{"id":"35864af9-3d93-45ea-b877-5698aff93a55","shortId":"k3ZJwE","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a variety of endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints are pay-per-request at $0.02 each, settled in USDC on the Base network. No API keys, rate limits, or subscriptions are required — callers simply attach an x402 payment header to each request.\n\nThe specific endpoint at `/api/v1/transfers/188` is listed as \"Premium API Access\" and its x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The endpoint accepts POST requests and returns application/json. The broader platform advertises endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02 per call.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed descriptions of what each endpoint actually returns. The x402 challenge is live and well-formed, confirming the endpoint is operational, but without documentation it is unclear what input parameters `/api/v1/transfers/188` expects or what data it returns.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","data-analytics","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","crypto-quotes","geocoding","utility-apis"],"categories":["api-platform","llm","finance","geo"],"synonyms":["low payment fee","x402 api","pay per call api","micropayment api","usdc api","base network api","crypto pay api","serverless api"],"warnings":["No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or JSON schema describing request parameters or response format","The specific purpose of /api/v1/transfers/188 ('Premium API Access') is unclear — it does not match any of the advertised endpoint categories","No examples of request bodies or response payloads available anywhere in crawled content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transfers/188","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/188","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint works and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages render only 'Connect wallet' with no content. The purpose of this specific '/transfers/188' endpoint 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":"2026-04-19T14:22:59.324Z","embedding":[-0.023910522,-0.024017334,0.035980225,0.022842407,0.0065307617,-0.02708435,-0.019012451,0.029953003,0.07244873,-0.058898926,0.037139893,-0.04824829,-0.03338623,-0.032318115,-0.010154724,0.013244629,0.0012950897,0.011505127,-0.037078857,0.04385376,0.021591187,-0.021194458,-0.02822876,0.016983032,-0.004547119,-0.031829834,-0.007904053,0.0014352798,-0.017868042,-0.026306152,0.029220581,-0.03262329,0.00018811226,0.0093307495,-0.00856781,0.012283325,0.00592041,0.04434204,0.020553589,-0.012886047,-0.0035629272,-0.0680542,0.0039482117,-0.033447266,-0.062683105,-0.010345459,0.0021438599,-0.025390625,0.0046653748,-0.0046195984,-0.031219482,0.0027275085,-0.009902954,0.00047302246,-0.0008263588,0.010795593,-0.008956909,0.004787445,0.008056641,0.0093688965,-0.015541077,-0.059417725,-0.013198853,-0.01927185,0.015792847,0.051452637,-0.014274597,0.056884766,-0.0031833649,0.06591797,0.034606934,0.044555664,0.042053223,0.01234436,0.0036640167,-0.002544403,-0.019638062,0.05569458,-0.0025997162,-0.033569336,-0.018096924,-0.023651123,-0.06121826,-0.00920105,-0.0050735474,-0.04699707,-0.025177002,0.022735596,-0.018997192,0.029953003,-0.064697266,0.00061511993,-0.011390686,0.0025978088,0.016479492,-0.016540527,0.004547119,0.018051147,-0.0024032593,0.021636963,-0.017181396,-0.04055786,0.008407593,0.012207031,0.04095459,0.037506104,0.019348145,0.015686035,0.0088272095,-0.010284424,-0.02973938,0.006378174,-0.0087509155,-0.015716553,0.013679504,-0.0021839142,-0.013046265,0.02192688,-0.02885437,0.016418457,-0.04458618,0.0418396,0.010429382,0.005592346,0.003238678,-0.051849365,-0.0071525574,0.013458252,-0.029205322,-0.0045928955,0.021331787,0.010002136,0.035858154,-0.010055542,-0.0413208,-0.0013656616,-0.030899048,0.0036830902,-0.04940796,-0.040283203,0.03543091,-0.024246216,0.009048462,0.036895752,-0.09637451,-0.017715454,-0.024276733,0.02355957,-0.016036987,-0.010215759,0.00642395,0.022537231,-0.01689148,-0.017501831,-0.018844604,-0.020263672,-0.005832672,0.033081055,-0.0074539185,0.03640747,-0.02508545,0.021774292,0.006958008,-0.0025939941,0.01626587,0.02407837,-0.0010375977,-0.08270264,-0.0814209,-0.016845703,0.0050201416,-0.029006958,-0.030273438,0.009399414,-0.0085372925,-0.085510254,-0.01109314,-0.035064697,-0.0109939575,-0.040405273,0.0026302338,-0.033813477,0.026931763,-0.012420654,-0.05706787,-0.025375366,-0.021606445,0.056121826,0.028259277,0.038146973,0.025466919,-0.002254486,0.06414795,0.021453857,-0.013587952,-0.014602661,0.030715942,-0.017303467,0.027328491,-0.0067863464,0.030471802,-0.017364502,0.030166626,0.055480957,-0.007583618,-0.04888916,-0.010559082,-0.06359863,-0.053100586,-0.03439331,0.021194458,0.007522583,-0.0066490173,0.037902832,-0.031341553,-0.021347046,-0.002210617,0.025939941,0.012107849,0.06262207,0.021484375,-0.005077362,0.031585693,0.007434845,-0.05154419,0.03778076,0.036224365,0.0038318634,-0.027877808,-0.04385376,0.045654297,0.033966064,-0.038330078,0.0007019043,-0.009315491,0.020492554,-0.007507324,0.00333786,-0.0027217865,0.0042495728,-0.021652222,-0.0211792,-0.010276794,0.02558899,0.001865387,-0.02053833,-0.032958984,-0.08496094,0.05303955,0.034820557,0.043121338,-0.0030994415,0.0076179504,-0.016479492,-0.026412964,-0.079833984,0.05508423,0.07598877,-0.0002503395,-0.023803711,0.030273438,-0.016281128,-0.03918457,0.018814087,-0.009628296,-0.032073975,-0.017425537,0.020965576,-0.04675293,0.0035324097,0.022583008,0.023391724,0.041778564,-0.008674622,-0.061798096,-0.028198242,-0.008239746,0.004989624,-0.030975342,-0.0062065125,-0.006263733,0.028579712,0.018096924,0.0059432983,0.001996994,-0.007724762,-0.0022220612,-0.0045928955,0.021896362,-0.011253357,-0.023422241,0.018005371,0.01184845,-0.053222656,0.0073890686,-0.015670776,0.061798096,-0.050109863,0.037231445,-0.0071258545,0.020843506,0.05392456,0.003528595,-0.040618896,0.002090454,0.022598267,0.014427185,0.047729492,0.010795593,-0.02571106,-0.015792847,0.07733154,-0.018554688,-0.0065727234,0.018447876,0.02027893,0.033355713,-0.006828308,-0.05343628,-0.030929565,-0.008590698,-0.034698486,0.04248047,-0.0051078796,0.02331543,-0.023422241,0.0076293945,-0.027328491,0.0047683716,-0.022506714,-0.0028419495,-0.017547607,0.013938904,-0.0052337646,-0.020019531,0.012664795,0.0045318604,-0.011260986,0.011070251,0.047912598,0.010826111,-0.01158905,-0.018463135,-0.03253174,-0.0129776,-0.006336212,0.024505615,0.02229309,0.02494812,0.058013916,-0.03842163,0.010848999,0.015327454,0.016174316,0.03277588,-0.0063476562,-0.018188477,-0.058013916,-0.053863525,-0.030731201,-0.041381836,0.0368042,0.02130127,-0.0067977905,0.05722046,0.0065689087,-0.01675415,-0.030227661,0.015205383,-0.05480957,-0.006778717,0.04788208,-0.020950317,-0.026412964,0.005672455,-0.008346558,0.002603531,0.033355713,0.016983032,0.027954102,0.08026123,0.030960083,-0.002281189,0.020431519,-0.010848999,0.024124146,0.009979248,-0.024520874,-0.016403198,-0.012168884,0.032836914,-0.022155762,-0.02394104,-0.056243896,0.04949951,0.04067993,0.08166504,0.029693604,0.0099487305,0.037109375,-0.010505676,-0.002286911,-0.03579712,-0.02394104,-0.021636963,-0.03225708,0.030334473,-0.00920105,-0.0069618225,-0.023208618,0.04525757,-0.0012388229,0.024291992,-0.041168213,0.033966064,-0.013763428,-0.01486969,0.021514893,0.0073280334,0.055267334,0.06744385,-0.050109863,0.012069702,0.008453369,-0.031921387,-0.004486084,0.03793335,-0.014518738,-0.0073013306,-0.0635376,-0.027542114,-0.007144928,0.0013999939,-0.036224365,0.010215759,0.01940918,0.026535034,0.04425049,-0.0032997131,-0.016159058,-0.010215759,-0.010444641,-0.061309814,0.0041389465,-0.04663086,0.011276245,0.045898438,-0.02798462,-0.006515503,0.0050239563,0.003238678,-0.027374268,0.0058250427,0.037841797,0.0032043457,-0.05456543,0.043640137,-0.006439209,0.025527954,0.013572693,0.024139404,0.03265381,0.024429321,0.031219482,0.018539429,-0.022567749,-0.06921387,0.01171875,-0.03390503,0.005695343,0.01864624,-0.032989502,-0.0021781921,-0.009811401,-0.040374756,-0.030334473,0.023086548,-0.021743774,-0.0005745888,0.011726379,-0.023086548,-0.025985718,-0.046844482,-0.029449463,-0.002714157,0.05911255,0.016113281,0.008865356,-0.06756592,-0.017608643,0.031402588,0.008972168,0.019104004,-0.01576233,0.0015087128,-0.017990112,-0.025848389,-0.011657715,-0.02809143,0.036010742,-0.0047569275,0.0006737709,0.013298035,0.0059013367,0.016921997,-0.002231598,0.017593384,0.027252197,-0.035217285,-0.0021629333,-0.010681152,0.024246216,0.02041626,-0.024307251,-0.048431396,0.042816162,0.013000488,0.05065918,-0.043304443,-0.00016772747,-0.010795593,0.021774292,0.014198303,-0.01033783,-0.00032901764,-0.0052948,-0.042877197,-0.07373047,0.039398193,-0.022567749,0.03237915,0.02949524,-0.0013341904,0.030517578,-0.022384644,-0.008033752,0.009757996,-0.018707275,-0.010894775,-0.022247314,-0.038879395,-0.027053833,-0.01676941,-0.021499634,0.02407837,-0.014144897,0.010925293,-0.00039553642,-0.01914978,0.016921997,0.006084442,-0.0016908646,0.016464233,0.0048217773,0.024368286,0.03768921,0.016357422,-0.04788208,0.015716553,-0.0082473755,0.010467529,-0.0067863464,0.041381836,0.022109985,-0.0044136047,-0.0079574585,-0.013671875,-0.011138916,-0.0236969,-0.0029735565,0.004924774,0.0039253235,-0.00046682358,-0.03414917,0.012466431,0.000031769276,-0.029342651,-0.033203125,0.018737793,0.01727295,-0.030975342,0.01675415,0.011795044,0.042236328,-0.017028809,0.002231598,0.0068740845,0.034698486,0.03463745,0.013687134,-0.008705139,0.022827148,-0.0012922287,0.022781372,-0.013259888,-0.015808105,0.026733398,0.0124053955,0.012527466,0.018081665,0.00004476309,-0.03274536,-0.036834717,0.0029315948,-0.006664276,-0.028686523,0.029525757,0.0073394775,0.025405884,-0.027404785,0.023101807,0.0025310516,-0.024154663,-0.019424438,-0.004196167,0.03945923,-0.01625061,-0.004337311,0.017700195,0.01171875,0.01727295,-0.055023193,-0.003643036,0.002796173,0.010231018,-0.01234436,-0.046661377,-0.03161621,-0.00007683039,0.03866577,0.0008559227,0.032836914,0.031188965,-0.01600647,0.009735107,0.016952515,-0.003730774,-0.015609741,-0.017608643,-0.044311523,-0.013687134,-0.0033416748,0.009086609,-0.03161621,0.010643005,-0.006679535,-0.032409668,0.015235901,-0.008148193,-0.0056648254,-0.019699097,0.014076233,0.039245605,-0.008544922,0.02558899,-0.016235352,-0.04748535,-0.007549286,0.0015497208,0.01411438,-0.051849365,0.009628296,-0.028533936,0.0018939972,0.0022468567,0.01739502,0.021484375,0.016998291,0.010429382,0.023284912,-0.045318604,0.05090332,-0.024017334,0.010154724,-0.00036764145,-0.045898438,-0.016906738,-0.021392822,-0.007205963,0.033569336,-0.02909851,-0.009506226,-0.027908325,-0.040161133,-0.01928711,-0.05609131,0.023208618,0.032470703,0.045135498,-0.024261475,-0.007160187,0.005897522,0.0103302,-0.015541077,0.005622864,-0.009284973,0.018371582,0.03692627,-0.005607605,-0.037384033,-0.031280518,-0.013114929,-0.013046265,-0.05404663,-0.061950684,-0.017547607,0.011306763,-0.0129470825,0.0070228577,-0.02067566,-0.0234375,0.00038909912,-0.0385437,0.005378723,0.0041885376,0.027832031,0.012527466,-0.030410767,-0.002357483,0.009178162,-0.01423645,0.037475586,0.00434494,-0.00819397,-0.037139893,0.005115509,0.012924194,0.031555176,-0.014183044,-0.02279663,-0.005302429,-0.015655518,-0.054016113,-0.0048179626,0.0033607483,-0.0055274963,-0.004852295,-0.0041618347,-0.052886963,-0.0025844574,-0.019699097,-0.018478394,0.017578125,0.008743286,0.0066833496,-0.0015687943,0.016494751,0.012130737,-0.01550293,-0.018569946,0.0035934448,0.011505127,0.008338928,0.032165527,0.053497314,0.0046463013,-0.025939941,-0.0009946823,0.0028152466,0.008781433,-0.02558899,0.008644104,-0.013832092,0.018127441,-0.014907837,-0.0087509155,-0.020614624,0.001121521,0.07598877,0.002046585,0.0044937134,-0.01348114,-0.0211792,0.014732361,0.0345459,-0.04067993,-0.0051651,-0.023361206,0.03012085,-0.015060425,0.006412506,0.013916016,0.017227173,-0.017440796,-0.050720215,-0.009361267,-0.015899658,-0.010368347,-0.06341553,-0.0211792,-0.07672119,0.0073547363,-0.014205933,-0.03137207,0.007575989,0.009246826,-0.029449463,-0.0826416,0.0019741058,0.06542969,0.0007157326,0.021057129,-0.019241333,0.0070114136,0.033813477,-0.03466797,-0.0019569397,0.013519287,-0.030929565,-0.03152466,-0.017562866,0.032592773,-0.005683899,-0.0032291412,0.0004284382,0.0046195984,0.012809753,-0.0070114136,0.013153076,-0.0018625259,0.026824951,-0.015289307,0.01411438,-0.010902405,-0.02520752,0.037353516,-0.050476074,0.029769897,0.015701294,-0.0024089813,0.016601562,0.03829956,0.037139893,-0.0385437,-0.018234253,0.0051078796,0.014183044,0.029632568,-0.01939392,0.0546875,0.007820129,-0.013458252,0.014007568,-0.011024475,-0.013214111,-0.016799927,-0.022903442,0.033325195,0.008041382,0.012413025,-0.021560669,-0.0040626526,0.014198303,0.01411438,0.006439209,-0.0071525574,-0.0018339157,-0.027191162,-0.007549286,0.00039052963,0.009773254,-0.0073013306,0.0335083,0.029006958,0.03338623,0.0043525696,-0.020751953,-0.0046958923,0.032073975,-0.0064086914,0.0011072159,0.024017334,0.014320374,0.016433716,0.011627197,0.008110046,-0.053497314,-0.01386261,-0.016738892,-0.017440796,0.0010881424,-0.012588501,-0.004798889,-0.010314941,-0.005783081,-0.006008148,-0.023666382,-0.0040397644,-0.036590576,-0.012367249,-0.0030956268,-0.016220093,0.021270752,0.008880615,0.012184143,-0.0015478134,-0.0029411316,0.031280518,-0.0020885468,-0.010032654,0.02407837,0.030792236,0.03189087,-0.025985718,-0.0024528503,-0.015220642,-0.017913818,-0.0006093979,-0.03829956,0.0107803345,0.04724121,-0.014007568,-0.00059223175,0.0030879974,0.032104492,-0.01108551,-0.0032348633,-0.0077056885,0.027832031,-0.0024261475,0.03845215,-0.0440979,0.021591187,0.010917664,-0.003206253,-0.0102005005,-0.023361206,-0.01902771,0.020721436,0.0016489029,-0.00037193298,0.03994751,0.014427185,0.025344849,-0.02142334,-0.026138306,0.011314392,-0.032989502,-0.01210022,0.016845703,-0.010559082,0.001876831,0.009849548,-0.02708435,0.026824951,-0.037994385,0.0075569153,0.009841919,0.009971619,-0.020874023,-0.0132751465,-0.0051193237,-0.009567261,-0.018127441,0.0036678314,-0.0037117004,0.05041504,0.021072388,0.034118652,0.04901123,0.015655518,-0.0072784424,-0.036987305,-0.02116394,-0.0006914139,-0.019439697,0.013320923,-0.019470215,0.03878784,0.035614014,0.0075683594,0.034484863,0.030166626,0.031143188,0.008361816,0.016906738,-0.010215759,0.017288208,-0.011413574,0.026000977,-0.007820129,0.03970337,-0.028549194,0.017715454,0.01739502,0.024902344,-0.010627747,0.035125732,0.076660156,0.013313293,-0.011054993,0.031585693,-0.009681702,-0.012794495,-0.0037822723,-0.028121948,0.045043945,0.0039749146,0.039245605,0.04547119,0.005241394,-0.007408142,0.026031494,-0.025238037,-0.01965332,0.06555176,0.024154663,-0.017578125,-0.006362915,-0.0008196831,0.014907837,-0.039001465,-0.028884888,0.022125244,-0.014625549,0.012008667,-0.0017213821,-0.023147583,-0.014007568,0.009849548,0.006439209,0.022018433,-0.0072250366,0.03060913,0.030441284,0.0049324036,0.02659607,0.0015010834,0.021438599,-0.027832031,-0.029037476,0.026901245,0.020233154,0.0038261414,-0.012176514,0.04067993,0.0154800415,0.049072266,0.04067993,-0.018035889,0.0053710938,0.031219482,0.0056533813,-0.0005850792,0.055664062,0.037994385,0.020568848,0.035705566,0.030731201,0.026672363,-0.037719727,0.024124146,0.0022735596,0.0074424744,-0.003168106,-0.010223389,0.008811951,-0.013664246,0.016586304,0.0048980713,-0.007575989,0.02734375,0.027526855,-0.006641388,-0.013717651,-0.0042495728,0.018295288,-0.018463135,0.0019483566,0.009521484,-0.016082764,0.035308838,0.0069618225,0.02998352,-0.012817383,0.020874023,-0.00737381,-0.01739502,-0.001244545,0.03793335,-0.04006958,0.000099122524,-0.008995056,0.0069084167,-0.04611206,0.008232117,0.023391724,-0.014305115,0.01737976,0.00077342987,-0.008468628,-0.010726929,0.034698486,0.0128479,-0.0057029724,-0.009536743,-0.01725769,0.02470398,0.044555664,-0.0032615662,0.005279541,-0.03289795,0.0021572113,0.008659363,-0.007408142,0.006729126,-0.018341064,-0.02722168,-0.0151901245,0.03805542,0.03475952,0.027877808,0.05899048,-0.03387451,-0.015434265,0.00497818,0.036590576,-0.00340271,0.00087976456,-0.00957489,0.025360107,-0.030929565,0.043945312,0.038391113,0.008651733,0.02885437,-0.0041503906,-0.015342712,0.012290955,-0.014640808,0.027328491,-0.018051147,0.004322052,-0.0012426376,0.031036377,-0.017425537,-0.036590576,0.010398865,-0.023895264,-0.02507019,-0.01878357,0.020828247,0.001821518,0.02507019,0.034606934,0.022994995,-0.019607544,0.06341553,-0.011802673,0.040161133,0.005870819,-0.009895325,0.04385376,0.009117126,0.025024414,0.02355957,0.015060425,-0.03717041,0.029449463,0.031585693,0.0184021,0.010101318,0.006690979,-0.013130188,0.04144287,-0.0039100647,0.029632568,-0.0082473755,-0.002380371,0.010688782,-0.0019702911,-0.01966858,-0.006996155,-0.002073288,0.00566864,0.054107666,-0.023208618,-0.0112838745,-0.021240234,-0.007858276,0.025756836,-0.0058403015,0.0009098053,-0.016052246,-0.015449524,0.006942749,-0.02949524,-0.029251099,0.008201599,0.027404785,-0.04220581,-0.018081665,0.0077056885,0.027145386,-0.028656006,0.029388428,0.028686523,-0.008842468,-0.0074882507,0.043426514,-0.0058250427,0.024536133,-0.016525269,0.03479004,0.038970947,0.006500244,-0.02809143,0.0029525757,0.006526947,-0.013290405,0.0119018555,0.029815674,-0.016494751,-0.005214691,-0.009849548,-0.010673523,-0.002752304,-0.001821518,-0.016143799,0.0064048767,-0.016815186,-0.0056152344,0.0014419556,0.016571045,0.0008325577,-0.0025157928,-0.010955811,-0.014266968,0.01108551,0.028961182,0.016342163,-0.033599854,-0.007671356,0.0024871826,0.0030021667,-0.020828247,-0.009735107,0.0033473969,-0.034973145,0.009353638,0.0076828003,0.015533447,0.017196655,-0.023880005,0.0013666153,0.02720642,0.009635925,0.0184021,0.0046424866,-0.0018701553,0.01914978,-0.0026817322,-0.0085372925,-0.008132935,-0.0067329407,0.0073127747,0.03152466,-0.006011963,-0.034606934,0.027770996,-0.0018625259,0.0132369995,0.0027942657,-0.013801575,0.020965576,-0.01727295,0.010848999,-0.0069351196,0.014923096,-0.010383606,-0.018814087,-0.009407043,0.037231445,0.055480957,-0.010818481,-0.0039405823,0.025848389,0.023269653,0.019973755,0.045013428,0.007987976,0.048980713,0.02217102,-0.020767212,-0.021438599,0.019454956,-0.0043258667,-0.02507019,0.012649536,0.004421234,0.0028839111,0.02748108,0.0017976761,0.0031528473,-0.02909851,-0.022109985,-0.020477295,-0.0096588135,0.004673004,-0.010627747,0.008285522,-0.02420044,-0.011253357,0.021011353,-0.034820557,-0.04827881,-0.012336731,-0.000080645084,-0.009063721,-0.05178833,0.004890442,-0.030380249,-0.002779007,-0.02130127,0.011253357,-0.014923096,0.020385742,-0.016326904,-0.007911682,0.0014343262,0.029281616,0.020401001,0.0051078796,0.022613525,-0.032226562,-0.021240234,-0.021972656,0.017120361,-0.016571045,0.014221191,0.008453369,0.027267456,0.02532959,-0.006324768,-0.0031166077,-0.011108398,-0.010322571,-0.011978149,-0.009521484,-0.027694702,0.027694702,0.01399231,-0.020019531,-0.008361816,0.039031982,-0.023376465,-0.009384155,0.026748657,0.040771484,0.0069007874,0.029525757,-0.02053833,0.0061683655,-0.025314331,-0.016845703,-0.023010254,0.0036678314,0.0045051575,0.002313614,-0.003921509,0.005996704,0.021514893,-0.019729614,-0.005176544,0.0357666,0.010177612,-0.007335663,0.030960083,0.016418457,0.0002593994,-0.01828003,-0.008361816,0.02748108,0.038391113,0.010887146,0.008277893,-0.004711151,0.012992859,-0.01159668,0.0056533813,0.018692017,-0.026123047,-0.047790527,-0.018249512,-0.028884888,0.025436401,-0.012939453,0.0069770813,-0.011833191,0.02784729,-0.0068588257,-0.027008057,-0.016220093,0.020111084,0.014587402,-0.0052490234,-0.008361816,0.0073928833,0.010307312,-0.027023315,0.0036773682,-0.048431396,-0.039916992,-0.025726318,-0.011634827,0.027008057,0.0041275024,-0.015136719,-0.007911682,0.00047135353,-0.0040626526,0.01184845,0.027496338,-0.018981934,0.0025081635,0.02696228,0.018341064,-0.025482178,0.02104187,-0.021438599,-0.006450653,0.008476257,-0.002298355,0.009597778,-0.023132324,0.041229248,-0.013137817,0.001364708,0.027877808,-0.011268616,0.017486572,-0.025054932,0.00059843063,-0.004459381,-0.004131317,0.03439331,-0.017211914,-0.00655365,0.0027446747,-0.009460449,-0.027328491,-0.002456665,0.024658203,0.033935547,0.0017614365,0.048034668,-0.014854431,-0.0051078796,0.009651184,0.004802704,-0.02027893,0.01309967,0.034423828,0.008529663,0.003200531,-0.009307861,-0.008728027,-0.0284729,-0.0025081635,0.0077667236,-0.0032730103,-0.01335907,0.0357666,0.018356323,0.04638672,-0.010040283,0.028823853,0.013046265,0.004322052,0.024719238,0.0019760132,0.04699707,-0.0020866394,-0.020935059,0.0025844574,-0.0022029877,-0.023284912,0.006061554,-0.00021386147,0.003107071,-0.041534424,0.018066406,-0.008911133,0.018310547,-0.0049362183,0.008079529,-0.023864746,-0.009506226,-0.034851074,-0.012329102,-0.030960083,0.0035686493,0.029525757,0.0005750656,0.03253174,-0.00031971931,-0.022415161,0.022018433,0.046966553,0.00050878525,-0.036132812,-0.010269165,0.020431519,0.00061130524,0.013847351,0.0009803772,-0.027191162,-0.02267456,-0.0127334595,-0.005508423,0.004878998,-0.005554199,0.016647339,0.018676758,0.0012845993,-0.010612488,0.030090332,-0.009147644,0.002380371,0.02532959,0.00868988,0.039489746,0.025054932,-0.018951416,0.017944336,0.011375427,-0.048950195,0.06842041,-0.0045776367,0.03857422,-0.024093628,0.014671326,-0.030899048,-0.025268555,-0.023406982,0.020599365],"createdAt":"2026-04-18T19:27:47.602Z","updatedAt":"2026-04-22T15:02:25.192Z","lastSeenAt":"2026-04-22T15:02:25.192Z","tsv":"'/api/v1/transfers/188':94,230 '/request':13,28 '0.02':12,27,62,121,164 '000':110 '0x8335':115 '20':109 '2913':116 '6':125 'accept':129 'access':100 'across':45 'actual':205 'advertis':105,138 'ai-inference' 'ai/ml':48 'analysi':142 'analyt':47 'api':5,20,37,72,99,173 'application/json':134 'attach':82 'base':8,23,69,111,118 'base network api' 'base-network' 'broader':136 'call':4,19,166 'caller':80 'challeng':104,209 'classif':145 'classification' 'confirm':216 'connect':182 'content':188 'convers':157 'crypto pay api' 'crypto-quotes' 'data':46,234 'data-analytics' 'decim':126 'descript':200 'detail':199 'doc':172 'document':167,223 'embed':146 'embeddings' 'enabl':36 'endpoint':44,55,92,128,139,204,218 'equal':120 'estim':154 'exampl':196 'exchang':149 'expect':231 'extrem':169 'feed':148 'finance-data' 'finance/web3':50 'form':215 'gas':153 'generat':159 'geocod':155 'geocoding' 'given':122 'header':86 'infer':49 'infrastructur':52 'input':228 'key':73 'limit':75 'list':96 'live':211 'low payment fee' 'lowpaymentfee.com':31 'maxamountrequir':107 'micropayment api' 'network':9,24,70 'offer':40 'openapi':192 'oper':220 'page':177 'paramet':229 'pay':2,17,58 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':57 'payment':85 'per':3,18,59,165 'platform':6,21,38,137 'post':130 'premium':98 'price':147,174 'prompt':184 'quot':152 'rate':74,150 'readm':176 'render':179 'request':60,89,131 'request/response':195 'requir':79 'return':133,206,236 'schema':193 'sentiment':141 'sentiment-analysis' 'serverless api' 'settl':64 'simpli':81 'spars':170 'specif':91 'subscript':77 'summar':144 'text':143 'text-summarization' 'token':151 'unclear':226 'unit':112 'usdc':15,30,66,114,123 'usdc api' 'usdc-settlement' 'util':53 'utility-apis' 'valid':156 'varieti':42 'via':10,25 'wallet':183 'well':214 'well-form':213 'without':222 'x402':11,26,35,84,103,208 'x402 api' 'x402-enabled':34 'x402-payment'","prices":[{"id":"83f1c46c-2733-4c75-8de8-6449ab018616","listingId":"35864af9-3d93-45ea-b877-5698aff93a55","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/188","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:27:47.602Z"}],"sources":[{"listingId":"35864af9-3d93-45ea-b877-5698aff93a55","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transfers/188","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:27:47.602Z","lastSeenAt":"2026-04-22T15:02:25.192Z"}],"details":{"listingId":"35864af9-3d93-45ea-b877-5698aff93a55","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transfers/188 \\\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":"All endpoints priced at $0.02 per request with no API keys, rate limits, or minimums","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network","source_url":"https://lowpaymentfee.com/api/v1/transfers/188"},{"claim":"Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Agent-driven API calls where no API key provisioning is desired","Micropayment-gated access to AI inference (sentiment, summarization, classification, embeddings)","On-demand financial data retrieval (prices, exchange rates, gas estimates)","Utility operations like geocoding, validation, and data conversion without subscriptions"],"bestFor":["AI agents that can settle x402 payments in USDC on Base","Developers wanting zero-signup, pay-as-you-go API access","Low-volume or bursty workloads where per-request pricing is economical"],"notFor":["High-volume production workloads needing SLAs or guaranteed uptime documentation","Users who need detailed API documentation, schemas, or example responses before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:34.072Z"},"updatedAt":"2026-04-22T15:02:25.192Z"}}