{"id":"fe8e11c8-b64e-4f0a-afd2-302d7352b605","shortId":"f5yYB3","kind":"x402","title":"Portfolio performance data via x402 micropayment on Base network, $0.02/request in USDC.","tagline":"Portfolio performance data via x402 micropayment on Base network, $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com returns portfolio performance data for portfolio ID 92. It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories. The endpoint uses the x402 payment protocol, settling in USDC on the Base network at $0.02 per request (20,000 base units with 6 decimals). No API keys or rate limits are required; callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe specific endpoint path (`/api/v1/portfolios/92/performance`) suggests it returns performance metrics for a particular portfolio, though the platform's landing page does not document this endpoint explicitly — it appears alongside broader finance and data categories. The response MIME type is `application/json`. The endpoint accepts POST requests and is marked as discoverable in the x402 challenge's output schema.\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 spec, no request/response schema, and no example payloads available. The endpoint is confirmed live (returns a proper 402 x402 challenge), but without documentation it is difficult to know what request body to send or what shape the response takes.","tags":[],"capabilities":["portfolio-performance","x402-payment","usdc-settlement","base-network","pay-per-request","json-api","no-api-key"],"categories":["finance","data"],"synonyms":["portfolio analytics","investment performance","portfolio returns","portfolio tracking","financial performance API","x402 finance API"],"warnings":["No API documentation available — all doc pages render only 'Connect wallet'","No request body schema or response schema documented anywhere","This specific endpoint (/api/v1/portfolios/92/performance) is not listed on the provider's landing page among advertised APIs","Portfolio ID 92 is hardcoded in the path; unclear if other portfolio IDs are available or how to discover them"],"endpointUrl":"https://lowpaymentfee.com/api/v1/portfolios/92/performance","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/portfolios/92/performance","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 with a valid x402 402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and no examples. The specific portfolio endpoint is not listed on the landing page. The listing is largely inferred from the URL path and x402 challenge metadata.","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":"2026-04-19T09:05:10.643Z","embedding":[0.01424408,-0.0024585724,0.028900146,0.014305115,0.020645142,-0.0048446655,-0.03466797,-0.0009784698,0.07678223,-0.017608643,0.010864258,-0.04876709,-0.021728516,-0.05328369,0.005218506,0.0073432922,0.028915405,-0.0043678284,-0.037994385,0.06323242,0.04421997,-0.014511108,-0.028564453,0.010276794,0.002822876,0.00003248453,-0.014015198,0.006454468,-0.020446777,-0.041381836,0.019241333,-0.028869629,-0.0058174133,0.0059547424,-0.019302368,0.0057296753,0.012550354,0.025848389,0.019897461,0.0047454834,-0.0044937134,-0.049591064,0.02545166,-0.0076560974,-0.027526855,0.00079393387,0.029724121,-0.039215088,0.04309082,0.019210815,-0.032592773,0.008361816,-0.026229858,0.026184082,0.018218994,0.018432617,0.01737976,-0.009933472,-0.008705139,0.021377563,0.014450073,-0.043395996,0.016021729,-0.013168335,0.009590149,0.03387451,-0.024520874,0.06365967,-0.004798889,0.07757568,0.031982422,0.036102295,0.0140686035,0.017791748,-0.011810303,-0.015853882,-0.02406311,0.044647217,0.010772705,-0.045715332,-0.015182495,0.009597778,-0.05899048,-0.015411377,-0.033843994,-0.043914795,-0.006061554,-0.007762909,-0.033996582,0.05053711,-0.074279785,0.00033855438,-0.0069885254,0.008384705,-0.011375427,-0.024139404,0.0051498413,0.022766113,0.0038776398,0.04638672,-0.0012969971,-0.024230957,-0.0071907043,0.03286743,0.040039062,0.038391113,-0.00030732155,0.04888916,-0.0018014908,-0.038757324,-0.057434082,-0.0107040405,0.0077056885,0.01512146,-0.006088257,0.003479004,-0.023101807,-0.0042648315,-0.018234253,0.01725769,-0.0690918,0.039093018,0.026062012,0.004966736,0.0035476685,-0.041229248,-0.008102417,-0.0069389343,-0.025039673,-0.03414917,0.021560669,0.008392334,0.0074691772,-0.023895264,-0.013572693,0.014373779,-0.012664795,-0.031402588,-0.05886841,-0.021850586,0.02192688,-0.030288696,0.046783447,0.018859863,-0.08984375,0.014259338,0.0025863647,0.037384033,-0.0011138916,-0.01965332,0.0019607544,0.030288696,-0.02130127,0.0022697449,-0.0069847107,-0.031021118,-0.016677856,0.012817383,0.010238647,0.015571594,0.008377075,0.0340271,-0.016479492,0.00289917,0.02935791,0.028411865,-0.010627747,-0.062927246,-0.06652832,-0.027862549,0.0090789795,-0.008056641,0.0045280457,-0.0054626465,-0.00053691864,-0.08068848,-0.00030755997,-0.029327393,0.0022220612,-0.048339844,-0.020996094,-0.031143188,0.00072193146,-0.009185791,-0.05819702,0.03439331,-0.007850647,0.0519104,0.007484436,0.048461914,0.04928589,-0.0016717911,0.038604736,0.02305603,-0.048309326,-0.030258179,0.000040650368,-0.014678955,-0.023391724,-0.0009007454,0.0093307495,-0.0031757355,0.057800293,0.057739258,0.0028133392,-0.018127441,-0.0062217712,-0.07574463,-0.03540039,0.012390137,0.033843994,0.022521973,-0.0158844,0.013259888,-0.0061950684,-0.02861023,0.012901306,0.049621582,0.0069847107,0.055603027,0.01121521,0.033996582,0.044433594,0.0033073425,-0.016921997,0.058044434,0.023284912,0.0032405853,-0.0076789856,-0.058654785,0.022323608,0.0073127747,-0.038909912,0.004234314,0.0071029663,0.0007634163,-0.02456665,-0.030715942,-0.0018358231,-0.028747559,0.015411377,-0.017333984,-0.0060539246,0.03125,0.034484863,0.006427765,-0.049560547,-0.069885254,0.02168274,0.01687622,0.03741455,-0.003107071,-0.008651733,-0.021026611,0.00005543232,-0.046783447,0.016616821,0.057678223,-0.025848389,-0.010047913,0.012954712,-0.0039787292,-0.015052795,-0.0115356445,-0.037628174,-0.023391724,-0.045013428,-0.013114929,-0.058410645,0.007205963,0.029876709,0.048706055,0.014373779,-0.016357422,-0.05419922,0.0008864403,-0.02583313,0.012413025,-0.062408447,-0.024475098,0.015808105,0.009895325,-0.031219482,0.046936035,0.010719299,-0.0062217712,0.022232056,0.034606934,-0.0026798248,0.012046814,-0.017974854,0.002445221,0.043792725,-0.044555664,0.015586853,-0.005836487,0.054534912,-0.03125,0.03375244,0.0066490173,0.042755127,0.029281616,-0.025405884,-0.057373047,0.017074585,0.00053167343,-0.0071792603,0.03555298,-0.016174316,-0.019378662,-0.025253296,0.049926758,-0.020614624,0.00074768066,0.00447464,0.022628784,0.03970337,-0.009468079,-0.015296936,-0.040802002,-0.014144897,-0.026107788,0.029067993,0.009407043,0.02709961,-0.002292633,0.0060539246,-0.017425537,-0.016448975,-0.021209717,0.0074501038,-0.02180481,-0.0069885254,0.0053482056,-0.0058517456,0.019073486,0.0037193298,-0.005405426,0.014259338,0.022583008,0.012886047,-0.013977051,-0.033447266,-0.030258179,-0.0009880066,-0.028137207,0.013687134,0.038909912,0.00059604645,0.0140686035,-0.009918213,-0.026107788,0.015159607,0.0146865845,0.02935791,0.008583069,-0.010437012,-0.051574707,-0.081970215,-0.033691406,-0.011909485,0.005645752,0.021591187,0.003063202,0.04196167,0.02949524,-0.015129089,-0.059417725,0.049468994,-0.04611206,-0.0010690689,0.042388916,-0.006515503,-0.015129089,0.0011529922,0.009811401,0.0045394897,0.039154053,0.011375427,0.009033203,0.044677734,0.031311035,0.0035743713,-0.008262634,0.026519775,0.018737793,0.0056648254,-0.00043845177,-0.05618286,0.013244629,-0.0018949509,-0.016021729,-0.044158936,-0.08166504,0.020874023,0.04046631,0.05126953,0.02444458,0.03250122,0.0036334991,-0.061798096,-0.010177612,-0.029647827,0.0048332214,-0.02659607,-0.044677734,0.010772705,0.00012791157,0.024765015,-0.024780273,0.048431396,-0.037139893,0.0007596016,-0.03048706,0.07562256,-0.0390625,0.007827759,0.016159058,0.01159668,0.05734253,0.05859375,-0.028869629,0.022415161,0.015960693,-0.029205322,0.0009703636,0.042175293,-0.02583313,-0.0030117035,-0.066101074,-0.05206299,0.013206482,0.02192688,-0.00019097328,-0.016418457,0.00059843063,0.029174805,-0.00054597855,-0.018203735,-0.0071907043,0.018676758,-0.009712219,-0.059509277,-0.011444092,-0.047302246,0.004501343,0.046875,0.007331848,-0.013069153,-0.0031375885,-0.01940918,0.016326904,0.033966064,0.00957489,-0.0021858215,-0.030090332,0.029327393,-0.0011415482,0.0129470825,0.013031006,0.050964355,0.032806396,0.023895264,0.042663574,0.020874023,-0.015701294,-0.046691895,-0.013267517,-0.059051514,-0.019638062,0.03265381,-0.026138306,0.01399231,-0.03302002,-0.025482178,0.010246277,0.013511658,-0.010345459,-0.0022258759,0.018859863,0.0040130615,-0.044555664,-0.07946777,-0.034606934,0.013671875,0.08526611,0.0262146,-0.011672974,-0.031555176,-0.018829346,0.015731812,-0.0011463165,0.041259766,-0.0138549805,-0.019577026,-0.02468872,-0.025421143,0.0034885406,-0.0024604797,0.032684326,0.01651001,0.0062789917,0.021484375,0.028518677,0.012519836,-0.017654419,-0.018600464,0.009429932,0.003780365,-0.0013389587,-0.010307312,0.064941406,-0.007827759,-0.022644043,-0.049621582,0.030517578,0.002571106,0.039215088,-0.03668213,-0.0036907196,0.0031661987,-0.015548706,-0.024429321,-0.01713562,0.008224487,0.008529663,-0.048065186,-0.07910156,0.038604736,-0.011619568,0.003786087,0.010360718,0.006793976,0.019622803,-0.014930725,0.0143966675,-0.01259613,-0.0181427,-0.039031982,-0.023147583,-0.02178955,-0.05303955,-0.028869629,-0.04119873,0.03189087,-0.02709961,0.03414917,-0.002532959,-0.025787354,0.02545166,0.016784668,0.008087158,0.028869629,-0.0036792755,0.0070648193,0.034698486,-0.0050849915,-0.055267334,0.019958496,0.0024375916,0.007247925,0.03479004,0.049987793,-0.0015411377,-0.018630981,0.037475586,-0.0031700134,-0.020492554,-0.038024902,-0.0049209595,-0.0046424866,0.0019989014,-0.01939392,-0.04473877,0.029724121,0.025436401,-0.051696777,-0.047851562,0.030029297,0.039154053,-0.031921387,0.020568848,0.0014438629,0.04660034,-0.033447266,0.032958984,0.0004785061,0.018600464,0.03277588,0.0146484375,-0.008613586,-0.010437012,-0.019302368,-0.007865906,0.0107421875,-0.012557983,0.0073127747,0.0034255981,0.035186768,-0.009490967,0.009880066,-0.026367188,-0.02267456,-0.018432617,-0.008460999,-0.018188477,0.030563354,0.007381439,0.014953613,0.005970001,0.02027893,0.025039673,-0.0064201355,-0.00013554096,-0.009925842,0.04562378,0.007572174,0.031402588,-0.004878998,0.008010864,0.017913818,-0.041503906,-0.015991211,0.020141602,-0.0050354004,-0.011253357,-0.04385376,-0.026489258,0.0038146973,0.033599854,0.030441284,0.014801025,0.017547607,0.005683899,-0.016036987,-0.009109497,0.0140686035,0.012893677,-0.040771484,-0.053222656,-0.0004479885,0.016647339,0.03466797,-0.009880066,0.010017395,-0.0262146,-0.0098724365,0.018432617,-0.037261963,0.0016937256,-0.01133728,-0.009216309,-0.0014848709,0.013801575,0.010925293,-0.010917664,-0.048461914,0.017440796,-0.016113281,0.074279785,-0.044036865,0.04486084,-0.0018529892,-0.029785156,-0.0019054413,0.033416748,0.018569946,0.038879395,0.024780273,0.034484863,-0.024993896,0.04977417,-0.019973755,0.01499176,-0.009819031,-0.056121826,-0.010383606,-0.02368164,-0.005455017,0.045196533,-0.030761719,-0.0028572083,-0.03741455,-0.029327393,-0.010070801,-0.045898438,0.02809143,0.030181885,0.04525757,-0.021347046,0.014602661,0.012290955,0.0070266724,-0.0035648346,-0.0231781,-0.007133484,0.009094238,0.016220093,0.024368286,-0.02571106,-0.013381958,0.00856781,0.029678345,-0.028015137,-0.022338867,0.015731812,-0.00055933,-0.026611328,0.03289795,-0.004299164,-0.028564453,-0.0017852783,-0.058258057,-0.021194458,-0.013153076,0.015357971,0.02041626,-0.004585266,-0.019012451,0.0051994324,-0.016464233,0.029327393,-0.021499634,-0.010429382,-0.043640137,0.0020141602,0.0016345978,0.025131226,0.017059326,-0.01739502,-0.0011539459,-0.017745972,-0.04675293,-0.0048294067,0.02482605,-0.013015747,0.011772156,-0.026870728,-0.032409668,0.00920105,-0.03286743,-0.021560669,-0.008796692,-0.017425537,-0.0021743774,-0.01146698,0.0063209534,0.044403076,-0.0041007996,-0.020187378,0.00022673607,0.009399414,0.02078247,0.039154053,0.01537323,-0.015609741,-0.018859863,0.0071487427,0.002609253,-0.00198555,-0.045013428,0.0021705627,-0.013259888,-0.005634308,-0.0029525757,0.020111084,-0.02722168,0.020507812,0.05227661,-0.00920105,-0.0053596497,0.0073013306,-0.030288696,0.018569946,0.052764893,-0.005531311,0.006996155,-0.024108887,0.017791748,0.0029258728,0.026748657,-0.00844574,0.0309906,-0.017868042,-0.0057640076,0.0010824203,-0.004211426,-0.009063721,-0.044433594,-0.014053345,-0.07318115,-0.016403198,-0.0052948,-0.03869629,0.01789856,0.0062713623,-0.0118637085,-0.06921387,-0.0016670227,0.04296875,-0.0234375,0.0058517456,-0.0037345886,0.054901123,0.00027942657,-0.031921387,-0.012634277,0.010444641,-0.046051025,-0.006958008,-0.0390625,0.024169922,-0.028381348,-0.0070152283,0.023635864,-0.00680542,0.020141602,-0.010498047,0.028518677,-0.017684937,0.017166138,-0.018035889,0.0042266846,-0.009651184,-0.041381836,0.052612305,-0.034301758,0.031707764,0.037261963,0.02406311,0.007827759,0.0019102097,0.028457642,-0.02772522,-0.008575439,0.03503418,0.020065308,0.025863647,-0.00093126297,0.021347046,0.009025574,0.022506714,-0.014854431,0.0065727234,0.0058784485,-0.042022705,-0.00970459,0.030441284,-0.03768921,-0.00016534328,-0.0076904297,0.0062446594,-0.0030078888,0.005996704,0.004863739,-0.029022217,-0.00022828579,-0.028167725,-0.008811951,0.019973755,-0.0051498413,-0.0059432983,0.034973145,-0.0075416565,0.00504303,0.017181396,0.0038337708,0.016036987,0.044281006,0.0016088486,0.0034446716,0.016998291,0.018463135,0.02684021,-0.022659302,0.009544373,-0.036895752,-0.00043416023,-0.013397217,0.0093307495,-0.0067443848,-0.025390625,0.0146865845,-0.017349243,0.000323534,-0.0045661926,-0.047424316,-0.020385742,-0.022201538,-0.010047913,-0.005592346,-0.020370483,0.00116539,0.007904053,0.006969452,0.0129470825,-0.026672363,0.035888672,-0.002128601,-0.009498596,0.020553589,0.02281189,-0.01234436,-0.029754639,0.007133484,-0.005050659,-0.018707275,0.021972656,-0.01928711,-0.0056915283,0.02760315,0.023162842,-0.0104599,0.011070251,0.045806885,-0.0335083,0.0104599,0.014785767,0.015945435,-0.04083252,0.0087890625,-0.027191162,0.022064209,0.0053100586,0.032073975,0.012321472,-0.0103302,-0.011940002,0.023483276,0.03250122,-0.01374054,0.024002075,0.004360199,0.045715332,-0.011367798,-0.013748169,-0.020263672,-0.004119873,0.006755829,0.022949219,-0.0052719116,0.024154663,-0.00422287,-0.002412796,0.0073432922,-0.029067993,0.020874023,0.022109985,0.015274048,-0.03805542,-0.040802002,-0.020339966,0.0019054413,-0.034484863,0.006690979,0.0032405853,0.036499023,0.029724121,0.025634766,0.00548172,-0.014091492,0.001127243,-0.025009155,-0.034179688,-0.019866943,-0.009155273,0.021148682,-0.0077934265,0.036224365,0.05633545,-0.0033073425,0.02947998,0.034973145,0.015655518,0.01625061,0.0023269653,-0.029296875,0.021453857,-0.0064086914,0.018188477,0.018234253,0.037353516,-0.016403198,0.03338623,-0.0029964447,0.012802124,-0.028289795,0.03378296,0.083862305,0.031021118,0.010925293,0.049835205,-0.0231781,-0.023132324,-0.019500732,-0.019638062,0.052764893,-0.001619339,0.033721924,0.042541504,0.0062217712,-0.001127243,-0.0124435425,-0.010093689,-0.026901245,0.04547119,0.021591187,-0.00016438961,-0.00605011,-0.010292053,0.017303467,-0.023391724,-0.027420044,0.0069389343,0.0075645447,0.010231018,-0.0032138824,0.007896423,-0.023468018,0.00022220612,0.022338867,-0.010185242,-0.024963379,0.05117798,0.023406982,-0.010360718,0.01361084,-0.015838623,0.020309448,-0.009475708,-0.009918213,0.021102905,0.010917664,0.007736206,-0.025299072,0.01675415,-0.012664795,0.021911621,0.045837402,-0.018035889,-0.00308609,0.014564514,-0.01146698,-0.0060577393,0.031066895,0.017532349,0.0075645447,0.03579712,0.033935547,0.01826477,-0.042510986,0.013259888,0.003862381,0.02079773,-0.018981934,-0.006729126,0.013969421,-0.023361206,0.004840851,-0.0026988983,-0.035186768,0.04486084,0.022537231,-0.012359619,-0.0049591064,-0.012329102,0.022735596,-0.014930725,-0.018035889,-0.00036597252,0.0076789856,0.02772522,0.029296875,0.03741455,-0.014701843,0.03475952,0.024398804,-0.010108948,-0.0011320114,0.010444641,-0.018035889,-0.013595581,-0.010414124,-0.012611389,-0.055877686,0.012420654,-0.008033752,0.010070801,0.01701355,-0.00969696,-0.01133728,-0.0047416687,0.019058228,0.013626099,-0.0023384094,0.014167786,-0.019226074,0.0037574768,0.031433105,-0.027038574,0.0059432983,-0.00491333,0.010284424,0.005115509,-0.010734558,-0.03491211,-0.016662598,-0.008453369,-0.04159546,0.00044083595,0.024414062,0.0048713684,0.06384277,-0.0049552917,-0.019851685,-0.010383606,0.03564453,0.0014152527,0.00504303,-0.001572609,-0.0029678345,-0.030517578,0.044799805,0.028747559,-0.002861023,0.0115356445,-0.010536194,-0.02722168,-0.02079773,-0.00078725815,0.0181427,-0.018493652,-0.010719299,0.0033931732,0.03591919,-0.0064048767,-0.044647217,-0.009666443,-0.019485474,-0.019165039,-0.029724121,0.020126343,-0.0014371872,0.018554688,0.0075149536,0.024230957,-0.029296875,0.060028076,-0.019897461,0.047180176,-0.0309906,0.00065898895,0.048950195,0.010314941,0.041046143,-0.014282227,0.0011415482,-0.012367249,0.011756897,0.035858154,0.01083374,0.029678345,0.0023117065,-0.0146865845,0.034484863,-0.009208679,0.016464233,0.0015649796,0.0061912537,0.023284912,-0.0064315796,0.0048980713,-0.010139465,0.007534027,0.009208679,0.024612427,-0.0034751892,-0.0024051666,-0.037872314,0.010154724,0.032714844,0.017196655,0.018173218,-0.0022907257,-0.017990112,0.029647827,-0.011001587,-0.019454956,-0.019348145,0.008392334,-0.07873535,-0.019180298,0.009063721,0.005054474,-0.022735596,0.05795288,0.004047394,-0.007083893,0.03164673,0.03149414,-0.0021190643,0.04208374,0.001121521,0.035491943,0.043518066,-0.0034503937,-0.012039185,0.03173828,0.022872925,-0.022903442,0.020309448,0.038116455,0.001537323,0.027709961,-0.004676819,-0.011253357,-0.0053253174,0.0031108856,-0.0029087067,0.0014762878,-0.020477295,-0.0050964355,-0.0051574707,0.029251099,-0.013893127,-0.01576233,-0.0231781,-0.017532349,0.002811432,0.034210205,0.01737976,-0.034606934,0.019561768,0.0024547577,-0.0045166016,-0.0075912476,0.011459351,-0.008132935,-0.04714966,0.009635925,0.023376465,-0.0019817352,0.03378296,-0.02394104,-0.007095337,0.02406311,0.038146973,0.036987305,0.008895874,-0.0050964355,0.024368286,-0.004447937,0.00868988,-0.01737976,-0.005443573,0.004047394,0.010787964,0.016708374,-0.013931274,0.017028809,-0.014305115,0.010345459,-0.0037670135,0.014205933,0.024551392,-0.0124435425,-0.0009570122,0.02015686,0.036376953,-0.011512756,-0.029647827,-0.011886597,0.029647827,0.075805664,0.0055122375,0.0029258728,0.016342163,0.031982422,0.017578125,0.052825928,0.003929138,0.020080566,0.007129669,-0.002357483,-0.009887695,0.027420044,-0.0049362183,-0.027755737,0.024215698,-0.04348755,-0.025268555,0.019973755,0.02116394,0.011985779,-0.04562378,0.0058670044,-0.023529053,-0.047027588,0.00005543232,-0.0019550323,-0.0020580292,0.0054473877,-0.007686615,0.02709961,-0.002008438,-0.021942139,-0.018417358,0.0070228577,-0.02078247,-0.05206299,-0.017669678,-0.01651001,0.015731812,-0.03189087,0.0066986084,0.0020751953,0.010612488,-0.015930176,-0.0015239716,-0.0018529892,0.005420685,0.019607544,0.010658264,0.0074768066,-0.009460449,-0.033050537,-0.016281128,-0.010284424,0.0012769699,0.022354126,-0.021713257,0.027786255,0.02128601,0.009651184,-0.0057907104,0.0022888184,-0.0050239563,-0.016418457,-0.022827148,-0.010131836,0.018341064,0.0027389526,0.01638794,-0.025527954,0.033691406,-0.009239197,-0.034210205,0.012992859,0.04324341,0.01878357,0.016448975,-0.008506775,0.0069503784,-0.05215454,-0.001660347,-0.010894775,0.0022621155,0.011436462,-0.0018758774,-0.005718231,0.019088745,0.010757446,-0.0015583038,0.0010900497,0.038513184,0.020187378,0.015319824,0.0038871765,-0.0076904297,0.00957489,-0.0413208,-0.028213501,0.010032654,0.03677368,0.011306763,0.014305115,-0.01739502,0.0003361702,-0.0030269623,-0.010787964,-0.0039787292,0.005256653,-0.04446411,-0.010879517,-0.009880066,0.030639648,0.024353027,0.0014829636,-0.0062408447,0.01121521,-0.018173218,-0.025863647,-0.020050049,0.048217773,0.022018433,-0.02444458,-0.0124053955,0.01914978,-0.010978699,-0.01838684,-0.0034980774,-0.06384277,-0.024627686,-0.005001068,-0.0064964294,0.012260437,0.011054993,0.009613037,-0.00920105,0.015007019,-0.01751709,0.021133423,0.016830444,-0.014152527,-0.016555786,0.024276733,0.01737976,0.0042381287,0.020889282,0.032226562,-0.009185791,0.009025574,-0.005683899,-0.0026168823,-0.035095215,0.01777649,0.005783081,-0.009391785,0.021881104,-0.015396118,0.028671265,0.0014019012,0.0118637085,-0.018005371,0.0050964355,0.014785767,-0.025146484,-0.020263672,-0.0009393692,-0.0032730103,-0.03237915,0.013076782,0.014190674,0.014305115,-0.03137207,0.040771484,-0.016998291,-0.008598328,0.010864258,0.017913818,-0.019485474,-0.010940552,0.030212402,-0.0013389587,-0.016189575,-0.009429932,-0.021606445,-0.010643005,-0.033111572,-0.00806427,-0.01524353,0.005142212,0.01663208,-0.007865906,0.0418396,0.010070801,0.009994507,0.022140503,0.009223938,0.021560669,0.006427765,0.046142578,0.024475098,-0.02168274,0.01121521,0.0035381317,-0.031021118,0.0008444786,-0.0022945404,0.014144897,-0.005329132,0.0009803772,0.009742737,0.011650085,0.028457642,0.011192322,-0.0024967194,0.013877869,-0.047851562,-0.014717102,-0.022033691,-0.0126571655,0.027420044,0.025680542,0.012451172,-0.006290436,-0.0048828125,0.03048706,0.044189453,-0.01663208,-0.011741638,-0.0015277863,0.007949829,-0.024383545,0.032104492,0.006515503,-0.02607727,-0.01890564,-0.013534546,-0.021133423,0.0317688,-0.0046539307,0.0008325577,-0.0005745888,-0.029556274,-0.03488159,0.008430481,-0.017196655,0.00111866,0.021026611,-0.011245728,0.01524353,0.010299683,-0.02217102,0.016555786,0.026672363,-0.032440186,0.013473511,0.030670166,0.010368347,-0.0049438477,0.0005054474,-0.04055786,-0.013183594,0.0015048981,-0.015220642],"createdAt":"2026-04-18T18:53:41.046Z","updatedAt":"2026-04-27T14:34:33.348Z","lastSeenAt":"2026-04-27T14:34:33.348Z","tsv":"'/api/v1/portfolios/92/performance':111 '/request':11,24 '0.02':10,23,75 '000':79 '20':78 '402':207 '6':83 '92':38 'accept':149 'across':52 'ai/ml':55 'alongsid':135 'analyt':54 'api':51,86,170 'appear':134 'application/json':146 'attach':95 'avail':198 'base':8,21,72,80 'base-network' 'bodi':220 'broader':44,136 'caller':93 'categori':59,140 'challeng':160,209 'confirm':202 'connect':179 'content':185 'data':3,16,34,53,139 'decim':84 'difficult':215 'discover':156 'doc':169 'document':129,164,212 'endpoint':28,61,109,131,148,200 'exampl':196 'explicit':132 'extrem':166 'financ':137 'finance/web3':56 'financial performance API' 'header':100 'id':37 'infrastructur':58 'investment performance' 'json-api' 'key':87 'know':217 'land':125 'limit':90 'live':203 'lowpaymentfee.com':30 'mark':154 'metric':116 'micropay':6,19 'mime':143 'network':9,22,73 'no-api-key' 'offer':46 'openapi':189 'output':162 'page':126,174 'part':41 'particular':119 'path':110 'pay':48 'pay-per-request':47 'payload':197 'payment':65,99,105 'per':49,76 'perform':2,15,33,115 'platform':45,123 'portfolio':1,14,32,36,120 'portfolio analytics' 'portfolio returns' 'portfolio tracking' 'portfolio-performance' 'post':150 'price':171 'prompt':181 'proof':106 'proper':206 'protocol':66 'rate':89 'readm':173 'render':176 'request':50,77,151,219 'request/response':192 'requir':92 'respons':142,227 'return':31,114,204 'schema':163,193 'send':222 'settl':67 'shape':225 'simpli':94 'spars':167 'spec':190 'specif':108 'suggest':112 'take':228 'though':121 'type':144 'unit':81 'usdc':13,26,69 'usdc-settlement' 'use':62 'valid':103 'via':4,17 'wallet':180 'without':211 'x':98 'x-payment':97 'x402':5,18,64,104,159,208 'x402 finance API' 'x402-payment'","prices":[{"id":"2d17e166-0074-459d-8216-9ba4347c798d","listingId":"fe8e11c8-b64e-4f0a-afd2-302d7352b605","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/portfolios/92/performance","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:53:41.046Z"}],"sources":[{"listingId":"fe8e11c8-b64e-4f0a-afd2-302d7352b605","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/portfolios/92/performance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:53:41.046Z","lastSeenAt":"2026-04-27T14:34:33.348Z"}],"details":{"listingId":"fe8e11c8-b64e-4f0a-afd2-302d7352b605","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/portfolios/92/performance \\\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 endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/portfolios/92/performance"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/portfolios/92/performance"}],"useCases":["Retrieve performance metrics for a specific investment portfolio","Integrate portfolio performance data into dashboards or reporting tools","Automate portfolio monitoring via agent-driven micropayments"],"bestFor":["Agents or apps needing on-demand portfolio performance data without subscription commitments","Developers experimenting with x402 pay-per-call APIs on Base","Low-volume consumers who want to avoid API key management"],"notFor":["Users needing detailed API documentation or request/response schemas before integrating","High-frequency bulk data retrieval where per-request pricing adds up","Anyone needing portfolio IDs other than 92 (no documentation on available portfolios)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:57.661Z"},"updatedAt":"2026-04-27T14:34:33.348Z"}}