{"id":"4ebe335f-a078-4a82-b9c0-05c90d074338","shortId":"GBBtW7","kind":"x402","title":"Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-enabled API platform that provides a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/v1/transfers/155` is listed as \"Premium API Access\" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). No API keys or rate limits are advertised; callers pay per request via the x402 protocol's `X-PAYMENT` header.\n\nThe platform advertises four categories of APIs: 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, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/transfers/155` endpoint specifically returns. The x402 challenge confirms the endpoint is live and accepts POST requests, but the actual functionality behind \"Premium API Access\" is unclear from available materials.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-endpoint","data-analytics","ai-inference","finance-data","utility-services"],"categories":["api-platform","crypto"],"synonyms":["low payment fee","x402 api","pay per call api","usdc api","base network api","micropayment api","crypto api gateway"],"warnings":["No documentation available — all doc/API/pricing/README pages render only 'Connect wallet'","No OpenAPI or schema describing request parameters or response format","The specific functionality of /api/v1/transfers/155 ('Premium API Access') is not described anywhere","No request or response examples available to verify what the endpoint actually does","The broad catalog of endpoints (AI, finance, data, utils) is listed but none have documented schemas"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transfers/155","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/transfers/155","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge confirms the endpoint is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of the /api/v1/transfers/155 endpoint is undefined beyond the generic label 'Premium API Access'. Docs pages return only 'Connect wallet' with no content.","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":"2026-04-19T14:02:53.964Z","embedding":[-0.020492554,-0.02507019,0.045013428,0.022491455,0.01902771,-0.032806396,-0.032928467,0.03302002,0.07745361,-0.06604004,0.025543213,-0.045532227,-0.025665283,-0.036071777,-0.024978638,0.0069465637,-0.0023288727,0.011436462,-0.037628174,0.045166016,0.015533447,-0.027008057,-0.02708435,0.016693115,-0.0033664703,-0.030853271,-0.0018777847,-0.01940918,-0.02923584,-0.028625488,0.05331421,-0.028137207,0.0017595291,0.007686615,-0.008460999,-0.0009551048,0.00086021423,0.039276123,0.02758789,-0.007156372,-0.0048179626,-0.052520752,-0.01083374,-0.032440186,-0.04989624,-0.01108551,0.0013179779,-0.024276733,0.0062561035,0.007347107,-0.04550171,0.0003681183,-0.013374329,0.015731812,0.00894165,0.0154418945,0.0033111572,0.00035905838,0.0070152283,0.010612488,-0.012283325,-0.054260254,-0.015090942,-0.010139465,0.004802704,0.05316162,-0.017242432,0.061920166,0.011672974,0.060821533,0.036071777,0.04034424,0.032043457,0.01537323,-0.0010786057,0.004611969,-0.020614624,0.068115234,-0.010437012,-0.015007019,-0.012741089,-0.015701294,-0.055114746,-0.0049362183,-0.0074920654,-0.03567505,-0.023544312,0.007774353,-0.022644043,0.028869629,-0.06689453,-0.013702393,-0.00085783005,0.01751709,0.009643555,-0.014579773,0.0039138794,0.017807007,-0.008399963,0.026229858,-0.0045814514,-0.045959473,0.0132751465,0.009239197,0.041992188,0.026870728,0.014694214,0.01184845,0.010810852,-0.0046577454,-0.047729492,-0.00014841557,-0.011253357,-0.0047569275,0.0041885376,0.00774765,-0.013961792,0.01285553,-0.02571106,0.009223938,-0.05731201,0.048339844,0.015045166,0.0088272095,0.00340271,-0.04937744,-0.010665894,0.013801575,-0.03552246,-0.021987915,0.017654419,0.0070381165,0.037475586,-0.00440979,-0.037078857,0.0019702911,-0.024353027,-0.010002136,-0.046905518,-0.04748535,0.033691406,-0.030303955,0.014953613,0.029205322,-0.103637695,-0.014579773,-0.02381897,0.020706177,-0.028808594,0.0048065186,-0.0064849854,0.02658081,-0.025222778,-0.026870728,-0.017333984,-0.00088500977,0.00011533499,0.029907227,-0.018844604,0.033813477,-0.026000977,0.026763916,0.0030002594,0.00015282631,0.017028809,0.022415161,-0.008331299,-0.09197998,-0.09088135,-0.013320923,0.00198555,-0.03137207,-0.039123535,0.005771637,-0.0079956055,-0.06726074,-0.011161804,-0.036834717,-0.0033435822,-0.047790527,0.006137848,-0.013923645,0.0178833,-0.015510559,-0.06222534,-0.024276733,-0.021697998,0.06097412,0.01876831,0.03463745,0.025222778,-0.00054454803,0.0546875,0.025222778,-0.019119263,-0.01940918,0.013381958,-0.007713318,0.020507812,-0.0065345764,0.020385742,-0.045715332,0.037750244,0.059631348,0.008331299,-0.032958984,-0.0062026978,-0.05340576,-0.04510498,-0.022079468,0.019470215,0.017303467,-0.002439499,0.04257202,-0.039276123,-0.032318115,-0.009277344,0.016647339,0.018173218,0.0713501,0.016738892,-0.011451721,0.012611389,0.014144897,-0.042022705,0.029754639,0.0289917,0.012359619,-0.027053833,-0.024612427,0.03652954,0.039215088,-0.024475098,0.00630188,-0.006576538,0.026763916,-0.012542725,-0.0007972717,0.012962341,0.0014371872,-0.022705078,-0.021957397,-0.028915405,0.025360107,0.0027008057,-0.020553589,-0.025894165,-0.094055176,0.05569458,0.028030396,0.046142578,-0.012886047,0.006916046,-0.014434814,-0.008483887,-0.07489014,0.051208496,0.068359375,-0.0024204254,-0.011985779,0.02204895,-0.012756348,-0.02861023,0.011680603,0.0031375885,-0.040618896,-0.015167236,0.013847351,-0.057250977,0.005176544,0.026184082,0.02935791,0.050964355,-0.0067596436,-0.056488037,-0.026672363,-0.008071899,-0.0014209747,-0.027816772,0.0036907196,-0.01184845,0.013053894,0.020492554,0.004032135,0.014602661,-0.006969452,0.002248764,-0.0021209717,0.013198853,-0.024627686,-0.037231445,0.013412476,0.0093688965,-0.0597229,0.01423645,-0.008804321,0.06604004,-0.03805542,0.038116455,-0.016983032,0.021621704,0.046844482,-0.0057754517,-0.03845215,0.012924194,0.024353027,0.0059280396,0.044036865,0.0012111664,-0.032165527,-0.015426636,0.07470703,-0.011657715,-0.0011386871,0.0011539459,0.022720337,0.025939941,-0.009902954,-0.06573486,-0.035217285,-0.012359619,-0.03842163,0.024734497,-0.009399414,0.01890564,-0.023468018,0.0050964355,-0.026107788,0.002090454,-0.021408081,0.022537231,-0.022232056,0.008796692,-0.009963989,-0.021255493,0.020614624,0.0087509155,-0.006137848,-0.008506775,0.0423584,0.02368164,-0.018722534,-0.030853271,-0.017333984,-0.008544922,-0.0020637512,0.026123047,0.017730713,0.027420044,0.059295654,-0.029541016,0.009933472,0.018829346,0.022720337,0.025924683,-0.015457153,-0.001244545,-0.08154297,-0.057678223,-0.030075073,-0.037475586,0.035186768,0.01651001,0.0010318756,0.047180176,0.010864258,-0.026184082,-0.027374268,0.022109985,-0.055023193,0.0037460327,0.0463562,-0.0013418198,-0.023635864,-0.0065727234,-0.012084961,0.006664276,0.030075073,0.010864258,0.02810669,0.07507324,0.0385437,-0.009246826,0.027374268,-0.009361267,0.026489258,0.012268066,-0.01966858,-0.02758789,0.0007662773,0.0357666,-0.019119263,-0.024017334,-0.068603516,0.05038452,0.038238525,0.075927734,0.01474762,0.005367279,0.032684326,-0.0030078888,0.004512787,-0.04321289,-0.020690918,-0.021133423,-0.043640137,0.04309082,-0.00831604,0.0030727386,-0.02784729,0.052246094,-0.0066490173,0.02760315,-0.02571106,0.03439331,-0.0056610107,-0.008995056,0.018295288,-0.00027656555,0.053710938,0.059661865,-0.046875,0.017318726,0.016586304,-0.040405273,0.0053215027,0.041290283,-0.0035076141,-0.025634766,-0.068237305,-0.031341553,-0.0056495667,0.00012469292,-0.040985107,0.014213562,0.02168274,0.022628784,0.039123535,-0.010192871,-0.013725281,-0.016601562,-0.016967773,-0.066833496,0.006465912,-0.041137695,-0.0032596588,0.045288086,-0.026550293,-0.015899658,0.0006556511,0.00066185,-0.015457153,-0.01197052,0.042907715,-0.008392334,-0.042236328,0.03540039,0.008399963,0.013977051,0.014457703,0.026733398,0.020019531,0.016571045,0.048187256,0.021408081,-0.023254395,-0.061828613,0.010284424,-0.048736572,0.0031661987,0.008255005,-0.024841309,-0.0011377335,-0.0013608932,-0.038238525,-0.029266357,0.018798828,-0.021499634,-0.0071525574,0.009361267,-0.019836426,-0.033294678,-0.056854248,-0.00982666,0.00548172,0.06878662,0.017150879,-0.0056266785,-0.07116699,-0.004173279,0.034423828,0.0087509155,0.03945923,-0.014694214,-0.017700195,-0.020950317,-0.03503418,-0.0060043335,-0.028808594,0.032104492,0.001411438,-0.0052108765,0.016601562,0.0045661926,0.011619568,-0.0024089813,0.014839172,0.021102905,-0.041015625,-0.010093689,-0.0037822723,0.032989502,0.012184143,-0.01675415,-0.0395813,0.04031372,0.018981934,0.045959473,-0.034210205,-0.007835388,-0.014877319,0.011070251,0.021072388,-0.0131073,-0.013244629,-0.002866745,-0.04949951,-0.046295166,0.037109375,-0.021820068,0.025817871,0.02420044,0.0058135986,0.020385742,-0.018249512,0.0029621124,0.020355225,-0.023361206,-0.008216858,-0.020706177,-0.032836914,-0.023834229,0.00028252602,-0.011016846,0.022201538,-0.021453857,0.012397766,0.0019931793,-0.024597168,0.024002075,0.011268616,-0.009277344,0.019561768,0.011299133,0.029281616,0.04437256,0.0107040405,-0.041290283,0.017929077,-0.014587402,0.010269165,-0.0035648346,0.04586792,0.0284729,-0.0022583008,0.0015115738,-0.007911682,-0.017456055,-0.010887146,-0.009552002,0.008369446,0.01713562,-0.009216309,-0.056152344,0.02180481,0.014709473,-0.028762817,-0.030548096,0.029815674,0.0063056946,-0.034484863,0.024765015,0.012290955,0.056854248,-0.02116394,0.008544922,0.008911133,0.043914795,0.034973145,0.006011963,-0.010009766,0.015945435,-0.007701874,0.010276794,-0.010482788,-0.005760193,0.02758789,-0.0009651184,0.022644043,0.025436401,0.013473511,-0.031921387,-0.042877197,0.0038013458,-0.012138367,-0.019973755,0.021484375,0.009536743,0.019104004,-0.033569336,0.021972656,0.010139465,-0.021194458,-0.011367798,-0.0017061234,0.028839111,-0.033966064,-0.010795593,0.019882202,0.006111145,0.023849487,-0.051971436,-0.0053749084,0.0034484863,0.015914917,-0.026794434,-0.038360596,-0.039276123,0.011260986,0.02482605,0.009681702,0.031097412,0.036071777,-0.005706787,0.0046310425,0.026031494,0.0050086975,-0.019485474,-0.02017212,-0.037200928,-0.026779175,0.007575989,0.00258255,-0.032440186,0.01108551,-0.0103302,-0.02545166,0.013023376,-0.015274048,-0.004470825,-0.018325806,0.007873535,0.03918457,-0.006690979,0.02520752,-0.013473511,-0.038238525,0.001707077,0.0013084412,0.02444458,-0.055419922,0.014732361,-0.020950317,0.008773804,-0.003408432,0.0141067505,0.021560669,0.024932861,0.01108551,0.03036499,-0.045440674,0.046142578,-0.027877808,0.019882202,0.0042304993,-0.04574585,-0.00856781,-0.029159546,-0.01965332,0.03765869,-0.027038574,-0.012229919,-0.034851074,-0.034332275,-0.01838684,-0.057250977,0.016311646,0.041656494,0.044708252,-0.027038574,0.0042915344,0.008735657,0.0034542084,-0.018035889,-0.0052757263,-0.010604858,0.0143966675,0.032806396,-0.0030536652,-0.023406982,-0.028335571,-0.021636963,-0.015129089,-0.05331421,-0.058044434,-0.011268616,0.0072288513,-0.010429382,-0.009269714,-0.028839111,-0.030197144,0.008277893,-0.04626465,0.006378174,0.0063209534,0.027709961,0.011070251,-0.02116394,0.0033245087,0.012641907,-0.011390686,0.04248047,0.006252289,0.0025234222,-0.03302002,0.012084961,0.014984131,0.027954102,-0.0035266876,-0.024093628,-0.0033569336,-0.014251709,-0.058563232,-0.0054512024,0.0053710938,-0.012741089,-0.006298065,-0.01084137,-0.05041504,-0.0016860962,-0.013870239,-0.008621216,0.029159546,0.016555786,0.0020523071,-0.010513306,0.01322937,0.00945282,-0.018615723,-0.026397705,0.017242432,0.01058197,0.002445221,0.028945923,0.048553467,0.013977051,-0.022018433,-0.0031147003,0.0076942444,0.017593384,-0.023895264,0.013130188,-0.010261536,0.016601562,-0.009811401,-0.009849548,-0.022628784,-0.00076532364,0.080566406,0.0033168793,-0.0046691895,-0.011299133,-0.01651001,0.008735657,0.023635864,-0.042938232,-0.0005478859,-0.032348633,0.023330688,-0.020385742,0.021820068,0.016723633,0.023025513,-0.018005371,-0.05331421,-0.0041999817,-0.0024909973,-0.0090408325,-0.06970215,-0.011146545,-0.07043457,0.008621216,-0.003376007,-0.027526855,0.010238647,0.007888794,-0.017150879,-0.07635498,0.015670776,0.05847168,0.0071907043,0.027709961,-0.012634277,0.020355225,0.024520874,-0.022445679,-0.0043640137,0.023071289,-0.029052734,-0.024353027,-0.0211792,0.025100708,-0.0033035278,-0.016174316,0.004714966,0.010925293,0.019927979,-0.011131287,0.009796143,-0.006629944,0.01737976,-0.02116394,0.023406982,-0.0014753342,-0.022399902,0.034851074,-0.053009033,0.028915405,0.021148682,0.004837036,0.010101318,0.033355713,0.040405273,-0.037628174,-0.0075302124,0.018035889,0.014640808,0.02708435,-0.019714355,0.04852295,0.021102905,-0.015548706,0.023605347,-0.0022182465,-0.0107040405,-0.02909851,-0.022598267,0.031433105,0.003124237,0.014816284,-0.023391724,0.0026073456,0.016281128,-0.002571106,0.007858276,-0.018081665,-0.0074310303,-0.025939941,-0.007911682,0.007511139,0.0049819946,-0.00007259846,0.030441284,0.024307251,0.038116455,0.0046806335,-0.018341064,0.011291504,0.039215088,-0.008384705,0.0079574585,0.023086548,0.013687134,0.012672424,0.020339966,0.0107040405,-0.054016113,-0.00687027,-0.01159668,-0.01751709,0.0047416687,-0.0026512146,-0.013595581,-0.010932922,0.0002784729,-0.00042438507,-0.02407837,0.0029716492,-0.024139404,-0.017471313,-0.007499695,-0.012023926,0.017913818,0.010803223,0.011756897,0.0034313202,0.0032997131,0.043121338,0.0020694733,-0.0031204224,0.02029419,0.027954102,0.028839111,-0.03845215,-0.008430481,-0.020080566,-0.0030460358,-0.00078582764,-0.036193848,0.015991211,0.03869629,-0.015350342,-0.006095886,0.0018320084,0.030883789,-0.010101318,-0.008514404,-0.004486084,0.026611328,-0.008979797,0.035980225,-0.038330078,0.0178833,0.014823914,0.006252289,0.00081539154,-0.017578125,-0.02609253,0.02053833,0.0009660721,-0.0067634583,0.051849365,0.0027217865,0.01751709,-0.019378662,-0.011161804,0.010238647,-0.02861023,-0.01776123,0.016021729,-0.018676758,0.002872467,-0.0022602081,-0.029754639,0.028259277,-0.028060913,0.0151901245,0.004711151,0.006580353,-0.023254395,-0.01449585,-0.013153076,0.0012979507,-0.021743774,0.0018234253,-0.00077819824,0.05203247,0.017990112,0.033935547,0.04498291,0.0069999695,-0.0059509277,-0.03604126,-0.022506714,0.0074272156,-0.020263672,0.018173218,-0.020217896,0.042236328,0.045410156,-0.00687027,0.034576416,0.04006958,0.03375244,0.0050621033,0.007583618,-0.011520386,0.02168274,-0.0059280396,0.028182983,-0.0039138794,0.042175293,-0.015716553,0.019927979,0.016052246,0.028076172,-0.03225708,0.03845215,0.06939697,0.01499939,-0.0033893585,0.01953125,-0.0042915344,-0.0063095093,-0.007255554,-0.027114868,0.06124878,0.014183044,0.056518555,0.048065186,-0.001376152,-0.007457733,0.023895264,-0.020217896,-0.025650024,0.078125,0.013671875,-0.015464783,-0.009605408,-0.0031089783,0.010887146,-0.04534912,-0.036895752,0.014762878,-0.014968872,0.0138549805,-0.012397766,-0.017211914,-0.012519836,0.020568848,0.0061073303,0.018936157,-0.011947632,0.027999878,0.029312134,0.008224487,0.02861023,-0.005836487,0.025390625,-0.02217102,-0.029785156,0.017318726,0.014785767,-0.001045227,0.00033593178,0.033477783,0.0068244934,0.048858643,0.040740967,-0.014328003,0.0047798157,0.034973145,0.006778717,-0.004600525,0.050689697,0.038757324,0.01739502,0.034118652,0.030914307,0.024383545,-0.037628174,0.024414062,-0.0016078949,0.0010900497,-0.007408142,-0.016098022,-0.0014915466,-0.014877319,0.015533447,0.0025253296,-0.021209717,0.03164673,0.028579712,-0.0019626617,-0.008132935,-0.00040268898,0.0115356445,-0.014732361,-0.0009088516,0.014564514,-0.017166138,0.028503418,0.014198303,0.028945923,-0.011779785,0.017791748,-0.012176514,-0.016281128,-0.004108429,0.029724121,-0.027664185,0.008522034,-0.0042304993,-0.0035362244,-0.05178833,0.015655518,0.020874023,-0.00699234,0.029342651,0.008270264,-0.014457703,-0.00409317,0.020843506,0.007320404,0.00064611435,-0.01374054,-0.017227173,0.043151855,0.044555664,0.0032997131,0.017196655,-0.0178833,-0.007183075,0.009498596,-0.009780884,-0.005622864,-0.020202637,-0.025817871,-0.019805908,0.022537231,0.03375244,0.023712158,0.056854248,-0.021606445,-0.01638794,0.0050735474,0.032165527,0.004360199,0.00207901,0.00012552738,0.020751953,-0.021240234,0.0418396,0.04373169,0.012741089,0.030838013,-0.019134521,-0.009353638,0.01474762,-0.011627197,0.024734497,-0.013137817,0.006652832,-0.006389618,0.023803711,-0.01725769,-0.047546387,0.017700195,-0.024734497,-0.022705078,-0.025848389,0.010368347,0.002538681,0.024642944,0.039398193,0.012382507,-0.031799316,0.06262207,-0.013702393,0.048736572,0.0047721863,-0.018966675,0.0473938,0.01965332,0.0234375,0.022247314,0.024505615,-0.03744507,0.018814087,0.04852295,0.018539429,0.013084412,-0.0060920715,-0.011070251,0.035217285,0.0003092289,0.024383545,-0.012954712,0.003522873,0.011161804,-0.0015859604,-0.008628845,-0.008872986,-0.0023555756,-0.0015630722,0.055847168,-0.028335571,-0.020462036,-0.02218628,-0.00806427,0.028442383,-0.00064373016,0.0087509155,-0.019927979,-0.026290894,0.015686035,-0.033172607,-0.024215698,0.001786232,0.021072388,-0.032562256,-0.02444458,0.0035591125,0.012458801,-0.027267456,0.018356323,0.026657104,-0.011177063,0.002199173,0.04034424,-0.013031006,0.034362793,-0.008934021,0.031982422,0.03152466,-0.0006747246,-0.027893066,-0.007820129,0.005153656,-0.020248413,0.012252808,0.034454346,-0.013137817,-0.0047950745,-0.005718231,-0.006378174,-0.003545761,-0.0042686462,-0.0058631897,0.007881165,-0.0137786865,0.0007352829,0.00016534328,0.010421753,0.004371643,0.0032863617,-0.021865845,-0.016433716,0.020202637,0.028152466,0.016235352,-0.041534424,-0.0075645447,0.010635376,0.0023784637,-0.025604248,-0.015792847,-0.00894928,-0.02999878,0.013435364,0.010673523,0.011024475,0.025177002,-0.022827148,0.007106781,0.020599365,0.01499939,0.019744873,0.009239197,-0.013648987,0.010307312,-0.009407043,-0.009880066,-0.0063591003,-0.0061073303,0.014633179,0.02722168,-0.0012922287,-0.026763916,0.023391724,-0.006313324,0.016143799,0.009544373,-0.008392334,0.022232056,-0.013198853,-0.0048561096,-0.0021972656,0.019851685,-0.010826111,-0.02027893,-0.015945435,0.024139404,0.050323486,-0.016418457,-0.0038967133,0.017745972,0.012084961,0.017807007,0.043395996,0.022369385,0.04360962,0.02330017,-0.019454956,-0.020019531,0.021606445,-0.007610321,-0.027786255,0.007270813,0.0021343231,-0.0075912476,0.025115967,-0.0041503906,0.0034179688,-0.022079468,-0.020828247,-0.015701294,-0.011695862,0.006046295,-0.014076233,0.014785767,-0.017547607,-0.023269653,0.004962921,-0.02722168,-0.04949951,-0.018600464,-0.007896423,-0.007411957,-0.054229736,0.01423645,-0.034423828,0.007827759,-0.023910522,0.008491516,-0.0027446747,0.029174805,-0.020904541,0.004550934,-0.00046038628,0.03250122,0.01828003,0.012809753,0.023513794,-0.026062012,-0.03314209,-0.017669678,0.012138367,-0.009429932,0.015457153,0.015556335,0.036712646,0.022598267,-0.011253357,-0.0009045601,-0.016952515,-0.00881958,-0.014671326,-0.021102905,-0.02279663,0.022323608,0.015205383,-0.017623901,-0.0045776367,0.03439331,-0.021499634,-0.014144897,0.024673462,0.04550171,0.008911133,0.031707764,-0.025741577,0.007293701,-0.01789856,-0.010536194,-0.013336182,0.01108551,0.0079193115,0.0065231323,-0.008712769,-0.004764557,0.0206604,-0.023284912,-0.0023403168,0.024093628,0.007965088,-0.012145996,0.03744507,0.018417358,0.009307861,-0.017044067,-0.013320923,0.031219482,0.042755127,0.019515991,0.013923645,0.0060806274,0.004837036,-0.009178162,0.0036582947,0.005580902,-0.02432251,-0.04135132,-0.01991272,-0.024047852,0.016815186,-0.0026512146,0.01033783,-0.009269714,0.023010254,-0.008003235,-0.025024414,-0.02029419,0.025100708,0.009376526,-0.009963989,-0.008621216,0.0020370483,0.016281128,-0.026489258,0.0044021606,-0.049316406,-0.03616333,-0.010734558,-0.015258789,0.027038574,0.011581421,-0.0011043549,-0.0027065277,-0.0053977966,-0.0021915436,-0.0006585121,0.035949707,-0.024307251,0.005432129,0.020690918,0.00907135,-0.025009155,0.018707275,-0.009925842,-0.009536743,0.010910034,-0.009552002,0.00043344498,-0.021408081,0.041778564,-0.0052108765,0.0042877197,0.040740967,-0.0090408325,0.014457703,-0.031555176,0.009002686,-0.00019466877,0.002286911,0.038726807,-0.019088745,-0.0068359375,0.0010938644,-0.004585266,-0.023986816,0.0014925003,0.021957397,0.029342651,-0.0046653748,0.051849365,-0.011116028,-0.000330925,0.014671326,0.01436615,-0.009902954,0.004749298,0.030670166,0.009147644,0.0005249977,-0.008140564,-0.01335144,-0.027374268,-0.0058555603,0.006881714,-0.006614685,-0.008369446,0.02229309,0.00945282,0.03845215,0.0010766983,0.019439697,0.01991272,0.010002136,0.033966064,0.00047016144,0.045898438,0.0018501282,-0.015129089,0.0045776367,0.0055122375,-0.020706177,-0.003118515,-0.0054893494,0.0027103424,-0.032806396,0.015853882,-0.01146698,0.028686523,-0.0131073,0.008552551,-0.02268982,-0.0093688965,-0.040771484,-0.021621704,-0.028076172,0.006137848,0.027526855,0.0030574799,0.0317688,0.0061569214,-0.01777649,0.024093628,0.050994873,-0.0020523071,-0.029052734,-0.009780884,0.014862061,-0.0029754639,0.010375977,0.01576233,-0.021057129,-0.0134887695,-0.003578186,-0.012641907,0.0038108826,-0.008415222,0.0113220215,0.011856079,0.003332138,-0.018997192,0.028762817,-0.0008010864,0.003686905,0.016326904,0.00033044815,0.040222168,0.029129028,-0.0118255615,0.020111084,0.018814087,-0.035949707,0.06359863,-0.0028858185,0.034423828,-0.016845703,0.008895874,-0.036987305,-0.0178833,-0.013153076,0.019729614],"createdAt":"2026-04-18T19:27:33.152Z","updatedAt":"2026-04-23T04:02:06.302Z","lastSeenAt":"2026-04-23T04:02:06.302Z","tsv":"'/api/v1/transfers/155':69,199 '/request':19,38,160 '0.02':18,37,80,159 '000':84 '20':83 '6':90 'accept':212 'access':75,222 'actual':217 'advertis':99,115 'ai':12,31,127 'ai-inference' 'analysi':131 'analyt':121 'api':5,24,45,74,93,119,168,221 'avail':226 'base':8,27,63,85 'base network api' 'base-network' 'behind':219 'broad':50 'call':4,23,82 'caller':100 'catalog':51 'categori':117 'challeng':205 'classif':134 'confirm':206 'connect':177 'convers':151 'cost':77 'crypto api gateway' 'data':11,30,120,124 'data-analytics' 'decim':91 'descript':195 'detail':184 'doc':167 'document':162 'embed':135 'enabl':44 'endpoint':16,35,57,67,155,200,208 'estim':145 'exampl':192 'exchang':140 'export':125 'extrem':164 'feed':139 'financ':13,32,136 'finance-data' 'four':116 'function':218 'gas':144 'generat':152 'geocod':149 'header':112 'infrastructur':147 'insight':126 'key':94 'learn':129 'limit':97 'list':71,154 'live':210 'low payment fee' 'lowpaymentfee.com':39 'machin':128 'materi':227 'metric':122 'micropayment api' 'network':64 'no-api-key' 'offer':10,29 'openapi':188 'page':172 'pay':2,21,54,101 'pay per call api' 'pay-per-cal':1,20 'pay-per-request':53 'payment':111 'per':3,22,55,81,102 'platform':6,25,46,114 'post':213 'post-endpoint' 'premium':73,220 'price':138,161,169 'prompt':179 'protocol':107 'provid':48 'quot':143 'rate':96,141 'readm':171 'render':174 'report':123 'request':56,103,214 'request/response':191 'return':202 'schema':189 'sentiment':130 'settl':58 'share':156 'spars':165 'specif':66,201 'summar':133 'technic':183 'text':132 'token':142 'unclear':224 'unit':86 'usdc':9,28,60,88 'usdc api' 'usdc-settlement' 'util':15,34,148 'utility-services' 'valid':150 'via':104 'wallet':178 'web3':137 'x':110 'x-payment':109 'x402':43,106,204 'x402 api' 'x402-enabled':42 'x402-payment'","prices":[{"id":"f0d7ebbe-5877-4e44-a6b2-320b7cebc2ab","listingId":"4ebe335f-a078-4a82-b9c0-05c90d074338","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/transfers/155","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:27:33.152Z"}],"sources":[{"listingId":"4ebe335f-a078-4a82-b9c0-05c90d074338","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transfers/155","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:27:33.152Z","lastSeenAt":"2026-04-23T04:02:06.302Z"}],"details":{"listingId":"4ebe335f-a078-4a82-b9c0-05c90d074338","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transfers/155 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring X-PAYMENT header with USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/transfers/155"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02","source_url":"https://lowpaymentfee.com/api/v1/transfers/155"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Four API categories listed: Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages all show only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing pay-per-call data and analytics endpoints without subscription commitments","Running AI inference tasks (sentiment, summarization, classification, embeddings) via micropayments","Fetching financial data such as token quotes, exchange rates, and gas estimates","Using utility services like geocoding, validation, and conversion on demand"],"bestFor":["Developers wanting API access without API key management or subscriptions","Agents that can settle payments via x402 on Base using USDC","Low-volume or bursty workloads where per-request pricing is more economical"],"notFor":["Users needing detailed API documentation or OpenAPI schemas before integration","High-volume production workloads where per-request costs add up quickly","Users who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:34.692Z"},"updatedAt":"2026-04-23T04:02:06.302Z"}}