{"id":"0c6ebd6f-1ae1-457f-bd5e-931ebf049c64","shortId":"LF8cRZ","kind":"x402","title":"Pay-per-request API platform on Base via x402 — analytics, AI, finance, and utility endpoints at $0.02/call.","tagline":"Pay-per-request API platform on Base via x402 — analytics, AI, finance, and utility endpoints at $0.02/call.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of pay-per-request 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, paid in USDC on the Base network.\n\nThe specific endpoint `/api/v1/orders/99` is listed as \"Premium API Access\" and returns a 402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02. Payment is handled via the x402 exact scheme with no API keys, no rate limits, and no signup required — callers simply attach an X-PAYMENT header with a valid payment proof.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no additional technical content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material. The exact functionality behind the `/api/v1/orders/99` endpoint is unclear — the name \"Premium API Access\" and the path suggest an order-retrieval or order-related resource, but no schema or sample payloads were found.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-base","analytics-api","ai-inference","sentiment-analysis","text-summarization","classification","embeddings","finance-data","geocoding","no-api-key","no-rate-limits"],"categories":["api-platform","ai","finance","data"],"synonyms":["low payment fee","x402 api","pay per call api","micropayment api","base usdc api","lowpaymentfee","402 payment api"],"warnings":["No OpenAPI or schema documentation available — all /docs, /pricing, /api, /README pages return only a wallet-connect prompt","The exact purpose and expected request body for /api/v1/orders/99 ('Premium API Access') is undocumented","No example requests or responses could be found in crawled material","The breadth of advertised endpoints (16+ across 4 categories) could not be independently verified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/orders/99","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/99","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and the specific purpose of /api/v1/orders/99 is ambiguous. 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":"2026-04-18T21:17:18.732Z","embedding":[-0.021469116,-0.032104492,0.02822876,-0.0067367554,0.020858765,-0.0385437,-0.044525146,0.03427124,0.05227661,-0.07208252,0.020187378,-0.044921875,-0.020050049,-0.037261963,-0.0064353943,0.015510559,0.007881165,-0.009666443,-0.044006348,0.050750732,0.028518677,-0.013320923,-0.03048706,0.0018119812,-0.012031555,-0.029174805,0.0062217712,-0.008468628,-0.017700195,-0.045654297,0.037322998,-0.028137207,-0.0028381348,0.012756348,-0.006717682,-0.022979736,-0.0055732727,0.046417236,0.028152466,-0.0027122498,-0.0041656494,-0.046813965,0.010169983,-0.0030403137,-0.052124023,0.004306793,0.018463135,-0.0284729,-0.015312195,0.006919861,-0.050109863,0.01209259,-0.020385742,0.018829346,0.0104522705,0.025985718,-0.015457153,0.009094238,0.002084732,0.017028809,-0.010826111,-0.057037354,-0.022094727,0.004676819,-0.0017776489,0.060394287,-0.016464233,0.031707764,0.017333984,0.051879883,0.027236938,0.047790527,0.02961731,-0.0037555695,0.027130127,-0.0034770966,0.0014781952,0.062347412,-0.010108948,-0.027816772,-0.025390625,-0.02192688,-0.03741455,-0.00932312,-0.0069007874,-0.061187744,-0.01322937,0.0234375,-0.027236938,0.015426636,-0.06842041,0.0001026392,-0.0051231384,0.0071907043,0.0076560974,-0.013320923,-0.0132751465,0.02909851,-0.024887085,0.017913818,-0.014770508,-0.054748535,0.00010967255,0.023635864,0.033935547,0.06036377,0.007896423,0.02355957,0.005256653,-0.023605347,-0.03552246,0.014877319,-0.020004272,-0.014945984,0.01008606,0.015602112,-0.02305603,0.017456055,-0.03488159,0.019210815,-0.05630493,0.04031372,0.018127441,-0.00030207634,-0.011459351,-0.051330566,-0.01574707,-0.006046295,-0.017852783,-0.014274597,0.023391724,0.014823914,0.017959595,-0.027008057,-0.02909851,-0.0016956329,0.008018494,-0.0073013306,-0.04119873,-0.024002075,0.02708435,-0.04147339,0.020645142,0.035980225,-0.09307861,-0.016601562,-0.046844482,-0.016677856,-0.024505615,-0.02017212,-0.0062217712,0.011878967,-0.031707764,-0.033935547,-0.01461792,-0.030731201,0.005241394,0.019546509,-0.016220093,0.035736084,-0.017242432,0.029525757,0.0065193176,0.0016860962,0.018157959,0.032165527,-0.004951477,-0.07867432,-0.08685303,-0.027862549,-0.017593384,-0.0068626404,-0.031219482,-0.013465881,0.010353088,-0.04928589,-0.011108398,-0.009277344,-0.0046844482,-0.04864502,-0.00447464,-0.017807007,0.009094238,-0.0044288635,-0.04623413,-0.016601562,-0.045776367,0.066345215,0.007446289,0.02897644,0.022369385,0.005340576,0.05731201,0.02784729,0.0038967133,-0.026153564,0.012451172,-0.008003235,0.026062012,0.0074310303,0.011444092,-0.029708862,0.038879395,0.07196045,-0.008308411,-0.022415161,-0.0006570816,-0.05432129,-0.04135132,-0.03152466,0.020629883,0.010673523,0.00016593933,0.01838684,-0.03451538,-0.04824829,-0.014915466,0.015205383,0.01448822,0.06384277,0.005973816,-0.011138916,0.022827148,0.01499939,-0.03729248,0.040985107,0.051849365,0.01374054,-0.030593872,-0.024291992,0.02810669,0.04119873,-0.012084961,0.01914978,-0.017807007,0.036621094,-0.012466431,0.033172607,0.011871338,-0.018753052,-0.0075569153,-0.01789856,-0.007949829,0.017044067,0.02357483,-0.032440186,-0.045532227,-0.064453125,0.048828125,0.038635254,0.035461426,-0.002401352,-0.0096588135,-0.03604126,-0.015060425,-0.075683594,0.04437256,0.074157715,0.002483368,0.0042915344,0.016906738,0.01537323,-0.024261475,0.007785797,0.00982666,-0.022109985,-0.016189575,-0.0042877197,-0.056640625,0.009750366,0.012496948,0.026184082,0.053131104,-0.022369385,-0.051605225,-0.007835388,0.0047454834,-0.0022830963,-0.023147583,-0.0031032562,-0.002817154,0.00088882446,0.039520264,-0.0032291412,0.02230835,0.0058403015,0.023101807,-0.0014572144,-0.00724411,-0.025238037,-0.03427124,-0.0001885891,-0.0030593872,-0.07409668,0.006843567,-0.005382538,0.078063965,-0.04083252,0.04269409,-0.0071372986,0.023956299,0.026977539,0.0046653748,-0.02999878,0.0256958,0.02229309,0.017745972,0.052520752,-0.0029010773,-0.026794434,0.00014281273,0.09246826,-0.020904541,-0.0073394775,0.0012874603,-0.0006952286,0.03643799,-0.0033187866,-0.026947021,-0.050750732,-0.0037136078,-0.043182373,0.02545166,-0.009613037,0.027297974,-0.0037155151,0.002840042,-0.015945435,0.0015296936,-0.02720642,0.018600464,-0.00041484833,0.006916046,-0.011222839,-0.039611816,0.002456665,0.024673462,-0.004711151,0.026870728,0.027267456,0.025177002,-0.009742737,-0.0368042,-0.04208374,-0.021728516,-0.0037021637,0.014076233,0.019104004,0.015586853,0.048858643,-0.044708252,0.0026779175,0.031433105,0.0025100708,0.04006958,-0.007129669,0.012069702,-0.07720947,-0.061401367,-0.026062012,-0.04824829,0.026657104,0.025924683,-0.0022506714,0.056365967,0.012451172,-0.017349243,-0.031555176,0.008682251,-0.043640137,0.007221222,0.046051025,-0.01939392,-0.044433594,-0.0029392242,-0.011276245,0.0062294006,0.04058838,0.002193451,0.028411865,0.055358887,0.034210205,0.002248764,0.043823242,0.018508911,0.019943237,0.011566162,-0.025146484,-0.024337769,-0.016571045,0.02999878,-0.022949219,-0.008651733,-0.05606079,0.053527832,0.037719727,0.08679199,-0.008026123,0.002506256,0.04660034,-0.008033752,0.006893158,-0.0053901672,-0.011024475,-0.039916992,-0.05053711,0.032470703,-0.0154418945,-0.0059394836,-0.0013465881,0.033935547,0.00868988,0.015075684,-0.018569946,0.041168213,-0.00566864,0.013168335,0.011672974,-0.0075950623,0.047180176,0.04067993,-0.050933838,0.01499939,0.028808594,-0.049957275,-0.0016765594,0.037261963,-0.030044556,-0.017105103,-0.047668457,-0.03591919,-0.013801575,0.0066986084,-0.06384277,0.005138397,-0.005126953,0.018295288,0.016326904,-0.014877319,-0.020889282,0.0025253296,-0.027893066,-0.056518555,-0.00687027,-0.02444458,0.01411438,0.038909912,-0.01777649,0.006011963,0.004219055,-0.02027893,0.01083374,0.017807007,0.02130127,-0.00642395,-0.04067993,0.019561768,-0.01222229,0.0074768066,0.027008057,0.028762817,0.036376953,0.031951904,0.03878784,0.0052948,-0.010192871,-0.05606079,0.0033779144,-0.043762207,0.004501343,-0.0014734268,-0.015090942,-0.007949829,-0.019012451,-0.044158936,-0.013122559,0.012870789,-0.014892578,0.005607605,0.032714844,-0.032196045,-0.020751953,-0.051818848,-0.012298584,-0.009109497,0.07116699,0.019882202,-0.015296936,-0.05340576,-0.007637024,0.02432251,0.010124207,0.031799316,-0.014442444,-0.016403198,-0.0058555603,-0.037841797,-0.02633667,-0.020584106,0.026901245,-0.011146545,-0.011810303,0.02218628,0.0024585724,0.0065231323,-0.012573242,0.0025844574,0.021820068,-0.02116394,0.0065689087,-0.027786255,0.025360107,0.0014448166,0.0071372986,-0.022964478,0.044281006,0.009216309,0.037963867,-0.03604126,-0.014625549,-0.010368347,0.011253357,0.034576416,-0.016159058,-0.003929138,-0.0045928955,-0.047698975,-0.048675537,0.040405273,-0.020324707,0.015533447,0.010810852,0.018096924,0.032562256,-0.02192688,0.023803711,0.030670166,-0.020935059,-0.005870819,-0.010246277,-0.043182373,-0.0184021,-0.010406494,-0.018157959,0.03338623,-0.016067505,0.005748749,-0.0022220612,-0.023345947,0.04675293,0.0011501312,-0.0022659302,0.013671875,0.007091522,0.016494751,0.049346924,0.022567749,-0.05114746,0.02897644,0.002817154,0.01374054,-0.008018494,0.050109863,0.04055786,-0.017608643,0.0021839142,-0.0015306473,-0.029815674,-0.013542175,-0.0049819946,0.0041503906,0.018356323,-0.008674622,-0.042419434,0.011672974,0.015464783,-0.018844604,-0.02784729,0.0075683594,0.0025730133,-0.042144775,0.0234375,0.03173828,0.05999756,-0.022216797,0.011924744,0.008125305,0.0284729,0.02822876,0.02178955,-0.015419006,0.015686035,-0.0079193115,0.0033054352,-0.008201599,0.0056419373,0.022537231,-0.0026855469,0.02281189,0.032684326,0.01675415,-0.03363037,-0.032714844,0.012786865,-0.029281616,-0.027023315,0.028762817,0.024032593,0.026641846,-0.026947021,0.02420044,0.0015888214,-0.026412964,-0.03048706,-0.023544312,0.046417236,-0.0051612854,-0.011489868,0.004962921,0.011436462,0.01889038,-0.046295166,-0.0058403015,0.010665894,0.01159668,-0.019760132,-0.03994751,-0.033447266,-0.00066900253,0.03894043,0.019134521,0.0008277893,0.029281616,0.009963989,0.016036987,0.006011963,-0.004234314,-0.014183044,-0.010475159,-0.04043579,-0.012123108,0.0049095154,0.009681702,-0.0340271,0.023330688,-0.0033016205,-0.01727295,0.00422287,-0.027053833,-0.0065231323,-0.00774765,0.0032234192,0.03994751,-0.00223732,0.022354126,-0.014038086,-0.034576416,-0.01876831,0.010917664,0.017196655,-0.057525635,0.018188477,0.0011148453,-0.005115509,-0.0033073425,0.017288208,0.010627747,0.02670288,0.021759033,0.044311523,-0.03387451,0.042877197,-0.03744507,0.025939941,-0.017059326,-0.042236328,0.0014209747,-0.022003174,-0.008300781,0.041534424,-0.03036499,-0.01134491,-0.017868042,-0.03036499,-0.01625061,-0.07550049,0.008758545,0.03475952,0.035705566,-0.011123657,0.0019254684,0.0030021667,0.0053863525,-0.015899658,0.007484436,-0.004676819,0.02078247,0.013473511,0.0011348724,-0.025161743,-0.02444458,-0.0119018555,-0.002620697,-0.04901123,-0.05871582,-0.011924744,-0.0012979507,-0.0034503937,-0.009437561,-0.026046753,-0.042297363,0.011650085,-0.03353882,0.025283813,0.0024719238,0.009086609,0.0055656433,-0.02330017,0.0063591003,0.0054626465,-0.008293152,0.031677246,-0.0057296753,-0.027313232,-0.030776978,0.005897522,0.027954102,0.03137207,0.007972717,-0.015930176,-0.0029697418,-0.019180298,-0.03866577,-0.005783081,-0.017089844,-0.012451172,-0.0039253235,0.008583069,-0.04864502,0.002714157,-0.04083252,-0.0050239563,0.032714844,0.014907837,0.009925842,-0.010505676,0.0028648376,-0.0031414032,0.00019347668,-0.040863037,0.015716553,0.010902405,-0.000992775,0.018188477,0.052246094,-0.012413025,-0.008995056,-0.0006289482,0.0022029877,0.02659607,-0.024093628,0.0011205673,-0.033233643,0.013076782,-0.016021729,-0.013198853,-0.045928955,-0.0042152405,0.07183838,-0.0015974045,0.0015201569,-0.001405716,-0.014160156,0.022140503,0.030883789,-0.02482605,-0.000009655952,-0.010894775,0.011268616,-0.021347046,0.015319824,0.000002026558,0.023345947,-0.022018433,-0.055145264,-0.0050811768,0.0013132095,-0.023025513,-0.06323242,-0.031463623,-0.07354736,-0.007980347,-0.0051956177,-0.03274536,-0.0035057068,0.010765076,-0.017166138,-0.07867432,-0.0039100647,0.05432129,-0.008201599,0.03845215,-0.009262085,0.01727295,0.03237915,-0.0357666,-0.004966736,0.024230957,-0.02027893,-0.03012085,-0.01727295,0.026672363,-0.014732361,-0.007865906,0.015930176,-0.0009717941,0.014289856,-0.015640259,0.009094238,-0.022415161,0.022140503,-0.015205383,0.03152466,-0.008384705,-0.020950317,0.051086426,-0.059631348,0.018615723,0.0024414062,-0.020980835,0.0015420914,0.035003662,0.03302002,-0.048828125,-0.019897461,0.032958984,0.012207031,0.015060425,-0.010185242,0.050628662,0.016326904,-0.014549255,0.0028438568,-0.0025424957,-0.026672363,-0.047668457,-0.045166016,0.022445679,-0.0050315857,0.016952515,-0.00730896,0.00040984154,0.020462036,-0.0075569153,0.0022850037,-0.018463135,-0.039001465,-0.025100708,-0.0033187866,-0.0053367615,-0.0010690689,0.0051498413,0.028152466,0.016494751,0.046966553,0.003791809,-0.0014781952,0.01838684,0.027313232,-0.027740479,0.0051651,0.017318726,-0.0015258789,0.019012451,0.016326904,0.014144897,-0.057678223,-0.007183075,-0.034088135,0.006629944,-0.006717682,-0.011497498,-0.023376465,-0.011642456,-0.00024986267,-0.0052719116,-0.05105591,0.009750366,-0.031341553,-0.017440796,-0.016784668,-0.0008325577,0.02658081,0.015670776,-0.011474609,0.012390137,-0.0022220612,0.054534912,-0.006664276,-0.010749817,0.023147583,0.047973633,0.026229858,-0.035095215,-0.014587402,-0.00041413307,0.0005698204,0.009132385,-0.022460938,0.013290405,0.027374268,-0.01247406,-0.005241394,-0.009262085,0.04055786,-0.019439697,0.0088272095,-0.018936157,0.013145447,-0.006652832,0.046295166,-0.04940796,0.00466156,0.016601562,0.00623703,-0.010856628,-0.017105103,-0.023254395,0.030593872,-0.007820129,-0.011047363,0.054901123,-0.0042877197,0.022476196,-0.037109375,-0.036376953,-0.006324768,-0.017532349,-0.01574707,0.02508545,-0.011634827,0.0093688965,0.016983032,-0.015991211,0.036071777,-0.025970459,0.016952515,0.0010843277,0.016296387,0.0030174255,-0.0037956238,-0.02330017,-0.0031795502,0.0008955002,-0.012878418,-0.005329132,0.032592773,0.02734375,0.023513794,0.048614502,0.0067443848,0.018432617,-0.037200928,-0.017929077,0.0029659271,-0.011604309,0.010986328,-0.014587402,0.04840088,0.03012085,0.018722534,0.02859497,0.026229858,0.04711914,0.0044288635,0.010543823,-0.010025024,0.009773254,-0.019210815,0.016464233,0.0028247833,0.04623413,-0.033081055,0.007835388,0.028152466,0.02407837,-0.019195557,0.029678345,0.05569458,0.020629883,0.010131836,0.03543091,0.0010499954,-0.010047913,-0.008857727,-0.024902344,0.054779053,0.0129852295,0.042755127,0.041931152,-0.0016622543,-0.0068244934,0.03338623,-0.043060303,-0.023849487,0.0574646,0.031036377,-0.02909851,-0.00058078766,-0.0037879944,-0.000024557114,-0.047912598,-0.03768921,0.0073547363,0.010551453,-0.0033721924,0.0014896393,-0.01109314,-0.017837524,0.0018663406,0.010551453,0.018478394,-0.017791748,0.015388489,0.02507019,0.010154724,0.023422241,0.0003299713,0.031555176,-0.025360107,-0.030181885,0.014839172,0.0021457672,-0.0061950684,-0.013839722,0.032073975,-0.002609253,0.030014038,0.035980225,-0.0070343018,0.00198555,0.018829346,0.007926941,-0.0011930466,0.07672119,0.03842163,0.015609741,0.041931152,0.039276123,0.025161743,-0.04043579,0.007774353,-0.014259338,0.009231567,-0.020050049,-0.031921387,0.0053749084,-0.0088272095,0.021896362,0.001616478,-0.011512756,0.012084961,0.0368042,0.004009247,-0.00548172,-0.009140015,0.005344391,-0.022109985,-0.011665344,0.013961792,-0.0024814606,0.038208008,0.011260986,0.041870117,-0.02357483,0.028213501,-0.0041503906,-0.010757446,0.005405426,0.012519836,-0.040374756,0.010284424,-0.00065612793,0.0003862381,-0.04434204,0.011962891,0.03012085,-0.0055885315,0.0085372925,0.016830444,-0.0043907166,-0.016036987,0.010658264,0.017059326,-0.013366699,-0.025268555,-0.021392822,0.026870728,0.032684326,0.009765625,0.018844604,-0.014945984,0.013923645,-0.004928589,-0.012893677,-0.00034189224,0.008232117,-0.012176514,-0.004425049,0.01776123,0.03338623,0.016296387,0.04107666,-0.009140015,-0.012870789,0.009376526,0.030548096,0.018127441,0.0038776398,-0.0011014938,0.015991211,-0.017471313,0.041107178,0.030807495,0.0082473755,0.024047852,-0.007713318,-0.006893158,0.011047363,-0.027297974,0.013374329,-0.02255249,-0.0034732819,-0.0011501312,0.021499634,-0.0076828003,-0.048431396,0.0104599,-0.016952515,-0.019805908,-0.01209259,0.019302368,0.0030841827,0.018417358,0.048309326,0.01612854,-0.031021118,0.06451416,-0.022277832,0.06274414,-0.009666443,-0.014907837,0.054229736,0.031173706,0.03616333,0.0077323914,0.0101623535,-0.025680542,0.023605347,0.04437256,0.02658081,-0.00024962425,0.0015678406,-0.012176514,0.03375244,0.0022010803,0.033569336,-0.008857727,0.008605957,0.016845703,-0.002046585,0.001748085,-0.0062446594,-0.015037537,-0.00630188,0.049316406,-0.0076828003,-0.012382507,-0.02432251,-0.01574707,0.023849487,-0.0077552795,-0.0053138733,0.00907135,-0.023025513,0.007926941,-0.038848877,-0.00793457,0.019058228,0.020645142,-0.045196533,-0.0107803345,0.011650085,0.023666382,-0.028320312,0.024963379,0.02130127,-0.014419556,0.024780273,0.04623413,-0.007896423,0.024749756,-0.00075626373,0.028289795,0.036834717,0.006149292,-0.013191223,-0.0015058517,0.024627686,-0.016036987,0.012237549,0.030563354,-0.0066184998,-0.015930176,0.002286911,-0.0035648346,-0.0019102097,0.011550903,-0.0020179749,0.0018796921,-0.0033340454,0.009162903,0.02116394,0.0007920265,-0.0028572083,0.012306213,-0.008430481,-0.0137786865,0.016296387,0.04058838,0.028182983,-0.027633667,0.0076942444,0.005844116,0.0027694702,-0.018951416,-0.016113281,-0.0063056946,-0.01828003,0.012527466,0.00894928,0.015602112,0.010643005,-0.032073975,0.0048713684,0.020828247,0.014274597,0.016326904,-0.0082092285,-0.010948181,0.009971619,-0.0048599243,-0.008178711,0.00013709068,-0.017333984,-0.022445679,0.014732361,-0.0019760132,-0.027191162,0.01096344,-0.000108361244,0.00032424927,0.00088071823,-0.016082764,0.012763977,-0.0118637085,-0.0066604614,0.010108948,0.00856781,-0.01586914,-0.004146576,-0.01637268,0.04714966,0.05078125,-0.010353088,-0.017028809,0.017456055,0.015419006,0.017288208,0.040527344,0.0052757263,0.046325684,0.018936157,-0.011886597,-0.01374054,0.017791748,-0.016036987,-0.026367188,0.009803772,-0.013389587,-0.011146545,0.0059890747,-0.0016860962,-0.0019483566,-0.018371582,-0.01586914,-0.015182495,-0.021774292,0.01725769,0.003829956,0.0107040405,-0.023880005,-0.010665894,0.0074272156,-0.031829834,-0.046966553,-0.013648987,-0.00030589104,-0.024642944,-0.056427002,0.00026988983,-0.031280518,0.0065460205,-0.014808655,-0.0028972626,-0.007247925,0.030227661,-0.019210815,-0.003189087,0.0042495728,0.026168823,0.015464783,0.00944519,0.023666382,-0.026550293,-0.015167236,-0.029815674,0.0023536682,-0.011260986,0.018554688,0.00097227097,0.040283203,0.020339966,-0.0027446747,0.000045359135,-0.021774292,0.008895874,-0.01626587,-0.0335083,-0.019195557,0.0129776,0.023025513,0.0036964417,0.0034275055,0.029418945,-0.027740479,-0.005680084,0.0079193115,0.043151855,0.005279541,0.024154663,-0.0178833,-0.008140564,-0.012039185,-0.0055732727,0.0008034706,0.0049057007,0.0046310425,-0.0059509277,-0.01651001,-0.0021972656,0.029937744,-0.029830933,-0.011550903,0.025482178,0.008071899,-0.006290436,0.04736328,0.017715454,0.009506226,-0.014343262,-0.012298584,0.025421143,0.057525635,0.009613037,0.018234253,0.0065689087,0.0118637085,-0.01448822,0.005847931,0.011131287,-0.0135269165,-0.055358887,-0.007511139,-0.037597656,0.03942871,0.0011415482,0.009422302,-0.010871887,0.004940033,-0.002904892,-0.044006348,-0.026473999,0.024230957,0.0030975342,-0.009918213,-0.01109314,0.011695862,0.010757446,-0.033447266,-0.0053482056,-0.030853271,-0.026794434,-0.019927979,-0.01235199,0.027893066,0.014801025,-0.00013792515,-0.0025596619,-0.0072669983,-0.0049362183,0.0036144257,0.022354126,-0.01600647,0.002407074,0.014167786,0.012519836,-0.03543091,0.02305603,-0.0010929108,0.008132935,0.008964539,-0.016143799,0.021514893,-0.0033283234,0.021713257,-0.00015711784,-0.013786316,0.028778076,0.0077285767,0.019302368,-0.03503418,0.0070114136,-0.0037555695,0.010154724,0.036834717,-0.022369385,-0.011230469,0.018951416,-0.028656006,-0.024261475,0.0047454834,0.02357483,0.010528564,-0.022369385,0.0317688,-0.0054359436,-0.003791809,-0.00048208237,0.015853882,-0.018630981,0.0035419464,0.04598999,0.014328003,0.012435913,0.00052690506,-0.013008118,-0.025390625,-0.013839722,0.019378662,0.002620697,-0.027786255,0.020935059,0.007949829,0.048065186,-0.010444641,0.015205383,0.021499634,-0.011512756,0.039916992,0.0090789795,0.034332275,0.009506226,-0.044799805,-0.00014901161,-0.012687683,-0.029022217,0.00655365,-0.006752014,0.0138549805,-0.014907837,0.004016876,-0.009376526,0.023849487,-0.022399902,0.017181396,-0.027816772,-0.011375427,-0.041015625,-0.004863739,-0.025360107,0.010520935,0.040924072,0.004558563,0.014808655,0.0044288635,-0.0287323,0.030441284,0.05783081,0.0017929077,-0.028137207,-0.020965576,0.006126404,-0.005126953,0.011627197,0.018554688,-0.012535095,-0.03250122,0.014297485,-0.011314392,-0.0029468536,-0.011405945,0.021057129,0.005077362,0.0067710876,-0.0019321442,0.03036499,-0.00005596876,0.01285553,-0.0077209473,0.012809753,0.024414062,0.03439331,-0.013252258,0.024810791,0.023788452,-0.043426514,0.055999756,-0.014381409,0.025115967,-0.01626587,0.019302368,-0.03149414,-0.03994751,0.0058021545,-0.008773804],"createdAt":"2026-04-18T18:34:26.860Z","updatedAt":"2026-04-23T00:31:02.507Z","lastSeenAt":"2026-04-23T00:31:02.507Z","tsv":"'/api':179 '/api/v1/orders/99':112,218 '/call':19,38 '/docs':177 '/pricing':178 '/readme':181 '0.02':18,37,99,139 '000':128 '0x8335':133 '20':127 '2913':134 '402':122 '402 payment api' 'access':118,226 'across':58 'addit':192 'ai':12,31,68 'ai-inference' 'analysi':72 'analyt':11,30,62 'analytics-api' 'api':5,24,45,117,150,225 'attach':161 'avail':208 'base':8,27,107,129,136 'base usdc api' 'behind':216 'broad':50 'caller':159 'catalog':51 'categori':60 'challeng':123 'classif':75 'classification' 'connect':187 'content':194 'convers':92 'crawl':211 'data':61,65 'document':172,203 'embed':76 'embeddings' 'enabl':44 'endpoint':16,35,57,95,111,219 'equal':138 'estim':86 'exact':146,214 'exampl':207 'exchang':81 'export':66 'extrem':174 'feed':80 'financ':13,32,77 'finance-data' 'found':247 'four':59 'function':215 'gas':85 'generat':93 'geocod':90 'geocoding' 'handl':142 'header':166 'infrastructur':88 'insight':67 'key':151 'learn':70 'limit':154 'list':114 'low payment fee' 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':69 'materi':212 'metric':63 'micropayment api' 'name':223 'network':108 'no-api-key' 'no-rate-limits' 'offer':48 'openapi':198 'order':233,237 'order-rel':236 'order-retriev':232 'page':182 'paid':102 'path':229 'pay':2,21,54 'pay per call api' 'pay-per-request':1,20,53 'payload':245 'payment':140,165,170 'per':3,22,55,100 'platform':6,25,46 'premium':116,224 'price':79,97 'prompt':189 'proof':171 'quot':84 'rate':82,153 'relat':238 'render':184 'report':64 'request':4,23,56,101,124 'request/response':201 'requir':158 'resourc':239 'retriev':234 'return':120 'sampl':244 'schema':202,242 'scheme':147 'sentiment':71 'sentiment-analysis' 'signup':157 'simpli':160 'spars':175 'spec':199 'specif':110 'suggest':230 'summar':74 'technic':193 'text':73 'text-summarization' 'token':83 'unclear':221 'unit':130 'usag':206 'usdc':104,132 'usdc-base' 'util':15,34,89 'valid':91,169 'via':9,28,143 'wallet':188 'web3':78 'x':164 'x-payment':163 'x402':10,29,43,145 'x402 api' 'x402-enabled':42 'x402-payment'","prices":[{"id":"8cb9513c-2b84-419a-a827-d046c869f6b0","listingId":"0c6ebd6f-1ae1-457f-bd5e-931ebf049c64","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/99","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:34:26.860Z"}],"sources":[{"listingId":"0c6ebd6f-1ae1-457f-bd5e-931ebf049c64","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/orders/99","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:26.860Z","lastSeenAt":"2026-04-23T00:31:02.507Z"}],"details":{"listingId":"0c6ebd6f-1ae1-457f-bd5e-931ebf049c64","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/orders/99 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The endpoint returns a 402 challenge requesting up to 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/orders/99"},{"claim":"Categories include Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) without signup or API keys","Fetching real-time financial data such as token quotes, gas estimates, and exchange rates on a per-call basis","Running analytics queries and data exports with micropayment-based access control","Using utility services like geocoding, validation, and data conversion via x402 payments"],"bestFor":["Agents and developers who want instant, keyless API access paid per request","Crypto-native applications that can settle USDC on Base","Low-volume or bursty workloads where subscription pricing is wasteful"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume production workloads where per-request pricing at $0.02 may be costly compared to bulk plans","Developers without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:01:23.704Z"},"updatedAt":"2026-04-23T00:31:02.507Z"}}