{"id":"a0f336fb-1ac1-4c3a-b2dd-852ae2710f4f","shortId":"Vm5bn6","kind":"x402","title":"Retrieve portfolio holdings via x402 micropayment on Base for $0.02 per request.","tagline":"Retrieve portfolio holdings via x402 micropayment on Base for $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns holdings data for portfolio ID 11. It is part of a broader suite of x402-enabled APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform share a uniform $0.02-per-request pricing model settled in USDC on the Base network via the x402 protocol.\n\nThe specific endpoint `/api/v1/portfolios/11/holdings` accepts POST requests and returns JSON. The x402 challenge confirms it is live, requiring a maximum payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, 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 or what parameters the POST body accepts. The endpoint's purpose — portfolio holdings — is inferred solely from the URL path and the generic \"Premium API Access\" description. Users should expect a finance-related JSON response but will need to experiment to discover the exact schema.","tags":[],"capabilities":["x402-payment","usdc-base","portfolio-holdings","json-api","micropayment","per-request-billing"],"categories":["finance"],"synonyms":["portfolio holdings API","investment holdings","x402 finance API","crypto portfolio","lowpaymentfee","USDC micropayment API","Base network API","portfolio data"],"warnings":["No API documentation available — docs, pricing, and README pages all render only 'Connect wallet'","No OpenAPI or JSON schema for request or response bodies","The specific data returned by the holdings endpoint is unknown — portfolio 11 is hardcoded in the URL with no explanation","No information on what POST body parameters are accepted"],"endpointUrl":"https://lowpaymentfee.com/api/v1/portfolios/11/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/11/holdings","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming pricing and network. However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The actual data returned and required POST body are completely unknown, making this effectively a stub listing.","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":"2026-04-19T08:22:58.869Z","embedding":[-0.027511597,-0.016540527,0.048217773,0.016235352,-0.007583618,-0.020248413,-0.020874023,0.021118164,0.07183838,-0.056030273,0.028640747,-0.05404663,-0.017074585,-0.05480957,0.007461548,0.00061416626,0.016143799,-0.002796173,-0.05429077,0.0597229,0.038085938,-0.021026611,0.00077342987,0.026763916,-0.015281677,0.00047254562,-0.020233154,-0.0073890686,-0.02507019,-0.021987915,0.0256958,-0.021987915,-0.00034070015,0.035217285,-0.04324341,0.012687683,0.0022087097,0.03591919,0.025619507,0.008003235,0.021835327,-0.041107178,0.0362854,-0.017593384,-0.036132812,-0.009117126,0.047943115,-0.04840088,0.0236969,0.025283813,-0.040924072,-0.0058631897,-0.0138549805,0.022033691,0.020629883,0.017837524,0.028686523,0.0052261353,-0.019714355,0.033355713,0.0033454895,-0.045959473,0.014816284,0.0022945404,0.01676941,0.051849365,-0.034118652,0.06518555,0.011680603,0.06713867,0.013137817,0.04714966,0.018234253,0.0068130493,-0.021530151,-0.028427124,-0.012992859,0.03353882,-0.002418518,-0.039367676,-0.0075302124,-0.008049011,-0.06311035,-0.018722534,-0.03894043,-0.047851562,-0.0024204254,0.014007568,-0.062683105,0.024368286,-0.080322266,0.011726379,0.0036201477,0.006340027,0.004245758,-0.05505371,-0.0010604858,0.015083313,-0.020263672,0.024017334,0.022323608,-0.038330078,-0.014045715,0.009498596,0.021270752,0.055114746,0.0068588257,0.040374756,0.0011148453,-0.0072669983,-0.0625,-0.007663727,-0.0046424866,0.030975342,0.012557983,-0.016113281,-0.036346436,0.021759033,-0.029403687,0.019165039,-0.045166016,0.026641846,0.02532959,0.00078487396,0.020339966,-0.030883789,-0.020889282,0.0074653625,-0.03515625,-0.0287323,0.022369385,0.02168274,0.019744873,-0.016357422,-0.013282776,-0.005138397,-0.025985718,-0.021514893,-0.038635254,-0.010505676,0.024429321,-0.04638672,0.022232056,0.0034446716,-0.09063721,0.018844604,-0.014480591,0.022399902,0.001452446,-0.015899658,0.0115737915,0.014984131,-0.017028809,0.0036411285,-0.0051193237,-0.042419434,-0.034210205,0.017745972,-0.0058021545,0.024734497,0.0027484894,0.0345459,-0.020690918,0.0069465637,0.031280518,0.03970337,-0.0030574799,-0.060760498,-0.067871094,-0.038726807,0.019042969,-0.012207031,-0.020828247,-0.028717041,-0.015396118,-0.064697266,-0.0003683567,-0.020950317,-0.000521183,-0.06323242,-0.00019907951,-0.041778564,0.032318115,-0.008735657,-0.060455322,0.011367798,-0.026916504,0.05255127,0.015060425,0.015792847,0.037872314,0.0052986145,0.04421997,0.053985596,-0.027526855,-0.021270752,-0.008071899,0.008651733,0.008987427,0.00002515316,0.0025043488,-0.012138367,0.031463623,0.06439209,-0.0024490356,-0.012184143,0.014968872,-0.041656494,-0.0340271,0.0016918182,0.023468018,0.0058135986,-0.027664185,0.0053253174,-0.012718201,-0.02368164,0.0069732666,0.018737793,-0.0073394775,0.040100098,0.008148193,0.030044556,0.0368042,0.009124756,-0.028839111,0.04763794,0.027938843,0.011016846,0.02532959,-0.050811768,0.027359009,0.014152527,-0.024856567,-0.0022296906,-0.0044784546,0.025772095,-0.03112793,-0.0050201416,0.009613037,-0.0036373138,-0.0019321442,-0.026489258,-0.00022494793,0.020080566,0.01335907,-0.009628296,-0.03756714,-0.07849121,0.030685425,0.027328491,0.041107178,-0.0124435425,-0.011299133,-0.00919342,-0.010498047,-0.034362793,0.010978699,0.06097412,-0.03024292,-0.014282227,0.01739502,-0.024475098,-0.03805542,-0.011802673,-0.0067863464,-0.014328003,-0.025650024,-0.012176514,-0.06750488,0.0015306473,-0.004108429,0.03967285,0.01374054,-0.029403687,-0.05984497,0.0044555664,-0.02407837,0.014122009,-0.058898926,0.0072631836,0.023956299,0.030563354,-0.0024757385,0.020233154,0.029174805,-0.003271103,0.030349731,0.0038394928,-0.0007147789,0.0049438477,-0.011581421,0.008026123,0.035308838,-0.057617188,0.013923645,-0.0028190613,0.038116455,-0.03942871,0.046905518,-0.0045318604,0.022079468,0.03970337,-0.007843018,-0.0748291,0.017303467,-0.01701355,0.020599365,0.035827637,-0.02406311,-0.013435364,-0.024002075,0.0513916,-0.034698486,0.0036010742,0.006134033,0.030563354,0.032989502,-0.020812988,-0.03277588,-0.030456543,-0.009086609,-0.025924683,0.025283813,0.00017869473,0.025039673,-0.009117126,0.017608643,-0.040649414,-0.016708374,-0.023284912,-0.004875183,-0.010826111,-0.010574341,-0.0026855469,-0.019714355,0.0030136108,-0.0020484924,-0.0051994324,0.0287323,0.018661499,0.017990112,-0.0017337799,-0.030426025,-0.024291992,-0.01625061,-0.032104492,0.0234375,0.049713135,-0.0126953125,0.016784668,-0.018371582,-0.0020809174,0.026153564,-0.0038223267,0.027023315,0.0039024353,-0.009384155,-0.05215454,-0.08691406,-0.023834229,-0.033233643,0.018707275,0.022766113,0.0063819885,0.049194336,0.020629883,-0.011802673,-0.051513672,0.028015137,-0.048065186,0.020492554,0.024276733,-0.023208618,-0.028839111,-0.0017175674,0.02029419,0.0029468536,0.025146484,0.015609741,-0.0013456345,0.031799316,-0.002796173,0.00680542,0.0012741089,0.02116394,0.009376526,-0.011436462,-0.008026123,-0.04168701,0.017929077,0.008110046,0.001613617,-0.021270752,-0.07348633,0.02166748,0.02470398,0.062408447,0.03173828,0.023269653,0.001452446,-0.045532227,-0.024887085,-0.049713135,-0.017990112,-0.03765869,-0.047210693,0.009643555,0.0044555664,0.0109939575,-0.025680542,0.030273438,-0.018249512,0.013008118,-0.036987305,0.060180664,-0.009254456,-0.016036987,0.00283432,0.014160156,0.039215088,0.035491943,-0.032592773,0.03591919,0.011138916,-0.035736084,-0.009605408,0.050720215,-0.027923584,-0.00831604,-0.06378174,-0.04067993,0.0037212372,-0.013870239,0.00178051,-0.0082473755,-0.014076233,0.040863037,-0.00043058395,-0.029556274,-0.0152282715,0.038208008,0.00077724457,-0.059173584,-0.019989014,-0.04220581,0.021026611,0.03805542,-0.013153076,-0.020004272,0.0032901764,-0.02003479,-0.0040245056,0.017501831,0.025100708,0.009666443,-0.024719238,0.02166748,-0.016708374,0.0038452148,0.00440979,0.028121948,0.041259766,0.0044174194,0.056549072,0.022766113,-0.004463196,-0.057617188,-0.0038223267,-0.06298828,-0.010803223,0.048583984,-0.01977539,-0.014251709,-0.021194458,-0.024856567,-0.0026741028,0.0064888,-0.03250122,-0.028717041,0.01499939,-0.021270752,-0.036193848,-0.07800293,-0.030410767,0.015625,0.09362793,0.0345459,0.0050582886,-0.030975342,-0.012817383,0.01638794,-0.0032749176,0.011222839,-0.014251709,-0.015609741,-0.012016296,-0.027862549,-0.024490356,-0.016281128,0.021835327,0.031982422,0.012214661,0.011367798,0.028915405,0.0053977966,-0.016830444,-0.02128601,0.007217407,-0.011306763,0.024734497,-0.011192322,0.05706787,-0.010238647,-0.022781372,-0.034332275,0.026992798,0.0055770874,0.041168213,-0.03967285,-0.018737793,0.010292053,0.020858765,-0.009384155,-0.028427124,0.012496948,0.013702393,-0.05609131,-0.06768799,0.045715332,-0.021835327,0.013252258,0.011779785,-0.017074585,0.012237549,-0.019821167,0.018447876,-0.0045700073,-0.020507812,-0.027374268,-0.024230957,-0.026306152,-0.03265381,-0.03503418,-0.026565552,0.027404785,-0.02154541,0.034576416,-0.01360321,-0.024261475,0.030014038,0.035858154,0.021850586,0.011352539,-0.009597778,0.0039596558,0.041259766,0.018951416,-0.053527832,0.04159546,0.0059013367,0.008132935,0.020385742,0.04800415,0.0121154785,-0.004337311,0.011756897,-0.005138397,-0.018203735,-0.03164673,-0.024520874,0.008483887,0.0028858185,-0.015731812,-0.05078125,0.036468506,0.036376953,-0.05682373,-0.045654297,0.03643799,0.011039734,-0.029785156,0.01902771,0.010124207,0.050994873,-0.02104187,0.02760315,0.0024089813,0.03945923,0.0287323,-0.003768921,-0.014419556,-0.001288414,-0.013038635,0.0038204193,0.011077881,-0.009513855,0.024612427,0.016662598,0.03616333,-0.011253357,-0.012428284,-0.03552246,-0.02279663,0.016433716,-0.016708374,-0.02796936,0.03555298,-0.0060577393,0.025314331,0.0046424866,0.018310547,0.03604126,-0.005218506,-0.011787415,-0.01499939,0.041748047,0.0005569458,0.0030288696,-0.0013084412,-0.014190674,0.018188477,-0.051696777,0.00023210049,0.030349731,0.011657715,-0.008392334,-0.0395813,-0.031799316,0.009674072,0.026321411,0.029251099,-0.0012779236,-0.00041937828,-0.007472992,-0.02645874,-0.013626099,0.0030326843,0.014419556,-0.041259766,-0.05633545,0.01096344,0.018936157,0.012229919,-0.017211914,0.030838013,-0.02458191,0.0028591156,0.009788513,-0.05368042,0.0022678375,-0.007381439,0.005607605,0.005420685,-0.013267517,0.017578125,-0.02645874,-0.049591064,0.016479492,0.0009832382,0.068725586,-0.03967285,0.0053367615,0.0035381317,-0.00573349,0.003030777,0.00013065338,0.009185791,0.03527832,0.014625549,0.04498291,-0.028503418,0.034851074,-0.017913818,0.018753052,-0.0016222,-0.043548584,0.0054855347,-0.00504303,0.0044784546,0.047698975,-0.018722534,0.004425049,-0.036224365,-0.04949951,-0.0028018951,-0.03894043,0.030975342,0.017227173,0.060028076,-0.026504517,0.0019779205,0.020690918,0.020477295,0.0055885315,-0.029769897,-0.014907837,0.013961792,0.0074806213,0.025253296,-0.026763916,-0.00080013275,-0.008956909,0.0060768127,-0.03845215,-0.027679443,0.0029945374,-0.012680054,-0.0017366409,0.029174805,-0.022155762,-0.012313843,0.00680542,-0.03665161,-0.008964539,-0.007030487,0.020217896,0.017166138,-0.016311646,-0.0107803345,0.028381348,-0.012878418,0.016311646,-0.0021305084,-0.026321411,-0.05154419,-0.014762878,0.004032135,0.03201294,0.01828003,-0.015777588,-0.00605011,-0.016067505,-0.053588867,0.001666069,0.012924194,0.008590698,0.0039367676,-0.011154175,-0.026428223,0.010688782,-0.035980225,-0.023925781,0.0012187958,-0.014602661,-0.0006723404,-0.003490448,0.01838684,0.043823242,-0.008636475,-0.020462036,-0.016098022,0.009780884,0.021591187,0.03250122,0.038482666,-0.026351929,-0.03314209,-0.0062217712,-0.0003426075,-0.0043525696,-0.036193848,0.021896362,-0.019821167,0.015151978,-0.005203247,0.024627686,-0.013198853,0.02154541,0.052246094,0.0011301041,0.0017175674,-0.0049362183,-0.018630981,0.024093628,0.036315918,-0.027282715,-0.000025510788,-0.042236328,0.019714355,-0.027511597,0.026031494,0.004524231,0.035491943,-0.021987915,-0.014854431,0.004962921,-0.005832672,0.002023697,-0.046783447,-0.023544312,-0.056854248,-0.019515991,-0.009796143,-0.03390503,0.017990112,0.017608643,-0.021728516,-0.070251465,0.00806427,0.052612305,-0.017700195,0.00081682205,0.016036987,0.030914307,0.027252197,-0.032104492,-0.009994507,-0.016326904,-0.03955078,0.00016498566,-0.046875,0.027816772,-0.015457153,-0.00919342,0.018127441,-0.004245758,0.022064209,-0.0038070679,0.0345459,-0.0027751923,0.0088272095,-0.020370483,0.00060272217,-0.01473999,-0.027770996,0.053131104,-0.041931152,0.022857666,0.038330078,0.019714355,-0.0020961761,0.010566711,0.024795532,-0.034362793,0.013458252,0.01914978,0.031799316,0.02255249,0.0005965233,0.016983032,0.021057129,0.011184692,-0.015022278,-0.0018157959,-0.010795593,-0.018707275,-0.003255844,0.034454346,-0.0034217834,-0.0011463165,0.00034499168,0.014755249,0.0017700195,0.017913818,0.016860962,-0.020385742,-0.0006122589,-0.019851685,-0.004009247,0.003118515,0.0046958923,-0.019485474,0.027404785,0.0007033348,0.019348145,-0.008674622,0.016998291,0.01222229,0.038909912,-0.011054993,0.0043640137,0.014122009,0.007621765,0.034057617,-0.008903503,0.0259552,-0.047332764,-0.004798889,-0.005466461,0.022354126,0.0013914108,-0.02947998,0.014328003,-0.009849548,-0.0010414124,-0.009651184,-0.048095703,-0.008934021,-0.010528564,-0.019927979,-0.01360321,-0.005317688,-0.0055351257,0.02722168,0.0053596497,-0.011795044,-0.01361084,0.02130127,-0.0029125214,0.021011353,0.043304443,0.03213501,-0.0026760101,-0.029815674,-0.021392822,0.0017852783,-0.02520752,0.007080078,-0.0018348694,-0.014961243,0.030044556,0.026489258,0.0016822815,-0.0029964447,0.037994385,-0.022888184,0.0047569275,0.021575928,0.029052734,-0.021942139,0.0042877197,-0.028945923,0.01033783,0.010673523,0.02178955,0.008781433,-0.0152282715,-0.009796143,0.042938232,0.02468872,-0.0013370514,0.031982422,0.005832672,0.046569824,-0.01876831,-0.010559082,-0.024887085,-0.0077819824,-0.0231781,0.007633209,0.020553589,-0.016159058,0.027359009,-0.02319336,0.0028877258,-0.03741455,0.01436615,0.0074272156,0.028305054,-0.05517578,-0.036621094,-0.017456055,-0.007331848,-0.035064697,-0.0027675629,0.012016296,0.048919678,0.018737793,0.03918457,0.012161255,-0.000121474266,0.025024414,-0.01663208,-0.023498535,-0.010444641,-0.0027065277,0.01727295,-0.002002716,0.046722412,0.052490234,0.006275177,0.025360107,0.023895264,0.019821167,0.020584106,0.0034389496,-0.018341064,0.036895752,-0.012107849,0.004322052,0.026565552,0.031921387,-0.028945923,0.012428284,0.0034866333,0.030883789,-0.039794922,0.01966858,0.10070801,0.017837524,-0.007331848,0.05886841,-0.02293396,-0.028717041,-0.0021972656,-0.006439209,0.05441284,-0.0049057007,0.02255249,0.039031982,0.00030255318,-0.0069084167,-0.00044250488,-0.013420105,-0.038513184,0.05947876,0.044158936,-0.012260437,-0.0030822754,-0.020233154,0.017333984,-0.03225708,-0.035736084,0.004924774,-0.011268616,0.019042969,-0.005718231,0.0049819946,-0.012161255,0.014434814,0.028808594,-0.00868988,-0.009231567,0.04510498,0.014320374,-0.002981186,0.024139404,-0.0064468384,0.02760315,-0.0040664673,-0.002073288,0.014289856,0.021987915,0.012962341,-0.030731201,0.008239746,-0.0115737915,0.037963867,0.040618896,-0.010025024,0.0035057068,0.013328552,0.0006957054,0.002752304,0.028915405,0.019683838,0.0076789856,0.045074463,0.037750244,0.021560669,-0.022598267,0.020904541,-0.00074625015,0.02722168,-0.014266968,-0.005142212,0.005622864,-0.02154541,0.032348633,0.0004901886,-0.030090332,0.024520874,0.025466919,-0.0025997162,-0.008453369,-0.019882202,0.023071289,-0.017807007,-0.028076172,-0.0067863464,-0.006839752,0.017807007,0.033721924,0.036712646,-0.013290405,0.034362793,0.021881104,-0.015205383,-0.015113831,0.010345459,-0.029434204,-0.01828003,-0.0076828003,-0.030380249,-0.055114746,0.022705078,-0.0031337738,0.01979065,0.018554688,-0.0015392303,-0.008552551,-0.008483887,0.0135650635,0.005722046,-0.0064468384,0.0015411377,-0.003944397,0.010467529,0.04711914,-0.007896423,0.005619049,-0.009315491,-0.005756378,0.01361084,0.0020618439,-0.020309448,-0.0026397705,-0.0017204285,-0.030197144,0.005645752,0.023208618,-0.00029206276,0.053009033,-0.0098724365,-0.021820068,0.009521484,0.022506714,0.0087509155,0.006843567,-0.019104004,0.019729614,-0.041107178,0.032104492,0.03665161,-0.011062622,0.005680084,-0.0052337646,-0.034301758,0.008125305,-0.005039215,0.016540527,-0.027679443,-0.011138916,0.0009946823,0.030151367,-0.021438599,-0.01977539,-0.0022449493,-0.007434845,-0.009231567,-0.019836426,0.014099121,-0.0047187805,0.008506775,0.009307861,0.020858765,-0.038482666,0.06378174,-0.01663208,0.029510498,-0.034454346,0.0028095245,0.049743652,0.030975342,0.034484863,-0.005683899,-0.010055542,-0.02279663,-0.0010814667,0.026641846,0.021575928,0.01727295,-0.005104065,-0.000035762787,0.03677368,0.0044937134,0.021575928,0.007255554,-0.01158905,0.007030487,-0.019866943,-0.008529663,0.0027656555,-0.0030784607,0.017684937,0.021591187,-0.00674057,0.020217896,-0.026245117,-0.0010442734,0.023986816,0.0077819824,-0.0026168823,-0.009857178,-0.013999939,0.039276123,-0.026275635,-0.013801575,-0.0026721954,0.008850098,-0.07147217,-0.024398804,0.019348145,0.023880005,-0.02935791,0.06665039,0.019363403,-0.010215759,0.023101807,0.025619507,-0.0015239716,0.025238037,0.00095033646,0.041748047,0.04776001,0.022064209,-0.0060043335,0.03955078,0.0025901794,-0.025924683,0.023910522,0.044952393,0.0054359436,0.02709961,-0.001124382,-0.002527237,0.0063438416,-0.004627228,-0.020599365,0.00041127205,-0.016815186,-0.0056648254,-0.0008330345,0.02230835,-0.010757446,-0.018798828,-0.025436401,-0.00579834,0.005908966,0.035980225,0.020523071,-0.032287598,0.016479492,-0.002614975,-0.003068924,-0.0019016266,0.003293991,-0.0033397675,-0.045135498,0.00046896935,0.02420044,-0.003288269,0.041046143,-0.036132812,-0.0073432922,0.040771484,0.0287323,0.026306152,0.01084137,-0.0062828064,0.0040893555,0.0009703636,0.0070228577,-0.019332886,-0.012313843,0.012062073,0.0068130493,0.01184082,-0.005054474,0.014320374,-0.020553589,-0.0003774166,-0.004085541,0.002691269,0.0135650635,-0.014045715,-0.010101318,0.017318726,0.027297974,-0.0071525574,-0.020690918,-0.0027561188,0.01424408,0.076171875,0.0051193237,0.014968872,0.020233154,0.035736084,0.013320923,0.050872803,0.020996094,0.02520752,0.00044989586,-0.0158844,-0.0018310547,0.04055786,-0.015007019,-0.02255249,0.028076172,-0.03805542,-0.012931824,0.026611328,0.008491516,0.010131836,-0.027709961,-0.0016899109,-0.0073013306,-0.046539307,-0.013397217,0.0011539459,-0.003025055,-0.0020275116,0.0066452026,0.016464233,0.008071899,-0.026351929,-0.004058838,-0.0028190613,-0.029556274,-0.054138184,-0.011558533,-0.019485474,0.01701355,-0.019592285,0.007461548,-0.0032234192,0.026535034,-0.019256592,-0.00390625,-0.013137817,0.012008667,0.034057617,0.014289856,0.0030174255,-0.020233154,-0.04260254,-0.023010254,-0.012825012,0.0004646778,0.023895264,-0.0262146,0.027145386,0.03543091,-0.0042800903,-0.0015640259,-0.005710602,0.013023376,-0.012191772,-0.011154175,-0.011016846,0.0030212402,0.026794434,0.00983429,-0.021347046,0.019363403,-0.018310547,-0.04333496,-0.0054130554,0.034942627,0.020385742,0.0093307495,0.007144928,-0.0077819824,-0.049102783,0.006248474,-0.020614624,0.0036716461,0.0138549805,-0.019866943,0.0024089813,0.019805908,0.032562256,0.0021877289,-0.0017957687,0.03451538,0.02368164,0.014442444,0.017715454,-0.006954193,0.010887146,-0.031311035,-0.0127334595,0.008865356,0.04611206,0.024719238,0.015899658,-0.017028809,0.0022602081,-0.019958496,0.0057868958,0.019897461,-0.025619507,-0.04977417,-0.017120361,-0.009727478,0.026245117,0.012252808,0.022354126,-0.032989502,0.018432617,-0.017166138,-0.036010742,-0.027740479,0.053222656,-0.0025348663,-0.0345459,-0.0076522827,0.012557983,-0.0046424866,-0.021347046,-0.0015563965,-0.041107178,-0.02571106,-0.025665283,0.0039978027,0.019378662,0.0021457672,0.0052375793,-0.0057792664,0.006214142,-0.009437561,0.033721924,0.015533447,-0.020751953,-0.01235199,0.009635925,0.0066719055,0.00032925606,0.007358551,0.017318726,-0.0073394775,0.0026359558,-0.006679535,-0.0011510849,-0.029693604,0.014961243,0.0287323,-0.00440979,0.02432251,-0.013252258,0.037353516,-0.0033111572,0.022644043,-0.020309448,-0.00705719,0.03579712,-0.025375366,-0.0030212402,-0.0014228821,0.0068626404,-0.02947998,0.0102005005,0.0146102905,0.01878357,-0.025924683,0.037597656,-0.010147095,-0.029922485,0.01133728,0.009086609,-0.018493652,-0.0066986084,0.026351929,-0.007774353,0.009376526,-0.00957489,-0.01776123,-0.018798828,-0.026657104,-0.015899658,-0.008651733,0.0024166107,0.02684021,-0.0014810562,0.054656982,0.013198853,0.016189575,0.023223877,0.014213562,0.030792236,0.020355225,0.03756714,0.012962341,-0.017532349,0.020553589,-0.0006504059,-0.010795593,-0.0026359558,-0.019012451,0.013328552,-0.014968872,-0.0027828217,-0.014755249,0.013679504,0.0152282715,0.020706177,-0.0065231323,0.015945435,-0.04257202,-0.0099487305,-0.019882202,0.0017995834,0.022903442,0.027328491,-0.00248909,-0.009391785,-0.023376465,0.033813477,0.03427124,-0.0124053955,-0.009155273,-0.018035889,0.024734497,-0.01374054,0.024230957,0.0078125,-0.017837524,-0.025268555,-0.00819397,-0.02583313,0.011985779,-0.029937744,0.032440186,0.013893127,-0.019897461,-0.014846802,0.02003479,-0.006965637,0.016082764,0.021636963,0.0060195923,0.022979736,0.010002136,-0.028305054,0.0309906,0.03668213,-0.03086853,0.046813965,0.021118164,-0.002161026,0.008453369,-0.003698349,-0.043182373,-0.021194458,-0.0033912659,-0.012260437],"createdAt":"2026-04-18T18:52:22.490Z","updatedAt":"2026-04-28T18:34:28.795Z","lastSeenAt":"2026-04-28T18:34:28.795Z","tsv":"'/api/v1/portfolios/11/holdings':89 '0.02':10,22,69,120 '000':109 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':131 '0x8335':114 '11':35 '20':108 '2913':115 '300':134 '6':124 'Base network API' 'USDC micropayment API' 'accept':90,184 'access':203 'address':130 'ai/ml':55 'analyt':54 'api':47,144,202 'base':8,20,80,110,117 'bodi':183 'broader':41 'challeng':98 'confirm':99 'connect':153 'contain':177 'content':159 'crawl':142 'crypto portfolio' 'data':31,53 'decim':125 'descript':170,204 'discov':220 'doc':143 'document':137 'enabl':46 'endpoint':26,62,88,186 'equal':119 'exact':222 'exampl':167 'expect':207 'experi':218 'extrem':139 'field':173 'financ':210 'finance-rel':209 'finance/web3':57 'generic':200 'given':121 'hold':3,15,30,175,190 'id':34 'infer':56,192 'infrastructur':59 'investment holdings' 'json':95,212 'json-api' 'live':102 'lowpaymentfee' 'lowpaymentfee.com':28,50 'made':128 'maximum':105 'micropay':6,18 'micropayment' 'model':74 'need':216 'network':81 'offer':48 'openapi':163 'page':148 'paramet':180 'part':38 'path':197 'payment':106,126 'per':11,23,71 'per-request':70 'per-request-billing' 'platform':65 'portfolio':2,14,33,189 'portfolio data' 'portfolio holdings API' 'portfolio-holdings' 'post':91,182 'premium':201 'price':73,145 'prompt':155 'protocol':85 'purpos':188 'readm':147 'relat':211 'render':150 'request':12,24,72,92 'request/response':166 'requir':103 'respons':176,213 'retriev':1,13 'return':29,94 'schema':164,223 'second':135 'settl':75 'share':66 'sole':193 'span':52 'spars':140 'specif':87 'suit':42 'timeout':136 'uniform':68 'unit':111 'url':196 'usdc':77,113,122 'usdc-base' 'user':205 'util':60 'via':4,16,82 'wallet':154 'x402':5,17,45,84,97 'x402 finance API' 'x402-enabled':44 'x402-payment'","prices":[{"id":"55d20812-c2e9-4022-b7f7-b47f634b3ffe","listingId":"a0f336fb-1ac1-4c3a-b2dd-852ae2710f4f","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/11/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":"2026-04-18T18:52:22.490Z"}],"sources":[{"listingId":"a0f336fb-1ac1-4c3a-b2dd-852ae2710f4f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/portfolios/11/holdings","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:52:22.490Z","lastSeenAt":"2026-04-28T18:34:28.795Z"}],"details":{"listingId":"a0f336fb-1ac1-4c3a-b2dd-852ae2710f4f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/portfolios/11/holdings \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge requiring 20,000 base units of USDC on Base (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/portfolios/11/holdings"},{"claim":"All endpoints on the platform are priced at $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 contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/portfolios/11/holdings"}],"useCases":["Fetching current holdings for a specific portfolio programmatically","Integrating portfolio data into dashboards or trading bots","Agents autonomously purchasing financial data per-request without API keys"],"bestFor":["Developers wanting keyless, pay-per-call access to portfolio data","AI agents that can settle x402 payments on Base","Users who prefer micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or guaranteed schema stability","Bulk data consumers who need thousands of calls at volume-discounted rates","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:01.428Z"},"updatedAt":"2026-04-28T18:34:28.795Z"}}