{"id":"413eaa16-d5be-43db-ba4d-580fa8dc6329","shortId":"8JuEf6","kind":"x402","title":"x402-gated product inventory endpoint on Base, pay $0.02 per request in USDC.","tagline":"x402-gated product inventory endpoint on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a product inventory resource (product ID 44) via the x402 payment protocol. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, and utility services — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/products/44/inventory` accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers attach an `X-PAYMENT` header containing a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals). The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. No API keys, subscriptions, or rate limits are advertised — access is purely pay-per-call.\n\nDocumentation beyond the landing page is extremely thin. 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 documentation, and no example payloads available. The endpoint name (\"Premium API Access\") and path (`/products/44/inventory`) suggest it returns inventory data for a specific product, but the exact request body format and response structure are unknown. Agents should expect JSON output based on the declared mimeType but will need to experiment with the request body.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-call","product-inventory","json-api","no-api-key"],"categories":["commerce","data"],"synonyms":["product inventory API","x402 inventory endpoint","pay-per-request API","USDC micropayment API","Base network API","lowpaymentfee","product data endpoint"],"warnings":["No OpenAPI or schema documentation available — request body format and response structure are completely unknown.","Docs, API, pricing, and README pages all render only 'Connect wallet' with no usable content.","The endpoint path references a specific product ID (44); it is unclear whether other product IDs are supported or what 'inventory' data is returned.","The listing title 'Premium API Access' is generic and does not describe the actual functionality."],"endpointUrl":"https://lowpaymentfee.com/api/v1/products/44/inventory","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/products/44/inventory","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming it is operational. However, there is no OpenAPI spec, no request/response documentation, no example payloads, and the docs pages are empty. The purpose ('Premium API Access' for product 44 inventory) is vague and the actual data returned is 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":"2026-04-19T00:00:06.790Z","embedding":[-0.021835327,0.010093689,0.015274048,0.024505615,0.0069732666,-0.04232788,0.004840851,0.041870117,0.057373047,-0.085876465,0.05279541,-0.041992188,-0.035217285,-0.045532227,-0.022979736,-0.00044488907,-0.018295288,0.023773193,-0.087524414,0.006881714,0.0101623535,-0.023391724,-0.018310547,0.02027893,-0.015853882,-0.016052246,-0.020263672,-0.004562378,-0.014274597,-0.046417236,0.03036499,-0.024429321,-0.0048065186,0.022949219,-0.005302429,0.016662598,0.028549194,0.041625977,0.059936523,-0.024749756,-0.023590088,-0.034729004,-0.0073661804,-0.016708374,-0.030456543,-0.0032672882,-0.007129669,-0.028396606,-0.0152282715,-0.016540527,-0.009269714,-0.0135650635,-0.020019531,0.010871887,0.0068893433,0.031341553,-0.0020160675,0.0014419556,0.009017944,0.033081055,0.020202637,-0.088134766,0.006969452,-0.01574707,-0.009132385,0.060516357,-0.030075073,0.060546875,0.0035324097,0.049682617,0.02255249,0.028366089,-0.0060043335,0.0178833,-0.022521973,0.011795044,-0.015914917,0.023742676,-0.024215698,-0.020553589,-0.018737793,0.010025024,-0.041534424,-0.00945282,-0.02230835,-0.06008911,0.012245178,0.011360168,-0.026931763,0.023376465,-0.10168457,-0.0035686493,-0.0029067993,0.015205383,-0.023361206,-0.027130127,-0.0075645447,-0.0003991127,-0.02029419,0.031280518,0.01751709,-0.0013589859,0.016326904,0.0011110306,0.039520264,0.010871887,0.019805908,0.032409668,-0.013046265,-0.043151855,-0.01991272,0.00026750565,-0.012466431,0.016586304,0.010498047,-0.005088806,-0.037994385,0.026306152,-0.009788513,0.03591919,-0.059295654,0.05908203,0.011985779,-0.012420654,0.010757446,-0.0345459,-0.038482666,-0.0058059692,-0.02029419,-0.012336731,0.044311523,0.0013790131,-0.00027656555,-0.059295654,-0.03375244,0.020767212,-0.008758545,-0.0138549805,-0.04208374,0.008987427,0.028579712,-0.04559326,0.033569336,0.004436493,-0.10876465,-0.015220642,-0.02142334,0.002861023,-0.033935547,-0.005153656,0.019088745,0.017807007,-0.02330017,-0.046203613,0.00349617,-0.027450562,-0.017684937,0.04727173,0.0017433167,0.026153564,-0.013557434,0.02204895,0.036865234,-0.014328003,0.023117065,0.033233643,-0.028320312,-0.084106445,-0.0680542,-0.010009766,0.003080368,0.006088257,-0.016967773,-0.011421204,-0.0140686035,-0.04324341,-0.02520752,0.0019702911,-0.013320923,-0.022598267,-0.01979065,-0.057678223,0.0014104843,-0.03466797,-0.049468994,-0.007408142,-0.05380249,0.039886475,0.016311646,0.011985779,0.014015198,0.0062332153,0.04446411,0.0395813,0.0023593903,-0.05206299,0.007865906,-0.03152466,0.044952393,0.0016975403,0.03152466,-0.03768921,0.04333496,0.06689453,-0.019134521,-0.0068359375,-0.00843811,-0.0119018555,-0.040039062,-0.011291504,0.009933472,-0.00242424,-0.0028591156,0.03302002,-0.031204224,-0.026275635,0.01071167,0.048736572,0.0002849102,0.08026123,-0.006298065,-0.006111145,-0.0020694733,0.0058021545,-0.02935791,0.04937744,0.025009155,0.009437561,0.017791748,-0.047027588,0.0075035095,0.016647339,-0.004737854,-0.009780884,-0.01890564,0.031280518,-0.021652222,0.006034851,0.011268616,-0.021011353,-0.02330017,-0.0635376,-0.013793945,0.0020046234,0.011276245,-0.018356323,-0.04244995,-0.09100342,0.0524292,0.050476074,0.016601562,-0.0044937134,0.0079956055,-0.0284729,0.004310608,-0.07208252,0.014472961,0.05279541,-0.019210815,-0.007255554,0.013267517,-0.016723633,-0.02861023,-0.018997192,-0.020019531,0.0013780594,0.036712646,0.0031490326,-0.061401367,0.004299164,0.029312134,0.010826111,0.056152344,-0.020950317,-0.053710938,-0.006652832,-0.026473999,-0.0018730164,-0.031097412,0.011138916,-0.021621704,0.007411957,0.019744873,0.0005021095,0.033721924,0.001373291,-0.0010166168,0.025039673,-0.02796936,0.0033226013,-0.0023727417,0.03451538,0.0022144318,-0.04812622,0.030807495,-0.018600464,0.068359375,-0.044403076,0.045166016,-0.020401001,0.025436401,0.05407715,-0.0015459061,-0.05758667,-0.016204834,0.025283813,0.024551392,0.03744507,0.004798889,-0.021987915,-0.013755798,0.07080078,-0.0017824173,-0.002462387,0.0022258759,0.03564453,0.01890564,-0.017730713,-0.062286377,-0.008987427,-0.0062789917,-0.046905518,0.02670288,-0.021331787,0.02154541,-0.038909912,-0.013053894,-0.030563354,-0.0035037994,-0.03338623,-0.02229309,0.0013589859,0.00504303,-0.0061035156,-0.0011644363,0.011764526,0.030517578,-0.02407837,0.002122879,0.008926392,0.045837402,-0.020690918,-0.0385437,-0.033935547,-0.008857727,-0.024047852,-0.009346008,0.061676025,-0.0007195473,0.0061187744,-0.037261963,0.009315491,0.033691406,-0.003194809,0.028335571,0.0001745224,0.011642456,-0.05319214,-0.059143066,-0.030960083,-0.05432129,0.02949524,0.04937744,0.016220093,0.0340271,-0.039031982,0.031280518,-0.049804688,0.034698486,-0.039733887,0.044281006,0.039611816,-0.036132812,-0.060394287,-0.010009766,0.0021381378,0.015045166,0.034484863,0.0109939575,0.02230835,0.07281494,0.04598999,0.0131073,0.024475098,0.029022217,0.020965576,-0.015716553,0.01499939,-0.046142578,-0.024414062,0.011566162,-0.032409668,-0.014724731,-0.045776367,0.01966858,0.018234253,0.07299805,-0.004135132,0.0151901245,0.032562256,0.019866943,-0.0013141632,-0.018249512,-0.02418518,-0.021606445,-0.023254395,0.039154053,0.013473511,0.010147095,-0.025115967,0.02418518,0.007537842,0.024337769,-0.027664185,0.0496521,0.012748718,-0.009162903,0.010360718,0.0211792,0.04537964,0.0579834,-0.03173828,0.029052734,0.039794922,-0.06161499,-0.005405426,0.01058197,-0.002822876,-0.02583313,-0.045013428,-0.01890564,0.02204895,-0.006412506,-0.040924072,-0.008125305,-0.034088135,0.0068244934,0.028549194,-0.017166138,-0.018356323,0.008529663,-0.0065841675,-0.040222168,-0.022705078,-0.043914795,-0.0032138824,0.035369873,-0.013214111,0.013671875,-0.0045318604,-0.008476257,-0.021850586,-0.008781433,0.005657196,-0.006664276,0.015670776,-0.011726379,-0.002243042,0.017608643,0.011909485,0.0138168335,0.05267334,0.037475586,0.037994385,0.016448975,-0.0036964417,-0.04095459,0.020874023,-0.019348145,0.013198853,0.0023593903,-0.056365967,-0.012420654,-0.035980225,-0.027297974,0.0021076202,-0.011688232,-0.005672455,-0.005050659,0.033447266,-0.017578125,-0.01247406,-0.06112671,-0.021850586,-0.004310608,0.110839844,0.014541626,-0.0016736984,-0.066223145,-0.007610321,0.027008057,0.0012521744,0.017807007,-0.014801025,-0.01171875,-0.0055885315,-0.023162842,-0.020584106,-0.0062026978,0.023345947,0.01259613,-0.028030396,0.03652954,-0.013923645,-0.00035881996,0.008262634,-0.00072336197,0.019439697,0.0029525757,0.0022125244,-0.013015747,0.04272461,-0.0057525635,-0.005580902,-0.04611206,0.03111267,-0.010864258,0.021987915,-0.035491943,-0.0046195984,-0.002090454,0.011405945,-0.00095033646,-0.016418457,-0.014945984,0.0050697327,-0.046813965,-0.043548584,0.032409668,-0.041137695,0.031341553,0.017791748,-0.014343262,0.047790527,0.011634827,0.023605347,0.017745972,-0.028442383,-0.014129639,-0.03189087,-0.018325806,-0.017471313,-0.01727295,-0.018997192,0.021408081,-0.01675415,0.02861023,-0.011314392,-0.026016235,0.044281006,0.013870239,0.03189087,0.015327454,0.0021018982,0.025787354,0.04486084,-0.010940552,-0.05380249,0.032318115,-0.0008840561,0.0031414032,-0.014183044,0.01876831,0.024902344,-0.0025100708,-0.0061798096,-0.007007599,-0.0014476776,-0.03439331,-0.006061554,-0.013404846,0.034576416,0.005115509,-0.0155181885,0.015075684,0.035614014,-0.019378662,-0.042144775,0.011436462,0.02909851,-0.03387451,0.0071105957,0.02935791,0.04333496,-0.03677368,0.010169983,0.01449585,0.021438599,0.030151367,-0.012245178,-0.009262085,0.003042221,-0.0013637543,0.003320694,0.011604309,-0.00026345253,0.0051002502,-0.008384705,0.009437561,0.023666382,0.006378174,0.0028457642,-0.03475952,0.021636963,-0.013999939,-0.016357422,0.039031982,0.037261963,0.006389618,0.0026683807,0.008415222,0.03793335,-0.021728516,-0.003376007,-0.03225708,0.022506714,0.0041046143,0.0012950897,0.012413025,0.0050811768,0.043762207,-0.04309082,0.0011987686,0.0059661865,0.012672424,-0.008392334,-0.019622803,-0.037322998,-0.0141067505,0.026687622,0.014823914,0.0011167526,0.02760315,0.015716553,-0.0024051666,0.006290436,0.0038967133,-0.009811401,-0.032592773,-0.017105103,0.005882263,0.014709473,0.0044555664,-0.03503418,0.030014038,-0.023330688,-0.0055007935,0.01763916,-0.0440979,0.0047302246,0.008094788,-0.012809753,0.01651001,0.0054779053,0.02545166,0.0011034012,-0.03933716,-0.016418457,0.012825012,0.026306152,-0.035064697,0.01953125,0.034240723,-0.00025629997,-0.007637024,0.012786865,0.022445679,0.04446411,0.024215698,0.02909851,-0.017303467,0.019561768,-0.027038574,-0.0023441315,-0.010917664,-0.026748657,-0.010505676,-0.005973816,-0.019958496,0.039489746,-0.006084442,-0.0013227463,-0.012237549,-0.018203735,-0.012588501,-0.051208496,0.023727417,0.02722168,0.03564453,-0.03012085,0.0050735474,-0.0013151169,0.002878189,-0.016784668,-0.02658081,-0.014328003,0.028335571,-0.0132751465,0.006454468,-0.011772156,-0.020355225,-0.035736084,0.015075684,-0.04019165,-0.034729004,0.00059843063,0.0016708374,-0.019561768,-0.004173279,-0.0067596436,-0.017730713,0.0262146,-0.034606934,0.0059509277,0.0024909973,0.010253906,0.021881104,-0.026901245,-0.0028839111,0.032409668,-0.01977539,0.048431396,-0.010574341,0.015045166,-0.044281006,-0.0049438477,0.025650024,0.0395813,0.0046653748,-0.029159546,0.0103302,-0.027526855,-0.06994629,-0.00995636,-0.000050365925,0.0085372925,-0.009880066,-0.009841919,-0.032592773,0.0036087036,-0.031280518,0.022918701,0.0060157776,0.03491211,0.01108551,-0.010246277,-0.0019664764,0.009178162,-0.023986816,-0.04171753,0.0069084167,0.010681152,-0.028549194,0.030273438,0.058776855,-0.012329102,0.011985779,-0.008575439,-0.0077781677,0.026519775,-0.03302002,-0.007091522,-0.00074863434,0.021743774,-0.017044067,-0.017059326,-0.025650024,0.012489319,0.06262207,0.012313843,0.019256592,-0.020767212,-0.013298035,0.007385254,0.027420044,-0.0541687,0.010169983,-0.03866577,0.03414917,-0.051116943,0.027664185,0.012664795,0.032409668,0.013198853,-0.012397766,-0.014541626,0.020843506,0.018630981,-0.058044434,-0.026290894,-0.056884766,-0.002248764,-0.018112183,-0.031143188,-0.012870789,0.006439209,-0.00831604,-0.068725586,-0.0019207001,0.051116943,-0.0023021698,0.019302368,0.002029419,0.03466797,0.038513184,-0.014854431,-0.012382507,0.010185242,-0.02861023,-0.010070801,-0.026046753,0.027740479,0.00995636,-0.011444092,0.019622803,-0.019699097,0.024551392,0.0138168335,0.00687027,-0.007820129,-0.015335083,-0.014862061,0.0037460327,-0.012748718,-0.014472961,0.059448242,-0.037200928,0.01146698,0.025482178,-0.0072898865,0.014945984,0.019836426,0.029937744,-0.027267456,0.005718231,0.035949707,0.032287598,0.025848389,-0.013465881,0.02507019,0.017410278,-0.02168274,0.014801025,-0.035705566,-0.005794525,-0.032714844,-0.028549194,0.020889282,-0.013435364,0.011016846,-0.022369385,-0.0025253296,0.011680603,-0.008361816,0.011070251,-0.013557434,-0.022232056,-0.029205322,0.011627197,-0.0017089844,-0.0067825317,-0.003993988,0.0054740906,0.02178955,0.023880005,0.0026283264,0.015670776,0.00422287,0.046325684,0.0018796921,0.018554688,-0.0012712479,0.00605011,0.03677368,-0.0070991516,0.028945923,-0.025894165,0.00086450577,-0.007843018,-0.0042800903,0.0038547516,0.0038146973,0.01878357,0.011299133,0.0027122498,-0.00038051605,-0.035491943,0.024719238,-0.024749756,-0.031585693,-0.012084961,-0.011405945,0.025787354,0.019302368,-0.021820068,0.014709473,-0.0056266785,0.02760315,0.008460999,-0.005168915,0.0061149597,0.035980225,0.015609741,-0.025436401,-0.02078247,0.009246826,-0.003850937,0.011413574,-0.006713867,0.014801025,0.025680542,-0.001534462,0.006084442,0.008758545,0.023132324,-0.006969452,0.008468628,0.008300781,0.01991272,-0.018814087,0.029312134,-0.032165527,0.005783081,0.031173706,0.02230835,0.0049362183,-0.009880066,-0.043548584,0.0395813,0.016235352,-0.0087509155,0.027450562,-0.0047454834,0.04244995,-0.023361206,-0.040252686,-0.011672974,-0.012382507,-0.02281189,-0.020751953,-0.006641388,-0.011779785,0.033691406,-0.028366089,0.029968262,-0.051116943,0.0023880005,0.0022277832,-0.0015382767,-0.0001296997,-0.038269043,-0.0068244934,0.025527954,-0.03515625,-0.015327454,0.015312195,0.045776367,-0.0028762817,0.019744873,0.04272461,0.019607544,0.0087890625,-0.041870117,-0.01826477,-0.0046043396,-0.015945435,0.029525757,-0.025375366,0.086120605,0.047180176,0.019210815,0.044006348,0.0154800415,0.04547119,-0.007255554,0.03265381,-0.0112838745,-0.0045433044,-0.023925781,0.019226074,0.011039734,0.03717041,-0.016937256,0.018707275,0.0045204163,0.05038452,-0.023254395,0.016738892,0.05630493,0.028030396,0.0051574707,0.041503906,0.009223938,-0.029937744,-0.018539429,0.0068893433,0.07397461,0.0062675476,0.03314209,0.02482605,-0.018936157,0.008529663,0.013153076,-0.03643799,-0.024887085,0.05871582,0.037261963,0.026672363,-0.0154418945,0.00995636,0.008148193,-0.037322998,-0.04309082,0.012916565,0.01979065,-0.0025634766,-0.019241333,-0.01084137,-0.0155181885,0.015419006,0.019317627,-0.0041389465,-0.007522583,0.02784729,0.023284912,-0.0035076141,0.042510986,0.008285522,0.034118652,-0.035461426,-0.008644104,0.012550354,0.026901245,0.006664276,-0.009147644,0.020507812,0.0064926147,0.032318115,0.042755127,-0.008552551,-0.012802124,0.022705078,-0.0121154785,0.0070152283,0.041748047,0.03543091,0.007713318,0.047058105,0.03552246,0.02394104,-0.0385437,0.011550903,0.0045547485,0.022354126,-0.017120361,-0.0309906,-0.017181396,-0.020736694,0.009231567,0.0037136078,0.007972717,0.028686523,0.03744507,0.014892578,0.008773804,-0.0073928833,0.019943237,-0.004547119,-0.020523071,0.017181396,-0.01285553,0.02154541,0.014671326,0.020721436,-0.0029201508,0.030654907,-0.0040016174,-0.022003174,-0.006790161,0.00093889236,-0.029708862,0.0063476562,-0.007007599,0.010437012,-0.042175293,0.019989014,0.012001038,0.012886047,0.026260376,0.003736496,-0.016082764,0.015129089,0.020843506,0.011421204,-0.010940552,0.0064811707,-0.007686615,0.010955811,0.04510498,-0.01209259,0.011520386,-0.0023536682,-0.008926392,0.01234436,-0.019332886,-0.0022735596,0.015548706,0.0154800415,-0.020248413,0.0071983337,0.03414917,0.025421143,0.041870117,-0.0020198822,-0.0047912598,0.000787735,0.038360596,0.02986145,-0.0071258545,0.0062561035,0.0030879974,-0.03338623,0.041137695,0.024414062,0.011260986,0.029785156,-0.028182983,-0.0033035278,0.01878357,-0.014259338,-0.00054454803,-0.022460938,-0.0064735413,-0.0041999817,0.021194458,-0.019073486,-0.03277588,0.00299263,-0.02558899,-0.020751953,-0.013725281,0.0079193115,0.0127334595,0.007545471,0.044830322,0.02432251,-0.01612854,0.05126953,-0.014549255,0.017730713,-0.019195557,0.0014705658,0.054229736,0.035858154,0.026489258,-0.0035991669,-0.006122589,-0.013557434,-0.008346558,0.037963867,0.02168274,0.007083893,-0.021087646,-0.024810791,0.030838013,-0.0014419556,0.018371582,0.022750854,0.004776001,-0.0001732111,-0.013427734,-0.0040512085,-0.02243042,0.0038700104,-0.008712769,0.04724121,-0.0033454895,0.027236938,-0.027267456,-0.00004518032,0.021011353,0.0024986267,0.010681152,0.0043754578,-0.039245605,0.030700684,-0.011695862,-0.0127334595,0.0012168884,0.008262634,-0.051086426,0.012107849,0.011024475,0.015388489,-0.010566711,0.04321289,0.002117157,-0.0013895035,0.012687683,0.028503418,-0.028839111,0.030090332,-0.017059326,0.045135498,0.04824829,-0.026428223,0.00054883957,0.008087158,-0.0007843971,-0.0046463013,-0.0017709732,0.02960205,0.0093688965,0.026382446,0.00018751621,0.013557434,0.00058078766,0.03414917,-0.00091838837,0.0014801025,-0.01927185,-0.009628296,0.033325195,0.0079574585,0.007144928,-0.00045871735,0.0041046143,-0.013961792,-0.005996704,0.043945312,0.018951416,-0.049591064,0.0044784546,0.0001487732,0.021224976,-0.018249512,-0.015716553,0.003917694,-0.036895752,-0.0023021698,0.019866943,0.0006661415,0.012817383,-0.022628784,-0.0070991516,0.034484863,0.018539429,0.0038890839,0.023086548,0.0024261475,0.004852295,-0.030853271,0.008216858,-0.01777649,0.0027503967,0.02355957,0.012001038,0.0014486313,-0.006378174,0.0070648193,0.03479004,0.01058197,0.01423645,-0.012138367,0.033233643,-0.028335571,-0.008232117,-0.0021781921,0.014076233,-0.029388428,0.0034866333,-0.013687134,0.03479004,0.03213501,-0.020584106,-0.0061531067,0.015075684,0.021957397,-0.0037231445,0.021774292,0.013153076,0.05239868,0.021957397,-0.03286743,-0.033050537,0.02357483,-0.022323608,-0.03286743,-0.010108948,-0.020339966,-0.01272583,0.014213562,0.032989502,-0.007965088,-0.014312744,-0.015556335,0.00019574165,-0.009727478,0.028335571,-0.014160156,-0.013298035,-0.00020575523,0.00003796816,0.014434814,-0.01878357,-0.029388428,-0.017044067,-0.017166138,-0.005908966,-0.052093506,-0.0027179718,-0.005996704,0.012557983,-0.011726379,0.0019054413,-0.026138306,0.01423645,-0.011558533,-0.0023822784,0.015281677,0.033599854,0.006641388,-0.0038318634,0.009315491,-0.011543274,-0.036895752,-0.030090332,-0.012863159,-0.005432129,0.028915405,-0.01084137,0.033813477,0.034606934,0.0034446716,-0.0038204193,-0.0031719208,-0.0017747879,-0.015464783,0.0017585754,-0.024017334,0.008628845,0.011199951,0.015327454,0.002565384,0.022476196,-0.020141602,-0.019088745,0.008636475,0.049591064,0.018997192,0.0066719055,0.013946533,-0.0056533813,-0.03201294,-0.009216309,0.0012149811,0.005584717,0.00831604,0.0029563904,-0.0060577393,0.027450562,0.019073486,-0.011993408,-0.0066108704,0.03744507,0.011703491,0.000113248825,0.05001831,0.021759033,0.006752014,-0.026397705,-0.034820557,0.009017944,0.015167236,0.013343811,0.030654907,-0.005092621,0.005870819,-0.016479492,0.018997192,-0.00016069412,-0.018753052,-0.039733887,-0.017425537,-0.040405273,0.021362305,0.008583069,0.009498596,-0.008613586,0.012939453,-0.0054016113,-0.012367249,-0.039489746,0.016479492,0.018936157,-0.010032654,-0.020065308,0.011367798,0.0018987656,-0.010429382,-0.0017614365,-0.04446411,-0.022720337,0.0046043396,-0.00008332729,0.0011930466,0.006374359,-0.023071289,0.0061302185,-0.003955841,-0.008651733,-0.008995056,0.03475952,-0.012336731,0.0037593842,0.036132812,0.008483887,0.010124207,0.014213562,-0.027877808,-0.011299133,0.027267456,-0.003326416,0.00680542,-0.0064315796,0.042297363,0.018630981,-0.004497528,0.019989014,0.013702393,0.031585693,0.009757996,0.011924744,-0.015022278,0.0054740906,0.022338867,-0.01687622,-0.029129028,0.0026607513,-0.017913818,-0.01449585,0.016845703,0.022476196,0.019500732,-0.031951904,0.014129639,-0.009651184,-0.028076172,0.008392334,0.02331543,-0.015930176,-0.011871338,0.035705566,-0.0020160675,-0.002462387,0.010055542,0.007385254,-0.014694214,-0.008720398,-0.0037384033,-0.03805542,0.003768921,-0.00655365,0.005214691,0.0552063,0.0234375,0.017837524,0.021820068,0.004463196,0.030456543,0.009735107,0.029312134,-0.003774643,0.0024051666,0.015625,0.010940552,-0.015808105,-0.0002567768,-0.018554688,-0.008621216,-0.027816772,-0.0038108826,0.0042800903,0.009841919,-0.02519226,0.008239746,-0.01146698,0.0068359375,-0.031036377,0.017623901,-0.016601562,0.0074310303,0.04095459,0.024978638,0.017242432,-0.0011758804,-0.037902832,0.013923645,0.05557251,-0.026763916,-0.034301758,0.018936157,0.015945435,0.004211426,0.0034179688,0.007610321,-0.032348633,-0.016784668,0.0053367615,-0.005382538,-0.0068511963,0.01586914,0.01890564,-0.0038318634,0.010932922,-0.0005784035,0.02557373,-0.0154953,-0.0019550323,0.017333984,0.00472641,0.018585205,0.0010652542,-0.02748108,0.0206604,0.018798828,-0.03942871,0.05142212,-0.00806427,-0.0075569153,-0.011398315,0.014633179,-0.042877197,-0.010185242,-0.004878998,-0.010040283],"createdAt":"2026-04-18T18:38:48.383Z","updatedAt":"2026-04-22T15:00:51.262Z","lastSeenAt":"2026-04-22T15:00:51.262Z","tsv":"'/api/v1/products/44/inventory':92 '/products/44/inventory':206 '0.02':10,24,78,127 '000':123 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':139 '20':122 '44':42 '6':131 'Base network API' 'USDC micropayment API' 'accept':93 'access':34,151,203 'address':138 'advertis':150 'agent':227 'ai/ml':68 'analyt':67 'api':63,143,168,202 'attach':108 'avail':197 'base':8,22,87,124,141,232 'beyond':159 'bodi':220,245 'broader':53 'call':62,157 'caller':107 'connect':177 'contain':114 'content':183 'crypto':71 'data':66,211 'decim':132 'declar':235 'doc':167 'document':158,192 'dozen':57 'endpoint':6,20,30,64,91,199 'exact':218 'exampl':195 'expect':229 'experi':241 'extrem':164 'financ':70 'format':221 'gate':3,17 'handl':101 'header':113 'i.e':126 'id':41 'infer':69 'inlin':102 'inventori':5,19,38,210 'json':98,230 'json-api' 'key':144 'land':161 'limit':148 'lowpaymentfee' 'lowpaymentfee.com':32 'mimetyp':236 'name':200 'need':239 'network':88 'no-api-key' 'offer':56 'openapi':187 'output':231 'page':162,172 'part':50 'path':205 'pay':9,23,60,155 'pay-per-cal':59,154 'pay-per-call' 'pay-per-request API' 'payload':196 'payment':46,99,112,118,134 'per':11,25,61,79,156 'platform':54 'post':94 'premium':201 'price':76,169 'product':4,18,37,40,215 'product data endpoint' 'product inventory API' 'product-inventory' 'prompt':179 'protocol':47,106 'provid':33 'pure':153 'rate':147 'readm':171 'render':174 'request':12,26,80,95,219,244 'request/response':190 'resourc':39 'respons':223 'return':97,209 'schema':191 'sent':136 'servic':74 'settl':82 'sign':116 'sinc':128 'span':65 'spec':188 'specif':90,214 'structur':224 'subscript':145 'suggest':207 'thin':165 'unit':125 'unknown':226 'usdc':14,28,84,117,129 'usdc-base' 'use':130 'util':73 'via':43,103 'wallet':178 'x':111 'x-payment':110 'x402':2,16,45,105 'x402 inventory endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"1ff3cf37-c888-4622-848b-cd3f47a60060","listingId":"413eaa16-d5be-43db-ba4d-580fa8dc6329","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/products/44/inventory","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:48.383Z"}],"sources":[{"listingId":"413eaa16-d5be-43db-ba4d-580fa8dc6329","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/products/44/inventory","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:48.383Z","lastSeenAt":"2026-04-22T15:00:51.262Z"}],"details":{"listingId":"413eaa16-d5be-43db-ba4d-580fa8dc6329","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/products/44/inventory \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-signed-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 challenge with x402Version 1, requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/products/44/inventory"},{"claim":"maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), which equals $0.02","source_url":"https://lowpaymentfee.com/api/v1/products/44/inventory"},{"claim":"The 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":"The platform offers endpoints across data/analytics, AI/ML, finance/web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying inventory levels for a specific product via micropayment","Integrating pay-per-call product data into agent workflows","Accessing product inventory without API key registration"],"bestFor":["Agents needing on-demand product inventory data without subscription commitments","Developers experimenting with x402 payment protocol integrations","Workflows requiring low-cost, keyless API access on Base"],"notFor":["Production use cases requiring documented request/response schemas","Bulk inventory queries across many products (only product 44 is exposed at this path)","Users who need fiat payment rails (this endpoint requires USDC on Base)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:40.682Z"},"updatedAt":"2026-04-22T15:00:51.262Z"}}