{"id":"fdf8b181-3e17-4955-91c9-3f8e03d0d953","shortId":"yethSD","kind":"x402","title":"Mint an NFT from the x721 collection on Base via x402 payment protocol","tagline":"Mint an NFT from the x721 collection on Base via x402 payment protocol","description":"x721.dev hosts what it describes as the first 10,000-piece NFT collection minted entirely through the x402 payment protocol on the Base network. The single endpoint at `/mint` accepts a GET request with an x402 payment header and, upon successful payment of 40.2 USDC, mints an NFT and returns the caller's user address.\n\nThe x402 challenge specifies payment in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base, with a maximum timeout of 60 seconds. The payment recipient is `0x70DA5f2A851FB936eFF8207f2733b0914cC44B7D`. The endpoint is live and returns a standard 402 challenge when called without payment credentials.\n\nDocumentation is minimal — there is no OpenAPI spec, no docs page, and no additional API endpoints beyond `/mint`. The root URL returns a JSON object describing the project and linking to x402scan for validation. The collection is also listed on x402scan at the provided link.","tags":[],"capabilities":["nft-minting","x402-payment","base-network","usdc-payment","erc721"],"categories":["blockchain","nft"],"synonyms":["NFT mint","x402 NFT","Base NFT","USDC mint","402 protocol NFT","x721","on-chain mint"],"warnings":["No documentation available — /docs, /api, /pricing, and /README all return 404","Output schema only specifies a 'user' field; no details on the minted NFT token ID or metadata","No OpenAPI or machine-readable API specification provided","40.2 USDC per mint is a non-trivial cost; verify collection availability before paying"],"endpointUrl":"https://x721.dev/mint","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x70DA5f2A851FB936eFF8207f2733b0914cC44B7D","scheme":"exact","network":"base","mimeType":"","resource":"https://x721.dev/mint","description":"Mint the first NFT by x402","outputSchema":{"input":{"type":"http","method":"GET"},"output":{"user":{"type":"string","description":"user address"}}},"maxAmountRequired":"40200000","maxTimeoutSeconds":60}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live with a valid 402 challenge and a clear outputSchema, but documentation is essentially nonexistent — no OpenAPI spec, no docs page, and only a brief JSON description at the root. Pricing is clear (40.2 USDC) and the payment scheme is well-defined, but there is no information about the minted NFT (token ID, metadata, contract address) or error handling.","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":"2026-04-18T19:21:59.485Z","embedding":[-0.028457642,-0.049041748,0.03161621,-0.008430481,0.0020942688,-0.010925293,0.009918213,0.027801514,0.0287323,-0.035339355,0.04446411,-0.041992188,-0.025817871,-0.044433594,-0.017028809,0.020965576,-0.008811951,-0.0042686462,-0.016052246,0.029663086,0.07684326,0.029251099,0.03326416,0.03036499,0.008773804,0.011566162,-0.05267334,0.010932922,0.0052948,-0.022720337,0.03756714,-0.010765076,0.007926941,0.024719238,-0.016342163,0.014389038,0.02607727,0.0154953,-0.002161026,0.0046920776,0.015960693,-0.056640625,0.030822754,0.011077881,-0.013847351,-0.03302002,0.011947632,-0.01600647,-0.014656067,0.014404297,-0.015731812,0.039886475,0.0009665489,0.0048828125,-0.0039520264,0.008628845,-0.01940918,0.011978149,0.010177612,0.00566864,0.00894165,-0.033843994,-0.013092041,-0.006198883,0.05532837,0.015106201,-0.000069499016,0.051605225,0.020523071,0.070495605,0.034851074,0.064086914,0.008674622,-0.009613037,0.010620117,-0.048614502,-0.0029563904,0.0491333,-0.020858765,-0.015655518,0.003162384,-0.051208496,-0.029052734,-0.015792847,-0.04840088,-0.057861328,-0.0013561249,0.018066406,-0.020462036,0.00466156,-0.07836914,0.012794495,-0.023803711,-0.03363037,0.00061035156,-0.0027236938,-0.025161743,0.015464783,0.013381958,-0.011688232,-0.028701782,-0.035369873,0.026611328,-0.025756836,0.005519867,0.059387207,0.016036987,0.03326416,0.00029182434,0.013442993,-0.039489746,-0.018478394,0.030899048,0.006175995,0.02947998,-0.00308609,0.0026760101,0.018203735,0.0008277893,0.021408081,-0.05102539,0.03466797,-0.0104522705,-0.002313614,-0.027740479,-0.022476196,0.0053634644,-0.0072631836,-0.011932373,0.029403687,0.05731201,-0.017059326,0.004550934,-0.01322937,0.0034618378,-0.015899658,-0.036712646,-0.028457642,-0.046447754,-0.005203247,0.025634766,-0.0670166,0.004310608,0.046142578,-0.04586792,-0.011886597,-0.043304443,0.034820557,-0.014289856,-0.02607727,0.016189575,0.023162842,0.004764557,-0.006210327,-0.04901123,-0.03753662,-0.03237915,0.021194458,0.0015850067,0.029663086,0.03491211,0.011695862,0.013320923,-0.015235901,0.04360962,0.047027588,-0.027938843,-0.047302246,-0.06536865,-0.0050582886,-0.0036125183,0.0064086914,-0.033599854,0.012268066,0.0079422,-0.017837524,-0.05126953,-0.009506226,0.027511597,-0.034484863,0.0020275116,-0.029663086,0.008628845,-0.021987915,-0.014060974,-0.0029335022,-0.032562256,0.026351929,0.0082473755,0.023010254,-0.01663208,0.021759033,-0.0065193176,0.032073975,0.001789093,-0.02394104,0.034942627,-0.010650635,0.038726807,0.01876831,0.00491333,0.032043457,0.0035972595,0.07873535,0.0121154785,-0.004337311,-0.01007843,-0.061553955,-0.038879395,-0.0096206665,0.02003479,0.014007568,0.00065135956,0.008735657,-0.026489258,-0.004310608,0.025924683,-0.024780273,-0.0071372986,0.03527832,0.013092041,0.019744873,0.03161621,0.022262573,0.0031204224,0.042297363,-0.0057296753,-0.026260376,-0.00032496452,-0.03427124,-0.019515991,0.017120361,-0.036712646,0.0008330345,-0.044128418,0.013442993,-0.03744507,-0.0011606216,0.025756836,-0.006259918,-0.024856567,-0.040863037,-0.0038433075,0.031707764,-0.004722595,-0.023452759,-0.043945312,-0.06958008,0.016235352,0.033233643,0.018066406,0.022033691,-0.005744934,-0.0057868958,-0.026504517,-0.043182373,0.017410278,0.051696777,0.0026130676,-0.011703491,-0.0105896,-0.052368164,-0.06530762,0.0073776245,-0.03729248,-0.0040016174,-0.031280518,0.003610611,-0.008911133,0.03302002,0.010116577,0.011802673,0.031311035,-0.03540039,-0.049041748,-0.015335083,-0.048736572,0.01713562,-0.017990112,-0.018295288,0.023513794,0.042297363,0.02658081,0.025772095,0.03137207,-0.0030574799,0.019989014,0.004688263,0.02986145,-0.0030670166,-0.0043678284,0.030517578,0.02104187,-0.026000977,-0.012962341,-0.017349243,0.07318115,-0.06616211,0.02293396,-0.007926941,0.03390503,0.041168213,-0.009590149,-0.055389404,0.00818634,0.030441284,0.032470703,0.036621094,0.022705078,0.027191162,0.0056648254,0.0043525696,-0.064453125,-0.030014038,0.026809692,0.03640747,0.03604126,0.031097412,-0.030670166,-0.00945282,-0.026916504,-0.030776978,0.042541504,-0.012084961,0.032196045,0.016159058,-0.007713318,-0.018737793,0.01789856,-0.035491943,0.011756897,-0.049926758,0.00793457,-0.03781128,0.021621704,0.0036296844,0.04156494,-0.06976318,-0.0039024353,0.036956787,0.013458252,-0.023712158,0.010536194,-0.039978027,-0.035827637,-0.034698486,0.01600647,0.01612854,-0.020645142,0.041381836,-0.05392456,-0.00058984756,0.0026435852,0.0104599,0.0309906,0.028076172,-0.024551392,-0.038970947,-0.053833008,-0.047027588,-0.053833008,0.019134521,0.033233643,-0.02281189,0.064575195,-0.014602661,-0.008659363,-0.03793335,-0.0065689087,-0.061035156,-0.035614014,0.023864746,-0.03555298,-0.04763794,0.00308609,0.0357666,-0.0005912781,0.016586304,0.034179688,0.001619339,0.043029785,0.016830444,0.015083313,0.009117126,0.028823853,-0.001613617,0.018295288,-0.021255493,-0.025787354,-0.0070762634,0.037231445,-0.07281494,-0.018966675,-0.04208374,0.091796875,0.038482666,0.045288086,0.013656616,0.02166748,0.03643799,-0.007698059,0.0001705885,0.012298584,-0.031433105,-0.031555176,-0.0030288696,0.010604858,-0.011276245,-0.03640747,0.011451721,-0.0005607605,-0.046539307,0.0044021606,-0.02734375,0.057617188,-0.014480591,-0.066467285,0.02684021,0.00070524216,0.02319336,0.016525269,-0.030471802,0.049743652,-0.032928467,-0.008232117,0.002653122,0.031463623,-0.023498535,-0.0026874542,-0.08251953,-0.02468872,0.0045433044,-0.008079529,-0.001786232,-0.00459671,0.005622864,-0.00087976456,0.045074463,0.0027332306,-0.0042800903,-0.012054443,0.020751953,-0.025024414,-0.0019025803,-0.076171875,0.005493164,0.011451721,-0.033416748,0.029937744,-0.034484863,0.012832642,-0.017837524,0.041656494,0.0042495728,0.025680542,-0.01914978,0.034942627,0.017486572,0.017745972,-0.008125305,0.010002136,0.04345703,0.011314392,0.030822754,-0.0010204315,-0.0029716492,-0.042755127,0.043151855,0.0025787354,-0.018096924,0.029205322,-0.019592285,0.007572174,-0.005168915,-0.010635376,-0.039093018,0.015411377,0.021316528,0.039398193,0.028152466,-0.02418518,-0.044403076,-0.023727417,-0.015357971,0.020126343,0.06707764,0.003293991,0.040924072,-0.046569824,-0.0039901733,-0.007095337,0.026123047,-0.01184845,-0.01348114,0.033111572,-0.01914978,0.0016126633,-0.025772095,-0.025009155,0.0317688,-0.002696991,0.023803711,0.026641846,0.017349243,-0.0019607544,0.021118164,-0.0075302124,0.051818848,-0.0006136894,0.032928467,0.028274536,0.025115967,0.005207062,-0.015350342,-0.026535034,0.06317139,0.008621216,0.022567749,-0.027893066,0.0059127808,-0.01576233,0.02520752,-0.01802063,-0.045074463,0.034973145,0.02508545,0.0027580261,-0.06518555,0.049957275,0.018218994,0.011703491,0.008300781,0.007858276,0.004108429,-0.0012302399,-0.00058555603,0.012275696,-0.0000069737434,-0.0095825195,-0.02772522,0.00289917,-0.020751953,-0.026123047,-0.017486572,0.023025513,0.006664276,-0.0075798035,-0.008377075,-0.007080078,0.043395996,0.0066070557,0.012298584,-0.0104904175,0.012832642,0.005569458,0.040222168,-0.01272583,-0.03427124,0.032592773,0.015548706,-0.005622864,0.035064697,0.033355713,0.020355225,0.01676941,-0.01007843,-0.011909485,0.01914978,-0.03616333,-0.0093307495,-0.0074386597,-0.028121948,0.025527954,-0.03161621,0.018814087,0.0021343231,-0.030334473,0.010772705,-0.025253296,0.057037354,-0.032196045,-0.016647339,0.040222168,0.045135498,-0.03366089,-0.012413025,-0.011932373,0.024307251,0.038879395,-0.01687622,-0.041412354,-0.0029754639,0.0088272095,0.01864624,0.01864624,-0.050811768,0.019332886,0.008300781,0.03555298,0.0025959015,0.017990112,-0.03656006,-0.014427185,-0.01864624,0.0049705505,-0.01725769,0.009864807,0.022872925,0.01499176,0.019592285,-0.011665344,0.022644043,0.0015277863,-0.03265381,-0.015991211,0.04498291,0.026260376,-0.016159058,0.017562866,0.01977539,0.039855957,-0.030944824,0.0024604797,-0.0015144348,-0.0071640015,-0.021011353,-0.05102539,-0.020141602,-0.0309906,0.029037476,0.011131287,-0.023880005,0.0015888214,0.023162842,-0.012016296,0.029815674,-0.002067566,-0.0026836395,-0.006439209,-0.012519836,0.019500732,-0.005077362,-0.0066833496,-0.015792847,0.011779785,-0.012390137,-0.029541016,0.013053894,-0.029434204,-0.023406982,-0.006980896,0.0011415482,0.037719727,-0.024841309,0.024368286,-0.009124756,-0.008850098,0.003944397,0.013175964,0.022857666,-0.0211792,0.0035152435,-0.009819031,0.0029659271,-0.0048675537,0.025802612,0.022201538,0.021209717,0.009536743,0.01574707,-0.016708374,0.0031528473,-0.02670288,-0.0013980865,0.012649536,0.002368927,-0.027511597,-0.003856659,0.005241394,0.0121536255,-0.02394104,-0.009788513,-0.011138916,-0.024749756,-0.022949219,-0.018371582,0.037261963,0.022232056,0.010253906,-0.023117065,0.014984131,-0.007331848,0.040802002,-0.020339966,0.0026779175,-0.018447876,0.009552002,0.025909424,0.023651123,-0.057556152,-0.024597168,0.0107803345,0.024429321,-0.03237915,-0.017349243,-0.013290405,-0.009033203,0.010734558,-0.014442444,-0.004787445,-0.025421143,-0.0003130436,-0.011276245,0.012481689,0.007106781,0.0121536255,0.026229858,-0.03677368,-0.008460999,0.008811951,-0.03829956,0.041503906,0.0105896,-0.023361206,-0.042144775,-0.0045166016,0.029907227,0.009140015,-0.009429932,-0.037322998,-0.012542725,-0.03656006,-0.057556152,0.012367249,-0.010253906,0.013542175,0.0035591125,0.00869751,-0.06298828,-0.0118255615,-0.049468994,-0.025665283,-0.011398315,-0.029037476,0.027999878,0.026306152,0.03652954,-0.001578331,-0.043670654,-0.010147095,-0.008476257,0.009597778,-0.00046110153,0.05026245,0.03173828,-0.017181396,-0.021591187,0.003452301,-0.014793396,0.002632141,-0.013305664,-0.025543213,-0.061584473,0.0335083,-0.004005432,0.02015686,-0.019943237,-0.0075912476,0.044403076,0.0036296844,0.015235901,0.007621765,0.0052223206,-0.0030670166,0.023101807,-0.034698486,-0.0051078796,-0.033203125,0.025909424,-0.044281006,0.01033783,-0.016586304,0.03201294,-0.01411438,-0.004753113,0.007408142,-0.043670654,-0.00077342987,-0.040283203,-0.04171753,-0.046203613,0.016067505,0.0002746582,-0.0064964294,-0.020141602,0.0256958,-0.026763916,-0.0881958,-0.0206604,0.056549072,-0.010604858,0.0010700226,-0.0052375793,0.010169983,0.01713562,-0.021636963,-0.015731812,-0.01940918,-0.009208679,0.007675171,-0.020492554,0.037475586,0.00365448,-0.017227173,0.007282257,-0.0004580021,0.023117065,-0.045288086,0.03781128,0.006778717,-0.017074585,-0.0041275024,-0.018951416,-0.0390625,-0.011009216,0.022232056,-0.058624268,0.026351929,-0.003255844,0.011650085,0.016601562,0.03286743,0.046691895,-0.031143188,-0.005710602,0.027801514,0.018692017,0.05316162,-0.008201599,0.003660202,-0.006252289,0.0062789917,-0.027069092,-0.028274536,0.019485474,-0.049102783,-0.027801514,0.0043144226,-0.0046424866,-0.024307251,0.0072250366,0.025177002,0.014076233,0.0027484894,-0.000895977,-0.026153564,0.009727478,-0.022705078,0.02128601,0.027145386,-0.008270264,0.005050659,0.03289795,0.034088135,0.010444641,0.016021729,-0.020385742,-0.013710022,0.028961182,0.0045700073,-0.0042037964,0.042663574,0.01461792,0.015068054,0.017562866,0.032440186,-0.024230957,-0.040893555,-0.0077667236,0.013404846,-0.012031555,-0.022628784,-0.031433105,0.01309967,0.0045776367,-0.016342163,-0.008117676,-0.0036373138,-0.021469116,-0.009971619,-0.02772522,-0.015335083,0.024734497,-0.011245728,-0.024429321,0.029006958,-0.00069618225,0.01789856,0.020614624,-0.02909851,0.0056419373,0.03778076,-0.0109939575,0.007904053,0.0065574646,-0.0079422,-0.0025787354,0.021255493,-0.020233154,-0.017608643,0.03503418,-0.013557434,0.02053833,-0.008415222,0.030044556,0.0046081543,0.005836487,0.024261475,0.021652222,-0.007144928,0.03656006,-0.04208374,0.007888794,0.014427185,0.01612854,-0.01108551,-0.0039100647,-0.017349243,0.025344849,0.010887146,-0.0039749146,0.041931152,-0.028518677,0.04949951,-0.04434204,-0.061340332,-0.01914978,-0.010375977,0.005771637,-0.0011329651,-0.013214111,-0.022567749,0.013038635,-0.018493652,0.012962341,-0.0076026917,0.0074043274,0.029205322,-0.010131836,0.0317688,0.009361267,0.010177612,-0.042266846,-0.02758789,0.024398804,-0.0109939575,0.049224854,0.021987915,0.014526367,0.022842407,0.03503418,0.014587402,-0.019363403,-0.03729248,-0.0058059692,-0.042755127,0.040618896,-0.020401001,0.06604004,0.031951904,0.03741455,0.03918457,0.037384033,0.04107666,-0.0013504028,0.0340271,-0.009086609,-0.001704216,-0.014915466,0.0045394897,-0.03692627,0.025482178,-0.028579712,0.00008702278,0.0030460358,0.022491455,-0.023513794,0.021652222,0.0345459,0.021835327,-0.017150879,0.027267456,-0.019577026,0.0019550323,-0.017623901,-0.018585205,0.026031494,-0.0037708282,0.019485474,0.019439697,0.012519836,0.0045547485,-0.014099121,-0.023727417,-0.004005432,0.016708374,0.03866577,-0.014312744,-0.028884888,0.0047340393,-0.0031375885,-0.009933472,-0.01914978,-0.0025901794,0.010116577,0.018508911,0.023803711,0.0011196136,-0.023361206,-0.02166748,0.040771484,-0.00274086,-0.023208618,0.036102295,0.007659912,-0.036468506,0.0067214966,0.018112183,0.018554688,-0.010192871,-0.024002075,-0.0052223206,0.023147583,-0.015930176,0.01235199,0.008392334,0.013458252,-0.0054397583,-0.008422852,-0.0057525635,-0.02532959,0.018234253,0.0011510849,-0.011795044,0.03866577,0.009674072,-0.00005722046,0.03805542,0.011940002,0.013244629,-0.07305908,0.007068634,0.02558899,0.026123047,-0.008872986,0.03086853,0.03375244,-0.030212402,0.036590576,0.021499634,-0.007369995,-0.043670654,-0.023757935,0.0058555603,-0.0075416565,0.0052719116,0.037872314,-0.038513184,-0.014328003,-0.009391785,0.009437561,0.006664276,0.008987427,0.03378296,-0.03652954,0.018417358,0.008049011,-0.019699097,-0.007873535,0.013999939,-0.023361206,-0.0048980713,-0.008651733,-0.031951904,-0.023971558,0.0067596436,0.013679504,-0.019821167,-0.025772095,-0.009239197,-0.001613617,0.0025997162,0.048614502,0.02947998,0.017974854,0.014732361,-0.048919678,-0.016647339,0.030700684,-0.028503418,-0.013214111,-0.044921875,0.009170532,0.000103235245,-0.029937744,0.006969452,-0.0008172989,-0.0079574585,-0.033203125,-0.0060577393,0.009429932,0.010124207,0.012878418,-0.02670288,-0.016464233,-0.0006251335,0.015640259,-0.002231598,0.0109939575,-0.04598999,0.03314209,-0.0501709,0.024002075,0.028671265,0.00121212,0.0335083,0.03262329,-0.029815674,-0.015106201,-0.008834839,0.04598999,-0.01398468,-0.010055542,-0.031051636,0.016601562,-0.014190674,-0.038146973,-0.02519226,-0.015716553,-0.047668457,0.0012741089,0.024627686,0.003189087,0.023101807,0.04159546,0.01625061,-0.022201538,0.055877686,-0.018508911,0.004180908,0.01966858,0.009666443,0.043548584,-0.01448822,0.05255127,0.02204895,-0.0016040802,-0.029312134,0.008079529,-0.00001090765,-0.018569946,0.015274048,-0.0025501251,-0.05328369,0.037139893,-0.008094788,0.028305054,0.03918457,0.0105896,-0.004486084,-0.015716553,-0.015068054,-0.010810852,-0.0027217865,0.025283813,0.006980896,-0.030212402,-0.01335144,-0.008483887,-0.00466156,0.017669678,0.021316528,-0.012771606,0.028808594,0.0075912476,0.03152466,-0.021987915,-0.0054969788,0.036468506,0.02583313,-0.053833008,0.005214691,0.0008010864,0.03375244,-0.033599854,0.023590088,0.05734253,-0.01020813,0.007320404,0.03189087,0.017044067,0.003124237,-0.0118255615,0.026657104,0.041534424,0.010108948,0.009513855,0.013076782,0.0032405853,0.0025844574,-0.0009331703,0.02142334,0.008705139,-0.000023782253,0.0007481575,0.0009880066,0.015083313,-0.010108948,-0.021697998,-0.016052246,-0.035491943,-0.024841309,0.009429932,0.024749756,0.0037460327,0.01928711,0.031921387,0.0004503727,0.009429932,0.022125244,0.03475952,-0.029006958,-0.015945435,-0.017044067,0.0073661804,-0.013908386,0.019134521,0.0236969,-0.03744507,-0.021316528,0.01727295,-0.027999878,0.0060577393,-0.023239136,-0.013389587,0.030273438,-0.0048332214,0.027069092,0.006095886,0.005470276,0.019638062,-0.027114868,0.0017824173,0.016296387,0.012771606,0.00844574,0.026687622,-0.007534027,-0.027572632,0.010414124,-0.017730713,0.0066452026,0.003534317,-0.0085372925,0.013710022,-0.03149414,0.03729248,0.002626419,0.027267456,-0.0061302185,-0.012527466,-0.0062408447,0.04257202,0.03353882,-0.038024902,-0.012168884,0.0027618408,0.025726318,0.024795532,0.022354126,-0.0068855286,0.04827881,-0.0039520264,-0.02658081,-0.008430481,0.019927979,0.0030384064,-0.016220093,0.032104492,-0.036621094,-0.012550354,0.03012085,0.012428284,-0.01991272,-0.022140503,-0.025466919,0.006587982,-0.0070991516,0.021469116,0.024612427,0.027191162,-0.023712158,-0.0040626526,0.039489746,-0.0021152496,-0.008628845,0.00027441978,0.0047950745,-0.008888245,-0.018188477,0.005115509,-0.012306213,0.013519287,-0.036712646,0.02406311,0.0045928955,0.014778137,0.003967285,-0.014450073,0.018371582,-0.0018587112,0.0030784607,-0.002773285,0.01713562,-0.02230835,-0.0070228577,-0.034179688,0.02178955,-0.01638794,0.054138184,-0.009735107,0.02368164,0.0011701584,-0.009254456,0.0109939575,-0.026428223,-0.032836914,-0.021957397,-0.019058228,-0.031311035,0.03125,0.015396118,0.003501892,0.0007505417,0.0076179504,-0.039276123,0.009338379,0.0087890625,-0.002866745,-0.0060195923,0.0058174133,0.013282776,0.0060195923,-0.06378174,0.024673462,-0.004722595,-0.0041885376,-0.024658203,0.006778717,-0.018234253,0.03729248,0.024246216,0.022033691,-0.04232788,0.027435303,0.026565552,0.016983032,-0.0018033981,0.018096924,-0.0047035217,-0.022064209,-0.026412964,0.015388489,-0.008522034,-0.003484726,-0.023651123,-0.021148682,0.002199173,-0.03152466,0.00049972534,0.034088135,-0.019058228,-0.021148682,0.0076789856,-0.017730713,0.020950317,0.0046920776,0.012809753,-0.017364502,0.031021118,0.002948761,-0.038146973,0.005382538,0.023910522,0.023132324,-0.005947113,0.0008049011,0.016143799,0.013366699,-0.0395813,-0.007980347,-0.040771484,-0.029327393,-0.015945435,0.00038552284,0.022155762,0.018203735,-0.0074157715,-0.015586853,0.0011978149,0.020523071,0.029754639,0.013923645,-0.022216797,-0.005756378,0.03277588,0.02961731,-0.013809204,0.023635864,-0.014984131,0.003856659,0.00724411,-0.0015554428,0.010192871,-0.020568848,0.014503479,-0.017852783,-0.0071144104,-0.02355957,0.014076233,0.018859863,-0.0129776,-0.014877319,0.0059165955,0.011932373,0.025817871,-0.043518066,-0.027420044,0.0013303757,-0.016921997,-0.019180298,0.002752304,0.0041007996,0.01499176,-0.022537231,0.024978638,-0.021621704,-0.039123535,0.030471802,-0.018112183,-0.021713257,-0.004070282,0.05444336,-0.008285522,-0.0067863464,-0.00447464,-0.023971558,-0.04333496,-0.01448822,0.014404297,-0.013710022,0.014831543,0.042877197,-0.017929077,0.022476196,-0.014442444,0.010848999,0.03604126,-0.0001269579,0.024765015,0.013305664,0.054626465,0.009422302,-0.022277832,-0.01940918,0.0051116943,-0.013206482,0.027191162,-0.012229919,-0.015060425,-0.028427124,0.0038909912,0.008506775,0.00096940994,0.042510986,-0.0062789917,-0.012664795,0.010253906,-0.031707764,0.028930664,-0.030166626,0.005859375,0.05230713,0.021347046,0.024337769,-0.038208008,0.009552002,0.060546875,0.02835083,-0.0077171326,-0.048553467,-0.029632568,0.034362793,0.008911133,-0.025985718,-0.0042648315,-0.0019569397,-0.026931763,-0.02067566,-0.017868042,0.0008120537,-0.024963379,0.017684937,-0.012619019,-0.019226074,0.006652832,0.011161804,0.017303467,-0.0099105835,0.019561768,0.0043678284,0.015777588,0.009086609,-0.004749298,0.008338928,0.011680603,-0.032409668,0.025436401,0.0060768127,-0.010391235,-0.011871338,0.0020427704,-0.0037708282,-0.018188477,-0.030700684,-0.0049362183],"createdAt":"2026-04-18T18:31:16.727Z","updatedAt":"2026-04-23T00:30:50.718Z","lastSeenAt":"2026-04-23T00:30:50.718Z","tsv":"'/mint':55,137 '000':36 '0x70da5f2a851fb936eff8207f2733b0914cc44b7d':104 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':90 '10':35 '40.2':70 '402':113 '402 protocol NFT' '60':98 'Base NFT' 'NFT mint' 'USDC mint' 'accept':56 'addit':133 'address':81 'also':157 'api':134 'base':9,22,49,92 'base-network' 'beyond':136 'call':116 'caller':78 'challeng':84,114 'collect':7,20,39,155 'contract':89 'credenti':119 'describ':31,145 'doc':129 'document':120 'endpoint':53,106,135 'entir':41 'erc721' 'first':34 'get':58 'header':64 'host':28 'json':143 'link':149,164 'list':158 'live':108 'maximum':95 'minim':122 'mint':1,14,40,72 'network':50 'nft':3,16,38,74 'nft-minting' 'object':144 'on-chain mint' 'openapi':126 'page':130 'payment':12,25,45,63,68,86,101,118 'piec':37 'project':147 'protocol':13,26,46 'provid':163 'recipi':102 'request':59 'return':76,110,141 'root':139 'second':99 'singl':52 'spec':127 'specifi':85 'standard':112 'success':67 'timeout':96 'upon':66 'url':140 'usdc':71,88 'usdc-payment' 'user':80 'valid':153 'via':10,23 'without':117 'x402':11,24,44,62,83 'x402 NFT' 'x402-payment' 'x402scan':151,160 'x721':6,19 'x721.dev':27","prices":[{"id":"73909ec4-c495-487a-8f57-1972d6311216","listingId":"fdf8b181-3e17-4955-91c9-3f8e03d0d953","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"40200000","chain":"base","payTo":"0x70DA5f2A851FB936eFF8207f2733b0914cC44B7D","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x70DA5f2A851FB936eFF8207f2733b0914cC44B7D","scheme":"exact","network":"base","mimeType":"","resource":"https://x721.dev/mint","description":"Mint the first NFT by x402","outputSchema":{"input":{"type":"http","method":"GET"},"output":{"user":{"type":"string","description":"user address"}}},"maxAmountRequired":"40200000","maxTimeoutSeconds":60}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":60},"createdAt":"2026-04-18T18:31:16.727Z"}],"sources":[{"listingId":"fdf8b181-3e17-4955-91c9-3f8e03d0d953","source":"x402_bazaar","sourceId":"https://x721.dev/mint","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:16.727Z","lastSeenAt":"2026-04-23T00:30:50.718Z"}],"details":{"listingId":"fdf8b181-3e17-4955-91c9-3f8e03d0d953","quickStartSnippet":"curl -X GET https://x721.dev/mint \\\n  -H \"X-PAYMENT: <x402_payment_header>\"","exampleRequest":null,"exampleResponse":{"user":"0xYourAddressHere"},"schema":{"input":{"type":"http","method":"GET"},"output":{"user":{"type":"string","description":"user address"}}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"x721.dev describes itself as the first 10,000 NFT collection minted using the 402 protocol","source_url":"https://x721.dev"},{"claim":"Minting costs 40.2 USDC on the Base network","source_url":"https://x721.dev"},{"claim":"The endpoint returns a 402 challenge requiring USDC payment to 0x70DA5f2A851FB936eFF8207f2733b0914cC44B7D","source_url":"https://x721.dev/mint"},{"claim":"Compatible with x402scan validation schema","source_url":"https://x721.dev"}],"useCases":["Programmatically mint an NFT from the x721 collection by paying 40.2 USDC via x402","Demonstrate x402 protocol integration for NFT minting workflows","Agent-driven NFT acquisition on the Base network"],"bestFor":["Developers experimenting with x402 payment-gated endpoints","AI agents that need to mint NFTs autonomously on Base","Collectors interested in the first x402-minted NFT collection"],"notFor":["Users looking for free or low-cost NFT minting (costs 40.2 USDC per mint)","Applications requiring rich metadata or customizable NFT parameters","Production systems needing detailed API documentation or SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:12.288Z"},"updatedAt":"2026-04-23T00:30:50.718Z"}}