{"id":"3d4fd2e5-1500-46ce-8771-d35461148a67","shortId":"NEKnLT","kind":"x402","title":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request via USDC.","tagline":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request via USDC.","description":"lowpaymentfee.com is an x402-protocol API marketplace that gates a variety of endpoints behind per-request USDC micropayments on the Base network. The specific endpoint at `/api/v1/stripe/charges/139` is listed as \"Premium API Access\" and accepts POST requests. Payment is settled on-chain to a specified wallet address using USDC (contract 0x8335…2913 on Base), with a maximum amount of 20,000 base units — equivalent to $0.02 USD (USDC uses 6 decimals).\n\nThe broader 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 endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\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 documentation for any endpoint. The specific functionality behind the `/api/v1/stripe/charges/139` path is unclear; the name \"Premium API Access\" and the path segment \"stripe/charges\" suggest it may relate to Stripe charge data or payment processing, but this is speculative. The endpoint is confirmed live via a valid 402 challenge response.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","per-request-billing","no-api-key","post-endpoint"],"categories":["api-marketplace","payments"],"synonyms":["x402 API","micropayment API","pay-per-request API","USDC API access","Base network API","lowpaymentfee","stripe charges API"],"warnings":["No documentation available — /docs, /api, /pricing, and /README all return only a 'Connect wallet' prompt with no content.","No OpenAPI or schema definition found for any endpoint.","The specific purpose of /api/v1/stripe/charges/139 ('Premium API Access') is unclear; the path suggests Stripe charge data but this is unconfirmed.","No request or response examples are available anywhere in the crawled material."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/139","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/stripe/charges/139","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 via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, no documentation beyond a wallet-connect prompt, and the actual functionality of this specific endpoint is unclear. 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":"2026-04-19T09:17:35.086Z","embedding":[-0.026443481,-0.023025513,0.01210022,-0.00055122375,0.001004219,-0.012710571,-0.044921875,0.024642944,0.05267334,-0.070495605,0.02949524,-0.03427124,-0.047546387,-0.027770996,-0.036987305,-0.0024204254,-0.021896362,0.025909424,-0.056854248,0.064453125,0.04812622,-0.0058631897,-0.004322052,0.024795532,-0.008239746,-0.024642944,0.010864258,-0.016143799,-0.033843994,-0.018203735,0.026855469,-0.027282715,-0.011024475,0.01687622,0.00009417534,-0.022964478,-0.0059280396,0.04135132,0.031677246,0.0023269653,-0.00258255,-0.0569458,0.018493652,-0.0076828003,-0.03982544,0.0032806396,0.023834229,-0.011856079,-0.007888794,0.0019207001,-0.03527832,-0.016906738,-0.024291992,0.017166138,0.015823364,0.020202637,0.003458023,-0.012268066,0.016677856,0.022918701,0.0069084167,-0.061645508,-0.0039787292,-0.004257202,0.0046806335,0.064819336,-0.0096206665,0.046905518,0.0039482117,0.06185913,0.027557373,0.036834717,0.037994385,0.0048942566,0.008239746,-0.025238037,0.003660202,0.06695557,-0.015129089,0.010253906,-0.012123108,0.00048732758,-0.07055664,-0.028717041,-0.013771057,-0.06542969,-0.018737793,-0.0009455681,-0.03765869,0.030715942,-0.07720947,-0.028717041,-0.01725769,0.0011758804,0.00093603134,0.0036640167,-0.02482605,0.010032654,0.002735138,0.009246826,-0.0024795532,-0.041503906,-0.0034389496,0.023605347,0.04498291,0.032165527,0.023834229,0.053833008,-0.0074272156,-0.006942749,-0.029953003,0.018447876,-0.0134887695,-0.030517578,0.029922485,0.021408081,-0.004524231,0.034179688,-0.02142334,0.0077171326,-0.058502197,0.043121338,0.02281189,-0.004711151,0.013412476,-0.031585693,-0.009117126,0.007785797,-0.04421997,-0.029251099,0.019104004,0.0062446594,0.03829956,-0.034118652,-0.025863647,-0.0011320114,0.0015249252,-0.034484863,-0.04916382,-0.016616821,0.042388916,-0.020248413,0.035003662,0.024993896,-0.07879639,-0.008270264,-0.052947998,0.024963379,-0.04248047,-0.006793976,0.012886047,0.038970947,-0.0149002075,-0.013198853,-0.031829834,-0.016281128,-0.013298035,0.030929565,-0.008041382,0.01927185,-0.025482178,0.027130127,0.013122559,0.009735107,0.016952515,0.035125732,-0.0064811707,-0.09838867,-0.081848145,-0.02973938,-0.017120361,-0.017807007,-0.048828125,-0.0066947937,-0.008911133,-0.07727051,-0.03186035,-0.015571594,0.0034122467,-0.05630493,-0.016677856,-0.014640808,0.011390686,-0.030273438,-0.059753418,-0.0071372986,-0.020965576,0.059631348,0.018920898,0.02935791,0.021057129,0.0064811707,0.049560547,0.028884888,-0.018554688,-0.038757324,0.011367798,-0.018707275,0.040740967,0.0027198792,0.014442444,-0.031188965,0.038024902,0.052978516,0.01927185,-0.02142334,-0.006565094,-0.0435791,-0.024124146,-0.024017334,0.003835678,-0.0009889603,-0.026947021,0.033233643,-0.038360596,-0.028289795,-0.008079529,-0.00001770258,0.034484863,0.054107666,0.012138367,0.0010080338,0.008361816,0.012435913,-0.035491943,0.04537964,0.03111267,0.013641357,-0.005256653,-0.024383545,0.02180481,0.04626465,-0.03463745,-0.0038013458,-0.008903503,0.009162903,-0.0034255981,-0.015914917,0.017059326,-0.019302368,-0.026626587,-0.009552002,-0.00554657,0.023727417,0.022537231,-0.030792236,-0.043762207,-0.074523926,0.02796936,0.047088623,0.04034424,-0.003572464,-0.01675415,-0.020202637,-0.017089844,-0.07885742,0.046295166,0.07354736,-0.0020942688,-0.0063209534,0.03829956,-0.008720398,-0.04812622,-0.015136719,0.002855301,-0.012641907,-0.024475098,0.026626587,-0.045440674,-0.0003502369,0.02557373,0.019363403,0.05255127,-0.03253174,-0.03286743,-0.03274536,0.00041556358,0.0020866394,-0.023498535,0.021743774,-0.001906395,0.008125305,0.038208008,0.009384155,0.017425537,0.014503479,0.021209717,-0.026824951,-0.002954483,-0.025634766,-0.027908325,0.019561768,-0.00440979,-0.055725098,0.027008057,-0.02355957,0.06573486,-0.041290283,0.027236938,-0.007713318,0.038757324,0.03353882,-0.006008148,-0.03604126,0.007381439,0.022338867,0.017868042,0.04699707,0.011146545,0.002872467,-0.009338379,0.0440979,-0.0061569214,-0.017364502,-0.002954483,0.022094727,0.032836914,0.009468079,-0.061157227,-0.042510986,-0.00039696693,-0.022857666,0.03665161,-0.027297974,0.049743652,-0.023422241,0.004524231,-0.027633667,0.006866455,-0.046447754,0.024459839,-0.020568848,-0.0031967163,-0.011001587,-0.03302002,0.008232117,0.013771057,-0.011497498,0.008415222,0.042236328,0.01348114,-0.039855957,-0.025863647,-0.018920898,-0.023605347,-0.0046653748,0.020736694,0.0032405853,0.027694702,0.039642334,-0.04824829,0.015808105,0.009025574,-0.005176544,0.012565613,0.00014686584,0.013580322,-0.061584473,-0.042419434,-0.025146484,-0.035827637,0.020080566,-0.016860962,0.013183594,0.049835205,0.00592041,-0.03375244,-0.04244995,0.010177612,-0.053375244,0.013450623,0.027038574,-0.0061302185,-0.04309082,0.00006121397,0.0020942688,-0.0010089874,0.04586792,0.012275696,0.0024814606,0.06945801,0.022155762,0.017333984,0.016830444,0.008880615,0.023239136,-0.003686905,-0.023254395,-0.037719727,0.0029582977,0.029800415,-0.02406311,-0.028671265,-0.064697266,0.041259766,0.019348145,0.056671143,0.016601562,0.00484848,0.03390503,0.010429382,0.0071792603,-0.031173706,-0.011947632,-0.03640747,-0.02545166,0.021560669,-0.009559631,-0.0011739731,-0.032196045,0.02532959,-0.010597229,0.0059890747,-0.030654907,0.047821045,-0.018173218,-0.001042366,0.0026798248,0.019546509,0.0703125,0.0579834,-0.06347656,0.002822876,0.010383606,-0.023483276,0.0018568039,0.050720215,0.0008392334,-0.026885986,-0.053894043,-0.03366089,0.004699707,-0.013221741,-0.068725586,0.0017194748,0.009918213,0.037017822,0.006580353,0.0013446808,-0.04385376,0.001917839,-0.035247803,-0.06323242,-0.0033302307,-0.046173096,0.011062622,0.031585693,-0.044525146,0.0052604675,-0.0077934265,-0.0009613037,-0.01725769,0.006225586,0.0104904175,-0.003566742,-0.04989624,0.029907227,0.022323608,0.015434265,0.025848389,0.045806885,0.035461426,-0.0025043488,0.05255127,0.0043029785,-0.019561768,-0.041137695,0.006275177,-0.02218628,0.007320404,0.009651184,-0.018798828,0.0055503845,-0.007713318,-0.04663086,-0.029815674,0.0036907196,-0.020431519,-0.0012617111,0.016601562,-0.047668457,-0.015396118,-0.064575195,-0.023529053,-0.013092041,0.08532715,0.0051116943,-0.01058197,-0.06555176,-0.00818634,0.03213501,0.010414124,0.02482605,-0.015716553,-0.02772522,-0.020202637,-0.0418396,-0.019058228,-0.035461426,0.027160645,0.0071105957,-0.02281189,0.01890564,0.017669678,0.025558472,-0.0068130493,0.009094238,0.016677856,-0.016082764,-0.009765625,-0.03817749,0.00031518936,0.009147644,-0.011306763,-0.03768921,0.054992676,-0.005016327,0.05593872,-0.03704834,-0.0058670044,-0.009407043,0.011329651,0.028900146,-0.023147583,-0.008003235,0.0066223145,-0.03982544,-0.06585693,0.009101868,-0.01876831,0.015716553,-0.0037841797,0.013618469,0.036499023,-0.021453857,0.016952515,0.01373291,-0.019927979,-0.0017089844,-0.014007568,-0.02758789,-0.01878357,0.0074691772,-0.014038086,0.0066375732,-0.012031555,0.0026054382,-0.005218506,-0.01828003,0.044708252,0.029769897,0.0007748604,0.0423584,-0.005493164,0.029693604,0.046966553,0.007030487,-0.038757324,0.022338867,0.007888794,-0.007820129,-0.018753052,0.037231445,0.02331543,-0.014038086,-0.0009613037,-0.00017786026,0.0015611649,-0.012130737,-0.011802673,0.025024414,0.037353516,0.00957489,-0.04598999,0.020767212,0.01966858,-0.03152466,-0.016464233,0.018112183,0.015434265,-0.032958984,0.027511597,0.034820557,0.050445557,-0.021347046,0.014266968,0.0019359589,0.039154053,0.020721436,0.01109314,-0.0064048767,0.0049552917,-0.013809204,0.012298584,0.00063562393,-0.00819397,0.012535095,0.007091522,0.023773193,0.03173828,0.0059318542,-0.026794434,-0.019210815,0.0079574585,-0.0071372986,-0.021697998,0.023803711,0.010826111,0.017181396,-0.013198853,0.038269043,0.025558472,-0.0390625,-0.015914917,0.0054397583,0.028198242,-0.024887085,-0.0035629272,0.01928711,-0.015167236,0.03375244,-0.06088257,-0.0012359619,-0.0028572083,0.011116028,-0.016983032,-0.036865234,-0.033233643,-0.0050468445,0.034362793,0.008544922,0.01335907,0.03302002,0.013366699,0.010673523,0.02029419,0.014450073,0.0028476715,-0.009552002,-0.062927246,-0.015670776,-0.010238647,0.011756897,-0.041412354,0.018463135,-0.024902344,-0.035095215,0.02305603,-0.019577026,0.0112838745,-0.00077199936,0.01222229,0.0256958,0.006046295,0.016113281,-0.0061912537,-0.029144287,-0.004005432,-0.0008983612,0.029815674,-0.00969696,0.005088806,-0.022109985,0.00060272217,-0.013374329,0.0013074875,0.028640747,0.040100098,0.0022850037,0.02684021,-0.026901245,0.05307007,-0.030731201,0.014907837,-0.0059661865,-0.024932861,-0.02180481,-0.03366089,-0.019699097,0.033447266,-0.015075684,0.015640259,-0.00374794,-0.030151367,-0.010391235,-0.050476074,0.009490967,0.021118164,0.047210693,-0.029525757,0.00061655045,0.010688782,0.01676941,-0.017593384,0.007080078,-0.004611969,0.002746582,0.027832031,0.011833191,-0.0069503784,-0.014762878,-0.02154541,0.0019464493,-0.07080078,-0.047424316,-0.018661499,0.027862549,0.0022850037,-0.011642456,-0.008758545,-0.03262329,0.0010032654,-0.034851074,0.018829346,-0.010314941,0.024139404,0.0057029724,-0.024536133,-0.01071167,0.0103302,-0.02281189,0.019561768,-0.011917114,-0.0031356812,-0.031341553,-0.004722595,0.033050537,0.00970459,0.021743774,-0.017486572,-0.0047798157,-0.026489258,-0.037231445,0.00995636,-0.014289856,0.011108398,0.0037841797,-0.003446579,-0.050231934,-0.016708374,-0.025222778,-0.010093689,0.009147644,0.014144897,0.012046814,-0.01739502,-0.002609253,-0.004234314,-0.014129639,-0.035858154,0.007537842,0.011558533,0.01890564,0.019943237,0.045135498,-0.012557983,-0.00044488907,-0.012557983,0.005176544,0.040252686,-0.024841309,0.013809204,0.0017642975,0.014953613,-0.0037841797,-0.002937317,-0.030334473,0.0037174225,0.062927246,0.017242432,0.004508972,0.0012989044,-0.0026187897,0.022003174,0.022842407,-0.03543091,-0.010574341,-0.043914795,0.03060913,-0.016616821,0.0037136078,0.0029907227,0.015777588,-0.024353027,-0.059906006,-0.002418518,0.014678955,-0.013473511,-0.054626465,-0.010635376,-0.05609131,-0.007820129,-0.020050049,-0.019821167,-0.008712769,0.0024604797,-0.01651001,-0.08013916,0.02418518,0.048950195,0.012039185,0.030273438,-0.012207031,0.029464722,0.037719727,-0.011413574,-0.004989624,0.021453857,-0.018615723,-0.032714844,-0.024642944,0.04537964,-0.00920105,-0.01852417,0.0037612915,0.0121154785,0.02520752,0.011184692,0.017211914,-0.017089844,0.022125244,0.011161804,0.011581421,-0.007167816,-0.018295288,0.035339355,-0.058258057,0.022613525,-0.0032920837,-0.004749298,-0.0026359558,0.034606934,0.04284668,-0.04421997,-0.00031280518,0.0206604,-0.0024356842,0.047790527,-0.022155762,0.050994873,0.019500732,-0.0030155182,0.000035464764,0.0002861023,-0.012588501,-0.03857422,-0.034973145,0.03326416,0.011962891,0.009506226,-0.008926392,-0.003522873,0.011947632,-0.01777649,0.009010315,-0.019866943,0.0017185211,-0.006587982,-0.0006775856,0.008300781,0.009567261,0.0017576218,0.032043457,0.014961243,0.038269043,0.004863739,-0.004901886,0.011268616,0.036193848,-0.0034389496,-0.000022351742,0.02330017,0.016693115,0.026184082,0.010932922,0.011642456,-0.0345459,-0.012023926,0.004711151,-0.005203247,-0.0006508827,-0.023620605,0.009735107,-0.0121536255,0.00012922287,0.00058603287,-0.027862549,0.014320374,-0.019851685,-0.024505615,-0.013122559,-0.0105896,0.013954163,0.0079956055,-0.0034332275,0.018951416,0.003835678,0.07043457,0.00009697676,0.0046043396,0.035186768,0.03366089,0.019958496,-0.03164673,-0.007987976,-0.010826111,0.01625061,0.011749268,-0.022262573,0.014160156,0.043151855,-0.008071899,0.027374268,-0.011169434,0.011817932,0.004550934,0.015060425,-0.014724731,0.00014936924,-0.02607727,0.052612305,-0.04107666,0.026809692,0.018997192,0.006111145,-0.0029964447,-0.024993896,-0.029815674,0.027435303,0.0051651,0.005844116,0.033355713,-0.0048217773,0.020965576,-0.022979736,-0.027008057,0.0022945404,-0.017303467,-0.03213501,0.024047852,-0.003025055,0.0076026917,0.0028266907,-0.02619934,0.020843506,-0.040283203,0.016677856,0.002008438,0.004096985,-0.021224976,-0.016586304,-0.020339966,-0.019317627,-0.020935059,0.011909485,-0.0020751953,0.02319336,0.03491211,0.017410278,0.033843994,0.0071868896,-0.00066661835,-0.027160645,-0.025802612,-0.0032844543,-0.03149414,-0.009216309,-0.00945282,0.026916504,0.052612305,0.010848999,0.031921387,0.036346436,0.037353516,0.0018587112,0.024139404,-0.025405884,0.022842407,-0.028930664,0.034576416,0.011985779,0.03289795,-0.025787354,0.0010328293,-0.00084352493,0.023620605,-0.019699097,0.023391724,0.07965088,0.022766113,-0.0029773712,0.048828125,-0.011054993,-0.002922058,-0.029174805,-0.02407837,0.07232666,0.029251099,0.05303955,0.03591919,0.0040359497,-0.0065231323,0.013122559,-0.019744873,-0.014587402,0.06222534,0.010299683,-0.030044556,-0.021743774,-0.01361084,0.012611389,-0.030715942,-0.017288208,0.01977539,-0.018508911,0.0070114136,-0.017669678,-0.016357422,-0.007896423,0.0073127747,0.0008392334,0.013305664,-0.023147583,-0.0024051666,0.019744873,0.004306793,0.021896362,0.0007200241,0.03274536,-0.032043457,-0.024658203,0.00094270706,0.01486969,0.0116119385,0.016204834,0.037719727,0.027694702,0.024475098,0.031219482,-0.015029907,-0.011688232,0.023773193,0.008079529,-0.010116577,0.039886475,0.043304443,0.01663208,0.027908325,0.04043579,0.032226562,-0.034332275,0.015701294,-0.0075302124,0.008453369,-0.0077400208,-0.028015137,0.012062073,0.007293701,0.008918762,-0.010093689,0.0002770424,0.025558472,0.021057129,-0.021530151,0.0021629333,0.00041365623,0.011260986,0.00018274784,0.0044898987,0.0012235641,-0.024353027,0.017837524,0.020736694,0.032226562,-0.03967285,0.022354126,-0.0016622543,-0.029815674,-0.0035552979,0.0038928986,-0.030090332,0.010681152,-0.0065956116,-0.009002686,-0.025268555,0.011688232,0.0052871704,-0.0032997131,0.01361084,0.0072135925,-0.002828598,-0.0016202927,0.015327454,0.020904541,-0.0048446655,-0.0031585693,-0.01134491,0.021972656,0.04824829,0.0013570786,0.014373779,-0.024459839,0.007347107,0.012214661,-0.01651001,-0.009880066,0.014694214,-0.012611389,-0.016036987,0.013259888,0.044830322,0.016998291,0.03125,-0.011459351,-0.009483337,0.011482239,0.021697998,0.007785797,0.0010232925,0.014289856,0.032104492,-0.010047913,0.04498291,0.033172607,-0.005809784,0.026351929,-0.0046920776,0.004863739,-0.0060539246,-0.035186768,0.028289795,-0.034362793,0.015655518,-0.013542175,0.022766113,-0.014389038,-0.038604736,0.015487671,-0.009010315,-0.02722168,-0.028396606,0.015129089,-0.003019333,0.01626587,0.033050537,0.02861023,-0.030960083,0.06329346,-0.0031585693,0.06781006,-0.0011749268,0.0040626526,0.043914795,0.04046631,0.039794922,0.008049011,0.017410278,-0.020706177,-0.00044035912,0.04421997,0.026321411,0.010971069,0.01449585,0.00030326843,0.053833008,-0.007850647,0.027908325,-0.019104004,-0.002773285,0.0019445419,0.0050315857,-0.0050086975,0.0005660057,-0.0035057068,0.027175903,0.054382324,-0.032104492,-0.021896362,-0.042022705,-0.002922058,0.028442383,-0.014213562,0.014450073,0.0014467239,-0.018203735,0.01285553,-0.029037476,-0.011207581,0.022705078,0.029449463,-0.04421997,-0.037231445,0.008201599,0.022872925,-0.021484375,0.029556274,0.023162842,-0.016616821,0.011917114,0.055145264,0.0039253235,0.0446167,0.0043525696,0.029586792,0.046844482,-0.003156662,-0.027282715,-0.00007104874,0.018096924,-0.004901886,0.014587402,0.033447266,-0.0051193237,0.0072402954,-0.001241684,-0.022338867,-0.0079956055,0.011291504,-0.016494751,-0.0018539429,0.0016365051,-0.012435913,0.019454956,0.0061569214,0.007003784,-0.000012993813,-0.0019330978,-0.0096206665,0.011497498,0.018966675,0.02909851,-0.04269409,0.0021820068,0.017059326,-0.013412476,-0.023834229,-0.018157959,-0.009048462,-0.027053833,0.022583008,0.026016235,0.03111267,-0.0025424957,-0.023590088,0.008201599,0.03768921,0.01411438,0.018661499,0.010543823,-0.01687622,0.004673004,-0.018188477,-0.00819397,-0.0027542114,0.0036830902,-0.0062179565,0.012512207,-0.007083893,-0.01360321,0.03289795,0.01322937,0.019943237,-0.00333786,-0.0033035278,0.026046753,-0.005947113,-0.02607727,0.002544403,0.014167786,0.0032958984,-0.01991272,-0.023651123,0.028015137,0.043304443,-0.00349617,0.0012397766,0.016143799,0.021438599,0.033813477,0.03414917,0.013702393,0.038024902,0.018447876,-0.005290985,-0.00060606,0.028778076,-0.007637024,-0.028961182,0.02168274,0.0029659271,-0.03265381,0.027770996,-0.004524231,-0.016738892,-0.02331543,-0.024658203,-0.0017375946,-0.019607544,0.0134887695,-0.0019111633,0.012542725,-0.029067993,-0.019836426,0.0030155182,-0.009101868,-0.04458618,-0.011192322,-0.014198303,-0.02456665,-0.054656982,-0.0019493103,-0.02381897,0.005115509,-0.028198242,-0.009346008,-0.007083893,0.019134521,-0.015357971,0.007637024,-0.0054016113,0.034423828,0.0046958923,0.010856628,0.010368347,-0.01902771,-0.016021729,-0.01272583,-0.013000488,-0.02104187,0.026916504,-0.0074539185,0.04623413,-0.00021612644,-0.020050049,0.0027828217,-0.017074585,-0.0038414001,0.010681152,-0.027053833,-0.02973938,0.018753052,0.026062012,-0.015686035,0.0014286041,0.041015625,-0.018173218,-0.02532959,0.015670776,0.041107178,0.011291504,0.042053223,-0.014884949,0.0036125183,-0.022384644,0.002090454,-0.014411926,-0.0034980774,-0.00095653534,-0.0033626556,0.008018494,0.008377075,0.009757996,-0.016357422,-0.025238037,0.02583313,0.019119263,-0.02607727,0.04837036,0.017822266,0.009735107,-0.0112838745,-0.008163452,0.018325806,0.054473877,0.013664246,0.021835327,-0.009056091,0.015113831,-0.015686035,0.01322937,0.00020122528,-0.014549255,-0.03353882,-0.018585205,-0.010772705,0.008049011,-0.004638672,0.02619934,-0.0063476562,0.024093628,-0.008735657,-0.025924683,-0.019683838,0.01828003,-0.00003540516,-0.019104004,-0.0137786865,0.0129852295,0.017959595,-0.02444458,0.014549255,-0.03665161,-0.028717041,-0.01676941,-0.014724731,0.03616333,0.0008778572,-0.0042533875,0.012481689,-0.002483368,-0.0062179565,-0.0022659302,0.034576416,-0.011459351,0.008308411,0.016525269,0.01966858,-0.01928711,0.018066406,0.0053710938,-0.015670776,0.0209198,-0.011054993,0.023834229,-0.0066223145,0.04147339,0.015792847,0.004257202,0.036987305,-0.0059890747,0.01373291,-0.0073280334,-0.023803711,-0.0020542145,-0.0031261444,0.031188965,-0.007247925,-0.012916565,0.008056641,-0.015541077,-0.033081055,0.012512207,0.014167786,0.04498291,-0.03201294,0.04727173,-0.013793945,-0.009162903,-0.012359619,0.014793396,-0.017959595,0.0011749268,0.024124146,0.008705139,0.009559631,-0.007091522,-0.019851685,-0.006969452,-0.009674072,0.011940002,-0.008987427,-0.010192871,0.00010281801,0.010551453,0.03930664,0.005886078,0.012527466,0.031585693,0.0074539185,0.033966064,-0.009902954,0.02748108,-0.0014944077,-0.022460938,-0.004058838,0.006389618,-0.00642395,0.0037174225,-0.005214691,0.014671326,-0.03338623,0.013916016,-0.009162903,0.04815674,-0.021316528,0.015182495,-0.025299072,0.0006227493,-0.030731201,0.015007019,-0.030303955,0.0013694763,0.04272461,-0.0015277863,0.012199402,0.0029945374,-0.016967773,0.033447266,0.050323486,-0.0013475418,-0.029449463,-0.008071899,0.003610611,-0.0020065308,-0.008979797,0.015533447,-0.026138306,-0.010314941,-0.004508972,-0.013786316,-0.0031719208,-0.006252289,0.008811951,0.022354126,0.0077781677,-0.013450623,0.038604736,-0.014320374,0.0096206665,-0.003862381,-0.001121521,0.027496338,0.03491211,-0.030548096,0.028366089,0.010826111,-0.021713257,0.05053711,-0.017074585,0.016098022,-0.025405884,0.0047798157,-0.021591187,-0.011108398,-0.00040769577,0.0075645447],"createdAt":"2026-04-18T18:53:50.695Z","updatedAt":"2026-04-22T20:01:24.113Z","lastSeenAt":"2026-04-22T20:01:24.113Z","tsv":"'/api':180 '/api/v1/stripe/charges/139':67,216 '/docs':179 '/pricing':181 '/readme':183 '/request':17,36 '0.02':16,35,107,159 '000':102 '0x8335':92 '20':101 '2913':93 '402':253 '6':111 'Base network API' 'USDC API access' 'accept':75 'access':73,224 'address':88 'advertis':116 'ai':10,29,128 'amount':99 'analysi':132 'analyt':122 'api':4,23,45,72,120,164,223 'base':7,26,61,95,103 'base-network' 'behind':53,214 'broader':114 'categori':118 'chain':83 'challeng':254 'charg':236 'classif':135 'commit':172 'confirm':248 'connect':189 'content':195 'contract':91 'convers':152 'data':9,28,121,125,237 'decim':112 'detail':206 'document':174,207 'embed':136 'endpoint':14,33,52,65,155,210,246 'equival':105 'estim':146 'exampl':203 'exchang':141 'export':126 'extrem':176 'feed':140 'financ':11,30,137 'four':117 'function':213 'gas':145 'gate':3,22,48 'generat':153 'geocod':150 'infrastructur':148 'insight':127 'key':165 'learn':130 'limit':168 'list':69,157 'live':249 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':129 'marketplac':46 'maximum':98 'may':232 'metric':123 'micropay':58 'micropayment API' 'minimum':171 'name':221 'network':62 'no-api-key' 'offer':8,27 'on-chain':81 'openapi':199 'page':184 'path':217,227 'pay-per-request API' 'payment':78,239 'per':55,160 'per-request':54 'per-request-billing' 'platform':5,24,115 'post':76 'post-endpoint' 'premium':71,222 'price':139 'process':240 'prompt':191 'protocol':44 'quot':144 'rate':142,167 'relat':233 'render':186 'report':124 'request':56,77,161 'request/response':202 'requir':173 'respons':255 'schema':200 'segment':228 'sentiment':131 'settl':80 'spars':177 'specif':64,212 'specifi':86 'specul':244 'stripe':235 'stripe charges API' 'stripe/charges':229 'suggest':230 'summar':134 'text':133 'token':143 'unclear':219 'unit':104 'usd':108 'usdc':19,38,57,90,109 'usdc-micropayment' 'use':89,110 'util':13,32,149 'valid':151,252 'varieti':50 'via':18,37,250 'wallet':87,190 'web3':138 'x402':2,21,43 'x402 API' 'x402-gated':1,20 'x402-payment' 'x402-protocol':42","prices":[{"id":"5c4affa0-bb2e-4447-ba66-ad54b09c76f7","listingId":"3d4fd2e5-1500-46ce-8771-d35461148a67","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/stripe/charges/139","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:53:50.695Z"}],"sources":[{"listingId":"3d4fd2e5-1500-46ce-8771-d35461148a67","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/139","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:53:50.695Z","lastSeenAt":"2026-04-22T20:01:24.113Z"}],"details":{"listingId":"3d4fd2e5-1500-46ce-8771-d35461148a67","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/139 \\\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 valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Base network.","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/139"},{"claim":"All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/139"}],"useCases":["Accessing premium API data with per-call USDC micropayments on Base","Programmatic pay-as-you-go API consumption without API key management","Agent-driven API calls settled via x402 on-chain payments"],"bestFor":["Developers wanting zero-commitment, pay-per-call API access","AI agents that can settle x402 USDC payments on Base","Users who prefer on-chain micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","High-volume consumers who need bulk pricing or rate-limit guarantees","Developers without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:57.176Z"},"updatedAt":"2026-04-22T20:01:24.113Z"}}