{"id":"9cbed234-975b-4a96-b28d-488b5ab1ca59","shortId":"S3u7Jy","kind":"x402","title":"x402-gated Premium API Access on Base, pay $0.02 per request in USDC.","tagline":"x402-gated Premium API Access on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall on the Base network. The specific resource path `/api/v1/charges/362` does not clearly map to any of the named API categories listed on the provider's landing page (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), so its exact functionality is unclear. It may serve as a generic premium access charge or a specific resource not documented on the homepage.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment in USDC (contract 0x8335…2913 on Base). The maximum amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02 per request. The provider advertises a flat $0.02/request pricing model across all their APIs with no API keys, no rate limits, and instant access.\n\nThe broader lowpaymentfee.com platform offers a variety of endpoints spanning analytics/metrics, AI inference (sentiment analysis, summarization, classification, embeddings), finance/crypto data (price feeds, exchange rates, gas estimates), and utility services (geocoding, validation, conversion). However, the specific `/api/v1/charges/362` endpoint lacks dedicated documentation, input/output schema details, or usage examples. The docs, pricing, and API pages all returned only a \"Connect wallet\" prompt with no substantive content.","tags":[],"capabilities":["x402-payment","usdc-payment","base-network","pay-per-request","no-api-key","post-endpoint"],"categories":["api-gateway","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 API","USDC API access","micropayment API","lowpaymentfee","Base network API"],"warnings":["The specific endpoint /api/v1/charges/362 is not listed among the documented APIs on the provider's homepage — its purpose is unknown.","No input or output schema is provided beyond the basic HTTP POST method declaration.","All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no substantive content.","No OpenAPI spec, examples, or detailed documentation available."],"endpointUrl":"https://lowpaymentfee.com/api/v1/charges/362","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/charges/362","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 input/output schema, and no examples for this specific resource. The docs/pricing/API pages are empty beyond a wallet-connect prompt. The exact purpose of /api/v1/charges/362 is unclear.","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":"2026-04-19T03:54:31.301Z","embedding":[-0.021408081,-0.028762817,0.04699707,0.018753052,0.020889282,-0.01878357,-0.023834229,0.030899048,0.069885254,-0.066223145,0.03378296,-0.038269043,-0.038970947,-0.033172607,-0.021591187,0.011528015,-0.008346558,0.00957489,-0.05984497,0.05441284,0.039489746,-0.02809143,-0.010467529,0.031555176,-0.00044059753,-0.018798828,0.0064201355,-0.018920898,-0.018981934,-0.0256958,0.022781372,-0.01878357,-0.0082473755,0.0090408325,-0.011550903,-0.017715454,-0.015083313,0.052581787,0.036956787,0.007896423,0.0015544891,-0.05899048,-0.0053215027,0.00042819977,-0.04953003,-0.00894928,0.014961243,-0.024429321,-0.013389587,0.005203247,-0.030929565,-0.003692627,-0.015396118,-0.0028934479,0.014099121,0.0064315796,-0.00415802,-0.008857727,0.0035991669,0.005870819,0.0015382767,-0.07348633,-0.0023670197,0.010147095,0.006980896,0.04425049,-0.00207901,0.055511475,0.00064611435,0.064941406,0.04019165,0.049072266,0.053833008,0.013038635,0.01309967,-0.010375977,-0.0009293556,0.053955078,-0.026779175,-0.0037879944,-0.014854431,-0.0043296814,-0.047790527,-0.012672424,-0.015014648,-0.047912598,-0.017608643,0.018981934,-0.026535034,0.024505615,-0.072021484,0.003921509,-0.017822266,0.010604858,-0.0055503845,0.00035262108,-0.014579773,0.014190674,-0.010643005,0.012550354,0.005630493,-0.03817749,0.014137268,0.020721436,0.05871582,0.034851074,0.028900146,0.02960205,-0.020568848,-0.02670288,-0.011726379,0.011909485,-0.019317627,-0.01878357,0.02255249,0.007331848,-0.02128601,0.024627686,-0.029525757,0.01890564,-0.05279541,0.053619385,0.031921387,-0.020736694,0.021759033,-0.04019165,-0.015541077,0.0006041527,-0.047912598,-0.02180481,0.025222778,0.017333984,0.036315918,-0.024246216,-0.020843506,-0.004459381,-0.005924225,-0.02659607,-0.057128906,-0.024749756,0.03363037,-0.025650024,0.0335083,0.037078857,-0.09234619,0.0026302338,-0.047698975,0.008491516,-0.029525757,-0.015556335,-0.0009469986,0.025039673,-0.011184692,-0.019729614,-0.02230835,-0.019943237,-0.009552002,0.032714844,-0.012435913,0.03353882,-0.011367798,0.033111572,0.006702423,0.00415802,0.022216797,0.028564453,-0.0119018555,-0.08648682,-0.08557129,-0.03970337,-0.015586853,-0.017150879,-0.04626465,-0.015640259,0.0054130554,-0.079711914,-0.03463745,-0.010009766,0.0068473816,-0.0340271,-0.011230469,-0.028320312,0.008674622,-0.0024051666,-0.06640625,-0.012008667,-0.021453857,0.07702637,0.016326904,0.010940552,0.023468018,-0.0075683594,0.07659912,0.02217102,-0.032073975,-0.03967285,0.027923584,-0.015686035,0.040405273,-0.00466156,0.009216309,-0.029083252,0.044952393,0.05307007,0.015060425,-0.0118255615,0.008163452,-0.045166016,-0.03616333,-0.04800415,0.00046539307,0.005256653,-0.011604309,0.031173706,-0.028518677,-0.03982544,-0.01499939,0.008422852,0.027526855,0.05038452,0.010513306,0.010765076,0.0061149597,0.022262573,-0.031036377,0.03652954,0.02935791,0.018692017,-0.025939941,-0.019851685,0.032165527,0.028564453,-0.036743164,-0.0034542084,-0.023956299,0.01007843,0.006038666,0.010169983,0.03503418,-0.0132751465,-0.031311035,-0.02079773,0.0022964478,0.020843506,0.010635376,-0.033966064,-0.05215454,-0.07476807,0.04711914,0.04498291,0.03213501,0.0045814514,0.011581421,-0.030715942,-0.0064201355,-0.07159424,0.050933838,0.08428955,-0.017410278,-0.030166626,0.022964478,-0.008659363,-0.02760315,-0.026565552,0.0061798096,-0.024291992,-0.024276733,0.017944336,-0.04425049,0.0032348633,0.01776123,0.02607727,0.06439209,-0.02268982,-0.050109863,-0.02633667,0.004711151,0.004627228,-0.018692017,-0.00067710876,-0.00957489,0.01171875,0.031219482,0.006450653,0.017608643,0.009239197,0.024108887,-0.0082092285,-0.019165039,-0.032440186,-0.016464233,0.008903503,-0.018692017,-0.06530762,0.016464233,0.004245758,0.053253174,-0.040649414,0.05340576,-0.009208679,0.015235901,0.050750732,-0.013320923,-0.04446411,-0.0021266937,0.024002075,0.043273926,0.041931152,0.019012451,-0.015594482,-0.010063171,0.056915283,-0.0059661865,0.0023937225,0.004016876,0.017730713,0.034210205,0.0118637085,-0.06781006,-0.041931152,-0.004108429,-0.032958984,0.028442383,-0.033050537,0.032958984,-0.0077667236,0.02507019,-0.016586304,0.006931305,-0.04043579,0.00869751,-0.006828308,0.008216858,-0.027389526,-0.03555298,0.016784668,0.015029907,-0.015342712,-0.00497818,0.024612427,0.022277832,-0.018081665,-0.029891968,-0.008171082,-0.017593384,0.005279541,0.035247803,0.023483276,0.014465332,0.035491943,-0.040130615,0.022628784,0.031280518,0.0016860962,0.04147339,-0.019500732,0.008140564,-0.047912598,-0.05203247,-0.0236969,-0.039031982,0.022720337,0.01902771,0.010795593,0.044403076,-0.007587433,-0.026763916,-0.024917603,0.01739502,-0.04638672,0.00592041,0.035888672,0.00038862228,-0.041503906,-0.012207031,0.0020046234,0.012779236,0.031188965,0.008911133,-0.0006914139,0.06402588,0.039642334,0.004425049,0.001124382,0.026687622,0.023376465,-0.003332138,-0.029525757,-0.02935791,0.004814148,0.018859863,-0.026611328,-0.022354126,-0.068115234,0.044067383,0.027267456,0.07763672,0.022079468,0.014945984,0.03564453,-0.01737976,0.007797241,-0.040374756,-0.019714355,-0.012878418,-0.037506104,0.041931152,-0.019226074,-0.007331848,-0.031036377,0.033325195,0.011421204,0.0129776,-0.034240723,0.058654785,0.00054073334,-0.0076828003,0.02835083,0.007549286,0.04360962,0.050201416,-0.051818848,0.027023315,0.022720337,-0.03527832,-0.011909485,0.03955078,-0.0036392212,-0.020446777,-0.063964844,-0.026367188,0.0036392212,-0.016906738,-0.061645508,0.0014324188,0.012939453,0.022399902,0.0132751465,-0.011909485,-0.033843994,-0.00051784515,-0.016830444,-0.05331421,-0.009628296,-0.03982544,0.011543274,0.03970337,-0.025894165,-0.004146576,-0.00069761276,-0.00027799606,-0.002828598,0.021957397,-0.00038337708,-0.011833191,-0.05331421,0.03366089,0.014579773,0.009147644,0.01776123,0.036224365,0.053527832,0.013160706,0.046936035,0.017913818,-0.01966858,-0.052581787,0.019638062,-0.03756714,-0.0048828125,0.003955841,-0.014228821,-0.00919342,-0.014541626,-0.026657104,-0.032989502,0.00831604,-0.020645142,0.009895325,0.013893127,-0.053710938,-0.032836914,-0.058563232,-0.01586914,-0.008476257,0.07867432,0.022964478,-0.00920105,-0.056762695,-0.020477295,0.028869629,0.0082092285,0.020385742,-0.016082764,-0.021270752,-0.0034484863,-0.032440186,-0.02268982,-0.019424438,0.025299072,-0.0077323914,-0.020370483,0.022918701,-0.010696411,0.0018987656,-0.0070152283,0.009643555,0.04522705,-0.03161621,-0.0061035156,-0.037109375,0.02027893,-0.0038967133,-0.0043792725,-0.045806885,0.054840088,0.018798828,0.03829956,-0.02670288,0.008964539,0.0025672913,0.009391785,0.020767212,-0.021835327,-0.017959595,0.0038394928,-0.04144287,-0.07098389,0.031585693,-0.020309448,0.028198242,0.0107421875,0.009414673,0.03137207,-0.01852417,0.013397217,0.016601562,-0.02949524,-0.010559082,-0.025726318,-0.03390503,0.002029419,0.0025177002,-0.014526367,0.017364502,-0.008674622,0.009681702,-0.0134887695,-0.025131226,0.04336548,0.013519287,-0.0035133362,0.035614014,0.0011882782,0.020950317,0.05078125,0.0071754456,-0.036956787,0.021484375,-0.010917664,0.006576538,-0.014770508,0.05078125,0.027282715,-0.018173218,-0.007575989,-0.0009880066,-0.023620605,-0.022521973,-0.014205933,0.016723633,0.036956787,0.0042495728,-0.035186768,0.03756714,0.027252197,-0.034301758,-0.0023975372,0.020324707,0.019226074,-0.03250122,0.026779175,0.022628784,0.050994873,-0.014625549,-0.000068604946,0.017593384,0.03111267,0.021743774,0.012306213,-0.019119263,0.017211914,-0.018203735,0.004558563,-0.0063209534,-0.008407593,0.010398865,0.0015974045,0.009338379,0.019454956,0.024551392,-0.018936157,-0.025100708,0.020935059,-0.0029296875,-0.018096924,0.030715942,0.013793945,0.010643005,-0.024475098,0.023864746,0.009986877,-0.03945923,-0.02003479,0.0021400452,0.050445557,-0.024673462,-0.000032544136,0.026016235,0.0011253357,0.034820557,-0.062805176,0.0004901886,0.0062179565,0.019485474,-0.025054932,-0.048583984,-0.030822754,0.009635925,0.023788452,0.0015068054,0.005859375,0.033325195,-0.0059165955,0.0067253113,0.020553589,-0.0033779144,-0.014259338,-0.012458801,-0.05307007,-0.010795593,-0.0048217773,-0.0004181862,-0.031799316,0.008613586,-0.023284912,-0.032989502,0.011886597,-0.013679504,0.00053596497,0.0031375885,0.024490356,0.039886475,0.006652832,0.0038223267,-0.017303467,-0.0055236816,0.007843018,-0.008155823,0.02973938,-0.03970337,0.011886597,-0.013809204,-0.004749298,-0.0118637085,0.0037136078,0.022247314,0.017303467,-0.005836487,0.030380249,-0.038879395,0.041381836,-0.026184082,0.00932312,0.0048446655,-0.053741455,0.0012559891,-0.033996582,-0.017211914,0.033599854,-0.009025574,-0.0024147034,-0.022232056,-0.021652222,-0.007965088,-0.0496521,0.012275696,0.026504517,0.03491211,-0.023544312,-0.000022888184,0.0079574585,-0.0078125,-0.010658264,-0.006591797,-0.018051147,0.021453857,0.019699097,0.011741638,-0.03024292,-0.019638062,-0.007419586,-0.0029354095,-0.05496216,-0.045440674,-0.026870728,0.019317627,-0.012817383,-0.007621765,-0.025299072,-0.020492554,-0.00027608871,-0.03793335,0.015014648,0.010940552,0.03466797,0.008613586,-0.011779785,0.0051841736,0.016815186,-0.016555786,0.026184082,0.0033473969,-0.016555786,-0.040924072,-0.0043678284,0.04257202,0.029388428,0.0010519028,-0.024871826,-0.0048942566,-0.031173706,-0.05291748,-0.00831604,-0.0033721924,0.0011701584,-0.00084733963,0.0041122437,-0.049987793,-0.012748718,-0.029327393,-0.0057754517,0.01878357,0.011581421,0.02104187,-0.007347107,0.0037345886,-0.005256653,-0.0099487305,-0.033203125,0.013977051,0.011566162,0.008628845,0.0067367554,0.035705566,0.009063721,-0.011116028,-0.0042266846,-0.00092840195,0.008651733,-0.02230835,0.019989014,-0.0041923523,0.012138367,-0.008010864,-0.0065460205,-0.03591919,-0.004016876,0.07714844,0.0029506683,0.001461029,0.000916481,-0.008682251,0.008918762,0.018554688,-0.061035156,-0.005596161,-0.034423828,0.008262634,-0.013908386,0.025863647,0.0065689087,0.010818481,-0.030090332,-0.061584473,-0.008354187,0.022003174,-0.009979248,-0.059570312,-0.011894226,-0.05709839,-0.016601562,-0.0053863525,-0.019363403,0.005542755,0.008049011,-0.012184143,-0.08428955,0.0073509216,0.05569458,0.00881958,0.015808105,-0.016998291,0.014205933,0.025253296,-0.016616821,-0.013809204,0.030731201,-0.022369385,-0.021850586,-0.016952515,0.037322998,-0.013725281,-0.023712158,0.01725769,0.012031555,0.011520386,-0.00258255,0.017868042,-0.014259338,0.013298035,-0.0024547577,0.013191223,-0.00674057,-0.011581421,0.024154663,-0.042388916,0.022888184,0.021697998,0.0053138733,-0.0006213188,0.019851685,0.031036377,-0.044433594,-0.005508423,0.043762207,-0.007709503,0.04321289,-0.03543091,0.04537964,0.018356323,-0.00422287,0.01612854,-0.008651733,-0.03756714,-0.037475586,-0.03942871,0.021118164,0.013641357,0.011131287,-0.00042939186,0.0031394958,0.019866943,-0.008018494,-0.00040602684,-0.016296387,-0.0143966675,0.0004594326,0.007068634,-0.0060195923,0.0095825195,-0.0049209595,0.026779175,0.008834839,0.046966553,-0.0032539368,0.0048828125,0.0060157776,0.018997192,-0.017288208,0.0076828003,0.015380859,0.017608643,0.026657104,0.014816284,0.022064209,-0.03656006,-0.018295288,-0.013977051,-0.0022602081,0.007648468,-0.005378723,-0.0029640198,-0.0033359528,0.0024318695,-0.0012130737,-0.041778564,0.016113281,-0.040008545,-0.019973755,0.0011854172,-0.011581421,0.010810852,0.010765076,-0.002796173,0.016998291,-0.002286911,0.06097412,0.0027217865,-0.012466431,0.019302368,0.032958984,0.01486969,-0.036834717,-0.0071907043,-0.009147644,-0.00026631355,0.005393982,-0.007797241,0.019744873,0.0491333,-0.0013513565,0.018615723,-0.021087646,0.022598267,-0.002670288,0.013412476,-0.012237549,0.0077323914,-0.01676941,0.025283813,-0.04663086,0.019714355,0.030822754,0.0029945374,-0.0057678223,-0.021575928,-0.028167725,0.021026611,0.012901306,-0.004398346,0.05230713,-0.011619568,0.025039673,-0.020965576,-0.013946533,0.015838623,-0.026641846,-0.016159058,0.03086853,-0.0013227463,0.009979248,0.012428284,-0.027145386,0.024368286,-0.0390625,0.020767212,-0.00035381317,0.0017786026,-0.018188477,-0.024139404,-0.024993896,-0.0074272156,-0.016281128,0.0011901855,0.0065078735,0.044281006,0.03173828,0.03086853,0.043060303,0.014099121,0.015930176,-0.045135498,-0.016738892,-0.0046691895,-0.04046631,0.010124207,-0.02017212,0.03262329,0.044128418,0.006164551,0.03829956,0.049835205,0.028274536,0.012672424,0.019302368,-0.027282715,0.019622803,-0.004070282,0.02418518,0.009246826,0.039031982,-0.0079574585,0.009262085,-0.00390625,0.034240723,-0.036132812,0.016616821,0.07470703,0.023468018,-0.0028800964,0.03164673,-0.0077323914,-0.008605957,-0.02708435,-0.017822266,0.056427002,0.00084257126,0.03265381,0.04373169,0.018325806,-0.01939392,0.022247314,-0.025497437,-0.039123535,0.063964844,0.027389526,-0.019729614,-0.010696411,-0.0211792,0.007408142,-0.04727173,-0.019042969,0.015991211,0.0019493103,0.02128601,-0.012329102,-0.005908966,-0.011276245,0.02470398,0.008308411,0.011001587,-0.011962891,0.01828003,0.021408081,0.024795532,0.021209717,-0.00087690353,0.03062439,-0.0335083,-0.0064086914,-0.00022232533,0.022964478,-0.01550293,-0.002500534,0.02708435,0.01777649,0.05908203,0.034698486,-0.011528015,-0.00217247,0.020431519,0.022491455,0.00005966425,0.038635254,0.04257202,0.018432617,0.027496338,0.044433594,0.023757935,-0.029876709,0.009231567,-0.004749298,0.015571594,0.001789093,-0.013839722,0.011192322,0.004295349,0.018447876,0.0033607483,-0.013259888,0.028305054,0.03024292,-0.0020427704,-0.0009889603,-0.004650116,0.011444092,-0.008735657,0.0071105957,0.008987427,-0.017837524,0.013015747,0.0009522438,0.03591919,-0.025619507,0.014450073,-0.006515503,-0.02532959,-0.0061569214,0.018341064,-0.040283203,0.00071525574,0.0005311966,-0.012817383,-0.0357666,0.006061554,0.018661499,-0.010437012,0.02029419,0.01625061,-0.004470825,0.005645752,0.019821167,0.01612854,-0.009895325,-0.016967773,-0.013946533,0.03274536,0.042816162,0.0007753372,0.015098572,-0.019622803,-0.0014152527,0.008102417,-0.0076446533,-0.0063972473,-0.0017204285,-0.014228821,-0.029403687,0.0110321045,0.039916992,0.02355957,0.0287323,-0.0030231476,-0.023635864,-0.0069885254,0.017150879,0.011314392,-0.003604889,-0.013038635,0.029190063,-0.0029125214,0.04269409,0.03552246,0.00084495544,0.034942627,-0.011787415,-0.0075302124,0.008987427,-0.027786255,0.02142334,-0.027191162,0.0066337585,-0.022445679,0.019683838,-0.022003174,-0.027389526,0.0029792786,-0.015823364,-0.016601562,-0.027053833,0.00086832047,0.010932922,0.016464233,0.04144287,0.017837524,-0.020202637,0.070739746,-0.011329651,0.05102539,-0.013832092,-0.006587982,0.04272461,0.038482666,0.03955078,0.022613525,0.004047394,-0.035064697,0.0011768341,0.040618896,0.03253174,0.0073051453,-0.0008969307,-0.015205383,0.028625488,-0.008720398,0.029403687,-0.012023926,-0.0013694763,0.005844116,-0.009750366,-0.013931274,0.0069885254,-0.0013504028,0.008415222,0.054595947,-0.02607727,-0.0059928894,-0.022415161,-0.014137268,0.036376953,0.0031337738,0.0073127747,-0.008583069,-0.017456055,0.01146698,-0.027694702,-0.0146102905,0.009231567,0.026916504,-0.055114746,-0.028060913,0.01071167,0.018112183,-0.02671814,0.027923584,0.025863647,-0.0068473816,0.0101623535,0.04434204,-0.011619568,0.039245605,0.0007457733,0.026184082,0.034179688,0.0032043457,-0.021987915,0.000065505505,0.008262634,-0.017059326,0.010284424,0.03866577,-0.0044898987,0.008720398,-0.0027427673,-0.013572693,0.008003235,0.0041923523,-0.019622803,0.008666992,-0.009719849,-0.008308411,0.011444092,0.010635376,0.006084442,0.007411957,-0.015060425,-0.0102005005,-0.0024681091,0.03466797,0.015205383,-0.053375244,0.0017976761,0.012138367,0.0030879974,-0.027267456,-0.023712158,-0.019592285,-0.025253296,0.01751709,0.026611328,0.007797241,0.0071029663,-0.021224976,-0.00033473969,0.033447266,-0.0018615723,0.022125244,0.0010795593,-0.013710022,0.013679504,-0.019226074,0.0074691772,-0.005874634,-0.014839172,0.011749268,0.007385254,0.0017929077,-0.031066895,0.022125244,-0.0072250366,0.025680542,0.004306793,-0.012428284,0.024505615,-0.010368347,-0.015625,0.015068054,0.02168274,-0.010368347,-0.012870789,-0.03427124,0.0146102905,0.054473877,-0.00819397,-0.0077171326,0.010574341,0.025741577,0.029953003,0.040222168,0.017211914,0.03829956,0.02319336,-0.014526367,-0.022613525,0.01979065,-0.014137268,-0.029876709,0.02432251,-0.0065994263,-0.0026607513,0.023910522,0.010536194,-0.006881714,-0.02331543,-0.018066406,-0.009025574,-0.023483276,0.019348145,-0.018814087,0.01966858,-0.027862549,-0.014259338,0.008659363,-0.0146102905,-0.04522705,-0.029251099,-0.008483887,-0.014045715,-0.056121826,0.0012598038,-0.031921387,0.008361816,-0.02067566,0.0015745163,-0.0057411194,0.028793335,-0.017333984,-0.004131317,0.0035037994,0.028060913,0.009346008,0.015541077,0.011428833,-0.028869629,-0.027893066,-0.013092041,-0.0041542053,-0.016815186,0.015342712,-0.005176544,0.033233643,0.011657715,-0.008003235,-0.0011510849,-0.009384155,-0.005332947,0.00027918816,-0.0385437,-0.024749756,0.011352539,0.032592773,-0.009017944,-0.017471313,0.034942627,-0.018081665,-0.008583069,0.019592285,0.03805542,0.01159668,0.027633667,-0.017074585,0.0012197495,-0.026382446,-0.007259369,-0.011749268,0.0067214966,0.008354187,-0.0017757416,-0.0028419495,0.00047945976,0.015930176,-0.010826111,-0.007499695,0.02772522,0.006126404,-0.03012085,0.03552246,0.015449524,0.002603531,-0.007835388,-0.014381409,0.023864746,0.04788208,0.012878418,0.0045433044,0.0022945404,0.0059127808,-0.006164551,0.010467529,0.013168335,-0.025039673,-0.035186768,-0.026794434,-0.019348145,0.019851685,0.0059051514,0.032836914,0.0064964294,0.015930176,-0.01386261,-0.021881104,-0.023361206,0.02458191,-0.0014400482,-0.017501831,-0.011375427,-0.0014705658,0.026351929,-0.025939941,0.0070877075,-0.033111572,-0.023239136,-0.018981934,-0.02204895,0.01499939,-0.002445221,-0.0049209595,0.01600647,-0.0023727417,-0.009399414,0.0066337585,0.03375244,-0.017425537,-0.0048980713,0.014526367,0.013313293,-0.024154663,0.00242424,-0.006587982,-0.014419556,0.018005371,-0.014122009,0.015136719,-0.017059326,0.03353882,0.015914917,-0.0021877289,0.03152466,-0.0022773743,0.022399902,-0.016281128,0.0012712479,-0.002122879,-0.004383087,0.03781128,-0.012519836,-0.018569946,0.018325806,-0.01928711,-0.03805542,0.011360168,0.023132324,0.03161621,-0.019058228,0.030761719,-0.022064209,-0.021499634,0.001832962,0.015365601,-0.017547607,0.0007815361,0.032806396,0.013725281,0.00019907951,0.00504303,-0.010467529,-0.04067993,-0.012207031,0.024368286,-0.0031223297,-0.010917664,0.010246277,0.009155273,0.050201416,0.008308411,0.016616821,0.02355957,0.0033893585,0.03111267,0.00699234,0.041137695,-0.0017957687,-0.030334473,0.001584053,-0.0006337166,-0.009559631,-0.0126571655,-0.0009870529,0.0015954971,-0.038482666,0.015258789,-0.011947632,0.042663574,-0.021881104,0.0069389343,-0.023162842,-0.004135132,-0.028137207,-0.009628296,-0.04071045,0.018997192,0.031402588,0.016036987,0.0039749146,0.0054473877,-0.016021729,0.03048706,0.04626465,-0.009529114,-0.032318115,-0.005542755,0.013145447,-0.0002863407,-0.004333496,0.023406982,-0.01108551,-0.011955261,0.0008997917,-0.023040771,0.008132935,-0.008018494,0.019973755,0.0066452026,-0.011955261,-0.009284973,0.023880005,0.0095825195,0.008544922,0.012939453,-0.0011177063,0.035247803,0.03793335,-0.017227173,0.021392822,0.024154663,-0.039001465,0.04852295,-0.014297485,0.030380249,-0.014503479,0.00843811,-0.03842163,-0.010604858,-0.0010976791,0.015914917],"createdAt":"2026-04-18T18:45:09.644Z","updatedAt":"2026-04-24T00:31:57.171Z","lastSeenAt":"2026-04-24T00:31:57.171Z","tsv":"'/api/v1/charges/362':49,198 '/request':146 '0.02':10,24,137,145 '000':127 '0x8335':117 '20':126 '2913':118 '6':132 'Base network API' 'USDC API access' 'accept':108 'access':6,20,36,89,162 'across':149 'advertis':142 'ai':70,174 'amount':123 'analysi':177 'analyt':69 'analytics/metrics':173 'api':5,19,35,59,152,155,213 'base':8,22,43,120,128 'base-network' 'behind':37 'broader':164 'categori':60 'challeng':102 'charg':90 'classif':179 'clear':52 'confirm':103 'connect':219 'content':225 'contract':116 'convers':194 'data':68,182 'decim':133 'dedic':201 'detail':205 'doc':210 'document':96,202 'embed':180 'endpoint':30,105,171,199 'equal':136 'estim':188 'exact':78 'exampl':208 'exchang':185 'feed':184 'financ':73 'finance/crypto':181 'flat':144 'function':79 'gas':187 'gate':3,17 'generic':87 'geocod':192 'homepag':99 'howev':195 'infer':175 'infrastructur':75 'input/output':203 'instant':161 'key':156 'lack':200 'land':66 'learn':72 'limit':159 'list':61 'live':107 'lowpaymentfee' 'lowpaymentfee.com':32,165 'machin':71 'map':53 'maximum':122 'may':83 'micropayment API' 'model':148 'name':58 'network':44 'no-api-key' 'offer':167 'page':67,214 'path':48 'pay':9,23 'pay-per-call API' 'pay-per-request' 'payment':113 'paywal':40 'per':11,25,138 'platform':166 'post':109 'post-endpoint' 'premium':4,18,34,88 'premium API' 'price':147,183,211 'prompt':221 'provid':33,64,141 'rate':158,186 'request':12,26,110,139 'requir':112,124 'resourc':47,94 'return':216 'schema':204 'sentiment':176 'serv':84 'servic':191 'span':172 'specif':46,93,197 'substant':224 'summar':178 'unclear':81 'unit':129 'usag':207 'usdc':14,28,115,135 'usdc-payment' 'util':190 'valid':193 'varieti':169 'wallet':220 'web3':74 'x402':2,16,39,101 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"e0e574c9-899b-4775-a0be-2d1067d0cb27","listingId":"9cbed234-975b-4a96-b28d-488b5ab1ca59","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/charges/362","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:45:09.644Z"}],"sources":[{"listingId":"9cbed234-975b-4a96-b28d-488b5ab1ca59","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/charges/362","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:45:09.644Z","lastSeenAt":"2026-04-24T00:31:57.171Z"}],"details":{"listingId":"9cbed234-975b-4a96-b28d-488b5ab1ca59","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/charges/362 \\\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 x402 challenge requiring USDC payment on Base network with maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/charges/362"},{"claim":"The provider 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 is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/charges/362"},{"claim":"The provider lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Paying per-request for API access without needing an API key or subscription","Agent-driven programmatic access to premium endpoints using x402 USDC payments","Testing x402 payment flows on the Base network"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing keyless, pay-per-call API access","Low-volume consumers who want no subscription commitments"],"notFor":["Users needing detailed API documentation or guaranteed SLAs","High-volume production workloads where per-request pricing may add up","Anyone requiring clear input/output schemas before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:22.386Z"},"updatedAt":"2026-04-24T00:31:57.171Z"}}