{"id":"0430afbb-80f9-4ed7-bf39-4c211b397acc","shortId":"sqxBK8","kind":"x402","title":"x402-gated card-transactions endpoint on Base, pay $0.02 per request in USDC.","tagline":"x402-gated card-transactions endpoint on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com exposes a POST resource at `/api/v1/cards/35/transactions` behind an x402 payment challenge. It is part of a broader platform that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request settled in USDC on the Base network.\n\nThe specific endpoint listed here appears to relate to card transaction data (path segment `/cards/35/transactions`), though the provider's landing page does not document this particular route among its advertised APIs. The x402 challenge confirms the endpoint is live: it returns HTTP 402 with an `exact` payment scheme requiring up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals → $0.02) paid to address 0x1A2B…85F3 with a 300-second timeout.\n\nDocumentation is extremely thin. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples. The endpoint accepts POST requests and returns `application/json`, but the exact request body format and response structure are unknown. Prospective callers should be aware that without documentation, integration requires experimentation or direct contact with the provider.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","card-transactions","post-json"],"categories":["finance","payments"],"synonyms":["card transactions API","payment card data","transaction history","lowpaymentfee","x402 USDC endpoint","Base network API","card transaction lookup"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","This specific endpoint (/api/v1/cards/35/transactions) is not listed among the provider's advertised APIs on the landing page.","No request or response schema is available; integration requires guesswork.","The purpose of 'cards/35' is unclear — it may be a demo or placeholder resource."],"endpointUrl":"https://lowpaymentfee.com/api/v1/cards/35/transactions","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/cards/35/transactions","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation for this specific route — no request schema, no response schema, no examples. The docs pages are empty. The card-transactions path is not listed among the provider's advertised APIs, making its purpose uncertain.","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":"2026-04-19T02:47:40.160Z","embedding":[-0.055603027,-0.04107666,0.051849365,0.0010232925,0.007358551,-0.021728516,-0.012710571,0.034179688,0.06695557,-0.054260254,0.02973938,-0.050598145,-0.057525635,-0.03781128,-0.016555786,0.01222229,0.0017166138,0.015266418,-0.035858154,0.03665161,0.032196045,-0.034484863,-0.015670776,0.028793335,-0.013847351,0.0023231506,-0.008140564,-0.0036735535,-0.017349243,-0.050842285,0.04473877,-0.018371582,-0.012786865,-0.010696411,-0.005256653,0.025512695,-0.0051879883,0.043914795,0.037963867,-0.025436401,0.015899658,-0.06390381,0.0037441254,-0.0022354126,-0.03768921,-0.017089844,0.014167786,-0.03652954,0.010353088,-0.008125305,-0.031921387,-0.011161804,-0.01007843,0.03942871,0.013641357,-0.007507324,0.0029850006,-0.03164673,0.018753052,0.03186035,0.0019893646,-0.05834961,-0.009689331,-0.017181396,0.008171082,0.053649902,-0.02218628,0.06317139,-0.014205933,0.0814209,0.026794434,0.034423828,0.034729004,0.020095825,0.020019531,-0.009208679,-0.017791748,0.043304443,-0.016159058,-0.03793335,-0.017807007,-0.023605347,-0.062683105,-0.014701843,-0.027770996,-0.066589355,-0.015701294,0.0009326935,-0.02381897,0.03164673,-0.077819824,-0.00945282,-0.00573349,0.005886078,-0.027130127,-0.009460449,-0.047180176,-0.01701355,-0.00022411346,0.011550903,0.005214691,-0.044281006,0.048797607,0.0078125,0.045898438,0.012130737,0.020980835,0.030654907,-0.022644043,-0.01625061,-0.02720642,0.019607544,-0.009643555,0.0047454834,0.030044556,0.0063552856,-0.006706238,0.030044556,-0.02859497,0.033477783,-0.04437256,0.040374756,0.00010865927,-0.011711121,0.00945282,-0.040374756,-0.0070266724,-0.0061950684,-0.04434204,-0.01725769,0.03289795,0.0025596619,0.007709503,-0.018249512,-0.0073509216,0.019927979,-0.022354126,-0.008506775,-0.049102783,-0.036224365,0.01360321,-0.026473999,0.0178833,0.056884766,-0.09307861,0.0030708313,-0.027801514,0.020889282,-0.032104492,-0.02659607,0.01134491,0.025527954,-0.002298355,-0.020248413,-0.0064353943,-0.041015625,-0.0023040771,0.031463623,-0.016586304,0.026153564,-0.020477295,0.0050697327,0.029403687,0.01134491,0.023330688,0.032196045,-0.017318726,-0.07080078,-0.07110596,-0.023239136,0.017059326,-0.035736084,-0.049804688,0.0056877136,-0.03857422,-0.059173584,-0.034240723,-0.01828003,-0.019058228,-0.04727173,-0.0037117004,-0.03765869,0.012908936,0.00041556358,-0.05999756,-0.013999939,-0.03479004,0.05065918,0.028182983,0.0090789795,0.010910034,0.020706177,0.057373047,0.0053100586,0.019683838,-0.026519775,0.02659607,-0.022354126,0.04663086,0.013336182,0.016906738,-0.042816162,0.0060424805,0.08258057,0.0009994507,-0.031219482,0.011695862,-0.039794922,-0.038330078,-0.0019311905,0.017059326,-0.0038814545,-0.016555786,0.017959595,-0.02432251,-0.021606445,0.024902344,0.027435303,0.020324707,0.03970337,0.015052795,0.014549255,0.021606445,0.009750366,-0.019012451,0.059692383,0.021942139,0.016708374,-0.02609253,-0.051086426,0.02923584,0.051849365,-0.024032593,-0.004863739,-0.0046463013,0.028289795,-0.01209259,0.010887146,0.0131073,-0.0049819946,-0.02482605,-0.033813477,-0.008041382,0.0055274963,0.011672974,-0.029968262,-0.055389404,-0.07891846,0.06707764,0.04928589,0.02720642,-0.010185242,-0.008621216,-0.03338623,-0.021347046,-0.06488037,0.051513672,0.05819702,-0.021942139,-0.014015198,0.041259766,-0.00843811,-0.028366089,-0.020843506,-0.034179688,-0.03237915,-0.013092041,-0.00041389465,-0.03338623,0.012863159,0.018798828,0.019699097,0.035064697,-0.0090789795,-0.045440674,-0.034362793,-0.015151978,0.020599365,-0.018692017,-0.0036697388,0.0178833,0.029251099,0.020019531,-0.0032577515,-0.002986908,0.004890442,0.009681702,0.0042762756,0.021636963,-0.013824463,-0.037628174,0.021026611,-0.0022621155,-0.048339844,0.0044441223,-0.015609741,0.03970337,-0.047027588,0.03555298,-0.025054932,-0.01411438,0.045684814,-0.016616821,-0.0524292,-0.0004968643,0.015304565,0.048309326,0.054992676,0.008857727,0.005405426,-0.03704834,0.066467285,-0.0005979538,0.004497528,0.02508545,0.020721436,0.018997192,0.0012845993,-0.052947998,-0.06341553,-0.005645752,-0.013038635,0.04788208,-0.021102905,0.041107178,-0.022445679,-0.0013656616,-0.022735596,0.0064201355,-0.032806396,-0.010551453,-0.028289795,-0.0028095245,-0.03491211,-0.029708862,0.011146545,-0.016296387,0.002588272,-0.00082731247,0.06530762,0.006072998,-0.0006284714,-0.008728027,-0.022445679,-0.027389526,0.0024719238,0.017929077,0.022140503,0.019561768,0.03338623,-0.032318115,0.0017538071,0.022918701,-0.000895977,0.020324707,0.020477295,-0.015930176,-0.046783447,-0.03591919,-0.026901245,0.00041389465,0.024627686,-0.00086164474,0.0064430237,0.06896973,0.026748657,-0.018630981,-0.013244629,0.02557373,-0.05682373,-0.015838623,0.022003174,-0.009346008,-0.033050537,0.0041007996,-0.022827148,0.0054512024,0.03970337,0.034179688,0.03741455,0.06768799,0.034423828,0.00945282,0.012306213,0.022872925,0.028869629,-0.012382507,-0.01802063,-0.025680542,-0.03564453,0.016189575,-0.018508911,-0.046081543,-0.061645508,0.049804688,0.036254883,0.086120605,0.021270752,0.0052375793,0.030792236,0.0046043396,-0.0003976822,-0.016204834,-0.029205322,-0.02468872,-0.025909424,0.028839111,-0.002067566,-0.01448822,-0.012054443,0.023422241,0.012275696,0.01663208,-0.023635864,0.054473877,-0.020950317,-0.021102905,0.028671265,0.00894165,0.042114258,0.059387207,-0.03012085,0.015655518,0.000028967857,-0.030914307,0.0030517578,0.023162842,-0.0027122498,-0.00434494,-0.04168701,-0.03277588,0.020309448,0.010139465,-0.050079346,0.018295288,0.012870789,0.0390625,0.008422852,-0.014640808,-0.045074463,0.009750366,-0.009498596,-0.039916992,0.009963989,-0.02861023,0.03555298,0.050598145,-0.032470703,0.028076172,-0.004058838,-0.0002567768,0.015129089,0.0033187866,0.0045204163,-0.007785797,-0.03277588,0.026260376,0.0048561096,0.022537231,0.022094727,0.040130615,0.012367249,0.019134521,0.02218628,0.00349617,-0.012168884,-0.03894043,0.033050537,-0.032043457,-0.012176514,0.027282715,-0.007873535,0.005455017,-0.016647339,-0.023651123,-0.008964539,0.013076782,0.016204834,-0.015472412,0.05517578,-0.0234375,-0.031951904,-0.070617676,-0.02192688,0.02180481,0.05319214,0.0019435883,0.005130768,-0.04360962,0.004486084,0.037750244,0.0037937164,0.009269714,-0.013793945,-0.008850098,0.0058784485,-0.016342163,-0.025497437,0.005420685,0.041412354,-0.0013093948,-0.0093688965,0.02116394,0.017486572,0.010925293,0.0019664764,-0.011169434,0.037597656,-0.012512207,-0.006893158,-0.02545166,0.044891357,0.001619339,-0.04827881,-0.060516357,0.030654907,-0.019805908,0.05029297,-0.023742676,-0.012428284,-0.009765625,0.019973755,0.012924194,-0.014228821,-0.0021305084,0.000041663647,-0.030792236,-0.062561035,0.02810669,0.009635925,0.029891968,0.030639648,0.010940552,0.052490234,-0.010864258,0.00014972687,0.01033783,-0.025894165,-0.030181885,-0.047729492,-0.03213501,-0.023391724,-0.0056610107,-0.03515625,0.020706177,0.0050315857,0.0068855286,-0.00008678436,-0.021713257,0.025131226,0.00076293945,-0.006286621,0.011581421,0.005756378,0.020385742,0.020355225,0.0095825195,-0.054840088,0.015548706,0.0032444,-0.004714966,-0.021377563,0.034332275,0.02859497,-0.017547607,0.0019464493,-0.00030827522,-0.026245117,-0.031982422,-0.019378662,0.009002686,0.027999878,0.011642456,-0.020751953,0.027816772,0.007873535,-0.04220581,-0.049682617,0.012130737,0.03503418,-0.0368042,0.0021743774,0.018661499,0.045074463,-0.015434265,-0.00076532364,0.011695862,0.038208008,0.024612427,-0.008735657,0.0012435913,0.038208008,-0.007671356,0.023468018,-0.008117676,-0.012573242,-0.00007432699,0.004535675,0.012763977,0.011116028,0.0034866333,-0.026184082,-0.020965576,-0.0034179688,0.0042800903,-0.019989014,0.01940918,0.023376465,0.03717041,-0.0072288513,0.01977539,0.023925781,-0.018371582,-0.01424408,0.0022964478,0.019134521,-0.010093689,-0.004714966,0.01210022,0.011383057,0.036956787,-0.06591797,-0.006385803,0.007408142,-0.0018157959,0.0024051666,-0.0692749,-0.03829956,-0.007659912,0.01991272,-0.005508423,0.012329102,0.018814087,0.0021972656,-0.002313614,0.022750854,-0.0022296906,-0.011169434,0.0050964355,-0.055847168,-0.03302002,0.0018968582,0.004421234,-0.0027256012,0.013397217,-0.021316528,-0.025527954,0.012680054,-0.039245605,0.016021729,-0.02166748,0.015411377,0.04336548,-0.016921997,0.015357971,-0.00894928,-0.018341064,-0.005744934,0.017868042,0.027008057,-0.035003662,0.021331787,-0.0340271,0.00012910366,0.003704071,0.021453857,0.036743164,0.020950317,-0.0036315918,0.014259338,-0.029815674,0.030899048,-0.02432251,0.009407043,-0.00075912476,-0.024810791,-0.013168335,-0.021850586,-0.008399963,0.046020508,-0.001914978,-0.013923645,-0.022827148,-0.052886963,-0.0064201355,-0.052886963,0.025360107,0.015136719,0.041809082,-0.031433105,0.012825012,0.0035514832,-0.001288414,0.0020599365,-0.0043563843,-0.010719299,0.023773193,0.02482605,0.00053977966,-0.022003174,-0.012290955,-0.010108948,0.0021514893,-0.0546875,-0.043273926,-0.018493652,0.034332275,0.00045633316,-0.0035324097,-0.032928467,-0.017944336,-0.0028476715,-0.04638672,0.02709961,-0.0048980713,0.025985718,-0.005138397,-0.010253906,-0.006362915,-0.0017633438,-0.009521484,0.03994751,-0.006969452,-0.021118164,-0.041412354,0.0066947937,0.011375427,0.03390503,-0.0074920654,-0.031707764,0.013885498,-0.032043457,-0.042266846,-0.0007658005,-0.010795593,0.000009775162,-0.013023376,-0.014663696,-0.047698975,-0.00466156,-0.03274536,-0.0049743652,0.008163452,0.0052108765,0.0058059692,0.00015199184,0.00047588348,-0.0206604,-0.027694702,-0.02909851,0.019744873,0.009933472,0.013450623,0.014129639,0.06323242,-0.00029873848,-0.028671265,0.0011501312,-0.01197052,0.0141067505,-0.017715454,0.012527466,-0.000117480755,0.01586914,-0.008110046,0.00014185905,-0.037628174,0.013793945,0.06390381,0.021896362,0.01612854,-0.0058670044,-0.00894165,0.021514893,0.036743164,-0.024291992,0.03237915,-0.012031555,0.037322998,-0.013160706,0.011238098,0.02494812,0.024414062,-0.016784668,-0.04562378,0.014450073,0.0020961761,0.0049057007,-0.06896973,-0.03918457,-0.059326172,-0.0034561157,-0.021499634,-0.008338928,-0.00029802322,0.009185791,-0.02420044,-0.08557129,-0.0024909973,0.057434082,0.02444458,0.018814087,-0.020812988,0.02470398,0.029312134,-0.018066406,-0.024139404,0.023391724,-0.040283203,-0.009162903,-0.026016235,0.049987793,-0.014167786,-0.014587402,0.005027771,0.007129669,0.015167236,0.005870819,0.0062561035,-0.021850586,-0.005710602,-0.0056114197,0.012763977,-0.003753662,-0.014419556,0.039855957,-0.04623413,0.04095459,0.0012521744,-0.009559631,0.007385254,0.022659302,0.025772095,-0.03677368,0.0036087036,-0.0009198189,-0.0046424866,0.04260254,-0.020767212,0.054779053,0.016571045,0.019973755,-0.010871887,-0.012413025,-0.016983032,-0.03503418,-0.029281616,0.034301758,0.0079574585,0.0035381317,-0.019989014,-0.00831604,-0.00011885166,0.019424438,0.016418457,-0.011047363,-0.009498596,-0.026947021,0.016357422,0.020431519,0.014053345,0.003156662,0.02394104,0.022750854,0.04321289,-0.008796692,-0.01940918,0.0104599,0.035217285,0.0030956268,-0.0008573532,0.01965332,0.027664185,0.0135650635,0.025482178,0.02204895,-0.042541504,-0.028137207,-0.009925842,-0.0026187897,0.0037212372,0.0025291443,-0.00056409836,0.009544373,0.0029354095,-0.00409317,-0.021514893,-0.0015954971,-0.026016235,-0.03945923,0.008285522,-0.024505615,0.010231018,0.021743774,0.011756897,0.0262146,-0.009399414,0.024627686,0.003458023,-0.005947113,0.039794922,0.018310547,-0.0004222393,-0.011390686,0.013145447,-0.01663208,-0.015914917,0.009757996,-0.002527237,0.014549255,0.02709961,-0.01360321,0.012825012,-0.003932953,0.024276733,0.0029392242,0.008781433,-0.0042915344,0.00006055832,-0.012039185,0.044433594,-0.06817627,0.03262329,0.020629883,-0.005630493,0.0026454926,-0.0029392242,-0.014907837,0.027359009,-0.00007331371,-0.0024490356,0.038482666,-0.003622055,0.028411865,-0.01133728,-0.027023315,-0.009223938,-0.027740479,-0.021652222,-0.008056641,-0.01651001,-0.0036125183,0.012451172,-0.031143188,0.017181396,-0.027160645,-0.0007314682,-0.007911682,0.011062622,-0.019210815,-0.014778137,0.0055618286,-0.020431519,-0.028305054,-0.005180359,-0.020812988,0.05343628,0.027130127,0.008888245,0.01776123,0.014503479,0.012557983,-0.02217102,-0.023498535,0.006511688,-0.014411926,0.021316528,-0.03744507,0.053131104,0.042510986,0.0070724487,0.053497314,0.025054932,0.041992188,-0.010124207,0.023330688,-0.02420044,0.020629883,-0.032287598,0.0019197464,-0.0061149597,0.033599854,-0.026153564,0.02192688,0.005924225,0.028762817,-0.03479004,0.026321411,0.07763672,0.010749817,-0.008804321,0.040252686,-0.013168335,-0.004016876,-0.016494751,-0.009429932,0.04638672,-0.009132385,0.032348633,0.037902832,0.018936157,0.0000769496,0.01134491,-0.020614624,-0.007911682,0.04220581,0.02772522,-0.017410278,0.013511658,-0.020263672,0.0068092346,-0.042297363,-0.008857727,0.0038776398,-0.0012578964,0.02268982,0.007320404,-0.025405884,-0.0079574585,0.02268982,-0.0077819824,0.01751709,-0.017349243,0.024902344,0.027954102,0.0058898926,0.023147583,-0.0027923584,0.0057754517,-0.019210815,-0.028717041,0.012054443,0.03677368,-0.012313843,0.0023593903,0.023162842,0.026321411,0.039611816,0.037017822,-0.006198883,-0.0013198853,0.028289795,-0.003791809,-0.012245178,0.037597656,0.024642944,0.011619568,0.035583496,0.04208374,0.038116455,-0.02293396,0.005619049,-0.00869751,0.002029419,-0.020736694,0.0019741058,0.02758789,-0.0073280334,0.020385742,0.007774353,-0.02897644,0.016448975,0.021072388,0.0015449524,-0.016921997,0.0008997917,0.021575928,-0.01739502,0.018035889,0.0024986267,-0.011856079,0.02470398,-0.00018715858,0.01676941,-0.016983032,0.03289795,-0.008163452,-0.019226074,-0.017868042,0.0105896,-0.05279541,0.022567749,-0.0011816025,-0.011314392,-0.048583984,-0.000313282,0.00762558,-0.0014867783,-0.000060081482,0.007434845,-0.0054779053,-0.0047569275,0.051208496,0.038116455,-0.012489319,-0.017486572,-0.008804321,0.020584106,0.03540039,0.0077667236,-0.0069122314,-0.008422852,0.024337769,0.012901306,-0.0046844482,0.009117126,0.0030021667,-0.01209259,-0.026626587,0.025268555,0.029586792,0.018005371,0.04095459,-0.023498535,-0.0061836243,-0.0041770935,0.026824951,-0.009010315,-0.031341553,-0.016403198,0.020965576,-0.019073486,0.058563232,0.04788208,0.00096940994,0.037475586,-0.01033783,-0.022979736,-0.0025310516,-0.016067505,0.017715454,-0.022033691,-0.0043792725,0.01134491,0.032043457,-0.02897644,-0.029922485,-0.0022697449,-0.02079773,-0.024551392,-0.025024414,0.02079773,-0.012290955,0.014152527,0.037200928,0.020126343,-0.011604309,0.06518555,-0.022354126,0.033935547,0.0013093948,-0.0074882507,0.054718018,0.019104004,0.034484863,0.0009455681,0.0014324188,-0.017669678,0.0151901245,0.025131226,0.01991272,-0.0005054474,0.014434814,-0.020950317,0.038238525,-0.005847931,0.038208008,-0.00057697296,-0.01914978,0.0076408386,-0.018325806,-0.018676758,-0.0073127747,-0.0077438354,0.019073486,0.049682617,-0.029815674,-0.010772705,-0.021530151,-0.017211914,0.028381348,-0.00818634,0.0064468384,-0.00011634827,-0.011024475,0.013671875,-0.02104187,-0.012458801,0.016983032,0.033233643,-0.06591797,-0.008308411,-0.003042221,0.017044067,-0.022949219,0.02848816,0.030563354,0.0022144318,0.005542755,0.04019165,-0.014419556,0.036499023,-0.0074157715,0.03967285,0.020248413,-0.0038814545,-0.025161743,0.014831543,0.015792847,-0.023132324,0.011360168,0.03479004,-0.01373291,-0.00088882446,-0.013336182,-0.004486084,-0.010551453,0.004600525,-0.01638794,0.00051498413,-0.013679504,-0.017242432,0.026489258,0.0075263977,-0.0026988983,-0.00037837029,0.009925842,-0.016738892,0.01398468,0.04272461,0.013908386,-0.05569458,-0.0057907104,0.006713867,0.00026607513,-0.014373779,-0.020233154,0.0061836243,-0.04498291,0.008338928,0.019424438,0.024887085,-0.009765625,-0.028289795,-0.005191803,0.019760132,0.015052795,0.043792725,0.005207062,-0.0030059814,0.011100769,-0.0055999756,0.0074043274,-0.01033783,-0.013015747,0.017822266,0.023010254,-0.0010967255,-0.013694763,0.024246216,0.0009150505,0.004802704,0.014190674,0.017745972,0.01965332,-0.015060425,-0.017974854,0.0001565218,0.019927979,-0.011375427,-0.023391724,-0.01977539,0.020874023,0.050048828,-0.016723633,-0.0069732666,0.021774292,0.02861023,0.022476196,0.0262146,0.030410767,0.05154419,0.021438599,-0.0020256042,-0.01701355,0.0076522827,-0.026473999,-0.036743164,0.016220093,-0.028137207,-0.024002075,0.027999878,0.013710022,0.009536743,-0.032196045,-0.011039734,-0.017715454,-0.023391724,0.013824463,-0.008735657,0.011398315,-0.036865234,-0.022445679,0.019714355,-0.009887695,-0.00957489,-0.014259338,-0.003358841,-0.014129639,-0.057128906,0.009269714,-0.012336731,-0.0016498566,-0.0056419373,0.009132385,0.018585205,0.022598267,0.0040130615,-0.019592285,-0.00050115585,0.039215088,0.014511108,0.017410278,0.02558899,-0.026931763,-0.019058228,-0.014381409,0.0028133392,-0.013183594,0.04284668,-0.02168274,0.028518677,0.019836426,-0.03604126,-0.0031051636,-0.0014209747,-0.013504028,0.0011644363,-0.03213501,-0.016601562,0.0026683807,0.021057129,-0.0066871643,-0.0028266907,0.033233643,-0.024932861,-0.012260437,0.043792725,0.029464722,0.004371643,0.03842163,-0.007083893,-0.0065841675,-0.029815674,0.0012454987,-0.013908386,-0.004337311,-0.0008420944,0.026550293,0.017196655,0.019958496,0.015602112,-0.011161804,0.011878967,0.035217285,0.021697998,-0.0043792725,0.027664185,-0.0046043396,-0.009788513,-0.02166748,-0.0034809113,0.027877808,0.030944824,0.017242432,0.0014743805,-0.01600647,0.013160706,-0.008995056,0.0063056946,0.03225708,-0.015640259,-0.040802002,-0.008056641,-0.016815186,0.009643555,-0.013336182,-0.002286911,-0.007423401,0.000202775,0.001832962,-0.033081055,-0.009742737,0.01876831,0.011390686,-0.0015306473,0.0009174347,-0.005622864,0.02909851,-0.021026611,0.008171082,-0.066101074,-0.026397705,-0.024734497,-0.010437012,0.026397705,-0.011566162,0.0011138916,-0.010696411,-0.007865906,-0.013160706,0.010688782,0.0018110275,-0.015899658,-0.012229919,-0.004951477,0.045532227,0.0040512085,0.011604309,-0.014305115,0.009437561,0.0052108765,-0.0064849854,0.012374878,-0.0065078735,0.036254883,0.0044784546,-0.015716553,0.022766113,-0.0015211105,0.026947021,-0.009010315,-0.014602661,-0.00043272972,-0.01852417,0.026870728,-0.008514404,-0.01864624,0.015777588,-0.00667572,-0.043121338,0.007270813,0.006713867,0.02331543,-0.0049819946,0.04458618,-0.0048713684,-0.03768921,0.018341064,0.0032596588,-0.027191162,0.0064811707,0.012016296,-0.009925842,0.0062942505,-0.023162842,-0.013694763,-0.030181885,-0.014053345,0.005306244,-0.00655365,-0.012161255,0.009963989,0.02923584,0.037506104,-0.0037727356,0.02909851,0.032958984,-0.0061531067,0.03643799,0.005420685,0.053253174,-0.000770092,-0.02709961,-0.0018377304,0.00074625015,-0.025634766,0.020309448,-0.010688782,0.0011882782,-0.031555176,0.0012874603,0.016082764,0.026855469,-0.00793457,0.010543823,-0.021896362,-0.00078344345,-0.022445679,-0.0049209595,-0.0335083,0.01121521,0.032440186,0.012130737,0.018066406,-0.022064209,-0.020935059,0.008125305,0.026412964,-0.004863739,-0.037200928,-0.0143966675,0.024230957,-0.0036945343,0.01424408,0.0016670227,-0.032287598,-0.027572632,-0.0058135986,0.011955261,-0.003993988,-0.025177002,0.016052246,0.014434814,-0.01953125,-0.0049438477,0.017089844,0.0004506111,-0.008262634,0.01134491,0.0052757263,0.022155762,0.031799316,-0.02848816,0.01739502,0.015792847,-0.046142578,0.059020996,-0.016036987,0.024841309,-0.00881958,-0.004901886,-0.031021118,-0.015281677,-0.01864624,-0.008201599],"createdAt":"2026-04-18T18:43:26.789Z","updatedAt":"2026-04-24T21:31:50.798Z","lastSeenAt":"2026-04-24T21:31:50.798Z","tsv":"'/api/v1/cards/35/transactions':40 '/cards/35/transactions':99 '0.02':11,26,75,148 '000':137 '0x1a2b':152 '0x8335':142 '20':136 '2913':143 '300':156 '402':127 '6':146 '85f3':153 'Base network API' 'accept':195 'address':151 'advertis':114 'ai/ml':65 'among':112 'analyt':64 'api':61,115,165 'appear':90 'application/json':200 'awar':216 'base':9,24,83,138,145 'behind':41 'bodi':205 'broader':51 'call':60 'caller':213 'card':5,20,94 'card transaction lookup' 'card transactions API' 'card-transact':4,19 'card-transactions' 'challeng':45,118 'confirm':119 'connect':174 'contact':225 'content':180 'data':63,68,96 'decim':147 'direct':224 'doc':164 'document':108,159,219 'dozen':55 'endpoint':7,22,32,87,121,194 'exact':130,203 'exampl':192 'experiment':222 'expos':35 'extrem':161 'finance/web3':67 'format':206 'gate':3,18 'http':126 'infer':66 'infrastructur':70 'integr':220 'land':104 'list':88 'live':123 'lowpaymentfee' 'lowpaymentfee.com':34 'network':84 'offer':54 'openapi':184 'page':105,169 'paid':149 'part':48 'particular':110 'path':97 'pay':10,25,58 'pay-per-cal':57 'pay-per-request' 'payment':44,131 'payment card data' 'per':12,27,59,76 'platform':52 'post':37,196 'post-json' 'price':73,166 'prompt':176 'prospect':212 'provid':102,228 'readm':168 'relat':92 'render':171 'request':13,28,77,197,204 'request/response':187 'requir':133,221 'resourc':38 'respons':208 'return':125,199 'rout':111 'schema':188 'scheme':132 'second':157 'segment':98 'settl':78 'span':62 'spec':185 'specif':86 'structur':209 'thin':162 'though':100 'timeout':158 'transact':6,21,95 'transaction history' 'unit':139 'unknown':211 'usag':191 'usdc':15,30,80,141 'usdc-base' 'util':71 'wallet':175 'without':218 'x402':2,17,43,117 'x402 USDC endpoint' 'x402-gated':1,16 'x402-payment'","prices":[{"id":"ea4147ee-7736-44a1-bce3-90621a3dbccc","listingId":"0430afbb-80f9-4ed7-bf39-4c211b397acc","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/cards/35/transactions","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:26.789Z"}],"sources":[{"listingId":"0430afbb-80f9-4ed7-bf39-4c211b397acc","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/cards/35/transactions","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:26.789Z","lastSeenAt":"2026-04-24T21:31:50.798Z"}],"details":{"listingId":"0430afbb-80f9-4ed7-bf39-4c211b397acc","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/cards/35/transactions \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with x402 challenge requiring up to 20,000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/cards/35/transactions"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/cards/35/transactions"},{"claim":"All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The docs, API, pricing, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving transaction records for a specific card","Programmatic access to card transaction data behind a micropayment wall","Agent-driven financial data retrieval paid per call in USDC"],"bestFor":["Developers needing pay-per-call card transaction data without API keys","AI agents that can settle x402 USDC payments on Base","Users who want no-commitment, no-rate-limit access to financial endpoints"],"notFor":["Users who need detailed API documentation before integrating","High-volume batch processing where per-request pricing adds up","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:27.342Z"},"updatedAt":"2026-04-24T21:31:50.798Z"}}