0.036743164,-0.013870239,-0.008033752,-0.023269653,-0.026733398,-0.013946533,-0.05987549,-0.0018548965,0.03326416,0.039093018,-0.017333984,0.0011854172,0.0034923553,-0.0046844482,-0.022735596,0.008804321,-0.010070801,0.017959595,0.023101807,-0.008087158,-0.0418396,-0.02835083,-0.01448822,0.010612488,-0.038757324,-0.046295166,-0.0020370483,-0.006626129,-0.0047035217,-0.019256592,-0.032684326,-0.038604736,-0.0044403076,-0.036834717,0.012817383,-0.009674072,0.0039520264,0.001045227,-0.02494812,0.012458801,0.017242432,-0.028579712,0.036499023,0.0013570786,-0.000916481,-0.03994751,0.02168274,0.010910034,0.016525269,-0.007965088,-0.026428223,-0.007911682,-0.02003479,-0.05996704,0.0020313263,-0.0028972626,-0.012382507,-0.0005812645,0.0002632141,-0.052886963,-0.00957489,-0.01524353,0.01260376,0.013664246,0.0056266785,0.0096206665,0.0042304993,0.0095825195,-0.0015153885,0.0023975372,-0.042510986,0.019546509,0.009536743,0.009086609,0.023605347,0.04095459,0.004421234,-0.012893677,0.014541626,-0.001657486,0.014259338,-0.017044067,0.0007686615,-0.018066406,-0.008369446,-0.017227173,-0.021835327,-0.04260254,-0.0012760162,0.08270264,-0.0048561096,-0.004951477,-0.0015249252,-0.014007568,0.028778076,0.04800415,-0.031829834,-0.015510559,-0.029907227,0.02079773,-0.016464233,0.010482788,-0.0028953552,0.0067749023,-0.013008118,-0.052947998,-0.02192688,0.00032758713,-0.023254395,-0.055114746,-0.025787354,-0.07446289,0.0013217926,-0.007827759,-0.03845215,-0.0005712509,-0.004058838,-0.011001587,-0.06549072,-0.0027275085,0.04937744,0.014793396,0.03262329,-0.0017385483,0.020874023,0.02619934,-0.046722412,-0.01689148,0.025894165,-0.0209198,-0.019332886,-0.020721436,0.011695862,-0.018325806,-0.00944519,-0.00086832047,0.015914917,0.015007019,-0.009300232,0.009269714,-0.024780273,0.018798828,-0.007194519,0.033294678,-0.019683838,-0.006164551,0.047332764,-0.037017822,0.0127334595,0.008895874,-0.0103302,-0.0074539185,0.02017212,0.04324341,-0.0440979,-0.014877319,0.0129852295,0.008583069,0.04083252,-0.022460938,0.049072266,0.017700195,-0.03274536,0.020599365,-0.004852295,-0.022415161,-0.0496521,-0.023635864,0.014701843,-0.0146865845,0.019180298,-0.019042969,0.0068206787,0.0060043335,0.002708435,0.012084961,-0.029006958,-0.022781372,-0.028579712,0.010475159,0.0025367737,-0.008529663,-0.0075263977,0.025268555,0.02218628,0.046081543,0.019470215,-0.010818481,0.018432617,0.022537231,-0.008453369,0.0052604675,0.026428223,-0.00038409233,0.012397766,0.01802063,0.013771057,-0.045135498,-0.0059127808,-0.010925293,-0.015670776,0.005092621,-0.005054474,0.0041923523,-0.006965637,0.0008172989,-0.008033752,-0.02746582,0.0038909912,-0.023269653,-0.02885437,-0.0013713837,-0.022537231,0.020904541,-0.0055160522,0.0067710876,0.0060691833,-0.004135132,0.040130615,-0.008979797,-0.0075149536,0.020874023,0.048339844,0.009315491,-0.021194458,-0.016189575,-0.012931824,-0.00022244453,0.0040245056,-0.03778076,0.016342163,0.042510986,-0.013641357,0.0014381409,0.004589081,0.0440979,-0.0015716553,0.00944519,0.0006980896,0.020401001,-0.026321411,0.04449463,-0.046325684,0.010131836,0.011154175,0.009590149,-0.0023918152,-0.010360718,-0.023590088,0.013336182,0.0019025803,-0.014144897,0.053863525,-0.0006184578,0.027404785,-0.013221741,-0.032318115,-0.00111866,-0.01209259,-0.019851685,0.03338623,-0.0024604797,0.00459671,0.017990112,-0.007865906,0.03955078,-0.026626587,0.0012159348,0.016021729,-0.012001038,-0.0024967194,-0.024383545,-0.016036987,-0.0031490326,0.0063171387,0.011550903,0.0011034012,0.0440979,0.014579773,0.029708862,0.040222168,0.021697998,0.006702423,-0.045715332,-0.028060913,-0.0030212402,-0.010925293,0.013175964,-0.009300232,0.05508423,0.028869629,0.014213562,0.03829956,0.024475098,0.033172607,0.0039711,0.0043296814,-0.023483276,0.013954163,-0.004562378,0.031219482,-0.0030765533,0.032958984,-0.030136108,0.03390503,0.0065307617,0.017562866,-0.02696228,0.03768921,0.06939697,0.011871338,0.0022468567,0.04006958,-0.006416321,-0.009552002,-0.006389618,-0.010101318,0.05810547,-0.009063721,0.05255127,0.04510498,0.018051147,0.0065574646,0.032196045,-0.027359009,-0.030258179,0.059814453,0.028930664,-0.03817749,-0.0128479,-0.0113220215,-0.00248909,-0.04019165,-0.035125732,0.02217102,0.004989624,-0.006214142,-0.002450943,0.0019950867,-0.00907135,0.010559082,0.007850647,-0.0019683838,-0.0132751465,0.022125244,0.03366089,-0.010421753,0.026855469,-0.0023422241,0.04031372,-0.014144897,-0.025619507,0.021011353,0.016403198,-0.0006132126,-0.004043579,0.010261536,0.0023479462,0.030410767,0.038208008,-0.031463623,0.014816284,0.018554688,0.009544373,-0.0059890747,0.043792725,0.049438477,0.0075645447,0.022399902,0.03274536,0.041107178,-0.033447266,0.009666443,-0.023101807,-0.006713867,-0.012550354,-0.0045433044,0.0065193176,-0.021057129,0.0007762909,-0.0054893494,-0.00066947937,0.025390625,0.036346436,0.009773254,-0.0017051697,-0.009742737,0.014450073,-0.018859863,0.0021591187,0.014762878,-0.0076179504,0.032562256,0.02519226,0.021896362,-0.025787354,0.025375366,0.00019228458,-0.022766113,0.01259613,0.006465912,-0.035003662,0.00024533272,-0.016113281,0.015197754,-0.05657959,-0.0033950806,0.03010559,-0.012962341,0.026290894,0.013519287,-0.0021438599,-0.024719238,0.018005371,0.009399414,-0.002040863,-0.004623413,-0.017028809,0.032287598,0.037017822,-0.010902405,0.0058937073,-0.016235352,0.005695343,0.008544922,0.0037708282,-0.0020065308,-0.0028705597,-0.010429382,-0.033843994,0.014030457,0.028717041,0.025680542,0.05090332,-0.025253296,-0.0048446655,-0.008117676,0.03591919,0.007686615,0.004776001,0.0035934448,0.023025513,-0.015350342,0.042633057,0.03338623,0.009628296,0.023666382,-0.007408142,-0.028289795,0.012557983,-0.014854431,0.015655518,-0.022872925,0.00995636,-0.0042037964,0.025222778,0.00299263,-0.039123535,0.0032520294,-0.012931824,-0.030334473,-0.016662598,0.019714355,-0.007858276,0.024856567,0.02243042,0.012145996,-0.027236938,0.058746338,-0.00605011,0.054107666,-0.012794495,-0.0024662018,0.046173096,0.017501831,0.041748047,0.004940033,0.013771057,-0.03527832,0.02218628,0.031173706,0.02406311,0.01524353,0.015838623,5.9604645e-7,0.04220581,0.008811951,0.030593872,-0.0031490326,-0.0008354187,0.019821167,0.0009899139,0.003314972,-0.009925842,-0.01802063,0.013893127,0.04043579,-0.027893066,-0.0008044243,-0.023590088,-0.016357422,0.02029419,-0.013908386,0.012390137,0.0072517395,-0.03778076,0.018951416,-0.020401001,-0.017913818,0.00818634,0.028121948,-0.043121338,-0.0041542053,0.007881165,0.016708374,-0.016296387,0.03289795,0.026779175,0.012413025,0.007255554,0.04498291,-0.00007212162,0.039154053,0.0041503906,0.019699097,0.034332275,-0.0074920654,-0.014755249,0.0013313293,0.021469116,-0.007598877,0.0024662018,0.04458618,-0.0021324158,0.006023407,0.0060043335,0.0035877228,-0.005996704,0.025756836,0.0037231445,0.013626099,-0.008583069,-0.020874023,0.0044822693,-0.0035495758,0.008666992,0.004272461,-0.009048462,-0.018096924,0.012924194,0.02508545,0.030639648,-0.022735596,-0.0045776367,0.021240234,0.010505676,-0.025100708,-0.012687683,-0.0077056885,-0.029815674,0.022109985,0.012336731,0.014144897,0.020889282,-0.022277832,-0.010734558,0.026519775,0.020111084,0.006008148,0.00440979,-0.007949829,0.01977539,-0.009887695,-0.0003709793,-0.0021018982,-0.009117126,0.0031337738,0.027435303,-0.002002716,-0.021011353,0.025222778,-0.012268066,0.007801056,-0.0007581711,-0.02027893,0.0043754578,-0.0026454926,-0.004901886,-0.0003607273,0.0050811768,-0.01638794,-0.01991272,-0.009712219,0.042388916,0.042114258,-0.0058059692,-0.016098022,0.019348145,0.020843506,0.024353027,0.023864746,-0.0036468506,0.025756836,0.023040771,-0.01940918,-0.023284912,0.018814087,-0.028747559,-0.024917603,0.007827759,-0.018005371,-0.013931274,0.016052246,0.009384155,-0.0035171509,-0.0345459,-0.003501892,-0.011985779,-0.006137848,0.037200928,-0.0060157776,0.011230469,-0.020233154,-0.025558472,0.011245728,-0.03250122,-0.057800293,-0.018356323,-0.0052261353,-0.016235352,-0.054656982,0.011268616,-0.024993896,0.02619934,-0.03366089,-0.0057029724,-0.017562866,0.0143966675,-0.019866943,0.0044822693,0.011604309,0.02746582,0.015449524,0.01234436,0.023223877,-0.030044556,-0.025650024,-0.022140503,-0.0018377304,-0.0043563843,0.009223938,0.012794495,0.035217285,0.015052795,-0.0062294006,0.006877899,-0.0035171509,-0.01727295,-0.015052795,-0.018707275,-0.030899048,0.014678955,0.013259888,-0.010253906,-0.009262085,0.05126953,-0.024734497,-0.01727295,0.037261963,0.051635742,0.015838623,0.03616333,-0.020248413,-0.0034732819,-0.0055885315,0.010238647,-0.0071754456,0.005317688,0.0055656433,0.00793457,-0.010284424,-0.00055122375,0.01184082,-0.012908936,-0.009994507,0.024459839,0.018157959,-0.0018348694,0.03250122,0.0069084167,-0.002779007,-0.0075645447,-0.0051002502,0.014045715,0.062683105,0.020431519,0.0056381226,-0.0065231323,0.00013542175,-0.014968872,0.011123657,0.0071754456,-0.024154663,-0.04397583,-0.022323608,-0.03265381,0.028167725,-0.004005432,0.021713257,-0.0052261353,0.028793335,-0.020141602,-0.016967773,-0.02204895,0.030776978,0.004005432,-0.017791748,-0.008674622,0.009689331,0.020812988,-0.032073975,-0.0041160583,-0.029251099,-0.017868042,-0.0006008148,-0.024902344,0.03463745,0.015686035,0.0013818741,-0.004573822,-0.0048675537,-0.013114929,-0.009002686,0.02394104,-0.013328552,-0.002122879,0.02468872,0.01499176,-0.026351929,0.013931274,0.0041389465,-0.0037822723,0.009468079,-0.012779236,0.013061523,-0.0178833,0.04437256,-0.007545471,0.0061416626,0.035980225,-0.0032958984,0.018722534,-0.038360596,0.013717651,0.0039138794,-0.015335083,0.038879395,-0.03564453,-0.026504517,0.0050086975,-0.023025513,-0.040649414,0.008926392,0.016311646,0.021469116,-0.01763916,0.04336548,-0.0066947937,-0.013717651,0.019088745,0.018814087,-0.0039405823,0.006362915,0.016464233,-0.0013885498,0.00017917156,-0.009254456,-0.013221741,-0.024246216,-0.013145447,0.020874023,-0.015350342,-0.015525818,0.022781372,0.014930725,0.036254883,-0.0040626526,0.023483276,0.013679504,-0.002544403,0.023040771,0.018951416,0.06112671,-0.014198303,-0.033233643,-0.0015239716,-0.0028438568,-0.031311035,-0.0017223358,-0.005821228,-0.0023765564,-0.028717041,0.013771057,-0.000893116,0.009315491,-0.02520752,0.009246826,-0.019699097,-0.010467529,-0.039031982,-0.005065918,-0.030593872,0.020553589,0.030975342,-0.0038375854,0.02355957,0.011192322,-0.014541626,0.02708435,0.04827881,-0.00623703,-0.036254883,-0.007080078,-0.0038528442,-0.0011835098,0.002336502,0.009017944,-0.030471802,-0.019622803,0.013755798,-0.018249512,0.007598877,0.0033664703,0.0061683655,0.0051841736,0.0004892349,-0.007648468,0.021255493,-0.01612854,0.0056419373,0.014411926,0.001405716,0.038604736,0.026504517,-0.011398315,0.019210815,0.019332886,-0.040161133,0.051849365,-0.008285522,0.016571045,-0.017211914,0.010032654,-0.030792236,-0.020736694,-0.005680084,0.0012722015],"createdAt":"2026-04-18T18:52:09.880Z","updatedAt":"2026-04-24T00:32:17.040Z","lastSeenAt":"2026-04-24T00:32:17.040Z","tsv":"'/api/v1/policies/91':56,171 '/call':13,28 '0.02':12,27,67,83,152 '000':73 '20':72 '402 payment API' '6':80 'Base network API' 'USDC pay-per-call' 'accept':46 'access':62,180 'across':109 'addit':205 'advertis':107 'ai':119 'analysi':123 'analyt':113 'api':5,20,38,61,85,179,185 'base':8,23,51,74,164 'behind':170 'beyond':175 'broader':105 'call':94 'categori':111 'classif':126 'connect':191 'convers':143 'cost':64 'data':112,116,211 'decim':81 'doc':182 'document':174,198,206 'embed':127 'endpoint':55,108,146,216 'equal':82 'estim':137 'exampl':203 'exchang':132 'export':117 'feed':131 'financ':128 'four':110 'function':169 'gas':136 'generat':144 'geocod':141 'header':103 'http-post' 'individu':97 'infrastructur':139 'insight':118 'json-response' 'key':86 'l2':165 'label':177 'learn':121 'limit':88 'list':58,148 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':31 'machin':120 'maxamountrequir':70 'metric':114 'micropayment API' 'network':9,24,52,166 'no-api-key' 'openapi':199 'page':186 'paid':96 'particular':215 'pay':2,17,35 'pay-per-request':1,16,34 'payment':48,102,159,221 'per':3,18,36,68,153 'platform':6,21,39,106 'point':156 'premium':60,178 'price':130,155,183 'prompt':193 'protocol':44 'quot':135 'rate':87,133 'report':115 'request':4,19,37,69,154 'requir':92 'return':188,217 'schema':200 'sentiment':122 'servic':213 'settl':158 'specif':54,168 'submit':223 'subscript':90 'summar':125 'technic':197 'text':124 'token':134 'unclear':209 'unit':75 'usag':202 'usdc':15,30,47,77,161 'usdc-base' 'use':41 'util':140 'valid':142,220 'via':10,25,98 'wallet':192 'web3':129 'without':204 'x':101 'x-payment':100 'x402':11,26,43 'x402 API' 'x402-payment'","prices":[{"id":"dac430fd-9692-4b07-b375-68bfb2e7bf23","listingId":"75d6f26f-2279-4abe-aed5-7450e2f270c3","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/policies/91","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:52:09.880Z"}],"sources":[{"listingId":"75d6f26f-2279-4abe-aed5-7450e2f270c3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/policies/91","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:52:09.880Z","lastSeenAt":"2026-04-24T00:32:17.040Z"}],"details":{"listingId":"75d6f26f-2279-4abe-aed5-7450e2f270c3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/policies/91 \\\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 endpoint returns a 402 challenge requesting up to 20,000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/policies/91"},{"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 endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/policies/91"}],"useCases":["Programmatic access to a premium API endpoint with per-request USDC micropayments","Agent-driven workflows that need keyless, pay-as-you-go API access on Base","Exploring x402 protocol integration for crypto-native API consumption"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC on Base for per-call API access","Low-volume consumers who prefer pay-per-use over subscriptions"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume consumers who need bulk pricing or rate-limit guarantees","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:02.086Z"},"updatedAt":"2026-04-24T00:32:17.040Z"}}