{"id":"9737cbf5-c263-4365-a904-829a924984c7","shortId":"Xt3MEe","kind":"x402","title":"Pay-per-call premium API access via x402 on Base, settled in USDC at $0.02/request.","tagline":"Pay-per-call premium API access via x402 on Base, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall on the Base network. The provider operates a broad catalog of pay-per-request APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\n\nThe specific endpoint `/api/v1/stripe/charges/3` is labeled \"Premium API Access\" in the x402 challenge. Its maxAmountRequired is 20000 base units of USDC (contract 0x8335…2913 on Base, 6 decimals), which equals $0.02. Payment is made via the x402 exact scheme by including an X-PAYMENT header. The endpoint accepts HTTP POST requests and returns application/json.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available. The actual functionality behind the \"Premium API Access\" label for this particular route (`/stripe/charges/3`) is unclear and may differ from the other listed API categories. Users should be aware that the endpoint's behavior is not documented beyond its title.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","http-post","json-response"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all render only 'Connect wallet'","No OpenAPI or schema definition found for request or response payloads","The specific functionality of the '/api/v1/stripe/charges/3' route is unclear; 'Premium API Access' is a generic label","No examples or usage guides available from the provider"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/3","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/stripe/charges/3","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 it is operational. However, documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and no examples. The specific functionality of '/api/v1/stripe/charges/3' labeled 'Premium API Access' is ambiguous.","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":"2026-04-19T09:38:58.876Z","embedding":[-0.014060974,-0.03010559,0.019073486,-0.0017957687,0.010871887,-0.024536133,-0.03869629,0.045776367,0.05429077,-0.078063965,0.039123535,-0.03781128,-0.037994385,-0.034851074,-0.027374268,0.0048103333,-0.007129669,0.011947632,-0.05227661,0.055389404,0.02722168,-0.013465881,-0.013458252,0.022659302,-0.012336731,-0.02583313,-0.008216858,-0.03265381,-0.013618469,-0.023651123,0.015380859,-0.026290894,0.0042648315,0.013626099,-0.016067505,-0.023895264,-0.015716553,0.047210693,0.027313232,-0.013809204,-0.0023384094,-0.06750488,-0.0001565218,-0.010299683,-0.041503906,0.007911682,0.022781372,-0.0032730103,0.0018796921,0.018997192,-0.0513916,-0.013763428,-0.010185242,-0.004463196,0.014984131,0.005142212,0.0012760162,-0.013557434,0.001906395,0.00008273125,0.021957397,-0.07611084,-0.023025513,-0.020126343,0.003145218,0.06341553,-0.002040863,0.047943115,0.017791748,0.046661377,0.043823242,0.04711914,0.03363037,0.007019043,-0.0007610321,-0.0129776,0.015571594,0.07244873,-0.0077667236,-0.00043272972,-0.020584106,-0.005115509,-0.059509277,-0.012123108,-0.017089844,-0.0446167,-0.03289795,-0.014503479,-0.029541016,0.0070495605,-0.066711426,-0.022537231,-0.010757446,0.0072364807,0.009880066,0.004627228,-0.036010742,0.013122559,-0.021942139,0.014755249,0.0046157837,-0.027297974,-0.0019512177,0.010345459,0.041381836,0.046722412,0.026245117,0.049194336,-0.007286072,-0.017364502,-0.025390625,0.028717041,-0.0039367676,-0.017807007,0.019500732,0.029037476,-0.02822876,0.022720337,-0.016616821,-0.004497528,-0.04586792,0.03744507,0.040496826,-0.021850586,0.033691406,-0.03137207,-0.0050582886,0.012489319,-0.031280518,-0.018173218,0.020553589,0.015449524,0.04537964,-0.03010559,-0.033843994,-0.0045928955,-0.007286072,-0.026153564,-0.043518066,-0.041809082,0.028259277,-0.02168274,0.03744507,0.030151367,-0.08911133,-0.020523071,-0.04284668,0.013267517,-0.04147339,-0.0045928955,-0.015075684,0.02456665,-0.009559631,0.000644207,-0.030471802,-0.009155273,0.011329651,0.024887085,-0.018493652,0.042022705,-0.0154800415,0.019546509,0.012939453,0.011604309,0.035247803,0.025527954,0.0058555603,-0.06982422,-0.07672119,-0.012367249,-0.007019043,-0.027740479,-0.049316406,0.0012598038,-0.0005607605,-0.07348633,-0.017288208,-0.013313293,-0.0030879974,-0.05178833,-0.005168915,-0.009147644,0.0078048706,-0.013938904,-0.06964111,-0.0124435425,-0.01586914,0.07647705,0.019592285,0.03201294,0.036376953,-0.017028809,0.035095215,0.009147644,-0.043029785,-0.04333496,0.02720642,-0.024368286,0.014862061,0.008644104,0.000048577785,-0.029159546,0.032440186,0.07086182,0.034362793,-0.015235901,-0.009918213,-0.05432129,-0.030471802,-0.022781372,-0.005214691,0.0007429123,-0.007843018,0.041107178,-0.028182983,-0.030792236,-0.0029087067,0.0021343231,0.023422241,0.055664062,0.0127334595,-0.016921997,0.008148193,0.0034275055,-0.03555298,0.0335083,0.0385437,0.028793335,-0.023117065,-0.02796936,0.0131073,0.033935547,-0.024032593,0.002401352,-0.009750366,0.021072388,-0.0073432922,0.010498047,0.0206604,-0.016677856,-0.021636963,-0.015007019,-0.005218506,0.025756836,0.018875122,-0.035308838,-0.040252686,-0.07824707,0.03427124,0.03439331,0.050750732,-0.0057792664,-0.012283325,-0.024627686,-0.02494812,-0.068237305,0.057861328,0.084472656,-0.008590698,-0.012565613,0.024032593,-0.012229919,-0.046020508,-0.0069847107,-0.0066452026,-0.022033691,-0.018081665,0.013870239,-0.041870117,0.004749298,0.011413574,0.02796936,0.07513428,-0.013122559,-0.044708252,-0.04006958,0.013687134,0.00034880638,-0.010566711,0.016235352,-0.012680054,0.010131836,0.019073486,-0.00053310394,0.030426025,0.0026073456,0.03012085,-0.02406311,-0.0076446533,-0.017364502,-0.017303467,0.016494751,-0.008224487,-0.05987549,0.014076233,-0.029724121,0.057891846,-0.047668457,0.033691406,0.0011758804,0.014060974,0.05682373,0.009674072,-0.024505615,0.012054443,0.016693115,0.025787354,0.04446411,-0.0031700134,-0.031188965,-0.005130768,0.07366943,-0.011459351,-0.0110321045,0.00058221817,0.007965088,0.03237915,0.0041618347,-0.07348633,-0.04260254,-0.01008606,-0.019714355,0.026168823,-0.030654907,0.031982422,-0.026031494,-0.006450653,-0.026809692,-0.0019702911,-0.024261475,0.020568848,-0.028015137,-0.0042686462,-0.01335144,-0.008728027,0.013389587,0.020965576,-0.0104599,0.017318726,0.056518555,0.015655518,-0.034729004,-0.026046753,-0.018310547,-0.016189575,0.010597229,0.026855469,0.012031555,0.03717041,0.046020508,-0.0463562,0.029510498,0.02986145,0.0013380051,0.022216797,-0.010681152,0.017410278,-0.061431885,-0.04046631,-0.025970459,-0.041503906,0.030227661,-0.019561768,0.011619568,0.048828125,0.003578186,-0.035003662,-0.03652954,0.022247314,-0.055603027,0.0025520325,0.029083252,-0.0023117065,-0.037750244,-0.007896423,0.0059127808,0.0029945374,0.057159424,0.008895874,-0.008140564,0.06762695,0.026992798,-0.0012788773,0.022476196,0.0038223267,0.017623901,-0.0002567768,-0.034576416,-0.026138306,-0.004611969,0.020629883,0.0041007996,-0.026519775,-0.0657959,0.042785645,0.029373169,0.053955078,0.0259552,0.008178711,0.03640747,0.009429932,0.015777588,-0.029266357,-0.012382507,-0.02809143,-0.040740967,0.02407837,-0.02670288,-0.00762558,-0.033203125,0.030654907,-0.0046424866,0.02067566,-0.033691406,0.038208008,0.014846802,0.018676758,0.010391235,0.0041542053,0.061706543,0.061309814,-0.050323486,0.03050232,0.01826477,-0.031341553,0.006778717,0.055267334,-0.006706238,-0.022598267,-0.05593872,-0.018600464,0.028900146,0.009819031,-0.07281494,0.0020160675,0.017852783,0.018188477,0.017684937,-0.0048675537,-0.051361084,0.0027713776,-0.04663086,-0.064453125,-0.008033752,-0.030654907,0.019744873,0.042297363,-0.051757812,-0.0011234283,0.014038086,-0.0009422302,-0.0045051575,-0.0020179749,0.016693115,0.001531601,-0.055664062,0.02406311,0.01600647,0.020004272,0.02279663,0.042663574,0.013114929,0.0068511963,0.052947998,-0.0051574707,-0.014381409,-0.05130005,0.0132751465,-0.023391724,0.014839172,0.021728516,-0.024719238,-0.00554657,-0.01977539,-0.030639648,-0.040893555,-0.014419556,-0.023132324,0.0031280518,0.013420105,-0.029220581,-0.006324768,-0.04888916,-0.013221741,-0.0038032532,0.079956055,0.01751709,-0.017669678,-0.080322266,-0.013183594,0.039398193,0.022979736,0.003572464,-0.015464783,-0.013023376,-0.006965637,-0.034851074,-0.003238678,-0.020721436,0.00642395,0.0075569153,-0.031433105,0.034851074,0.00831604,0.027359009,-0.0021305084,0.013587952,0.028869629,-0.01727295,-0.0008044243,-0.04055786,0.018600464,0.0057411194,-0.024536133,-0.0657959,0.041931152,-0.0021877289,0.044525146,-0.023147583,-0.0052375793,-0.01109314,0.0032958984,0.02319336,-0.0046310425,-0.016525269,-0.0013380051,-0.056030273,-0.06695557,0.014984131,-0.01574707,0.025741577,-0.006969452,0.011077881,0.018432617,0.00063610077,0.00617218,0.023162842,-0.009567261,0.00074243546,-0.018127441,-0.041381836,-0.009628296,-0.008056641,-0.009231567,0.008094788,-0.0038318634,0.005268097,0.008491516,-0.012016296,0.02999878,-0.0019464493,0.0042381287,0.0284729,0.0056381226,0.01701355,0.04284668,0.006881714,-0.038909912,0.020965576,0.016433716,0.0060577393,-0.028015137,0.03010559,0.030654907,-0.009521484,0.013061523,-0.00440979,-0.014305115,-0.012626648,-0.0007081032,0.007091522,0.042144775,0.006828308,-0.047088623,0.026016235,0.015449524,-0.025909424,-0.008728027,0.013412476,0.018447876,-0.018356323,0.029144287,0.03100586,0.05505371,-0.023773193,0.0049934387,0.012878418,0.021316528,0.018554688,0.03164673,-0.007850647,0.007083893,-0.004585266,0.021728516,-0.0037651062,-0.010597229,0.0055885315,-0.005252838,0.025024414,0.020599365,0.009902954,-0.01626587,-0.015319824,0.0047302246,-0.009239197,-0.008399963,0.015586853,0.022628784,0.016921997,-0.019866943,0.027938843,0.010444641,-0.024871826,-0.021011353,0.010002136,0.025939941,-0.023880005,-0.018859863,0.010978699,0.0036392212,0.048583984,-0.06286621,0.008338928,0.0015182495,-0.0034828186,-0.022705078,-0.03237915,-0.03665161,0.027252197,0.03451538,-0.008239746,0.019882202,0.036743164,0.011795044,0.0042152405,0.01966858,0.017990112,-0.009124756,-0.009506226,-0.04284668,-0.004108429,-0.009101868,0.0129776,-0.030639648,0.0039711,-0.011985779,-0.03390503,0.03086853,-0.0070114136,0.0011196136,0.0017080307,0.01725769,0.026885986,-0.0044288635,0.0066375732,-0.0042381287,-0.02645874,-0.0072784424,-0.0069847107,0.019256592,-0.03414917,0.010360718,-0.03152466,-0.0019512177,-0.0066871643,0.0031261444,0.026504517,0.030334473,0.00687027,0.010826111,-0.03793335,0.045166016,-0.03491211,0.014732361,0.0049743652,-0.031982422,-0.0028018951,-0.023132324,-0.02053833,0.02822876,-0.009384155,0.005584717,-0.021957397,-0.022445679,-0.010910034,-0.05609131,0.016296387,0.033294678,0.038391113,-0.016189575,0.008354187,-0.0061569214,0.006668091,-0.022338867,0.013404846,-0.012687683,0.0001128912,0.022994995,0.01927185,-0.018188477,-0.019515991,-0.029647827,-0.003107071,-0.05960083,-0.050964355,-0.030227661,0.024780273,0.00055742264,-0.000020086765,-0.0154800415,-0.022628784,0.00061273575,-0.045806885,0.011619568,0.004009247,0.035003662,0.010383606,-0.009635925,-0.012382507,0.006958008,-0.0012674332,0.02633667,0.0018482208,-0.0016260147,-0.017837524,-0.0012712479,0.03643799,0.013061523,0.022750854,0.005504608,0.0010404587,-0.02079773,-0.04647827,0.0061302185,-0.0059280396,-0.0039405823,-0.003030777,0.013755798,-0.03463745,-0.0048980713,-0.012207031,-0.014099121,0.019210815,0.014930725,0.03250122,-0.013328552,-0.00894165,-0.011238098,-0.024978638,-0.037353516,0.023666382,0.011138916,0.016967773,0.009017944,0.04598999,-0.0066375732,-0.005268097,-0.010986328,0.0011148453,0.037963867,-0.021118164,0.0068206787,-0.000364542,0.0053863525,-0.027526855,-0.005203247,-0.03781128,0.0038585663,0.0803833,0.01309967,-0.0065345764,-0.01222229,-0.008712769,0.025253296,0.01890564,-0.038909912,-0.002105713,-0.048217773,0.019500732,-0.015220642,0.015838623,0.017944336,0.020080566,-0.024734497,-0.06616211,-0.015586853,0.00092220306,-0.029510498,-0.047088623,-0.005580902,-0.062805176,-0.017211914,-0.010696411,-0.019592285,-0.005630493,0.018188477,-0.015556335,-0.08972168,0.019714355,0.04864502,0.01209259,0.025543213,-0.021224976,0.02670288,0.018096924,-0.0256958,-0.0070762634,0.047698975,-0.02470398,-0.022994995,-0.015533447,0.027511597,-0.01902771,-0.020431519,0.008483887,0.0049934387,0.011695862,0.0057411194,-0.0044670105,-0.018112183,0.03149414,-0.002292633,0.015022278,-0.0042686462,-0.026779175,0.03010559,-0.056365967,0.01222229,0.017791748,-0.009666443,0.0042686462,0.039245605,0.03668213,-0.038085938,-0.007598877,0.026016235,-0.004146576,0.05328369,-0.02607727,0.04534912,0.020187378,-0.012794495,0.017196655,-0.0025234222,-0.017150879,-0.049957275,-0.02999878,0.03793335,-0.0022087097,0.009262085,-0.011932373,0.0025978088,0.0029945374,-0.019943237,0.02267456,-0.013504028,-0.0129470825,-0.003074646,-0.011230469,0.0071258545,0.0054969788,-0.0026378632,0.03289795,0.00092077255,0.030044556,0.009742737,-0.008216858,0.016448975,0.021652222,-0.0062217712,0.007297516,0.021240234,0.0004594326,0.018157959,0.016784668,-0.0062713623,-0.0390625,0.006259918,-0.010421753,0.015129089,-0.00068855286,-0.014328003,-0.011756897,-0.008384705,0.0018310547,0.005077362,-0.022964478,0.020812988,-0.01260376,-0.02128601,-0.010948181,-0.017166138,0.013008118,0.0052452087,0.00026202202,0.030853271,0.013000488,0.060638428,0.0074653625,0.013641357,0.030899048,0.02368164,0.020339966,-0.028198242,-0.0021152496,-0.0014781952,0.014541626,0.0058631897,-0.03225708,0.017074585,0.042144775,-0.0063095093,0.03262329,-0.009933472,0.018585205,-0.0022258759,0.017440796,-0.014503479,0.008705139,-0.011634827,0.03717041,-0.031585693,0.011810303,0.021469116,-0.01448822,-0.003622055,-0.016464233,-0.025222778,0.023117065,0.007949829,-0.004753113,0.03881836,-0.0008006096,0.022979736,-0.033355713,-0.019882202,-0.0059013367,-0.04083252,-0.022857666,0.03414917,0.007297516,0.0038261414,0.014518738,-0.023086548,0.030654907,-0.027374268,0.03479004,0.00017917156,0.0012950897,-0.02796936,-0.019104004,-0.029464722,-0.015716553,-0.024429321,0.016281128,0.0037231445,0.034210205,0.022735596,0.02281189,0.051452637,0.004627228,-0.006263733,-0.021896362,-0.025497437,-0.007091522,-0.027420044,-0.018859863,-0.0038585663,0.023727417,0.0491333,-0.0034885406,0.027236938,0.042053223,0.02558899,0.009277344,0.019882202,-0.01209259,-0.0015029907,0.0006661415,0.036315918,0.018081665,0.030426025,-0.0113220215,0.021133423,0.010314941,0.033233643,-0.018310547,0.023651123,0.06915283,0.016540527,-0.0068626404,0.048858643,0.0050086975,-0.019363403,-0.026107788,-0.021636963,0.064819336,0.03942871,0.04724121,0.04827881,0.017974854,-0.015022278,0.015686035,-0.03567505,-0.018447876,0.07696533,0.0026454926,-0.028335571,-0.02986145,-0.015731812,0.0067749023,-0.042175293,-0.023712158,0.009628296,-0.018814087,0.0129470825,-0.00059604645,-0.016815186,-0.0021915436,0.013130188,0.015960693,0.025146484,-0.020629883,0.015007019,0.02267456,0.016860962,0.01663208,0.002904892,0.02935791,-0.047088623,-0.027511597,0.0031528473,0.028289795,-0.0066719055,0.009803772,0.03717041,0.009902954,0.046081543,0.045532227,-0.008987427,0.011810303,0.034423828,0.0017004013,-0.014465332,0.050079346,0.042785645,0.01600647,0.029403687,0.030181885,0.030014038,-0.05215454,0.018692017,0.00046110153,0.010688782,0.0032291412,-0.026885986,0.001531601,0.0029716492,0.02947998,-0.010566711,-0.010025024,0.0181427,0.034088135,-0.0059661865,0.003036499,-0.0034255981,0.001619339,-0.0033817291,0.0023326874,0.0012903214,-0.018508911,0.025131226,0.017837524,0.03012085,-0.03427124,0.021255493,-0.011764526,-0.021911621,-0.016586304,0.017410278,-0.03781128,0.020202637,-0.010185242,0.0013971329,-0.03010559,0.014259338,0.011741638,0.00699234,0.0231781,0.0143966675,0.0019464493,0.011184692,0.017837524,0.018325806,0.0038719177,-0.007671356,-0.01260376,0.030899048,0.046783447,0.0057678223,0.030975342,-0.011352539,-0.0040130615,0.015686035,-0.006702423,-0.009239197,-0.006126404,-0.021560669,-0.019348145,0.015823364,0.046875,0.01626587,0.04034424,-0.0035858154,-0.019729614,0.006614685,0.02571106,0.011123657,-0.010894775,0.0023937225,0.01663208,-0.0054016113,0.04119873,0.033996582,0.006965637,0.027862549,-0.0033340454,-0.01247406,0.0030269623,-0.02017212,0.021011353,-0.025619507,0.004306793,-0.019805908,0.015960693,-0.022705078,-0.030426025,0.016921997,-0.012809753,-0.018478394,-0.03277588,0.0010929108,0.008964539,0.024215698,0.040374756,0.013221741,-0.037841797,0.06903076,-0.007572174,0.058532715,-0.002565384,0.010437012,0.029586792,0.04324341,0.03060913,0.026916504,0.027618408,-0.030761719,0.016784668,0.039489746,0.027053833,0.0064353943,0.0012617111,-0.020584106,0.050689697,0.0075645447,0.035247803,-0.028625488,-0.0007724762,0.007896423,0.002117157,0.004802704,-0.0029144287,-0.002576828,0.017547607,0.035461426,-0.0395813,-0.020568848,-0.034454346,-0.00548172,0.025512695,-0.011024475,0.007045746,0.01374054,-0.015731812,0.017288208,-0.035339355,-0.018051147,0.008972168,0.023361206,-0.023849487,-0.03491211,-0.0014276505,0.013916016,-0.011634827,0.027252197,0.013061523,-0.009109497,0.011070251,0.04373169,-0.011291504,0.03390503,-0.0016298294,0.019332886,0.028839111,-0.015686035,-0.020523071,0.004219055,0.018585205,-0.008560181,0.01612854,0.03414917,-0.00566864,0.0048828125,-0.0071525574,-0.033691406,0.0047416687,0.0022335052,-0.010681152,-0.010093689,-0.00033521652,-0.01222229,0.0038166046,0.0110321045,0.01020813,-0.00013637543,-0.025054932,-0.0066108704,0.004463196,0.025375366,0.02468872,-0.040283203,0.010475159,0.0073127747,-0.0014762878,-0.020202637,-0.013397217,0.0013084412,-0.027694702,0.034606934,0.004940033,0.011795044,0.005393982,-0.025131226,0.00166893,0.033081055,0.015464783,0.029296875,0.0074310303,-0.007881165,0.0096206665,-0.02128601,-0.010185242,0.004711151,0.0071907043,-0.007358551,0.006801605,-0.011657715,-0.022506714,0.039123535,0.00045657158,0.012741089,0.0015459061,-0.014305115,0.019012451,-0.01739502,-0.017822266,0.006904602,0.008743286,-0.0011949539,-0.018753052,-0.021194458,0.02507019,0.04751587,0.0042686462,0.0033340454,0.03164673,0.0042648315,0.026519775,0.035247803,0.021469116,0.04598999,0.024887085,-0.022277832,0.0037288666,0.024429321,-0.007129669,-0.031219482,0.01184082,-0.0014724731,-0.020980835,0.014305115,0.0146865845,-0.015357971,-0.028152466,-0.023132324,-0.0018014908,-0.020065308,0.0036964417,-0.017181396,0.0069770813,-0.028717041,-0.019577026,-0.010192871,-0.0090789795,-0.051086426,-0.027374268,-0.006187439,-0.017181396,-0.04171753,0.0007596016,-0.029647827,0.009544373,-0.010543823,-0.016067505,-0.004436493,0.03189087,-0.02041626,-0.0015640259,-0.0019083023,0.025665283,0.012214661,0.014633179,0.023452759,-0.022583008,-0.026016235,-0.009063721,-0.018997192,-0.02180481,0.036956787,0.0027160645,0.03652954,0.007358551,-0.0029964447,0.002216339,-0.01727295,0.0046195984,0.010238647,-0.028442383,-0.017074585,0.0178833,0.014839172,-0.013389587,-0.0036125183,0.0440979,-0.02861023,-0.020965576,0.018737793,0.04660034,0.014022827,0.036712646,-0.022140503,0.0006518364,-0.012145996,-0.001832962,-0.015357971,0.0044021606,-0.0059509277,0.005832672,-0.0041236877,0.0058059692,0.021392822,-0.010681152,-0.022338867,0.028152466,-0.0038394928,-0.030578613,0.029144287,0.013038635,0.00995636,-0.0012521744,-0.01096344,0.018692017,0.036499023,0.011947632,0.012107849,-0.00894928,0.013656616,-0.014556885,0.018447876,0.011260986,-0.0028133392,-0.02796936,-0.020401001,-0.025482178,0.018508911,-0.004283905,0.026611328,-0.0030784607,0.019470215,-0.0178833,-0.028335571,-0.015289307,0.013153076,0.0022716522,0.0020217896,-0.017837524,-0.0033836365,0.026306152,-0.022827148,0.010604858,-0.034057617,-0.030334473,-0.0056877136,-0.017547607,0.0362854,0.007232666,-0.011985779,0.0045051575,0.0063819885,-0.000002503395,-0.008262634,0.04348755,-0.018997192,0.0044174194,0.015686035,0.017211914,-0.02911377,0.017211914,0.0017948151,-0.011932373,0.02406311,-0.0065956116,0.014915466,-0.002565384,0.043304443,0.006427765,0.004638672,0.037322998,0.0012197495,0.0032730103,-0.011779785,-0.0036563873,-0.0022830963,-0.0072631836,0.03186035,-0.021026611,-0.007797241,0.012207031,-0.012771606,-0.027633667,0.0067329407,0.0181427,0.059509277,-0.023971558,0.04232788,-0.019317627,-0.018508911,-0.009155273,0.008392334,-0.020965576,0.000916481,0.032348633,0.01600647,-0.007751465,-0.005493164,-0.023086548,-0.019760132,-0.0076446533,0.020812988,0.003358841,-0.017242432,0.0058898926,0.0076522827,0.03933716,0.009407043,0.012321472,0.021972656,-0.002462387,0.024139404,0.0017356873,0.03692627,-0.013252258,-0.029052734,0.016326904,-0.009353638,-0.014541626,-0.013031006,-0.007499695,0.0138168335,-0.03479004,0.017944336,-0.0062713623,0.04864502,-0.02659607,0.012306213,-0.027938843,0.006801605,-0.02619934,0.00084877014,-0.02583313,0.019317627,0.036010742,-0.008285522,0.006996155,0.0098724365,-0.013305664,0.017181396,0.05456543,-0.014152527,-0.027328491,-0.007858276,0.015655518,0.008010864,0.009986877,0.011688232,-0.026901245,-0.022247314,0.0024738312,-0.014312744,-0.0050735474,-0.0027942657,-0.0043945312,0.018051147,0.008163452,-0.002380371,0.040100098,-0.005947113,0.0025157928,-0.009727478,0.010612488,0.028762817,0.033203125,-0.020584106,0.028625488,0.01146698,-0.020584106,0.04660034,-0.014930725,0.016113281,-0.02557373,0.00017380714,-0.022918701,-0.017974854,-0.0045928955,0.0021438599],"createdAt":"2026-04-18T18:54:16.820Z","updatedAt":"2026-04-23T02:01:30.368Z","lastSeenAt":"2026-04-23T02:01:30.368Z","tsv":"'/api':173 '/api/v1/stripe/charges/3':114 '/docs':171 '/pricing':172 '/readme':175 '/request':17,34 '/stripe/charges/3':215 '0.02':16,33,96,141 '0x8335':133 '20000':127 '2913':134 '6':137 'Base network API' 'USDC micropayment API' 'accept':159 'access':7,24,42,119,209 'actual':203 'ai':66 'analysi':70 'analyt':65 'api':6,23,41,62,101,118,208,225 'application/json':165 'avail':201 'awar':230 'base':11,28,49,128,136 'base-network' 'behavior':235 'behind':43,205 'beyond':239 'broad':55 'call':4,21 'catalog':56 'categori':226 'challeng':123 'classif':72 'commit':109 'connect':181 'content':187 'contract':132 'convers':89 'crypto-paid API' 'data':64 'decim':138 'differ':220 'document':166,196,238 'embed':73 'endpoint':36,92,113,158,233 'equal':140 'estim':83 'exact':148 'exampl':200 'exchang':78 'extrem':168 'feed':77 'financ':74 'function':204 'gas':82 'generat':90 'geocod':87 'header':156 'http':160 'http-post' 'includ':151 'infrastructur':85 'json-response' 'key':102 'label':116,210 'learn':68 'limit':105 'list':224 'lowpaymentfee' 'lowpaymentfee.com':38 'machin':67 'made':144 'maxamountrequir':125 'may':219 'minimum':108 'network':50 'no-api-key' 'openapi':191 'oper':53 'page':176 'particular':213 'pay':2,19,59 'pay-per-cal':1,18 'pay-per-call API' 'pay-per-request':58 'payment':142,155 'paywal':46 'per':3,20,60,97 'post':161 'premium':5,22,40,117,207 'premium API access' 'price':76,94 'prompt':183 'provid':39,52 'quot':81 'rate':79,104 'render':178 'request':61,98,162 'request/response':194 'requir':110 'return':164 'rout':214 'schema':195 'scheme':149 'sentiment':69 'settl':12,29 'span':63 'spars':169 'spec':192 'specif':112 'summar':71 'titl':241 'token':80 'unclear':217 'unit':129 'usag':199 'usdc':14,31,131 'usdc-settlement' 'user':227 'util':86 'valid':88 'via':8,25,145 'wallet':182 'web3':75 'x':154 'x-payment':153 'x402':9,26,45,122,147 'x402 API' 'x402-payment'","prices":[{"id":"6dcf5fa4-f5fa-49a8-8451-06ad19a3c91b","listingId":"9737cbf5-c263-4365-a904-829a924984c7","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/stripe/charges/3","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:54:16.820Z"}],"sources":[{"listingId":"9737cbf5-c263-4365-a904-829a924984c7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/3","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:16.820Z","lastSeenAt":"2026-04-23T02:01:30.368Z"}],"details":{"listingId":"9737cbf5-c263-4365-a904-829a924984c7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/3 \\\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 valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/3"},{"claim":"All APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The provider offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to paid API endpoints without traditional API key registration","Agent-driven workflows that need to pay per call using USDC on Base","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","AI agents that can autonomously pay for API calls via crypto","Users who want no-signup, no-rate-limit API access"],"notFor":["Users needing well-documented API contracts with full request/response schemas","Production workloads requiring SLA guarantees or support","Users without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:55.997Z"},"updatedAt":"2026-04-23T02:01:30.368Z"}}