{"id":"dc5eee25-c125-4f65-8f19-794640dcc24d","shortId":"CuJFVy","kind":"x402","title":"Pay-per-call API platform on Base with USDC payments via x402 — $0.02/request, no API keys required.","tagline":"Pay-per-call API platform on Base with USDC payments via x402 — $0.02/request, no API keys required.","description":"lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/policies/25` is listed as \"Premium API Access\" and returns JSON. It charges up to 20,000 base units of USDC (0.02 USD per request, since USDC uses 6 decimals) with no API keys, no rate limits, and no commitments required.\n\nThe broader platform offers endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request and settle via USDC on Base.\n\nThis particular endpoint (`/api/v1/policies/25`) is labeled \"Premium API Access\" but no further documentation describes what data or functionality it actually returns. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. Without schema details or example responses, the exact purpose of this endpoint remains unclear.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","http-post"],"categories":["api-platform","infrastructure"],"synonyms":["low payment fee","x402 api","pay per call api","usdc api","base network api","micropayment api","premium api access"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content","The purpose and response format of /api/v1/policies/25 ('Premium API Access') is completely undocumented","No OpenAPI schema or example responses are provided","No request body schema is documented — unclear what POST body is expected"],"endpointUrl":"https://lowpaymentfee.com/api/v1/policies/25","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/25","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 payment details. However, there is no documentation, no OpenAPI schema, no example request/response, and no description of what the endpoint actually returns. The docs pages are empty beyond a wallet-connect prompt. This is 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":"2026-04-19T08:02:48.209Z","embedding":[-0.015457153,-0.0362854,0.043060303,0.018676758,0.016342163,-0.016723633,-0.0345459,0.027740479,0.07489014,-0.066345215,0.020568848,-0.03982544,-0.033966064,-0.04663086,-0.027404785,0.015731812,-0.023239136,0.0071372986,-0.027160645,0.039093018,0.019836426,-0.002412796,-0.03265381,0.041534424,0.0067100525,-0.025405884,0.0054779053,-0.010635376,-0.009391785,-0.05645752,0.04006958,-0.023468018,-0.015701294,-0.0036315918,-0.0211792,-0.012481689,-0.010902405,0.028213501,0.022109985,0.0049591064,-0.0112838745,-0.059814453,-0.0032024384,-0.015098572,-0.051483154,0.008422852,-0.0015773773,-0.01940918,-0.0099487305,0.008338928,-0.028884888,-0.011299133,-0.0098724365,-0.009773254,0.0076446533,0.013473511,0.008804321,-0.022491455,0.019424438,0.010643005,0.00944519,-0.07086182,-0.03237915,0.019729614,-0.00077438354,0.064331055,0.000056028366,0.037078857,0.014526367,0.06323242,0.05142212,0.060791016,0.019882202,0.021362305,-0.012184143,-0.0014104843,0.0018825531,0.06561279,-0.023391724,-0.012886047,-0.0020198822,-0.012229919,-0.045684814,0.013885498,-0.018066406,-0.03970337,-0.02949524,0.021148682,-0.014038086,0.026275635,-0.06463623,-0.01689148,-0.026870728,0.0020275116,0.003944397,-0.011627197,-0.00793457,0.03060913,-0.019302368,0.018295288,-0.0042152405,-0.03967285,0.0039367676,0.018829346,0.036590576,0.032287598,0.026168823,0.022384644,0.017440796,-0.00592041,-0.045715332,0.009689331,-0.0069618225,0.0026378632,0.020217896,0.006767273,-0.029388428,0.031829834,-0.022750854,0.012145996,-0.04937744,0.04336548,0.013954163,-0.017440796,0.015533447,-0.050842285,-0.023635864,0.020996094,-0.029037476,-0.011558533,0.018936157,0.012840271,0.026046753,-0.030090332,-0.028961182,0.0149002075,-0.0044441223,-0.024520874,-0.05038452,-0.03201294,0.038360596,-0.031311035,0.031555176,0.02923584,-0.1149292,-0.009719849,-0.06161499,0.013328552,-0.043060303,-0.006515503,-0.010391235,0.030166626,-0.01159668,-0.01461792,-0.030090332,-0.021514893,0.010826111,0.02911377,-0.011543274,0.056793213,-0.021469116,0.049072266,0.024002075,0.012512207,0.037750244,0.030273438,0.0034294128,-0.07928467,-0.0859375,-0.022354126,-0.016525269,-0.026306152,-0.022216797,0.0067100525,-0.014404297,-0.08282471,-0.019866943,-0.01424408,-0.0014600754,-0.02897644,0.0026626587,-0.033203125,-0.0056991577,-0.028152466,-0.06982422,-0.023880005,-0.035064697,0.05987549,0.00894165,0.017410278,0.028259277,-0.029754639,0.050598145,0.024917603,-0.015548706,-0.026428223,0.008300781,-0.025177002,0.009475708,-0.0018453598,-0.00579834,-0.030944824,0.039611816,0.06359863,-0.004875183,-0.0043029785,-0.011444092,-0.052612305,-0.03817749,-0.05606079,0.009765625,0.018615723,-0.0048828125,0.04067993,-0.050109863,-0.036193848,-0.011512756,0.016159058,0.012252808,0.07720947,0.015975952,-0.005760193,0.03390503,0.013320923,-0.059661865,0.034301758,0.021331787,0.0028209686,-0.03616333,-0.008430481,0.0154800415,0.037628174,-0.022857666,0.012542725,-0.023803711,0.026153564,-0.00077819824,0.015434265,0.016677856,-0.020004272,-0.030136108,-0.027801514,-0.011505127,0.034942627,-0.00026392937,-0.022735596,-0.03250122,-0.0715332,0.041168213,0.03652954,0.03656006,-0.0013437271,0.0036945343,-0.031433105,-0.006210327,-0.05996704,0.06512451,0.0758667,0.0003437996,-0.010848999,0.018951416,-0.0015907288,-0.010002136,-0.010345459,-0.011833191,-0.04559326,-0.009155273,0.0035362244,-0.038726807,0.0071029663,0.0146484375,0.02394104,0.0463562,-0.005214691,-0.044952393,-0.02128601,-0.0014476776,-0.01826477,-0.02748108,0.008453369,-0.010391235,-0.0049362183,0.010848999,-0.0012483597,0.042053223,-0.0027694702,-0.014320374,-0.0043029785,-0.0062179565,-0.018981934,-0.021713257,0.024642944,-0.0024433136,-0.05227661,0.0029582977,0.006893158,0.076171875,-0.05267334,0.029449463,-0.006980896,-0.00022923946,0.06060791,-0.0029621124,-0.05102539,0.01625061,0.025268555,0.013694763,0.027252197,0.006126404,-0.03466797,-0.013961792,0.06506348,-0.009262085,-0.011512756,-0.000030457973,-0.0006918907,0.030532837,-0.01878357,-0.06561279,-0.0206604,0.0028057098,-0.052246094,0.009857178,-0.03137207,0.027328491,-0.012908936,-0.00039458275,-0.022125244,0.009613037,-0.024429321,0.022842407,-0.028320312,0.008430481,-0.0158844,-0.008666992,-0.011154175,0.01133728,-0.017105103,-0.0013046265,0.030944824,0.02128601,-0.0013513565,-0.026000977,-0.028778076,-0.010437012,0.0055236816,0.024536133,0.019729614,0.018615723,0.046051025,-0.035064697,0.011566162,0.025787354,0.017959595,0.03353882,0.00049209595,0.010063171,-0.077697754,-0.059051514,-0.027359009,-0.026870728,0.030761719,0.0135650635,-0.004825592,0.034088135,0.013809204,-0.020721436,-0.032165527,0.024047852,-0.02859497,-0.0053710938,0.021759033,-0.01965332,-0.025039673,0.010498047,-0.004261017,-0.00042939186,0.049682617,0.023788452,0.024093628,0.064453125,0.05697632,0.00014710426,0.023590088,0.009147644,0.027160645,0.0031280518,-0.027908325,-0.024963379,-0.008094788,0.043304443,-0.017532349,-0.013031006,-0.068359375,0.04916382,0.03652954,0.07647705,0.022857666,0.004837036,0.033813477,-0.012748718,0.01586914,-0.018844604,-0.015991211,-0.036193848,-0.040405273,0.011940002,-0.022277832,-0.002105713,-0.045043945,0.050872803,-0.009048462,0.014167786,-0.029785156,0.052978516,-0.016494751,-0.014350891,0.012435913,0.017974854,0.04171753,0.06774902,-0.026428223,0.023712158,0.02848816,-0.025009155,-0.0065574646,0.03845215,-0.009613037,-0.011291504,-0.051452637,-0.032104492,-0.011253357,0.0030021667,-0.052215576,0.00089120865,0.010276794,0.0050239563,0.03137207,-0.011184692,-0.0072402954,-0.0054512024,-0.021820068,-0.046203613,0.014411926,-0.044769287,-0.011398315,0.054504395,-0.01322937,-0.0059280396,0.0033035278,-0.006916046,0.004901886,0.008987427,0.029525757,-0.011253357,-0.042419434,0.03552246,0.015548706,-0.0021800995,0.020080566,0.044067383,0.019256592,0.033447266,0.04852295,0.018188477,-0.022506714,-0.055236816,0.036071777,-0.05822754,0.010314941,0.030197144,-0.017974854,-0.0031013489,-0.017654419,-0.017578125,-0.031219482,0.011917114,-0.033813477,0.0023479462,0.010032654,-0.01436615,-0.026412964,-0.05935669,-0.012786865,0.0037250519,0.06567383,0.027404785,0.0019569397,-0.057281494,0.0011882782,0.028213501,0.011070251,0.03704834,-0.014091492,-0.008544922,-0.016738892,-0.0357666,-0.014541626,-0.030578613,0.02633667,-0.014953613,-0.019592285,0.026687622,0.0033550262,0.016586304,0.012077332,0.010505676,0.01953125,-0.022216797,-0.0059509277,-0.0066070557,0.029220581,0.0057144165,-0.003774643,-0.04144287,0.03286743,0.012390137,0.017822266,-0.027801514,0.0051078796,-0.008285522,0.0082092285,0.01739502,-0.006790161,-0.01234436,-0.0037841797,-0.043762207,-0.050964355,0.045410156,-0.029678345,0.028259277,0.011940002,0.01574707,0.018310547,0.00017881393,0.0066871643,0.024124146,-0.021347046,-0.0038604736,-0.008201599,-0.017929077,-0.036621094,0.0019140244,-0.027053833,0.02633667,-0.022872925,0.015274048,-0.0037765503,-0.013175964,0.021728516,0.0001205802,-0.014053345,0.012260437,0.00050258636,0.020401001,0.034484863,0.0025997162,-0.045440674,0.015419006,0.006122589,0.0051116943,-0.0082092285,0.033111572,0.03253174,-0.019195557,-0.0045318604,-0.000051140785,-0.0058784485,-0.013618469,-0.0035266876,0.013290405,0.02420044,0.000100672245,-0.040161133,-0.0011014938,0.0076789856,-0.033569336,-0.02243042,0.012413025,0.0020103455,-0.03894043,0.02003479,0.029449463,0.053527832,-0.026565552,0.0074272156,0.015609741,0.0236969,0.014335632,0.0063095093,-0.004196167,0.021392822,-0.006252289,0.0032958984,-0.0022392273,0.0010528564,0.024475098,0.00033211708,0.013305664,0.030731201,0.007911682,-0.025253296,-0.039093018,0.0051841736,-0.018997192,-0.026641846,0.018234253,0.02053833,0.019348145,-0.025421143,0.018600464,0.015609741,-0.019073486,-0.017684937,-0.0023956299,0.037841797,-0.020248413,-0.016616821,0.008331299,0.009048462,0.03253174,-0.04522705,0.0022888184,-0.00374794,0.009483337,-0.023635864,-0.046020508,-0.042236328,0.012260437,0.03652954,0.010192871,0.015899658,0.043182373,0.008506775,0.009941101,0.026824951,0.009155273,-0.0075416565,-0.02432251,-0.043273926,-0.0115356445,-0.0028305054,-0.0104599,-0.029708862,0.018554688,-0.009635925,-0.035827637,0.009490967,-0.0087890625,-0.011886597,-0.00038576126,-0.009857178,0.02418518,0.0035591125,0.019042969,-0.01197052,-0.042755127,-0.0035705566,-0.000046491623,0.018920898,-0.04006958,0.022247314,-0.0062332153,-0.008979797,0.015213013,0.009094238,0.026153564,0.041931152,0.018325806,0.026489258,-0.0473938,0.045043945,-0.0446167,0.017059326,0.0026283264,-0.027908325,-0.004558563,-0.015068054,-0.009536743,0.036132812,-0.014984131,-0.0146102905,-0.024795532,-0.020996094,-0.014694214,-0.053741455,0.0024642944,0.04107666,0.02885437,-0.017608643,0.0038642883,0.002298355,-0.0027809143,-0.012077332,0.007873535,-0.0034103394,0.030166626,0.013420105,-0.00045967102,-0.033966064,-0.027252197,-0.023376465,0.0020198822,-0.0368042,-0.04473877,-0.0034255981,-0.003232956,-0.004207611,-0.026992798,-0.036956787,-0.033569336,0.003320694,-0.045288086,0.008415222,0.01739502,-0.0027236938,0.0036354065,-0.028900146,0.020736694,0.022857666,-0.025604248,0.03704834,-0.0040397644,-0.0013942719,-0.039154053,0.024551392,0.016067505,0.0079193115,-0.0057868958,-0.019485474,-0.011360168,-0.024383545,-0.05822754,0.002866745,-0.008369446,-0.009788513,0.0067443848,0.0079574585,-0.055908203,-0.0075302124,-0.01838684,0.015808105,0.014984131,0.009483337,0.008079529,-0.0001757145,0.015625,-0.0065345764,-0.00068855286,-0.032958984,0.022903442,0.010292053,-0.0058898926,0.02658081,0.05001831,0.0045280457,-0.01878357,0.008354187,0.018936157,0.020706177,-0.020874023,-0.006954193,-0.018692017,-0.002418518,-0.015602112,-0.027511597,-0.04147339,0.003452301,0.087890625,-0.004020691,-0.012626648,-0.0068855286,-0.023849487,0.016571045,0.04147339,-0.034729004,-0.008590698,-0.029754639,0.019088745,-0.023895264,0.011062622,0.00579834,0.0058288574,-0.014465332,-0.05053711,-0.019454956,0.008346558,-0.018844604,-0.06109619,-0.025390625,-0.06329346,-0.002565384,0.0012083054,-0.03062439,-0.008468628,0.0029392242,-0.013122559,-0.073913574,0.0029449463,0.04626465,0.00995636,0.0158844,-0.0020427704,0.022323608,0.027923584,-0.03781128,-0.017089844,0.025253296,-0.04058838,-0.015914917,-0.02671814,0.017349243,-0.014038086,-0.013214111,0.0022468567,0.0060043335,0.02508545,-0.015159607,0.00094270706,-0.018112183,0.018035889,-0.016998291,0.019104004,-0.01386261,0.0023593903,0.040008545,-0.031982422,0.01928711,0.019958496,-0.009765625,-0.006893158,0.021438599,0.035369873,-0.03955078,-0.022277832,0.014915466,0.009178162,0.039245605,-0.027236938,0.04333496,0.028701782,-0.031433105,0.023269653,-0.009895325,-0.018463135,-0.05569458,-0.030044556,0.015716553,-0.010871887,0.01473999,-0.028137207,0.020736694,0.016357422,-0.009643555,0.014915466,-0.014129639,-0.029388428,-0.03277588,0.000436306,-0.005405426,-0.01222229,-0.008224487,0.014709473,0.014320374,0.04837036,0.014953613,-0.0131073,0.0005054474,0.022460938,-0.010520935,0.0063209534,0.023101807,0.0030956268,0.007965088,0.017868042,0.0079193115,-0.053497314,-0.009002686,-0.012573242,-0.016738892,0.009521484,0.00365448,0.0072898865,-0.011108398,0.0005350113,-0.0058135986,-0.029159546,0.009223938,-0.020965576,-0.04055786,-0.000330925,-0.012161255,0.014762878,-0.009384155,0.0077934265,0.013923645,-0.008972168,0.05215454,-0.0030345917,-0.0066223145,0.019210815,0.04638672,0.010543823,-0.026321411,-0.017974854,-0.011886597,-0.00040102005,0.0049209595,-0.036834717,0.018493652,0.043945312,-0.028152466,0.015510559,0.007873535,0.038269043,-0.0043754578,0.0028038025,0.0011415482,0.02470398,-0.024108887,0.044769287,-0.043884277,0.02079773,0.006729126,0.01146698,-0.009155273,-0.013000488,-0.018554688,0.009086609,0.004386902,-0.02458191,0.056518555,-0.0022354126,0.028961182,-0.009277344,-0.02645874,0.007896423,-0.028961182,-0.02848816,0.02798462,-0.005760193,-0.0023174286,0.01576233,-0.008415222,0.04650879,-0.028366089,0.0034255981,0.0075302124,-0.00983429,-0.000019669533,-0.016906738,-0.005340576,-0.0015459061,-0.004295349,0.0067481995,0.0014867783,0.04562378,0.0051574707,0.036346436,0.043426514,0.025894165,0.0003297329,-0.034301758,-0.014984131,0.00088071823,-0.019989014,0.023361206,-0.008773804,0.056793213,0.036468506,0.0035495758,0.03363037,0.032043457,0.019515991,0.0075302124,0.008666992,-0.012214661,0.015548706,0.0030994415,0.025421143,0.0021572113,0.04208374,-0.029785156,0.032440186,0.011421204,0.02532959,-0.038635254,0.046722412,0.06463623,0.01864624,-0.019607544,0.043304443,-0.00894165,-0.0154953,-0.00434494,-0.0013179779,0.05899048,0.009178162,0.06085205,0.04055786,0.016983032,0.0047950745,0.031799316,-0.028213501,-0.027175903,0.060333252,0.030395508,-0.02583313,-0.01473999,-0.0050811768,0.005542755,-0.03778076,-0.03933716,0.023834229,-0.0020122528,-0.00969696,-0.011650085,-0.002035141,-0.007965088,0.013412476,0.009086609,0.0020332336,-0.01108551,0.020828247,0.039367676,-0.0055160522,0.027877808,0.007587433,0.046661377,-0.009529114,-0.037200928,0.017120361,0.023788452,-0.0041656494,-0.005268097,0.012626648,0.0076179504,0.039276123,0.03366089,-0.02609253,0.014930725,0.027359009,0.014259338,-0.0012407303,0.041290283,0.04559326,0.005458832,0.039276123,0.031555176,0.042236328,-0.022949219,0.0056610107,-0.009796143,-0.007522583,-0.0075683594,-0.0049858093,0.008460999,-0.017959595,0.0057907104,-0.009735107,-0.0075950623,0.023590088,0.03253174,0.0016517639,-0.00712204,-0.017807007,0.006389618,-0.013168335,0.003540039,0.018753052,-0.018661499,0.0335083,0.026138306,0.014671326,-0.022079468,0.029159546,-0.002861023,-0.024414062,0.005962372,0.019226074,-0.0357666,0.004058838,-0.0075035095,0.00730896,-0.049743652,0.016860962,0.031097412,-0.014205933,0.03262329,0.012123108,0.0013465881,-0.017242432,0.009902954,0.010238647,-0.005142212,-0.0035686493,-0.022033691,0.024871826,0.03692627,0.0009675026,0.00919342,-0.019592285,-0.0061569214,0.018997192,0.0047912598,0.0036849976,-0.0057144165,-0.019439697,-0.042907715,0.0018453598,0.038391113,0.024475098,0.049682617,-0.014854431,-0.0031719208,0.008583069,0.035980225,0.007835388,-0.00009959936,-0.00056934357,0.015853882,-0.013999939,0.045806885,0.038269043,0.010513306,0.03366089,-0.012413025,-0.033935547,0.010551453,0.0021343231,0.015266418,-0.0121154785,0.003610611,-0.011116028,0.018554688,-0.0036773682,-0.036590576,0.009681702,-0.022140503,-0.02911377,-0.01789856,0.011398315,0.0041618347,0.024719238,0.033416748,0.019485474,-0.01474762,0.06085205,-0.014450073,0.046417236,-0.0088272095,-0.0049743652,0.05239868,0.027175903,0.037872314,0.014282227,0.023864746,-0.037963867,0.020111084,0.03265381,0.024291992,0.007446289,0.009735107,-0.008338928,0.036224365,0.015686035,0.025527954,0.0004169941,-0.00274086,0.014183044,-0.009353638,-0.00554657,-0.0028018951,-0.022598267,0.003042221,0.034454346,-0.021331787,-0.0029392242,-0.029907227,-0.010559082,0.023712158,-0.014205933,0.0027561188,0.0006837845,-0.033966064,0.024017334,-0.02508545,-0.023223877,-0.0031166077,0.02848816,-0.04071045,-0.006046295,0.0064964294,0.015197754,-0.00969696,0.03326416,0.031585693,0.012840271,0.0008029938,0.04397583,-0.009109497,0.032806396,-0.0057144165,0.025756836,0.032592773,0.0041770935,-0.015029907,0.012077332,0.027572632,-0.008705139,0.0037879944,0.043304443,0.0025081635,0.0020256042,-0.0035324097,-0.0004491806,0.008224487,0.014953613,-0.00762558,0.013549805,-0.008552551,-0.009735107,0.0033950806,-0.00036239624,0.0072402954,0.009727478,-0.023101807,-0.017715454,0.0140686035,0.032562256,0.029785156,-0.02607727,0.0024776459,0.016326904,0.017349243,-0.02305603,-0.012588501,-0.00724411,-0.047668457,0.022079468,0.014801025,0.007457733,0.015655518,-0.018707275,-0.00907135,0.02583313,0.015930176,0.013656616,0.0017633438,-0.0074386597,0.01637268,-0.013000488,-0.00579834,-0.0062713623,-0.014862061,0.011726379,0.022323608,-0.005592346,-0.027664185,0.025985718,-0.0054092407,0.019607544,0.00004762411,-0.016738892,0.010688782,-0.018829346,-0.0093688965,0.003484726,0.015029907,-0.021499634,-0.014778137,-0.014556885,0.03186035,0.042755127,-0.0024604797,-0.0018787384,0.021392822,0.009483337,0.019973755,0.038146973,0.0035266876,0.032165527,0.024291992,-0.017593384,-0.025177002,0.025985718,-0.018310547,-0.03567505,0.012901306,-0.010826111,-0.01902771,0.029556274,0.011108398,-0.007160187,-0.032806396,-0.012252808,-0.008041382,-0.013343811,0.033203125,-0.0008878708,0.012825012,-0.011291504,-0.013580322,-0.00447464,-0.024368286,-0.055755615,-0.01876831,-0.0030727386,-0.010643005,-0.05508423,0.017608643,-0.033691406,0.02520752,-0.031219482,-0.008018494,-0.01625061,0.019989014,-0.0140686035,0.010971069,0.01411438,0.017486572,0.016952515,0.005088806,0.023269653,-0.028884888,-0.028442383,-0.023452759,0.008865356,-0.009429932,0.015548706,0.018722534,0.03982544,0.022613525,-0.0018310547,-0.0013685226,-0.015136719,-0.017807007,-0.014968872,-0.014015198,-0.020126343,0.016143799,0.011230469,-0.0040512085,-0.011245728,0.039123535,-0.028335571,-0.019317627,0.037719727,0.054626465,0.0073928833,0.035888672,-0.024154663,-0.012641907,-0.012199402,0.0079956055,-0.008934021,0.0026779175,0.016983032,0.009025574,-0.00472641,0.008850098,0.018966675,-0.007865906,-0.012748718,0.023986816,0.00058221817,-0.009147644,0.03918457,0.0054092407,0.009483337,-0.011177063,-0.013450623,0.016281128,0.05368042,0.020217896,0.018600464,-0.0046653748,-0.0044517517,-0.020935059,0.011543274,0.010314941,-0.02330017,-0.034729004,-0.026992798,-0.035064697,0.016662598,-0.0028495789,0.004322052,0.0013971329,0.025009155,-0.022491455,-0.011512756,-0.021255493,0.02268982,0.005962372,-0.01927185,-0.012634277,0.0008587837,0.026641846,-0.030090332,-0.0031776428,-0.031097412,-0.024597168,0.0065956116,-0.032592773,0.033569336,0.018676758,0.0022335052,-0.005996704,-0.0030326843,-0.00069093704,-0.012878418,0.023330688,-0.0072250366,-0.0045547485,0.018554688,0.019424438,-0.0231781,0.01473999,-0.0047912598,-0.0033454895,0.019836426,-0.01474762,0.012832642,-0.014160156,0.04019165,-0.003686905,0.009811401,0.044647217,-0.0020580292,0.016677856,-0.038238525,0.009811401,0.0043296814,-0.013786316,0.03845215,-0.03060913,-0.029968262,0.01184082,-0.023635864,-0.02607727,0.015640259,0.021316528,0.029632568,-0.0052108765,0.04446411,-0.0038795471,-0.010139465,0.024505615,0.010818481,-0.006591797,0.010505676,0.015151978,0.006374359,-0.005344391,-0.010574341,-0.0024223328,-0.024765015,-0.006717682,0.017837524,-0.00737381,-0.0104522705,0.01574707,0.012039185,0.03842163,-0.002998352,0.015991211,0.01525116,0.008125305,0.03225708,0.01638794,0.066223145,-0.02394104,-0.034729004,-0.00074625015,0.003528595,-0.024658203,-0.0071372986,-0.0073928833,-0.0066604614,-0.03555298,0.025054932,-0.0017309189,0.02027893,-0.02658081,0.015808105,-0.017730713,-0.0068206787,-0.043304443,-0.019546509,-0.030426025,0.013374329,0.027389526,-0.0039367676,0.023727417,0.014480591,-0.013534546,0.020050049,0.049560547,-0.0060043335,-0.041748047,-0.0054740906,0.012176514,0.00806427,0.0027217865,0.014205933,-0.022781372,-0.024505615,0.020690918,-0.017120361,0.0074768066,-0.000849247,0.016174316,0.003353119,0.0009646416,-0.0064048767,0.017913818,-0.0019035339,-0.006336212,0.01121521,0.008430481,0.043060303,0.02279663,0.0019083023,0.013450623,0.021270752,-0.034301758,0.05456543,-0.0051612854,0.016983032,-0.02154541,0.003250122,-0.032836914,-0.024993896,-0.002418518,0.0021400452],"createdAt":"2026-04-18T18:51:58.386Z","updatedAt":"2026-04-24T00:32:16.639Z","lastSeenAt":"2026-04-24T00:32:16.639Z","tsv":"'/api/v1/policies/25':64,162 '/request':15,34 '0.02':14,33,84,150 '000':79 '20':78 '6':91 'accept':54 'access':70,167 'across':109 'actual':178 'ai':119 'analysi':123 'analyt':113 'api':5,17,24,36,46,69,95,166,183 'base':8,27,59,80,158 'base network api' 'broader':105 'call':4,23 'categori':111 'charg':75 'classif':126 'commit':102 'connect':191 'content':197 'convers':143 'data':112,116,174 'decim':92 'describ':172 'detail':200 'doc':181 'document':171 'embed':127 'endpoint':63,108,146,161,209 'estim':137 'exact':205 'exampl':202 'exchang':132 'export':117 'feed':131 'financ':128 'four':110 'function':176 'gas':136 'generat':144 'geocod':141 'http-post' 'infrastructur':139 'insight':118 'json':73 'json-response' 'key':18,37,96 'label':164 'learn':121 'limit':99 'list':66 'low payment fee' 'lowpaymentfee.com':39 'machin':120 'metric':114 'micropayment api' 'network':60 'no-api-key' 'offer':107 'page':186 'particular':160 'pay':2,21,43 'pay per call api' 'pay-per-cal':1,20 'pay-per-request':42 'payment':11,30,56 'per':3,22,44,86,151 'platform':6,25,47,106 'premium':68,165 'premium api access' 'price':130,148,182 'prompt':193 'protocol':52 'purpos':206 'quot':135 'rate':98,133 'readm':185 'remain':210 'render':188 'report':115 'request':45,87,152 'requir':19,38,103 'respons':203 'return':72,179 'schema':199 'sentiment':122 'settl':154 'sinc':88 'specif':62 'substant':196 'summar':125 'text':124 'token':134 'unclear':211 'unit':81 'usd':85 'usdc':10,29,55,83,89,156 'usdc api' 'usdc-base' 'use':49,90 'util':140 'valid':142 'via':12,31,155 'wallet':192 'web3':129 'without':198 'x402':13,32,51 'x402 api' 'x402-payment'","prices":[{"id":"1e25549a-ffd5-4927-b9af-b02e483921ba","listingId":"dc5eee25-c125-4f65-8f19-794640dcc24d","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/25","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:51:58.386Z"}],"sources":[{"listingId":"dc5eee25-c125-4f65-8f19-794640dcc24d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/policies/25","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:51:58.386Z","lastSeenAt":"2026-04-24T00:32:16.639Z"}],"details":{"listingId":"dc5eee25-c125-4f65-8f19-794640dcc24d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/policies/25 \\\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 requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/policies/25"},{"claim":"maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/policies/25"},{"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":"Platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a premium API endpoint with per-call USDC micropayments","Agent-driven workflows that need keyless, on-demand API access settled on Base","Testing x402 payment flows against a live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need keyless pay-per-use API access","Low-volume consumers who want no subscription commitments"],"notFor":["Users who need detailed API documentation or response schemas before integrating","High-volume use cases where per-request crypto payments add overhead","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:02.574Z"},"updatedAt":"2026-04-24T00:32:16.639Z"}}