{"id":"24c6e1ec-66a7-48e0-9e2b-aeacd75b94e3","shortId":"evTptC","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The site hosts a broad catalog of pay-per-request APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). Each endpoint costs $0.02 per request, settled in USDC on the Base network with no API keys, no rate limits, and no commitments required.\n\nThe specific resource probed (/api/v1/generate/resource/53) is listed as \"Premium API Access\" and returns a valid x402 challenge with maxAmountRequired of 20,000 base units of USDC (0.02 USDC = $0.02) on Base. Payment is made via the x402 exact scheme to the specified payTo address. The endpoint accepts HTTP POST 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 examples of what this particular resource actually returns. The endpoint is live and responds correctly with a 402 challenge, but without documentation it is unclear what data or functionality \"Premium API Access\" on resource/53 specifically provides.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","http-post","json-response"],"categories":["api","infrastructure"],"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 all render only 'Connect wallet'","No OpenAPI or schema describing request parameters or response format for this specific resource","It is unclear what 'Premium API Access' on resource/53 actually returns — the name is generic","The site lists many endpoints but none have documented input/output schemas"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/53","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/generate/resource/53","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 documentation is effectively nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and no description of what resource/53 actually returns. The listing is essentially a stub with confirmed liveness and pricing.","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":"2026-04-18T23:33:37.580Z","embedding":[-0.026611328,-0.027542114,0.047058105,0.0178833,0.0154418945,-0.02986145,-0.018249512,0.034454346,0.0692749,-0.078186035,0.03225708,-0.054626465,-0.0234375,-0.045928955,-0.030258179,0.013496399,-0.011169434,-0.002161026,-0.040283203,0.025146484,0.041412354,-0.01878357,-0.02822876,0.04107666,-0.000998497,-0.020370483,-0.01977539,-0.0036525726,-0.008232117,-0.033325195,0.03314209,-0.026504517,-0.0022697449,0.0131073,-0.020050049,-0.02571106,0.002040863,0.04159546,0.027954102,-0.0059661865,-0.0012865067,-0.06329346,0.005744934,-0.003648758,-0.047332764,-0.0010232925,0.0039100647,-0.021621704,-0.004699707,-0.0010643005,-0.037841797,-0.003326416,-0.0018663406,-0.006942749,-0.00073957443,0.0001052618,-0.018127441,-0.011184692,-0.005935669,0.016448975,0.004524231,-0.056762695,-0.020828247,-0.005432129,0.0071144104,0.04977417,-0.007827759,0.049591064,0.011520386,0.052490234,0.044067383,0.058380127,0.026687622,0.018341064,0.009117126,-0.0019721985,0.006729126,0.064819336,-0.016204834,-0.014877319,-0.015075684,0.0023021698,-0.060668945,-0.0016841888,-0.025863647,-0.04360962,-0.01574707,0.011566162,-0.021194458,0.023132324,-0.06713867,0.002008438,-0.006439209,0.012672424,-0.0061836243,0.0015830994,-0.017501831,0.038513184,-0.016845703,0.026412964,0.004085541,-0.038513184,0.015853882,0.010116577,0.0446167,0.047027588,0.024337769,0.02822876,0.00072431564,-0.020645142,-0.020187378,0.013267517,0.0032463074,-0.00774765,0.0052375793,0.012466431,-0.021057129,0.0076675415,-0.01802063,0.020370483,-0.051361084,0.050628662,0.016494751,-0.0128479,0.014343262,-0.044158936,-0.007850647,0.019378662,-0.028244019,-0.000028371811,0.02709961,0.017196655,0.03466797,-0.021820068,-0.039642334,0.008514404,-0.022781372,-0.033843994,-0.0446167,-0.033416748,0.028137207,-0.036315918,0.022628784,0.034576416,-0.09698486,-0.02809143,-0.048034668,0.0065727234,-0.02949524,0.00014638901,-0.011375427,0.024841309,-0.01852417,-0.0054740906,-0.023223877,-0.026107788,-0.0005555153,0.033721924,-0.032958984,0.04562378,0.00548172,0.033691406,0.0054397583,0.01096344,0.034606934,0.030960083,0.0068588257,-0.07110596,-0.08148193,-0.019454956,0.008811951,-0.016937256,-0.040374756,0.010818481,0.0026931763,-0.076049805,-0.022094727,-0.0049819946,-0.009300232,-0.047576904,-0.007068634,-0.023605347,0.0077209473,0.0026073456,-0.0692749,-0.031341553,-0.019638062,0.061828613,0.034484863,0.005241394,0.044830322,-0.017028809,0.059692383,0.01259613,-0.032958984,-0.042266846,0.020401001,-0.021072388,0.017303467,0.0056495667,0.00041127205,-0.032196045,0.030288696,0.05770874,0.019882202,-0.016326904,-0.0010261536,-0.056030273,-0.03427124,-0.029678345,0.006904602,0.005809784,0.014205933,0.041015625,-0.022232056,-0.036895752,0.01158905,0.017211914,0.009498596,0.06341553,0.0015497208,-0.0063667297,0.014541626,0.009231567,-0.032226562,0.046966553,0.028564453,0.020736694,-0.029006958,-0.02986145,0.017684937,0.03729248,-0.02355957,0.0064201355,-0.013771057,0.027954102,0.007205963,0.022888184,0.02835083,-0.027328491,-0.017852783,-0.033721924,-0.01197052,0.0368042,0.017608643,-0.023086548,-0.043304443,-0.07751465,0.05279541,0.04296875,0.04321289,-0.014160156,0.011604309,-0.019851685,-0.016204834,-0.066589355,0.051208496,0.074279785,-0.024795532,-0.01474762,0.009819031,-0.009887695,-0.039215088,-0.0020160675,-0.015144348,-0.021270752,-0.023162842,0.008255005,-0.049041748,-0.0034751892,0.013839722,0.02658081,0.053009033,-0.01386261,-0.06530762,-0.0362854,0.013496399,0.006252289,-0.031433105,0.0016794205,-0.010925293,0.01966858,0.034362793,0.0023612976,0.023239136,-0.001531601,0.016571045,-0.00932312,-0.009155273,-0.028457642,-0.008872986,0.011856079,0.0034160614,-0.06945801,0.00819397,0.00042009354,0.06829834,-0.05090332,0.03363037,-0.0037631989,0.00032377243,0.062042236,0.004005432,-0.05734253,0.0064697266,0.022491455,0.02973938,0.046905518,0.009460449,-0.03277588,-0.016296387,0.07098389,-0.022506714,-0.01586914,0.015586853,0.016235352,0.043029785,-0.0016508102,-0.07092285,-0.035705566,-0.0048980713,-0.030303955,0.019882202,-0.028457642,0.018707275,-0.01638794,-0.004047394,-0.024002075,0.007709503,-0.029129028,0.012817383,-0.01675415,0.004436493,-0.015655518,-0.0073051453,0.013656616,0.017501831,-0.0103302,0.014839172,0.043151855,0.008110046,-0.0035209656,-0.031433105,-0.027679443,-0.019302368,-0.00365448,0.02267456,0.03756714,0.018707275,0.05343628,-0.038909912,0.029220581,0.035949707,0.027877808,0.034179688,0.001490593,0.014907837,-0.06726074,-0.05758667,-0.029037476,-0.042785645,0.04055786,0.010368347,-0.0073165894,0.054473877,0.007583618,-0.009239197,-0.029037476,0.023239136,-0.047210693,-0.027282715,0.050720215,-0.013343811,-0.034484863,0.0005750656,-0.001742363,0.0082473755,0.03451538,0.015945435,0.014160156,0.07537842,0.047973633,-0.009056091,0.019592285,0.0112838745,0.0070877075,0.007499695,-0.037475586,-0.029678345,-0.01537323,0.022750854,-0.021713257,-0.01878357,-0.06744385,0.05609131,0.038391113,0.07354736,0.014251709,0.01084137,0.027618408,-0.0061683655,0.012161255,-0.014595032,-0.011116028,-0.022827148,-0.052856445,0.029129028,-0.0056419373,-0.010360718,-0.020065308,0.032409668,-0.005962372,0.026763916,-0.026641846,0.04827881,0.007621765,-0.0035152435,0.024093628,0.0070114136,0.05178833,0.042175293,-0.03286743,0.034210205,0.023269653,-0.03475952,-0.0061073303,0.042633057,-0.0058021545,-0.0062217712,-0.048858643,-0.024902344,-0.0018634796,0.0040283203,-0.047607422,-0.011291504,0.0065460205,0.015014648,0.033050537,-0.012939453,-0.028060913,0.014724731,-0.017074585,-0.0597229,-0.013977051,-0.033325195,0.014213562,0.057006836,-0.03466797,-0.0024757385,0.0046844482,-0.0079956055,0.0066947937,0.022201538,0.010368347,-0.0016965866,-0.045928955,0.016845703,0.013793945,0.008132935,0.015731812,0.03817749,0.01373291,0.012687683,0.050231934,0.0015773773,-0.031555176,-0.06524658,0.01134491,-0.04724121,-0.008102417,0.010658264,-0.014556885,-0.014228821,-0.020263672,-0.021850586,-0.028869629,0.0021800995,-0.030883789,0.003932953,0.029846191,-0.021377563,-0.024871826,-0.04083252,-0.01348114,-0.01360321,0.07977295,0.031021118,0.001420021,-0.061340332,-0.014801025,0.016616821,0.0067825317,0.009941101,-0.014701843,0.0010528564,-0.006652832,-0.03161621,-0.018966675,-0.022125244,0.015731812,-0.009353638,-0.013786316,0.02960205,-0.004989624,0.02255249,-0.014381409,0.013877869,0.04043579,-0.014801025,-0.0013437271,-0.027282715,0.031066895,0.0012130737,-0.0077285767,-0.05508423,0.04360962,0.0068588257,0.029190063,-0.032073975,0.007598877,-0.0049819946,0.006286621,0.008560181,0.0014829636,-0.0154953,-0.010765076,-0.05480957,-0.06604004,0.044952393,-0.026809692,0.030441284,0.014892578,0.00541687,0.013343811,0.00053596497,-0.0077781677,0.029891968,-0.023223877,-0.014282227,-0.03845215,-0.037231445,-0.0022640228,-0.013717651,-0.018295288,0.0184021,-0.020904541,0.0107803345,-0.006046295,-0.021453857,0.024536133,-0.0016756058,-0.010520935,0.018478394,0.00041031837,0.011581421,0.043182373,0.008033752,-0.041809082,0.022872925,0.0021514893,0.009231567,-0.013771057,0.045074463,0.032409668,-0.0060424805,-0.002714157,-0.019210815,-0.016830444,-0.014762878,-0.0028381348,0.0067214966,0.027435303,0.0049324036,-0.033569336,0.023773193,0.0004117489,-0.021743774,-0.020950317,0.012969971,0.021697998,-0.029663086,0.022613525,0.024368286,0.06329346,-0.022827148,0.0005135536,0.016571045,0.019638062,0.03010559,0.017700195,-0.020401001,0.010917664,-0.011482239,0.015701294,0.00091695786,-0.013809204,0.013793945,0.0031223297,0.016281128,0.024795532,0.016311646,-0.019241333,-0.03225708,0.009140015,-0.013496399,-0.010650635,0.01802063,0.032440186,0.011856079,-0.024765015,0.008506775,0.024108887,-0.028945923,-0.022918701,-0.007843018,0.04525757,-0.007835388,-0.0063705444,0.013381958,0.012214661,0.042541504,-0.06036377,-0.0107803345,0.013748169,0.011932373,-0.023452759,-0.043670654,-0.04144287,0.0038375854,0.039611816,0.0025787354,0.015457153,0.027832031,0.0020599365,-0.0048446655,0.041992188,0.0035514832,-0.017196655,-0.018661499,-0.038726807,-0.0010938644,-0.0011091232,-0.000033676624,-0.027801514,0.006011963,-0.013748169,-0.038269043,0.011024475,-0.004085541,-0.0007801056,-0.010810852,0.021713257,0.029785156,-0.0115356445,0.016052246,-0.014289856,-0.024017334,0.00068569183,0.002407074,0.015426636,-0.059143066,0.019226074,-0.027069092,-0.0074386597,-0.0005235672,0.020111084,0.024902344,0.025360107,-0.0070228577,0.016998291,-0.04650879,0.027236938,-0.038757324,0.0029678345,0.009223938,-0.036987305,-0.006614685,-0.01838684,-0.027328491,0.036590576,-0.017181396,-0.018218994,-0.033935547,-0.03375244,-0.005973816,-0.05001831,0.022537231,0.04309082,0.031829834,-0.024276733,-0.003282547,-0.003856659,0.00030994415,-0.0146484375,0.010803223,-0.009384155,0.02017212,0.011978149,0.005218506,-0.041809082,-0.020568848,-0.01637268,0.011451721,-0.03640747,-0.043273926,-0.017959595,0.0057525635,-0.0072135925,0.0010156631,-0.024780273,-0.021636963,-0.0029029846,-0.046813965,0.011512756,0.017074585,0.019897461,0.010757446,-0.0146102905,0.010253906,0.016662598,-0.011238098,0.034942627,0.0017738342,-0.017684937,-0.044281006,0.005004883,0.043426514,0.03036499,-0.009033203,-0.010948181,-0.0038318634,-0.018692017,-0.049957275,-0.013587952,0.0011768341,-0.010009766,-0.0044288635,0.012756348,-0.04244995,-0.0040740967,-0.01852417,-0.0005288124,0.019195557,0.021972656,0.019088745,-0.0006761551,0.00076150894,-0.0041275024,-0.00655365,-0.026870728,0.030029297,0.010513306,0.0036964417,0.018737793,0.054260254,0.0038776398,-0.0041389465,-0.0025119781,0.0010433197,0.018569946,-0.018112183,-0.0076942444,-0.012504578,0.0041542053,-0.014930725,-0.017868042,-0.042541504,-0.005153656,0.09307861,-0.0037002563,-0.003282547,-0.016296387,-0.01953125,0.019927979,0.02420044,-0.051513672,0.007106781,-0.034423828,0.021072388,-0.02923584,0.0206604,0.015258789,0.008331299,-0.021072388,-0.068481445,-0.007537842,-0.00289917,-0.0087890625,-0.061706543,-0.026382446,-0.058898926,-0.0047302246,-0.016036987,-0.026870728,-0.0024471283,0.013496399,-0.01979065,-0.08654785,-0.008880615,0.050476074,0.0063476562,0.023590088,-0.022232056,0.022262573,0.021575928,-0.040252686,-0.016723633,0.03314209,-0.029754639,-0.010360718,-0.020645142,0.019546509,-0.013420105,-0.020324707,0.014633179,0.008125305,0.013160706,-0.0053977966,-0.0018482208,-0.013572693,0.018127441,-0.009780884,0.014961243,-0.006011963,-0.019378662,0.023727417,-0.050872803,0.010520935,0.029525757,-0.00050640106,0.009216309,0.02583313,0.03186035,-0.03515625,-0.017364502,0.032836914,0.0105896,0.037353516,-0.029708862,0.047424316,0.011756897,-0.020248413,0.03717041,-0.0035152435,-0.027542114,-0.043060303,-0.028167725,0.020950317,0.0011167526,0.016494751,-0.019195557,-0.002128601,0.014251709,0.004119873,0.010787964,-0.0072784424,-0.035827637,-0.010635376,0.0055770874,0.0025367737,-0.0038013458,-0.0026683807,0.020019531,0.027908325,0.03845215,0.0065231323,-0.0030784607,0.0018262863,0.023498535,-0.0154953,0.010925293,0.0206604,0.0044403076,0.031021118,0.015464783,0.007160187,-0.040100098,-0.018188477,-0.041381836,-0.0103302,0.0039100647,-0.01108551,-0.0143966675,0.0022449493,0.008796692,-0.006717682,-0.020553589,0.012756348,-0.04248047,-0.030395508,-0.009971619,-0.01651001,0.005619049,0.00026464462,0.013328552,0.012817383,0.00036096573,0.040130615,0.008102417,-0.0063476562,0.016326904,0.03253174,0.017700195,-0.0335083,-0.00248909,-0.010810852,0.0025939941,-0.0019187927,-0.023254395,0.015792847,0.03857422,-0.009971619,0.008598328,0.007610321,0.026473999,-0.016342163,0.00957489,-0.0007367134,0.023468018,-0.012016296,0.024414062,-0.04586792,0.008575439,0.018829346,-0.014022827,-0.0012893677,-0.005924225,-0.029815674,0.014320374,0.0049858093,-0.026870728,0.05130005,-0.0031013489,0.02168274,-0.022888184,-0.013839722,0.00010675192,-0.037109375,-0.02355957,0.0418396,-0.0010700226,-0.008293152,0.017318726,-0.030517578,0.04196167,-0.0335083,0.027236938,0.0013360977,-0.0059814453,-0.01701355,-0.018997192,-0.014907837,-0.00023496151,-0.008911133,0.006839752,0.0045547485,0.04736328,0.016937256,0.02848816,0.051208496,0.021453857,-0.0028152466,-0.038116455,-0.022872925,-0.00014829636,-0.016921997,0.009315491,-0.016662598,0.058166504,0.041229248,0.0013380051,0.029754639,0.03387451,0.028198242,0.004787445,0.008003235,-0.00068950653,0.0032043457,-0.00831604,0.02684021,0.0045051575,0.038085938,-0.028564453,0.025024414,0.010269165,0.031341553,-0.025787354,0.025878906,0.0680542,0.022003174,-0.02079773,0.041534424,0.005382538,-0.0012016296,-0.013420105,-0.014556885,0.049713135,-0.0012378693,0.04977417,0.040740967,0.017654419,-0.0047912598,0.023513794,-0.023849487,-0.019515991,0.062805176,0.02394104,-0.021652222,-0.017196655,0.00083971024,0.0048217773,-0.054138184,-0.027282715,0.013748169,-0.0001269579,0.017181396,-0.008460999,-0.0099487305,-0.019836426,0.01537323,0.027053833,0.010826111,-0.013114929,0.020401001,0.033996582,0.00080633163,0.022949219,-0.0010433197,0.024612427,-0.036224365,-0.026733398,0.019210815,0.020843506,-0.011184692,-0.011543274,0.012664795,0.012397766,0.05670166,0.044403076,-0.007663727,0.012802124,0.029266357,0.0115737915,0.00566864,0.050231934,0.03656006,0.012878418,0.036193848,0.0368042,0.021057129,-0.04449463,0.021560669,0.0012292862,0.0064201355,-0.009674072,-0.018051147,-0.00062036514,-0.01424408,0.02217102,0.0011663437,-0.012039185,0.029312134,0.02229309,0.0055656433,-0.006832123,-0.004699707,0.015060425,-0.013748169,-0.011268616,0.0128479,-0.0035934448,0.030471802,0.007572174,0.03640747,-0.02619934,0.029266357,-0.0053215027,-0.021850586,-0.0032634735,0.026153564,-0.038116455,0.0019836426,-0.0068511963,0.00083208084,-0.038360596,0.013290405,0.032806396,-0.010238647,0.035125732,0.007827759,-0.0042419434,0.0018596649,0.03152466,0.01448822,0.0038890839,-0.0063056946,-0.026504517,0.026611328,0.045043945,0.008483887,0.010971069,-0.021606445,0.0008735657,0.00856781,-0.017486572,0.0004439354,-0.012634277,-0.032440186,-0.025161743,0.00856781,0.03793335,0.02394104,0.045440674,-0.0115356445,-0.016555786,0.012214661,0.028137207,0.005004883,-0.0021400452,-0.013748169,0.012992859,-0.02027893,0.05279541,0.021499634,0.007537842,0.024993896,-0.013931274,-0.021652222,0.012496948,-0.015960693,0.021011353,-0.0074272156,0.0011205673,-0.010231018,0.02268982,-0.019729614,-0.036224365,0.0029296875,-0.015586853,-0.021759033,-0.02607727,0.0026454926,0.013969421,0.02571106,0.04019165,0.020812988,-0.029663086,0.061676025,-0.02281189,0.045532227,-0.010971069,-0.0019369125,0.045837402,0.034484863,0.035217285,0.01966858,0.013160706,-0.040008545,0.008239746,0.04220581,0.020645142,0.0022640228,0.00041222572,-0.02609253,0.038879395,0.0055503845,0.020095825,-0.0052757263,-0.000121474266,0.012916565,-0.013031006,0.00010943413,0.0016698837,-0.0038013458,0.009780884,0.047851562,-0.034362793,-0.013938904,-0.02166748,-0.0135269165,0.023391724,-0.016937256,-0.0024223328,0.011276245,-0.025970459,0.016067505,-0.022354126,-0.015602112,0.0008883476,0.028427124,-0.032226562,-0.016738892,0.0022468567,0.015052795,-0.024154663,0.029006958,0.01008606,-0.0075645447,0.008308411,0.041900635,-0.0135650635,0.03149414,-0.027053833,0.01838684,0.03111267,-0.0023975372,-0.010421753,0.011444092,0.0013074875,-0.015808105,0.0033054352,0.02720642,-0.0129852295,0.0046920776,0.00087308884,-0.008148193,0.0115356445,0.0039405823,-0.0077590942,0.003993988,-0.011856079,-0.008369446,0.0049476624,0.019378662,-0.00011378527,0.011566162,-0.01524353,-0.013290405,-0.004257202,0.04232788,0.017791748,-0.040008545,0.003791809,0.0055770874,0.018707275,-0.020462036,-0.010398865,0.0012540817,-0.034484863,0.020187378,0.020568848,-0.0057144165,0.009735107,-0.017242432,-0.0016593933,0.026123047,0.019577026,0.022140503,-0.00052404404,0.0060691833,0.023010254,-0.031463623,-0.0077552795,-0.0015897751,-0.0066337585,0.0066490173,0.011856079,-0.0028591156,-0.02671814,0.025238037,-0.002374649,0.009544373,0.007621765,-0.016036987,0.018325806,-0.014122009,-0.015205383,0.0065231323,0.022735596,-0.012077332,-0.010894775,-0.01739502,0.029708862,0.05419922,-0.0234375,0.00088596344,0.023330688,0.0075531006,0.014122009,0.02885437,0.007675171,0.04269409,0.021987915,-0.029418945,-0.024612427,0.025238037,-0.014228821,-0.04107666,0.013420105,-0.007972717,-0.009880066,0.011627197,0.020202637,-0.006919861,-0.026473999,-0.02279663,-0.012573242,-0.023147583,0.013305664,-0.014556885,0.013824463,-0.03277588,-0.00031161308,0.0075187683,-0.014099121,-0.04067993,-0.024368286,-0.002161026,-0.009353638,-0.043395996,0.007888794,-0.02078247,0.004623413,-0.015296936,-0.004142761,-0.008804321,0.038238525,-0.026107788,-0.011039734,0.011405945,0.023803711,0.022476196,0.0025920868,0.038482666,-0.019699097,-0.023452759,-0.022537231,-0.00026917458,-0.018615723,0.023895264,0.0035209656,0.03829956,0.017486572,-0.0018701553,-0.001964569,-0.0146865845,-0.010536194,-0.0071411133,-0.029418945,-0.01675415,0.023849487,0.005455017,-0.010345459,-0.0067749023,0.041229248,-0.033691406,-0.018814087,0.017562866,0.041015625,0.008972168,0.03579712,-0.019348145,-0.0063667297,-0.020767212,0.0065956116,-0.013786316,0.0062217712,0.008522034,0.0015201569,-0.015335083,-0.0031414032,0.023910522,-0.01071167,-0.0018081665,0.029556274,-0.0050239563,-0.007575989,0.027236938,0.009086609,0.011772156,-0.011077881,-0.012710571,0.02381897,0.029052734,0.012039185,-0.00085401535,0.006248474,0.016403198,-0.01386261,0.009124756,0.023010254,-0.014022827,-0.030288696,-0.02154541,-0.032806396,0.023406982,0.016937256,0.0071525574,-0.0063705444,0.015388489,-0.026672363,-0.03338623,-0.01852417,0.0206604,0.00831604,-0.008262634,-0.009536743,-0.00023007393,0.019485474,-0.029159546,-0.0002450943,-0.04537964,-0.034606934,-0.008483887,-0.026687622,0.018920898,0.019805908,-0.005207062,0.0006952286,-0.00037288666,-0.0018939972,0.002861023,0.031021118,-0.0112838745,-0.008483887,0.026473999,0.014541626,-0.013786316,0.0059776306,-0.009979248,-0.0037136078,0.022720337,-0.002817154,0.009132385,-0.016952515,0.029968262,-0.003709793,-0.0058403015,0.025878906,0.0039482117,0.01486969,-0.03277588,0.013534546,-0.0042877197,-0.008651733,0.035614014,-0.03048706,-0.012145996,0.0076446533,-0.023529053,-0.03652954,-0.0032653809,0.02281189,0.03933716,-0.0061531067,0.035583496,-0.022720337,-0.021408081,0.020095825,0.00712204,-0.021255493,-0.0022220612,0.047088623,-0.00894165,-0.018066406,-0.007713318,-0.020874023,-0.025222778,-0.009056091,0.01902771,-0.0012111664,-0.009315491,0.02482605,0.012786865,0.045440674,-0.00034618378,0.012573242,0.008331299,0.0006313324,0.026107788,0.008056641,0.047546387,0.0007252693,-0.028793335,0.01675415,-0.0010643005,-0.030776978,-0.007419586,-0.008178711,0.008239746,-0.044036865,0.016738892,-0.00046133995,0.027389526,-0.026504517,0.013771057,-0.02684021,-0.0015621185,-0.03692627,-0.008331299,-0.03201294,0.014228821,0.03326416,-0.003921509,0.0154800415,0.007835388,-0.03289795,0.020996094,0.048797607,-0.006225586,-0.03253174,0.008934021,0.011024475,-0.004180908,0.016921997,0.006839752,-0.008544922,-0.031921387,-0.000603199,-0.011672974,0.0031700134,-0.002811432,0.017959595,0.0018615723,-0.0020713806,0.0019798279,0.030776978,-0.007774353,0.0015468597,0.0011072159,0.0058670044,0.026153564,0.028945923,-0.012275696,0.013023376,0.027938843,-0.037475586,0.054779053,-0.009147644,0.021087646,-0.01737976,-0.006828308,-0.04067993,-0.023452759,-0.018173218,0.0023880005],"createdAt":"2026-04-18T18:38:14.039Z","updatedAt":"2026-04-22T21:30:34.892Z","lastSeenAt":"2026-04-22T21:30:34.892Z","tsv":"'/api':166 '/api/v1/generate/resource/53':111 '/docs':164 '/pricing':165 '/readme':168 '/request':13,28 '0.02':12,27,86,133,135 '000':128 '20':127 '402':209 'Base network API' 'USDC micropayment API' 'accept':153 'access':7,22,38,117,223 'actual':198 'address':150 'ai/ml':59 'analysi':62 'analyt':58 'api':6,21,37,55,98,116,222 'application/json':158 'base':9,24,94,129,137 'broad':48 'call':4,19 'catalog':49 'challeng':123,210 'classif':64 'commit':105 'connect':174 'content':180 'convers':81 'correct':206 'cost':85 'crypto-paid API' 'data':57,218 'document':159,189,213 'embed':65 'endpoint':32,84,152,201 'estim':75 'exact':144 'exampl':192 'exchang':70 'extrem':161 'feed':69 'financ':66 'function':220 'gas':74 'generat':82 'geocod':79 'host':46 'http':154 'http-post' 'infer':60 'infrastructur':77 'json-response' 'key':99 'limit':102 'list':113 'live':203 'lowpaymentfee' 'lowpaymentfee.com':34 'made':140 'maxamountrequir':125 'network':95 'no-api-key' 'openapi':184 'page':169 'particular':196 'pay':2,17,52 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':51 'payment':42,138 'payto':149 'per':3,18,53,87 'post':155 'premium':5,20,36,115,221 'premium API access' 'price':68 'probe':110 'prompt':176 'protocol':43 'provid':35,227 'quot':73 'rate':71,101 'render':171 'request':54,88 'request/response':187 'requir':106 'resourc':109,197 'resource/53':225 'respond':205 'return':119,157,199 'schema':188 'scheme':145 'sentiment':61 'settl':89 'site':45 'span':56 'spars':162 'spec':185 'specif':108,226 'specifi':148 'summar':63 'token':72 'unclear':216 'unit':130 'usdc':15,30,91,132,134 'usdc-base' 'util':78 'valid':80,121 'via':10,25,39,141 'wallet':175 'web3':67 'without':212 'x402':11,26,41,122,143 'x402 API' 'x402-payment'","prices":[{"id":"098e4795-8fd2-40b3-9812-f2eaa724a179","listingId":"24c6e1ec-66a7-48e0-9e2b-aeacd75b94e3","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/generate/resource/53","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:14.039Z"}],"sources":[{"listingId":"24c6e1ec-66a7-48e0-9e2b-aeacd75b94e3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/53","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:14.039Z","lastSeenAt":"2026-04-22T21:30:34.892Z"}],"details":{"listingId":"24c6e1ec-66a7-48e0-9e2b-aeacd75b94e3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/53 \\\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/generate/resource/53"},{"claim":"All endpoints cost $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The site offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/53"}],"useCases":["Accessing premium API resources with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to data, AI, finance, or utility endpoints"],"bestFor":["Developers wanting keyless, pay-per-use API access settled in crypto","AI agents that can handle x402 payment challenges autonomously","Users on the Base L2 network looking for low-cost API calls"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","Applications requiring fiat-only payment methods","High-volume batch processing where per-request pricing may add up"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:42.554Z"},"updatedAt":"2026-04-22T21:30:34.892Z"}}