{"id":"b3b8257d-a400-423c-9123-27f6566efd9c","shortId":"nuwAP9","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request 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/62` is listed as \"Premium API Access\" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an x402 payment header to each request.\n\nThe broader platform offers 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 uniformly priced at $0.02 per request.\n\nHowever, the specific functionality of the `/api/v1/policies/62` endpoint is not documented beyond its title \"Premium API Access.\" There is no OpenAPI schema, no request/response examples, and the crawled docs, pricing, and API pages all returned only a \"Connect wallet\" prompt with no additional content. The endpoint is live and responds with a valid x402 challenge, but what it actually returns upon successful payment is unknown.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","json-response"],"categories":["api-platform","infrastructure"],"synonyms":["low payment fee","x402 api","pay per call api","usdc api","base network api","micropayment api","402 payment api"],"warnings":["No documentation available — all doc/pricing/API pages return only 'Connect wallet' with no content","The specific functionality and response format of /api/v1/policies/62 is undocumented","No OpenAPI schema or request/response examples available","Cannot verify what data or service is returned upon successful payment"],"endpointUrl":"https://lowpaymentfee.com/api/v1/policies/62","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/62","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 402 challenge, confirming pricing and payment details. However, there is no documentation of what the endpoint actually does, no OpenAPI schema, no request/response examples, and all doc pages returned only 'Connect wallet' with no content. The specific purpose of /api/v1/policies/62 beyond 'Premium API Access' is entirely unknown.","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":"2026-04-19T08:05:08.791Z","embedding":[-0.014404297,-0.041412354,0.043395996,0.008911133,0.01474762,-0.016464233,-0.03112793,0.013092041,0.08343506,-0.057678223,0.037902832,-0.048583984,-0.042785645,-0.031585693,-0.017105103,0.011436462,-0.0041618347,0.009231567,-0.028549194,0.028808594,0.026443481,0.0005698204,-0.04324341,0.032318115,0.013381958,-0.021850586,0.0036468506,-0.009437561,-0.0143966675,-0.048431396,0.037475586,-0.024154663,-0.014526367,-0.0046958923,-0.016906738,-0.013130188,-0.006385803,0.030136108,0.022109985,0.0048217773,-0.005355835,-0.06640625,0.008163452,-0.019088745,-0.055358887,0.0018596649,0.011138916,-0.029022217,0.003118515,-0.005130768,-0.032836914,-0.010108948,-0.011955261,-0.0026817322,-0.0002065897,0.0074768066,0.0077934265,-0.014961243,0.018157959,0.01423645,-0.0071983337,-0.060424805,-0.025115967,0.006587982,0.018066406,0.06896973,-0.00027441978,0.04147339,0.012458801,0.068359375,0.039123535,0.0574646,0.023986816,0.005393982,-0.014404297,-0.008796692,-0.0053138733,0.05709839,-0.0155181885,-0.027679443,-0.0043563843,-0.0158844,-0.046966553,0.022109985,-0.01889038,-0.0335083,-0.026535034,0.029052734,-0.0067749023,0.02571106,-0.072387695,-0.0013465881,-0.019882202,-0.006263733,-0.0034828186,-0.009147644,-0.00381279,0.030349731,-0.0071525574,0.009223938,-0.018066406,-0.03753662,0.0011310577,0.01525116,0.034179688,0.042510986,0.029663086,0.021057129,0.018630981,-0.0071907043,-0.034057617,0.0046463013,-0.011268616,-0.00642395,0.014884949,0.0008468628,-0.018615723,0.029663086,-0.027679443,0.025527954,-0.053588867,0.04397583,0.008087158,-0.0067253113,0.0068130493,-0.05102539,-0.018615723,0.022964478,-0.024307251,-0.008575439,0.01626587,0.017974854,0.0259552,-0.027679443,-0.037902832,0.025909424,-0.0024490356,-0.018417358,-0.05380249,-0.03338623,0.03475952,-0.033081055,0.021606445,0.03994751,-0.10595703,-0.0011110306,-0.04888916,0.0065193176,-0.026000977,-0.007671356,0.0045776367,0.03829956,-0.00017678738,-0.0037899017,-0.03125,-0.037017822,0.002500534,0.037994385,-0.007411957,0.060058594,-0.02835083,0.044281006,0.018249512,0.01638794,0.026138306,0.02494812,0.010414124,-0.07171631,-0.08526611,-0.03010559,-0.009475708,-0.0155181885,-0.021514893,0.016952515,-0.008995056,-0.087890625,-0.021881104,-0.019515991,0.0069503784,-0.035461426,-0.0039100647,-0.036712646,0.0070610046,-0.012298584,-0.058807373,-0.023223877,-0.033416748,0.05404663,0.01965332,0.024368286,0.03201294,-0.014953613,0.06085205,0.029769897,-0.020751953,-0.023956299,0.016113281,-0.029830933,0.005645752,0.0059814453,0.007385254,-0.031066895,0.0423584,0.072631836,-0.0010290146,-0.01979065,-0.01259613,-0.056854248,-0.03778076,-0.04220581,0.014976501,0.006526947,-0.0022354126,0.03982544,-0.03857422,-0.031829834,0.00440979,0.011299133,0.014137268,0.07775879,0.0048103333,-0.010154724,0.036834717,0.015670776,-0.05810547,0.042999268,0.016677856,0.007965088,-0.03161621,-0.017059326,0.023605347,0.04119873,-0.023910522,0.008460999,-0.026870728,0.027023315,-0.0009841919,0.009719849,0.01234436,-0.022903442,-0.02798462,-0.025299072,-0.013343811,0.030944824,0.002904892,-0.026321411,-0.027389526,-0.07165527,0.042785645,0.0335083,0.02961731,0.001247406,0.009979248,-0.028274536,-0.009963989,-0.057769775,0.06137085,0.066223145,-0.0023841858,-0.01979065,0.025848389,0.0043907166,-0.021270752,-0.006099701,-0.02168274,-0.04324341,-0.021942139,0.010574341,-0.029464722,0.0065193176,0.025405884,0.019210815,0.04586792,-0.010749817,-0.04626465,-0.019744873,0.00053167343,-0.009376526,-0.027648926,0.009552002,-0.0059776306,0.0073127747,0.0017328262,-0.0024719238,0.03616333,-0.0066986084,-0.015602112,-0.0063667297,0.0047416687,-0.019699097,-0.030654907,0.031829834,-0.0042915344,-0.055511475,-0.0028629303,-0.006931305,0.07269287,-0.05722046,0.03942871,-0.0055656433,-0.0009717941,0.057434082,-0.0047035217,-0.04937744,-0.00023710728,0.024246216,0.025177002,0.042938232,0.008483887,-0.033355713,-0.013381958,0.06518555,-0.013656616,-0.009506226,0.014457703,0.0070533752,0.042388916,-0.004497528,-0.061553955,-0.029129028,0.006439209,-0.049194336,0.020904541,-0.018585205,0.029205322,-0.017852783,0.013885498,-0.020706177,0.02420044,-0.02558899,0.011390686,-0.019577026,0.005710602,-0.021209717,0.00044202805,0.0026283264,0.012512207,-0.004814148,0.0129852295,0.024932861,0.008407593,0.0005812645,-0.030395508,-0.032226562,-0.014099121,-0.008308411,0.015701294,0.009765625,0.023101807,0.054992676,-0.032043457,0.0024375916,0.0206604,0.027160645,0.033996582,-0.0059165955,0.007701874,-0.06768799,-0.05657959,-0.02331543,-0.035827637,0.025497437,0.020629883,-0.0038585663,0.041412354,0.008918762,-0.013320923,-0.032806396,0.025146484,-0.04046631,-0.010055542,0.027160645,-0.03253174,-0.022384644,0.017333984,0.001420021,0.0035495758,0.04510498,0.024978638,0.030944824,0.06921387,0.05529785,0.005458832,0.018737793,0.00004720688,0.031021118,0.009140015,-0.022323608,-0.034606934,-0.01576233,0.039245605,-0.019622803,-0.011039734,-0.07067871,0.06072998,0.04043579,0.08282471,0.024337769,0.014137268,0.030059814,-0.01852417,0.012908936,-0.020812988,-0.009559631,-0.033813477,-0.03756714,0.02519226,-0.015090942,-0.009780884,-0.027175903,0.042999268,-0.009338379,0.019729614,-0.023712158,0.04119873,-0.019226074,-0.013916016,0.011650085,0.00894165,0.05419922,0.06604004,-0.046783447,0.036834717,0.026229858,-0.014190674,-0.0002617836,0.03262329,-0.009422302,-0.009719849,-0.048858643,-0.03201294,-0.008804321,-0.009666443,-0.050964355,0.00617218,0.005809784,0.007347107,0.028457642,-0.0015525818,-0.008476257,-0.0051345825,-0.017303467,-0.049346924,0.015144348,-0.036193848,-0.0029563904,0.0501709,-0.01878357,0.00027251244,0.0019254684,-0.013801575,0.0021209717,0.015289307,0.033599854,-0.0010585785,-0.04208374,0.0357666,0.0110321045,0.011909485,0.021881104,0.033569336,0.019943237,0.039916992,0.036346436,0.020309448,-0.013343811,-0.06512451,0.020370483,-0.055511475,0.0077285767,0.022476196,-0.015045166,-0.0008649826,-0.02357483,-0.023071289,-0.019241333,0.019256592,-0.036834717,0.010612488,0.009010315,-0.01234436,-0.026947021,-0.049468994,-0.01525116,-0.0051994324,0.049835205,0.034423828,0.00774765,-0.06451416,-0.006401062,0.017028809,0.012741089,0.040130615,-0.01423645,-0.0064888,-0.020980835,-0.03050232,-0.012084961,-0.038360596,0.026138306,-0.022750854,-0.013824463,0.012054443,0.0023765564,0.019515991,0.01360321,0.011199951,0.020935059,-0.021408081,-0.0037765503,-0.013381958,0.03186035,0.01335907,-0.0093307495,-0.04977417,0.040618896,0.021499634,0.026016235,-0.03543091,0.00045394897,-0.016174316,0.0046424866,0.0043258667,-0.010147095,-0.0033626556,-0.0063972473,-0.04751587,-0.07574463,0.042022705,-0.02949524,0.03579712,0.02178955,0.009162903,0.026901245,-0.006210327,0.0058898926,0.020736694,-0.018341064,-0.009895325,-0.011627197,-0.03253174,-0.033935547,-0.017852783,-0.020629883,0.026977539,-0.025680542,0.01864624,-0.002374649,-0.015792847,0.021362305,-0.0038585663,-0.0065345764,0.0060577393,0.0022907257,0.016357422,0.027618408,0.0045700073,-0.046844482,0.016326904,0.014060974,0.0036792755,-0.0065193176,0.036621094,0.026535034,-0.009155273,-0.010772705,-0.004787445,-0.020874023,-0.01651001,-0.0007042885,0.010253906,0.015083313,0.005706787,-0.029251099,-0.0035629272,0.009002686,-0.03338623,-0.026535034,0.013809204,0.010971069,-0.037475586,0.016647339,0.026016235,0.047058105,-0.026412964,0.005355835,-0.006061554,0.025161743,0.019439697,0.01449585,0.0010852814,0.0211792,-0.0025253296,0.00459671,-0.0011262894,-0.013549805,0.018417358,0.0043563843,0.020843506,0.021713257,0.0045051575,-0.026031494,-0.031829834,0.0069847107,-0.016403198,-0.028808594,0.02998352,0.019012451,0.021331787,-0.023452759,0.015174866,0.014549255,-0.008003235,-0.014289856,-0.012184143,0.040496826,-0.018936157,-0.011116028,0.014717102,0.017044067,0.030441284,-0.04748535,-0.002193451,-0.002298355,0.0053749084,-0.030258179,-0.04626465,-0.03717041,0.013626099,0.046081543,0.019699097,0.012809753,0.028869629,0.012359619,0.011047363,0.027694702,0.0020656586,-0.014587402,-0.017211914,-0.03930664,-0.009895325,-0.020645142,-0.004940033,-0.04171753,0.012008667,-0.012794495,-0.03768921,0.008888245,-0.009376526,-0.01007843,-0.0024738312,0.00047683716,0.022613525,0.0027503967,0.018676758,-0.019622803,-0.042541504,-0.0026512146,0.0058898926,0.02557373,-0.04284668,0.011398315,-0.006576538,-0.0076446533,0.008331299,0.008262634,0.024520874,0.034179688,0.0067710876,0.03036499,-0.04849243,0.044067383,-0.034698486,0.012626648,-0.00187397,-0.0368042,-0.01133728,-0.013587952,-0.011398315,0.03466797,-0.023086548,-0.009643555,-0.028839111,-0.030761719,-0.016738892,-0.055603027,0.0049552917,0.041809082,0.030776978,-0.020309448,-0.00019490719,0.0020866394,-0.0008301735,-0.017120361,0.005142212,-0.006134033,0.04171753,0.023391724,-0.0011081696,-0.04196167,-0.018051147,-0.019134521,-0.0033817291,-0.03237915,-0.05029297,-0.007637024,0.0002720356,-0.0058021545,-0.023635864,-0.025375366,-0.029067993,-0.0061073303,-0.03451538,0.008987427,0.011459351,0.0073776245,0.008338928,-0.040130615,0.005470276,0.016098022,-0.017074585,0.034088135,0.0023021698,-0.0045204163,-0.048339844,0.016235352,0.011016846,0.021957397,-0.011184692,-0.015472412,-0.012954712,-0.019958496,-0.060272217,-0.0056114197,0.0009150505,-0.012718201,-0.0020503998,-0.0019741058,-0.051757812,-0.011222839,-0.013671875,0.008872986,0.0055274963,0.0030212402,0.012496948,0.005744934,0.016784668,-0.00067710876,0.0049095154,-0.03366089,0.016937256,0.010597229,0.0017604828,0.025283813,0.051116943,-0.002565384,-0.02861023,0.011245728,0.007663727,0.015548706,-0.022201538,-0.002779007,-0.02015686,0.000051498413,-0.011665344,-0.021484375,-0.041290283,-0.0024642944,0.0914917,0.00004184246,-0.013587952,-0.010902405,-0.01928711,0.020431519,0.037872314,-0.028945923,-0.008605957,-0.021209717,0.019866943,-0.023132324,0.0022449493,0.00015616417,0.0135650635,-0.006011963,-0.048980713,-0.028625488,0.0069122314,-0.009712219,-0.058258057,-0.02658081,-0.06878662,-0.0012807846,-0.013183594,-0.03289795,0.00046491623,0.0018005371,-0.019760132,-0.07647705,0.012512207,0.05899048,0.013259888,0.028579712,-0.010070801,0.020904541,0.018554688,-0.0473938,-0.014884949,0.03253174,-0.035217285,-0.019226074,-0.02067566,0.02041626,-0.01626587,-0.009223938,-0.007888794,0.0023422241,0.014144897,-0.0039596558,0.008995056,-0.013549805,0.023330688,-0.013969421,0.017578125,-0.012992859,-0.007358551,0.035308838,-0.04711914,0.011222839,0.0135650635,-0.015731812,-0.0053596497,0.024429321,0.038024902,-0.04159546,-0.0234375,0.016708374,0.009933472,0.0418396,-0.025375366,0.05722046,0.019699097,-0.023010254,0.018081665,-0.012962341,-0.01953125,-0.036315918,-0.03149414,0.011779785,-0.016204834,0.012580872,-0.027618408,0.008529663,0.020523071,0.0039634705,0.012084961,-0.010826111,-0.027511597,-0.02470398,0.0059127808,-0.004432678,-0.0032920837,-0.0010433197,0.024337769,0.02468872,0.04296875,0.01979065,-0.012870789,0.0035171509,0.019012451,-0.012428284,0.0067825317,0.026290894,0.0028076172,0.012428284,0.015838623,0.016998291,-0.048675537,-0.017532349,-0.01802063,-0.022399902,0.003900528,0.0019321442,0.00054836273,-0.013809204,0.0061912537,-0.01058197,-0.034942627,-0.001335144,-0.02508545,-0.03475952,0.002817154,-0.030288696,0.01927185,-0.0027103424,0.011680603,0.00157547,-0.0059394836,0.037109375,-0.008262634,-0.0149383545,0.022125244,0.041412354,0.007030487,-0.02407837,-0.0028381348,-0.0127334595,-0.0008788109,0.003320694,-0.03717041,0.0012235641,0.047332764,-0.021835327,0.0098724365,0.012023926,0.027359009,-0.00881958,-0.0045814514,-0.002960205,0.022735596,-0.014533997,0.043273926,-0.0446167,0.019699097,0.0043029785,0.004852295,-0.017990112,-0.01600647,-0.021484375,0.005012512,0.0059432983,-0.015258789,0.05633545,0.009399414,0.027694702,-0.012069702,-0.03543091,0.0037822723,-0.024169922,-0.017227173,0.029312134,-0.004299164,0.005847931,0.01890564,-0.008560181,0.043060303,-0.038848877,0.00969696,0.01159668,-0.006511688,-0.00054454803,-0.018844604,-0.0068588257,-0.011436462,-0.000116825104,0.022766113,-0.0039749146,0.04559326,0.0053977966,0.035095215,0.050476074,0.026641846,-0.0006799698,-0.044799805,-0.020568848,0.005783081,-0.014099121,0.023101807,-0.021133423,0.05606079,0.03237915,0.008026123,0.036743164,0.03390503,0.028320312,0.00945282,0.005420685,-0.018981934,0.018814087,0.01209259,0.026657104,-0.00415802,0.038360596,-0.0395813,0.033569336,0.012130737,0.022644043,-0.03274536,0.03970337,0.064697266,0.017868042,-0.0077285767,0.052947998,-0.014099121,-0.015930176,-0.003446579,-0.011138916,0.05078125,-0.0050811768,0.04257202,0.045928955,0.018707275,-0.003850937,0.029403687,-0.025894165,-0.033172607,0.06402588,0.033416748,-0.029205322,-0.011497498,-0.0015115738,0.006996155,-0.038208008,-0.03274536,0.03326416,-0.010726929,0.0018882751,-0.0045280457,0.0026683807,-0.0068092346,0.01222229,0.010353088,0.000279665,-0.008796692,0.032043457,0.038482666,-0.0044670105,0.029510498,0.0118255615,0.037872314,-0.017440796,-0.020889282,0.020217896,0.024917603,-0.0041618347,-0.0053367615,0.011680603,0.017990112,0.03149414,0.043701172,-0.029052734,0.01637268,0.032196045,0.010070801,-0.0038909912,0.04244995,0.03555298,0.0039901733,0.029876709,0.036499023,0.040893555,-0.043182373,0.0140686035,-0.0046463013,0.0042419434,-0.005016327,-0.0066337585,0.007675171,-0.018966675,0.006969452,-0.011909485,-0.003698349,0.028137207,0.024490356,-0.0039253235,-0.01235199,-0.012123108,0.009185791,-0.01953125,0.0011091232,0.015563965,-0.016677856,0.027877808,0.018035889,0.02798462,-0.023742676,0.020645142,0.001458168,-0.023223877,0.0075149536,0.0181427,-0.03717041,-0.0057640076,-0.007118225,0.010650635,-0.055511475,0.0065078735,0.034423828,-0.009811401,0.027496338,0.012214661,-0.0028495789,-0.018463135,0.026748657,0.012512207,-0.00037240982,-0.005962372,-0.018676758,0.020751953,0.041625977,-0.0027542114,0.0073394775,-0.025146484,-0.008613586,0.0135269165,0.0019683838,0.0005836487,-0.013198853,-0.018554688,-0.032226562,0.01096344,0.036865234,0.021575928,0.058410645,-0.026184082,0.00040888786,0.0050964355,0.036315918,-0.0011320114,0.00749588,-0.0036506653,0.017684937,-0.017623901,0.046173096,0.037841797,0.008293152,0.040893555,-0.0002065897,-0.030136108,0.012046814,-0.0047454834,0.02180481,-0.013160706,-0.0021476746,-0.0000019669533,0.026611328,-0.008171082,-0.03189087,0.0017118454,-0.014533997,-0.028808594,-0.0155181885,0.013290405,-0.0010061264,0.025238037,0.030166626,0.023498535,-0.024154663,0.06048584,-0.01335907,0.041748047,-0.0037612915,-0.007610321,0.043701172,0.010826111,0.034851074,0.015327454,0.01637268,-0.032928467,0.021881104,0.02116394,0.024505615,0.008232117,0.019744873,-0.011428833,0.03869629,0.009613037,0.026748657,-0.003036499,0.0027446747,0.02130127,-0.0036640167,-0.0041236877,-0.007385254,-0.015960693,0.011352539,0.03237915,-0.026901245,-0.008262634,-0.027801514,-0.016326904,0.025512695,-0.013710022,-0.0022697449,-0.0009326935,-0.028427124,0.01789856,-0.014625549,-0.030761719,0.00881958,0.032104492,-0.049987793,-0.0073013306,-0.00024032593,0.022064209,-0.0119018555,0.030685425,0.028793335,0.01234436,-0.000014781952,0.047668457,-0.004261017,0.031555176,-0.0058021545,0.021438599,0.03173828,-0.004711151,-0.025009155,0.006164551,0.016189575,-0.008392334,0.008865356,0.040649414,0.0017023087,0.0037250519,-0.0034370422,-0.0031661987,0.0033359528,0.022109985,-0.016067505,0.0105896,-0.015350342,-0.023086548,-0.0040359497,-0.0023288727,0.003030777,0.0034332275,0.00017368793,-0.011528015,0.012268066,0.033599854,0.020599365,-0.024551392,-0.003698349,0.0158844,0.017990112,-0.022537231,-0.008453369,0.00012981892,-0.0390625,0.01676941,0.013618469,0.010383606,0.017059326,-0.020248413,-0.006526947,0.031341553,0.012397766,0.012428284,0.0068359375,-0.009979248,0.019943237,-0.016235352,-0.0049972534,-0.00894928,-0.0072288513,0.005050659,0.024002075,0.00071144104,-0.030258179,0.028503418,-0.0056610107,0.018157959,-0.0030460358,-0.015533447,0.015258789,-0.008483887,0.005870819,-0.005203247,0.009490967,-0.016113281,-0.014198303,-0.0067634583,0.044036865,0.054351807,-0.012649536,-0.010215759,0.029281616,0.01739502,0.01977539,0.03781128,0.0004107952,0.03414917,0.017700195,-0.025665283,-0.025909424,0.03527832,-0.020568848,-0.034576416,0.019454956,-0.02355957,-0.006893158,0.018157959,0.008735657,0.001408577,-0.039276123,-0.008712769,-0.0154418945,-0.00541687,0.0236969,-0.009117126,0.013191223,-0.018539429,-0.017227173,0.008705139,-0.026275635,-0.053833008,-0.021896362,-0.007221222,-0.012359619,-0.050567627,0.014831543,-0.03503418,0.019683838,-0.031433105,0.0010099411,-0.020980835,0.014953613,-0.012527466,-0.0009508133,0.015083313,0.01876831,0.03024292,0.0032691956,0.012466431,-0.02519226,-0.025604248,-0.028869629,0.0068473816,-0.0061454773,0.023803711,0.0069122314,0.03338623,0.030578613,0.0029335022,-0.00048303604,-0.01108551,-0.006839752,-0.017562866,-0.01776123,-0.027572632,0.021575928,0.0071525574,-0.017868042,-0.01751709,0.048706055,-0.020858765,-0.019897461,0.03262329,0.044921875,0.011650085,0.031311035,-0.020553589,-0.0014181137,-0.016952515,0.006099701,-0.012214661,-0.0022830963,0.012298584,0.0042419434,-0.008560181,0.0005440712,0.021347046,-0.00944519,-0.010307312,0.027908325,0.010375977,-0.006828308,0.028762817,0.007671356,0.009292603,-0.006996155,-0.0058403015,0.016525269,0.055877686,0.021408081,0.0043945312,-0.013206482,0.006225586,-0.018447876,0.0113220215,0.011459351,-0.028839111,-0.040252686,-0.018722534,-0.02923584,0.026824951,0.0002732277,0.0032863617,-0.003036499,0.028533936,-0.017120361,-0.019241333,-0.021255493,0.018203735,0.013748169,-0.023742676,-0.0076904297,0.01676941,0.019439697,-0.038726807,-0.006164551,-0.031921387,-0.026168823,-0.0025844574,-0.029327393,0.030288696,0.016738892,-0.0032577515,-0.0036697388,-0.0043296814,-0.0077400208,-0.009025574,0.025817871,-0.018249512,-0.0077400208,0.030059814,0.019699097,-0.016952515,0.014961243,-0.004917145,0.00015497208,0.012504578,-0.017349243,0.0041275024,-0.02015686,0.039215088,-0.01499939,-0.0015859604,0.034606934,-0.007522583,0.018417358,-0.032958984,0.008293152,-0.006729126,-0.010505676,0.034606934,-0.035888672,-0.026275635,0.0059776306,-0.014846802,-0.031204224,0.0070152283,0.01663208,0.025390625,-0.009880066,0.050476074,-0.010879517,-0.014511108,0.019744873,0.014457703,-0.003604889,0.011695862,0.022323608,0.0065574646,-0.0032787323,-0.008010864,-0.009811401,-0.029586792,-0.010566711,0.025283813,-0.010818481,-0.007774353,0.036468506,0.0068473816,0.04446411,-0.009674072,0.018676758,0.005634308,0.00090932846,0.027511597,0.013282776,0.06750488,-0.010673523,-0.033050537,0.004711151,0.0004017353,-0.02708435,0.000042557716,-0.014045715,0.00026106834,-0.03466797,0.02053833,-0.00566864,0.009468079,-0.025009155,0.0033435822,-0.022003174,-0.00019097328,-0.04397583,-0.007663727,-0.028381348,0.0018367767,0.026916504,0.010513306,0.032287598,0.00522995,-0.016403198,0.021026611,0.041381836,-0.0022296906,-0.028915405,-0.018814087,0.014625549,0.008483887,0.008262634,0.012382507,-0.028625488,-0.023010254,0.0126953125,-0.0129470825,0.012664795,-0.0030345917,0.025405884,0.008369446,-0.003604889,-0.013114929,0.013618469,-0.009628296,0.0010290146,0.014015198,0.0082473755,0.041137695,0.024810791,-0.013450623,0.015670776,0.01689148,-0.035980225,0.051940918,0.00016057491,0.015304565,-0.022949219,0.0033740997,-0.036621094,-0.02116394,-0.009811401,0.013931274],"createdAt":"2026-04-18T18:52:09.277Z","updatedAt":"2026-04-24T00:32:17.090Z","lastSeenAt":"2026-04-24T00:32:17.090Z","tsv":"'/api/v1/policies/62':56,159 '/request':13,28 '0.02':12,27,78,150 '000':72 '20':71 '402':66 '402 payment api' 'accept':46 'access':62,92,169 'across':108 'actual':211 'addit':195 'advertis':83 'ai':118 'analysi':122 'analyt':112 'api':5,20,38,61,85,168,184 'attach':95 'base':8,23,51,73 'base network api' 'beyond':164 'broader':104 'call':4,19,80 'caller':93 'categori':110 'challeng':67,207 'classif':125 'connect':190 'content':196 'convers':142 'crawl':180 'data':111,115 'doc':181 'document':163 'embed':126 'endpoint':55,107,145,160,198 'estim':136 'exampl':177 'exchang':131 'export':116 'feed':130 'financ':127 'four':109 'function':156 'gas':135 'generat':143 'geocod':140 'header':99 'howev':153 'i.e':77 'infrastructur':138 'insight':117 'instant':91 'json-response' 'key':86 'learn':120 'limit':89 'list':58 'live':200 'low payment fee' 'lowpaymentfee.com':31 'machin':119 'metric':113 'micropayment api' 'network':9,24,52 'no-api-key' 'offer':106 'openapi':173 'page':185 'pay':2,17,35 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':34 'payment':48,98,215 'per':3,18,36,79,151 'platform':6,21,39,82,105 'premium':60,167 'price':129,148,182 'prompt':192 'protocol':44 'quot':134 'rate':88,132 'report':114 'request':37,68,102,152 'request/response':176 'respond':202 'return':64,187,212 'schema':174 'sentiment':121 'simpli':94 'specif':54,155 'success':214 'summar':124 'text':123 'titl':166 'token':133 'uniform':147 'unit':74 'unknown':217 'upon':213 'usdc':15,30,47,76 'usdc api' 'usdc-base-network' 'use':41 'util':139 'valid':141,205 'via':10,25 'wallet':191 'web3':128 'x402':11,26,43,97,206 'x402 api' 'x402-payment'","prices":[{"id":"d1dd5629-1c70-4acc-b3d3-eb26da38e013","listingId":"b3b8257d-a400-423c-9123-27f6566efd9c","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/62","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:52:09.277Z"}],"sources":[{"listingId":"b3b8257d-a400-423c-9123-27f6566efd9c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/policies/62","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:52:09.277Z","lastSeenAt":"2026-04-24T00:32:17.090Z"}],"details":{"listingId":"b3b8257d-a400-423c-9123-27f6566efd9c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/policies/62 \\\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 ($0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/policies/62"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/policies/62"},{"claim":"The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API data with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to various utility and data endpoints"],"bestFor":["Developers wanting zero-signup, pay-per-call API access","AI agents that can settle x402 payments autonomously","Users comfortable paying in USDC on the Base L2 network"],"notFor":["Users who need detailed API documentation or response schemas before purchasing","Anyone requiring fiat-only payment methods with no crypto wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:02.053Z"},"updatedAt":"2026-04-24T00:32:17.090Z"}}