{"id":"6a977de3-4663-479f-9661-fe924a6bccc1","shortId":"VmknVb","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides pay-per-request API access using the x402 protocol, settling payments in USDC on the Base network. The specific resource `/api/v1/lab/results/65` is listed under \"Premium API Access\" and costs up to $0.02 per call (maxAmountRequired of 20,000 base units of USDC with 6 decimals = $0.02). No API keys, rate limits, or upfront commitments are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader lowpaymentfee.com platform advertises a wide catalog of endpoints spanning 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 uniformly priced at $0.02 per request.\n\nHowever, the specific endpoint `/api/v1/lab/results/65` does not clearly map to any of the documented categories on the landing page. Its path suggests it may return lab or experimental results for a resource with ID 65, but no further documentation, request schema, or response schema is available. The endpoint is confirmed live (returns a proper 402 x402 challenge), accepts POST requests, and returns application/json.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response","post-method"],"categories":["data","api-marketplace"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium data endpoint","crypto-paid API"],"warnings":["The specific path /api/v1/lab/results/65 is not documented on the provider's landing page and its purpose is unclear.","No request body schema or response schema is available — callers cannot know what to send or what to expect back.","The broader site lists many endpoint categories but provides no detailed API documentation for any of them.","Pages at /api, /pricing, and /README returned only a 'Connect wallet' prompt with no useful content."],"endpointUrl":"https://lowpaymentfee.com/api/v1/lab/results/65","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/lab/results/65","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, but there is no documentation on what `/api/v1/lab/results/65` actually returns, no request or response schema, and the path doesn't match any documented category on the site. Pricing is clear ($0.02/request in USDC on Base). The listing is essentially a stub with confirmed liveness.","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":"2026-04-21T22:32:05.959Z","embedding":[-0.0075950623,-0.030075073,0.04888916,0.015670776,0.019073486,-0.023529053,-0.023895264,0.029663086,0.07293701,-0.08892822,0.034698486,-0.055847168,-0.027267456,-0.027572632,-0.024917603,0.0034751892,-0.0015773773,0.013771057,-0.049621582,0.021194458,0.030517578,-0.026229858,-0.022109985,0.015991211,-0.0020484924,-0.028793335,0.0020103455,-0.013313293,-0.002696991,-0.037475586,0.024642944,-0.02659607,-0.01739502,0.016860962,-0.028869629,-0.022216797,0.0024318695,0.041107178,0.017730713,-0.021591187,-0.0061836243,-0.05895996,0.004005432,0.008506775,-0.048797607,-0.0051651,0.012458801,-0.03579712,0.002248764,-0.021026611,-0.034973145,-0.003522873,0.0014724731,-0.011749268,0.009933472,0.008911133,0.0044784546,-0.018554688,0.014671326,0.012016296,0.010620117,-0.06298828,0.00037169456,-0.014434814,0.009841919,0.064331055,-0.016204834,0.03994751,0.025024414,0.058013916,0.040740967,0.06378174,0.025878906,0.017166138,-0.014968872,-0.0029716492,0.0027923584,0.05105591,-0.024520874,-0.031463623,-0.017105103,-0.022888184,-0.018936157,-0.0012245178,-0.005680084,-0.05117798,-0.014549255,0.007633209,-0.0082473755,0.020095825,-0.07019043,-0.015930176,0.0051231384,0.010772705,0.017120361,-0.008293152,-0.0005340576,0.012283325,-0.006855011,0.009147644,0.01474762,-0.03250122,0.019592285,0.014122009,0.03062439,0.04623413,0.0078048706,0.033721924,0.0066108704,-0.01687622,-0.010635376,0.013442993,-0.022964478,-0.009819031,-0.0024318695,0.008346558,-0.021942139,0.009819031,-0.035095215,0.0149002075,-0.053497314,0.05368042,0.024154663,-0.022033691,0.018508911,-0.03845215,0.0038146973,-0.004283905,-0.011367798,-0.012046814,0.02468872,0.006126404,0.041870117,-0.012573242,-0.05456543,0.015007019,-0.011619568,-0.022216797,-0.06750488,-0.040527344,0.048309326,-0.025802612,0.030532837,0.03277588,-0.08270264,-0.008491516,-0.03918457,0.012245178,-0.008972168,0.004043579,0.0024738312,0.029769897,-0.029800415,-0.0070152283,-0.027908325,-0.032714844,0.010925293,0.024642944,-0.028518677,0.051849365,-0.0037841797,0.033203125,0.027709961,0.004020691,0.028869629,0.035858154,-0.00031733513,-0.06311035,-0.08526611,-0.008979797,-0.017211914,-0.016937256,-0.03048706,0.011070251,-0.013656616,-0.043518066,-0.013442993,-0.013877869,0.011604309,-0.038757324,-0.0062675476,-0.028869629,0.007972717,-0.0027484894,-0.062805176,-0.030670166,-0.023376465,0.07318115,0.018936157,0.025604248,0.03656006,-0.017242432,0.07281494,0.029205322,-0.025283813,-0.028442383,0.037200928,-0.012496948,0.0047035217,0.004283905,-0.0031909943,-0.028961182,0.03994751,0.05279541,0.00724411,-0.027160645,-0.019546509,-0.05987549,-0.030929565,-0.04736328,0.005695343,0.014709473,0.009399414,0.062072754,-0.022262573,-0.027542114,0.0017700195,0.013381958,0.031036377,0.053649902,0.011253357,-0.013252258,0.03414917,0.009162903,-0.05105591,0.037628174,0.050201416,-0.0030784607,-0.03643799,-0.032958984,0.039398193,0.03274536,-0.026428223,0.01008606,-0.01914978,0.016082764,-0.01084137,0.0072669983,0.024505615,-0.021347046,-0.020965576,-0.02961731,-0.012901306,0.028839111,-0.0005569458,-0.022338867,-0.03982544,-0.09320068,0.044525146,0.029174805,0.038482666,-0.020111084,0.023117065,-0.043762207,-0.015838623,-0.051727295,0.045959473,0.06628418,-0.01651001,-0.017303467,0.018798828,-0.013908386,-0.032440186,0.005924225,-0.014640808,-0.028167725,-0.026016235,0.018234253,-0.060760498,0.0064811707,0.013076782,0.032318115,0.043060303,-0.010131836,-0.04296875,-0.021316528,-0.0059547424,0.008544922,-0.014915466,-0.010635376,-0.01878357,0.017044067,0.031982422,-0.021713257,0.019180298,-0.0019569397,0.010116577,-0.01940918,0.005970001,-0.021438599,-0.01979065,0.021148682,0.0005917549,-0.06262207,0.014549255,-0.0029773712,0.07623291,-0.056427002,0.028900146,-0.01285553,-0.0027751923,0.05557251,-0.0013284683,-0.05230713,0.011108398,0.03744507,0.02659607,0.041992188,0.007820129,-0.021850586,-0.014411926,0.0736084,-0.017730713,-0.017700195,0.004219055,0.016052246,0.030700684,-0.007408142,-0.06048584,-0.022109985,-0.015541077,-0.03894043,0.025619507,-0.022964478,0.01689148,-0.0053710938,-0.0006556511,-0.02128601,-0.002336502,-0.031280518,0.0134887695,-0.0049743652,0.013885498,-0.0045051575,-0.0019035339,0.022460938,0.015594482,-0.01007843,0.011787415,0.04397583,0.0037841797,-0.008476257,-0.03137207,-0.011238098,-0.006477356,-0.0015153885,0.035888672,0.015419006,0.018417358,0.043670654,-0.030151367,0.0126953125,0.02444458,0.030136108,0.017959595,-0.010284424,0.005191803,-0.07080078,-0.03866577,-0.028182983,-0.055389404,0.039978027,0.02015686,0.013458252,0.05593872,0.008094788,-0.03164673,-0.046081543,0.027145386,-0.04486084,-0.0022621155,0.039398193,-0.0017948151,-0.019073486,0.0042381287,-0.009033203,0.016036987,0.037506104,0.018005371,0.021408081,0.07910156,0.052886963,-0.0015487671,0.0043525696,0.02255249,0.025527954,0.00056648254,-0.01828003,-0.046203613,-0.010940552,0.008773804,-0.020217896,-0.020248413,-0.07476807,0.054595947,0.055267334,0.061187744,0.022857666,0.016830444,0.037902832,-0.023025513,0.007019043,-0.03427124,-0.0029850006,-0.013214111,-0.04748535,0.025772095,-0.013633728,0.011817932,-0.023864746,0.018081665,-0.00945282,0.020568848,-0.037475586,0.04159546,-0.0049972534,0.004322052,0.023712158,0.006755829,0.04525757,0.072143555,-0.049743652,0.044647217,0.026504517,-0.03552246,0.0013008118,0.04309082,-0.023651123,-0.022720337,-0.04864502,-0.035736084,-0.0020198822,-0.015853882,-0.050811768,-0.011306763,0.012084961,0.013053894,0.029754639,-0.02684021,-0.015777588,0.011413574,-0.0022563934,-0.052703857,-0.0019083023,-0.04159546,0.010665894,0.034088135,-0.016616821,-0.002872467,0.004055023,0.010848999,-0.016494751,0.013252258,0.018554688,0.00039553642,-0.04421997,0.018432617,0.0003373623,0.026153564,0.009651184,0.034698486,0.019515991,0.041809082,0.039733887,0.0063476562,-0.0063323975,-0.059814453,0.0073623657,-0.051208496,-0.00541687,0.030563354,-0.0385437,0.0005426407,-0.02104187,-0.031082153,-0.014038086,-0.002439499,-0.044647217,0.0049972534,0.0105896,-0.028274536,-0.029830933,-0.04586792,-0.03604126,-0.0065460205,0.05368042,0.015159607,0.00440979,-0.062805176,-0.013969421,0.03274536,-0.0015878677,0.023666382,-0.016403198,-0.020095825,-0.015945435,-0.02709961,0.009719849,-0.007633209,0.032562256,0.0021896362,-0.028518677,0.02168274,0.012496948,0.029724121,0.017852783,0.0076065063,0.04345703,-0.013397217,0.0063209534,-0.004508972,0.048339844,0.01928711,-0.025756836,-0.04928589,0.03857422,0.007095337,0.028900146,-0.03274536,0.00957489,-0.008049011,0.016998291,0.005748749,-0.019134521,-0.012130737,-0.011016846,-0.04925537,-0.07305908,0.045135498,-0.015487671,0.02444458,0.013313293,0.010032654,0.01651001,0.005367279,-0.0056495667,0.033477783,-0.020568848,-0.016433716,-0.030181885,-0.02293396,-0.02104187,-0.01259613,-0.015556335,0.016799927,-0.02810669,0.025863647,0.010887146,-0.02229309,0.024230957,0.009681702,0.00005710125,0.025970459,0.00005286932,0.011016846,0.043914795,0.012023926,-0.035064697,0.013183594,0.0049552917,0.008010864,0.003189087,0.05102539,0.024780273,-0.01285553,0.0016317368,-0.0008621216,-0.022323608,-0.01763916,0.008224487,0.0040512085,0.012573242,-0.008956909,-0.045654297,0.027297974,0.01902771,-0.029754639,-0.014862061,0.026184082,0.018035889,-0.028182983,0.0067749023,0.029449463,0.054260254,-0.033691406,0.004673004,-0.0008010864,0.036895752,0.024414062,0.01725769,-0.016326904,0.023345947,-0.0076560974,0.010574341,0.009857178,-0.015472412,0.020126343,-0.013442993,0.02557373,0.005027771,-0.005607605,-0.0070343018,-0.024810791,0.008171082,0.00078344345,-0.014228821,0.012535095,0.03488159,0.025604248,-0.02923584,0.017654419,0.001461029,-0.020004272,-0.022705078,0.011444092,0.032684326,-0.013221741,-0.01576233,0.017120361,0.0109939575,0.03366089,-0.04937744,-0.019042969,0.00031089783,0.021835327,-0.030792236,-0.03152466,-0.044555664,-0.0038318634,0.038879395,0.013504028,0.02571106,0.027114868,-0.004360199,0.005504608,0.016326904,0.0009303093,-0.007484436,-0.020690918,-0.03930664,0.0062675476,-0.00006937981,-0.00907135,-0.04776001,0.003440857,-0.01763916,-0.023834229,0.002922058,-0.004436493,-0.011161804,-0.025436401,0.0059394836,0.030700684,0.00007498264,0.0061454773,-0.016586304,-0.036834717,0.0036506653,0.017196655,0.021957397,-0.046722412,0.013839722,-0.01725769,-0.008300781,0.000910759,0.025054932,0.018066406,0.036102295,-0.0075798035,0.035064697,-0.037353516,0.033416748,-0.017028809,-0.005138397,0.0101623535,-0.04309082,-0.02255249,-0.022857666,-0.015945435,0.046813965,-0.012374878,-0.008056641,-0.034240723,-0.034973145,-0.010986328,-0.052581787,0.014503479,0.04598999,0.033172607,-0.01586914,0.00340271,-0.004650116,-0.010643005,-0.015007019,0.0056266785,-0.007045746,0.022369385,0.012611389,0.00010317564,-0.03302002,-0.019744873,-0.01727295,0.009376526,-0.04727173,-0.050354004,-0.022155762,0.0023899078,-0.010772705,0.0096206665,-0.02029419,-0.014289856,-0.012649536,-0.037384033,0.02508545,0.007457733,0.01725769,0.0079956055,-0.024093628,-0.0030879974,0.012863159,-0.005256653,0.040863037,0.012893677,-0.014259338,-0.028579712,0.0042381287,0.02696228,0.028717041,0.0030574799,-0.015960693,0.00642395,-0.017486572,-0.055755615,-0.011230469,-0.0027427673,-0.005256653,-0.0075035095,-0.0033912659,-0.033721924,-0.0041618347,-0.027145386,-0.0062026978,0.014808655,0.019805908,0.009124756,0.011054993,0.011634827,-0.0074386597,-0.004634857,-0.038360596,0.02279663,0.011756897,0.0034561157,0.021820068,0.055480957,-0.0082473755,-0.016967773,0.002336502,-0.0038719177,0.016738892,-0.019073486,0.020858765,-0.0026454926,0.006702423,-0.0027999878,-0.016540527,-0.026947021,-0.0110321045,0.08117676,-0.0014295578,-0.017089844,-0.02130127,-0.0035305023,0.01474762,0.03643799,-0.028900146,-0.0022563934,-0.026870728,0.013412476,-0.0067214966,0.026885986,0.0037460327,0.019592285,-0.015213013,-0.057647705,-0.014968872,0.0011072159,-0.02645874,-0.06994629,-0.019622803,-0.05444336,-0.0010309219,-0.0046463013,-0.029449463,0.0004451275,0.025741577,-0.015007019,-0.091430664,-0.0018968582,0.040283203,-0.0032787323,0.028869629,-0.0070877075,0.005432129,0.022903442,-0.046691895,-0.009559631,0.038513184,-0.0345459,-0.010482788,-0.0107040405,0.009315491,-0.015266418,-0.023010254,0.00818634,0.006969452,0.007080078,-0.01802063,0.0087890625,-0.018661499,0.0058288574,-0.013702393,0.02293396,-0.017349243,-0.011634827,0.049438477,-0.04928589,0.023895264,0.021102905,-0.0015220642,0.0005507469,0.012863159,0.039794922,-0.035858154,-0.0038337708,0.030838013,0.003921509,0.033691406,-0.027511597,0.037200928,0.015960693,-0.016113281,0.012077332,-0.022445679,-0.015975952,-0.03878784,-0.017120361,0.017181396,-0.017028809,0.018096924,-0.022720337,-0.0009212494,0.018234253,0.0010099411,-0.005680084,-0.012275696,-0.030212402,-0.024719238,0.007980347,-0.0082473755,0.008026123,-0.010513306,0.017822266,0.0002667904,0.05130005,0.013160706,-0.011360168,0.0049095154,0.030700684,-0.004508972,0.0072669983,0.017471313,0.006729126,0.029556274,0.013801575,0.006362915,-0.04486084,-0.027832031,-0.027023315,-0.013145447,0.003358841,-0.00856781,-0.011451721,0.001742363,0.00070381165,-0.004886627,-0.039855957,0.009254456,-0.034118652,-0.019134521,0.012023926,-0.02810669,0.02418518,0.0055503845,0.0052261353,0.020690918,-0.0038890839,0.038757324,0.0036640167,-0.0046424866,0.03555298,0.040771484,0.023452759,-0.027023315,0.0011749268,-0.015052795,-0.00007420778,0.0034217834,-0.020050049,0.011856079,0.04248047,-0.018417358,-0.010101318,0.00642395,0.012825012,-0.010185242,0.017578125,0.0050621033,0.020706177,-0.008361816,0.044677734,-0.0423584,0.028060913,0.019638062,-0.007457733,-0.016403198,0.00356102,-0.030731201,0.016357422,-0.0019817352,-0.010505676,0.050872803,-0.0057296753,0.017959595,-0.02104187,-0.004508972,0.0041236877,-0.03265381,-0.008049011,0.03152466,-0.0030212402,-0.009140015,0.0055122375,-0.029342651,0.03768921,-0.02935791,0.033599854,-0.008842468,0.0031013489,-0.006313324,-0.037628174,-0.020950317,0.0046424866,-0.0035438538,-0.0027980804,-0.0033397675,0.03829956,0.021835327,0.035095215,0.05142212,0.006706238,0.0045394897,-0.032226562,-0.03781128,0.007007599,-0.017974854,0.029937744,-0.016662598,0.042510986,0.05090332,0.0072517395,0.027923584,0.022277832,0.021835327,0.020324707,0.011749268,-0.007259369,0.004486084,-0.003211975,0.015670776,-0.0025253296,0.04724121,-0.023162842,0.019836426,0.018966675,0.026748657,-0.025939941,0.0385437,0.07006836,0.016860962,-0.013717651,0.0390625,-0.003955841,-0.016052246,-0.007648468,-0.02293396,0.06085205,-0.00434494,0.05038452,0.04937744,0.019134521,0.0049934387,0.031082153,-0.03048706,-0.02255249,0.05807495,0.017364502,-0.02116394,-0.014694214,-0.013114929,0.0024490356,-0.04324341,-0.02330017,0.013687134,-0.013145447,0.011207581,-0.0042686462,0.0013551712,-0.003967285,0.010650635,0.034118652,0.010810852,-0.005153656,0.025238037,0.02053833,-0.0093307495,0.021331787,-0.011711121,0.0340271,-0.037353516,-0.019073486,0.008880615,0.014175415,-0.009887695,-0.02168274,0.015609741,0.00724411,0.059387207,0.046447754,-0.031677246,0.016983032,0.03604126,0.021942139,0.008972168,0.049102783,0.027404785,0.02027893,0.024230957,0.041015625,0.02645874,-0.032592773,0.019760132,-0.0043792725,0.0070343018,-0.007888794,-0.01171875,0.004928589,-0.017532349,0.01600647,0.0068969727,-0.009849548,0.031402588,0.022720337,-0.0058135986,-0.004005432,0.004211426,0.009475708,-0.01939392,0.0018320084,0.01222229,-0.016433716,0.024627686,0.0121154785,0.035247803,-0.016723633,0.026947021,0.00019061565,-0.013900757,-0.0019445419,0.024993896,-0.03793335,0.005783081,-0.009155273,-0.0074920654,-0.053009033,0.025375366,0.019454956,-0.014450073,0.027770996,-0.0007176399,-0.0093307495,-0.0035572052,0.029418945,0.0035743713,-0.003604889,-0.009414673,-0.013931274,0.040405273,0.048736572,0.010437012,0.01713562,-0.011184692,-0.010673523,-0.014602661,-0.006122589,-0.0061073303,-0.011222839,-0.0051460266,-0.019851685,0.008888245,0.036956787,0.014694214,0.045043945,-0.0050086975,0.0018424988,0.0009665489,0.028549194,0.016021729,-0.0062713623,-0.008262634,0.014015198,-0.021499634,0.045196533,0.029800415,0.018554688,0.024505615,-0.01663208,-0.011375427,-0.0107803345,-0.0025463104,0.020202637,-0.010955811,0.021011353,-0.003643036,0.012283325,-0.02458191,-0.048217773,0.0034370422,-0.0049095154,-0.01600647,-0.017547607,0.012924194,0.013252258,0.02760315,0.03414917,0.018432617,-0.025390625,0.068847656,-0.006706238,0.060638428,-0.0063552856,-0.0105896,0.04083252,0.026565552,0.03955078,0.013313293,0.035705566,-0.027832031,0.026107788,0.038116455,0.026138306,0.013320923,0.012680054,-0.018112183,0.040161133,-0.0016317368,0.032165527,-0.016586304,0.008544922,0.024368286,-0.0046539307,-0.013061523,0.010139465,0.0009484291,0.015945435,0.029632568,-0.031082153,-0.009140015,-0.015716553,-0.013244629,0.027191162,-0.009376526,-0.00356102,0.0031394958,-0.018447876,0.019515991,-0.03933716,-0.020935059,0.00447464,0.021026611,-0.03744507,-0.009292603,0.010368347,0.016738892,-0.020584106,0.020401001,0.01638794,0.003868103,-0.0014352798,0.051361084,-0.011451721,0.032928467,-0.010536194,0.020889282,0.049987793,-0.00037622452,-0.021331787,0.005378723,0.00007134676,-0.022888184,0.005695343,0.042755127,-0.019546509,0.00087833405,0.0029850006,-0.019638062,0.0074501038,-0.0021572113,-0.0063552856,0.003660202,-0.009994507,-0.007144928,-0.019454956,0.0132369995,-0.0035648346,0.0071105957,-0.0032291412,-0.01398468,0.009056091,0.03692627,0.017074585,-0.04071045,0.00005465746,0.008087158,0.013916016,-0.031082153,-0.013122559,-0.004043579,-0.0362854,0.0077590942,0.00033473969,0.00415802,0.018875122,-0.020584106,0.0026874542,0.02633667,0.01259613,0.022369385,0.007949829,-0.0010385513,0.018157959,-0.02331543,-0.0015659332,-0.022537231,-0.016662598,0.017166138,0.03024292,0.004257202,-0.019989014,0.032928467,-0.001666069,0.018707275,0.0056533813,-0.020095825,0.028411865,-0.014930725,-0.0069503784,-0.0052490234,0.023513794,-0.0067214966,-0.013267517,-0.013076782,0.041809082,0.05493164,-0.009918213,-0.0065727234,0.036590576,0.008735657,0.0074691772,0.03994751,0.008277893,0.03866577,0.03186035,-0.03414917,-0.03062439,0.026641846,0.00057935715,-0.015144348,0.022232056,-0.01713562,-0.019866943,0.006790161,0.0184021,-0.0072402954,-0.026107788,-0.022781372,-0.021774292,-0.021438599,0.015571594,-0.018737793,0.007423401,-0.013313293,-0.010879517,0.00472641,-0.022735596,-0.045013428,-0.014190674,-0.0023918152,-0.01285553,-0.05822754,0.02670288,-0.030563354,0.012573242,-0.030761719,-0.0007829666,-0.008766174,0.02949524,-0.013282776,0.004673004,0.014419556,0.0129470825,0.018371582,0.011772156,0.020248413,-0.021499634,-0.027359009,-0.017807007,0.006324768,-0.008857727,0.02229309,-0.0019407272,0.02999878,0.01727295,-0.0039596558,-0.00066041946,-0.00014030933,-0.01789856,-0.004928589,-0.032928467,-0.009162903,0.021453857,0.014640808,-0.0036258698,-0.009269714,0.037384033,-0.02507019,-0.018005371,0.030838013,0.045715332,0.0057754517,0.027404785,-0.014450073,-0.0049934387,-0.009147644,-0.005329132,-0.020599365,-0.00042653084,0.0071487427,0.00004631281,-0.012039185,0.005432129,0.024414062,-0.01436615,-0.01927185,0.017822266,0.0032405853,-0.0079422,0.028305054,0.014587402,0.008857727,-0.011741638,-0.010574341,0.014419556,0.04421997,0.022857666,-0.001953125,0.0013008118,0.007068634,-0.008178711,0.013374329,0.017425537,-0.019073486,-0.03024292,-0.012039185,-0.026367188,0.02180481,0.00083875656,0.017547607,-0.0038547516,0.01737976,-0.0012292862,-0.029769897,-0.016418457,0.016738892,0.01675415,0.0022029877,-0.015464783,0.001581192,0.011978149,-0.030456543,-0.010551453,-0.02268982,-0.028869629,0.0027885437,-0.023086548,0.019744873,0.014228821,-0.00945282,-0.00737381,-0.0042648315,0.006580353,0.007511139,0.023483276,-0.023269653,-0.0041046143,0.028961182,0.015899658,-0.021026611,0.019577026,-0.014137268,-0.005340576,0.022399902,0.00028800964,0.009429932,-0.02986145,0.035308838,-0.009063721,-0.02142334,0.01953125,0.0042648315,0.030075073,-0.04147339,0.012016296,0.0046463013,0.010421753,0.03378296,-0.019943237,-0.027404785,0.0019006729,-0.018035889,-0.029693604,0.0033245087,0.026763916,0.048431396,-0.014030457,0.03555298,-0.018981934,-0.020126343,-0.00085258484,0.010169983,-0.019470215,-0.007701874,0.03479004,0.009346008,-0.006149292,-0.0067100525,-0.009094238,-0.029632568,-0.0068855286,0.019515991,-0.0016517639,-0.00014960766,0.030181885,0.018218994,0.043548584,0.0034599304,0.021942139,0.018692017,0.0030517578,0.0028648376,0.0064315796,0.04208374,0.015655518,-0.015159607,0.016693115,-0.0021839142,-0.029769897,-0.014678955,-0.014328003,-0.0031490326,-0.03756714,0.025405884,-0.0032310486,0.026885986,-0.030944824,0.0155181885,-0.02017212,-0.01838684,-0.030700684,-0.013114929,-0.025726318,0.005256653,0.033996582,-0.0059165955,0.024871826,0.015541077,-0.016143799,0.02482605,0.049346924,-0.013221741,-0.019683838,-0.01448822,0.0113220215,0.00046563148,0.012336731,0.013542175,-0.019165039,-0.02319336,0.0072402954,-0.01360321,0.020019531,-0.00365448,0.014724731,0.010696411,-0.011352539,-0.0075187683,0.033111572,-0.017593384,-0.0040283203,0.011924744,0.007007599,0.03540039,0.038970947,-0.0041503906,0.022079468,0.026123047,-0.05117798,0.051361084,-0.008308411,0.02619934,-0.024459839,-0.0059661865,-0.048034668,-0.023803711,-0.004962921,-0.00075149536],"createdAt":"2026-04-21T18:32:24.404Z","updatedAt":"2026-04-22T01:02:20.138Z","lastSeenAt":"2026-04-22T01:02:20.138Z","tsv":"'/api/v1/lab/results/65':57,164 '/request':13,28 '0.02':12,27,68,82,157 '000':74 '20':73 '402':214 '6':80 '65':194 'Base network API' 'USDC micropayment API' 'accept':217 'access':7,22,41,63 'advertis':111 'ai':125 'analysi':129 'analyt':119 'api':6,21,40,62,84 'application/json':222 'attach':95 'avail':205 'base':9,24,52,75 'base-network' 'broader':108 'call':4,19,70 'caller':93 'catalog':114 'categori':174 'challeng':216 'classif':132 'clear':167 'commit':90 'confirm':209 'convers':149 'cost':65 'crypto-paid API' 'data':118,122 'decim':81 'document':173,198 'embed':133 'endpoint':32,116,152,163,207 'estim':143 'exchang':138 'experiment':187 'export':123 'feed':137 'financ':134 'gas':142 'generat':150 'geocod':147 'header':100 'howev':160 'id':193 'infrastructur':145 'insight':124 'json-response' 'key':85 'lab':185 'land':177 'learn':127 'limit':87 'list':59 'live':210 'lowpaymentfee' 'lowpaymentfee.com':34,109 'machin':126 'map':168 'maxamountrequir':71 'may':183 'metric':120 'network':53 'no-api-key' 'page':178 'path':180 'pay':2,17,37 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':36 'payment':47,99,105 'per':3,18,38,69,158 'platform':110 'post':218 'post-method' 'premium':5,20,61 'premium data endpoint' 'price':136,155 'proof':106 'proper':213 'protocol':45 'provid':35 'quot':141 'rate':86,139 'report':121 'request':39,159,199,219 'requir':92 'resourc':56,191 'respons':202 'result':188 'return':184,211,221 'schema':200,203 'sentiment':128 'settl':46 'simpli':94 'span':117 'specif':55,162 'suggest':181 'summar':131 'text':130 'token':140 'uniform':154 'unit':76 'upfront':89 'usdc':15,30,49,78 'usdc-settlement' 'use':42 'util':146 'valid':103,148 'via':10,25 'web3':135 'wide':113 'x':98 'x-payment':97 'x402':11,26,44,104,215 'x402 API' 'x402-payment'","prices":[{"id":"d17e509a-d802-4abf-9897-b89527959f20","listingId":"6a977de3-4663-479f-9661-fe924a6bccc1","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/lab/results/65","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:24.404Z"}],"sources":[{"listingId":"6a977de3-4663-479f-9661-fe924a6bccc1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/lab/results/65","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:24.404Z","lastSeenAt":"2026-04-22T01:02:20.138Z"}],"details":{"listingId":"6a977de3-4663-479f-9661-fe924a6bccc1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/lab/results/65 \\\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":"Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/lab/results/65"},{"claim":"USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/lab/results/65"},{"claim":"All endpoints priced at $0.02/request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium data or lab results without subscription or API key management","Agent-driven workflows that need on-demand paid API calls settled in USDC on Base","Programmatic retrieval of results from a pay-per-request endpoint with no rate limits"],"bestFor":["Developers or agents who want zero-commitment, per-call API pricing","Use cases requiring crypto-native (USDC on Base) payment settlement","Quick integration without registration or API key provisioning"],"notFor":["Users who need detailed documentation or well-defined request/response schemas before integrating","High-volume consumers who would benefit from bulk pricing or subscription plans"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:04.243Z"},"updatedAt":"2026-04-22T01:02:20.138Z"}}