{"id":"a1990837-7736-46d6-ac9d-a3159cfc005c","shortId":"z6s5f7","kind":"x402","title":"Pay-per-request premium API access on Base network via x402 protocol at $0.02/call in USDC.","tagline":"Pay-per-request premium API access on Base network via x402 protocol at $0.02/call in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. It is one of many endpoints offered by the platform, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe specific endpoint `/api/v1/policies/41` is labeled \"Premium API Access\" but its exact functionality is not documented beyond that title. The x402 challenge confirms it accepts POST requests, charges a maximum of 20,000 base units of USDC (which equals $0.02 given USDC's 6 decimals), and settles payments to a specified address on Base. The platform advertises instant access with no authentication beyond the x402 payment header.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all only show a \"Connect wallet\" prompt with no additional technical content. There is no OpenAPI spec, no request/response schema documentation, and no examples available for this specific endpoint or any others on the platform.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","http-post"],"categories":["api-gateway","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC micropayment API","lowpaymentfee","Base network API"],"warnings":["No documentation available for this specific endpoint's functionality","No request or response schema provided","All non-homepage pages only display 'Connect wallet' with no content","The purpose of /api/v1/policies/41 is unclear — 'Premium API Access' is a generic label"],"endpointUrl":"https://lowpaymentfee.com/api/v1/policies/41","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/policies/41","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what this endpoint actually does, no request/response schemas, and no examples. The 'Premium API Access' label is generic and uninformative. Docs pages are empty beyond wallet-connect prompts.","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":"2026-04-19T08:01:00.878Z","embedding":[-0.017242432,-0.03753662,0.046325684,0.013092041,0.019973755,-0.022994995,-0.044311523,0.0440979,0.07910156,-0.058502197,0.02482605,-0.03970337,-0.027297974,-0.040161133,-0.027709961,0.01096344,-0.014854431,0.011604309,-0.02658081,0.04058838,0.032073975,0.001168251,-0.03012085,0.042755127,0.022125244,-0.022476196,0.003665924,-0.014465332,-0.011817932,-0.047607422,0.03503418,-0.02709961,-0.0016031265,0.012374878,-0.020004272,-0.014190674,-0.0031776428,0.051818848,0.03112793,0.000027954578,0.002084732,-0.07147217,-0.014160156,-0.004135132,-0.046722412,0.0121154785,0.012062073,-0.02456665,-0.013290405,0.010520935,-0.03765869,-0.008140564,-0.018737793,-0.017166138,0.011230469,0.0034713745,0.016647339,-0.02053833,-0.00017428398,0.011375427,0.0074424744,-0.06762695,-0.024963379,0.018737793,0.0049209595,0.050323486,-0.0070266724,0.04284668,0.024902344,0.049835205,0.057800293,0.05545044,0.01586914,0.021240234,-0.013374329,-0.008506775,-0.012062073,0.076416016,-0.018997192,-0.001701355,-0.013938904,-0.004825592,-0.03302002,0.012496948,-0.0287323,-0.04269409,-0.030578613,0.011520386,-0.01689148,0.009689331,-0.055603027,-0.0043144226,-0.024917603,0.014328003,-0.00024986267,-0.0024356842,-0.019332886,0.02722168,-0.026382446,0.021759033,0.0003399849,-0.03768921,0.005264282,0.017349243,0.049346924,0.040100098,0.024398804,0.026306152,0.011062622,-0.02180481,-0.030044556,0.010444641,-0.010650635,-0.002811432,0.0046844482,0.008239746,-0.026931763,0.01939392,-0.0107040405,0.028121948,-0.06149292,0.051757812,0.020004272,-0.030181885,0.015640259,-0.053771973,-0.011383057,0.013504028,-0.030349731,-0.0016155243,0.02748108,0.008155823,0.034454346,-0.033447266,-0.031402588,0.021026611,-0.0057373047,-0.02293396,-0.0501709,-0.03933716,0.029922485,-0.024871826,0.02835083,0.030044556,-0.10412598,-0.011131287,-0.051513672,0.003446579,-0.03112793,0.0010890961,-0.00045204163,0.035064697,-0.015586853,-0.008033752,-0.03164673,-0.019943237,0.009765625,0.03793335,-0.012252808,0.05709839,-0.0019426346,0.046661377,0.00894165,0.013076782,0.03741455,0.028747559,0.0061302185,-0.06854248,-0.08795166,-0.034057617,-0.009292603,-0.01423645,-0.026382446,0.007827759,0.005558014,-0.090270996,-0.039245605,-0.01876831,-0.00097322464,-0.030975342,0.006046295,-0.029144287,0.000050127506,-0.016708374,-0.058807373,-0.028579712,-0.037017822,0.06585693,0.018753052,0.0017080307,0.033233643,-0.014572144,0.042053223,0.023223877,-0.021911621,-0.040100098,0.001783371,-0.02998352,0.014961243,0.007785797,-0.015159607,-0.039642334,0.023895264,0.0670166,0.014198303,-0.007045746,0.0035438538,-0.04345703,-0.04675293,-0.044830322,-0.0045433044,0.013191223,-0.00065612793,0.029800415,-0.034057617,-0.03857422,-0.009498596,0.01737976,0.017593384,0.06842041,0.0066871643,-0.008026123,0.0124053955,0.016799927,-0.043701172,0.04586792,0.009460449,0.028182983,-0.037261963,-0.018096924,0.004764557,0.044799805,-0.021972656,0.0036411285,-0.022338867,0.03062439,0.0059814453,0.023422241,0.01939392,-0.025405884,-0.018066406,-0.036315918,-0.012580872,0.04522705,0.0065689087,-0.028503418,-0.03982544,-0.059448242,0.0413208,0.033294678,0.046966553,-0.002090454,0.0047569275,-0.031082153,-0.00048041344,-0.06512451,0.058013916,0.070007324,-0.027633667,-0.017715454,0.009857178,0.0068511963,-0.013839722,-0.02720642,-0.012237549,-0.034851074,-0.019851685,0.002790451,-0.036315918,0.002773285,0.00970459,0.022750854,0.0473938,0.0013589859,-0.04660034,-0.027648926,0.009307861,-0.002319336,-0.029129028,0.009613037,-0.0041236877,-0.0025863647,0.011695862,-0.0077323914,0.044525146,-0.011299133,0.00016200542,-0.0004117489,-0.009971619,-0.028121948,-0.03765869,0.028076172,-0.013198853,-0.064086914,0.008369446,-0.008399963,0.07330322,-0.053497314,0.044158936,-0.019470215,0.0032844543,0.060760498,-0.010826111,-0.04547119,0.009307861,0.02885437,0.028701782,0.025756836,0.0025672913,-0.02835083,-0.010391235,0.055511475,-0.011260986,-0.008285522,0.010543823,0.020889282,0.031311035,-0.0063667297,-0.06976318,-0.027755737,-0.021530151,-0.04019165,0.01676941,-0.023330688,0.02708435,-0.020629883,0.0017795563,-0.029022217,0.00932312,-0.019989014,0.029373169,-0.042816162,0.0032730103,-0.023223877,0.0066337585,0.008415222,0.028549194,-0.014213562,0.0006952286,0.027404785,0.023223877,-0.010528564,-0.032684326,-0.0041275024,-0.027404785,0.01890564,0.017440796,0.024978638,0.016601562,0.049102783,-0.035186768,0.008087158,0.03375244,0.014274597,0.0357666,-0.0034599304,0.012138367,-0.07043457,-0.0725708,-0.018478394,-0.041778564,0.025726318,0.0052223206,0.0056877136,0.032073975,-0.0027999878,-0.006340027,-0.03994751,0.022262573,-0.038146973,-0.01096344,0.038909912,-0.013313293,-0.024536133,0.0024375916,0.009689331,0.0006427765,0.038909912,0.018417358,0.01285553,0.061309814,0.0625,0.009757996,0.027633667,0.008201599,0.024246216,-0.007411957,-0.030075073,-0.027160645,0.00096559525,0.03543091,-0.014640808,-0.00687027,-0.0680542,0.052459717,0.034820557,0.0637207,0.01777649,0.014976501,0.025878906,-0.005470276,0.01184082,-0.020751953,-0.006511688,-0.035461426,-0.042816162,0.020706177,-0.016021729,-0.020965576,-0.027297974,0.029708862,-0.013389587,0.020645142,-0.02178955,0.054016113,-0.00044369698,-0.0068626404,0.020980835,0.002002716,0.040039062,0.061065674,-0.03286743,0.033966064,0.018875122,-0.018447876,-0.0026283264,0.031021118,-0.013175964,-0.02281189,-0.058013916,-0.03604126,-0.011711121,0.0049591064,-0.05859375,0.0060043335,0.0046195984,0.013648987,0.031921387,-0.024414062,-0.017837524,0.008163452,-0.025650024,-0.05596924,-0.0007829666,-0.036102295,0.00056648254,0.056152344,-0.0031776428,-0.005393982,0.013648987,0.0031108856,0.01309967,0.0031108856,0.017974854,-0.0011835098,-0.047698975,0.021652222,0.019958496,0.014640808,0.030227661,0.031585693,0.023147583,0.018798828,0.04840088,0.021713257,-0.03491211,-0.060302734,0.022964478,-0.062286377,0.004169464,0.0008711815,-0.012397766,-0.013427734,-0.035217285,-0.0008368492,-0.036743164,0.0063285828,-0.023651123,0.012886047,0.021438599,-0.036010742,-0.031677246,-0.05670166,-0.01386261,0.0008702278,0.0680542,0.05130005,-0.011512756,-0.06939697,-0.012062073,0.019226074,0.009544373,0.017105103,-0.013153076,-0.01399231,-0.022216797,-0.027832031,-0.022857666,-0.029144287,0.028823853,-0.011817932,-0.011756897,0.02267456,-0.004085541,0.009117126,0.007030487,0.0026359558,0.031829834,-0.02545166,-0.007381439,-0.022949219,0.022613525,0.0022659302,-0.0035476685,-0.05380249,0.037872314,0.015655518,0.0287323,-0.025024414,0.006290436,-0.0032196045,0.009506226,0.016555786,-0.0051460266,-0.004638672,0.0034599304,-0.05380249,-0.064331055,0.042755127,-0.028549194,0.036468506,0.011199951,0.018493652,0.018341064,0.0064315796,0.0067710876,0.02456665,-0.020950317,-0.0135269165,-0.01852417,-0.026672363,-0.028579712,0.0021533966,-0.016586304,0.015296936,-0.017486572,0.009208679,0.00045466423,-0.015991211,0.030258179,-0.0069999695,-0.008354187,0.017349243,0.008934021,0.015571594,0.044647217,-0.0041885376,-0.03164673,0.025772095,0.013366699,0.0061302185,-0.01586914,0.030303955,0.019821167,-0.01247406,0.001830101,0.0051498413,-0.019439697,-0.015449524,-0.0152282715,0.013366699,0.027877808,0.0060653687,-0.033111572,0.013999939,0.020431519,-0.024871826,-0.02142334,0.021240234,-0.0019168854,-0.032165527,0.02798462,0.023101807,0.0635376,-0.013336182,0.0049819946,0.007270813,0.034118652,0.010322571,0.022949219,-0.010398865,0.017181396,-0.0066375732,-0.0012865067,-0.0002822876,-0.007980347,0.020751953,0.008583069,0.015853882,0.032043457,0.0087890625,-0.027526855,-0.03062439,0.0033912659,-0.007686615,-0.015129089,0.021469116,0.02330017,0.017852783,-0.030456543,0.017242432,0.026855469,-0.020065308,-0.020767212,-0.010116577,0.050872803,-0.016967773,-0.010787964,0.0082473755,0.013687134,0.028656006,-0.056243896,0.0045433044,0.0049934387,0.009994507,-0.03149414,-0.03945923,-0.03781128,0.0087509155,0.03414917,0.017791748,0.015213013,0.033935547,0.010414124,0.006210327,0.027877808,0.0073623657,-0.007881165,-0.023925781,-0.042419434,-0.0033683777,0.0017232895,-0.005455017,-0.022003174,0.013748169,-0.023361206,-0.025604248,0.010169983,-0.00793457,-0.008201599,-0.0075798035,-0.0019035339,0.015701294,-0.0017986298,0.010650635,-0.01637268,-0.025543213,0.0037879944,0.013267517,0.025039673,-0.04269409,0.019119263,-0.0056648254,0.0035190582,-0.0014257431,0.009605408,0.03262329,0.03744507,0.003686905,0.037384033,-0.040374756,0.027023315,-0.041503906,0.012062073,-0.00082206726,-0.03463745,0.0010881424,-0.018112183,-0.009605408,0.03503418,-0.01423645,-0.011238098,-0.024673462,-0.016616821,-0.011375427,-0.04800415,0.0035820007,0.04067993,0.034057617,-0.02859497,0.008468628,-0.0068206787,-0.011734009,-0.013626099,0.008430481,-0.008888245,0.030975342,0.015075684,0.0012197495,-0.036254883,-0.02545166,-0.012825012,0.004096985,-0.03466797,-0.038909912,-0.013305664,0.0016717911,-0.0093307495,-0.018737793,-0.050354004,-0.026885986,0.0052757263,-0.040161133,0.011543274,0.0047798157,0.011550903,0.013313293,-0.014060974,0.0066833496,0.023162842,-0.018295288,0.031799316,-0.0046157837,-0.0008883476,-0.042755127,0.008575439,0.04437256,0.024230957,0.0009860992,-0.012138367,-0.006549835,-0.026611328,-0.060943604,-0.0042915344,-0.0028018951,-0.0041389465,0.009170532,-0.00024068356,-0.041229248,-0.014915466,-0.015434265,0.004283905,0.020767212,0.013977051,0.017364502,0.0044937134,0.00049352646,0.0007505417,-0.008323669,-0.044830322,0.019165039,0.009185791,-0.0059509277,0.0107803345,0.049926758,0.0067825317,-0.011932373,0.009788513,-0.0024871826,0.010520935,-0.022659302,-0.01159668,-0.009994507,-0.0044288635,-0.02784729,-0.011405945,-0.035064697,0.0031871796,0.09124756,-0.010391235,0.00724411,-0.008895874,-0.022003174,0.028198242,0.03302002,-0.03967285,-0.010757446,-0.027526855,0.01965332,-0.017303467,0.01576233,0.0018644333,0.021408081,-0.01928711,-0.05770874,-0.024246216,0.007293701,-0.015449524,-0.061645508,-0.01525116,-0.07171631,-0.008934021,-0.008644104,-0.02909851,0.0035820007,-0.0010356903,-0.01864624,-0.072509766,0.006149292,0.044525146,0.0082092285,0.024108887,-0.012588501,0.01965332,0.026855469,-0.042541504,-0.0335083,0.033355713,-0.035186768,-0.00831604,-0.033721924,0.030654907,-0.015022278,-0.012496948,0.008277893,0.011062622,0.02003479,-0.014602661,0.0054473877,-0.016586304,0.013450623,-0.0151901245,0.03302002,-0.009101868,-0.011695862,0.027526855,-0.035308838,0.018463135,0.027679443,-0.010307312,-0.013580322,0.02935791,0.034118652,-0.038024902,-0.010879517,0.02760315,0.009567261,0.03591919,-0.031585693,0.05026245,0.021057129,-0.029083252,0.024810791,-0.011940002,-0.02720642,-0.05441284,-0.03086853,0.018554688,-0.011497498,0.034210205,-0.012748718,0.017150879,0.009216309,0.0024909973,0.009376526,-0.02482605,-0.029830933,-0.020263672,0.009742737,0.003967285,-0.007217407,0.00074863434,0.02154541,0.017929077,0.042144775,0.010360718,-0.008956909,0.030303955,0.017318726,-0.015991211,0.017425537,0.020401001,-0.008026123,0.009971619,0.015945435,0.0059776306,-0.053649902,-0.0069389343,-0.014884949,-0.0032634735,0.011726379,0.0051879883,0.0019464493,-0.010612488,-0.006046295,0.00598526,-0.0368042,0.010688782,-0.01776123,-0.038146973,-0.0039138794,-0.024291992,0.0030975342,0.00041365623,0.0069885254,0.015129089,-0.008605957,0.043884277,-0.0017471313,-0.0064697266,0.018341064,0.048858643,0.010276794,-0.03161621,-0.0061035156,-0.0027236938,0.007987976,0.0040359497,-0.032562256,0.018814087,0.033691406,-0.010231018,0.009109497,0.0002772808,0.03225708,-0.011451721,0.008644104,0.0047073364,0.021255493,-0.023101807,0.030471802,-0.035858154,-0.002204895,0.018249512,0.014587402,0.002128601,-0.022949219,-0.022216797,0.011436462,0.008056641,-0.022598267,0.052520752,-0.004753113,0.027252197,-0.022964478,-0.01828003,0.0031661987,-0.031585693,-0.020065308,0.024291992,0.000113487244,0.004550934,0.022064209,-0.016830444,0.042236328,-0.032104492,0.0067710876,0.018539429,-0.0055732727,-0.018325806,-0.013053894,-0.022888184,-0.016159058,0.00044727325,0.0066947937,-0.004825592,0.049804688,-0.00022614002,0.033081055,0.04309082,0.024856567,0.01007843,-0.037353516,-0.024780273,-0.00026392937,-0.01776123,0.009895325,-0.015487671,0.048187256,0.042266846,-0.00093126297,0.033935547,0.029769897,0.026184082,0.0068206787,0.00085639954,-0.0135269165,0.017410278,-0.010635376,0.019302368,0.009475708,0.04055786,-0.025772095,0.029525757,0.0077323914,0.022140503,-0.038238525,0.04437256,0.06210327,0.014411926,-0.007774353,0.04220581,-0.012825012,-0.021377563,-0.00919342,0.0009717941,0.05709839,0.006931305,0.054656982,0.036346436,0.016693115,-0.005744934,0.03186035,-0.029449463,-0.036895752,0.064453125,0.02142334,-0.02645874,-0.0124053955,-0.0034122467,-0.0010967255,-0.04336548,-0.03805542,0.014526367,-0.0005850792,-0.008148193,0.0022830963,0.01007843,-0.013061523,0.02784729,0.016479492,-0.0066566467,-0.009002686,0.03515625,0.036499023,-0.00066280365,0.02078247,0.0069885254,0.037872314,-0.020202637,-0.011787415,0.018081665,0.019989014,0.004535675,0.0027656555,0.008506775,0.009895325,0.04800415,0.038635254,-0.02381897,0.012763977,0.02507019,0.009559631,0.0014219284,0.03074646,0.03930664,0.0026130676,0.024963379,0.03933716,0.03274536,-0.036346436,0.0065689087,-0.013839722,0.006374359,-0.012161255,-0.010414124,0.003435135,-0.01586914,0.011199951,-0.0013160706,-0.0066184998,0.028625488,0.02798462,0.01197052,0.0011091232,-0.016433716,0.0093688965,-0.012649536,0.0021076202,0.022628784,-0.016616821,0.02519226,0.020629883,0.02355957,-0.029129028,0.030258179,-0.011375427,-0.01651001,0.010108948,0.0042419434,-0.03744507,-0.008995056,-0.010002136,0.0018482208,-0.04232788,0.0014820099,0.028076172,-0.01474762,0.03894043,0.008178711,0.003250122,-0.0098724365,0.02130127,0.011451721,-0.0016908646,-0.004688263,-0.019424438,0.034820557,0.034606934,0.0049095154,0.015213013,-0.01965332,-0.0033512115,0.010261536,0.0014686584,0.004550934,-0.015060425,-0.027770996,-0.046691895,0.007411957,0.04272461,0.026977539,0.035614014,-0.008216858,-0.0103302,-0.00039315224,0.03186035,0.004901886,0.0017375946,-0.006526947,0.028930664,-0.021606445,0.045715332,0.042388916,0.002117157,0.019973755,-0.01676941,-0.03414917,0.013153076,-0.011878967,0.010726929,-0.0074691772,0.009353638,-0.020263672,0.018737793,-0.003490448,-0.03668213,0.0064697266,-0.014953613,-0.018310547,-0.029129028,0.013954163,0.0053863525,0.021194458,0.029373169,0.0020713806,-0.029907227,0.0552063,-0.017288208,0.043304443,-0.014816284,0.002319336,0.055511475,0.0317688,0.035369873,0.009651184,0.02357483,-0.03152466,0.027709961,0.032928467,0.02658081,0.010231018,0.0037994385,-0.011924744,0.03805542,0.017242432,0.0234375,-0.00052690506,0.00033283234,0.011886597,-0.001335144,-0.0012769699,-0.0021877289,-0.027755737,0.013191223,0.035858154,-0.03314209,-0.008979797,-0.027923584,-0.014373779,0.033996582,-0.0008955002,0.0036067963,0.004878998,-0.035736084,0.020263672,-0.02192688,-0.012451172,-0.004219055,0.035247803,-0.043060303,-0.019378662,0.00484848,0.01309967,-0.01550293,0.02468872,0.029129028,0.007019043,0.009651184,0.045135498,-0.00554657,0.041107178,0.004119873,0.015716553,0.025848389,-0.007144928,-0.01977539,0.019348145,0.020187378,-0.01991272,-0.004432678,0.04220581,-0.001912117,0.00217247,0.00043201447,-0.009307861,0.013885498,0.016555786,-0.002281189,0.0020599365,-0.012954712,-0.016967773,0.0044784546,-0.0016269684,0.005138397,0.0041656494,-0.017166138,-0.012840271,0.017868042,0.034118652,0.02218628,-0.026733398,0.00687027,0.015350342,0.0055351257,-0.016540527,-0.015075684,-0.011299133,-0.032073975,0.02142334,0.011428833,-0.006664276,0.024414062,-0.014823914,-0.007232666,0.028869629,0.018341064,0.0027770996,0.004070282,-0.00019979477,0.020385742,-0.021575928,-0.0015802383,-0.009963989,-0.009887695,0.008071899,0.020523071,-0.0034103394,-0.026473999,0.027450562,-0.006286621,0.014976501,0.004470825,-0.022338867,0.013336182,-0.011894226,-0.012329102,0.006084442,0.005065918,-0.01689148,-0.015060425,-0.017791748,0.020706177,0.049591064,-0.0078048706,-0.009559631,0.018981934,0.01374054,0.01689148,0.028533936,0.010543823,0.038391113,0.02935791,-0.024261475,-0.024154663,0.01361084,-0.030670166,-0.033935547,0.016525269,-0.013801575,-0.010513306,0.021743774,0.0008392334,-0.004890442,-0.032989502,-0.011726379,-0.0085372925,-0.020202637,0.030548096,-0.012619019,0.00806427,-0.018478394,-0.031021118,0.0053863525,-0.021347046,-0.04827881,-0.027359009,-0.0072021484,-0.01889038,-0.04449463,0.021026611,-0.032989502,0.028579712,-0.027175903,-0.0079574585,-0.011779785,0.038085938,-0.02128601,0.008300781,0.01399231,0.024490356,0.00894165,0.013313293,0.019546509,-0.029678345,-0.049957275,-0.01713562,-0.007408142,0.004333496,0.022399902,0.0010585785,0.037078857,0.005859375,-0.0032787323,-0.0064811707,-0.008293152,0.0034656525,-0.005290985,-0.018096924,-0.00869751,0.012802124,0.012435913,-0.0011482239,-0.008628845,0.04147339,-0.021972656,-0.02116394,0.026748657,0.05709839,0.02420044,0.03930664,-0.01751709,-0.0026512146,-0.008049011,0.011627197,-0.010787964,0.011619568,0.004432678,0.0019254684,-0.017532349,-0.01171875,0.020339966,-0.004512787,-0.008071899,0.024261475,-0.0004079342,-0.010238647,0.030944824,0.010055542,0.0011701584,-0.006412506,-0.019622803,0.023986816,0.043548584,0.022216797,-0.004737854,-0.012512207,0.0070495605,-0.01914978,0.010856628,0.017364502,-0.021911621,-0.035736084,-0.025360107,-0.033294678,0.023834229,0.00038576126,0.016189575,-0.0033092499,0.025299072,-0.023330688,-0.016357422,-0.016326904,0.026123047,0.00819397,-0.023010254,-0.0019292831,0.0005431175,0.02835083,-0.02885437,0.0037441254,-0.03479004,-0.021697998,-0.008087158,-0.024536133,0.029296875,0.015541077,0.00020241737,-0.0013275146,-0.0014152527,-0.0071258545,-0.005104065,0.031829834,-0.01864624,-0.0060272217,0.0158844,0.009895325,-0.028320312,0.014411926,-0.00041604042,-0.0057144165,0.0039978027,-0.022262573,0.01499176,-0.0033435822,0.044158936,0.00004339218,-0.0054969788,0.032165527,0.0024356842,0.02178955,-0.023895264,0.023101807,-0.0005373955,-0.010131836,0.0335083,-0.029144287,-0.02406311,0.011642456,-0.014099121,-0.03793335,0.016723633,0.020950317,0.026504517,-0.016235352,0.03692627,-0.012840271,-0.014854431,0.024963379,0.015213013,-0.009643555,0.003107071,0.02947998,0.0024223328,-0.012641907,-0.0022277832,-0.00843811,-0.029144287,-0.015335083,0.014503479,-0.014434814,-0.007167816,0.019577026,0.003566742,0.029632568,-0.0017356873,0.015792847,0.019851685,-0.0010213852,0.028823853,0.024490356,0.06585693,-0.010749817,-0.028945923,0.014389038,0.0020751953,-0.026397705,-0.011367798,-0.0158844,-0.00057792664,-0.035614014,0.02619934,-0.0030765533,0.022842407,-0.0259552,0.007736206,-0.020324707,-0.007587433,-0.03112793,-0.015563965,-0.029205322,0.022766113,0.03491211,0.0065956116,0.018966675,0.014060974,-0.027053833,0.02532959,0.055847168,-0.0070266724,-0.033843994,-0.010421753,0.013023376,-0.004257202,-0.004917145,0.0059394836,-0.02458191,-0.030029297,0.010437012,-0.01525116,0.006412506,-0.010414124,0.012664795,0.0058555603,0.003025055,0.006023407,0.01713562,-0.0049972534,0.0031394958,0.010063171,-0.005542755,0.03010559,0.027526855,-0.00749588,0.029525757,0.029022217,-0.028930664,0.048675537,-0.0058403015,0.021499634,-0.024490356,0.00592041,-0.03930664,-0.021575928,-0.0014343262,0.0061836243],"createdAt":"2026-04-18T18:51:50.518Z","updatedAt":"2026-04-23T08:01:37.221Z","lastSeenAt":"2026-04-23T08:01:37.221Z","tsv":"'/api/v1/policies/41':104 '/call':16,34 '0.02':15,33,82,140 '000':133 '20':132 '6':144 'Base network API' 'USDC micropayment API' 'accept':125 'access':7,25,44,109,159 'addit':191 'address':152 'advertis':157 'ai':66 'analyt':65 'api':6,24,43,94,108,177 'authent':162 'avail':206 'base':9,27,90,134,154 'beyond':117,163 'categori':62 'challeng':122 'charg':128 'commit':99 'confirm':123 'connect':186 'content':193 'data':64 'decim':145 'doc':176 'document':116,168,202 'endpoint':38,55,75,103,210 'equal':139 'exact':112 'exampl':205 'extrem':173 'financ':69 'function':113 'given':141 'header':167 'http-post' 'includ':63 'infrastructur':72 'instant':158 'key':95 'label':106 'learn':68 'limit':97 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':67 'mani':54 'maximum':130 'network':10,28,91 'no-api-key' 'offer':56 'one':52 'openapi':197 'other':213 'page':181 'paid':85 'pay':2,20 'pay-per-call API' 'pay-per-request':1,19 'payment':48,148,166 'per':3,21,83 'platform':59,78,156,216 'post':126 'premium':5,23,42,107 'premium API' 'price':80,178 'prompt':188 'protocol':13,31,49 'provid':41 'rate':96 'readm':180 'request':4,22,84,127 'request/response':200 'requir':100 'schema':201 'settl':147 'show':184 'site':171 'span':61 'spars':174 'spec':198 'specif':102,209 'specifi':151 'technic':192 'titl':119 'unit':135 'usdc':18,36,87,137,142 'usdc-base-network' 'util':73 'via':11,29,45 'wallet':187 'web3':70 'x402':12,30,47,121,165 'x402 endpoint' 'x402-payment'","prices":[{"id":"6ecf0225-d33a-4269-9b2b-3a41311f9daf","listingId":"a1990837-7736-46d6-ac9d-a3159cfc005c","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/policies/41","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:51:50.518Z"}],"sources":[{"listingId":"a1990837-7736-46d6-ac9d-a3159cfc005c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/policies/41","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:51:50.518Z","lastSeenAt":"2026-04-23T08:01:37.221Z"}],"details":{"listingId":"a1990837-7736-46d6-ac9d-a3159cfc005c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/policies/41 \\\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":"Platform charges $0.02 per request with no API keys, rate limits, or minimums","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge confirms maxAmountRequired of 20000 base units USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/policies/41"},{"claim":"Asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is USDC on Base","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API functionality with per-request USDC micropayments","Integrating pay-as-you-go API calls without managing API keys or subscriptions","Agent-driven API consumption using x402 payment protocol"],"bestFor":["Developers wanting zero-commitment pay-per-use API access","AI agents that can settle x402 payments autonomously","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or schemas before integrating","High-volume use cases where per-request pricing may add up","Users without USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:02.951Z"},"updatedAt":"2026-04-23T08:01:37.221Z"}}