{"id":"ffa077a0-3a3f-4c95-beb8-fe18f1bebc7e","shortId":"vYtAeH","kind":"x402","title":"x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.","tagline":"x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.","description":"This endpoint at `/api/v1/nfts/13` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. The specific endpoint appears to serve NFT-related data (resource ID 13), though the exact response payload is not documented. Payment is settled on the Base network using USDC (contract `0x8335…2913`) via the x402 \"exact\" scheme.\n\nThe x402 challenge advertises a `maxAmountRequired` of 20,000 base units. Since USDC uses 6 decimals, this converts to $0.02 per request — consistent with the site-wide flat pricing of $0.02/request. The endpoint accepts POST requests, requires no API keys, and claims no rate limits. The payment recipient address is `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, with a max timeout of 300 seconds.\n\nDocumentation is minimal: the landing page lists available endpoints and pricing, but there is no OpenAPI spec, no request/response schema, and no usage examples. The `/api`, `/pricing`, and `/README` pages all resolve to a \"Connect wallet\" prompt with no additional content. Because the NFT endpoint is not listed on the homepage (which focuses on analytics, AI, finance, and utility APIs), its exact functionality is unclear and must be treated as partially documented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","nft-data","pay-per-request","no-api-key","post-method"],"categories":["web3","nft"],"synonyms":["NFT API","NFT data endpoint","x402 NFT","pay-per-call NFT","USDC micropayment API","Base network API","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available for this endpoint","The /api/v1/nfts/13 path is not listed among the provider's advertised endpoints on the homepage — its exact purpose is unknown","No response examples or field descriptions exist anywhere in the crawled material","The /api, /pricing, and /README pages return only a 'Connect wallet' prompt with no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/nfts/13","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/nfts/13","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no documented request/response schema, no examples, and the specific NFT endpoint is not even listed on the provider's homepage. Functionality must be guessed from the URL path alone.","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":"2026-04-21T23:22:08.622Z","embedding":[-0.037963867,-0.026031494,0.042419434,0.015235901,0.013023376,-0.029418945,-0.0098724365,0.027557373,0.048919678,-0.06347656,0.034240723,-0.027389526,-0.052093506,-0.056488037,-0.01977539,0.016693115,-0.014953613,-0.0082473755,-0.047576904,0.023666382,0.04071045,-0.008430481,-0.021209717,0.034210205,-0.01776123,-0.005580902,0.0041122437,0.008178711,-0.0055503845,-0.018234253,0.01828003,-0.020111084,-0.015090942,-0.0018758774,-0.017028809,0.009147644,0.0087890625,0.02822876,0.002286911,-0.013282776,-0.00957489,-0.066467285,0.013435364,-0.011444092,-0.030441284,-0.0129776,0.0018110275,-0.031707764,-0.012550354,0.0038547516,-0.029937744,0.002702713,-0.01675415,-0.0019292831,0.0012283325,0.023971558,0.0023155212,-0.0049362183,0.0042648315,0.012329102,0.005256653,-0.07128906,-0.0064849854,-0.006511688,0.018493652,0.054626465,-0.017868042,0.049957275,-0.013725281,0.09326172,0.020599365,0.049835205,0.032043457,0.008796692,0.0035057068,-0.011444092,-0.010292053,0.053955078,-0.019927979,-0.030700684,-0.021774292,-0.017486572,-0.066223145,-0.03543091,-0.011665344,-0.06317139,-0.02381897,0.017074585,-0.038482666,0.03253174,-0.077697754,-0.009757996,-0.011314392,0.014785767,-0.024993896,-0.021865845,-0.026184082,0.012763977,0.020584106,0.018112183,-0.010520935,-0.03286743,0.019104004,0.0066337585,0.04901123,0.047210693,0.021530151,0.017486572,-0.0044441223,-0.017700195,-0.017349243,0.017807007,0.010124207,-0.0112838745,0.015823364,0.009025574,-0.04083252,0.04473877,-0.0087890625,0.033355713,-0.039794922,0.06137085,0.007671356,0.0030231476,0.010185242,-0.030426025,-0.018203735,0.010292053,-0.01448822,-0.00472641,0.04345703,0.0034732819,0.02949524,-0.018203735,-0.038269043,-0.0043411255,-0.028762817,-0.0072250366,-0.05050659,-0.010925293,0.029586792,-0.025863647,0.03451538,0.04345703,-0.092285156,0.00995636,-0.031219482,0.028060913,-0.03062439,0.0011882782,0.013244629,0.02848816,0.008529663,-0.023635864,-0.016601562,-0.04348755,0.00018572807,0.021850586,-0.011375427,0.03665161,-0.021362305,0.028427124,0.038116455,0.010345459,0.033172607,0.055664062,-0.0101623535,-0.087524414,-0.068115234,-0.0095825195,0.0063667297,-0.022903442,-0.01512146,-0.000042438507,-0.010856628,-0.07196045,-0.020477295,0.0015392303,0.021713257,-0.040008545,-0.00088500977,-0.06915283,-0.010093689,-0.0070114136,-0.05697632,-0.016967773,-0.031829834,0.049102783,0.011756897,0.017990112,0.028640747,-0.0029449463,0.046142578,0.026748657,-0.021957397,-0.028503418,0.022506714,-0.025650024,0.046203613,-0.0044898987,0.020996094,0.0000718832,0.022460938,0.07159424,0.004901886,-0.021957397,-0.0087509155,-0.062683105,-0.03112793,-0.012016296,0.00831604,0.015823364,-0.021942139,0.018875122,-0.045288086,-0.026107788,-0.0016222,0.01927185,0.0017299652,0.04940796,0.013542175,0.02406311,0.017456055,0.029571533,-0.03918457,0.02822876,0.017532349,0.0069465637,-0.015655518,-0.030014038,0.02029419,0.027679443,-0.020584106,0.005252838,-0.0335083,0.010681152,-0.02279663,-0.020248413,-0.0033435822,0.008705139,-0.025619507,-0.05065918,-0.011878967,0.016952515,-0.009216309,-0.03491211,-0.052490234,-0.07208252,0.044281006,0.06335449,0.026107788,0.010383606,-0.0019798279,-0.03286743,-0.017532349,-0.07952881,0.06768799,0.08380127,-0.011039734,-0.0129470825,0.02798462,-0.014503479,-0.036712646,-0.006362915,-0.012466431,-0.034088135,-0.016052246,0.013633728,-0.03744507,0.014564514,0.026779175,0.018035889,0.03387451,-0.037994385,-0.05557251,-0.017501831,-0.013198853,0.014305115,-0.028900146,-0.026535034,0.008979797,0.022750854,0.028869629,0.016174316,0.00730896,-0.010932922,0.0042877197,0.0063552856,0.009719849,-0.005329132,-0.01789856,0.011009216,0.010322571,-0.051727295,0.014411926,-0.004764557,0.05014038,-0.05255127,0.03213501,-0.00730896,-0.0033950806,0.040283203,-0.0068244934,-0.04623413,-0.0079193115,0.012672424,0.034240723,0.056640625,0.013084412,-0.005458832,-0.014755249,0.06530762,-0.029312134,-0.01878357,0.003276825,0.034973145,0.053497314,0.018600464,-0.05380249,-0.030426025,-0.0017089844,-0.027267456,0.04449463,-0.015014648,0.022140503,-0.013397217,0.018600464,-0.020080566,-0.012664795,-0.021102905,0.01399231,-0.022613525,0.004348755,-0.010719299,-0.004299164,0.012931824,0.028015137,-0.014419556,0.0029506683,0.03881836,0.02470398,-0.02027893,-0.016082764,-0.0413208,-0.027191162,0.00008165836,0.0099105835,0.01965332,0.002313614,0.04232788,-0.046020508,0.00039982796,0.01878357,0.003030777,0.04333496,0.009918213,-0.014060974,-0.07318115,-0.047668457,-0.036895752,-0.03778076,0.035888672,0.025405884,-0.0020828247,0.04498291,-0.011245728,-0.027130127,-0.03567505,0.016784668,-0.058929443,-0.007209778,0.045166016,-0.01689148,-0.018218994,0.02645874,0.0058250427,0.021652222,0.037506104,0.021652222,0.01007843,0.07775879,0.030136108,0.0046806335,-0.0002875328,0.030166626,0.02128601,-0.0027217865,-0.015182495,-0.027679443,-0.0395813,0.025817871,-0.03010559,-0.041992188,-0.05392456,0.05291748,0.028717041,0.07733154,0.008911133,0.009971619,0.053344727,-0.009857178,0.00187397,-0.025344849,-0.0317688,-0.036895752,-0.019989014,0.021881104,-0.0038280487,-0.00072288513,-0.037719727,0.022018433,0.0068473816,0.011520386,-0.036987305,0.055114746,-0.006538391,0.0006117821,0.010848999,0.0022411346,0.056854248,0.05529785,-0.037017822,0.016433716,-0.009063721,-0.043060303,-0.0037994385,0.02796936,0.0052490234,-0.018875122,-0.066711426,-0.026794434,0.008773804,-0.01096344,-0.03930664,-0.00920105,0.002117157,0.03010559,0.04067993,-0.0016307831,-0.022720337,0.0027275085,-0.0032196045,-0.064208984,0.008224487,-0.05783081,0.008407593,0.04284668,-0.01739502,0.0077285767,-0.009132385,0.0077590942,-0.017227173,0.03717041,0.008895874,0.007457733,-0.03753662,0.029342651,-0.0067710876,0.023788452,0.0095825195,0.046020508,0.035247803,0.027526855,0.034606934,0.015365601,-0.035247803,-0.051696777,0.041046143,-0.040496826,0.0029449463,0.02456665,-0.02835083,0.0072250366,-0.0066871643,-0.025924683,-0.027893066,0.0077819824,-0.022521973,-0.0047035217,0.03387451,-0.017608643,-0.02319336,-0.046783447,-0.03189087,0.009277344,0.056121826,0.03604126,0.0135269165,-0.04638672,-0.024169922,0.025390625,-0.0033950806,0.014152527,-0.014190674,-0.00969696,-0.030960083,-0.03387451,-0.022369385,-0.02708435,0.035858154,-0.011672974,-0.0047798157,0.022201538,0.008682251,-0.0011701584,0.006965637,-0.011070251,0.031707764,-0.031204224,0.02041626,-0.0049591064,0.04534912,-0.0030536652,-0.015090942,-0.038970947,0.05307007,-0.006374359,0.042755127,-0.04458618,0.0057411194,-0.0040359497,0.027633667,0.0061416626,-0.024154663,0.0015487671,0.002708435,-0.036621094,-0.06604004,0.038757324,0.005657196,0.030349731,0.016235352,0.008277893,0.03982544,-0.015586853,-0.0064086914,0.019927979,-0.021896362,-0.020843506,-0.036254883,-0.03237915,-0.026275635,-0.008338928,-0.027420044,0.023147583,-0.00409317,0.020401001,-0.00017285347,-0.02998352,0.0030059814,0.015274048,-0.0030231476,0.01940918,0.0014677048,0.021270752,0.054473877,0.012886047,-0.04196167,0.027114868,0.006061554,0.002872467,-0.010826111,0.03829956,0.04220581,-0.0070877075,-0.0052986145,-0.0077552795,0.010856628,-0.024398804,-0.012550354,0.00712204,0.013114929,0.020553589,-0.032073975,0.004272461,0.008598328,-0.021713257,-0.020217896,-0.00060653687,0.033050537,-0.039367676,0.015388489,0.021438599,0.049804688,-0.025100708,0.0011701584,0.0121154785,0.046966553,0.020462036,-0.003408432,-0.005329132,0.022262573,-0.00074863434,0.01676941,0.008811951,-0.025436401,0.011154175,0.012992859,0.020507812,0.0149383545,0.000020742416,-0.012039185,-0.035003662,-0.0035533905,0.010124207,-0.028167725,0.033721924,0.020584106,0.03387451,-0.009803772,0.014839172,0.00919342,-0.0154418945,-0.024490356,0.0020885468,0.020843506,-0.008110046,0.0030097961,0.005744934,0.020889282,0.017669678,-0.056396484,0.0022239685,0.016540527,0.02178955,-0.018234253,-0.051208496,-0.026870728,-0.022125244,0.024383545,-0.0050849915,0.007282257,0.031677246,-0.00094509125,-0.013504028,0.008003235,0.016281128,-0.008560181,-0.018920898,-0.0519104,-0.012336731,-0.008979797,-0.002571106,-0.016906738,0.0057373047,-0.023422241,-0.03604126,0.006538391,-0.028457642,-0.006717682,-0.0051231384,0.0054740906,0.024719238,-0.012420654,0.020568848,-0.019744873,-0.03302002,-0.010108948,-0.002155304,0.023391724,-0.039245605,0.017684937,-0.025970459,0.00484848,-0.0010671616,0.006881714,0.017028809,0.03375244,0.0032634735,0.027267456,-0.032348633,0.037750244,-0.02168274,0.01638794,0.005104065,-0.024154663,-0.013092041,-0.026626587,-0.015914917,0.03866577,-0.0073776245,-0.008384705,-0.018051147,-0.04724121,-0.017425537,-0.05291748,0.019821167,0.023910522,0.03982544,-0.017700195,0.008918762,0.019592285,0.01424408,-0.012649536,0.010635376,-0.004169464,0.01448822,0.031097412,0.00030899048,-0.03387451,-0.03463745,-0.0008225441,-0.0024051666,-0.051361084,-0.041778564,-0.01725769,0.0013475418,0.005050659,0.014251709,-0.025009155,-0.02659607,-0.0039405823,-0.03289795,0.022750854,-0.0030021667,0.017623901,0.019744873,-0.023010254,0.012382507,0.019073486,-0.025360107,0.022659302,0.026046753,0.0010299683,-0.03274536,-0.0011301041,0.027114868,0.011146545,-0.00459671,-0.019821167,0.0034275055,-0.02394104,-0.049865723,0.010856628,-0.0051460266,-0.00089740753,0.00016832352,-0.00459671,-0.049316406,0.0030651093,-0.02961731,0.002204895,0.012199402,0.007904053,0.0076446533,0.008110046,0.005130768,-0.010414124,-0.014755249,-0.027709961,0.0026378632,0.010444641,-0.002653122,0.028060913,0.03756714,0.0037670135,-0.011734009,-0.0043792725,0.0020332336,0.01512146,-0.020996094,-0.0014791489,-0.021011353,0.024459839,0.007217407,-0.01914978,-0.037750244,0.00041341782,0.051208496,-0.002450943,0.001704216,0.0050468445,-0.0075149536,0.021774292,0.04321289,-0.048583984,-0.0042800903,-0.024520874,0.028945923,-0.019897461,0.007335663,-0.0034542084,0.029830933,-0.026046753,-0.0395813,-0.0053749084,0.00019776821,-0.0084991455,-0.062683105,-0.029800415,-0.06451416,0.0064926147,-0.021484375,-0.019866943,-0.0051956177,0.014884949,-0.028640747,-0.082458496,-0.008003235,0.058563232,0.010932922,0.013320923,-0.006134033,0.031982422,0.033111572,-0.021194458,-0.010978699,0.02557373,-0.025939941,-0.00012636185,-0.023529053,0.041107178,-0.0017442703,-0.01676941,0.017608643,0.0178833,0.011749268,-0.027908325,0.032104492,-0.019683838,-0.006958008,-0.004886627,0.0107040405,-0.021270752,-0.019302368,0.041015625,-0.054748535,0.037139893,0.0057907104,0.018463135,0.014419556,0.028167725,0.03427124,-0.045776367,-0.0058937073,0.019439697,0.017959595,0.052001953,-0.026123047,0.019241333,0.0051193237,-0.009307861,0.0010108948,-0.027572632,-0.013656616,-0.057006836,-0.027114868,0.032165527,0.0025405884,-0.01322937,-0.023010254,0.02053833,0.010795593,0.01651001,0.006706238,-0.016647339,-0.017410278,-0.037506104,0.017028809,0.011459351,-0.0015115738,-0.0026760101,0.017486572,0.042999268,0.02520752,0.0049362183,-0.012420654,-0.0008416176,0.021774292,-0.0042877197,-0.010253906,0.025100708,0.019134521,0.019546509,0.02619934,0.018692017,-0.04196167,-0.032348633,-0.008155823,-0.017364502,0.010116577,-0.008987427,0.009223938,0.005592346,0.008003235,-0.010253906,-0.027130127,0.0072631836,-0.034362793,-0.03024292,-0.0016670227,-0.0066986084,0.02053833,0.0055160522,-0.014411926,0.013969421,-0.0028457642,0.038726807,-0.00031638145,-0.02204895,0.04385376,0.029907227,0.01675415,-0.024154663,-0.008361816,-0.013397217,-0.023345947,0.00025844574,-0.01474762,0.008323669,0.035736084,-0.013801575,0.012756348,-0.0042533875,0.027191162,-0.0044898987,0.015213013,0.012374878,0.010169983,-0.017486572,0.04864502,-0.050323486,0.020507812,0.010284424,-0.00089883804,-0.00566864,-0.0058059692,-0.023910522,0.021026611,0.010414124,0.007785797,0.030136108,-0.019378662,0.025344849,-0.025894165,-0.021820068,-0.0067253113,-0.020095825,-0.017929077,0.0079574585,-0.00944519,0.0047416687,0.023132324,-0.024749756,0.017486572,-0.017028809,0.0036144257,0.009567261,-0.010887146,-0.02279663,-0.027236938,0.001783371,-0.02015686,-0.029586792,0.010726929,-0.015602112,0.056915283,0.027816772,0.0013456345,0.024337769,0.016433716,0.026824951,-0.032684326,-0.036712646,-0.003314972,-0.025772095,0.025436401,-0.025863647,0.040863037,0.038513184,0.025436401,0.052734375,0.020401001,0.037017822,-0.0062294006,0.012557983,-0.01474762,0.013374329,-0.0418396,0.021438599,-0.015083313,0.051330566,-0.035980225,0.009407043,0.0053596497,0.03591919,-0.015457153,0.01828003,0.058624268,0.03010559,-0.008056641,0.05117798,0.0062026978,-0.023757935,-0.018692017,-0.01600647,0.045440674,0.03201294,0.021102905,0.028823853,0.008865356,-0.0042877197,0.022033691,-0.030838013,-0.014122009,0.03286743,0.028686523,-0.020004272,-0.009666443,-0.010917664,-0.0005340576,-0.04220581,-0.0024642944,0.017578125,0.00566864,0.0075531006,-0.010917664,-0.0064468384,-0.020858765,0.028915405,0.0011482239,0.007858276,-0.014434814,0.026031494,0.0256958,0.002544403,0.025436401,0.009529114,0.0184021,-0.021133423,-0.02796936,0.016021729,0.03010559,-0.0072288513,-0.0012273788,0.030685425,0.012313843,0.03778076,0.01398468,-0.026870728,-0.017532349,0.018844604,0.014915466,-0.010787964,0.04373169,0.03488159,0.024917603,0.035736084,0.031799316,0.027389526,-0.032318115,0.012580872,-0.0076446533,0.00554657,-0.0061035156,0.004043579,0.019821167,-0.006931305,0.024154663,-0.0047950745,-0.0134887695,0.021621704,0.02406311,0.0057868958,-0.025466919,0.003835678,0.014381409,-0.02243042,-0.000992775,0.011413574,-0.008239746,0.022827148,0.02015686,0.04019165,-0.027374268,0.039489746,0.0077819824,-0.017669678,-0.01676941,0.021408081,-0.042388916,0.0017538071,-0.011932373,-0.010810852,-0.045196533,0.017654419,0.031951904,-0.0033817291,-0.0009150505,0.0052986145,-0.0048103333,-0.0027618408,0.040496826,0.028533936,-0.008392334,-0.0004620552,-0.020050049,0.014122009,0.03692627,-0.008781433,-0.013214111,-0.026626587,0.0011730194,0.016281128,-0.0022563934,-0.0026283264,0.007980347,0.0029659271,-0.040252686,0.020889282,0.029830933,0.019821167,0.04269409,-0.012756348,-0.015960693,-0.004463196,0.03643799,0.011184692,-0.009429932,-0.014640808,0.017852783,-0.021972656,0.04840088,0.033447266,-0.008087158,0.039855957,0.00006711483,-0.01776123,-0.004432678,-0.010192871,0.030273438,-0.017684937,0.0019512177,-0.015716553,0.026107788,-0.016830444,-0.027893066,-0.004722595,-0.024749756,-0.025009155,-0.018051147,0.017547607,0.0047187805,0.015563965,0.042907715,0.019470215,-0.016418457,0.057281494,-0.0076065063,0.044281006,-0.0065078735,0.009300232,0.05493164,0.019577026,0.05001831,0.022064209,0.012054443,-0.030776978,0.007709503,0.013435364,0.016174316,0.012489319,0.0031776428,-0.021224976,0.041534424,-0.01675415,0.02545166,0.0061073303,-0.0062294006,0.009727478,-0.015670776,-0.013313293,-0.0017442703,-0.0031814575,0.019943237,0.045410156,-0.034118652,-0.0039596558,-0.015930176,-0.014122009,0.028762817,0.008979797,0.0099105835,0.0044517517,-0.026901245,0.007835388,-0.020462036,-0.02128601,0.00806427,0.026016235,-0.044830322,-0.0058898926,0.0098724365,0.022766113,-0.024734497,0.04751587,0.05307007,0.0046157837,-0.00019645691,0.039367676,-0.010612488,0.039489746,-0.024414062,0.02848816,0.037994385,0.0062294006,-0.00018680096,0.018661499,0.0065193176,-0.016921997,0.008781433,0.028915405,0.010612488,0.0005159378,0.0069007874,0.007217407,-0.004257202,0.0031261444,-0.015777588,0.0060157776,-0.014587402,-0.016860962,0.007358551,0.007835388,0.0033855438,0.006565094,-0.013694763,-0.003145218,0.017196655,0.032928467,0.023910522,-0.045898438,-0.016540527,0.014160156,0.021896362,-0.026367188,-0.0070610046,-0.0017671585,-0.030807495,0.00894165,0.023880005,0.005882263,0.011558533,-0.023498535,-0.016525269,0.041870117,0.005680084,0.024459839,0.036071777,-0.00504303,0.014083862,-0.008071899,0.0045776367,-0.00459671,-0.0034332275,0.022125244,0.023223877,-0.01675415,-0.027297974,0.016036987,-0.015274048,0.012825012,0.00856781,-0.0040283203,0.0262146,-0.019363403,0.004753113,0.0076942444,0.004310608,-0.021881104,-0.020401001,-0.0063438416,0.018966675,0.047851562,-0.020843506,-0.017333984,0.031677246,0.032196045,0.016906738,0.02760315,0.017745972,0.0335083,0.022247314,-0.01600647,-0.028579712,0.012535095,-0.009300232,-0.0184021,0.023010254,-0.02330017,-0.029022217,0.022659302,0.015327454,-0.0047454834,-0.029418945,-0.0030612946,-0.020935059,-0.021209717,0.026565552,0.0040245056,0.030761719,-0.017608643,0.000058591366,0.02229309,-0.03933716,-0.020706177,-0.0017528534,0.008117676,-0.02407837,-0.0546875,0.0015392303,-0.013542175,0.016235352,-0.020629883,-0.00005555153,-0.0135650635,0.026138306,0.0007619858,-0.0093307495,0.006175995,0.015808105,0.0044021606,0.008605957,0.029541016,-0.026229858,-0.033416748,-0.007736206,0.019927979,-0.026153564,0.026641846,-0.017150879,0.032043457,0.009162903,-0.009773254,0.0052948,-0.009498596,-0.023208618,-0.0060272217,-0.040283203,-0.02722168,0.012809753,0.02746582,-0.010185242,-0.011543274,0.04055786,-0.01184845,-0.01701355,0.033081055,0.03591919,0.013092041,0.030532837,0.0067977905,0.006034851,-0.025726318,0.008300781,-0.024246216,0.0024261475,-0.01259613,0.012969971,0.008255005,0.021209717,0.014381409,-0.0041236877,-0.00793457,0.027114868,0.01424408,0.012626648,0.029418945,0.011062622,-0.00894928,-0.02180481,-0.019073486,0.009361267,0.039276123,0.011451721,0.012031555,0.0060691833,0.012420654,-0.009391785,0.01461792,0.020202637,-0.017288208,-0.04019165,-0.014839172,-0.034423828,0.020812988,-0.0040893555,0.01687622,-0.00598526,0.019714355,-0.0034656525,-0.046905518,-0.015083313,0.030471802,0.014045715,-0.0013599396,-0.014205933,-0.007736206,0.0042877197,-0.034942627,-0.0037899017,-0.050872803,-0.033081055,-0.024230957,-0.0026378632,0.015670776,0.004348755,-0.016281128,0.007896423,-0.012283325,0.003921509,0.008850098,0.015068054,-0.021408081,0.0006542206,0.020065308,0.02456665,-0.010795593,0.013725281,-0.0047683716,-0.0019483566,0.021240234,-0.009475708,0.032470703,-0.021118164,0.026519775,0.0031013489,-0.008857727,0.025863647,-0.0025901794,0.026031494,-0.023117065,-0.010864258,-0.015571594,0.012840271,0.028457642,-0.012168884,-0.031829834,0.006790161,-0.014045715,-0.02696228,-0.0042915344,0.001660347,0.035186768,-0.019760132,0.04220581,-0.020401001,-0.02507019,0.012542725,0.0018692017,-0.027832031,0.0037155151,0.01386261,0.002527237,-0.0005636215,-0.0025520325,-0.006965637,-0.03717041,-0.0119018555,0.0105896,-0.0062446594,-0.0056495667,0.009498596,0.00982666,0.05215454,-0.012367249,0.021102905,0.030181885,0.018814087,0.029510498,0.010505676,0.036132812,0.00016224384,-0.03060913,-0.010368347,0.0039138794,-0.02746582,0.014472961,-0.0021476746,-0.00894928,-0.0385437,0.021408081,-0.0062026978,0.029510498,0.0126571655,0.0032367706,-0.027038574,0.008766174,-0.032928467,-0.0036182404,-0.03704834,0.02079773,0.04559326,0.013175964,0.0047035217,-0.0066986084,-0.017715454,0.03564453,0.048309326,-0.008346558,-0.05355835,-0.026443481,0.024124146,0.0045433044,0.0065231323,0.0012550354,-0.0317688,-0.010597229,-0.014381409,-0.010948181,0.0018444061,-0.005744934,0.011230469,0.020401001,-0.008895874,-0.00995636,0.022994995,-0.010719299,-0.0024223328,0.0011978149,0.004207611,0.041809082,0.031097412,-0.014373779,0.0107803345,0.026565552,-0.041259766,0.050231934,-0.016067505,0.002254486,-0.0024299622,0.01727295,-0.03778076,-0.021438599,-0.014755249,0.011131287],"createdAt":"2026-04-21T18:32:27.347Z","updatedAt":"2026-04-22T23:02:49.030Z","lastSeenAt":"2026-04-22T23:02:49.030Z","tsv":"'/api':182 '/api/v1/nfts/13':32 '/pricing':183 '/readme':185 '/request':129 '0.02':10,24,116,128 '000':105 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':149 '0x8335':90 '13':71 '20':104 '2913':91 '300':155 '6':111 'Base network API' 'NFT API' 'NFT data endpoint' 'USDC micropayment API' 'accept':132 'addit':196 'address':147 'advertis':100 'ai':212 'ai/ml':53 'analyt':52,211 'api':49,137,216 'appear':62 'avail':164 'base':8,22,85,106 'base-network' 'challeng':99 'claim':140 'collect':40 'connect':191 'consist':119 'content':197 'contract':89 'convert':114 'data':5,19,51,68 'decim':112 'document':79,157,228 'endpoint':6,20,30,61,131,165,201 'exact':74,95,218 'exampl':180 'financ':213 'finance/web3':55 'flat':125 'focus':209 'function':219 'gate':3,17 'homepag':207 'id':70 'infer':54 'infrastructur':57 'key':138 'land':161 'limit':143 'list':163,204 'lowpaymentfee' 'lowpaymentfee.com':37 'max':152 'maxamountrequir':102 'minim':159 'must':223 'network':86 'nft':4,18,66,200 'nft-data' 'nft-relat':65 'no-api-key' 'openapi':172 'page':162,186 'part':34 'partial':227 'pay':9,23,46 'pay-per-call NFT' 'pay-per-request':45 'payload':76 'payment':80,145 'per':11,25,47,117 'platform':38 'post':133 'post-method' 'price':126,167 'prompt':193 'protocol':44 'rate':142 'recipi':146 'relat':67 'request':12,26,48,118,134 'request/response':175 'requir':135 'resolv':188 'resourc':69 'respons':75 'schema':176 'scheme':96 'second':156 'serv':64 'settl':82 'sinc':108 'site':123 'site-wid':122 'span':50 'spec':173 'specif':60 'though':72 'timeout':153 'treat':225 'unclear':221 'unit':107 'usag':179 'usdc':14,28,88,109 'usdc-settlement' 'use':87,110 'util':58,215 'via':92 'wallet':192 'wide':124 'x402':2,16,43,94,98 'x402 NFT' 'x402-gated':1,15 'x402-payment' 'x402-protocol':42","prices":[{"id":"8d63ccba-50c0-45ae-8507-b73228eb3cbe","listingId":"ffa077a0-3a3f-4c95-beb8-fe18f1bebc7e","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/nfts/13","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:27.347Z"}],"sources":[{"listingId":"ffa077a0-3a3f-4c95-beb8-fe18f1bebc7e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/nfts/13","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:27.347Z","lastSeenAt":"2026-04-22T23:02:49.030Z"}],"details":{"listingId":"ffa077a0-3a3f-4c95-beb8-fe18f1bebc7e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/nfts/13 \\\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":"x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/nfts/13"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/nfts/13"},{"claim":"Site-wide pricing is $0.02 per request with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"Payment recipient address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/nfts/13"}],"useCases":["Fetching NFT metadata or details for a specific token/collection","Integrating pay-per-request NFT data into agent workflows","Programmatic access to NFT information without API key management"],"bestFor":["Agents or bots that need on-demand NFT data without subscription overhead","Developers experimenting with x402 payment protocol integrations","Low-volume, pay-as-you-go NFT data retrieval"],"notFor":["High-volume NFT data ingestion where per-call costs add up quickly","Use cases requiring well-documented request/response schemas upfront","Users who cannot pay in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:12:59.576Z"},"updatedAt":"2026-04-22T23:02:49.030Z"}}