{"id":"b1ec4019-1fcb-4d4c-bfc2-07553106be28","shortId":"AnQ9kc","kind":"x402","title":"x402-gated lab results endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated lab results endpoint on Base, pay-per-request with USDC.","description":"This endpoint at `/api/v1/lab/results/45` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-call APIs spanning data analytics, AI/ML inference, finance, and utility services. The specific resource appears to serve \"lab results\" data (resource ID 45), though the exact payload schema is not documented. Payment is settled on the Base network using USDC (contract `0x8335…2913`) via the x402 exact-payment scheme.\n\nThe x402 challenge is live and requests a maximum of 20,000 base units of USDC. Since USDC uses 6 decimals, this converts to $0.02 per request — consistent with the platform's uniform $0.02/request pricing advertised on the landing page. No API keys or rate limits are required; callers simply attach an `X-PAYMENT` header with a valid x402 payment proof. The endpoint accepts POST requests and returns `application/json`.\n\nThe broader lowpaymentfee.com platform lists endpoints for metrics, reports, data export, insights, 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 price point. However, this specific `/lab/results/45` endpoint is not listed on the landing page, and no documentation describes its request or response schema. Without further docs, the exact data returned and any required POST body fields remain unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","no-api-key","lab-results"],"categories":["data"],"synonyms":["lab results API","x402 paid endpoint","USDC micropayment API","lowpaymentfee","Base network API","pay-per-call data"],"warnings":["This specific endpoint (/api/v1/lab/results/45) is not listed among the provider's advertised APIs — it may be a test or internal resource.","No request body schema or response schema is documented; callers cannot know what to send or what to expect.","The /api, /pricing, and /README pages all returned only a 'Connect wallet' prompt with no useful content.","The term 'lab results' is ambiguous and could refer to medical, scientific, or test data — no clarification is available."],"endpointUrl":"https://lowpaymentfee.com/api/v1/lab/results/45","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/45","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 pricing is clear ($0.02/request in USDC on Base). However, this specific endpoint (/api/v1/lab/results/45) is not listed on the provider's landing page, has no documentation, no request/response schema, and no examples. The purpose of 'lab results' is entirely opaque.","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":"2026-04-21T22:33:57.226Z","embedding":[-0.025894165,-0.020019531,0.042938232,0.006542206,0.011993408,-0.017028809,-0.020812988,0.0047569275,0.047576904,-0.07788086,0.035858154,-0.05239868,-0.025436401,-0.037261963,-0.02331543,0.010978699,-0.004398346,0.020141602,-0.055725098,0.025268555,0.040985107,-0.037750244,-0.017532349,0.0050811768,-0.029159546,-0.03463745,0.005882263,-0.0079193115,-0.01638794,-0.019683838,0.01574707,-0.026489258,-0.019241333,-0.011383057,-0.02558899,0.02067566,0.0011901855,0.031036377,0.008270264,-0.025665283,-0.020812988,-0.059326172,-0.0030784607,0.003967285,-0.04360962,-0.016159058,0.0032577515,-0.049865723,0.009101868,-0.026489258,-0.026107788,0.00422287,-0.011245728,-0.002073288,0.0066604614,0.012413025,0.0074424744,-0.0016469955,0.031311035,0.0028247833,0.0050315857,-0.056427002,-0.0022525787,0.003332138,0.011817932,0.05380249,-0.019943237,0.04046631,0.0019741058,0.07165527,0.040405273,0.056365967,0.015670776,0.017501831,-0.00844574,-0.015640259,-0.0069122314,0.043518066,-0.02658081,-0.034118652,-0.018035889,-0.03491211,-0.006954193,-0.010223389,0.0014810562,-0.056793213,-0.018310547,0.016708374,-0.0041389465,0.03540039,-0.091308594,-0.03353882,0.002614975,0.036376953,0.005367279,-0.005580902,-0.0072898865,0.006839752,0.0028514862,0.010505676,0.014541626,-0.04144287,0.027435303,0.0010614395,0.025634766,0.0357666,-0.023956299,0.024719238,0.00064086914,-0.026062012,0.008026123,0.008659363,-0.031341553,0.000031769276,0.0032539368,0.0009098053,-0.027023315,0.015670776,-0.03656006,0.01727295,-0.048309326,0.068237305,-0.0015296936,-0.021850586,0.0062713623,-0.034454346,0.010856628,-0.02418518,-0.0070381165,-0.006526947,0.05014038,-0.012992859,-0.010520935,-0.008285522,-0.043548584,0.035858154,-0.025100708,-0.020050049,-0.06347656,-0.025634766,0.04171753,-0.011413574,0.05331421,0.03274536,-0.07434082,-0.0005617142,-0.022567749,0.02658081,-0.022003174,0.0043144226,0.026351929,0.036010742,-0.029769897,0.003698349,-0.018508911,-0.035949707,-0.0019798279,0.020126343,-0.020065308,0.029907227,0.0017147064,0.02796936,0.027526855,0.0028629303,0.014160156,0.050323486,-0.003873825,-0.06427002,-0.082458496,-0.021530151,-0.033081055,-0.014862061,-0.019851685,-0.0006055832,-0.031951904,-0.04638672,-0.015464783,-0.017333984,0.0107040405,-0.04269409,-0.008369446,-0.039794922,-0.0082092285,-0.003850937,-0.056854248,-0.022766113,-0.029953003,0.059539795,0.011642456,0.02420044,0.026275635,-0.010238647,0.062347412,0.047454834,-0.026855469,-0.025634766,0.040161133,-0.024475098,0.029586792,0.0026607513,0.010612488,0.0035915375,0.050231934,0.045562744,-0.00085926056,-0.032196045,-0.017440796,-0.057861328,-0.025558472,-0.045684814,0.0113220215,0.02381897,-0.0062408447,0.046813965,-0.033233643,-0.008659363,-0.021652222,0.015792847,0.024353027,0.041900635,0.021606445,0.003824234,0.048736572,0.013549805,-0.06500244,0.03869629,0.03479004,0.004886627,-0.022399902,-0.046722412,0.037902832,0.029724121,-0.021209717,-0.0066986084,-0.013061523,0.0107803345,-0.019241333,-0.003850937,0.008834839,-0.029327393,-0.03250122,-0.031143188,-0.0005893707,0.029815674,0.002418518,-0.025680542,-0.045410156,-0.095458984,0.057434082,0.05117798,0.006679535,-0.0051651,0.020721436,-0.05645752,-0.020126343,-0.03540039,0.034484863,0.034118652,-0.013641357,-0.033813477,0.031204224,-0.0149002075,-0.03161621,-0.010658264,-0.015319824,-0.010505676,-0.011779785,0.018005371,-0.068603516,-0.0013284683,0.033721924,0.033355713,0.04449463,-0.020401001,-0.0357666,-0.0105896,-0.010406494,0.030212402,-0.03765869,-0.026275635,-0.011383057,0.035858154,0.016326904,0.0002887249,-0.0013628006,-0.00642395,-0.012466431,-0.026443481,0.024108887,-0.0036392212,-0.007133484,0.028366089,0.029327393,-0.052703857,0.011375427,-0.008987427,0.07446289,-0.05380249,0.03933716,-0.015586853,-0.009109497,0.040802002,-0.00092220306,-0.06427002,-0.0032348633,0.03363037,0.043273926,0.04043579,0.0069999695,-0.0052223206,-0.025024414,0.052093506,-0.008361816,-0.012748718,-0.00081825256,0.017745972,0.036895752,-0.0030670166,-0.06555176,-0.04171753,-0.0021533966,-0.036712646,0.038330078,-0.020584106,0.002998352,0.0048675537,0.008453369,-0.028869629,-0.01737976,-0.03805542,0.0035858154,0.003604889,0.020370483,0.0033569336,0.009559631,0.00022804737,0.002166748,0.016052246,0.011665344,0.044006348,0.0014457703,-0.0138549805,-0.0155181885,-0.024673462,0.00047826767,-0.009002686,0.03375244,0.011070251,0.011222839,0.021102905,-0.022857666,0.00046277046,0.007888794,0.00869751,0.01940918,-0.0096206665,-0.008834839,-0.079956055,-0.037078857,-0.02861023,-0.06738281,0.037322998,0.02897644,0.027282715,0.037750244,-0.0039405823,-0.021316528,-0.043701172,0.035858154,-0.03213501,0.0050468445,0.018707275,-0.013374329,-0.03225708,0.009162903,-0.0009908676,0.021728516,0.04650879,0.024475098,0.045654297,0.08703613,0.050811768,0.008872986,0.00019180775,0.03475952,0.04522705,-0.019073486,0.0017051697,-0.040649414,-0.022613525,0.0012397766,-0.042999268,-0.027893066,-0.071777344,0.045959473,0.04458618,0.06976318,0.012542725,0.0071372986,0.0345459,-0.015136719,0.00086164474,-0.03994751,-0.024505615,-0.012542725,-0.042816162,0.010658264,0.00054216385,0.03164673,-0.034179688,0.010292053,0.011276245,0.0042648315,-0.041290283,0.057678223,-0.018005371,0.016067505,0.03326416,0.021011353,0.046295166,0.066833496,-0.04046631,0.032958984,0.018035889,-0.026855469,0.0029468536,0.027572632,-0.009407043,-0.009544373,-0.0496521,-0.04510498,-0.015777588,-0.014953613,-0.056854248,-0.018234253,-0.0027160645,0.019699097,0.012435913,-0.031555176,-0.025863647,0.026428223,0.027236938,-0.022918701,0.0063476562,-0.058807373,0.028533936,0.020050049,-0.006668091,0.007911682,-0.0152282715,0.015571594,-0.019897461,0.020950317,0.0149002075,-0.013183594,-0.050720215,0.023635864,-0.025405884,0.036712646,0.003288269,0.049224854,0.026916504,0.05053711,0.026138306,-0.0057373047,-0.0036945343,-0.058258057,0.012245178,-0.050933838,0.011360168,0.02746582,-0.04257202,-0.006450653,-0.006565094,-0.025360107,-0.0041618347,0.003194809,-0.054840088,0.0050582886,0.026123047,-0.023727417,-0.04272461,-0.04260254,-0.040283203,-0.010009766,0.054473877,0.013404846,0.0028038025,-0.039520264,-0.030960083,0.052947998,-0.014808655,0.011199951,-0.0152282715,-0.023010254,-0.005153656,-0.039398193,0.008705139,-0.011711121,0.05078125,-0.0007119179,-0.014816284,-0.00017881393,0.0146484375,0.03781128,0.028823853,-0.010169983,0.03845215,-0.029159546,0.028427124,-0.0024261475,0.053588867,0.028869629,-0.028396606,-0.051483154,0.037261963,-0.019058228,0.014167786,-0.03677368,0.01348114,-0.0021266937,0.02104187,-0.0015611649,-0.031173706,-0.010406494,-0.010238647,-0.03451538,-0.06518555,0.029953003,0.007835388,0.0141067505,0.024429321,0.017547607,0.032318115,0.003124237,-0.026016235,0.02507019,-0.008918762,-0.02973938,-0.04675293,-0.013412476,-0.029022217,-0.0073890686,-0.017089844,0.019592285,-0.0053215027,0.033599854,-0.000100553036,-0.013694763,0.011253357,0.01626587,-0.00026917458,0.029922485,0.001326561,0.008018494,0.036865234,0.016860962,-0.037384033,0.01171875,0.005443573,-0.0027198792,0.020904541,0.04031372,0.017181396,-0.020065308,0.005168915,-0.0059280396,-0.020843506,-0.031036377,-0.00018751621,0.008033752,0.020019531,0.011711121,-0.01689148,0.018936157,0.015014648,-0.035095215,-0.008384705,0.022216797,0.023223877,-0.027679443,-0.012794495,0.03555298,0.028396606,-0.026626587,0.00932312,0.0020923615,0.034301758,0.013961792,0.0032749176,0.004760742,0.023651123,-0.000004172325,0.01260376,0.0138549805,-0.019195557,0.028625488,-0.003900528,0.035888672,-0.0009899139,-0.007118225,-0.010368347,-0.019851685,0.0021038055,0.023223877,-0.018341064,0.022033691,0.01184082,0.024139404,-0.031280518,0.01675415,0.007171631,-0.02810669,-0.025268555,0.015975952,0.035186768,-0.011245728,-0.0033435822,0.018859863,0.006290436,0.023483276,-0.045288086,-0.016204834,-0.009376526,0.029220581,-0.023345947,-0.05316162,-0.028366089,-0.032989502,0.03768921,-0.0033016205,0.01272583,0.029006958,-0.012062073,0.0070533752,0.011054993,-0.003993988,0.0035266876,-0.018341064,-0.04837036,0.013412476,0.0034179688,-0.002357483,-0.040130615,0.010597229,-0.025924683,-0.0209198,-0.005054474,-0.023529053,-0.009773254,-0.014808655,0.0041122437,0.025863647,-0.004611969,0.0022220612,-0.009407043,-0.04269409,-0.006958008,0.026794434,0.008590698,-0.03387451,0.010658264,-0.010223389,-0.008506775,-0.0076522827,0.031951904,0.008674622,0.030700684,0.0115356445,0.039978027,-0.027282715,0.034362793,-0.019042969,-0.009559631,-0.004257202,-0.009986877,-0.040283203,-0.03024292,-0.01486969,0.043029785,0.0019016266,0.0007081032,-0.023925781,-0.031799316,0.0012636185,-0.05166626,0.019210815,0.044189453,0.041168213,-0.0062332153,0.0069465637,0.0118637085,-0.011779785,-0.011688232,0.0014238358,-0.007209778,0.02607727,0.01436615,-0.0050354004,-0.035736084,-0.012191772,-0.0042152405,0.0082473755,-0.057891846,-0.04864502,-0.012481689,-0.009223938,-0.01473999,0.01953125,-0.0141067505,-0.008796692,-0.007911682,-0.040039062,0.0102005005,-0.004463196,-0.0046844482,0.006149292,-0.038513184,-0.0069351196,0.008338928,-0.019744873,0.040039062,-0.008270264,-0.019332886,-0.0287323,-0.0034542084,0.00983429,0.01828003,-0.0073547363,-0.034851074,0.025009155,-0.018295288,-0.06201172,-0.004371643,-0.013877869,-0.00010854006,0.00045490265,-0.01121521,-0.05050659,-0.003004074,-0.04257202,0.0008716583,0.013587952,0.020111084,0.006149292,0.014724731,0.012207031,-0.010894775,-0.010620117,-0.050354004,0.0007266998,0.010932922,0.0043678284,0.026794434,0.047668457,-0.01966858,-0.023620605,-0.0032844543,0.008613586,0.009719849,-0.020492554,0.016784668,0.007019043,0.008148193,0.013092041,-0.0154953,-0.02243042,-0.007701874,0.059814453,0.00002270937,0.008811951,0.0030879974,0.0059165955,0.02243042,0.028289795,-0.036315918,-0.006072998,-0.030166626,0.009719849,-0.0063285828,0.033111572,-0.009902954,0.022537231,-0.016082764,-0.046966553,-0.00957489,0.005264282,-0.01525116,-0.068115234,-0.033966064,-0.061279297,0.011009216,-0.019760132,-0.015823364,0.0036029816,0.027633667,-0.028152466,-0.07879639,-0.00806427,0.027999878,-0.021911621,0.009735107,-0.004261017,0.008674622,0.021209717,-0.04736328,-0.0042037964,0.022537231,-0.041412354,-0.0118637085,-0.008880615,0.02861023,-0.024475098,-0.01335144,-0.0053100586,0.0058174133,0.0033512115,-0.039398193,0.0135269165,-0.019760132,0.014923096,-0.004470825,0.014503479,-0.020736694,0.0011577606,0.064819336,-0.045288086,0.035095215,0.017028809,0.012214661,0.004055023,0.00982666,0.018096924,-0.03668213,0.0010480881,0.03237915,0.0045547485,0.045684814,-0.026260376,0.022079468,0.011062622,-0.008460999,-0.008728027,-0.038879395,0.003189087,-0.04562378,-0.029373169,0.012123108,0.001958847,-0.0069732666,-0.012809753,-0.010612488,-0.0033683777,0.022506714,-0.020935059,-0.015411377,-0.0041923523,-0.03149414,0.025848389,-0.011505127,0.002313614,-0.01525116,0.01725769,0.0006995201,0.046722412,-0.0005888939,-0.010284424,-0.0042686462,0.038879395,0.00274086,0.00063991547,0.010597229,0.028945923,0.039123535,0.0046958923,0.017028809,-0.04321289,-0.03414917,-0.009384155,-0.0146102905,0.019500732,-0.0025730133,0.0127334595,0.025222778,0.014450073,-0.0079574585,-0.041046143,0.013160706,-0.036987305,-0.018630981,0.0154800415,-0.02619934,0.023132324,0.027435303,-0.013969421,0.015838623,-0.01322937,0.03918457,-0.005016327,-0.0063209534,0.04562378,0.042999268,0.018005371,-0.02130127,0.011894226,-0.007255554,-0.023880005,-0.005619049,0.003566742,0.002658844,0.026626587,-0.02619934,-0.0035896301,0.016983032,0.006576538,0.007835388,0.027709961,0.026885986,0.025939941,-0.0076522827,0.04776001,-0.049468994,0.048065186,0.017303467,-0.008201599,-0.026824951,0.013618469,-0.008834839,0.017669678,0.01537323,-0.012893677,0.026382446,-0.0087890625,0.028320312,-0.022705078,-0.0118637085,0.005264282,-0.020217896,-0.0053749084,0.00806427,-0.00969696,-0.011444092,0.0020427704,-0.014671326,0.016021729,-0.046295166,0.015159607,-0.004337311,0.0013046265,0.001991272,-0.03189087,-0.011306763,-0.0015964508,-0.010360718,-0.017150879,-0.0068359375,0.033935547,0.034179688,0.025924683,0.018051147,0.016433716,0.010299683,-0.02810669,-0.034698486,0.0060195923,-0.021621704,0.052947998,-0.006187439,0.026855469,0.05331421,0.010070801,0.031066895,0.03189087,0.031921387,0.0074043274,0.009223938,-0.003540039,0.0140686035,-0.022720337,0.008476257,-0.0054740906,0.04901123,-0.035827637,0.00932312,0.019180298,0.017791748,-0.015808105,0.03527832,0.06945801,0.008888245,-0.0033416748,0.036468506,-0.008903503,-0.02281189,-0.007858276,-0.017440796,0.043823242,-0.00945282,0.043884277,0.0231781,0.017974854,0.005897522,0.01878357,-0.0067825317,-0.013175964,0.023391724,0.016967773,-0.0068473816,-0.010238647,-0.011512756,0.003358841,-0.029373169,-0.023269653,0.008201599,-0.007881165,0.00025868416,-0.0078048706,0.0060310364,-0.007144928,0.015808105,0.011764526,0.007980347,-0.014663696,0.029220581,-0.0017347336,-0.010864258,0.024871826,-0.0008087158,0.037872314,-0.012435913,-0.020065308,0.003479004,0.02229309,-0.004295349,-0.030212402,0.00982666,0.009162903,0.052703857,0.03164673,-0.026885986,-0.005256653,0.019592285,0.033691406,0.027740479,0.044006348,0.010498047,0.020721436,0.020812988,0.028259277,0.02229309,-0.006954193,0.011947632,-0.015571594,0.014793396,0.0027751923,0.0040664673,0.01763916,-0.016433716,0.023208618,-0.0024318695,0.005508423,0.031555176,0.016967773,-0.016479492,-0.031829834,0.013191223,0.007205963,-0.007507324,0.008743286,0.014411926,-0.013870239,0.012466431,0.030014038,0.040771484,-0.020523071,0.044677734,0.011421204,-0.017852783,0.0018129349,0.012619019,-0.04055786,0.0044136047,-0.017578125,-0.010826111,-0.04034424,0.021102905,0.013427734,-0.020843506,0.013023376,0.008140564,-0.00086164474,-0.011634827,0.040374756,0.025161743,0.000007390976,0.013206482,-0.012237549,0.032226562,0.043701172,-0.0069732666,-0.017074585,-0.024963379,0.002313614,-0.014221191,-0.004501343,-0.018493652,0.016357422,-0.0019350052,-0.022216797,0.004535675,0.031097412,0.005722046,0.037353516,-0.00957489,0.0128479,-0.006866455,0.038726807,0.01763916,-0.020614624,-0.013999939,0.00008058548,-0.02861023,0.04449463,0.022491455,0.010108948,0.028213501,0.0044784546,-0.011444092,-0.017227173,-0.009468079,0.016921997,-0.029693604,0.023529053,0.00043988228,-0.004005432,-0.027648926,-0.03805542,0.003288269,-0.02053833,-0.031463623,-0.012863159,0.024490356,0.0096206665,0.020324707,0.019546509,0.034362793,0.00060606,0.064453125,0.006614685,0.058807373,-0.0012321472,0.001127243,0.04269409,0.03427124,0.03237915,0.009422302,0.023269653,-0.012519836,0.027252197,0.02067566,0.021102905,0.017654419,0.007270813,0.0025138855,0.042419434,-0.015045166,0.03552246,-0.0066108704,0.0030345917,0.020996094,-0.009811401,-0.02394104,-0.006954193,-0.006511688,0.025482178,0.037139893,-0.020370483,-0.008041382,-0.0067634583,-0.013549805,0.04031372,-0.0028743744,-0.0028743744,-0.0008649826,0.001455307,0.005432129,-0.037628174,-0.01725769,0.011619568,0.020965576,-0.052825928,-0.008552551,0.023239136,0.027053833,-0.02947998,0.010284424,0.025756836,0.0006599426,-0.0066490173,0.040039062,-0.007522583,0.041046143,-0.012191772,0.039733887,0.050933838,0.010169983,-0.008148193,0.012130737,-0.0024299622,-0.026351929,0.011428833,0.035308838,-0.0105896,0.0029315948,0.0070648193,-0.0043754578,0.0041999817,-0.012435913,-0.01461792,0.004142761,-0.011306763,-0.017669678,-0.008552551,0.017929077,-0.0146865845,0.0002951622,0.0018091202,-0.015716553,0.005077362,0.027389526,0.0046806335,-0.02734375,-0.0034103394,0.00006222725,0.016937256,-0.039489746,-0.020141602,0.0024299622,-0.04309082,0.013305664,0.01713562,0.007911682,0.01209259,-0.013679504,-0.010017395,0.032348633,-0.0058937073,0.02281189,0.0012464523,0.0003168583,0.012969971,-0.015686035,0.0075798035,-0.029769897,-0.011444092,0.01335907,0.034973145,0.011672974,-0.0209198,0.020553589,-0.008110046,0.0031700134,0.005378723,-0.005302429,0.042022705,-0.029953003,0.00818634,-0.013961792,0.019134521,-0.019546509,-0.015716553,-0.015533447,0.03274536,0.046325684,-0.013641357,-0.013946533,0.019134521,0.024230957,0.005153656,0.036895752,0.007713318,0.039855957,0.02078247,-0.02645874,-0.047851562,0.013870239,0.004550934,-0.0025024414,0.027420044,-0.03050232,-0.024780273,0.010154724,0.020965576,-0.0010471344,-0.03189087,-0.010360718,-0.029022217,-0.025177002,0.011795044,-0.0077209473,0.006576538,-0.009513855,-0.01751709,0.006061554,-0.025177002,-0.025985718,-0.008506775,-0.0077667236,-0.026290894,-0.06100464,0.018661499,-0.010673523,0.00063610077,-0.040649414,0.005718231,-0.012756348,0.028152466,-0.010391235,0.010818481,0.01953125,0.01966858,0.003276825,0.017745972,0.025039673,-0.023223877,-0.022628784,-0.002199173,0.0066337585,-0.013694763,0.023666382,-0.00730896,0.01737976,0.00970459,-0.013473511,0.005367279,0.006538391,-0.03213501,0.0042304993,-0.029083252,-0.013786316,0.016311646,0.021347046,0.013145447,-0.006111145,0.025863647,-0.0059928894,-0.0078048706,0.037139893,0.038726807,0.00014412403,0.028869629,0.0042152405,-0.006389618,-0.021713257,-0.008415222,-0.01436615,-0.0024108887,0.011291504,0.0057640076,-0.00086164474,0.034484863,0.013519287,-0.018615723,-0.019607544,0.018508911,0.023452759,0.0068855286,0.032287598,0.015701294,-0.0078048706,-0.020126343,-0.010192871,0.008621216,0.060638428,0.016021729,-0.0035362244,0.000069737434,-0.0067863464,-0.0039367676,0.0056037903,0.017745972,-0.021575928,-0.03048706,-0.0013837814,-0.021133423,0.022354126,-0.01473999,0.00207901,-0.0036754608,0.011398315,0.010261536,-0.034454346,0.0033626556,0.017059326,0.023391724,0.0027370453,-0.024276733,-0.008377075,0.003900528,-0.020965576,-0.025375366,-0.03945923,-0.03390503,-0.002046585,-0.021270752,0.01852417,-0.009933472,-0.0055732727,-0.0046539307,0.0023460388,0.00072956085,0.016571045,0.019119263,-0.015296936,-0.0038394928,0.02204895,0.029907227,-0.02217102,0.008644104,-0.025268555,-0.005958557,0.018371582,0.020843506,0.030639648,-0.038116455,0.033081055,0.0017929077,-0.015205383,0.021148682,0.004966736,0.031280518,-0.04522705,-0.004611969,0.006919861,0.006011963,0.031433105,-0.003042221,-0.046966553,0.0011091232,-0.02029419,-0.02709961,0.009666443,0.022399902,0.053100586,-0.020599365,0.02218628,-0.016540527,-0.019195557,-0.004131317,0.0043411255,-0.016799927,0.005393982,0.015151978,-0.0014076233,0.009925842,-0.011550903,0.0007891655,-0.016189575,-0.0059432983,0.0087890625,-0.011291504,0.011161804,0.01725769,0.034210205,0.040039062,0.018432617,0.03173828,0.021530151,-0.01234436,0.0067214966,0.0016565323,0.05380249,0.012245178,-0.012191772,0.011817932,0.011146545,-0.03994751,-0.00057935715,-0.007183075,-0.012229919,-0.020324707,0.017059326,0.0011444092,0.017059326,-0.00579834,0.02279663,-0.017562866,-0.012428284,-0.0284729,-0.009468079,-0.0284729,0.00019991398,0.023849487,0.009284973,0.0061454773,0.0074691772,-0.019958496,0.026901245,0.039245605,-0.011817932,-0.03567505,-0.012382507,0.0055007935,0.0044288635,0.010543823,0.0029678345,-0.034240723,-0.013000488,0.013710022,-0.013153076,0.021224976,-0.021759033,0.021774292,0.032104492,-0.005508423,-0.012794495,0.0259552,-0.016662598,-0.01525116,0.008071899,-0.0006175041,0.04486084,0.033966064,-0.004337311,0.022415161,0.019363403,-0.05758667,0.042419434,-0.010658264,0.025024414,-0.024902344,0.019104004,-0.044036865,-0.022064209,-0.00058555603,-0.0008378029],"createdAt":"2026-04-21T18:32:24.610Z","updatedAt":"2026-04-23T02:02:21.403Z","lastSeenAt":"2026-04-23T02:02:21.403Z","tsv":"'/api/v1/lab/results/45':32 '/lab/results/45':210 '/request':132 '0.02':122,131,204 '000':109 '0x8335':89 '20':108 '2913':90 '45':70 '6':117 'Base network API' 'USDC micropayment API' 'accept':163 'advertis':134 'ai/ml':53 'analysi':182 'analyt':52 'api':49,140 'appear':62 'application/json':168 'attach':149 'base':8,22,84,110 'base-network' 'bodi':239 'broader':170 'call':48 'caller':147 'challeng':100 'classif':185 'collect':40 'consist':125 'contract':88 'convers':197 'convert':120 'data':51,67,178,233 'decim':118 'describ':222 'doc':230 'document':78,221 'embed':186 'endpoint':6,20,30,162,174,211 'estim':194 'exact':73,95,232 'exact-pay':94 'exchang':189 'export':179 'feed':188 'field':240 'financ':55 'gas':193 'gate':3,17 'generat':199 'geocod':195 'header':154 'howev':207 'id':69 'infer':54 'insight':180 'json-response' 'key':141 'lab':4,18,65 'lab results API' 'lab-results' 'land':137,217 'limit':144 'list':173,214 'live':102 'lowpaymentfee' 'lowpaymentfee.com':37,171 'maximum':106 'metric':176 'network':85 'no-api-key' 'page':138,218 'part':34 'pay':10,24,46 'pay-per-cal':45 'pay-per-call data' 'pay-per-request':9,23 'payload':74 'payment':79,96,153,159 'per':11,25,47,123 'platform':38,128,172 'point':206 'post':164,238 'price':133,187,205 'proof':160 'protocol':44 'quot':192 'rate':143,190 'remain':241 'report':177 'request':12,26,104,124,165,224 'requir':146,237 'resourc':61,68 'respons':226 'result':5,19,66 'return':167,234 'schema':75,227 'scheme':97 'sentiment':181 'serv':64 'servic':58 'settl':81 'simpli':148 'sinc':114 'span':50 'specif':60,209 'summar':184 'text':183 'though':71 'token':191 'uniform':130 'unit':111 'unknown':242 'usdc':14,28,87,113,115 'usdc-settlement' 'use':86,116 'util':57 'valid':157,196 'via':91 'without':228 'x':152 'x-payment':151 'x402':2,16,43,93,99,158 'x402 paid endpoint' 'x402-gated':1,15 'x402-payment' 'x402-protocol':42","prices":[{"id":"654eea02-2880-4727-8cdb-db9e5764c133","listingId":"b1ec4019-1fcb-4d4c-bfc2-07553106be28","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/45","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:24.610Z"}],"sources":[{"listingId":"b1ec4019-1fcb-4d4c-bfc2-07553106be28","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/lab/results/45","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:24.610Z","lastSeenAt":"2026-04-23T02:02:21.403Z"}],"details":{"listingId":"b1ec4019-1fcb-4d4c-bfc2-07553106be28","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/lab/results/45 \\\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":"The x402 challenge returns HTTP 402 with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/lab/results/45"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/lab/results/45"},{"claim":"Platform advertises uniform $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The landing page lists 16 API endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories but does not include /api/v1/lab/results/45","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving lab result data (ID 45) via a single paid API call","Demonstrating x402 payment protocol integration on Base","Agent-driven data retrieval with per-request USDC micropayments"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need pay-per-call data access without API keys","Low-friction micropayment API consumption on Base"],"notFor":["Users needing documented request/response schemas before integration","Bulk data retrieval where per-request fees add up","Non-crypto users who cannot settle payments in USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:03.883Z"},"updatedAt":"2026-04-23T02:02:21.403Z"}}