{"id":"fb033b89-8424-4545-8726-cb278d946924","shortId":"4LQrcS","kind":"x402","title":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-protocol API marketplace that gates access to a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint at `/api/v1/trades/51` is listed as \"Premium API Access\" and accepts POST requests. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…), which equals $0.02 per request (USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader platform advertises four categories of endpoints: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All listed endpoints share the same $0.02/request pricing.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The specific functionality behind `/api/v1/trades/51` is unclear — the path suggests trade data retrieval but no schema or description beyond the generic \"Premium API Access\" label is provided. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is difficult to know what request body to send or what response to expect.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","per-request-billing","no-api-key","post-endpoint","json-response"],"categories":["finance","data"],"synonyms":["x402 API","micropayment API","pay-per-request API","USDC API","Base network API","trades API","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available — request and response formats are unknown","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content","The specific functionality of /api/v1/trades/51 is unclear; 'Premium API Access' is a generic label","Cannot verify what data or service this endpoint actually provides"],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/51","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/51","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","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 request/response schema, no documentation beyond a wallet-connect prompt, and the specific purpose of /api/v1/trades/51 is undocumented. This is effectively a stub listing.","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":"2026-04-19T11:47:43.805Z","embedding":[-0.03277588,-0.026687622,0.03186035,0.003643036,0.018341064,-0.019943237,-0.025985718,0.029922485,0.07019043,-0.05206299,0.03338623,-0.038208008,-0.029037476,-0.02368164,-0.028701782,0.007724762,-0.008163452,0.0046310425,-0.061309814,0.050811768,0.05102539,-0.019744873,-0.020965576,0.03363037,-0.01965332,-0.015914917,0.00894165,-0.0030345917,-0.039001465,-0.02670288,0.032470703,-0.033569336,-0.012802124,0.0052337646,-0.004573822,-0.014907837,0.013137817,0.043182373,0.03302002,-0.0032482147,0.017333984,-0.05682373,0.019592285,-0.009010315,-0.05218506,-0.01550293,0.015007019,-0.019515991,-0.0063476562,-0.009063721,-0.025314331,0.005027771,-0.017089844,0.015289307,0.0184021,0.0035076141,-0.01499176,-0.01638794,0.019592285,0.023391724,-0.013580322,-0.0625,-0.0021362305,0.008430481,0.008270264,0.045410156,-0.0028934479,0.040374756,0.00617218,0.072631836,0.017456055,0.03250122,0.037384033,0.010055542,0.0021629333,-0.012207031,-0.025512695,0.04824829,-0.005504608,-0.013839722,-0.024887085,-0.0058135986,-0.062438965,-0.028518677,-0.027999878,-0.07281494,-0.018066406,0.009498596,-0.032073975,0.017929077,-0.085998535,-0.009971619,0.0030345917,0.008605957,-0.0023460388,-0.016189575,-0.014572144,0.016342163,0.0034313202,0.02243042,0.0061187744,-0.034820557,0.01222229,0.022827148,0.05606079,0.039642334,0.02178955,0.019470215,0.0014619827,-0.017868042,-0.04107666,0.0069618225,0.0014533997,-0.011878967,0.005470276,0.0052986145,-0.0096206665,0.02017212,-0.024887085,0.03491211,-0.061431885,0.0463562,0.025619507,-0.013267517,-0.013198853,-0.045562744,-0.0022239685,-0.0076179504,-0.039611816,-0.0039367676,0.027923584,0.0030536652,0.034606934,-0.009490967,-0.03970337,0.0048332214,-0.015098572,-0.010192871,-0.053375244,-0.010055542,0.048675537,-0.01739502,0.010353088,0.028839111,-0.1048584,-0.004447937,-0.027542114,0.014717102,-0.023513794,-0.00592041,0.015487671,0.022338867,-0.020019531,-0.030410767,-0.015586853,-0.030471802,-0.0119018555,0.041870117,-0.0005354881,0.013809204,-0.0138549805,0.02255249,0.00024867058,0.011108398,0.019058228,0.030410767,0.012016296,-0.09112549,-0.08319092,-0.030822754,0.005519867,-0.0030727386,-0.03353882,-0.0021476746,-0.0031414032,-0.07928467,-0.03970337,-0.017318726,0.0035915375,-0.050933838,-0.01499176,-0.0317688,0.020446777,-0.017105103,-0.0491333,-0.031036377,-0.03314209,0.04888916,0.013046265,0.002281189,0.012321472,0.015640259,0.054656982,0.021850586,0.002313614,-0.03189087,0.0154800415,-0.019958496,0.05621338,0.020721436,0.02798462,-0.027114868,0.035247803,0.06591797,-0.0008339882,-0.033355713,0.008918762,-0.05001831,-0.05316162,-0.032684326,0.015701294,0.0146102905,-0.012161255,0.012809753,-0.030792236,-0.0335083,0.0032920837,0.0211792,0.02017212,0.07458496,0.003982544,0.013381958,0.017211914,0.01448822,-0.022537231,0.057739258,0.040924072,0.0065574646,-0.014205933,-0.040740967,0.020019531,0.04159546,-0.03753662,-0.005847931,-0.005908966,0.012298584,-0.0045814514,-0.010864258,0.021850586,-0.012992859,-0.017166138,-0.032226562,-0.009780884,0.001294136,-0.005458832,-0.035064697,-0.04727173,-0.07104492,0.018981934,0.053741455,0.049316406,-0.0046195984,-0.015029907,-0.03491211,-0.008239746,-0.080566406,0.048858643,0.05279541,-0.007698059,-0.022369385,0.03503418,-0.011299133,-0.03387451,-0.0046081543,-0.019058228,-0.0060424805,-0.024871826,0.009918213,-0.034332275,-0.011459351,0.022735596,0.02935791,0.03829956,-0.027130127,-0.044158936,-0.037750244,-0.0013828278,0.024887085,-0.028274536,-0.0005450249,0.009376526,0.036346436,0.030593872,-0.006679535,0.020141602,0.011802673,0.010612488,0.0038928986,0.013160706,-0.029037476,-0.036468506,0.022750854,0.020965576,-0.073913574,0.012260437,-0.009384155,0.06402588,-0.055786133,0.047332764,-0.028579712,0.033813477,0.03942871,-0.020553589,-0.05319214,-0.0124053955,0.009803772,0.033966064,0.035461426,0.00995636,-0.00819397,-0.012451172,0.06744385,-0.025238037,-0.011550903,0.011123657,0.034057617,0.04345703,-0.0026226044,-0.05496216,-0.030471802,-0.009315491,-0.014122009,0.03491211,-0.009925842,0.037139893,-0.015914917,0.0042266846,-0.032592773,0.005016327,-0.051361084,0.0012235641,-0.030929565,-0.0087890625,-0.025604248,-0.02432251,0.009674072,0.019821167,-0.010032654,0.010025024,0.04071045,0.020767212,-0.017105103,-0.03137207,-0.018051147,-0.008911133,-0.015060425,0.01121521,0.016326904,0.01474762,0.03451538,-0.027450562,-0.00705719,0.01739502,0.006729126,0.029876709,-0.013053894,0.0042037964,-0.058441162,-0.053131104,-0.0234375,-0.036254883,0.021316528,-0.000029802322,0.0034313202,0.047698975,0.006706238,-0.0099105835,-0.03744507,0.008575439,-0.0413208,-0.002626419,0.05822754,-0.037475586,-0.04888916,0.010383606,0.00440979,0.0010137558,0.03677368,0.023254395,0.01939392,0.082214355,0.025024414,0.020263672,0.02267456,-0.004802704,0.023468018,-0.0008368492,-0.019104004,-0.040618896,-0.019165039,0.014030457,-0.030761719,-0.02859497,-0.05996704,0.055511475,0.029922485,0.08734131,0.009086609,0.011581421,0.03414917,-0.01687622,0.012870789,-0.029006958,-0.02911377,-0.020858765,-0.03540039,0.020996094,-0.0009045601,-0.029434204,-0.026992798,0.033172607,0.0052833557,0.013336182,-0.030761719,0.045898438,-0.025268555,-0.016601562,0.0126571655,0.010025024,0.059051514,0.055755615,-0.052581787,0.014015198,0.019104004,-0.014503479,-0.0020618439,0.04019165,-0.0090408325,-0.017623901,-0.059631348,-0.029632568,-0.007183075,-0.023620605,-0.046417236,0.009147644,0.0079956055,0.032592773,0.001405716,0.0025100708,-0.015434265,0.0058135986,-0.015151978,-0.040374756,0.00007927418,-0.03894043,0.0093688965,0.040618896,-0.01701355,0.0034809113,-0.01210022,-0.0020751953,-0.0062217712,0.014694214,0.008979797,0.010681152,-0.054992676,0.04083252,0.0158844,0.013114929,0.030975342,0.02331543,0.040863037,0.017242432,0.057861328,0.011360168,-0.020462036,-0.060455322,0.013832092,-0.033325195,0.003364563,-0.002166748,-0.032806396,-0.004295349,-0.016311646,-0.025650024,-0.01259613,0.025146484,-0.014595032,0.007911682,0.0335083,-0.024963379,-0.04711914,-0.06222534,-0.021896362,0.008018494,0.07849121,0.020996094,0.0039024353,-0.05947876,-0.013938904,0.018615723,-0.00655365,0.030029297,-0.015853882,-0.012123108,-0.015136719,-0.030471802,-0.03491211,-0.02658081,0.04220581,0.0018854141,-0.0154800415,0.023117065,0.0055274963,0.008796692,-0.0036125183,0.0022640228,0.0259552,-0.022262573,-0.0001834631,-0.03744507,0.016708374,0.01399231,0.0015649796,-0.050933838,0.05026245,-0.003774643,0.051574707,-0.04006958,-0.005016327,-0.015686035,0.021957397,0.0022392273,-0.01940918,-0.0031833649,-0.0017776489,-0.04019165,-0.06439209,0.027267456,-0.015777588,0.019485474,0.015182495,0.0075569153,0.03668213,-0.02230835,0.009269714,0.015487671,-0.026290894,-0.008094788,-0.020111084,-0.035125732,-0.014465332,-0.0021247864,-0.016967773,0.018051147,-0.018234253,0.013832092,-0.01133728,-0.019348145,0.037231445,0.028869629,-0.002691269,0.018676758,0.01638794,0.016693115,0.039093018,0.0051651,-0.04949951,0.02897644,-0.005947113,0.0016469955,-0.0033817291,0.046173096,0.015068054,-0.017974854,-0.018478394,-0.0066184998,-0.015899658,-0.017349243,-0.020095825,0.02130127,0.0131073,0.015380859,-0.037994385,0.024261475,0.0054512024,-0.02633667,-0.031677246,0.023117065,0.02357483,-0.045043945,0.019058228,0.01247406,0.057861328,-0.024017334,0.012413025,-0.0064735413,0.04196167,0.024917603,0.009178162,-0.008483887,0.0075912476,-0.02456665,0.018554688,0.00093603134,-0.019836426,0.021484375,0.0035743713,0.018493652,0.01965332,0.01058197,-0.026809692,-0.030471802,-0.007007599,-0.01210022,-0.014717102,0.03564453,0.015167236,0.029678345,-0.01675415,0.026062012,0.032104492,-0.03616333,-0.010246277,-0.027877808,0.044433594,-0.0073242188,-0.005634308,0.022613525,-0.008178711,0.0059661865,-0.048858643,-0.007637024,0.01828003,0.0039405823,-0.007610321,-0.05291748,-0.02658081,-0.014122009,0.05038452,0.0050849915,0.021835327,0.025726318,0.0034065247,0.007575989,0.012878418,0.0017738342,-0.012275696,-0.010444641,-0.04534912,-0.02255249,-0.0077323914,-0.00072050095,-0.02230835,0.014663696,-0.034057617,-0.021606445,0.011016846,-0.019851685,0.004131317,-0.018875122,0.012374878,0.030273438,0.0050849915,0.026687622,-0.0085372925,-0.027740479,0.0027561188,0.0022773743,0.022583008,-0.018081665,0.017929077,-0.005970001,-0.011192322,-0.006038666,0.004714966,0.024795532,0.034973145,0.002937317,0.040283203,-0.040649414,0.045135498,-0.0184021,0.005393982,-0.0075950623,-0.027954102,-0.027191162,-0.023727417,-0.015686035,0.03366089,-0.029846191,0.0011100769,-0.023590088,-0.04043579,-0.010482788,-0.05480957,0.025604248,0.030761719,0.044189453,-0.02960205,-0.0032234192,0.012634277,0.008079529,-0.0069732666,0.0022830963,-0.017868042,0.034332275,0.030960083,0.00095558167,-0.031219482,-0.030715942,-0.0048103333,0.005168915,-0.060333252,-0.045043945,-0.022628784,0.02305603,0.0022392273,0.0010671616,-0.019561768,-0.040374756,0.005264282,-0.029251099,0.005004883,-0.005378723,0.022979736,0.011772156,-0.014663696,0.0025577545,0.02458191,-0.02848816,0.036010742,-0.008483887,-0.003074646,-0.05670166,0.006298065,0.04284668,0.026351929,-0.0024929047,-0.0335083,0.0010766983,-0.020858765,-0.043945312,-0.0030021667,-0.001832962,-0.002658844,-0.0033721924,-0.0025367737,-0.053375244,-0.0021190643,-0.028945923,-0.0049972534,0.015205383,0.012237549,0.000172019,0.0033416748,0.005844116,0.010101318,-0.0042800903,-0.024780273,0.006591797,0.011741638,-0.0107040405,0.013435364,0.04711914,0.0021533966,-0.019729614,-0.0071754456,-0.011039734,0.012718201,-0.016738892,0.015136719,-0.02104187,0.015205383,-0.007446289,-0.010940552,-0.03314209,0.0012559891,0.06549072,0.0030708313,0.014472961,-0.0011749268,-0.013366699,0.015327454,0.03866577,-0.044921875,-0.0075416565,-0.027923584,0.03237915,-0.02293396,0.021453857,-0.0046157837,0.008377075,-0.022903442,-0.058776855,-0.0065956116,0.0031013489,0.009376526,-0.059417725,-0.03274536,-0.07104492,-0.004940033,-0.031463623,-0.0262146,-0.003440857,-0.0070228577,-0.02645874,-0.080078125,0.0024051666,0.05569458,-0.0022335052,0.028793335,-0.016281128,0.02229309,0.047088623,-0.02507019,-0.0072784424,0.010658264,-0.02330017,-0.018920898,-0.034729004,0.02935791,-0.010520935,-0.014717102,0.010971069,0.010757446,0.021499634,-0.006477356,0.032989502,-0.008155823,0.017913818,-0.0101623535,0.014381409,-0.0112838745,-0.011390686,0.042785645,-0.054382324,0.032714844,0.006225586,-0.0007491112,0.00043582916,0.026031494,0.02784729,-0.039642334,-0.008964539,0.02998352,0.009231567,0.026062012,-0.016601562,0.055633545,0.01121521,-0.0069885254,0.0011777878,-0.015060425,-0.0036621094,-0.03527832,-0.039733887,0.029571533,0.008232117,0.015838623,-0.014526367,-0.009475708,0.027374268,0.009056091,-0.0025558472,-0.011199951,-0.015182495,-0.025512695,0.0107421875,0.013961792,-0.0057029724,0.012031555,0.018218994,0.03253174,0.029296875,-0.0031909943,-0.008964539,0.012451172,0.031280518,-0.010108948,-0.0028190613,0.017700195,0.00983429,0.020187378,0.020263672,0.023544312,-0.039978027,-0.019821167,-0.016983032,-0.006336212,0.007865906,-0.0009217262,-0.003118515,-0.011299133,0.007331848,-0.0023155212,-0.042022705,-0.008377075,-0.020401001,-0.023971558,-0.0058670044,-0.0065841675,0.0231781,0.023910522,-0.002855301,-0.0007824898,-0.0059394836,0.03564453,0.0057640076,0.00014102459,0.03616333,0.03567505,0.02734375,-0.031280518,0.002073288,-0.013214111,-0.0055274963,0.00630188,-0.02079773,0.020568848,0.042266846,-0.00573349,-0.0061531067,-0.0045166016,0.013366699,-0.0070152283,0.012145996,0.0062408447,0.011810303,-0.01789856,0.029815674,-0.04385376,0.015655518,0.021011353,0.0066833496,-0.00045871735,-0.026489258,-0.0209198,0.02418518,0.0054626465,-0.007850647,0.047607422,-0.0026512146,0.023834229,-0.017333984,-0.020126343,-0.0050811768,-0.017822266,-0.032104492,0.010269165,-0.016403198,0.007583618,0.014961243,-0.043029785,0.035125732,-0.04168701,0.010620117,0.008262634,0.008415222,-0.020614624,-0.024047852,-0.00011211634,-0.011390686,-0.021957397,0.0056419373,-0.0077781677,0.045837402,0.0259552,0.03842163,0.038604736,0.021881104,0.005874634,-0.043426514,-0.022201538,-0.0023880005,-0.007873535,0.010978699,-0.031188965,0.037719727,0.03286743,-0.008049011,0.042419434,0.04019165,0.027160645,-0.0066070557,0.016342163,-0.0104599,0.03729248,-0.024459839,0.016235352,-0.0062217712,0.03753662,-0.035888672,0.0030994415,-0.004009247,0.025344849,-0.017227173,0.031341553,0.06726074,0.029251099,0.0032520294,0.04046631,-0.0015058517,-0.012756348,-0.0069274902,-0.015914917,0.048614502,-0.00043058395,0.04498291,0.025787354,0.0007376671,-0.00080537796,0.015419006,-0.012481689,-0.033081055,0.047607422,0.027191162,-0.03213501,0.0015153885,-0.0058555603,0.01158905,-0.04159546,-0.010505676,0.022125244,-0.011314392,0.014167786,-0.0069885254,-0.0060539246,-0.01423645,0.016311646,-0.0037517548,0.0072250366,-0.0054092407,0.02709961,0.025283813,-0.001876831,0.025405884,0.0066070557,0.014595032,-0.03564453,-0.0077400208,0.01121521,0.015365601,0.003370285,0.0017433167,0.023757935,0.022949219,0.047912598,0.030059814,-0.018600464,-0.013626099,0.018157959,0.020187378,0.0064086914,0.031219482,0.02319336,0.005718231,0.040740967,0.046722412,0.0211792,-0.02859497,0.019226074,-0.016235352,0.010093689,-0.0043182373,-0.008781433,0.012588501,-0.0031433105,0.010513306,0.012458801,-0.0027637482,0.024169922,0.014587402,-0.00831604,0.007663727,-0.004966736,0.016036987,-0.0017995834,0.00077342987,-0.0016384125,-0.005844116,0.02609253,0.0079574585,0.032592773,-0.032073975,0.034729004,0.0047721863,-0.021194458,-0.009429932,0.015975952,-0.044189453,-0.0072784424,-0.0031929016,-0.007575989,-0.040374756,0.016143799,0.015686035,0.0028018951,0.012016296,0.012634277,-0.013092041,-0.006412506,0.033721924,0.018737793,-0.0038089752,-0.003648758,-0.012397766,0.024414062,0.043548584,-0.00080776215,-0.009086609,-0.022064209,0.009353638,0.015716553,-0.003484726,0.005710602,0.013999939,-0.0075149536,-0.019515991,0.017227173,0.03265381,0.016021729,0.041137695,-0.023452759,-0.01612854,0.0007042885,0.03768921,0.0057678223,0.0059509277,0.0022449493,0.023086548,-0.009101868,0.041931152,0.03012085,0.003358841,0.032562256,-0.0071105957,0.00052690506,0.007850647,-0.02609253,0.02243042,-0.016159058,0.0105896,-0.0066223145,0.023269653,-0.02357483,-0.041900635,0.0017995834,-0.019470215,-0.019485474,-0.027053833,0.01309967,-0.0076789856,0.020843506,0.03488159,0.024093628,-0.017166138,0.06829834,-0.012634277,0.049468994,-0.009017944,-0.008071899,0.0569458,0.024475098,0.04071045,0.007171631,0.01600647,-0.029037476,0.013893127,0.032104492,0.026275635,0.01108551,0.0008330345,-0.017486572,0.033813477,-0.012138367,0.030441284,-0.000808239,0.00022149086,0.022949219,-0.0069084167,-0.019226074,0.0033855438,-0.007381439,0.013420105,0.064086914,-0.011680603,-0.011199951,-0.015975952,-0.0039482117,0.027679443,-0.0028839111,0.0009832382,-0.011558533,-0.01411438,0.0137786865,-0.029464722,-0.0016841888,0.0128479,0.030197144,-0.055267334,-0.025650024,0.0042152405,0.03869629,-0.025787354,0.02494812,0.024429321,-0.015487671,0.011100769,0.04776001,0.0033512115,0.031402588,-0.00655365,0.030410767,0.044525146,0.009460449,-0.014122009,0.013175964,0.002565384,-0.0135269165,0.021484375,0.03564453,-0.004333496,0.0038661957,0.004776001,-0.0009822845,0.007472992,0.014732361,-0.015083313,0.008842468,-0.0013694763,-0.0034103394,0.013618469,-0.00062179565,-0.004611969,-0.0057373047,0.0011024475,-0.018173218,0.011810303,0.039398193,0.009506226,-0.05050659,0.0035171509,0.018615723,-0.0033359528,-0.024749756,-0.011459351,-0.008453369,-0.034851074,0.007522583,0.01928711,0.014801025,0.005531311,-0.020446777,-0.0061683655,0.035614014,0.00970459,0.008583069,0.014137268,0.0014410019,0.018630981,-0.025222778,0.0018978119,-0.004184723,0.0004105568,0.015029907,0.015151978,-0.0051956177,-0.03387451,0.010719299,-0.0012493134,0.0056648254,0.003780365,-0.01159668,0.012130737,-0.007419586,0.002872467,0.007797241,0.009292603,-0.006095886,-0.0032901764,-0.023147583,0.025970459,0.057403564,-0.018661499,-0.009147644,0.01486969,0.023513794,0.017059326,0.036712646,0.011260986,0.028930664,0.015029907,-0.008255005,-0.02798462,0.02709961,-0.0085372925,-0.023330688,0.014709473,-0.0032291412,-0.02394104,0.016021729,0.004814148,0.0028762817,-0.03062439,-0.018692017,-0.01374054,-0.01902771,0.019241333,0.000521183,0.0021438599,-0.032226562,-0.022857666,0.024383545,-0.017669678,-0.027435303,-0.018859863,-0.008369446,-0.022888184,-0.058563232,0.0016708374,-0.008255005,0.014816284,-0.027618408,0.013801575,0.006767273,0.036987305,0.0010032654,0.001042366,0.011680603,0.033477783,0.005924225,0.0032863617,0.025024414,-0.016098022,-0.029678345,-0.01638794,0.002506256,-0.016830444,0.019821167,-0.009727478,0.029647827,0.013076782,-0.0068969727,0.0041275024,-0.012008667,0.0016307831,-0.015914917,-0.026412964,-0.021057129,0.020370483,0.023788452,-0.010566711,-0.015007019,0.0390625,-0.024002075,-0.01889038,0.015914917,0.03164673,0.010627747,0.03753662,-0.019760132,0.0061416626,-0.02835083,0.006137848,-0.011497498,0.0077323914,-0.0029182434,-0.006980896,-0.005554199,-0.0048942566,0.018218994,-0.010475159,0.0041503906,0.023040771,0.008163452,-0.003967285,0.03237915,0.009590149,-0.0007777214,-0.013496399,-0.001578331,0.022247314,0.05419922,0.0038414001,0.00049352646,-0.009307861,0.015853882,-0.005844116,0.005748749,0.014625549,-0.021575928,-0.048309326,-0.010688782,-0.031799316,0.033813477,0.009300232,0.011383057,-0.015487671,0.008102417,0.0016098022,-0.029190063,-0.017227173,0.026473999,0.0019330978,-0.02178955,-0.014526367,0.008094788,0.015853882,-0.042297363,-0.00041651726,-0.046295166,-0.036254883,-0.029464722,-0.023513794,0.023971558,0.0034732819,-0.0033931732,0.003824234,-0.0044784546,-0.0046920776,0.01890564,0.024749756,-0.0036735535,-0.012756348,0.022079468,0.02798462,-0.0065689087,0.019958496,-0.0049743652,-0.0039901733,-0.0034389496,-0.010215759,0.021484375,-0.01675415,0.021575928,0.008766174,-0.01637268,0.014472961,0.006790161,0.026443481,-0.029632568,-0.009429932,-0.015640259,-0.003211975,0.035491943,-0.010383606,-0.019561768,0.0047683716,-0.009338379,-0.033355713,0.0035305023,0.018600464,0.01979065,-0.014892578,0.049926758,-0.029052734,0.006099701,0.013198853,0.010810852,-0.020812988,0.00049591064,0.045410156,-0.006374359,0.00374794,0.0011863708,-0.014015198,-0.023376465,-0.004558563,0.0110321045,-0.019378662,-0.012451172,0.019012451,0.021377563,0.037750244,-0.015068054,0.025970459,0.02835083,0.018630981,0.03729248,0.006378174,0.035736084,0.0045661926,-0.017318726,0.002029419,0.017807007,-0.026657104,0.008277893,0.0009088516,0.011665344,-0.035614014,0.01411438,-0.008079529,0.029815674,-0.007949829,0.00869751,-0.024414062,-0.0019512177,-0.03286743,0.016677856,-0.039794922,-0.0014896393,0.041534424,0.020050049,0.026107788,-0.003255844,-0.035095215,0.038391113,0.050750732,0.008781433,-0.037261963,-0.01826477,0.006324768,-0.011627197,0.0053215027,0.00548172,-0.025497437,-0.028701782,-0.0066070557,-0.009468079,0.0038661957,-0.012756348,0.027160645,0.01637268,-0.0071105957,-0.012397766,0.02583313,0.0041618347,0.006690979,-0.00016582012,-0.008911133,0.032196045,0.035614014,-0.013618469,0.015670776,0.02558899,-0.041992188,0.046722412,0.0047416687,0.020187378,-0.018615723,0.006500244,-0.040374756,-0.009864807,-0.01777649,0.002035141],"createdAt":"2026-04-18T18:58:02.844Z","updatedAt":"2026-04-26T02:03:12.168Z","lastSeenAt":"2026-04-26T02:03:12.168Z","tsv":"'/api':181 '/api/v1/trades/51':67,214 '/docs':179 '/pricing':180 '/readme':183 '/request':17,34,172 '0.02':16,33,95,171 '000':87 '0x8335':92 '20':86 '402':245 '6':100 'Base network API' 'USDC API' 'accept':75 'access':45,73,233 'advertis':81,127 'ai':10,27,139 'analysi':143 'analyt':133 'api':4,21,41,72,103,232 'attach':112 'avail':209 'base':7,24,61,88 'base-network' 'behind':51,213 'beyond':228 'bodi':257 'broader':125 'caller':110 'categori':129 'challeng':80,246 'classif':146 'confirm':240 'connect':189 'content':195 'convers':163 'cost':84 'data':9,26,132,136,221 'decim':101 'descript':227 'difficult':252 'document':174,204,249 'embed':147 'endpoint':14,31,50,65,131,167,238 'equal':94 'estim':157 'exampl':207 'exchang':152 'expect':264 'export':137 'extrem':176 'feed':151 'financ':11,28,148 'four':128 'function':212 'gas':156 'gate':3,20,44 'generat':164 'generic':230 'geocod':161 'header':117 'infrastructur':159 'insight':138 'json-response' 'key':104 'know':254 'label':234 'learn':141 'limit':107 'list':69,166 'live':241 'lowpaymentfee' 'lowpaymentfee.com':35 'machin':140 'marketplac':42 'maximum':83 'metric':134 'micropay':55 'micropayment API' 'network':62 'no-api-key' 'offer':8,25 'openapi':199 'page':184 'path':218 'pay-per-request API' 'payload':208 'payment':116,122 'per':53,96 'per-request':52 'per-request-billing' 'platform':5,22,126 'post':76 'post-endpoint' 'premium':71,231 'price':150,173 'prompt':191 'proof':123 'proper':244 'protocol':40 'provid':236 'quot':155 'rate':106,153 'render':186 'report':135 'request':54,77,97,256 'request/response':202 'requir':109 'respons':262 'retriev':222 'return':242 'schema':203,225 'send':259 'sentiment':142 'settl':56 'share':168 'simpli':111 'spars':177 'spec':200 'specif':64,211 'suggest':219 'summar':145 'text':144 'token':154 'trade':220 'trades API' 'unclear':216 'unit':89 'usdc':58,91,98 'usdc-micropayment' 'use':99 'util':13,30,160 'valid':120,162 'varieti':48 'wallet':190 'web3':149 'without':248 'x':115 'x-payment':114 'x402':2,19,39,79,121 'x402 API' 'x402-gated':1,18 'x402-payment' 'x402-protocol':38","prices":[{"id":"8bb3ae08-83cd-49c3-bc74-b266a52dba70","listingId":"fb033b89-8424-4545-8726-cb278d946924","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/51","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:58:02.844Z"}],"sources":[{"listingId":"fb033b89-8424-4545-8726-cb278d946924","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/51","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:58:02.844Z","lastSeenAt":"2026-04-26T02:03:12.168Z"}],"details":{"listingId":"fb033b89-8424-4545-8726-cb278d946924","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/trades/51 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","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 maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/trades/51"},{"claim":"All listed endpoints 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 platform offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/trades/51"}],"useCases":["Fetching trade data via a single micropayment without needing an API key","Programmatic access to premium data endpoints settled on-chain","Agent-driven API consumption where each call is independently paid"],"bestFor":["Developers wanting keyless, pay-per-call API access","AI agents that can settle x402 payments on Base","Users who need low-cost single-request access without subscriptions"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone unable to pay with USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:45.12Z"},"updatedAt":"2026-04-26T02:03:12.168Z"}}