{"id":"fc0236c7-29e6-4812-8b53-ddb038df3d70","shortId":"kMFng4","kind":"x402","title":"Portfolio performance data via x402 micropayment on Base network for $0.02/request.","tagline":"Portfolio performance data via x402 micropayment on Base network for $0.02/request.","description":"This endpoint at lowpaymentfee.com provides portfolio performance data accessible via the x402 payment protocol. The specific resource `/api/v1/portfolios/10/performance` returns JSON data related to portfolio #10's performance metrics. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request (20,000 base units with 6 decimals).\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced uniformly at $0.02 per request. The platform requires no API keys, no rate limits, and no upfront commitments; access is gated entirely by x402 micropayments.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what the portfolio performance response contains. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual data schema and capabilities must be inferred from the endpoint path alone.","tags":[],"capabilities":["x402-payment","portfolio-performance","usdc-base-network","pay-per-request","no-api-key","json-response"],"categories":["finance"],"synonyms":["portfolio analytics","investment performance","portfolio tracking","financial data API","portfolio returns","x402 finance API"],"warnings":["No API documentation available — all doc pages return only 'Connect wallet' with no content","No request or response schema provided; data format is entirely unknown","Only portfolio ID 10 is referenced; unclear if other portfolio IDs are supported or what they represent","Platform appears to be a generic multi-category API host; quality and reliability of underlying data sources is unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/portfolios/10/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/10/performance","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 OpenAPI schema, no request/response examples, and all documentation pages are empty stubs. The actual data returned is unknown beyond what the URL path implies.","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":"2026-04-19T08:20:30.793Z","embedding":[0.0029239655,-0.0046310425,0.02746582,0.014709473,0.022140503,-0.007896423,-0.041412354,0.00573349,0.07556152,-0.03253174,0.014854431,-0.054107666,-0.021102905,-0.05303955,0.010345459,0.000073611736,0.029006958,-0.007534027,-0.04046631,0.056518555,0.032592773,-0.013511658,-0.01461792,0.0069503784,-0.009063721,0.00085020065,-0.015434265,-0.00034499168,-0.015274048,-0.035461426,0.019241333,-0.02545166,-0.011230469,0.012237549,-0.027359009,-0.0044670105,0.016815186,0.022949219,0.027130127,-0.0040283203,-0.0007247925,-0.051727295,0.02998352,0.0032024384,-0.026535034,-0.0028381348,0.033355713,-0.039733887,0.04284668,0.021820068,-0.040008545,-0.00315094,-0.023483276,0.01965332,0.016586304,0.017532349,0.033935547,-0.008110046,-0.0063476562,0.0146865845,0.009750366,-0.04220581,0.015609741,-0.012123108,0.00806427,0.03756714,-0.022460938,0.052978516,-0.0021324158,0.080078125,0.015914917,0.039916992,0.014984131,0.016494751,-0.012023926,-0.021697998,-0.011497498,0.03857422,0.002729416,-0.03479004,-0.001288414,0.008460999,-0.060180664,-0.011367798,-0.028259277,-0.057037354,-0.0152282715,-0.0030784607,-0.039611816,0.04006958,-0.075805664,0.003255844,-0.011260986,0.008415222,-0.0003643036,-0.02305603,0.002161026,0.02798462,0.0090408325,0.036743164,0.005569458,-0.034606934,-0.010856628,0.020568848,0.03656006,0.04083252,0.0032787323,0.04135132,-0.010627747,-0.022415161,-0.054626465,-0.019195557,-0.000018417835,0.015403748,0.003419876,-0.0037517548,-0.022644043,0.004837036,-0.01991272,0.0054397583,-0.06695557,0.03729248,0.029159546,-0.0011920929,0.0048217773,-0.040649414,-0.00806427,0.0017538071,-0.024749756,-0.034454346,0.020401001,0.011329651,0.0057792664,-0.024139404,-0.016326904,0.005584717,-0.019424438,-0.032409668,-0.050079346,-0.016036987,0.022903442,-0.043182373,0.044799805,0.0065193176,-0.07385254,0.027801514,-0.010604858,0.023590088,-0.004196167,-0.012077332,0.010658264,0.028442383,-0.021087646,0.0018081665,-0.0079956055,-0.04562378,-0.021987915,0.016616821,0.0006427765,0.02508545,0.00592041,0.030715942,-0.012893677,0.005493164,0.020004272,0.033294678,-0.01158905,-0.059295654,-0.079711914,-0.016479492,0.020980835,-0.014198303,-0.006111145,-0.016479492,-0.017059326,-0.07824707,-0.006164551,-0.0284729,0.012916565,-0.039489746,-0.023132324,-0.033172607,0.011161804,-0.011924744,-0.05895996,0.023284912,-0.010261536,0.058746338,0.008735657,0.045806885,0.04449463,0.0146102905,0.03363037,0.03515625,-0.055145264,-0.01977539,-0.005783081,-0.006614685,-0.010269165,0.002210617,0.004699707,-0.006175995,0.050476074,0.06060791,0.010574341,-0.02520752,-0.00945282,-0.06365967,-0.02659607,0.00541687,0.028579712,0.030532837,-0.019226074,0.0072898865,-0.014427185,-0.036315918,0.008728027,0.03677368,0.014823914,0.05895996,0.025939941,0.033935547,0.043945312,0.006454468,-0.021972656,0.042510986,0.0284729,-0.0009675026,0.01134491,-0.0635376,0.025802612,0.0079956055,-0.02998352,0.018127441,0.0012683868,-0.0007457733,-0.029083252,-0.01939392,0.008972168,-0.028442383,0.0017709732,-0.018493652,-0.008636475,0.03314209,0.026519775,-0.0013341904,-0.042510986,-0.078125,0.020065308,0.018707275,0.03463745,-0.003156662,-0.0052719116,-0.013504028,0.0048103333,-0.043701172,0.01096344,0.05731201,-0.018722534,-0.01272583,0.010269165,-0.018356323,-0.025543213,-0.0073890686,-0.024383545,-0.027999878,-0.046295166,-0.006893158,-0.06719971,0.020019531,0.037628174,0.040649414,0.014930725,-0.022567749,-0.04876709,0.003835678,-0.02947998,0.013710022,-0.064941406,-0.022491455,0.0178833,0.004219055,-0.023468018,0.039245605,0.016494751,-0.0071372986,0.02279663,0.026290894,-0.0038261414,-0.0023612976,-0.014015198,0.0019683838,0.039764404,-0.049926758,0.011703491,-0.005290985,0.05596924,-0.03012085,0.03213501,-0.009063721,0.046020508,0.035247803,-0.024032593,-0.0541687,0.025756836,0.004562378,0.0032615662,0.031829834,-0.024627686,-0.016311646,-0.028259277,0.058746338,-0.020721436,-0.0010766983,0.005493164,0.030303955,0.039733887,-0.021896362,-0.026794434,-0.05114746,-0.021194458,-0.03781128,0.017974854,0.0075950623,0.03265381,0.00023543835,0.014724731,-0.016906738,-0.014167786,-0.02458191,0.003314972,-0.010139465,0.01247406,0.0043907166,-0.018692017,0.030349731,0.012107849,0.0031356812,0.0154953,0.02078247,0.005378723,-0.016204834,-0.034484863,-0.032592773,0.012893677,-0.019882202,0.018630981,0.032104492,-0.0005683899,0.0154418945,-0.003578186,-0.021774292,0.016540527,0.016220093,0.02960205,0.0044670105,-0.0013303757,-0.050628662,-0.086242676,-0.028442383,-0.02067566,0.021102905,0.02508545,0.0036640167,0.03152466,0.030960083,-0.018051147,-0.05432129,0.039978027,-0.056732178,0.0049057007,0.045806885,-0.01335907,-0.014907837,-0.0079193115,0.004211426,0.000104665756,0.044189453,0.012397766,0.015945435,0.041931152,0.021011353,0.010482788,-0.0014648438,0.02645874,0.022750854,-0.0018424988,0.003686905,-0.053527832,0.01878357,0.0011262894,-0.026260376,-0.040771484,-0.08538818,0.023620605,0.044006348,0.059448242,0.028518677,0.03262329,-0.0030078888,-0.047058105,-0.008346558,-0.04574585,0.005050659,-0.046417236,-0.06213379,0.009117126,0.0074310303,0.01966858,-0.016906738,0.042816162,-0.042114258,0.00065755844,-0.028518677,0.061828613,-0.032043457,0.004875183,0.012641907,0.010688782,0.05267334,0.04373169,-0.028411865,0.040374756,0.020629883,-0.029815674,0.0078125,0.049346924,-0.023162842,-0.013839722,-0.06137085,-0.05154419,0.0115737915,-0.0051612854,0.0038261414,-0.0062675476,-0.0042152405,0.03086853,0.010177612,-0.021942139,0.0065689087,0.020401001,-0.002155304,-0.05847168,-0.016433716,-0.050476074,-0.002401352,0.045135498,0.0039978027,-0.015319824,-0.004436493,-0.013191223,0.020309448,0.02381897,0.0158844,-0.004737854,-0.035491943,0.027359009,-0.013755798,0.0063591003,0.015098572,0.03765869,0.01940918,0.0076141357,0.057556152,0.022598267,-0.02279663,-0.04220581,-0.0068740845,-0.0546875,-0.017562866,0.03604126,-0.024642944,-0.009803772,-0.02420044,-0.017410278,0.019699097,0.011810303,-0.018173218,0.0037784576,0.012130737,0.0018224716,-0.03955078,-0.08062744,-0.029342651,0.01977539,0.10076904,0.016921997,-0.01309967,-0.0362854,-0.017166138,0.01739502,-0.0026741028,0.05618286,-0.014595032,-0.017974854,-0.017715454,-0.03692627,0.006706238,-0.01525116,0.021820068,0.027389526,0.0017585754,0.016601562,0.021942139,0.012413025,-0.017501831,-0.013000488,0.009750366,0.0014362335,0.0065460205,-0.007194519,0.059295654,0.0004234314,-0.014801025,-0.043823242,0.023071289,0.0026054382,0.04071045,-0.03677368,0.0030994415,0.007232666,-0.013427734,-0.018096924,-0.020828247,0.010543823,0.00945282,-0.04071045,-0.072387695,0.032196045,-0.024139404,0.011276245,0.010353088,0.0062675476,0.018325806,-0.011627197,0.017837524,-0.018875122,-0.012702942,-0.04437256,-0.03314209,-0.013244629,-0.039886475,-0.033355713,-0.032470703,0.0236969,-0.021575928,0.03149414,-0.01914978,-0.034118652,0.028167725,0.032806396,0.009597778,0.0107803345,-0.007221222,-0.0021629333,0.02998352,-0.0024681091,-0.056732178,0.01928711,0.0055007935,0.008430481,0.02960205,0.06137085,-0.0006966591,-0.020477295,0.025558472,-0.0064201355,-0.0178833,-0.044067383,-0.006374359,0.0049324036,0.000048995018,-0.015174866,-0.03149414,0.039642334,0.025299072,-0.04321289,-0.042022705,0.027267456,0.038238525,-0.027511597,0.024749756,0.014556885,0.044281006,-0.036315918,0.035888672,-0.00015580654,0.025497437,0.03414917,0.015022278,-0.006839752,-0.001405716,-0.025634766,-0.006427765,0.0068359375,-0.008422852,0.012229919,0.012123108,0.036834717,0.00062942505,0.015899658,-0.027999878,-0.020263672,-0.006690979,-0.0036945343,-0.0131073,0.038085938,0.014274597,0.01828003,0.006450653,0.021957397,0.026687622,-0.008735657,-0.0064849854,-0.007835388,0.04650879,0.00095176697,0.030059814,-0.0016012192,0.010314941,0.018753052,-0.042022705,-0.0104599,0.017623901,-0.00548172,-0.012031555,-0.0418396,-0.028366089,0.017242432,0.024673462,0.032318115,0.010665894,0.008636475,0.01235199,-0.019439697,-0.015655518,0.01423645,0.01373291,-0.04647827,-0.06365967,0.0044174194,0.022109985,0.014183044,-0.01586914,0.030227661,-0.019241333,-0.007972717,0.013900757,-0.037017822,-0.01083374,-0.0035037994,-0.0073051453,0.010734558,0.0034046173,0.01737976,-0.013717651,-0.064086914,0.01914978,-0.023483276,0.07788086,-0.039978027,0.03439331,-0.001121521,-0.017532349,0.0010595322,0.0209198,0.02168274,0.03375244,0.026519775,0.037017822,-0.028213501,0.04800415,-0.031707764,0.014297485,-0.0077171326,-0.050750732,-0.012428284,-0.025558472,-0.0022697449,0.04849243,-0.037078857,-0.004142761,-0.047454834,-0.02923584,-0.01083374,-0.03869629,0.019973755,0.037475586,0.048461914,-0.03439331,0.017471313,0.014945984,0.009590149,-0.0039138794,-0.027999878,-0.010047913,0.015083313,0.012161255,0.020553589,-0.017089844,-0.0022392273,0.003610611,0.029647827,-0.020095825,-0.034606934,0.022033691,-0.007286072,-0.021575928,0.01789856,-0.006137848,-0.022247314,-0.0030326843,-0.051574707,-0.015975952,-0.0017194748,0.02709961,0.014389038,-0.0073623657,-0.013542175,0.0127334595,-0.014945984,0.023529053,-0.014709473,-0.013694763,-0.05053711,-0.0020008087,0.005027771,0.02848816,0.01033783,-0.021255493,-0.007980347,-0.026275635,-0.057769775,-0.002937317,0.019943237,-0.0211792,0.011650085,-0.019454956,-0.020401001,0.0051498413,-0.021591187,-0.013015747,-0.00258255,-0.0071640015,0.0012693405,-0.0154800415,0.0067825317,0.043945312,-0.008926392,-0.018295288,0.004058838,0.009719849,0.01499176,0.044952393,0.02003479,-0.020599365,-0.019119263,0.0068855286,0.005531311,0.004486084,-0.043182373,0.011940002,-0.024368286,-0.0015335083,0.0000019669533,0.021896362,-0.019165039,0.019821167,0.06298828,0.0024433136,-0.005680084,0.015914917,-0.024627686,0.02243042,0.049621582,-0.006023407,0.0014972687,-0.03265381,0.017959595,0.0023441315,0.027923584,-0.0012311935,0.028411865,-0.019989014,-0.0034885406,0.00059604645,-0.009727478,-0.0028877258,-0.04711914,-0.015945435,-0.07165527,-0.010879517,-0.012390137,-0.037841797,0.021148682,0.019363403,-0.003047943,-0.06738281,0.010169983,0.043640137,-0.016967773,0.009841919,-0.0010957718,0.049438477,0.011405945,-0.024536133,-0.015899658,0.0036964417,-0.048919678,-0.011985779,-0.028289795,0.027435303,-0.022781372,-0.010147095,0.015960693,-0.0019454956,0.024963379,-0.013641357,0.03353882,-0.010421753,0.017868042,-0.020507812,0.0038776398,-0.013961792,-0.040039062,0.052246094,-0.03375244,0.040100098,0.03741455,0.02859497,-0.0020370483,0.01020813,0.032684326,-0.026763916,-0.0065574646,0.036834717,0.03314209,0.014297485,0.0011234283,0.012184143,0.018661499,0.024246216,-0.018325806,-0.0027332306,0.0037975311,-0.034576416,-0.005355835,0.027282715,-0.018188477,-0.0073432922,-0.017166138,0.016647339,0.003709793,0.0033626556,0.006549835,-0.03125,0.0025024414,-0.019241333,0.00422287,0.005218506,-0.010543823,-0.00012373924,0.023345947,-0.014297485,0.009475708,0.013450623,0.00894928,0.013679504,0.04473877,0.0043640137,-0.012817383,0.010940552,0.008026123,0.029647827,-0.02142334,0.016235352,-0.046966553,-0.0014600754,-0.024002075,0.015457153,-0.009803772,-0.0309906,0.007637024,-0.019241333,0.0010566711,-0.01272583,-0.046051025,-0.016708374,-0.018707275,-0.014778137,-0.012207031,-0.013587952,-0.00072717667,0.021972656,0.012863159,0.00018203259,-0.028259277,0.04095459,0.0034980774,-0.007522583,0.01876831,0.027175903,-0.010955811,-0.03540039,-0.00077056885,-0.0000371933,-0.03363037,0.026412964,-0.015823364,0.0005812645,0.033294678,0.008712769,-0.0033397675,0.011810303,0.038726807,-0.028442383,0.005012512,0.016845703,0.021606445,-0.042144775,0.0096588135,-0.025283813,0.024795532,-0.0028743744,0.03225708,0.01525116,-0.012962341,-0.013221741,0.018661499,0.020523071,-0.004322052,0.030395508,0.0061073303,0.041992188,-0.017593384,-0.018203735,-0.010002136,-0.005176544,-0.0057144165,0.026672363,0.00035238266,0.01687622,-0.0008568764,-0.0055885315,0.00737381,-0.029266357,0.033355713,0.024780273,0.017654419,-0.03479004,-0.035461426,-0.025894165,0.0012168884,-0.03967285,0.008155823,0.005252838,0.03842163,0.028320312,0.03265381,0.003572464,-0.009109497,0.009063721,-0.022262573,-0.029006958,-0.018814087,-0.005432129,0.026535034,-0.001045227,0.035736084,0.055145264,0.0004348755,0.034484863,0.03488159,0.016067505,0.015991211,0.0077400208,-0.023788452,0.031051636,-0.008361816,0.013885498,0.032073975,0.036834717,-0.01675415,0.026947021,-0.0064048767,0.009162903,-0.037261963,0.03125,0.08685303,0.032470703,0.00013613701,0.04888916,-0.021514893,-0.02407837,-0.008003235,-0.018234253,0.061676025,-0.005569458,0.03237915,0.044799805,0.007671356,-0.0008826256,-0.013244629,-0.019683838,-0.035736084,0.04977417,0.027679443,0.0026931763,-0.006263733,-0.019104004,0.0066223145,-0.027572632,-0.032562256,-0.0008087158,0.011108398,0.013633728,-0.008239746,0.0075683594,-0.027923584,-0.004096985,0.0209198,-0.014144897,-0.01197052,0.04940796,0.015083313,-0.011581421,0.0154418945,-0.017303467,0.033081055,0.00026869774,-0.020843506,0.017471313,0.022079468,0.006755829,-0.020874023,0.019104004,-0.024276733,0.02180481,0.042022705,-0.0178833,-0.004425049,0.02279663,0.000664711,-0.012840271,0.027679443,0.023101807,0.0031223297,0.032226562,0.03829956,0.018371582,-0.0362854,0.020202637,0.012664795,0.016586304,-0.009056091,-0.005748749,0.008506775,-0.020736694,0.016616821,-0.0046195984,-0.041046143,0.034301758,0.012359619,-0.0141067505,-0.010620117,-0.009757996,0.03302002,-0.020599365,-0.023910522,-0.00017595291,0.007270813,0.026824951,0.040649414,0.03793335,-0.015548706,0.020843506,0.023849487,-0.01134491,-0.009315491,0.015777588,-0.013084412,-0.024215698,-0.0037136078,-0.010101318,-0.055664062,0.012145996,-0.008155823,0.009742737,0.0181427,-0.0020008087,-0.023239136,-0.012359619,0.017700195,0.0020103455,-0.0035362244,0.011367798,-0.01902771,0.0052337646,0.034301758,-0.01651001,0.014953613,-0.020874023,-0.012954712,0.000059902668,-0.009513855,-0.038330078,-0.008079529,-0.0064811707,-0.02998352,0.00058460236,0.015777588,0.007297516,0.06384277,-0.0084991455,-0.0151901245,0.00028538704,0.025650024,0.014373779,0.012413025,0.0031547546,-0.0011577606,-0.024246216,0.041381836,0.023345947,-0.0036811829,0.009223938,-0.0009841919,-0.03149414,-0.016983032,0.0036449432,0.027755737,-0.013000488,-0.005958557,0.00856781,0.037902832,-0.0087509155,-0.045654297,0.0005173683,-0.019119263,-0.011947632,-0.030456543,0.014877319,0.00086164474,0.028259277,0.013412476,0.023269653,-0.034484863,0.06512451,-0.02468872,0.044830322,-0.017288208,-0.0040893555,0.04852295,0.020645142,0.03842163,-0.004096985,-0.00027632713,-0.015731812,0.013587952,0.03881836,0.013916016,0.027755737,0.0037975311,-0.014823914,0.028259277,-0.007411957,0.024124146,0.00818634,0.008972168,0.018844604,-0.008041382,0.00248909,-0.008544922,0.009185791,0.016220093,0.023086548,0.00029611588,0.008354187,-0.04019165,0.009162903,0.025161743,0.013427734,0.017150879,0.0061149597,-0.0178833,0.028656006,-0.019424438,-0.022567749,-0.012245178,0.0009832382,-0.06744385,-0.024459839,0.0046958923,0.015602112,-0.020019531,0.059448242,-0.0008544922,0.003780365,0.029220581,0.026260376,-0.011627197,0.037261963,0.013084412,0.041656494,0.046295166,-0.0007133484,-0.0063323975,0.029006958,0.0055160522,-0.012481689,0.02746582,0.038513184,-0.0027198792,0.02949524,-0.0074653625,-0.0011320114,0.0019435883,0.0032920837,-0.0049476624,-0.004814148,-0.013435364,0.001707077,-0.017044067,0.025283813,-0.023391724,-0.014221191,-0.01878357,-0.017471313,0.006515503,0.030456543,0.025253296,-0.029708862,0.021026611,-0.0036201477,-0.0025081635,0.010383606,0.0052337646,-0.01675415,-0.04421997,0.013793945,0.025054932,-0.010932922,0.036743164,-0.03112793,-0.0043411255,0.024429321,0.03540039,0.035308838,0.0072402954,-0.011016846,0.0121536255,-0.012397766,-0.00089120865,-0.0154800415,-0.0034427643,0.013206482,0.0146865845,0.021240234,-0.013320923,0.019821167,-0.019607544,0.011917114,-0.0027332306,0.012359619,0.024246216,-0.008598328,-0.0012111664,0.021057129,0.030456543,-0.0029449463,-0.0289917,-0.005355835,0.027282715,0.08300781,0.0076179504,0.005794525,0.014877319,0.022735596,0.01586914,0.05456543,0.008079529,0.020614624,0.013641357,-0.008544922,-0.007965088,0.03741455,-0.008544922,-0.02482605,0.025283813,-0.042419434,-0.019454956,0.02558899,0.021224976,0.016647339,-0.035125732,0.00072956085,-0.016677856,-0.044525146,-0.0053482056,-0.0005617142,0.0024299622,0.0004477501,-0.0032691956,0.024536133,-0.0010967255,-0.017562866,-0.008644104,0.0024967194,-0.021652222,-0.0524292,-0.013916016,-0.019989014,0.013206482,-0.04638672,0.013076782,0.002746582,0.024291992,-0.025894165,0.0045814514,-0.0024414062,0.0042266846,0.02456665,0.009506226,0.0041999817,-0.008872986,-0.028747559,-0.022735596,-0.007850647,-0.00598526,0.036468506,-0.021530151,0.020431519,0.022903442,0.0014677048,-0.0073280334,0.0018615723,-0.0011634827,-0.007091522,-0.022247314,-0.009185791,0.015007019,0.015197754,0.012016296,-0.018539429,0.026412964,-0.013259888,-0.035614014,-0.0035972595,0.04522705,0.018692017,0.014297485,-0.009506226,0.011520386,-0.044158936,-0.00014483929,-0.009651184,0.010375977,0.01474762,-0.0008702278,-0.0005912781,0.014198303,0.013023376,-0.001786232,0.0000526309,0.032562256,0.011779785,0.0112838745,0.015945435,-0.0066108704,0.0064468384,-0.036895752,-0.029083252,0.0046195984,0.043701172,0.0121536255,0.012168884,-0.01991272,0.00014972687,-0.008163452,-0.0069122314,0.0027198792,-0.0030727386,-0.044555664,-0.012016296,-0.0069503784,0.027832031,0.015266418,0.002456665,-0.01889038,0.020767212,-0.018218994,-0.031555176,-0.02204895,0.046783447,0.013038635,-0.034118652,-0.012794495,0.007091522,0.0012025833,-0.02319336,-0.0026378632,-0.06488037,-0.01083374,-0.0064353943,-0.007949829,0.013084412,0.002462387,0.012046814,-0.007007599,0.005870819,-0.0006175041,0.018814087,0.018310547,-0.017501831,-0.012817383,0.020874023,0.013168335,0.0027580261,0.016326904,0.025466919,-0.00011444092,0.004135132,-0.009208679,-0.0037231445,-0.043304443,0.007972717,0.006164551,-0.010108948,0.028030396,-0.018539429,0.02746582,0.001906395,0.019866943,-0.014572144,0.0019817352,0.024642944,-0.032470703,-0.008255005,0.0055389404,-0.009750366,-0.035095215,0.011154175,0.019607544,0.0146484375,-0.020751953,0.04547119,-0.017150879,-0.010597229,0.013549805,0.016525269,-0.01878357,-0.00844574,0.022750854,-0.0022087097,-0.00415802,-0.002986908,-0.014968872,-0.009933472,-0.031173706,-0.009803772,-0.009353638,0.008880615,0.03439331,-0.009254456,0.043792725,0.007144928,0.012550354,0.025772095,0.007080078,0.024887085,0.0052719116,0.038269043,0.02458191,-0.017807007,0.015571594,-0.0049476624,-0.013267517,-0.00059080124,-0.005126953,0.023895264,-0.0047721863,0.0040397644,0.0053482056,0.012039185,0.019561768,0.018829346,0.00009030104,0.012519836,-0.056365967,-0.013092041,-0.02067566,-0.0033664703,0.030944824,0.023727417,0.012397766,-0.0059661865,-0.005580902,0.03262329,0.04071045,-0.01197052,-0.0073051453,-0.0010719299,0.008712769,-0.01473999,0.023803711,0.007167816,-0.027618408,-0.016021729,-0.006958008,-0.022750854,0.023666382,-0.0071754456,0.019058228,-0.004764557,-0.034088135,-0.042266846,0.008491516,-0.025161743,0.0017986298,0.013786316,-0.0021247864,0.025177002,0.00440979,-0.020553589,0.022659302,0.020355225,-0.030471802,0.02557373,0.03314209,0.0030078888,0.0034885406,0.008384705,-0.03555298,-0.010307312,0.0067443848,-0.010696411],"createdAt":"2026-04-18T18:52:19.420Z","updatedAt":"2026-04-28T18:34:28.662Z","lastSeenAt":"2026-04-28T18:34:28.662Z","tsv":"'/api/v1/portfolios/10/performance':42 '/request':12,24 '0.02':11,23,68,111 '000':72 '10':49 '20':71 '402':184 '6':76 'access':33,127 'actual':189 'ai/ml':100 'alon':201 'analyt':99 'api':96,118,141 'base':8,20,58,73 'broader':84 'call':95 'capabl':193 'challeng':186 'coin':63 'commit':126 'confirm':179 'connect':150 'contain':175 'content':156 'cost':66 'crawl':139 'data':3,15,32,45,98,103,190 'decim':77 'descript':168 'detail':167 'doc':140 'document':134 'endpoint':26,79,177,199 'entir':130 'exampl':164 'extrem':136 'finance/web3':102 'financial data API' 'gate':129 'infer':101,196 'investment performance' 'json':44 'json-response' 'key':119 'limit':122 'live':180 'lowpaymentfee.com':28,86 'metric':52 'micropay':6,18,133 'must':194 'network':9,21,59 'no-api-key' 'offer':88 'openapi':160 'page':145 'part':81 'path':200 'pay':93 'pay-per-cal':92 'pay-per-request' 'payment':37,53 'per':69,94,112 'perform':2,14,31,51,173 'platform':85,115 'portfolio':1,13,30,48,172 'portfolio analytics' 'portfolio returns' 'portfolio tracking' 'portfolio-performance' 'price':108,142 'prompt':152 'proper':183 'protocol':38 'provid':29 'rate':121 'readm':144 'relat':46 'request':70,113 'request/response':163 'requir':116 'resourc':41 'respons':174 'return':43,147,181 'schema':161,191 'servic':106 'settl':55 'span':97 'spars':137 'specif':40 'substant':155 'uniform':109 'unit':74 'upfront':125 'usd':62 'usdc':61 'usdc-base-network' 'use':60 'util':105 'varieti':90 'via':4,16,34 'wallet':151 'x402':5,17,36,132,185 'x402 finance API' 'x402-payment'","prices":[{"id":"ee6c45be-aff5-4ace-a645-5fcf50eaf884","listingId":"fc0236c7-29e6-4812-8b53-ddb038df3d70","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/10/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":"2026-04-18T18:52:19.420Z"}],"sources":[{"listingId":"fc0236c7-29e6-4812-8b53-ddb038df3d70","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/portfolios/10/performance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:52:19.420Z","lastSeenAt":"2026-04-28T18:34:28.662Z"}],"details":{"listingId":"fc0236c7-29e6-4812-8b53-ddb038df3d70","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/portfolios/10/performance \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/portfolios/10/performance"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/portfolios/10/performance"}],"useCases":["Retrieving performance metrics for a specific investment portfolio","Integrating portfolio performance data into automated trading or reporting agents","Paying per-call for financial data without subscription commitments"],"bestFor":["Agents needing on-demand portfolio performance data without API key management","Developers prototyping financial dashboards with low-cost pay-per-call access","x402-compatible clients on the Base network"],"notFor":["Users needing detailed API documentation or response schema guarantees before integration","Bulk historical portfolio data retrieval (no evidence of batch endpoints)","Non-crypto-native users who cannot settle payments on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:01.554Z"},"updatedAt":"2026-04-28T18:34:28.662Z"}}