{"id":"c778d73f-5946-441d-ae6c-3e7efc36442b","shortId":"4kyR2R","kind":"x402","title":"x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC — no API keys required.","tagline":"x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC — no API keys required.","description":"This endpoint at lowpaymentfee.com provides premium API access to NFT data (specifically the resource at `/api/v1/nfts/100`). It is part of a broader suite of x402-protocol pay-per-call APIs hosted on the same domain, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform share the same pricing model: $0.02 per request, settled in USDC on the Base network.\n\nThe endpoint uses the x402 payment protocol (version 1) with the \"exact\" scheme. Callers send a POST request and must include an `X-PAYMENT` header containing a valid payment proof. The payment is made in USDC (contract `0x8335…2913` on Base) to address `0x1A2B…85F3`, with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The response MIME type is `application/json`. No API keys, rate limits, or upfront commitments are required — access is purely pay-per-request.\n\nDocumentation is minimal: the landing page lists available endpoints and pricing, but there is no OpenAPI spec, no request/response schema documentation, and no usage examples. The specific data returned by `/api/v1/nfts/100` (e.g., NFT metadata, ownership info, or collection details) is not documented. The endpoint is confirmed live via a valid 402 challenge response.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-base","nft-data","no-api-key","json-response"],"categories":["web3","nft","data"],"synonyms":["NFT API","NFT metadata","pay-per-call API","x402 endpoint","USDC micropayment API","Base network API","NFT data feed","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available — request and response formats are unknown","The specific data returned by /api/v1/nfts/100 is undocumented; 'Premium API Access' is the only description","No examples, guides, or README content found (pages behind wallet connect gate)","The broader platform lists many endpoints but none have detailed docs"],"endpointUrl":"https://lowpaymentfee.com/api/v1/nfts/100","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/100","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no usage examples, and no description of what data `/api/v1/nfts/100` actually returns. The listing is essentially a stub with verified 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":"2026-04-21T23:24:01.108Z","embedding":[-0.023712158,-0.015068054,0.039978027,0.002002716,0.02973938,-0.03616333,-0.012512207,0.02255249,0.035827637,-0.07293701,0.033233643,-0.022537231,-0.051605225,-0.050689697,-0.03265381,-0.0012950897,-0.03164673,-0.0014705658,-0.03744507,0.03074646,0.04626465,-0.00447464,-0.025787354,0.025115967,-0.008087158,-0.0121536255,-0.007534027,0.006866455,-0.00017035007,-0.032043457,0.015220642,-0.025558472,-0.009147644,0.0034389496,-0.017349243,-0.0064086914,-0.0042266846,0.024642944,0.011024475,-0.014930725,-0.0014877319,-0.05038452,0.017150879,0.007675171,-0.03967285,-0.0066070557,-0.0020771027,-0.039001465,-0.02178955,0.00969696,-0.02973938,-0.0158844,-0.034576416,0.006954193,0.0067596436,0.04043579,-0.009986877,-0.012191772,0.013626099,0.012779236,0.003932953,-0.060180664,0.0077171326,0.003271103,0.010673523,0.04650879,-0.010116577,0.04537964,-0.0019683838,0.08709717,0.03164673,0.058166504,0.020111084,0.0071105957,0.01171875,-0.025604248,-0.009803772,0.0541687,-0.015853882,-0.03237915,-0.016433716,-0.012763977,-0.048706055,-0.020599365,-0.020431519,-0.057861328,-0.014762878,0.02218628,-0.031097412,0.041748047,-0.08068848,-0.008987427,-0.02168274,0.0062294006,-0.02116394,-0.0025997162,-0.020492554,0.014602661,0.010848999,0.011482239,-0.01374054,-0.022476196,0.020706177,0.007144928,0.059661865,0.056030273,0.01663208,0.018951416,-0.008323669,-0.010314941,-0.019042969,0.010665894,-0.0021133423,-0.013412476,0.009536743,0.008163452,-0.039123535,0.034454346,-0.009117126,0.02798462,-0.048828125,0.053863525,0.015586853,0.00049066544,0.0021533966,-0.033935547,-0.02973938,0.0085372925,-0.0032234192,-0.0009431839,0.031951904,-0.00024330616,0.025802612,-0.01953125,-0.035583496,0.0107421875,-0.03213501,-0.023071289,-0.053497314,0.001045227,0.03250122,-0.032165527,0.028320312,0.032318115,-0.08996582,-0.0023460388,-0.035980225,0.031677246,-0.024642944,0.0077819824,0.0028533936,0.031204224,-0.0009703636,-0.019073486,-0.013412476,-0.030593872,-0.0008587837,0.022369385,-0.0044670105,0.047698975,-0.004016876,0.031097412,0.019546509,0.0070610046,0.031341553,0.05709839,-0.01448822,-0.089538574,-0.07434082,-0.0090789795,-0.0030841827,-0.017547607,-0.019042969,0.0074920654,-0.003376007,-0.06616211,-0.017852783,-0.0012454987,0.01876831,-0.03540039,-0.027389526,-0.05142212,0.0025463104,0.002937317,-0.05508423,-0.008926392,-0.027618408,0.06011963,0.009094238,0.02243042,0.013519287,-0.0012683868,0.037506104,0.037139893,-0.023635864,-0.03112793,0.014389038,-0.02520752,0.039215088,-0.0076179504,0.03161621,-0.008308411,0.030517578,0.06573486,0.0087890625,-0.020080566,-0.0003387928,-0.057800293,-0.05255127,-0.032043457,0.010154724,0.02746582,-0.024017334,0.011024475,-0.042510986,-0.027633667,0.012275696,0.016784668,0.020584106,0.06756592,-0.0034160614,-0.0017728806,0.02281189,0.02355957,-0.04928589,0.03338623,0.02607727,0.0071258545,-0.013702393,-0.038085938,0.019195557,0.027359009,-0.01852417,0.015777588,-0.04647827,0.0050697327,-0.009536743,-0.020248413,0.00919342,-0.0065612793,-0.027038574,-0.04510498,-0.01524353,0.02960205,-0.0007557869,-0.031799316,-0.041229248,-0.074401855,0.032928467,0.055877686,0.024856567,0.009994507,-0.0008330345,-0.044921875,-0.007873535,-0.0869751,0.049682617,0.083740234,-0.018936157,-0.0048446655,0.038848877,-0.019699097,-0.0440979,-0.009887695,-0.0065307617,-0.027404785,-0.016159058,0.009490967,-0.040008545,0.015144348,0.022872925,0.023956299,0.04800415,-0.0357666,-0.05886841,0.002544403,-0.003479004,0.0020713806,-0.028625488,-0.026885986,0.007598877,0.013793945,0.03945923,0.0065994263,0.0037574768,-0.008903503,0.014007568,-0.0021076202,0.005458832,-0.01940918,-0.023117065,0.020904541,0.0024261475,-0.043304443,0.0074272156,-0.014503479,0.058654785,-0.04147339,0.0368042,-0.024536133,0.0025253296,0.035583496,0.0025119781,-0.050842285,-0.0027828217,0.018859863,0.023117065,0.052093506,0.011512756,-0.014350891,-0.0043792725,0.07080078,-0.03842163,-0.0072898865,0.012084961,0.046875,0.044921875,0.012718201,-0.051940918,-0.03366089,-0.010574341,-0.040985107,0.040893555,-0.022750854,0.010917664,-0.009468079,0.014778137,-0.020095825,0.0028266907,-0.031021118,0.017532349,-0.005958557,0.0034236908,-0.009086609,-0.007194519,0.015548706,0.020095825,-0.024765015,0.001121521,0.03643799,0.035583496,-0.01977539,-0.034698486,-0.031463623,-0.01651001,0.006668091,-0.005718231,0.031921387,0.0014543533,0.03552246,-0.041748047,0.0015192032,0.019348145,0.021743774,0.03955078,0.008049011,-0.008674622,-0.06854248,-0.04348755,-0.03048706,-0.054016113,0.037872314,0.02986145,0.0037899017,0.04159546,0.0060653687,-0.020217896,-0.034118652,0.02923584,-0.0635376,-0.01272583,0.052246094,-0.013717651,-0.03302002,0.03894043,0.010353088,0.0284729,0.030914307,0.03353882,0.0067634583,0.06109619,0.035003662,0.009765625,0.003370285,0.028289795,0.03152466,-0.004722595,-0.025939941,-0.028060913,-0.0236969,0.03048706,-0.02935791,-0.037384033,-0.062347412,0.056274414,0.030639648,0.088256836,0.016586304,0.0039901733,0.052886963,-0.0023975372,0.0140686035,-0.025238037,-0.032348633,-0.04336548,-0.027709961,0.022918701,0.010658264,-0.000647068,-0.034698486,0.016616821,0.01663208,0.017471313,-0.021865845,0.05895996,0.007484436,-0.014030457,0.023956299,-0.003578186,0.038208008,0.060821533,-0.040863037,0.030410767,0.012870789,-0.043029785,-0.0035552979,0.0121154785,-0.00019288063,-0.018966675,-0.06677246,-0.0345459,-0.0050964355,-0.009796143,-0.03878784,-0.0047569275,-0.0062179565,0.037200928,0.03466797,-0.0062294006,-0.011993408,0.010749817,-0.013214111,-0.06896973,-0.0077056885,-0.049102783,-0.0041389465,0.02796936,-0.007041931,-0.003255844,-0.0049057007,0.005706787,0.007965088,0.034820557,-0.0061302185,0.0011062622,-0.041534424,0.009887695,-0.006965637,0.022628784,0.009773254,0.02229309,0.028640747,0.032836914,0.039978027,0.01890564,-0.027175903,-0.054260254,0.035095215,-0.019805908,-0.00061511993,0.02218628,-0.023956299,0.0034866333,-0.015205383,-0.010269165,-0.016052246,0.008644104,-0.021194458,0.0061798096,0.034820557,-0.02748108,-0.026168823,-0.06323242,-0.030822754,0.007850647,0.059265137,0.041168213,0.0037002563,-0.025436401,-0.018463135,0.014945984,-0.003818512,0.025939941,-0.0134887695,-0.012199402,-0.015197754,-0.03338623,-0.0061836243,-0.0141067505,0.02482605,-0.018539429,0.0021762848,0.032348633,0.016220093,0.0065612793,0.004322052,-0.005504608,0.024810791,-0.019470215,0.022415161,0.0026626587,0.043060303,0.009002686,-0.0050582886,-0.026733398,0.047332764,-0.00016725063,0.041748047,-0.05734253,0.0020484924,-0.00374794,0.019546509,0.009811401,-0.03048706,0.005645752,-0.0050697327,-0.030548096,-0.079589844,0.05493164,-0.0009717941,0.025772095,0.009849548,0.007762909,0.033325195,-0.0040626526,-0.007320404,0.028320312,-0.026733398,-0.020645142,-0.02998352,-0.023635864,-0.028289795,-0.010101318,-0.01889038,0.02381897,-0.010620117,0.007774353,-0.0067596436,-0.03161621,0.012252808,0.002040863,-0.012199402,0.033599854,0.011680603,0.015991211,0.06414795,0.008476257,-0.03567505,0.022064209,0.011489868,0.0046844482,-0.0062713623,0.04269409,0.031921387,0.0064735413,-0.001373291,-0.0038204193,-0.005065918,-0.026473999,-0.013755798,0.0068206787,0.018951416,0.011810303,-0.040252686,0.008369446,0.012786865,-0.03527832,-0.012931824,0.004142761,0.028930664,-0.036499023,0.012130737,0.025299072,0.051849365,-0.027770996,0.003458023,0.006549835,0.03427124,0.01889038,-0.0019454956,-0.0047912598,0.008392334,-0.011314392,0.0047454834,0.010803223,-0.022842407,0.010131836,0.0065689087,0.02015686,0.02659607,0.012809753,-0.01826477,-0.034454346,0.0029792786,0.001953125,-0.029312134,0.036193848,0.022750854,0.030044556,-0.0053977966,0.018218994,0.012008667,-0.014831543,-0.027862549,0.0001193881,0.031402588,-0.013290405,0.0014162064,-0.0018587112,0.017868042,0.022506714,-0.057861328,-0.006160736,0.016021729,0.016220093,-0.02268982,-0.041290283,-0.028198242,-0.030670166,0.017730713,0.011161804,-0.0015268326,0.037384033,-0.0013608932,-0.008583069,0.0135269165,0.01171875,-0.01991272,-0.011405945,-0.040252686,-0.020141602,-0.0096206665,0.0020923615,-0.010292053,0.012748718,-0.041046143,-0.031021118,0.00019836426,-0.031097412,-0.011024475,0.00014030933,-0.007972717,0.027282715,-0.01838684,0.022644043,-0.027313232,-0.035003662,-0.0037517548,0.0003209114,0.03161621,-0.03414917,0.025360107,-0.0101623535,0.011184692,-0.011581421,0.004398346,0.01007843,0.0385437,0.008232117,0.03527832,-0.029815674,0.035614014,-0.03387451,0.018615723,0.0046424866,-0.03125,-0.0034332275,-0.02519226,-0.017959595,0.048339844,-0.024902344,-0.00034356117,-0.018447876,-0.042633057,-0.013290405,-0.052886963,0.013717651,0.023208618,0.03829956,-0.021270752,0.0057144165,0.006126404,0.010978699,-0.017654419,0.0068473816,-0.016906738,0.017700195,0.021148682,0.006664276,-0.02998352,-0.029205322,-0.006664276,0.0038776398,-0.05407715,-0.031219482,-0.0132369995,-0.0054893494,-0.009407043,-0.003232956,-0.026626587,-0.041900635,0.015220642,-0.027740479,0.024658203,-0.0036716461,-0.0019140244,0.020141602,-0.013221741,0.0030231476,0.02470398,-0.016815186,0.03326416,0.014427185,-0.0009937286,-0.039794922,0.0016517639,0.035583496,0.021148682,-0.0116119385,-0.026123047,-0.0019435883,-0.03225708,-0.06524658,-0.007621765,-0.0029678345,0.0046157837,0.009223938,-0.013427734,-0.044769287,-0.003025055,-0.031021118,0.014122009,0.014045715,0.0061149597,0.01109314,-0.0008907318,0.008125305,-0.026657104,-0.015167236,-0.033569336,0.0042152405,0.009628296,-0.0051002502,0.030471802,0.032714844,-0.009559631,-0.014198303,-0.010620117,-0.0032138824,0.008811951,-0.01612854,-0.009117126,-0.015007019,0.021209717,0.0017023087,-0.011100769,-0.028427124,0.00039744377,0.06756592,0.00091409683,-0.014793396,0.0048065186,-0.008117676,0.01210022,0.038513184,-0.034973145,-0.005466461,-0.032348633,0.031921387,-0.021972656,0.01096344,-0.009178162,0.025787354,-0.01878357,-0.046722412,-0.001282692,-0.01008606,-0.0084991455,-0.05331421,-0.025421143,-0.060424805,0.012512207,-0.02519226,-0.020126343,-0.011383057,0.022094727,-0.028823853,-0.07904053,-0.0074386597,0.062927246,0.009849548,0.020217896,-0.010383606,0.033477783,0.028167725,-0.022994995,-0.004322052,0.013175964,-0.021011353,-0.011230469,-0.021011353,0.030258179,0.0030097961,-0.012542725,0.02116394,0.017196655,0.02758789,-0.015701294,0.02758789,-0.023254395,-0.006839752,-0.010528564,0.009887695,-0.016815186,-0.0020503998,0.035064697,-0.04937744,0.031829834,0.0065689087,0.013389587,0.00806427,0.02029419,0.039978027,-0.045837402,-0.018920898,0.039855957,0.01914978,0.048675537,-0.028579712,0.026016235,0.0071983337,-0.005760193,0.003917694,-0.023132324,-0.024856567,-0.048065186,-0.02708435,0.019760132,0.006996155,-0.008636475,-0.0116119385,0.018707275,0.013618469,0.0060768127,0.012130737,-0.025543213,-0.019485474,-0.036224365,0.017059326,0.018081665,0.00086545944,-0.0019664764,0.025253296,0.04220581,0.03152466,0.016571045,-0.018295288,0.005329132,0.020111084,-0.008323669,-0.010391235,0.03277588,0.0069465637,0.030212402,0.02432251,0.008758545,-0.038848877,-0.031921387,-0.019226074,-0.021469116,0.01033783,0.0010881424,-0.0005903244,0.015090942,0.013198853,-0.006134033,-0.02986145,0.0074157715,-0.035003662,-0.02607727,0.0105896,-0.009292603,0.016525269,-0.0023479462,-0.01184082,0.021484375,-0.002450943,0.050567627,-0.0067214966,-0.011436462,0.02935791,0.03112793,0.0071372986,-0.029159546,-0.0026474,-0.02331543,-0.02468872,0.009735107,-0.014602661,0.020217896,0.033843994,-0.012481689,0.004890442,0.007621765,0.028320312,-0.0046691895,0.010482788,0.00995636,0.016052246,-0.025177002,0.045928955,-0.045410156,0.012893677,0.0070991516,0.013679504,-0.009086609,-0.0038394928,-0.029022217,0.023330688,0.0118637085,-0.011871338,0.03475952,-0.01977539,0.035186768,-0.020706177,-0.035095215,0.0033950806,-0.01928711,-0.019897461,0.012260437,-0.0024929047,0.010307312,0.024154663,-0.016326904,0.018600464,-0.009628296,0.012756348,0.0033874512,-0.01676941,-0.009590149,-0.029891968,0.005504608,-0.022842407,-0.029373169,0.013114929,-0.01727295,0.055480957,0.046722412,-0.004787445,0.031921387,0.022415161,0.016586304,-0.035003662,-0.033966064,0.009017944,-0.022445679,0.026367188,-0.014762878,0.06011963,0.04248047,0.022125244,0.050994873,0.016983032,0.03189087,0.013023376,0.008239746,-0.020935059,0.014968872,-0.025283813,0.029968262,-0.014656067,0.043395996,-0.033477783,-0.00079107285,-0.0015058517,0.029663086,-0.016967773,0.015548706,0.054351807,0.02798462,-0.0037460327,0.048736572,0.0053977966,-0.022613525,-0.019119263,-0.014289856,0.05657959,0.014511108,0.04168701,0.04196167,-0.0016145706,0.0016622543,0.010147095,-0.031021118,-0.030212402,0.049102783,0.036468506,-0.009933472,-0.0056495667,-0.0079574585,-0.011299133,-0.052642822,-0.015533447,0.011131287,0.0071792603,0.022842407,-0.011207581,-0.0061187744,-0.017944336,0.012077332,0.015731812,0.0016117096,-0.012649536,0.031021118,0.02468872,-0.007160187,0.026000977,0.0010404587,0.022323608,-0.023605347,-0.027832031,0.022888184,0.033966064,-0.010894775,0.009437561,0.021255493,0.008659363,0.040039062,0.024093628,-0.026473999,-0.01272583,0.023223877,0.02658081,-0.004470825,0.045440674,0.033355713,0.025787354,0.040405273,0.03375244,0.026321411,-0.041748047,0.0064735413,0.0046691895,0.0031585693,0.011444092,0.0020523071,0.02027893,-0.017501831,0.026245117,-0.0017442703,-0.012565613,0.03086853,0.007217407,0.0022792816,-0.0138549805,0.009391785,0.010635376,-0.017074585,-0.0009317398,0.0059318542,-0.010566711,0.019241333,0.016311646,0.03225708,-0.011878967,0.040405273,0.011054993,-0.0121536255,-0.01423645,0.0032024384,-0.041748047,-0.0055732727,-0.005470276,-0.0033435822,-0.04296875,0.020599365,0.035491943,-0.0013113022,0.009765625,-0.0028381348,-0.014198303,-0.008605957,0.028503418,0.022140503,-0.009613037,-0.0107421875,-0.027435303,0.026855469,0.04071045,-0.005569458,-0.008911133,-0.02935791,0.009223938,0.012130737,-0.016326904,-0.005252838,0.0019626617,-0.004146576,-0.04434204,0.01576233,0.028701782,0.019714355,0.046051025,-0.006385803,-0.03439331,-0.0031223297,0.032196045,0.007972717,0.006450653,-0.01512146,0.023361206,-0.027130127,0.053009033,0.041412354,-0.005996704,0.03112793,-0.006038666,-0.01638794,-0.0049095154,-0.004234314,0.027282715,-0.016586304,-0.00044178963,-0.008651733,0.015274048,-0.0033817291,-0.034851074,-0.0046844482,-0.022216797,-0.022781372,-0.017959595,0.01864624,-0.0057640076,0.012046814,0.040161133,0.025115967,-0.016113281,0.05996704,0.0031375885,0.040130615,-0.008842468,-0.0028953552,0.06365967,0.015426636,0.04864502,0.02947998,0.01423645,-0.020706177,0.007572174,0.019561768,0.023727417,0.024536133,0.0066833496,-0.029449463,0.034454346,-0.019592285,0.027053833,0.0011043549,0.00070667267,0.006965637,-0.007762909,-0.0026302338,-0.0045166016,-0.0023517609,0.012802124,0.05038452,-0.038879395,-0.00365448,-0.020736694,-0.014221191,0.02709961,0.008796692,-0.0016450882,0.0061569214,-0.021896362,0.012832642,-0.017608643,-0.017822266,0.0031261444,0.022384644,-0.04019165,0.0031204224,0.0059013367,0.025115967,-0.030792236,0.034423828,0.040985107,0.0052604675,0.014312744,0.033721924,-0.01398468,0.034576416,-0.0033626556,0.02330017,0.034301758,0.0033473969,-0.0073623657,0.012611389,0.009185791,-0.010002136,-0.0011148453,0.022262573,0.0024929047,0.01210022,0.014793396,0.016281128,-0.004573822,0.017913818,-0.013412476,0.0052757263,-0.017593384,-0.010040283,0.009971619,0.0040664673,0.014678955,0.009391785,-0.00083112717,-0.0024642944,0.021774292,0.030792236,0.018432617,-0.04232788,-0.0050964355,0.012329102,0.01537323,-0.017852783,-0.011001587,0.00037765503,-0.044708252,0.0053634644,0.017089844,0.001914978,0.014083862,-0.03475952,-0.015655518,0.035827637,0.0063476562,0.026016235,0.028945923,-0.010574341,0.016616821,-0.004257202,-0.008369446,-0.011566162,-0.013259888,0.01713562,0.026290894,-0.02067566,-0.03274536,0.016052246,-0.00894928,0.00945282,0.017791748,-0.006916046,0.026931763,-0.014373779,0.011886597,0.00699234,0.010253906,-0.023223877,-0.020904541,-0.008323669,0.025634766,0.049224854,-0.013931274,-0.016098022,0.025421143,0.019042969,0.0024604797,0.033935547,0.008384705,0.03161621,0.025268555,-0.013366699,-0.020446777,0.02696228,-0.009841919,-0.021347046,0.015090942,-0.027664185,-0.03086853,0.032318115,0.009742737,-0.009223938,-0.032043457,-0.0015287399,-0.015457153,-0.021591187,0.03225708,-0.0014228821,0.013587952,-0.010986328,-0.00033187866,0.0256958,-0.028945923,-0.034454346,-0.0057296753,-0.0057678223,-0.017166138,-0.05593872,0.008102417,-0.009315491,0.013908386,-0.029205322,-0.0015134811,-0.012359619,0.029083252,-0.0054969788,-0.0048446655,0.007160187,0.017059326,0.006668091,0.006313324,0.027404785,-0.021057129,-0.026275635,-0.01914978,0.025527954,-0.019958496,0.027053833,-0.017074585,0.035217285,0.017471313,-0.006504059,0.0058403015,-0.006752014,-0.019744873,-0.0022583008,-0.031311035,-0.039978027,0.02355957,0.027816772,-0.0051956177,-0.004650116,0.041107178,-0.021087646,-0.015625,0.022842407,0.0413208,0.012527466,0.026046753,-0.0015382767,-0.006549835,-0.023452759,0.013023376,-0.023147583,0.0066452026,-0.0051574707,-0.0069274902,0.009292603,0.012901306,0.008087158,-0.0042648315,-0.010894775,0.026855469,0.026443481,0.004764557,0.03942871,0.015686035,-0.006958008,-0.027404785,-0.019546509,0.011024475,0.029907227,0.012008667,0.009735107,0.0037822723,0.005126953,-0.014175415,0.029373169,0.0074920654,-0.015853882,-0.042022705,-0.014984131,-0.04498291,0.020370483,-0.0055007935,0.01499176,-0.0063934326,0.017166138,-0.011756897,-0.04019165,-0.00844574,0.037353516,0.0077171326,-0.0058059692,-0.012489319,0.00061511993,0.0018281937,-0.03277588,-0.0031700134,-0.04055786,-0.03225708,-0.014587402,-0.010887146,0.016113281,-0.00030064583,-0.0071792603,0.0038871765,-0.0023155212,0.0020256042,-0.0014982224,0.027832031,-0.022003174,0.00333786,0.019866943,0.022491455,-0.019378662,0.0049057007,-0.01651001,0.0001052022,0.026504517,0.0004029274,0.02178955,-0.029907227,0.024810791,0.0025730133,-0.011787415,0.026229858,0.0003604889,0.018829346,-0.016723633,0.0054473877,0.00015711784,0.006023407,0.03845215,-0.020126343,-0.0385437,0.006580353,-0.018127441,-0.016021729,0.0018777847,0.008956909,0.03289795,-0.010986328,0.032928467,-0.018310547,-0.007030487,0.014137268,0.0010490417,-0.028442383,0.00076532364,0.019989014,0.002155304,-0.003452301,0.0006623268,-0.011726379,-0.035369873,-0.019561768,0.009796143,-0.014259338,0.00042796135,0.020721436,0.01625061,0.055541992,0.005832672,0.018005371,0.02746582,0.017837524,0.031402588,0.00014603138,0.04397583,0.005970001,-0.035491943,-0.00844574,0.010551453,-0.027389526,0.012214661,-0.000008106232,-0.009460449,-0.030136108,0.018936157,0.0012378693,0.029556274,0.0076026917,0.0016708374,-0.020553589,-0.0025978088,-0.0390625,0.00592041,-0.03201294,0.017990112,0.045806885,0.01789856,0.00856781,-0.00818634,-0.019012451,0.0413208,0.05154419,-0.005428314,-0.038208008,-0.029327393,0.016357422,0.007865906,-0.0019664764,0.012191772,-0.02973938,0.0039711,-0.004096985,-0.010246277,0.008201599,-0.008956909,0.0053138733,0.004573822,-0.0039634705,-0.0079422,0.027938843,-0.009338379,-0.014839172,0.00091362,-0.0018453598,0.033477783,0.03945923,-0.0018377304,0.0063095093,0.027832031,-0.03643799,0.041015625,-0.0116119385,0.00078868866,-0.0008778572,0.019485474,-0.041046143,-0.011779785,-0.0057296753,-0.0037460327],"createdAt":"2026-04-21T18:32:27.458Z","updatedAt":"2026-04-22T02:32:08.574Z","lastSeenAt":"2026-04-22T02:32:08.574Z","tsv":"'/api/v1/nfts/100':52,218 '0.02':10,28,93,159 '000':155 '0x1a2b':147 '0x8335':141 '1':111 '20':154 '2913':142 '402':238 '6':163 '85f3':148 'Base network API' 'NFT API' 'NFT data feed' 'NFT metadata' 'USDC micropayment API' 'access':44,181 'address':146 'ai/ml':77 'amount':152 'analyt':76 'api':16,34,43,68,172 'application/json':170 'avail':195 'base':8,26,101,144,156 'broader':58 'call':67 'caller':116 'challeng':239 'collect':225 'commit':178 'confirm':233 'contain':129 'contract':140 'data':5,23,47,75,215 'decim':164 'detail':226 'document':188,208,229 'domain':73 'e.g':219 'endpoint':6,24,38,84,104,196,231 'exact':114 'exampl':212 'finance/web3':79 'gate':3,21 'given':160 'header':128 'host':69 'i.e':158 'includ':123 'infer':78 'info':223 'infrastructur':81 'json-response' 'key':17,35,173 'land':192 'limit':175 'list':194 'live':234 'lowpaymentfee' 'lowpaymentfee.com':40 'made':137 'maximum':151 'metadata':221 'mime':167 'minim':190 'model':92 'must':122 'network':102 'nft':4,22,46,220 'nft-data' 'no-api-key' 'openapi':203 'ownership':222 'page':193 'part':55 'pay':9,27,65,185 'pay-per-cal':64 'pay-per-call API' 'pay-per-request':184 'payment':108,127,132,135 'per':11,29,66,94,186 'platform':87 'post':119 'premium':42 'price':91,198 'proof':133 'protocol':63,109 'provid':41 'pure':183 'rate':174 'request':12,30,95,120,187 'request/response':206 'requir':18,36,180 'resourc':50 'respons':166,240 'return':216 'schema':207 'scheme':115 'send':117 'settl':96 'share':88 'span':74 'spec':204 'specif':48,214 'suit':59 'type':168 'unit':157 'upfront':177 'usag':211 'usdc':14,32,98,139,161 'usdc-base' 'use':105 'util':82 'valid':131,237 'version':110 'via':235 'x':126 'x-payment':125 'x402':2,20,62,107 'x402 endpoint' 'x402-gated':1,19 'x402-payment' 'x402-protocol':61","prices":[{"id":"ba16d07a-70a2-415e-801d-01e84e997b54","listingId":"c778d73f-5946-441d-ae6c-3e7efc36442b","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/100","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:27.458Z"}],"sources":[{"listingId":"c778d73f-5946-441d-ae6c-3e7efc36442b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/nfts/100","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:27.458Z","lastSeenAt":"2026-04-22T02:32:08.574Z"}],"details":{"listingId":"c778d73f-5946-441d-ae6c-3e7efc36442b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/nfts/100 \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with x402 version 1, exact scheme, USDC on Base, maxAmountRequired 20000","source_url":"https://lowpaymentfee.com/api/v1/nfts/100"},{"claim":"All endpoints on the platform 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":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/nfts/100"}],"useCases":["Fetching NFT data or metadata on demand without managing API keys","Integrating NFT information into agent workflows with per-call USDC payments","Programmatic access to NFT resources for dashboards or analytics"],"bestFor":["Developers wanting zero-friction, keyless API access to NFT data","AI agents that can settle x402 micropayments on Base","Projects needing low-cost, pay-as-you-go NFT data lookups"],"notFor":["Users who need detailed documentation or OpenAPI specs before integrating","High-volume consumers who need bulk/batch NFT data at discounted rates","Anyone unable to settle USDC payments on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:12:59.353Z"},"updatedAt":"2026-04-22T02:32:08.574Z"}}