{"id":"cbc76ec7-9c6f-4f78-9210-42cb8ab5e9a8","shortId":"ucDaVA","kind":"x402","title":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-protocol API platform that gates access to a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint probed (/api/v1/orders/45) is labeled \"Premium API Access\" and requires a POST request with an x402 payment of up to 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals) on Base.\n\nThe broader platform advertises four categories of APIs: 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 listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\n\nDocumentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The endpoint is confirmed live via a valid 402 challenge, but the actual behavior and response format of each API remain undocumented in the crawled material.","tags":[],"capabilities":["x402-payment","usdc-base","per-request-micropayment","data-analytics","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","exchange-rates","gas-estimates","geocoding","validation","conversion"],"categories":["ai","data","finance","infrastructure"],"synonyms":["low payment fee","micropayment API","x402 API","pay-per-request API","USDC API","Base network API","cheap API access"],"warnings":["No OpenAPI or schema documentation available — all endpoint behaviors are undocumented","The /docs, /pricing, /api, and /README pages all render only 'Connect wallet' with no content","The specific endpoint /api/v1/orders/45 is not listed among the advertised APIs on the homepage — its purpose is unclear","No request body schema or response format is documented anywhere in the crawled material"],"endpointUrl":"https://lowpaymentfee.com/api/v1/orders/45","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/orders/45","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge and the landing page describes the platform's offerings and pricing. However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The specific endpoint (/api/v1/orders/45) has no documented purpose beyond the generic label 'Premium API Access'. 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":"2026-04-18T22:24:03.302Z","embedding":[-0.034332275,-0.028320312,0.02758789,0.011116028,0.009597778,-0.021743774,-0.0335083,0.022094727,0.058380127,-0.07183838,0.030197144,-0.056549072,-0.02696228,-0.033294678,-0.024490356,0.0044059753,-0.0043029785,0.004108429,-0.053009033,0.052703857,0.04168701,-0.01713562,-0.022628784,0.03161621,-0.014053345,-0.0074882507,0.01586914,-0.0056991577,-0.02305603,-0.03237915,0.038146973,-0.026504517,-0.012214661,0.017456055,0.0036354065,-0.011245728,-0.004337311,0.036834717,0.034057617,0.00070619583,-0.0046424866,-0.05215454,0.015289307,-0.01171875,-0.047332764,-0.014320374,0.0146102905,-0.031219482,-0.019439697,0.0030059814,-0.031707764,-0.00541687,-0.026397705,0.0181427,0.0124435425,0.014526367,-0.00831604,-0.011077881,0.0151901245,0.0093307495,-0.014823914,-0.057128906,-0.010643005,0.015609741,0.0010108948,0.048553467,-0.009254456,0.038238525,0.009468079,0.06744385,0.02960205,0.047332764,0.036987305,0.0005187988,0.014839172,-0.013084412,-0.010528564,0.05657959,-0.021347046,-0.022949219,-0.02508545,-0.016174316,-0.059509277,-0.021835327,-0.024963379,-0.076293945,-0.009185791,0.024673462,-0.03152466,0.03756714,-0.07287598,-0.0072364807,-0.01940918,0.015365601,-0.00007164478,-0.006088257,-0.008155823,0.017730713,0.004600525,0.012626648,0.00025629997,-0.057891846,0.008621216,0.010261536,0.051239014,0.039276123,0.0022029877,0.021194458,-0.0023097992,-0.008735657,-0.02420044,-0.002193451,-0.014022827,-0.009292603,0.018920898,0.007663727,-0.016708374,0.018295288,-0.031951904,0.018005371,-0.046722412,0.058929443,0.008842468,0.000729084,0.0024757385,-0.050933838,-0.023727417,-0.0050697327,-0.03970337,-0.017318726,0.02468872,0.006225586,0.028778076,-0.029052734,-0.028381348,0.008628845,-0.0033683777,-0.021484375,-0.04925537,-0.01600647,0.041778564,-0.0435791,0.01689148,0.02658081,-0.09552002,0.00086545944,-0.05706787,0.0140686035,-0.022781372,-0.0019264221,0.014770508,0.014472961,-0.025131226,-0.029434204,-0.01776123,-0.026947021,-0.022323608,0.03475952,-0.0068626404,0.027297974,-0.01763916,0.03137207,0.014717102,0.0037269592,0.008705139,0.03387451,-0.018585205,-0.09161377,-0.09283447,-0.04055786,-0.0052757263,-0.0137786865,-0.025527954,-0.010574341,-0.0065574646,-0.08258057,-0.031829834,-0.010818481,-0.006439209,-0.038085938,-0.014434814,-0.025985718,0.011291504,-0.02494812,-0.04083252,-0.01713562,-0.037017822,0.062683105,0.011993408,0.015014648,0.013435364,0.005771637,0.061157227,0.037353516,0.0051612854,-0.025924683,0.0012111664,-0.024154663,0.049041748,-0.0021476746,0.013572693,-0.029296875,0.045013428,0.053253174,-0.008026123,-0.029815674,0.012008667,-0.040771484,-0.042877197,-0.026641846,0.014144897,0.006298065,-0.02519226,0.0259552,-0.038024902,-0.036712646,-0.011779785,0.0018987656,0.02078247,0.07165527,0.013999939,0.0028877258,0.017654419,0.015853882,-0.048583984,0.057037354,0.03253174,0.008529663,-0.02456665,-0.02432251,0.030166626,0.037139893,-0.03161621,0.010787964,-0.021347046,0.021621704,-0.0048446655,-0.006198883,0.026626587,-0.025497437,-0.017700195,-0.024093628,-0.01486969,0.03161621,0.016235352,-0.030059814,-0.03704834,-0.071899414,0.03555298,0.04751587,0.029190063,-0.0076293945,-0.011291504,-0.027832031,-0.00349617,-0.07043457,0.05316162,0.07434082,-0.006668091,-0.017196655,0.021255493,0.013244629,-0.022644043,-0.003929138,0.005252838,-0.019104004,-0.0181427,0.01940918,-0.04348755,-0.010658264,0.029510498,0.019073486,0.042297363,-0.021011353,-0.050750732,-0.026672363,-0.0016860962,0.0014076233,-0.041015625,-0.0005803108,0.00012886524,0.013412476,0.051849365,0.0008749962,0.017486572,0.00063991547,0.019363403,-0.009902954,-0.008956909,-0.028671265,-0.01676941,0.018997192,0.009819031,-0.07434082,0.020828247,-0.003791809,0.07128906,-0.04727173,0.03289795,-0.017990112,0.029006958,0.046325684,-0.009384155,-0.032592773,0.0014038086,0.026107788,0.026779175,0.03137207,0.008224487,-0.009963989,-0.01309967,0.059783936,-0.015571594,0.0027370453,-0.0022945404,0.02961731,0.039642334,0.004146576,-0.054138184,-0.043426514,0.00075912476,-0.04196167,0.032714844,-0.030197144,0.03024292,-0.013534546,0.011116028,-0.024230957,0.0062828064,-0.044677734,0.0054244995,-0.013450623,0.0035095215,-0.0061912537,-0.03237915,0.00712204,0.020523071,-0.01838684,0.012306213,0.040039062,0.01398468,-0.007255554,-0.03515625,-0.022567749,-0.017547607,-0.019683838,0.0048675537,0.025848389,0.021102905,0.04083252,-0.03564453,-0.0024166107,0.016113281,0.002401352,0.042388916,-0.01651001,0.01259613,-0.06329346,-0.042785645,-0.019805908,-0.032836914,0.026535034,0.027557373,0.0012073517,0.04446411,0.00630188,-0.020187378,-0.039123535,0.012763977,-0.03753662,0.0006623268,0.029403687,-0.014381409,-0.044647217,-0.0016021729,0.0002462864,0.015853882,0.03427124,0.023040771,0.016647339,0.070007324,0.024276733,0.020462036,0.02432251,0.007255554,0.03201294,0.0043563843,-0.013198853,-0.036132812,-0.0075416565,0.019973755,-0.036254883,-0.012748718,-0.055999756,0.04736328,0.036254883,0.090270996,0.0046195984,0.008232117,0.031585693,-0.014434814,0.0034694672,-0.023849487,-0.020385742,-0.034240723,-0.040222168,0.029434204,-0.007183075,-0.0031356812,-0.025543213,0.02935791,0.00013017654,0.012588501,-0.024093628,0.04550171,-0.018249512,-0.00667572,-0.00002849102,0.01600647,0.054779053,0.044189453,-0.051940918,0.011749268,0.025772095,-0.033172607,-0.0014095306,0.033966064,-0.008544922,-0.01737976,-0.060821533,-0.041107178,-0.019317627,-0.017929077,-0.05291748,0.0005726814,-0.00009691715,0.034698486,0.012145996,-0.004802704,-0.01777649,-0.0022525787,-0.014892578,-0.055358887,-0.008506775,-0.05407715,0.00081682205,0.027572632,-0.028671265,-0.0020961761,-0.013160706,-0.0072898865,-0.013145447,0.018798828,0.01713562,-0.0030155182,-0.04473877,0.03439331,0.00073480606,0.0059928894,0.032409668,0.038208008,0.053497314,0.0030899048,0.052001953,0.007873535,-0.02078247,-0.054229736,0.0059394836,-0.043701172,-0.0017528534,0.002500534,-0.021850586,-0.010848999,-0.02218628,-0.028808594,-0.016479492,0.017852783,-0.024047852,0.0006427765,0.02696228,-0.04534912,-0.028427124,-0.07092285,-0.023284912,-0.008934021,0.08312988,0.0124435425,-0.0059776306,-0.05053711,-0.015174866,0.018493652,-0.012329102,0.03262329,-0.01586914,-0.011703491,-0.015220642,-0.04647827,-0.026153564,-0.03186035,0.043670654,0.00001937151,-0.0044059753,0.0042533875,-0.0030212402,0.019561768,-0.013946533,-0.010429382,0.020019531,-0.0138549805,-0.013267517,-0.025772095,0.01171875,0.010414124,0.0031280518,-0.027130127,0.054107666,0.018310547,0.047943115,-0.039123535,-0.0026607513,-0.0087509155,0.021102905,0.026611328,-0.025238037,-0.008285522,0.00040578842,-0.03152466,-0.060180664,0.037963867,-0.01979065,0.012557983,0.0054626465,0.00945282,0.034820557,-0.02178955,0.020187378,0.018508911,-0.03378296,-0.010292053,-0.026504517,-0.033843994,-0.014160156,0.0044136047,-0.021697998,0.02204895,-0.016662598,-0.00053977966,-0.01512146,-0.0236969,0.041900635,0.02557373,-0.0035877228,0.027526855,0.007621765,0.027175903,0.0546875,0.009727478,-0.041137695,0.027542114,-0.003408432,0.0013103485,-0.004306793,0.057617188,0.024765015,-0.018508911,-0.016693115,-0.010322571,-0.012130737,-0.026611328,-0.013031006,0.0071754456,0.02217102,0.00655365,-0.029190063,0.0104522705,0.008857727,-0.017028809,-0.019836426,0.021408081,0.010734558,-0.03918457,0.024765015,0.029571533,0.055114746,-0.02355957,0.003211975,0.0055770874,0.045898438,0.033050537,0.0045433044,-0.01234436,0.009353638,-0.013725281,0.007133484,-0.004764557,-0.010559082,0.018539429,0.001791954,0.01725769,0.031082153,0.024261475,-0.03817749,-0.037078857,0.010055542,-0.011199951,-0.029006958,0.035736084,0.021209717,0.017745972,-0.02281189,0.030899048,0.02281189,-0.028274536,-0.017288208,-0.019073486,0.052856445,-0.012649536,0.00041604042,0.033172607,-0.0039978027,0.021011353,-0.047210693,-0.010246277,0.012687683,0.021713257,-0.020874023,-0.04800415,-0.037902832,-0.011810303,0.03137207,0.0055007935,0.013648987,0.020050049,0.0032844543,0.0050239563,0.02355957,-0.0033073425,-0.0047035217,-0.011100769,-0.05935669,-0.02279663,-0.007133484,0.0026435852,-0.030944824,0.02128601,-0.017807007,-0.021636963,-0.0026569366,-0.01763916,-0.00667572,-0.01737976,0.0073432922,0.029891968,0.003993988,0.02217102,-0.020339966,-0.026168823,0.0027122498,0.0056037903,0.026107788,-0.04208374,0.014839172,-0.0023269653,-0.0038375854,-0.011886597,0.017333984,0.019042969,0.021530151,0.011627197,0.042388916,-0.026016235,0.034057617,-0.030517578,0.01727295,-0.0059776306,-0.041778564,-0.017501831,-0.033966064,-0.016067505,0.039855957,-0.028884888,0.00024867058,-0.021102905,-0.03161621,-0.014701843,-0.04663086,0.013298035,0.032196045,0.038604736,-0.026565552,-0.0016040802,0.019104004,0.014175415,-0.018997192,0.0028133392,-0.009262085,0.027923584,0.022384644,-0.0022735596,-0.01322937,-0.020431519,-0.0074272156,0.00049495697,-0.05050659,-0.052642822,-0.018356323,-0.00027513504,-0.0031318665,-0.007949829,-0.028518677,-0.029647827,0.0035095215,-0.028915405,0.014541626,0.003665924,0.013412476,0.0073509216,-0.027114868,0.005882263,0.023513794,-0.030899048,0.025360107,-0.0041923523,-0.016860962,-0.05340576,0.0062179565,0.033843994,0.019210815,-0.008087158,-0.042114258,0.0004119873,-0.019805908,-0.048461914,-0.0051345825,-0.015716553,0.0067329407,0.0035743713,0.00484848,-0.05102539,-0.012214661,-0.030197144,0.0014019012,0.016937256,0.021499634,0.004058838,-0.008880615,0.0075263977,0.0023956299,-0.0071754456,-0.034210205,0.0018177032,0.01184845,-0.006919861,0.0262146,0.044830322,-0.0075683594,-0.01612854,-0.007041931,0.009475708,0.025299072,-0.022033691,0.007873535,-0.029220581,0.014282227,-0.0020446777,-0.016540527,-0.042755127,-0.0059280396,0.06726074,0.00064229965,0.013137817,-0.0004310608,-0.008918762,0.018295288,0.031188965,-0.04083252,-0.007583618,-0.018692017,0.0206604,-0.028884888,0.0010156631,-0.008049011,0.021850586,-0.014564514,-0.05859375,-0.002046585,0.014015198,0.00013399124,-0.06726074,-0.023406982,-0.068481445,0.00007945299,-0.018096924,-0.027679443,-0.0009121895,0.0048065186,-0.019592285,-0.076416016,0.009918213,0.05831909,0.003189087,0.026947021,-0.008018494,0.0234375,0.03845215,-0.019470215,-0.013542175,0.0107421875,-0.025146484,-0.022460938,-0.03265381,0.034301758,-0.007068634,-0.012283325,0.013870239,0.020858765,0.022247314,-0.0005145073,0.017929077,-0.009376526,0.017990112,-0.0048179626,0.012802124,-0.0067749023,-0.006587982,0.02835083,-0.049346924,0.031036377,0.006389618,-0.0016956329,0.000057518482,0.022872925,0.029220581,-0.04257202,-0.011512756,0.030059814,0.018417358,0.027893066,-0.019927979,0.04473877,0.01966858,-0.008987427,0.011077881,-0.0082092285,-0.027191162,-0.041290283,-0.052215576,0.025146484,0.009643555,0.013824463,-0.0068244934,-0.00033020973,0.018096924,0.006072998,0.003068924,-0.022583008,-0.023422241,-0.030410767,0.01675415,0.004497528,0.0019569397,0.009178162,0.024261475,0.03543091,0.03869629,0.00019538403,-0.0055503845,0.009124756,0.032226562,-0.016464233,-0.0023994446,0.021987915,0.01007843,0.01612854,0.02029419,0.025054932,-0.052703857,-0.026901245,-0.01991272,-0.016235352,0.0014419556,-0.009475708,-0.0038490295,-0.005340576,0.005962372,-0.011070251,-0.041046143,0.0045280457,-0.032348633,-0.023666382,-0.0064849854,-0.016540527,0.023727417,0.018234253,-0.009963989,-0.0028877258,-0.0049819946,0.059509277,-0.005924225,-0.008926392,0.025375366,0.044708252,0.027313232,-0.028320312,-0.0035495758,-0.013000488,-0.015068054,0.007194519,-0.016860962,0.0107421875,0.040130615,-0.01739502,0.0053215027,0.002204895,0.021728516,-0.0044822693,0.0087509155,-0.01234436,0.018447876,-0.015686035,0.039642334,-0.058441162,0.0028915405,0.015792847,0.011993408,-0.0013046265,-0.017547607,-0.024246216,0.021652222,0.002445221,-0.0047073364,0.045074463,-0.008926392,0.02658081,-0.02468872,-0.028869629,0.009521484,-0.012535095,-0.034362793,0.027694702,-0.010192871,0.002445221,0.0146865845,-0.023376465,0.021377563,-0.028396606,0.0067749023,0.018569946,-0.0028095245,-0.013511658,-0.010345459,-0.0029525757,-0.009811401,-0.014808655,-0.008018494,-0.0035305023,0.037902832,0.026901245,0.018569946,0.032348633,0.018371582,0.017745972,-0.039367676,-0.01727295,-0.000084519386,-0.016845703,0.01386261,-0.025939941,0.034088135,0.04611206,0.013595581,0.033477783,0.03668213,0.031982422,-0.0050735474,0.008613586,-0.015594482,0.029159546,-0.029296875,0.019927979,-0.0010318756,0.047790527,-0.03781128,0.01259613,-0.0011968613,0.018692017,-0.010887146,0.028167725,0.06500244,0.029510498,0.0003681183,0.034606934,-0.010391235,0.0013074875,-0.009757996,-0.017593384,0.056152344,0.0059509277,0.04522705,0.028839111,0.0032215118,-0.009239197,0.024978638,-0.029266357,-0.0206604,0.044036865,0.032989502,-0.03286743,-0.00008749962,-0.003622055,0.010169983,-0.032714844,-0.0231781,0.018432617,0.005958557,0.007534027,-0.010520935,-0.007843018,-0.023925781,0.014083862,0.016220093,0.008323669,-0.010673523,0.008956909,0.021484375,-0.004573822,0.027923584,0.0022735596,0.034362793,-0.023376465,-0.019195557,0.010513306,0.014350891,0.0037498474,0.0014228821,0.022125244,0.017501831,0.035247803,0.027374268,-0.020629883,-0.0053749084,0.0211792,0.022216797,0.003604889,0.044921875,0.039611816,0.013801575,0.045654297,0.04421997,0.023925781,-0.026397705,0.009468079,-0.009811401,0.0053138733,-0.0152282715,-0.022460938,0.012252808,-0.0069122314,0.015930176,0.005607605,-0.0029792786,0.024841309,0.017715454,-0.0070114136,0.008148193,-0.004070282,0.015930176,-0.013252258,-0.0019817352,0.022232056,-0.01020813,0.023880005,0.021133423,0.032562256,-0.02746582,0.027435303,0.0007658005,-0.028396606,-0.0005927086,0.0061531067,-0.034851074,-0.0015983582,-0.004627228,-0.014015198,-0.03652954,0.0048446655,0.029953003,-0.01852417,0.024169922,0.0135650635,-0.011276245,-0.012260437,0.027160645,0.024978638,-0.01626587,-0.0065231323,-0.021255493,0.023101807,0.047821045,0.006580353,-0.0073432922,-0.017623901,0.0035495758,0.0058021545,-0.015701294,0.0028133392,0.0068626404,-0.011375427,-0.015289307,0.018234253,0.025619507,0.0256958,0.03152466,-0.018096924,-0.011482239,0.003578186,0.030456543,0.008972168,0.0031414032,-0.0002834797,0.028518677,-0.023086548,0.040985107,0.03149414,-0.0010786057,0.022338867,-0.0067596436,-0.005443573,0.009338379,-0.018692017,0.014526367,-0.021957397,0.010879517,-0.00793457,0.02949524,-0.016418457,-0.046295166,0.0025844574,-0.01322937,-0.021270752,-0.026138306,0.016784668,-0.00021982193,0.02178955,0.038879395,0.034454346,-0.03100586,0.06335449,-0.021331787,0.047546387,-0.007949829,-0.013168335,0.068115234,0.032714844,0.03982544,0.011024475,0.010154724,-0.022125244,0.0065307617,0.033294678,0.025054932,0.00819397,0.0013456345,-0.0077056885,0.03845215,-0.007949829,0.038146973,0.0031909943,0.008049011,0.0066490173,-0.00844574,-0.015411377,-0.007209778,-0.0066604614,0.0058288574,0.06707764,-0.013313293,-0.012504578,-0.028381348,-0.019424438,0.027496338,-0.013847351,-0.00014054775,0.0014657974,-0.021255493,0.007446289,-0.03262329,-0.009284973,0.022064209,0.028945923,-0.05999756,-0.014663696,0.017990112,0.0317688,-0.03427124,0.024414062,0.019439697,-0.0034618378,0.015541077,0.043548584,-0.0023860931,0.03515625,-0.0076141357,0.027496338,0.037902832,0.01576233,-0.017654419,0.009109497,0.007972717,-0.008865356,0.010932922,0.028671265,-0.01247406,0.005355835,-0.006111145,0.0020809174,-0.0019311905,0.018508911,-0.0146865845,0.005958557,-0.004070282,-0.0073242188,0.008979797,-0.0003888607,0.004573822,0.005630493,0.0027942657,-0.0103302,0.014579773,0.031463623,0.020950317,-0.037384033,0.0049743652,0.020202637,0.0005464554,-0.018081665,-0.0209198,-0.0107803345,-0.030166626,0.012214661,0.026489258,0.016357422,0.009483337,-0.025131226,0.002527237,0.029754639,0.0112838745,0.0044403076,-0.0004930496,-0.017654419,0.0099487305,-0.016494751,-0.0060157776,-0.011177063,-0.015625,0.009963989,0.021942139,-0.014350891,-0.026565552,0.01914978,-0.0022583008,0.006629944,-0.0076293945,-0.0015954971,0.021118164,-0.009353638,-0.008163452,0.005622864,0.01184082,-0.0017747879,-0.0115356445,-0.020874023,0.038146973,0.058380127,-0.021240234,-0.005344391,0.008674622,0.015640259,0.01701355,0.03866577,0.017562866,0.039520264,0.01802063,-0.0061187744,-0.035736084,0.023406982,-0.011619568,-0.02293396,0.021011353,-0.012260437,-0.009529114,0.021453857,0.00056123734,-0.0037498474,-0.024749756,-0.016921997,-0.012580872,-0.024337769,0.027420044,-0.005214691,0.022247314,-0.03213501,-0.0052604675,0.018356323,-0.020812988,-0.04034424,-0.016571045,-0.005859375,-0.015449524,-0.052642822,0.0036888123,-0.025100708,0.0059127808,-0.02470398,0.006111145,-0.009468079,0.027313232,-0.01058197,-0.0019664764,0.0056114197,0.028640747,0.012496948,-0.0016880035,0.017868042,-0.016830444,-0.0128479,-0.028381348,-0.00003516674,-0.006614685,0.018585205,-0.011138916,0.045196533,0.014320374,-0.01600647,-0.002008438,-0.010894775,-0.012573242,-0.016448975,-0.024673462,-0.026184082,0.011772156,0.026382446,-0.007587433,-0.0005760193,0.03552246,-0.016235352,-0.014091492,0.0141067505,0.033203125,0.010597229,0.03387451,-0.011207581,0.00008267164,-0.021942139,-0.0010318756,-0.0010309219,0.0064048767,0.015640259,-0.005218506,-0.00040221214,-0.0011692047,0.022735596,-0.014595032,-0.01247406,0.026306152,0.016662598,-0.0071411133,0.055267334,0.021621704,0.0093688965,-0.01574707,-0.0146484375,0.026535034,0.05517578,0.014228821,0.016067505,-0.0006375313,0.001958847,-0.007709503,0.010375977,0.012870789,-0.020141602,-0.039276123,-0.013298035,-0.036224365,0.025009155,0.0046577454,0.004234314,-0.01322937,0.014297485,-0.009796143,-0.02999878,-0.02027893,0.033599854,0.005580902,-0.03274536,-0.0050468445,0.0079422,0.00983429,-0.029846191,-0.0072021484,-0.05065918,-0.028701782,-0.031341553,-0.01499939,0.022949219,0.008842468,-0.0052375793,0.006313324,0.004524231,-0.009017944,-0.0015144348,0.022201538,-0.0046157837,0.006259918,0.01713562,0.019348145,-0.02267456,0.0140686035,-0.007671356,-0.010261536,0.009239197,-0.015083313,0.028030396,-0.020523071,0.031188965,0.010398865,-0.011299133,0.022705078,0.00630188,0.026382446,-0.032043457,-0.0037403107,-0.0030002594,0.00308609,0.037963867,-0.011238098,-0.018447876,0.008842468,-0.017791748,-0.026428223,0.0070343018,0.020324707,0.022384644,-0.019485474,0.04727173,-0.010932922,-0.0028076172,0.012306213,0.016571045,-0.012931824,0.009643555,0.035980225,-0.0032291412,0.0058135986,-0.0017652512,-0.0077056885,-0.030166626,-0.0135650635,0.009155273,-0.011871338,-0.015731812,0.025344849,0.013961792,0.051818848,-0.012992859,0.01763916,0.02017212,-0.003107071,0.039154053,0.0025024414,0.04107666,0.009422302,-0.026824951,-0.0073776245,0.006778717,-0.01914978,0.00945282,0.0022087097,0.010032654,-0.02684021,0.0040893555,0.003648758,0.027862549,-0.025726318,0.008110046,-0.020889282,-0.014038086,-0.036956787,0.0006990433,-0.035980225,0.003435135,0.041381836,0.015541077,0.020263672,0.00010091066,-0.025436401,0.035949707,0.055236816,0.012565613,-0.03845215,-0.012779236,0.0005903244,-0.003112793,-0.013496399,0.010513306,-0.021636963,-0.010894775,-0.0045661926,-0.013839722,-0.0016241074,-0.016586304,0.027557373,0.010543823,-0.0037784576,-0.010688782,0.020645142,-0.003622055,-0.0011377335,0.005569458,-0.010536194,0.034179688,0.03427124,-0.018707275,0.015327454,0.018814087,-0.03817749,0.06173706,-0.013122559,0.019012451,-0.009674072,0.016937256,-0.038024902,-0.018951416,-0.009811401,0.010414124],"createdAt":"2026-04-18T18:36:05.267Z","updatedAt":"2026-04-22T23:00:57.012Z","lastSeenAt":"2026-04-22T23:00:57.012Z","tsv":"'/api':167 '/api/v1/orders/45':67 '/docs':166 '/pricing':168 '/readme':170 '/request':17,34 '0.02':16,33,92,146 '000':86 '20':85 '402':209 '6':96 'Base network API' 'USDC API' 'access':45,72 'actual':213 'advertis':103 'ai':10,27,115 'ai-inference' 'analysi':119 'analyt':109 'api':4,21,41,71,107,151,220 'avail':197 'base':7,24,61,87,99 'behavior':214 'behind':51 'broader':101 'categori':105 'challeng':210 'cheap API access' 'classif':122 'classification' 'commit':159 'confirm':204 'connect':176 'convers':139 'conversion' 'crawl':200,225 'data':9,26,108,112 'data-analytics' 'decim':97 'detail':183 'document':161,192 'embed':123 'embeddings' 'endpoint':14,31,50,65,142,202 'estim':133 'exampl':196 'exchang':128 'exchange-rates' 'export':113 'extrem':163 'feed':127 'financ':11,28,124 'finance-data' 'format':217 'four':104 'gas':132 'gas-estimates' 'gate':3,20,44 'generat':140 'geocod':137 'geocoding' 'given':93 'i.e':91 'infrastructur':135 'insight':114 'key':152 'label':69 'learn':117 'limit':155 'list':144 'live':205 'low payment fee' 'lowpaymentfee.com':35 'machin':116 'materi':226 'metric':110 'micropay':55 'micropayment API' 'minimum':158 'network':62 'offer':8,25 'openapi':187 'page':171 'pay-per-request API' 'payment':81 'per':53,147 'per-request':52 'per-request-micropayment' 'platform':5,22,42,102 'post':76 'premium':70 'price':126 'probe':66 'prompt':178 'protocol':40 'quot':131 'rate':129,154 'remain':221 'render':173 'report':111 'request':54,77,148 'request/response':190 'requir':74,160 'respons':216 'schema':191 'sentiment':118 'sentiment-analysis' 'settl':56 'spars':164 'spec':188 'specif':64 'summar':121 'technic':182 'text':120 'text-summarization' 'token':130 'undocu':222 'unit':88 'usag':195 'usdc':58,90,94 'usdc-base' 'util':13,30,136 'valid':138,208 'validation' 'varieti':48 'via':206 'wallet':177 'web3':125 'x402':2,19,39,80 'x402 API' 'x402-gated':1,18 'x402-payment' 'x402-protocol':38","prices":[{"id":"cb551297-12ac-4e35-87c4-c386772e8d04","listingId":"cbc76ec7-9c6f-4f78-9210-42cb8ab5e9a8","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/orders/45","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:36:05.267Z"}],"sources":[{"listingId":"cbc76ec7-9c6f-4f78-9210-42cb8ab5e9a8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/orders/45","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:05.267Z","lastSeenAt":"2026-04-22T23:00:57.012Z"}],"details":{"listingId":"cbc76ec7-9c6f-4f78-9210-42cb8ab5e9a8","quickStartSnippet":"# The endpoint requires an x402 X-PAYMENT header with USDC on Base.\n# Use an x402-compatible client to pay $0.02 per request.\ncurl -X POST https://lowpaymentfee.com/api/v1/orders/45 \\\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":"The endpoint returns a 402 challenge requiring up to 20,000 base units of USDC (asset 0x8335…) on Base","source_url":"https://lowpaymentfee.com/api/v1/orders/45"},{"claim":"All listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure API categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) without API key management","Fetching real-time financial data such as token quotes, exchange rates, and gas estimates via micropayments","Running data analytics queries and exporting data on a pay-per-use basis","Using utility services like geocoding, validation, and format conversion with no subscription"],"bestFor":["Agents or developers who want keyless, pay-per-call API access on Base","Low-volume or bursty workloads where subscription pricing is wasteful","Web3-native applications that can settle USDC micropayments on Base"],"notFor":["High-volume production workloads where $0.02/request adds up significantly","Users who need detailed API documentation, SDKs, or guaranteed SLAs before integrating","Users without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:48.885Z"},"updatedAt":"2026-04-22T23:00:57.012Z"}}