{"id":"affe6784-d2c7-4a74-ad3d-dfcc23f508c9","shortId":"AEtP6Z","kind":"x402","title":"Pay-per-call lab results endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call lab results endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This x402-enabled endpoint at lowpaymentfee.com provides premium API access to a \"lab results\" resource (specifically `/api/v1/lab/results/2`). It is part of a broader platform offering dozens of pay-per-call APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nPayment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The x402 challenge advertises a `maxAmountRequired` of 20,000 base units, which at 6 decimals equals $0.02 USD per call. The endpoint accepts HTTP POST requests and returns `application/json` responses. No OpenAPI schema or detailed documentation for the response body was found, so the exact structure of the returned lab results data is unknown.\n\nThe platform positions itself as a low-friction, wallet-based API marketplace. All endpoints share the same $0.02 pricing and x402 payment flow. The specific `/lab/results/2` endpoint's purpose is not documented beyond the generic \"Premium API Access\" label, making it difficult to determine what data it actually returns without making a paid request.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-call","json-response","no-api-key","http-post"],"categories":["data","api-marketplace"],"synonyms":["lab results API","lowpaymentfee","x402 API","pay-per-request API","USDC micropayment API","Base network API","premium data endpoint"],"warnings":["No documentation exists for what /api/v1/lab/results/2 actually returns","No request body schema or response schema available","The 'lab results' label is generic and unexplained — actual data content is unknown","Other crawled pages (/api, /pricing, /README) returned no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/lab/results/2","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear at $0.02/request in USDC on Base. However, there is no OpenAPI schema, no documentation of request parameters or response format, and the purpose of the 'lab results' resource is entirely opaque. The crawled pages beyond the homepage returned only 'Connect wallet' with no useful 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":"2026-04-21T22:22:37.953Z","embedding":[-0.013114929,-0.036956787,0.048614502,0.016601562,0.012001038,-0.02708435,-0.032409668,0.014724731,0.05230713,-0.07946777,0.024627686,-0.04360962,-0.019180298,-0.03652954,-0.028869629,0.0005698204,0.016220093,0.020355225,-0.05114746,0.022354126,0.016677856,-0.04055786,-0.01537323,0.0014228821,-0.026657104,-0.046142578,-0.00022554398,-0.013214111,-0.026748657,-0.035583496,0.022125244,-0.022613525,-0.0103302,0.010314941,-0.046447754,0.016586304,0.0049972534,0.029159546,0.010620117,-0.029174805,-0.0047187805,-0.049438477,0.0051994324,0.00041890144,-0.04055786,-0.01739502,0.012893677,-0.044311523,0.02835083,-0.017318726,-0.039245605,-0.006538391,0.0034160614,-0.019546509,-0.0025615692,0.01461792,0.010223389,-0.00051403046,0.013137817,0.0047569275,0.010787964,-0.056121826,-0.00217247,-0.009429932,-0.00009071827,0.05810547,-0.017913818,0.032989502,0.024993896,0.055480957,0.038848877,0.056640625,0.0025596619,0.02027893,-0.025772095,-0.018859863,-0.0026931763,0.07080078,-0.02154541,-0.030090332,-0.015426636,-0.0234375,-0.0057258606,0.016418457,0.0028247833,-0.035888672,0.0004413128,0.015991211,-0.014968872,0.025146484,-0.0703125,-0.03765869,0.013221741,0.028442383,0.018005371,0.0018453598,-0.011428833,0.0107421875,-0.019363403,0.0102005005,0.0048332214,-0.028396606,0.011764526,0.007865906,0.018508911,0.039855957,-0.008529663,0.017822266,0.0068092346,-0.017700195,-0.00084781647,0.018035889,-0.014434814,0.00041890144,-0.0021457672,0.0059280396,-0.024047852,0.024093628,-0.027404785,0.01776123,-0.035461426,0.059661865,0.0070724487,-0.015548706,0.018951416,-0.029907227,0.00687027,-0.01285553,0.008010864,-0.016784668,0.041046143,0.003900528,0.019073486,-0.0010662079,-0.0440979,0.03277588,-0.0317688,-0.03186035,-0.05255127,-0.05355835,0.040252686,-0.0090789795,0.05419922,0.027359009,-0.06402588,-0.0022010803,-0.023147583,0.020355225,-0.018295288,0.004081726,0.004562378,0.036621094,-0.020477295,-0.0037574768,-0.026626587,-0.014183044,0.02859497,0.033325195,-0.029083252,0.03463745,-0.000045120716,0.028503418,0.022094727,0.0019817352,0.022979736,0.03677368,-0.0055160522,-0.062286377,-0.09063721,-0.010101318,-0.013847351,-0.01689148,-0.02079773,0.0012130737,-0.017105103,-0.05279541,-0.0029144287,-0.009429932,0.0032253265,-0.04776001,-0.007843018,-0.0513916,0.0038833618,-0.002532959,-0.061828613,-0.029281616,-0.02923584,0.058258057,0.020553589,0.009384155,0.03744507,-0.017562866,0.048797607,0.039031982,-0.034484863,-0.009101868,0.040802002,-0.015258789,0.006023407,0.0046691895,-0.010696411,-0.024017334,0.03366089,0.049713135,0.010726929,-0.035308838,-0.017211914,-0.060791016,-0.01751709,-0.035491943,0.019180298,0.027389526,0.0034446716,0.05734253,-0.01876831,-0.017486572,-0.021438599,0.019454956,0.019760132,0.046295166,0.024002075,-0.010124207,0.041168213,-0.003873825,-0.067993164,0.03842163,0.034454346,0.0016307831,-0.0079193115,-0.044006348,0.018463135,0.017791748,-0.015396118,0.0067329407,-0.008453369,0.03152466,-0.0030403137,0.01878357,0.0209198,-0.018692017,-0.03289795,-0.041015625,-0.011383057,0.036071777,0.0011854172,-0.032196045,-0.03390503,-0.10333252,0.06262207,0.0418396,0.011352539,-0.01713562,0.026550293,-0.04937744,-0.015411377,-0.054473877,0.044158936,0.03286743,-0.016143799,-0.037902832,0.016357422,-0.011978149,-0.031463623,-0.010864258,-0.031799316,-0.02583313,-0.019439697,0.030334473,-0.0635376,-0.0062561035,0.031021118,0.016738892,0.039489746,-0.02330017,-0.028427124,-0.014762878,-0.013946533,0.032348633,-0.023422241,-0.00182724,-0.02330017,0.04876709,0.012779236,-0.024093628,0.020339966,-0.024246216,-0.0076675415,-0.03555298,0.015701294,-0.0035209656,-0.015670776,0.017074585,0.008361816,-0.06365967,0.0006132126,-0.0093307495,0.07672119,-0.05340576,0.045043945,-0.0070152283,-0.020721436,0.04788208,0.008453369,-0.054626465,0.0035552979,0.025375366,0.032318115,0.039764404,-0.00970459,-0.020050049,-0.022628784,0.07171631,-0.00036120415,-0.0181427,0.003955841,0.018035889,0.027694702,-0.0072746277,-0.076416016,-0.03982544,0.0016956329,-0.0340271,0.040008545,-0.01991272,0.0004413128,0.002981186,0.008422852,-0.03274536,-0.0042152405,-0.01651001,0.002790451,-0.0065994263,0.01309967,-0.017868042,0.023376465,0.011924744,0.011276245,0.008674622,0.0107421875,0.048583984,0.005332947,-0.008377075,-0.035705566,-0.01184845,0.006549835,-0.011367798,0.036224365,0.023208618,0.0038108826,0.034057617,-0.031311035,0.0057144165,0.030319214,0.020141602,0.013336182,-0.00048398972,-0.0064849854,-0.08325195,-0.025177002,-0.03564453,-0.064575195,0.02923584,0.045562744,0.018707275,0.044281006,-0.00041913986,-0.03793335,-0.03793335,0.02935791,-0.03353882,0.014320374,0.033111572,-0.0058631897,-0.015090942,-0.0018320084,-0.00299263,0.021453857,0.046417236,0.02885437,0.03765869,0.08673096,0.051849365,0.0035972595,0.011878967,0.02973938,0.039154053,-0.014465332,0.0057640076,-0.035827637,-0.015602112,-0.0051727295,-0.024017334,-0.008262634,-0.0713501,0.04611206,0.050750732,0.057861328,0.034729004,0.010986328,0.03173828,-0.0019836426,-0.0008678436,-0.037475586,-0.01751709,-0.004714966,-0.0713501,0.025131226,-0.00548172,0.035003662,-0.024032593,0.021057129,0.0024528503,0.019378662,-0.03656006,0.037597656,-0.006538391,0.023529053,0.038146973,0.0119018555,0.049682617,0.06756592,-0.029052734,0.05215454,0.019699097,-0.014915466,-0.008285522,0.036895752,-0.018371582,-0.019515991,-0.04776001,-0.05166626,0.009635925,-0.017791748,-0.055419922,-0.026977539,0.011741638,0.0031795502,0.022491455,-0.044158936,-0.029891968,0.012870789,0.008728027,-0.03378296,-0.0006146431,-0.047302246,0.032196045,0.009490967,-0.015205383,-0.009773254,-0.015335083,0.010864258,-0.015655518,0.001247406,0.030944824,-0.0127334595,-0.049865723,0.018417358,-0.02218628,0.023910522,-0.0055885315,0.04446411,-0.009521484,0.047332764,0.043060303,-0.005115509,-0.007949829,-0.058898926,0.01889038,-0.056243896,-0.0065612793,0.026397705,-0.04849243,-0.0011119843,-0.011726379,-0.03656006,0.0033435822,0.0010290146,-0.051940918,-0.005378723,0.015434265,-0.008529663,-0.025238037,-0.04144287,-0.039398193,-0.021224976,0.04849243,0.014137268,-0.0057373047,-0.08001709,-0.024551392,0.043945312,0.0011482239,0.021499634,-0.013442993,-0.026016235,-0.000003695488,-0.035369873,0.026824951,-0.009262085,0.0446167,0.0046806335,-0.010917664,0.016860962,0.024871826,0.03970337,0.010429382,0.00020682812,0.053344727,-0.027252197,0.016693115,-0.0017967224,0.055023193,0.02748108,-0.027404785,-0.05609131,0.023727417,0.0065689087,0.018096924,-0.027160645,0.0066184998,-0.0107803345,0.013328552,-0.0026245117,-0.01991272,-0.007980347,-0.014320374,-0.05407715,-0.078186035,0.039978027,-0.009651184,0.022338867,0.017486572,0.0026664734,0.021530151,0.0051231384,-0.02558899,0.049591064,-0.009613037,-0.028213501,-0.045074463,-0.022109985,-0.024780273,-0.020751953,-0.022628784,0.017181396,-0.0121536255,0.020584106,0.012245178,-0.002418518,0.011260986,0.017288208,-0.009605408,0.02407837,0.008636475,0.015167236,0.029251099,0.021270752,-0.03491211,0.014541626,0.013954163,-0.007980347,0.009094238,0.04800415,0.01876831,-0.0068473816,-0.0068969727,-0.010238647,-0.028900146,-0.042663574,0.017166138,0.0062332153,0.0074920654,-0.003501892,-0.022155762,0.012969971,0.019073486,-0.032043457,-0.010940552,0.024780273,0.010047913,-0.018615723,-0.0069274902,0.03173828,0.039215088,-0.013000488,0.012832642,0.0026187897,0.028137207,0.036224365,0.01776123,-0.00756073,0.015853882,0.005809784,0.02168274,0.0013561249,-0.022567749,0.029556274,-0.00047636032,0.034851074,0.0055007935,-0.015090942,0.008041382,-0.01586914,-0.0023708344,0.0132751465,-0.012908936,0.0138549805,0.025299072,0.023284912,-0.028015137,0.021270752,0.0019044876,-0.025726318,-0.015930176,0.027908325,0.04638672,-0.028137207,-0.018814087,0.021240234,0.0047035217,0.019134521,-0.044281006,-0.024383545,-0.010299683,0.019622803,-0.032470703,-0.03942871,-0.027160645,-0.010475159,0.025131226,0.008285522,0.024459839,0.0309906,-0.01499176,0.005748749,0.022521973,-0.00022876263,-0.0057296753,-0.01374054,-0.041290283,0.016784668,0.012870789,-0.0132369995,-0.0440979,-0.011947632,-0.024154663,-0.020065308,-0.0053749084,-0.02609253,-0.0031490326,-0.013114929,0.011962891,0.022888184,-0.007534027,0.004722595,-0.018676758,-0.046295166,-0.005870819,0.023040771,0.0121154785,-0.040893555,0.0124435425,-0.014854431,-0.0005021095,0.0021629333,0.027542114,0.016403198,0.027435303,0.011688232,0.030441284,-0.026550293,0.022338867,-0.03390503,-0.008071899,0.009811401,-0.019180298,-0.028579712,-0.021759033,-0.02142334,0.045837402,0.007144928,-0.005443573,-0.027511597,-0.032562256,-0.0005764961,-0.04324341,0.013793945,0.06286621,0.038085938,-0.01247406,0.0128479,0.004043579,-0.0047836304,-0.016677856,0.0005617142,-0.020721436,0.03591919,0.009300232,0.0026664734,-0.022857666,-0.004207611,-0.027664185,0.009773254,-0.05065918,-0.052703857,-0.011154175,-0.014816284,-0.007736206,0.015960693,-0.032287598,-0.005706787,-0.006801605,-0.032928467,0.020690918,-0.0006070137,0.0070724487,0.0020542145,-0.033721924,-0.0058135986,0.012359619,-0.009170532,0.04663086,-0.0053253174,-0.024093628,-0.03213501,0.009757996,0.020874023,0.027740479,0.00019860268,-0.02330017,0.020645142,-0.021911621,-0.06781006,-0.0050621033,-0.0015106201,-0.006034851,-0.0052986145,-0.006214142,-0.04208374,0.006214142,-0.030319214,0.00023782253,0.010192871,0.011741638,-0.0028324127,0.017211914,0.011878967,0.0014657974,-0.014274597,-0.047454834,0.012016296,0.009628296,-0.010375977,0.019866943,0.061950684,-0.010375977,-0.029510498,-0.020874023,0.004802704,0.018600464,-0.023422241,0.010238647,0.014289856,-0.0020008087,-0.005760193,-0.019165039,-0.010917664,-0.012077332,0.06982422,0.009849548,-0.0008234978,-0.012374878,-0.0017261505,0.03201294,0.02545166,-0.025436401,-0.014030457,-0.03842163,0.010047913,-0.014350891,0.025039673,-0.0016546249,0.03982544,-0.010185242,-0.047180176,-0.017868042,0.0015182495,-0.012046814,-0.068237305,-0.026977539,-0.055725098,0.005104065,-0.038269043,-0.0034389496,0.00869751,0.027633667,-0.037963867,-0.07043457,-0.0053596497,0.015525818,-0.017150879,0.017440796,-0.014930725,0.003900528,0.011245728,-0.054626465,0.008995056,0.022415161,-0.03881836,-0.0050621033,-0.010505676,0.008605957,-0.0068092346,-0.0070152283,0.0032100677,-0.0025253296,-0.0054893494,-0.044311523,0.016098022,-0.017211914,0.013412476,-0.014183044,0.022140503,-0.010604858,-0.010292053,0.052459717,-0.042663574,0.02571106,0.03439331,0.005153656,0.000626564,0.005256653,0.014297485,-0.024795532,-0.0041046143,0.024765015,0.015426636,0.044921875,-0.013122559,0.019363403,0.016433716,-0.009613037,0.0017147064,-0.02748108,-0.0017385483,-0.04446411,-0.026245117,0.020843506,-0.0033855438,0.008644104,-0.019180298,-0.008270264,-0.009132385,0.019241333,-0.011062622,-0.0109939575,-0.010520935,-0.032470703,0.011070251,-0.013908386,0.001698494,-0.015731812,0.022277832,-0.00073099136,0.041137695,-0.0013275146,-0.012298584,-0.0038394928,0.037384033,0.005519867,-0.00699234,0.0140686035,0.017501831,0.04031372,0.013427734,0.002620697,-0.05380249,-0.03125,-0.011985779,-0.0126571655,0.02015686,-0.005645752,-0.0028800964,0.02406311,0.013404846,-0.00497818,-0.033081055,0.011978149,-0.03930664,-0.022247314,0.009880066,-0.026290894,0.030410767,0.027770996,-0.0063934326,0.019485474,-0.0045547485,0.04248047,0.0010404587,0.01637268,0.04937744,0.03616333,0.02267456,-0.028274536,0.014251709,-0.0105896,-0.014030457,-0.009918213,-0.013587952,-0.007118225,0.030136108,-0.021011353,-0.010040283,0.01373291,-0.0030517578,-0.001871109,0.018844604,0.014427185,0.02659607,-0.0027275085,0.03366089,-0.040130615,0.040985107,0.017868042,-0.01826477,-0.024398804,0.020248413,-0.020706177,0.011421204,0.011665344,-0.009254456,0.029891968,-0.004798889,0.031219482,-0.028121948,0.003211975,0.011199951,-0.025238037,-0.01247406,0.027633667,-0.007675171,-0.019683838,0.005722046,-0.02482605,0.032043457,-0.05114746,0.030639648,-0.014755249,0.0042266846,-0.0037765503,-0.009994507,-0.03967285,0.0017080307,-0.016311646,-0.0038490295,-0.00028944016,0.03366089,0.011978149,0.036010742,0.046569824,0.010681152,0.0022602081,-0.023803711,-0.03463745,0.018234253,-0.0066375732,0.031433105,0.0009431839,0.019424438,0.04248047,-0.0012311935,0.018341064,0.03503418,0.032684326,0.01927185,0.01058197,0.0014371872,0.0011034012,-0.0060043335,0.019882202,0.0015192032,0.048065186,-0.044891357,0.027664185,0.024383545,0.018295288,-0.01461792,0.0390625,0.06323242,-0.0014820099,-0.025268555,0.044555664,-0.010932922,-0.026000977,-0.006095886,-0.016784668,0.04336548,-0.00039601326,0.044830322,0.040283203,0.024108887,0.007408142,0.0037517548,-0.014411926,-0.0135650635,0.039978027,0.013618469,-0.0115356445,-0.025146484,-0.006038666,-0.0085372925,-0.028778076,-0.022918701,0.006877899,-0.01486969,-0.0099105835,-0.0040397644,0.008110046,-0.007980347,0.017410278,0.026733398,0.017349243,-0.0126571655,0.035583496,0.010375977,-0.0119018555,0.027694702,-0.0031852722,0.040405273,-0.013946533,-0.030136108,0.0042648315,0.025558472,-0.0069465637,-0.036254883,0.0024986267,0.002943039,0.048339844,0.03262329,-0.030670166,0.011039734,0.02482605,0.02406311,0.020355225,0.051086426,0.013145447,0.014640808,0.025939941,0.025726318,0.020935059,-0.02178955,0.007167816,-0.007865906,0.01084137,-0.010177612,0.00806427,0.00040507317,-0.016403198,0.03302002,-0.00072717667,0.006511688,0.027908325,0.022659302,-0.0071487427,-0.026672363,0.0012454987,0.0007414818,-0.012191772,-0.0013027191,0.016693115,-0.010879517,0.017120361,0.013160706,0.03527832,-0.023727417,0.034851074,0.0057373047,-0.015670776,-0.0027599335,0.027893066,-0.035888672,0.009483337,-0.013916016,-0.004924774,-0.037475586,0.03036499,0.02658081,-0.023345947,0.023849487,0.0012741089,-0.0012731552,-0.005367279,0.04336548,0.020523071,0.007129669,0.013389587,-0.0027923584,0.04220581,0.05441284,0.01033783,0.0015058517,-0.018310547,-0.010543823,-0.014656067,-0.013702393,-0.01889038,0.00078725815,-0.006629944,-0.023284912,0.008384705,0.024246216,-0.00030755997,0.04058838,-0.009109497,0.008300781,0.0037612915,0.02835083,0.012504578,-0.008522034,-0.005115509,-0.009025574,-0.021377563,0.03930664,0.03262329,0.012176514,0.034057617,-0.0062294006,-0.008361816,-0.008575439,-0.00033974648,0.020141602,-0.013427734,0.025650024,0.003250122,-0.0033512115,-0.016235352,-0.03555298,0.006626129,-0.01864624,-0.024108887,-0.026290894,0.02079773,0.008308411,0.029754639,0.03048706,0.027862549,-0.008407593,0.06439209,0.0014877319,0.056121826,-0.0049591064,-0.0012979507,0.03778076,0.028793335,0.03338623,0.025283813,0.033081055,-0.020309448,0.034118652,0.02494812,0.020980835,0.004722595,0.006023407,-0.009483337,0.048706055,-0.009208679,0.034698486,-0.011985779,0.008529663,0.0039100647,0.0049095154,-0.019180298,0.0032215118,0.0004246235,0.020950317,0.029327393,-0.03112793,-0.01058197,-0.006038666,-0.003993988,0.036743164,-0.00932312,-0.015319824,0.0060310364,-0.0067749023,0.002336502,-0.035064697,-0.020507812,0.0049362183,0.014175415,-0.06048584,-0.010093689,0.0090408325,0.015274048,-0.022384644,0.008132935,0.025177002,0.0019760132,-0.009849548,0.04208374,-0.015655518,0.034942627,-0.015007019,0.03427124,0.03475952,0.012214661,-0.015235901,-0.00819397,-0.010063171,-0.030639648,0.014312744,0.034088135,-0.02230835,0.0021038055,0.009101868,-0.008506775,0.00007861853,-0.010917664,-0.011962891,0.004055023,-0.01600647,-0.011367798,-0.022994995,0.017562866,-0.013587952,0.007881165,-0.015487671,-0.00831604,0.0099105835,0.026153564,-0.000056743622,-0.023513794,-0.0054855347,0.003074646,0.02104187,-0.035858154,-0.020523071,0.0053253174,-0.03527832,0.02192688,0.003736496,0.00020265579,0.027404785,-0.011779785,-0.008644104,0.025802612,-0.00009351969,0.018127441,0.005092621,-0.0030345917,0.016204834,-0.019210815,0.008232117,-0.021484375,-0.0016613007,0.017196655,0.029525757,0.015258789,-0.0135650635,0.033935547,-0.015571594,0.0061149597,0.007282257,-0.009979248,0.033477783,-0.027236938,-0.000808239,-0.003709793,0.024124146,-0.014907837,-0.007484436,-0.007637024,0.032928467,0.046661377,-0.010177612,-0.008636475,0.032592773,0.011924744,0.00047326088,0.045562744,0.00032162666,0.038482666,0.022888184,-0.036468506,-0.025558472,0.012008667,-0.0016622543,-0.008674622,0.023590088,-0.025863647,-0.012802124,0.0068130493,0.018844604,-0.008491516,-0.022857666,-0.020996094,-0.018005371,-0.021896362,0.005088806,-0.009246826,0.006713867,-0.011917114,-0.016189575,-0.0017728806,-0.029205322,-0.053863525,-0.015258789,0.005634308,-0.012001038,-0.049468994,0.018066406,-0.02104187,0.0053710938,-0.032348633,-0.003232956,-0.013870239,0.032348633,-0.016799927,0.007858276,0.027633667,0.012771606,0.016448975,0.0090789795,0.03527832,-0.026931763,-0.024291992,-0.004234314,0.00844574,-0.004486084,0.03186035,0.0038375854,0.022369385,0.016616821,-0.014839172,0.0024147034,0.0014791489,-0.027359009,0.0020751953,-0.025268555,-0.0049057007,0.024734497,0.006580353,0.012199402,-0.012763977,0.03378296,-0.024368286,-0.0073394775,0.043182373,0.033691406,0.006298065,0.02267456,-0.002002716,-0.0076293945,-0.014915466,0.005344391,-0.008399963,0.002729416,0.002445221,-0.008293152,-0.0118255615,0.010139465,0.020523071,-0.016708374,-0.022140503,0.02116394,0.010665894,0.00687027,0.026931763,0.016815186,-0.0058937073,-0.009864807,-0.019973755,0.008865356,0.041290283,0.023544312,-0.023651123,0.0017337799,-0.011878967,0.0047569275,0.0084991455,0.020492554,-0.023590088,-0.03778076,-0.014854431,-0.02670288,0.018737793,0.0003604889,-0.0060806274,-0.014389038,0.020187378,0.010429382,-0.044830322,-0.0038146973,0.022583008,0.03488159,0.008140564,-0.031341553,-0.017990112,0.013038635,-0.020431519,-0.01889038,-0.044555664,-0.04421997,0.008224487,-0.017303467,0.014915466,-0.0068206787,-0.009986877,-0.007030487,-0.008308411,0.0058631897,0.00598526,0.02986145,-0.014030457,0.0012559891,0.02003479,0.02041626,-0.019256592,0.021057129,-0.018722534,-0.0007109642,0.015563965,0.010421753,0.017669678,-0.03665161,0.030014038,-0.009017944,-0.009963989,0.030395508,0.013656616,0.025253296,-0.04498291,0.011154175,0.0071105957,-0.0005784035,0.035736084,-0.014656067,-0.0385437,-0.0025119781,-0.01689148,-0.017562866,0.01309967,0.013145447,0.05114746,-0.01637268,0.016036987,-0.010169983,-0.021896362,0.0022239685,-0.0020542145,-0.016326904,0.010757446,0.015426636,0.0062828064,0.0031032562,-0.015777588,-0.0071792603,-0.0181427,-0.0059928894,0.013313293,-0.007583618,0.008338928,0.03036499,0.028427124,0.03829956,0.015312195,0.021316528,0.015899658,-0.013793945,-0.00062704086,0.0008587837,0.05633545,0.0068855286,-0.018417358,0.028366089,-0.0014371872,-0.0362854,-0.008613586,-0.013587952,-0.003622055,-0.010658264,0.018966675,0.006828308,0.024398804,-0.011894226,0.011703491,-0.019363403,0.007888794,-0.025512695,-0.008346558,-0.033966064,-0.0025691986,0.016204834,0.004196167,0.021118164,0.010795593,-0.020111084,0.026473999,0.043304443,-0.01965332,-0.020431519,-0.020828247,0.016082764,0.0022850037,0.021377563,0.004535675,-0.010795593,-0.022720337,0.019104004,-0.008468628,0.014724731,-0.010948181,0.020584106,0.025115967,-0.008552551,-0.007865906,0.028900146,-0.013023376,-0.022399902,-0.0031356812,0.0018253326,0.04562378,0.03555298,-0.004211426,0.035491943,0.020004272,-0.039123535,0.050689697,-0.0017051697,0.025497437,-0.022659302,0.0043754578,-0.0368042,-0.022079468,-0.015396118,0.009223938],"createdAt":"2026-04-21T18:32:24.298Z","updatedAt":"2026-04-22T01:02:19.853Z","lastSeenAt":"2026-04-22T01:02:19.853Z","tsv":"'/api/v1/lab/results/2':52 '/lab/results/2':188 '/request':17,34 '0.02':16,33,82,123,180 '000':115 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':106 '20':114 '6':120 'Base network API' 'USDC micropayment API' 'accept':129 'access':45,200 'actual':210 'advertis':110 'ai/ml':71 'analyt':70 'api':44,67,87,173,199 'application/json':135 'base':9,26,101,116,172 'base-network' 'beyond':195 'bodi':146 'broader':58 'call':4,21,66,126 'challeng':109 'commit':94 'contract':105 'data':69,75,158,208 'decim':121 'detail':141 'determin':206 'difficult':204 'document':142,194 'dozen':61 'enabl':38 'endpoint':7,24,39,128,176,189 'equal':122 'exact':151 'financ':73 'flow':185 'found':148 'friction':169 'generic':197 'http':130 'http-post' 'infer':72 'infrastructur':77 'json-response' 'key':88 'lab':5,22,48,156 'lab results API' 'label':201 'limit':91 'low':168 'low-frict':167 'lowpaymentfee' 'lowpaymentfee.com':41 'make':202,213 'marketplac':174 'maxamountrequir':112 'network':102 'no-api-key' 'offer':60 'openapi':138 'paid':215 'part':55 'pay':2,19,64 'pay-per-cal':1,18,63 'pay-per-call' 'pay-per-request API' 'payment':96,184 'per':3,20,65,83,125 'platform':59,162 'posit':163 'post':131 'premium':43,198 'premium data endpoint' 'price':80,181 'provid':42 'purpos':191 'rate':90 'request':84,132,216 'requir':95 'resourc':50 'respons':136,145 'result':6,23,49,157 'return':134,155,211 'schema':139 'settl':12,29,98 'share':177 'span':68 'specif':51,187 'structur':152 'unit':117 'unknown':160 'usd':124 'usdc':14,31,104 'usdc-settlement' 'use':103 'util':78 'via':10,27 'wallet':171 'wallet-bas':170 'web3':74 'without':212 'x402':11,28,37,108,183 'x402 API' 'x402-enabled':36 'x402-payment'","prices":[{"id":"a7ce461b-4c6d-4d01-8b6f-681d75cadbda","listingId":"affe6784-d2c7-4a74-ad3d-dfcc23f508c9","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:24.298Z"}],"sources":[{"listingId":"affe6784-d2c7-4a74-ad3d-dfcc23f508c9","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/lab/results/2","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:24.298Z","lastSeenAt":"2026-04-22T01:02:19.853Z"}],"details":{"listingId":"affe6784-d2c7-4a74-ad3d-dfcc23f508c9","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/lab/results/2 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/lab/results/2"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/lab/results/2"}],"useCases":["Accessing lab results data via a single paid POST request","Demonstrating x402 payment protocol integration","Building agents that consume pay-per-call data endpoints without API key management"],"bestFor":["Developers exploring x402 payment protocol","Agents needing keyless, pay-per-call API access on Base","Projects requiring low-cost micropayment-gated data retrieval"],"notFor":["Users needing detailed documentation or response schemas before purchasing","High-volume batch processing where per-call pricing adds up","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:04.381Z"},"updatedAt":"2026-04-22T01:02:19.853Z"}}