{"id":"6a777d7c-ffc6-4357-b894-d149ebe39591","shortId":"rTxuTm","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol on the Base network. The specific resource `/api/v1/trades/133` appears to be part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request in USDC.\n\nThe endpoint is live and returns a valid x402 challenge (HTTP 402) requesting payment of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the `exact` scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, with a 300-second timeout. The response MIME type is `application/json` and the input method is HTTP POST.\n\nThe specific functionality behind `/api/v1/trades/133` is not documented in the crawled material. The path suggests it may relate to a specific trade record or trade-related data, but this is speculative — the platform's landing page lists categories like \"Finance & Web3\" with price feeds, exchange rates, token quotes, and gas estimates, but does not explicitly list a `/trades` endpoint. Documentation pages (`/docs`, `/pricing`, `/README`) returned only a \"Connect wallet\" prompt with no substantive content. Without further documentation, the exact request format and response schema for this endpoint remain unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-api","no-api-key","http-post"],"categories":["finance","data"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","trades API","lowpaymentfee","crypto payment API","402 payment required"],"warnings":["No documentation available for /api/v1/trades/133 — the exact functionality, request format, and response schema are unknown","All documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no content","The /trades/133 path is not listed among the advertised endpoints on the landing page — its purpose is unclear","No OpenAPI spec or machine-readable schema is available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/133","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/trades/133","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live with a valid x402 challenge and clear pricing ($0.02 USDC on Base), but there is no documentation for the specific /trades/133 resource — no request schema, no response schema, no description of what it returns. The docs, pricing, and README pages are all empty (just 'Connect wallet'). The listing is essentially a stub with payment metadata only.","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":"2026-04-19T11:31:22.930Z","embedding":[-0.021560669,-0.024475098,0.040374756,0.023513794,0.02053833,-0.024291992,-0.011459351,0.045135498,0.06744385,-0.0670166,0.030700684,-0.030807495,-0.039611816,-0.04763794,-0.022277832,0.007663727,-0.008728027,-0.007247925,-0.07116699,0.042236328,0.046691895,-0.029815674,-0.023010254,0.030548096,-0.011192322,-0.016326904,0.00076532364,-0.015960693,-0.030929565,-0.035705566,0.024673462,-0.031173706,-0.0063552856,0.009857178,-0.008155823,-0.028625488,-0.0029125214,0.054748535,0.025772095,-0.0053749084,0.025253296,-0.07098389,-0.00017440319,0.011543274,-0.0541687,-0.018234253,-0.004005432,-0.01928711,-0.020812988,0.010543823,-0.026504517,0.004337311,-0.029815674,0.012641907,0.031204224,0.012336731,-0.015037537,-0.011726379,0.014892578,0.014213562,-0.004047394,-0.07122803,-0.00920105,-0.0029125214,0.014015198,0.049224854,-0.0019931793,0.042877197,0.00617218,0.062408447,0.020812988,0.042938232,0.040405273,0.024032593,-0.0018596649,0.007156372,-0.010635376,0.04800415,-0.019119263,-0.0052833557,-0.009140015,-0.015655518,-0.05230713,-0.016815186,-0.024429321,-0.05911255,-0.023040771,0.0047302246,-0.021652222,0.016830444,-0.08068848,-0.013427734,0.011955261,0.016098022,-0.012802124,-0.020263672,-0.019683838,0.0113220215,-0.011650085,0.02545166,0.009521484,-0.022216797,0.025634766,0.038269043,0.06008911,0.045440674,0.03189087,0.020690918,0.000029683113,-0.014930725,-0.026031494,0.0060310364,0.002658844,-0.013305664,0.017745972,0.007713318,-0.012489319,0.02420044,-0.022644043,0.04562378,-0.05834961,0.032806396,0.024597168,-0.033111572,-0.009262085,-0.031829834,-0.007446289,0.0007491112,-0.031341553,-0.008430481,0.008331299,0.0057754517,0.0335083,-0.010177612,-0.018798828,-0.007007599,-0.015945435,-0.012107849,-0.059509277,-0.022476196,0.054534912,-0.027114868,0.018661499,0.040161133,-0.113464355,-0.004886627,-0.043029785,0.0006008148,-0.029556274,-0.008468628,-0.012702942,0.023742676,-0.024673462,-0.017318726,-0.009315491,-0.02973938,-0.0059394836,0.024337769,-0.0016307831,0.037841797,-0.016525269,0.041778564,0.009765625,0.021621704,0.03616333,0.042266846,0.005908966,-0.08721924,-0.08520508,-0.030838013,0.004875183,-0.013198853,-0.046081543,0.007045746,-0.005996704,-0.0847168,-0.047088623,-0.007545471,-0.0044517517,-0.035888672,-0.02281189,-0.037506104,0.012496948,-0.021911621,-0.042022705,-0.029464722,-0.034057617,0.045928955,0.014053345,-0.000029861927,0.033172607,0.00059366226,0.042541504,0.01309967,-0.015258789,-0.039886475,0.01335907,-0.008811951,0.039489746,0.016647339,0.028213501,-0.034606934,0.018585205,0.0715332,-0.017929077,-0.02305603,0.0030231476,-0.04800415,-0.038116455,-0.03289795,0.010360718,0.007774353,-0.0021266937,0.025878906,-0.030929565,-0.03366089,0.0115356445,0.019073486,0.013580322,0.051513672,0.0087509155,0.0004658699,0.012832642,0.024765015,-0.023376465,0.036865234,0.038513184,0.013122559,-0.024398804,-0.0234375,0.01852417,0.030593872,-0.03366089,-0.0033226013,-0.0048332214,0.016204834,0.004470825,-0.00094652176,0.026031494,-0.013725281,-0.035461426,-0.03353882,0.003873825,0.008972168,-0.0062675476,-0.03111267,-0.05065918,-0.073913574,0.025039673,0.07519531,0.02633667,-0.019165039,-0.019882202,-0.043792725,-0.017059326,-0.07165527,0.050720215,0.06866455,-0.02609253,-0.0067977905,0.036376953,-0.016326904,-0.030075073,-0.021087646,-0.016540527,-0.023910522,-0.016067505,0.0032348633,-0.038635254,-0.0003466606,0.013000488,0.03427124,0.0340271,-0.025466919,-0.0345459,-0.040100098,-0.004009247,0.027328491,-0.027160645,-0.012649536,0.010429382,0.026855469,0.031677246,-0.0022029877,0.015731812,0.012397766,0.017242432,0.00095272064,-0.0002732277,-0.031707764,-0.038482666,0.019454956,0.011947632,-0.07928467,0.005329132,0.0037498474,0.045166016,-0.045318604,0.04458618,-0.026855469,0.0060806274,0.04748535,-0.01524353,-0.051483154,-0.015510559,0.01197052,0.039978027,0.03213501,0.0012350082,-0.02494812,-0.0061798096,0.08355713,-0.020477295,-0.017456055,0.01878357,0.0103302,0.036071777,-0.00026631355,-0.05029297,-0.02670288,-0.0062179565,-0.009979248,0.03652954,-0.019897461,0.048797607,-0.021560669,-0.00074338913,-0.032440186,-0.005054474,-0.051574707,0.0041046143,-0.0036678314,-0.008102417,-0.016952515,-0.013168335,0.029159546,0.014221191,-0.010185242,0.003288269,0.039123535,0.009109497,-0.018005371,-0.021972656,-0.0340271,-0.005268097,-0.019470215,0.028259277,0.01625061,0.0073623657,0.0395813,-0.022064209,0.01713562,0.018707275,0.0088272095,0.037628174,-0.015899658,0.019714355,-0.052886963,-0.04046631,-0.01486969,-0.047729492,0.03137207,0.005004883,0.0058517456,0.05392456,0.011871338,-0.01828003,-0.032928467,0.012016296,-0.048553467,-0.012809753,0.046051025,-0.016815186,-0.038360596,0.01007843,0.005207062,0.005382538,0.04248047,0.018432617,0.0256958,0.08734131,0.039916992,0.013847351,0.014732361,-0.006298065,0.028244019,0.00023639202,-0.025131226,-0.030593872,-0.021560669,0.008041382,-0.025405884,-0.018753052,-0.05783081,0.05731201,0.036743164,0.0927124,0.02041626,0.0051727295,0.03945923,-0.008430481,0.008705139,-0.020446777,-0.037384033,-0.02331543,-0.026062012,0.0063056946,-0.0029754639,-0.031799316,-0.016220093,0.032684326,0.015838623,0.010604858,-0.044128418,0.053344727,-0.021102905,-0.02180481,0.018615723,0.010726929,0.04925537,0.049041748,-0.035705566,0.030838013,0.02027893,-0.036865234,0.008621216,0.036743164,-0.0014619827,-0.010353088,-0.046783447,-0.026168823,0.0105896,-0.012664795,-0.050079346,0.00046372414,0.0132369995,0.025146484,0.0065307617,-0.012184143,-0.01020813,-0.0063323975,-0.010437012,-0.044708252,-0.015007019,-0.023910522,0.00894165,0.044158936,-0.01449585,0.0014972687,0.010635376,0.0071372986,-0.010856628,0.015129089,0.007484436,0.0016384125,-0.050231934,0.03729248,0.002313614,0.011260986,0.03994751,0.025268555,0.03250122,0.023895264,0.05102539,0.008148193,-0.01977539,-0.06329346,0.014732361,-0.028289795,0.004749298,0.0115356445,-0.030548096,-0.008659363,-0.02017212,-0.012306213,-0.024047852,0.033691406,-0.015060425,0.014198303,0.024505615,-0.027297974,-0.028503418,-0.06512451,-0.015777588,0.017700195,0.051635742,0.020935059,0.001783371,-0.061553955,-0.02722168,0.03137207,-0.0003540516,0.0037193298,-0.014915466,-0.0067710876,-0.002565384,-0.027114868,-0.035308838,-0.024856567,0.027526855,-0.00040721893,-0.0076179504,0.0146865845,0.0031394958,0.0050201416,-0.010375977,-0.0077934265,0.038513184,-0.021453857,0.0027179718,-0.021484375,0.013381958,0.0048446655,-0.008926392,-0.052215576,0.036132812,-0.0069084167,0.052093506,-0.028762817,-0.0012369156,0.0039901733,0.020965576,0.012077332,-0.024047852,-0.008705139,-0.012290955,-0.032989502,-0.075805664,0.035125732,-0.022735596,0.025558472,0.01637268,0.012397766,0.031921387,-0.0009560585,-0.0019664764,0.012634277,-0.018356323,-0.015808105,-0.027664185,-0.035003662,-0.0043563843,-0.010154724,-0.012130737,0.020263672,-0.0107040405,0.012710571,-0.0052757263,-0.020812988,0.029022217,0.025909424,-0.005821228,0.008781433,0.018051147,0.004878998,0.041503906,-0.0011253357,-0.041992188,0.015052795,-0.009277344,-0.0011177063,-0.008918762,0.04788208,0.0099487305,-0.022842407,-0.0009274483,-0.0030956268,-0.023406982,-0.014854431,-0.016403198,0.007183075,0.025421143,0.014472961,-0.041229248,0.028549194,0.0036411285,-0.032348633,-0.017471313,0.024047852,0.0256958,-0.04458618,0.02482605,0.025314331,0.056152344,-0.025619507,0.010871887,0.0020885468,0.03756714,0.01687622,0.005382538,-0.010971069,0.01802063,-0.026977539,0.019378662,0.010597229,-0.016799927,0.0079422,0.00066423416,0.018569946,0.01838684,0.009902954,-0.029022217,-0.029922485,-0.012107849,0.010551453,-0.008628845,0.023361206,0.011428833,0.015419006,-0.021408081,0.017608643,0.020462036,-0.03152466,-0.011940002,-0.02142334,0.043182373,-0.0072250366,-0.013427734,0.017807007,-0.009231567,0.015670776,-0.037384033,0.00116539,0.01637268,0.0010147095,-0.008926392,-0.044036865,-0.015853882,-0.008583069,0.04928589,-0.0035858154,0.016998291,0.020339966,0.0023097992,-0.0019054413,0.01158905,0.007293701,-0.018417358,-0.014602661,-0.045898438,-0.011009216,-0.002111435,-0.0031204224,-0.016311646,0.023483276,-0.0289917,-0.012702942,0.006263733,-0.014854431,-0.007881165,-0.014801025,0.012565613,0.021530151,-0.00024330616,0.02357483,-0.020050049,-0.028289795,-0.001991272,0.0049591064,0.0121536255,-0.0131073,0.024887085,-0.009346008,-0.007499695,-0.0005774498,0.0063591003,0.023727417,0.025299072,-0.0062561035,0.045684814,-0.055908203,0.04067993,-0.024291992,0.013465881,-0.0051231384,-0.030151367,-0.010536194,-0.021514893,-0.013938904,0.03527832,-0.020629883,-0.008758545,-0.030181885,-0.03366089,-0.0012378693,-0.056274414,0.02017212,0.022140503,0.033081055,-0.023345947,0.0041542053,0.012817383,0.001745224,-0.005115509,0.009010315,-0.0143966675,0.017700195,0.02229309,-0.011352539,-0.027893066,-0.035949707,-0.012069702,-0.012290955,-0.0602417,-0.038146973,-0.028625488,0.0284729,-0.008232117,0.0017061234,-0.024246216,-0.019226074,-0.0016851425,-0.03665161,0.004009247,-0.0035266876,0.026153564,0.015335083,-0.010612488,0.0017337799,0.027664185,-0.015388489,0.029129028,-0.0004618168,0.0037193298,-0.052124023,0.0067977905,0.037597656,0.028427124,0.0061569214,-0.011062622,-0.0032577515,-0.023727417,-0.0491333,-0.011787415,0.0037136078,-0.0037059784,-0.009101868,-0.010009766,-0.0413208,-0.0023612976,-0.01991272,-0.013961792,0.007434845,0.015220642,0.013084412,0.015930176,0.017486572,-0.0015583038,-0.015808105,-0.034118652,0.0077285767,0.0105896,-0.006259918,0.0044021606,0.05142212,0.007499695,-0.018737793,-0.019348145,0.0015764236,0.003080368,-0.007381439,0.009864807,-0.017456055,0.024887085,-0.014801025,-0.017211914,-0.042755127,0.0033092499,0.072143555,-0.0016670227,-0.01322937,-0.0021343231,-0.004207611,0.013175964,0.032806396,-0.048065186,-0.0048942566,-0.031799316,0.037261963,-0.020904541,0.014640808,-0.0018596649,0.012390137,-0.024337769,-0.049835205,-0.010734558,0.006000519,-0.015205383,-0.053649902,-0.029373169,-0.06365967,-0.0033130646,-0.020828247,-0.020523071,-0.0060653687,-0.0007238388,-0.013999939,-0.09527588,0.0015439987,0.045410156,0.005050659,0.026290894,-0.023269653,0.004245758,0.045837402,-0.036071777,-0.025558472,0.011993408,-0.026519775,-0.009628296,-0.0340271,0.037872314,-0.01838684,-0.025222778,0.021240234,-0.00447464,0.030380249,-0.016036987,0.027801514,-0.01889038,0.009597778,-0.01979065,0.020080566,-0.012382507,-0.014289856,0.0423584,-0.04360962,0.027252197,0.015670776,0.00013256073,0.0018234253,0.023773193,0.02355957,-0.049835205,0.00043559074,0.030670166,0.013725281,0.041137695,-0.020965576,0.053344727,0.029159546,-0.013809204,0.010253906,-0.023269653,-0.006515503,-0.03427124,-0.029678345,0.025177002,0.0038280487,0.021408081,-0.028137207,0.006187439,0.01776123,0.000995636,-0.007007599,-0.003850937,-0.037750244,-0.030334473,0.0018358231,0.0025691986,-0.013313293,0.023010254,0.017333984,0.013687134,0.04421997,0.014732361,-0.008087158,0.0058517456,0.0184021,-0.021606445,0.0052490234,0.022903442,0.0020046234,0.0105896,0.026977539,0.024139404,-0.050842285,-0.028686523,-0.01121521,-0.009719849,0.0013141632,0.0020389557,-0.013595581,-0.011703491,0.0034294128,0.0030841827,-0.04824829,0.008804321,-0.029464722,-0.023117065,0.0034942627,-0.0040740967,0.00667572,0.0070266724,-0.00007081032,0.01675415,-0.0073623657,0.03265381,0.017608643,-0.004211426,0.033569336,0.046081543,0.018829346,-0.026184082,-0.005847931,-0.006816864,-0.019577026,0.002243042,-0.012016296,0.024673462,0.034851074,-0.009376526,0.0021419525,-0.02166748,0.01626587,-0.012268066,0.01977539,0.0067863464,0.011291504,-0.029281616,0.0423584,-0.034088135,0.0054626465,0.021270752,0.0027198792,-0.006072998,-0.016082764,-0.032470703,0.022079468,0.006904602,-0.018066406,0.03668213,-0.0075569153,0.02192688,-0.01737976,-0.022399902,-0.0043525696,-0.015640259,-0.022628784,0.01979065,-0.022415161,-0.009544373,0.024246216,-0.03768921,0.031921387,-0.026824951,0.007835388,-0.0002605915,0.00051259995,-0.019073486,-0.031433105,-0.010467529,-0.02406311,-0.028076172,-0.0014400482,-0.0058021545,0.05230713,0.03540039,0.031311035,0.039978027,0.008338928,0.014930725,-0.03213501,-0.026885986,0.0056114197,-0.02357483,0.016311646,-0.030258179,0.054504395,0.048736572,-0.00095796585,0.046295166,0.034057617,0.026885986,-0.004081726,0.014785767,-0.009498596,0.020065308,-0.028060913,0.023513794,0.0033836365,0.03942871,-0.030838013,0.00026154518,0.0048103333,0.03201294,-0.03152466,0.028060913,0.06414795,0.022567749,-0.0063285828,0.04107666,0.0046844482,-0.012306213,-0.003856659,-0.0090789795,0.059265137,0.004611969,0.03817749,0.024398804,0.007610321,-0.002603531,0.021850586,-0.022705078,-0.041625977,0.04724121,0.018569946,-0.025131226,-0.0082092285,-0.009429932,0.007843018,-0.040649414,-0.008987427,0.022476196,-0.008728027,0.0028457642,-0.0010433197,0.001001358,-0.015716553,0.031204224,0.015609741,0.018859863,-0.019943237,0.019180298,0.031433105,0.005710602,0.018737793,0.0010700226,0.022949219,-0.021270752,-0.007575989,0.014091492,0.018188477,-0.0061416626,0.0053901672,0.021743774,0.014892578,0.053375244,0.041015625,-0.017791748,-0.006477356,0.024124146,0.02116394,-0.0025691986,0.027145386,0.027923584,0.010040283,0.05392456,0.04437256,0.019302368,-0.031066895,0.013008118,-0.015274048,0.012817383,-0.0032863617,-0.0022468567,0.013397217,-0.012580872,0.02104187,0.0070610046,-0.0073165894,0.016418457,0.023712158,0.0011053085,0.0033931732,-0.0039978027,0.018356323,-0.00843811,0.008506775,0.008605957,-0.012619019,0.024154663,0.008804321,0.03390503,-0.027954102,0.036376953,0.000112235546,-0.019699097,-0.024856567,0.010879517,-0.03942871,-0.007209778,-0.008468628,-0.0022830963,-0.04269409,0.020324707,0.024978638,0.0010261536,0.01838684,0.008636475,-0.011810303,-0.0116119385,0.026351929,0.0017948151,-0.002937317,-0.01940918,-0.021484375,0.02458191,0.049987793,0.0031013489,0.013633728,-0.011238098,-0.0034122467,0.016235352,-0.004837036,0.002231598,0.0020866394,-0.007949829,-0.03326416,0.012954712,0.036499023,0.013244629,0.045959473,-0.00623703,-0.021057129,-0.0062408447,0.02734375,0.014122009,0.0075950623,-0.0140686035,0.019744873,-0.0044021606,0.05392456,0.03933716,-0.0034122467,0.038330078,-0.01876831,-0.01134491,0.00053215027,-0.007820129,0.010879517,-0.011528015,0.011512756,-0.0036907196,0.024642944,-0.015312195,-0.042266846,-0.004558563,-0.029464722,-0.013847351,-0.020477295,0.0039634705,-0.0036811829,0.02696228,0.036010742,0.01399231,-0.024978638,0.07067871,-0.0096588135,0.051452637,-0.0099105835,-0.0049209595,0.054504395,0.032073975,0.044708252,0.017150879,0.017227173,-0.024536133,0.012062073,0.045959473,0.025878906,0.01725769,-0.005947113,-0.017852783,0.025466919,0.0034675598,0.029342651,-0.0037822723,-0.00020551682,0.016860962,-0.008468628,-0.0025596619,0.0068626404,0.00070524216,0.009140015,0.058044434,-0.015670776,-0.005882263,-0.01977539,0.0045547485,0.02217102,0.0052757263,-0.002336502,-0.009613037,-0.0234375,0.016143799,-0.02748108,-0.00080013275,0.015296936,0.030197144,-0.046051025,-0.01852417,-0.002565384,0.03286743,-0.015975952,0.020355225,0.036010742,-0.014564514,0.0070152283,0.052764893,-0.0035762787,0.039886475,-0.008483887,0.03161621,0.028793335,0.008285522,-0.011054993,0.016281128,0.0060577393,-0.0073623657,0.010261536,0.045715332,-0.012512207,0.010398865,0.000852108,-0.012176514,0.011482239,0.021362305,-0.019256592,0.005039215,0.000039339066,-0.0027828217,0.019943237,0.00315094,-0.0055122375,-0.009239197,0.014083862,-0.01927185,0.01852417,0.046844482,0.010093689,-0.05758667,-0.0004761219,0.018066406,0.004135132,-0.017318726,-0.018112183,-0.0023498535,-0.038024902,0.012290955,0.016143799,0.014266968,0.0009908676,-0.02267456,-0.0088272095,0.038024902,0.00843811,0.007972717,0.01864624,0.00969696,0.021835327,-0.026885986,0.0024166107,-0.010475159,0.0071258545,0.0124435425,0.013427734,-0.022003174,-0.02670288,0.006275177,-0.005508423,0.006061554,0.017791748,-0.009597778,0.019485474,-0.011222839,0.0041885376,0.006652832,0.014266968,-0.0052871704,0.0009112358,-0.024658203,0.015853882,0.050598145,-0.016967773,-0.0016393661,0.021469116,0.00579834,0.020355225,0.036865234,0.016220093,0.028289795,0.024597168,-0.014762878,-0.019119263,0.022979736,-0.016677856,-0.03479004,0.017211914,-0.0061149597,-0.022979736,0.028839111,0.015960693,0.0048599243,-0.02508545,-0.016418457,-0.011528015,-0.019073486,0.009475708,-0.021942139,-0.008361816,-0.02645874,-0.025222778,0.009529114,-0.014961243,-0.020568848,-0.013847351,-0.0064468384,-0.022125244,-0.044189453,-0.0018615723,-0.0036811829,0.024978638,-0.013214111,0.006652832,0.013183594,0.033355713,-0.0026016235,-0.005264282,0.022323608,0.02897644,-0.0014152527,0.003856659,0.03111267,-0.0076026917,-0.034698486,-0.0234375,0.00019717216,-0.028656006,0.01953125,-0.011665344,0.019897461,0.011878967,-0.0027809143,-0.00070905685,-0.011077881,0.003545761,-0.012527466,-0.03756714,-0.020767212,0.014915466,0.041259766,0.0010004044,-0.008712769,0.04598999,-0.0287323,-0.026062012,0.018600464,0.043182373,-0.00063848495,0.038360596,-0.025787354,0.004173279,-0.01537323,-0.0020961761,-0.01826477,-0.001789093,0.0061149597,0.0018358231,-0.0009794235,-0.00079107285,0.017410278,-0.012893677,0.008430481,0.0154800415,0.0017633438,-0.0141067505,0.039001465,0.00655365,-0.0029125214,-0.015853882,0.000019550323,0.013031006,0.03616333,0.022323608,-0.0076942444,-0.0119018555,0.016952515,-0.0060195923,0.008880615,0.018447876,-0.015365601,-0.040893555,-0.009208679,-0.038330078,0.020065308,0.021011353,0.018615723,-0.010124207,-0.00012683868,-0.0053710938,-0.016921997,-0.013504028,0.020767212,0.007041931,-0.011199951,-0.022476196,0.011398315,0.029022217,-0.029830933,0.0050697327,-0.037200928,-0.03475952,-0.02078247,-0.02406311,0.017318726,0.008117676,0.004508972,0.0110321045,-0.0015830994,0.0011053085,0.0057640076,0.030593872,-0.023849487,-0.020568848,0.027297974,0.021255493,-0.012763977,0.0060043335,-0.0026435852,-0.001376152,0.0078125,-0.006214142,0.017288208,-0.016479492,0.025222778,0.008728027,-0.0134887695,0.021957397,0.012451172,0.023101807,-0.026931763,-0.018569946,-0.013572693,0.002609253,0.032470703,-0.0129776,-0.021621704,0.011329651,-0.026153564,-0.037719727,0.0028533936,0.01637268,0.020568848,0.004463196,0.041412354,-0.016403198,-0.010292053,0.017318726,0.01461792,-0.028076172,-0.0143585205,0.036712646,0.007411957,-0.0010461807,0.00050735474,-0.0061683655,-0.030044556,-0.00009137392,0.017715454,-0.022872925,-0.021728516,0.010917664,0.024627686,0.04067993,-0.018341064,0.024963379,0.029571533,0.027526855,0.033172607,0.0033893585,0.03656006,-0.009086609,-0.022125244,0.010292053,0.006164551,-0.02571106,-0.0032138824,-0.0050354004,0.0039787292,-0.032592773,0.01637268,-0.007545471,0.044647217,-0.007247925,0.0060424805,-0.023773193,-0.000077843666,-0.03604126,-0.003791809,-0.03427124,0.010826111,0.036865234,0.022842407,0.02331543,0.0013046265,-0.032409668,0.026611328,0.04446411,0.012069702,-0.040283203,-0.012107849,0.007873535,0.0026893616,0.0011711121,0.006790161,-0.014732361,-0.026519775,0.0026073456,-0.015327454,0.008712769,-0.0074386597,0.028396606,0.01361084,-0.0041275024,-0.0064926147,0.042663574,0.014457703,-0.004890442,-0.00737381,-0.003900528,0.046020508,0.030914307,-0.011833191,0.019470215,0.028717041,-0.042114258,0.04736328,0.0003578663,0.0090408325,-0.015274048,0.0010242462,-0.04071045,-0.010749817,-0.011505127,-0.00051927567],"createdAt":"2026-04-18T18:57:30.356Z","updatedAt":"2026-04-26T10:03:23.841Z","lastSeenAt":"2026-04-26T10:03:23.841Z","tsv":"'/api/v1/trades/133':57,160 '/docs':218 '/pricing':219 '/readme':220 '/trades':214 '0.02':10,28,88,122 '000':111 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':137 '0x8335':116 '20':110 '2913':117 '300':140 '402':104 '402 payment required' '6':126 'Base network API' 'USDC micropayment API' 'access':6,24,44 'address':136 'ai/ml':78 'analyt':77 'api':5,16,23,34,43,73 'appear':58 'application/json':148 'base':8,26,52,112,119 'base-network' 'behind':159 'broader':64 'call':72 'categori':194 'challeng':102 'connect':224 'content':230 'crawl':166 'crypto payment API' 'data':76,81,183 'decim':127 'document':163,216,233 'dozen':67 'endpoint':38,74,94,215,243 'equal':121 'estim':207 'exact':133,235 'exchang':201 'explicit':211 'feed':200 'financ':196 'finance/web3':80 'format':237 'function':158 'gas':206 'gate':3,21 'given':123 'http':103,154 'http-post' 'infer':79 'infrastructur':83 'input':151 'json-api' 'key':17,35 'land':191 'like':195 'list':193,212 'live':96 'lowpaymentfee' 'lowpaymentfee.com':40 'made':130 'materi':167 'may':172 'method':152 'mime':145 'network':53 'no-api-key' 'offer':66 'page':192,217 'part':61 'path':169 'pay':9,27,70 'pay-per-cal':69 'pay-per-call API' 'pay-per-request' 'payment':48,106,128 'per':11,29,71,89 'platform':65,189 'post':155 'premium':4,22,42 'price':86,199 'prompt':226 'protocol':49 'provid':41 'quot':204 'rate':202 'record':178 'relat':173,182 'remain':244 'request':12,30,90,105,236 'requir':18,36 'resourc':56 'respons':144,239 'return':98,221 'schema':240 'scheme':134 'second':141 'span':75 'specif':55,157,176 'specul':187 'substant':229 'suggest':170 'timeout':142 'token':203 'trade':177,181 'trade-rel':180 'trades API' 'type':146 'unit':113 'unknown':245 'usdc':14,32,92,115,124 'usdc-settlement' 'util':84 'valid':100 'via':45,131 'wallet':225 'web3':197 'without':231 'x402':2,20,47,101 'x402 API' 'x402-gated':1,19 'x402-payment'","prices":[{"id":"75df45bb-6e71-41e9-b529-16f0dec685ad","listingId":"6a777d7c-ffc6-4357-b894-d149ebe39591","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/trades/133","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:30.356Z"}],"sources":[{"listingId":"6a777d7c-ffc6-4357-b894-d149ebe39591","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/133","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:30.356Z","lastSeenAt":"2026-04-26T10:03:23.841Z"}],"details":{"listingId":"6a777d7c-ffc6-4357-b894-d149ebe39591","quickStartSnippet":"# 1. Send POST to the endpoint — you'll get a 402 with payment details\ncurl -X POST https://lowpaymentfee.com/api/v1/trades/133\n\n# 2. Parse the 402 JSON challenge, construct an x402 payment header\n#    (maxAmountRequired: 20000 base units = $0.02 USDC on Base)\n# 3. Resend with X-PAYMENT header containing signed payment proof","exampleRequest":null,"exampleResponse":{"error":"X-PAYMENT header is required","accepts":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/trades/133","description":"Premium API Access","maxAmountRequired":"20000","maxTimeoutSeconds":300}],"x402Version":1},"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/trades/133"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/trades/133"},{"claim":"Platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing trade-related data or executing trade queries without needing an API key or subscription","Programmatic pay-per-call access to financial or data endpoints settled in USDC on Base","Agent-driven workflows that need low-friction, per-request payment for premium data"],"bestFor":["Developers or agents wanting zero-signup, pay-as-you-go API access","Use cases requiring USDC micropayments on Base L2 for low transaction fees","Automated agents that can handle x402 payment challenges natively"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","High-volume consumers who would benefit from bulk pricing or subscription plans","Anyone unable to settle payments in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:46.628Z"},"updatedAt":"2026-04-26T10:03:23.841Z"}}