{"id":"5cc5e818-4137-4472-9147-83ae0e201821","shortId":"DQzq4F","kind":"x402","title":"Portfolio holdings data via x402 micropayment on Base network, $0.02 per request.","tagline":"Portfolio holdings data via x402 micropayment on Base network, $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns portfolio holdings data for portfolio ID 6. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated behind the x402 payment protocol on the Base network.\n\nThe endpoint accepts POST requests and returns JSON. Payment is settled in USDC on Base (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) at a cost of $0.02 per request (maxAmountRequired of 20,000 base units with 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is paid individually via the X-PAYMENT header. The x402 challenge was confirmed live, returning a proper 402 response with version 1 of the protocol.\n\nDocumentation is extremely sparse. The landing page lists available endpoints and pricing, but the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the holdings response contains. The specific endpoint path suggests it returns holdings for a particular portfolio (ID 6), but the structure of the response and what input parameters (if any) the POST body expects are unknown.","tags":[],"capabilities":["x402-payment","usdc-base","portfolio-holdings","pay-per-request","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["portfolio holdings API","investment holdings","portfolio data","crypto portfolio","holdings endpoint","x402 finance API","Base network API"],"warnings":["No API documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content","No OpenAPI or schema describing request body or response format","The endpoint is hardcoded to portfolio ID 6; unclear if other portfolio IDs are available or what this portfolio represents","No information on error handling, response fields, or data freshness"],"endpointUrl":"https://lowpaymentfee.com/api/v1/portfolios/6/holdings","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/6/holdings","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 via a valid 402 x402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The purpose of the specific portfolio ID 6 endpoint is unclear, and input/output formats are entirely unknown.","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":"2026-04-19T08:51:21.607Z","embedding":[-0.01763916,-0.020980835,0.04348755,0.019134521,-0.0058898926,-0.032806396,-0.00036478043,0.02230835,0.06365967,-0.059051514,0.03262329,-0.05407715,-0.015281677,-0.079956055,-0.015586853,0.0031375885,0.01914978,0.006706238,-0.05255127,0.05166626,0.033447266,-0.012702942,-0.010009766,0.021057129,-0.01171875,0.004146576,-0.016220093,-0.012992859,-0.026489258,-0.033203125,0.04385376,-0.02468872,-0.005542755,0.036010742,-0.036102295,0.010772705,0.013771057,0.044067383,0.0181427,0.009002686,0.028930664,-0.05303955,0.018875122,-0.0096206665,-0.04486084,-0.010948181,0.037139893,-0.04043579,0.035583496,0.02381897,-0.03213501,-0.013786316,-0.0049324036,0.022018433,0.009864807,0.016693115,0.020553589,0.0019159317,-0.021499634,0.03164673,0.015457153,-0.056732178,0.0059432983,-0.009613037,0.019180298,0.042297363,-0.033813477,0.061157227,0.00026345253,0.07513428,0.012336731,0.040527344,0.013137817,0.011741638,-0.026779175,-0.024215698,-0.010597229,0.027496338,-0.0011110306,-0.04525757,-0.0046463013,-0.005760193,-0.05303955,-0.02583313,-0.034057617,-0.04989624,-0.010116577,0.0032730103,-0.060791016,0.039276123,-0.08123779,0.011375427,-0.007419586,0.0038261414,0.006958008,-0.055267334,0.00642395,0.021224976,-0.020965576,0.020507812,0.0036773682,-0.019515991,-0.020263672,0.0115737915,0.019424438,0.049987793,0.014625549,0.05102539,0.0041160583,-0.017410278,-0.0592041,0.003616333,0.005542755,0.019805908,0.004425049,-0.0075035095,-0.0309906,0.014045715,-0.026412964,0.021011353,-0.045715332,0.026657104,0.035980225,0.010002136,0.01826477,-0.030807495,-0.020339966,0.0056610107,-0.042175293,-0.025543213,0.023864746,0.015022278,0.008850098,-0.0069503784,-0.02243042,0.0055236816,-0.023147583,-0.027420044,-0.050689697,-0.021331787,0.028198242,-0.032165527,0.03955078,0.004432678,-0.09375,0.0134887695,-0.014427185,0.02809143,-0.0093688965,-0.009712219,0.013725281,0.026809692,-0.021484375,0.0057411194,0.0013532639,-0.032196045,-0.026824951,0.029327393,-0.0016946793,0.034454346,0.016098022,0.019760132,-0.015777588,0.010948181,0.030654907,0.031921387,0.0017766953,-0.05670166,-0.062438965,-0.04031372,0.016647339,-0.012916565,-0.012748718,0.003440857,-0.014793396,-0.06866455,0.0026874542,-0.011199951,-0.0030956268,-0.08026123,-0.0025787354,-0.047454834,0.024780273,-0.014831543,-0.06341553,0.011123657,-0.020935059,0.0592041,0.023071289,0.024932861,0.046142578,0.008277893,0.05606079,0.05355835,-0.0463562,-0.026748657,-0.0015439987,0.009140015,-0.008613586,-0.007598877,0.008781433,-0.0082092285,0.03302002,0.06323242,0.0042419434,-0.026123047,0.0040893555,-0.05618286,-0.05279541,-0.0015821457,0.028274536,-0.0054473877,-0.014137268,0.004924774,-0.017593384,-0.030227661,0.009765625,0.015701294,-0.009864807,0.058135986,0.015571594,0.04425049,0.036743164,-0.000040352345,-0.03274536,0.044708252,0.028442383,0.015319824,0.008865356,-0.068359375,0.023071289,0.01574707,-0.015670776,-0.0015382767,-0.009025574,0.005306244,-0.031829834,-0.009773254,0.0021514893,-0.008811951,-0.002861023,-0.028549194,-0.007297516,0.020736694,0.006752014,-0.011558533,-0.02670288,-0.0869751,0.019943237,0.0317688,0.043304443,-0.009819031,0.0067329407,-0.020477295,-0.01171875,-0.050354004,0.020217896,0.055145264,-0.025009155,-0.013198853,0.012390137,-0.019424438,-0.048706055,-0.0052604675,-0.022872925,-0.008239746,-0.022827148,-0.007259369,-0.056793213,0.0014829636,0.0127334595,0.04135132,0.02104187,-0.031204224,-0.061279297,-0.0004477501,-0.023284912,0.013206482,-0.042816162,-0.0073547363,0.021881104,0.029296875,0.0013046265,0.021469116,0.026931763,0.000259161,0.022979736,0.009841919,-0.0053253174,0.016799927,-0.0016555786,0.01247406,0.037353516,-0.0524292,0.019241333,-0.008079529,0.0413208,-0.030273438,0.03579712,0.0026416779,0.01889038,0.044006348,-0.014549255,-0.06964111,0.014160156,-0.014175415,0.025604248,0.03475952,-0.02571106,-0.018951416,-0.025558472,0.051239014,-0.02293396,0.0064048767,-0.004711151,0.028442383,0.044067383,-0.013122559,-0.046051025,-0.031341553,-0.022781372,-0.016494751,0.021362305,-0.010070801,0.025146484,-0.0077552795,0.010536194,-0.02255249,-0.004398346,-0.011650085,-0.0009059906,-0.023880005,-0.008621216,-0.015686035,0.0008778572,0.0031585693,0.0019044876,-0.0077171326,0.025222778,0.018005371,0.013137817,0.007865906,-0.02104187,-0.02470398,-0.025604248,-0.050598145,0.015899658,0.044433594,-0.0096588135,0.0146484375,-0.029907227,-0.01272583,0.011497498,0.014839172,0.040283203,-0.011192322,-0.018310547,-0.0574646,-0.079711914,-0.024856567,-0.024490356,0.019943237,0.025238037,0.0043411255,0.039154053,0.011238098,-0.019378662,-0.04989624,0.024536133,-0.05331421,0.017822266,0.03024292,-0.035003662,-0.028549194,0.0070343018,0.008995056,0.012481689,0.037384033,0.01902771,-0.013160706,0.049316406,0.0036296844,0.011993408,0.0022830963,0.030090332,0.012229919,-0.008628845,-0.003774643,-0.039093018,0.0020751953,0.012893677,0.0002810955,-0.027648926,-0.06903076,0.022598267,0.027938843,0.061676025,0.028198242,0.021438599,0.0027236938,-0.035003662,-0.008010864,-0.039520264,-0.02017212,-0.034820557,-0.05432129,0.015625,0.0087890625,0.006263733,-0.024429321,0.040924072,-0.022567749,0.019424438,-0.041412354,0.05859375,-0.017333984,-0.012023926,0.0014877319,0.007926941,0.04824829,0.053497314,-0.02670288,0.0289917,0.0023994446,-0.035858154,-0.00969696,0.0491333,-0.0256958,-0.015808105,-0.070739746,-0.039642334,0.015403748,0.0031089783,-0.005077362,0.002374649,-0.010536194,0.037872314,0.008232117,-0.031097412,-0.014854431,0.031204224,0.0016546249,-0.057556152,-0.013366699,-0.04321289,0.013580322,0.04650879,-0.012054443,-0.020065308,0.00623703,-0.01826477,-0.0010986328,0.033569336,0.024414062,0.013465881,-0.030395508,0.013969421,-0.0007715225,0.010467529,0.0071372986,0.03253174,0.0357666,0.016021729,0.05709839,0.019897461,-0.013969421,-0.060180664,-0.0039367676,-0.051574707,-0.007785797,0.04562378,-0.029251099,-0.0070228577,-0.03253174,-0.03137207,-0.008155823,0.008728027,-0.03213501,-0.032348633,0.024993896,-0.014259338,-0.036102295,-0.067993164,-0.037353516,0.02607727,0.08673096,0.016967773,0.0028018951,-0.032592773,-0.0021209717,0.01927185,-0.0019702911,0.019729614,-0.0146484375,-0.0058670044,-0.018585205,-0.020141602,-0.026519775,-0.0041656494,0.016937256,0.03149414,0.004470825,0.013282776,0.025009155,0.010978699,-0.0074005127,-0.023880005,0.008384705,-0.0026416779,0.016738892,-0.010009766,0.054748535,-0.013206482,-0.021850586,-0.052490234,0.035186768,0.0077400208,0.028884888,-0.033447266,-0.007549286,0.001162529,0.009109497,-0.013366699,-0.023086548,0.012962341,0.008201599,-0.051971436,-0.06274414,0.04675293,-0.016326904,0.0118637085,0.008674622,-0.02331543,0.019454956,-0.01096344,0.00868988,-0.000065624714,-0.0231781,-0.016937256,-0.03012085,-0.026779175,-0.04522705,-0.03552246,-0.031829834,0.039367676,-0.02027893,0.038879395,-0.0022468567,-0.029632568,0.032226562,0.025619507,0.022857666,0.01612854,-0.01965332,-0.0010919571,0.050231934,0.0069084167,-0.04925537,0.037353516,0.012916565,0.0069084167,0.018859863,0.042999268,0.018157959,-0.0020389557,0.017333984,0.00036001205,-0.0121536255,-0.028274536,-0.01838684,0.004600525,0.0055618286,-0.012542725,-0.044647217,0.036010742,0.026626587,-0.04901123,-0.036834717,0.029525757,0.0017728806,-0.021759033,0.022277832,0.010169983,0.056854248,-0.030197144,0.022369385,0.0048561096,0.03540039,0.028274536,0.00000756979,-0.011009216,0.00006181002,-0.020812988,-0.00010061264,0.028762817,-0.016098022,0.023727417,0.0014371872,0.039154053,0.0008778572,-0.006462097,-0.01826477,-0.017990112,0.0024318695,-0.021438599,-0.026779175,0.042388916,0.00035357475,0.017501831,0.009712219,0.025009155,0.046417236,-0.0012950897,-0.00617218,-0.013580322,0.03933716,0.008575439,0.008522034,-0.0038070679,-0.0042304993,0.037963867,-0.04623413,-0.004573822,0.026000977,0.009475708,-0.015609741,-0.037353516,-0.021850586,0.0070228577,0.037017822,0.015396118,-0.0027217865,0.0018281937,-0.0026836395,-0.02519226,-0.005569458,0.0010709763,-0.0004119873,-0.033111572,-0.054626465,0.006072998,0.010902405,0.013053894,-0.012992859,0.021713257,-0.026519775,-0.004142761,0.006072998,-0.04043579,0.005519867,0.0025234222,-0.0019044876,0.012687683,-0.02104187,0.01259613,-0.025405884,-0.054534912,0.009712219,0.00749588,0.07489014,-0.044799805,0.00667572,0.0015611649,-0.015602112,0.0052719116,0.0072746277,0.006374359,0.044128418,0.020523071,0.04333496,-0.037506104,0.043823242,-0.024124146,0.013710022,-0.0030174255,-0.043762207,-0.0061531067,0.0018167496,-0.0052757263,0.04574585,-0.021026611,0.0016107559,-0.040222168,-0.040100098,-0.006134033,-0.043151855,0.034851074,0.024612427,0.044921875,-0.016540527,0.0030727386,0.01525116,0.0154418945,-0.006500244,-0.03289795,-0.011360168,0.01309967,0.012107849,0.02192688,-0.026550293,-0.014289856,-0.006931305,0.010566711,-0.034057617,-0.03086853,0.0001527071,-0.015571594,-0.00014317036,0.026367188,-0.01876831,-0.02494812,-0.0016546249,-0.044921875,-0.008155823,-0.0079193115,0.013031006,0.016830444,-0.011711121,-0.014030457,0.02696228,-0.016723633,0.023849487,-0.008392334,-0.01651001,-0.048706055,-0.012809753,0.012489319,0.029937744,0.012916565,-0.0154953,-0.010360718,-0.016433716,-0.059265137,-0.0022602081,0.0181427,-0.0006752014,0.0033855438,-0.008422852,-0.029251099,0.015319824,-0.029067993,-0.022277832,-0.0065460205,-0.009544373,0.015060425,-0.0033721924,0.024597168,0.04425049,-0.016921997,-0.018478394,-0.0044288635,0.009544373,0.012390137,0.04119873,0.03842163,-0.020874023,-0.031219482,0.008460999,0.003829956,0.00018513203,-0.038482666,0.00440979,-0.013450623,0.016998291,-0.0041007996,0.01940918,-0.019760132,0.019134521,0.054107666,0.00086021423,0.009315491,-0.0013008118,-0.012046814,0.024414062,0.049316406,-0.035461426,0.004058838,-0.04107666,0.017822266,-0.03555298,0.032440186,0.0062065125,0.03366089,-0.009437561,-0.010787964,0.0064201355,-0.002708435,-0.0010957718,-0.039489746,-0.029373169,-0.06842041,-0.007007599,-0.016647339,-0.029342651,0.012184143,0.009651184,-0.029266357,-0.074035645,0.00017952919,0.060638428,-0.004722595,-0.008255005,-0.00007671118,0.03286743,0.021408081,-0.037719727,-0.015037537,0.002571106,-0.03652954,-0.00016212463,-0.042785645,0.029937744,-0.021713257,0.0013484955,0.014984131,-0.000487566,0.026031494,-0.00012636185,0.026107788,-0.005153656,0.01210022,-0.027236938,-0.003835678,-0.014907837,-0.03250122,0.05142212,-0.044433594,0.028930664,0.044006348,0.019927979,0.013206482,0.0031108856,0.028274536,-0.026672363,-0.0034885406,0.01928711,0.025543213,0.027572632,-0.012840271,0.010192871,0.0098724365,0.00756073,-0.017425537,-0.0072402954,-0.007575989,-0.025604248,-0.014381409,0.030273438,-0.014015198,-0.010910034,-0.001572609,0.01033783,0.011985779,0.0073890686,0.013572693,-0.024414062,-0.009498596,-0.02520752,0.0008711815,0.010643005,0.010932922,-0.021194458,0.027297974,0.009788513,0.009475708,-0.0066490173,0.012359619,0.005809784,0.050476074,-0.0004684925,-0.00035834312,0.009017944,0.017089844,0.035736084,-0.018692017,0.019256592,-0.051239014,-0.0065841675,-0.008377075,0.012214661,-0.0017318726,-0.036499023,0.0069885254,-0.022216797,0.009963989,-0.011451721,-0.04763794,-0.013374329,-0.010467529,-0.02909851,-0.00881958,-0.005432129,-0.0010471344,0.009849548,0.0030612946,-0.0047721863,-0.018371582,0.01763916,-0.0059509277,0.0065727234,0.03555298,0.029037476,-0.005203247,-0.026519775,-0.00970459,-0.005050659,-0.026443481,0.0051612854,-0.013206482,-0.01361084,0.0234375,0.026321411,-0.005191803,0.0013046265,0.030960083,-0.014343262,0.0063934326,0.019958496,0.032043457,-0.020263672,0.011222839,-0.029418945,0.0158844,0.004016876,0.021606445,0.00050735474,-0.013122559,0.0026931763,0.03289795,0.028274536,-0.0055770874,0.03466797,0.011398315,0.038330078,-0.009719849,-0.017150879,-0.022079468,-0.016021729,-0.019973755,-0.0035438538,0.0073127747,0.0018262863,0.018997192,-0.015716553,0.0152282715,-0.04244995,0.010192871,0.022903442,0.02696228,-0.038848877,-0.039520264,-0.016479492,-0.0019741058,-0.050689697,0.015533447,0.0061416626,0.04486084,0.019897461,0.031051636,0.010566711,0.01109314,0.012313843,-0.025100708,-0.021499634,-0.008583069,-0.010925293,0.016403198,-0.0057373047,0.038146973,0.043548584,0.012748718,0.029296875,0.016906738,0.013969421,0.0032081604,0.014839172,-0.015853882,0.022338867,-0.01108551,0.013618469,0.010414124,0.038848877,-0.026519775,0.02041626,0.0056762695,0.034301758,-0.038970947,0.020980835,0.080444336,0.021850586,-0.010856628,0.06341553,-0.019683838,-0.022705078,-0.006500244,-0.012718201,0.050933838,0.0066566467,0.030227661,0.044067383,0.0070991516,0.0028457642,0.0077400208,-0.021575928,-0.027496338,0.046051025,0.033233643,-0.0047340393,-0.009895325,-0.009857178,0.019821167,-0.034484863,-0.03515625,0.010856628,-0.0014009476,0.008613586,0.005126953,-0.002298355,-0.0090789795,-0.0095825195,0.034057617,0.00012743473,-0.01751709,0.04067993,0.021057129,-0.020965576,0.026397705,0.00027179718,0.021743774,-0.009140015,-0.016296387,0.015548706,0.016830444,0.01108551,-0.024673462,0.016693115,-0.004009247,0.025878906,0.039794922,-0.018600464,0.012634277,0.021102905,-0.008628845,0.001537323,0.036712646,0.019561768,0.0047912598,0.0390625,0.03164673,0.02078247,-0.0340271,0.009628296,0.0031166077,0.019577026,-0.016937256,-0.008605957,0.0069465637,-0.028808594,0.020385742,0.005748749,-0.026153564,0.039154053,0.02078247,-0.010124207,-0.0010852814,-0.011062622,0.01977539,-0.025115967,-0.025665283,-0.014122009,-0.0024681091,0.02381897,0.03768921,0.039215088,-0.010284424,0.0413208,0.025344849,-0.005340576,-0.0127334595,0.015403748,-0.03262329,-0.019577026,-0.010398865,-0.023422241,-0.045440674,0.025878906,0.0067443848,0.018753052,0.022918701,-0.0023555756,-0.0061149597,-0.0049324036,0.023269653,0.012748718,-0.010658264,0.010093689,-0.0049324036,0.0006546974,0.037841797,-0.0038204193,-0.0003182888,-0.015083313,0.0031394958,0.016418457,-0.007381439,-0.01133728,-0.0105896,0.0027713776,-0.036132812,0.010276794,0.033355713,0.005458832,0.06008911,-0.008743286,-0.025390625,0.0028953552,0.033447266,0.004989624,0.0046920776,-0.022094727,0.012763977,-0.035888672,0.03466797,0.03314209,0.0040359497,0.008735657,-0.0012769699,-0.026046753,0.0005431175,-0.0043525696,0.008415222,-0.02670288,-0.012367249,0.0027542114,0.025161743,-0.023544312,-0.03149414,-0.008132935,-0.009963989,-0.016540527,-0.02659607,0.015640259,0.008338928,0.024093628,0.019302368,0.02558899,-0.03390503,0.059417725,-0.014778137,0.033477783,-0.023071289,-0.0045928955,0.04776001,0.020187378,0.04449463,-0.002281189,-0.0022773743,-0.022338867,-0.00034236908,0.021743774,0.019515991,0.02027893,-0.0034217834,-0.013687134,0.03164673,0.0021877289,0.016326904,0.011192322,-0.0003015995,0.0063285828,-0.016098022,-0.013336182,-0.005012512,-0.0065193176,0.011741638,0.013542175,-0.011360168,0.018432617,-0.021621704,-0.0013942719,0.022338867,0.006919861,-0.001074791,-0.0037136078,-0.015060425,0.028198242,-0.027160645,-0.027832031,-0.008811951,0.0075035095,-0.066833496,-0.019226074,0.007472992,0.013168335,-0.024429321,0.060760498,0.011909485,-0.008979797,0.011108398,0.022491455,-0.0008673668,0.033477783,-0.008369446,0.04034424,0.051330566,0.025039673,-0.0011806488,0.03869629,0.01272583,-0.016464233,0.025253296,0.04977417,0.0028648376,0.033599854,0.0034503937,-0.007472992,0.015327454,-0.0007286072,-0.015174866,0.0018024445,-0.01486969,-0.016738892,0.0020599365,0.028213501,-0.010665894,-0.014892578,-0.006126404,-0.005344391,0.002357483,0.03579712,0.020065308,-0.035308838,0.02520752,-0.0070495605,-0.0035648346,-0.0044784546,0.004272461,0.009254456,-0.042510986,-0.0035037994,0.022827148,-0.00793457,0.037261963,-0.022720337,-0.017959595,0.03857422,0.026046753,0.021575928,0.014404297,0.0032100677,0.017059326,-0.0051231384,0.002872467,-0.010231018,-0.005874634,0.016860962,0.0027217865,0.014816284,-0.008964539,0.024124146,-0.011260986,0.002708435,0.0017490387,0.0070152283,0.013450623,-0.016937256,0.00003784895,0.0154418945,0.030685425,-0.020553589,-0.025878906,-0.005947113,0.019317627,0.07489014,0.0066566467,0.0075302124,0.018554688,0.030090332,0.01889038,0.049743652,0.010093689,0.023880005,0.0064811707,-0.014312744,-0.012763977,0.033599854,-0.0009293556,-0.030715942,0.028762817,-0.040924072,-0.021591187,0.025802612,0.017684937,0.0077819824,-0.045684814,-0.008811951,-0.0064811707,-0.041229248,-0.0154953,-0.013504028,0.00002002716,-0.0017700195,-0.000059962273,0.02168274,0.0037784576,-0.020950317,-0.014945984,0.0045928955,-0.02468872,-0.06536865,-0.005039215,-0.019760132,0.013450623,-0.020385742,0.0022888184,-0.0017271042,0.015625,-0.014274597,-0.00680542,-0.012123108,0.018753052,0.027008057,0.011817932,0.010658264,-0.01689148,-0.02998352,-0.018600464,-0.0072288513,-0.00006657839,0.037506104,-0.018692017,0.013595581,0.037017822,0.0039863586,-0.0045433044,-0.00051164627,0.002948761,-0.009521484,-0.006401062,-0.014404297,0.012084961,0.019699097,-0.0038642883,-0.013893127,0.03466797,-0.018798828,-0.029754639,-0.0010175705,0.056121826,0.02230835,0.018615723,0.009124756,-0.01184082,-0.054382324,0.008628845,-0.020874023,0.011108398,0.018997192,-0.015602112,0.0040397644,0.028930664,0.016296387,-0.0020580292,0.0008096695,0.046051025,0.024429321,0.012611389,0.014839172,-0.00051641464,0.013023376,-0.040649414,-0.025421143,0.007671356,0.032073975,0.01399231,0.0058174133,-0.01776123,-0.0029182434,-0.019119263,0.0057258606,0.018676758,-0.025756836,-0.057037354,-0.015357971,-0.021102905,0.030319214,0.010124207,0.015991211,-0.030273438,0.012565613,-0.015213013,-0.027053833,-0.025878906,0.039978027,0.010520935,-0.019363403,-0.0051460266,0.031433105,-0.009361267,-0.027648926,-0.004283905,-0.055511475,-0.021835327,-0.022659302,-0.006187439,0.021774292,0.000097095966,0.012214661,-0.007194519,-0.0035591125,-0.0035533905,0.03213501,0.020233154,-0.014030457,-0.016937256,0.01751709,0.014305115,0.0012683868,0.006881714,0.0059013367,-0.008964539,0.0020656586,-0.002363205,-0.0014467239,-0.028839111,0.026885986,0.016464233,-0.0046577454,0.018966675,-0.016677856,0.032714844,0.0026493073,0.01852417,-0.026016235,-0.008300781,0.031829834,-0.01991272,-0.016601562,-0.0090789795,0.0063934326,-0.017623901,0.008201599,0.013328552,0.030456543,-0.039031982,0.035247803,-0.016448975,-0.034240723,0.01838684,0.01096344,-0.0362854,-0.00299263,0.024612427,0.0023078918,-0.008132935,-0.009307861,-0.014877319,-0.029937744,-0.021270752,-0.013877869,-0.010635376,-0.0016994476,0.026550293,0.004600525,0.05142212,0.014427185,0.0141067505,0.024627686,0.014350891,0.025375366,0.006313324,0.048858643,0.019699097,-0.015136719,0.016601562,-0.0046195984,-0.015327454,0.0008072853,-0.009025574,0.019302368,-0.01259613,-0.0033569336,-0.008605957,0.009162903,0.014625549,0.012161255,-0.011474609,0.009887695,-0.043640137,-0.002500534,-0.018997192,0.0023345947,0.030349731,0.022827148,0.00032877922,-0.0057525635,-0.014045715,0.03326416,0.03994751,-0.018508911,-0.018737793,-0.013687134,0.019699097,-0.013244629,0.02973938,0.005710602,-0.013092041,-0.015045166,-0.015304565,-0.021194458,0.012496948,-0.03314209,0.014877319,0.007183075,-0.01802063,-0.016540527,0.025390625,-0.004386902,0.0075416565,0.022521973,0.00008147955,0.021636963,0.015319824,-0.025177002,0.022827148,0.020828247,-0.030807495,0.046966553,0.032104492,-0.002653122,0.00021076202,-0.011497498,-0.03869629,-0.02128601,-0.0063438416,-0.012489319],"createdAt":"2026-04-18T18:53:12.753Z","updatedAt":"2026-04-27T20:08:58.465Z","lastSeenAt":"2026-04-27T20:08:58.465Z","tsv":"'/api':163 '/docs':161 '/pricing':162 '/readme':165 '0.02':10,22,95 '000':101 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':90 '1':143 '20':100 '402':139 '6':36,105,209 'Base network API' 'accept':76 'ai/ml':56 'analyt':55 'api':51,110 'avail':155 'base':8,20,72,88,102 'behind':65 'bodi':224 'broader':42 'call':50,120 'challeng':132 'commit':118 'confirm':134 'connect':171 'contain':195 'content':177 'contract':89 'cost':93 'crypto portfolio' 'data':3,15,32,54,59 'decim':106 'descript':188 'document':147 'dozen':45 'endpoint':26,52,75,156,198 'exampl':185 'expect':225 'extrem':149 'field':191 'finance/web3':58 'gate':64 'header':129 'hold':2,14,31,193,203 'holdings endpoint' 'id':35,208 'individu':123 'infer':57 'input':218 'investment holdings' 'json':81 'json-response' 'key':111 'land':152 'limit':114 'list':154 'live':135 'lowpaymentfee.com':28 'maxamountrequir':98 'micropay':6,18 'network':9,21,73 'no-api-key' 'offer':44 'openapi':181 'page':153,166 'paid':122 'paramet':219 'part':39 'particular':206 'path':199 'pay':48 'pay-per-cal':47 'pay-per-request' 'payment':68,82,128 'per':11,23,49,96 'platform':43 'portfolio':1,13,30,34,207 'portfolio data' 'portfolio holdings API' 'portfolio-holdings' 'post':77,223 'price':158 'prompt':173 'proper':138 'protocol':69,146 'rate':113 'render':168 'request':12,24,78,97 'request/response':184 'respons':140,194,215 'return':29,80,136,202 'schema':182 'servic':62 'settl':84 'span':53 'spars':150 'specif':197 'structur':212 'subscript':117 'suggest':200 'unit':103 'unknown':227 'usdc':86 'usdc-base' 'util':61 'version':142 'via':4,16,124 'wallet':172 'x':127 'x-payment':126 'x402':5,17,67,131 'x402 finance API' 'x402-payment'","prices":[{"id":"adddc274-46b2-4a0d-905e-f793d9a71172","listingId":"5cc5e818-4137-4472-9147-83ae0e201821","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/6/holdings","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:53:12.753Z"}],"sources":[{"listingId":"5cc5e818-4137-4472-9147-83ae0e201821","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/portfolios/6/holdings","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:53:12.753Z","lastSeenAt":"2026-04-27T20:08:58.465Z"}],"details":{"listingId":"5cc5e818-4137-4472-9147-83ae0e201821","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/portfolios/6/holdings \\\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 402 with x402 challenge, maxAmountRequired 20000 in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/portfolios/6/holdings"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/portfolios/6/holdings"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no additional content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving portfolio holdings data programmatically with per-request micropayments","Integrating portfolio data into trading bots or dashboards without subscription overhead","Agent-driven portfolio analysis where each data fetch is paid on-demand"],"bestFor":["Developers wanting keyless, pay-per-call access to portfolio data","AI agents that need on-demand financial data with crypto micropayments","Low-volume or sporadic consumers who don't want subscription commitments"],"notFor":["High-frequency consumers needing bulk data at lower per-unit cost","Users without a Base network wallet or USDC balance","Anyone needing detailed API documentation or guaranteed SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:59.029Z"},"updatedAt":"2026-04-27T20:08:58.465Z"}}