{"id":"3ba152d4-c167-4752-8d19-fa657c8d2b26","shortId":"XyB5cs","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","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/wire/137` is listed as \"Premium API Access\" and returns a standard x402 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals) per call. No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader platform advertises multiple API categories including 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 uniformly priced at $0.02 per request. However, the specific endpoint being listed here (`/api/v1/wire/137`) is labeled generically as \"Premium API Access\" and does not appear in the site's public API directory, so its exact functionality is unclear.\n\nThe endpoint accepts POST requests, settles payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base, and has a payment timeout of 300 seconds. Documentation beyond the landing page is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","post-endpoint","json-response"],"categories":["api-platform","crypto"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["The specific endpoint /api/v1/wire/137 does not appear in the site's public API directory — its actual functionality is unknown.","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no usable content.","No OpenAPI schema, no request/response examples, and no description of what this endpoint returns.","The platform lists many API categories but provides no technical documentation for any of them."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/137","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/wire/137","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (returns a valid x402 402 challenge), but there is no documentation, no OpenAPI schema, no example request/response, and the specific functionality of /api/v1/wire/137 is unknown. The docs/pricing/README pages are all blank 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":"2026-04-19T14:48:09.465Z","embedding":[-0.019622803,-0.04421997,0.029586792,0.0073165894,-0.0038776398,-0.023513794,-0.010803223,0.032989502,0.065979004,-0.074523926,0.01259613,-0.043121338,-0.04006958,-0.038909912,-0.01335907,0.018630981,0.005569458,0.015960693,-0.02760315,0.024291992,0.017150879,-0.009635925,-0.009185791,0.041290283,0.008460999,-0.0044555664,-0.012451172,0.0058135986,-0.011581421,-0.04815674,0.042785645,-0.020568848,-0.015586853,0.01159668,-0.03768921,-0.012199402,0.0062408447,0.02709961,0.027496338,0.010673523,-0.010658264,-0.059020996,0.0013093948,-0.027557373,-0.05480957,0.0067749023,-0.009681702,0.0035495758,0.01612854,0.012062073,-0.028823853,-0.0029754639,-0.0073661804,0.000995636,-0.0035629272,0.02204895,0.010391235,-0.002336502,0.008888245,0.015960693,0.0011987686,-0.061187744,-0.007659912,-0.017089844,0.0077552795,0.062286377,-0.016036987,0.04611206,0.022506714,0.078125,0.03302002,0.05041504,0.034362793,-0.0055274963,-0.0096206665,-0.011703491,0.0064926147,0.056854248,-0.01864624,-0.023529053,-0.019454956,-0.022109985,-0.055145264,0.014389038,-0.020690918,-0.047851562,-0.018539429,0.0149002075,-0.0074501038,0.027145386,-0.07678223,-0.003786087,-0.014427185,0.0007677078,0.0015153885,-0.00056028366,-0.014556885,0.012321472,-0.018417358,0.02468872,-0.004562378,-0.030639648,0.010040283,0.0062065125,0.0317688,0.04336548,0.022781372,0.016571045,0.0024776459,0.012619019,-0.030914307,0.02003479,-0.008323669,-0.008285522,0.022003174,-0.002155304,0.00724411,0.021438599,-0.006679535,0.03277588,-0.052368164,0.0390625,0.009918213,0.0027160645,0.007888794,-0.037261963,-0.025177002,0.017227173,-0.013633728,0.00016868114,0.012260437,0.007091522,0.029663086,-0.024505615,-0.030670166,0.022628784,-0.032989502,-0.019302368,-0.045410156,-0.031402588,0.047729492,-0.026565552,0.027450562,0.02355957,-0.08557129,0.00046348572,-0.041870117,0.0005097389,-0.021316528,-0.013954163,0.004623413,0.024749756,-0.010154724,-0.016799927,-0.025619507,-0.01713562,-0.008682251,0.034362793,-0.014602661,0.045837402,-0.017990112,0.02949524,0.017425537,0.008155823,0.025253296,0.026565552,-0.019760132,-0.08001709,-0.0836792,-0.012939453,-0.00012660027,-0.022216797,-0.028289795,0.028198242,0.0022563934,-0.07067871,-0.022872925,-0.016235352,-0.0021762848,-0.044067383,0.0065841675,-0.028213501,0.0057907104,-0.006526947,-0.08355713,-0.031555176,-0.028198242,0.06359863,0.02809143,0.009094238,0.034362793,-0.021072388,0.050720215,0.029281616,-0.012283325,-0.01399231,0.01864624,-0.027328491,0.009399414,-0.011917114,0.0010995865,-0.03378296,0.034576416,0.07092285,0.011711121,-0.0082473755,-0.016723633,-0.070007324,-0.047058105,-0.034118652,0.023025513,0.0055389404,0.0031204224,0.034118652,-0.029418945,-0.046051025,0.014526367,0.0013170242,0.005054474,0.058166504,0.00907135,-0.008766174,0.015975952,0.02532959,-0.053527832,0.040130615,0.02192688,0.012496948,-0.024398804,-0.013442993,0.028442383,0.030456543,-0.01713562,0.017288208,-0.0149002075,0.03753662,-0.01374054,0.007259369,0.018661499,-0.014144897,-0.024902344,-0.031051636,-0.030029297,0.035003662,-0.00035476685,-0.02319336,-0.031829834,-0.072509766,0.041931152,0.042999268,0.039093018,-0.004032135,0.007762909,-0.017837524,-0.00059080124,-0.07312012,0.07080078,0.06524658,0.0011577606,-0.017852783,0.027069092,-0.008529663,-0.027328491,0.019897461,-0.003189087,-0.03564453,-0.010032654,0.009841919,-0.035705566,0.003967285,0.021148682,0.028121948,0.05795288,-0.014350891,-0.054595947,-0.016204834,0.0009918213,0.0044403076,-0.031799316,-0.0017490387,-0.013031006,0.015113831,0.01878357,0.0077285767,0.011077881,0.00004774332,-0.020950317,-0.0071640015,0.007572174,-0.003692627,-0.03527832,0.016036987,-0.017715454,-0.05429077,0.008766174,-0.0024414062,0.064453125,-0.04425049,0.028137207,-0.011734009,-0.008003235,0.056640625,-0.0063667297,-0.049804688,0.013801575,0.026123047,0.008155823,0.04385376,0.023010254,-0.04159546,-0.0234375,0.07763672,-0.011116028,-0.013626099,0.0046691895,0.01852417,0.04019165,-0.0099487305,-0.066345215,-0.035736084,0.0015792847,-0.028198242,0.027114868,-0.029846191,0.025848389,-0.018066406,0.017074585,-0.030258179,-0.007843018,-0.03491211,0.011306763,-0.0065956116,0.011077881,-0.012527466,-0.013404846,0.011993408,-0.0040130615,-0.015266418,0.0009288788,0.061035156,0.021194458,-0.00047826767,-0.032196045,-0.034729004,-0.013549805,0.0062026978,0.019332886,0.030380249,0.032562256,0.060302734,-0.042541504,0.008354187,0.021896362,0.01751709,0.039398193,-0.006511688,0.006881714,-0.076293945,-0.048706055,-0.02748108,-0.049621582,0.036743164,0.011550903,-0.007881165,0.050567627,0.020004272,-0.033233643,-0.040924072,0.018554688,-0.031097412,-0.0073547363,0.050750732,-0.014373779,-0.018203735,0.016677856,0.0009422302,0.011161804,0.031341553,0.024490356,0.02961731,0.078186035,0.045288086,0.011856079,0.011154175,0.0027370453,0.02973938,0.0107803345,-0.017440796,-0.024124146,-0.016418457,0.052764893,-0.02619934,-0.01777649,-0.07086182,0.060577393,0.03201294,0.08856201,0.019012451,0.008453369,0.034820557,-0.01663208,-0.0011339188,-0.030029297,-0.024871826,-0.014717102,-0.049346924,0.03878784,-0.011894226,-0.0023231506,-0.02532959,0.029510498,-0.014312744,0.024230957,-0.0158844,0.048217773,-0.016784668,-0.009147644,0.008880615,0.02230835,0.041870117,0.05734253,-0.038269043,0.013206482,0.026657104,-0.028427124,0.0017776489,0.02305603,-0.005832672,0.017547607,-0.051574707,-0.016540527,-0.006587982,-0.0031528473,-0.048339844,-0.0030975342,-0.0038452148,0.022247314,0.045898438,-0.016052246,-0.0070228577,-0.023452759,-0.010551453,-0.045043945,0.00013911724,-0.03878784,-0.0008955002,0.04006958,-0.015670776,-0.0054626465,0.0044784546,-0.0062446594,-0.0138549805,0.012817383,0.028015137,-0.0010404587,-0.028137207,0.04055786,0.01826477,0.0066223145,-0.0015907288,0.034942627,0.020858765,0.03353882,0.050811768,0.014312744,-0.021102905,-0.06652832,0.033111572,-0.05130005,0.0017576218,0.030838013,-0.013748169,-0.007091522,-0.021392822,-0.019729614,-0.02760315,0.030227661,-0.018447876,0.011962891,0.010574341,-0.03265381,-0.025360107,-0.039794922,-0.01838684,-0.0057296753,0.050628662,0.027450562,0.0042266846,-0.06945801,-0.0009598732,0.011993408,0.0129776,0.03781128,-0.013710022,-0.010101318,-0.022644043,-0.036834717,-0.00013279915,-0.018814087,0.014564514,-0.0029888153,0.006072998,0.035491943,0.005203247,0.025161743,0.0103302,0.0006504059,0.021316528,-0.022857666,-0.016830444,0.0019216537,0.044311523,0.0073776245,0.0053138733,-0.041503906,0.043151855,0.015182495,0.03543091,-0.03842163,-0.00674057,-0.003282547,0.011169434,0.0090408325,-0.009651184,-0.0052833557,0.0035934448,-0.039245605,-0.06359863,0.051727295,-0.00605011,0.023925781,0.027908325,-0.013511658,0.017593384,-0.010696411,0.0059547424,0.00995636,-0.022491455,-0.0074882507,-0.018096924,-0.03010559,-0.02130127,-0.018295288,-0.027374268,0.02532959,-0.019744873,0.021194458,0.0062828064,-0.024169922,0.021224976,-0.006340027,-0.010307312,0.020889282,-0.008811951,0.029953003,0.041229248,-0.002670288,-0.03869629,0.009613037,0.0011034012,0.009719849,-0.0005578995,0.04248047,0.029647827,0.006893158,-0.003282547,-0.010009766,-0.0066604614,-0.025665283,0.003364563,0.01184082,0.005508423,-0.0049552917,-0.0368042,0.014518738,0.0007958412,-0.042510986,-0.022598267,0.010719299,0.008232117,-0.04031372,0.021026611,0.033813477,0.049926758,-0.020401001,-0.0075645447,-0.005176544,0.0335083,0.0395813,0.012611389,-0.023086548,0.018325806,-0.017807007,0.015419006,-0.0037784576,-0.011413574,0.017059326,0.004558563,0.021469116,0.028549194,0.0004992485,-0.036468506,-0.032318115,0.008079529,-0.012367249,-0.028198242,0.023788452,0.027862549,0.025238037,-0.02619934,0.01663208,0.013786316,-0.008476257,-0.0085372925,-0.00018942356,0.03778076,-0.019638062,-0.015823364,0.012756348,0.015319824,0.0390625,-0.0552063,-0.010360718,0.018081665,-0.008155823,-0.027496338,-0.039215088,-0.03353882,0.01134491,0.04208374,0.0005545616,0.016830444,0.029083252,0.0030384064,-0.004131317,0.028671265,-0.002779007,-0.022094727,-0.01638794,-0.046966553,-0.017211914,-0.015731812,-0.0088272095,-0.021240234,0.010269165,-0.0039367676,-0.026657104,0.0042152405,0.0027885437,0.00086832047,-0.0022563934,0.00484848,0.05206299,0.0014276505,0.014755249,-0.024398804,-0.040740967,-0.014923096,0.00819397,0.004081726,-0.04574585,0.015975952,-0.018554688,-0.002363205,0.019546509,0.008956909,0.019256592,0.027496338,0.00831604,0.02935791,-0.043701172,0.047058105,-0.038024902,0.008705139,-0.0011339188,-0.048797607,-0.00831604,-0.021697998,-0.012062073,0.04724121,-0.023895264,-0.0016746521,-0.025650024,-0.03137207,-0.0046424866,-0.04660034,0.011314392,0.03994751,0.028579712,-0.031799316,0.007633209,-0.0016489029,0.0065078735,-0.017471313,0.0027999878,-0.022201538,0.0181427,0.02178955,-0.0004580021,-0.047424316,-0.025909424,-0.02229309,-0.0016937256,-0.036956787,-0.047027588,-0.013031006,-0.00680542,-0.011817932,-0.009681702,-0.026016235,-0.035369873,-0.006465912,-0.057250977,0.013290405,0.0058288574,0.014198303,0.0066070557,-0.021621704,0.0000060796738,0.012130737,-0.02293396,0.029083252,0.0048065186,-0.006690979,-0.05218506,0.011276245,0.0049972534,0.03201294,-0.004180908,-0.012008667,-0.005657196,-0.019088745,-0.04147339,-0.0018100739,-0.010429382,-0.0024261475,-0.01576233,0.007709503,-0.047821045,0.0026569366,-0.0127334595,0.009346008,0.011260986,0.0077285767,0.015060425,-0.0012521744,0.010955811,-0.007610321,-0.018447876,-0.025817871,0.016174316,0.009918213,-0.0020141602,0.03414917,0.045013428,0.009185791,-0.024246216,0.009300232,0.01374054,0.009880066,-0.029800415,0.010147095,-0.029190063,0.003545761,-0.013839722,-0.012069702,-0.03274536,0.00039458275,0.08666992,0.00068616867,-0.029388428,-0.01448822,-0.017059326,0.02357483,0.019332886,-0.04058838,-0.011314392,-0.02583313,0.016677856,-0.030761719,0.011978149,-0.001039505,0.024490356,-0.015548706,-0.050201416,-0.02470398,-0.011428833,-0.018463135,-0.059020996,-0.031402588,-0.07348633,0.012901306,0.00011122227,-0.009689331,0.001250267,0.008430481,-0.018722534,-0.0881958,0.010925293,0.052459717,0.012672424,0.014373779,-0.016159058,0.017913818,0.018417358,-0.04324341,-0.0035743713,0.027709961,-0.028396606,-0.021697998,-0.024642944,0.0184021,-0.016738892,-0.011352539,0.015182495,0.022109985,0.022705078,-0.012313843,0.013626099,-0.0065307617,0.00598526,-0.014198303,0.013687134,-0.014427185,-0.011329651,0.037872314,-0.047088623,0.027191162,0.015258789,0.0011701584,0.007385254,0.035705566,0.04724121,-0.03857422,-0.0040512085,0.023849487,0.0141067505,0.030670166,-0.016799927,0.031204224,0.0054130554,-0.01184082,0.02923584,-0.01537323,-0.020690918,-0.029052734,-0.024398804,0.026031494,-0.0061149597,0.013168335,-0.031982422,0.0027275085,0.0119018555,-0.000071942806,0.0181427,-0.0027503967,-0.022857666,-0.016281128,-0.0048713684,0.017410278,-0.0063323975,-0.0020980835,0.032104492,0.039215088,0.018920898,0.009841919,-0.02154541,-0.007156372,0.032073975,-0.012062073,0.00045847893,0.03439331,0.002357483,0.020233154,0.005050659,0.016830444,-0.039215088,-0.023239136,-0.022201538,-0.03555298,-0.006450653,-0.013252258,-0.023452759,-0.006088257,0.014183044,-0.00096702576,-0.017501831,0.005302429,-0.018432617,-0.03036499,-0.009262085,-0.015342712,0.032806396,-0.0042686462,0.014579773,-0.00095272064,0.006401062,0.049438477,0.0017375946,-0.016326904,0.033599854,0.03503418,0.023269653,-0.025405884,-0.0025672913,-0.013267517,0.0028686523,-0.0069389343,-0.041229248,0.0034503937,0.037597656,-0.021331787,0.0034542084,0.009140015,0.016159058,-0.005783081,0.0103302,-0.003730774,0.012428284,-0.0038204193,0.034332275,-0.03955078,0.01890564,0.01638794,-0.008712769,-0.023345947,-0.0046043396,-0.032806396,0.032470703,0.0071258545,-0.010116577,0.04638672,0.004360199,0.026016235,-0.023590088,-0.020935059,0.014732361,-0.028747559,-0.028442383,0.025878906,-0.013824463,0.0014123917,0.009719849,-0.021560669,0.030044556,-0.03491211,0.01953125,-0.0054893494,-0.0010175705,-0.0060806274,-0.023605347,-0.0037403107,-0.009208679,-0.022125244,0.017044067,-0.00042414665,0.049194336,0.019577026,0.035339355,0.05480957,0.025680542,-0.0064926147,-0.04159546,-0.02444458,0.0042266846,-0.013824463,0.016204834,-0.016983032,0.05822754,0.02923584,0.008232117,0.027572632,0.031021118,0.029815674,0.011169434,-0.0067214966,-0.014976501,-0.0053482056,-0.0056495667,0.038909912,-0.0005455017,0.0390625,-0.036865234,0.032562256,0.0181427,0.022476196,-0.03604126,0.03074646,0.074157715,0.011764526,-0.016311646,0.049804688,-0.007194519,-0.012702942,-0.005153656,-0.014335632,0.03717041,0.007068634,0.04711914,0.050933838,0.018035889,0.0013275146,0.028060913,-0.021072388,-0.018966675,0.048950195,0.02949524,-0.0057640076,-0.022842407,-0.0018730164,0.004749298,-0.05053711,-0.024795532,0.022598267,-0.014976501,0.001531601,-0.016098022,-0.0063552856,-0.02027893,0.016174316,0.021316528,0.014221191,-0.012496948,0.019241333,0.03137207,-0.0058898926,0.03149414,-0.0067367554,0.026382446,-0.025024414,-0.026809692,0.01953125,0.009346008,-0.013290405,-0.0073776245,0.016601562,0.012077332,0.031311035,0.041229248,-0.03137207,0.020309448,0.033935547,0.020355225,-0.016708374,0.048339844,0.040100098,0.00995636,0.03768921,0.024169922,0.032958984,-0.03286743,0.016143799,-0.006576538,0.012901306,-0.010658264,-0.0044136047,0.008148193,-0.012664795,0.020141602,-0.009506226,-0.020553589,0.023590088,0.032104492,-0.0014076233,-0.011398315,-0.021484375,-0.0043182373,-0.02015686,-0.004032135,0.014442444,-0.018600464,0.03616333,0.0049591064,0.01448822,-0.018295288,0.021240234,-0.008575439,-0.016799927,-0.003786087,0.030288696,-0.030639648,0.017044067,-0.008583069,0.0033035278,-0.048736572,0.008338928,0.039367676,-0.021453857,0.030380249,0.0037784576,0.0048332214,0.002380371,0.027267456,-0.0033550262,0.0014600754,-0.007896423,-0.03302002,0.033447266,0.050720215,-0.005908966,0.0007801056,-0.025909424,0.0006804466,0.0012598038,-0.013191223,-0.009727478,-0.0037975311,-0.03164673,-0.03555298,0.02444458,0.033203125,0.032165527,0.053131104,-0.021408081,-0.01802063,0.0074501038,0.0418396,0.005207062,-0.0090789795,-0.010238647,0.022232056,-0.020767212,0.0574646,0.022583008,0.010536194,0.0385437,0.00047326088,-0.0345459,-0.00044441223,-0.0126953125,0.01890564,-0.010887146,0.010185242,-0.010810852,0.031799316,-0.010147095,-0.04034424,0.016204834,-0.012939453,-0.027648926,-0.016494751,0.00045275688,0.00491333,0.035247803,0.036071777,0.017028809,-0.025909424,0.062408447,-0.0067863464,0.04840088,0.011009216,-0.0056991577,0.048583984,0.009262085,0.029434204,0.014221191,0.01197052,-0.03543091,0.009811401,0.028518677,0.024749756,0.024414062,0.002538681,-0.019226074,0.039215088,0.0027809143,0.03363037,-0.001285553,-0.0052490234,0.009681702,0.01474762,-0.002943039,-0.0013751984,-0.009613037,0.0032176971,0.03274536,-0.027862549,-0.0062942505,-0.018569946,-0.010314941,0.026657104,-0.012084961,0.0062332153,-0.0022964478,-0.021072388,0.016357422,-0.014770508,-0.03781128,0.000852108,0.0259552,-0.04611206,-0.012611389,0.011886597,0.016159058,-0.016448975,0.044281006,0.023162842,0.010223389,-0.0035247803,0.043548584,-0.014755249,0.031585693,-0.023345947,0.020507812,0.025100708,0.01574707,-0.016433716,0.0016889572,0.0065307617,-0.008628845,0.017410278,0.04147339,-0.0073661804,0.0024166107,-0.005317688,0.002067566,0.0008087158,-0.0015506744,-0.016952515,0.02229309,-0.014274597,-0.0121154785,0.0036773682,-0.007472992,-0.003686905,0.012237549,-0.013687134,-0.01197052,0.011871338,0.03137207,0.01966858,-0.041534424,-0.003074646,0.009559631,0.017303467,-0.020095825,-0.011543274,0.0019550323,-0.029342651,0.004135132,0.013061523,0.0014190674,0.0066986084,-0.019592285,0.0030899048,0.017425537,0.010307312,0.016723633,0.005050659,-0.002368927,0.022628784,-0.009613037,-0.0072784424,-0.010772705,-0.00932312,0.014221191,0.027069092,-0.011779785,-0.019607544,0.03286743,0.004638672,0.019378662,-0.0039596558,-0.007472992,0.017120361,-0.0008673668,0.00013363361,0.0011548996,0.018035889,-0.011108398,-0.0033607483,-0.003534317,0.029281616,0.043121338,-0.028747559,-0.0088272095,0.015182495,0.019073486,0.01108551,0.034454346,0.0078048706,0.043029785,0.017623901,-0.024414062,-0.020584106,0.019699097,-0.008354187,-0.026351929,0.013092041,-0.020477295,-0.024871826,0.019088745,0.015670776,0.0012216568,-0.03277588,-0.003112793,-0.0042381287,-0.009735107,0.013442993,-0.0158844,0.012451172,-0.024017334,-0.010169983,0.008384705,-0.028579712,-0.049438477,-0.024475098,-0.0070991516,-0.009315491,-0.052459717,-0.006793976,-0.02961731,0.011428833,-0.026306152,-0.009277344,-0.008972168,0.011039734,-0.015548706,-0.003194809,0.01109314,0.017471313,0.022155762,0.00623703,0.030258179,-0.02760315,-0.026184082,-0.023117065,0.0058174133,-0.010437012,0.014831543,0.0021038055,0.03756714,0.019683838,-0.013839722,-0.0063705444,-0.019958496,-0.007648468,-0.021621704,-0.009986877,-0.034240723,0.018157959,0.009719849,-0.0036201477,-0.008354187,0.03878784,-0.026611328,-0.016616821,0.037017822,0.05239868,0.005367279,0.021499634,-0.015182495,-0.009559631,-0.007575989,0.009147644,-0.010124207,-0.001698494,0.012199402,-0.011375427,-0.005809784,0.0076522827,0.032073975,-0.01184082,-0.013595581,0.025253296,0.0022907257,-0.015419006,0.034301758,0.007785797,0.00051641464,-0.020477295,-0.024856567,0.013534546,0.035186768,0.017974854,0.011505127,-0.0037021637,0.0060043335,-0.016921997,0.00573349,0.023025513,-0.014984131,-0.04248047,-0.018463135,-0.023956299,0.012619019,0.0070152283,0.017211914,-0.0057144165,0.011413574,-0.028930664,-0.015792847,-0.025756836,0.03970337,0.030975342,-0.006641388,-0.011009216,0.0057792664,0.00044608116,-0.044403076,-0.005138397,-0.054748535,-0.04058838,0.004016876,-0.024246216,0.023162842,0.0015869141,-0.0036830902,-0.0005788803,-0.007194519,-0.0011520386,0.0023174286,0.029510498,-0.013648987,-0.010421753,0.044799805,0.01612854,-0.019683838,0.020355225,-0.017288208,-0.0047950745,0.01586914,-0.005519867,0.018707275,-0.014350891,0.03970337,-0.00944519,-0.007843018,0.02696228,-0.015914917,0.0043640137,-0.023529053,0.01574707,0.0030784607,-0.009223938,0.029159546,-0.02897644,-0.024719238,0.0009756088,-0.015281677,-0.019882202,0.014274597,0.011299133,0.028121948,0.0046195984,0.040283203,-0.011108398,-0.018173218,0.014251709,0.003686905,-0.014007568,0.005859375,0.023834229,-0.008049011,0.0021305084,-0.0005803108,-0.011428833,-0.034729004,-0.0119018555,0.018432617,-0.0040397644,-0.005130768,0.025863647,0.017974854,0.053527832,-0.00021922588,0.0059509277,0.0087509155,0.0043754578,0.02293396,0.00737381,0.0713501,-0.006626129,-0.030899048,0.00982666,0.0037956238,-0.028961182,-0.0137786865,-0.007987976,0.002199173,-0.04800415,0.015670776,-0.013931274,0.028442383,-0.021133423,0.009613037,-0.027572632,-0.006023407,-0.035491943,-0.017044067,-0.023117065,0.0104599,0.03942871,-0.0033130646,0.033569336,0.005748749,-0.024002075,0.009765625,0.03704834,0.0041046143,-0.042785645,-0.017196655,0.019638062,-0.009208679,0.010887146,0.0044403076,-0.011413574,-0.0048561096,0.0031471252,-0.007881165,0.0046043396,-0.0077667236,0.01134491,0.012138367,-0.0000371933,-0.002752304,0.0284729,-0.004234314,-0.010276794,0.015304565,0.013053894,0.037506104,0.03567505,-0.021697998,0.011505127,0.017593384,-0.02633667,0.060516357,0.0051956177,0.021240234,-0.013648987,0.0004911423,-0.043914795,-0.030456543,-0.018753052,0.0048828125],"createdAt":"2026-04-18T19:28:45.940Z","updatedAt":"2026-04-22T19:32:28.806Z","lastSeenAt":"2026-04-22T19:32:28.806Z","tsv":"'/api/v1/wire/137':56,167 '/request':13,28 '0.02':12,27,80,157 '000':74 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':201 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':204 '20':73 '300':213 '402':68 '6':84 'Base network API' 'USDC micropayment API' 'accept':46,194 'access':62,174 'addit':239 'address':200 'advertis':113 'ai':125 'analysi':129 'analyt':119 'api':5,20,38,61,89,115,173,184,225 'appear':178 'attach':98 'base':8,23,51,75,206 'beyond':216 'broader':111 'call':4,19,87 'caller':96 'categori':116 'challeng':69 'classif':132 'connect':234 'content':240 'convers':149 'crypto-paid API' 'data':118,122 'decim':85 'directori':185 'doc':224 'document':215 'embed':133 'endpoint':55,152,163,193 'estim':143 'exact':188 'exchang':138 'export':123 'extrem':221 'feed':137 'financ':134 'function':189 'gas':142 'generat':150 'generic':170 'geocod':147 'given':81 'header':103 'howev':160 'i.e':79 'includ':117 'infrastructur':145 'insight':124 'json-response' 'key':90 'label':169 'land':218 'learn':127 'limit':93 'list':58,165 'lowpaymentfee' 'lowpaymentfee.com':31 'machin':126 'metric':120 'multipl':114 'network':9,24,52 'no-api-key' 'page':219,229 'pay':2,17,35 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':34 'payment':48,102,108,198,210 'per':3,18,36,86,158 'platform':6,21,39,112 'post':195 'post-endpoint' 'premium':60,172 'premium API access' 'price':136,155,226 'prompt':236 'proof':109 'protocol':44 'public':183 'quot':141 'rate':92,139 'readm':228 'render':231 'report':121 'request':37,70,159,196 'requir':95 'return':64 'second':214 'sentiment':128 'settl':197 'simpli':97 'site':181 'spars':222 'specif':54,162 'standard':66 'summar':131 'text':130 'timeout':211 'token':140 'unclear':191 'uniform':154 'unit':76 'usdc':15,30,47,78,82,203 'usdc-base-network' 'use':41,202 'util':146 'valid':106,148 'via':10,25 'wallet':235 'web3':135 'x':101 'x-payment':100 'x402':11,26,43,67,107 'x402 API' 'x402-payment'","prices":[{"id":"c80976e6-84a8-4710-a895-69f78531ce3f","listingId":"3ba152d4-c167-4752-8d19-fa657c8d2b26","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/wire/137","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:45.940Z"}],"sources":[{"listingId":"3ba152d4-c167-4752-8d19-fa657c8d2b26","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/137","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:45.940Z","lastSeenAt":"2026-04-22T19:32:28.806Z"}],"details":{"listingId":"3ba152d4-c167-4752-8d19-fa657c8d2b26","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/137 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requesting up to 20,000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/wire/137"},{"claim":"All endpoints are uniformly priced at $0.02 per request with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/137"},{"claim":"Platform advertises Data & Analytics, AI & ML, Finance & Web3, and Infrastructure API categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a paid API endpoint without traditional API key registration","Agent-driven workflows that need to pay per call using on-chain USDC on Base","Testing x402 protocol integrations with a low-cost endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","AI agents that can autonomously pay for API calls via crypto","Users who want no-signup, no-rate-limit API access"],"notFor":["Users who need detailed API documentation or schemas before integrating","Anyone without access to USDC on the Base network","High-volume use cases where $0.02/request adds up significantly"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:31.226Z"},"updatedAt":"2026-04-22T19:32:28.806Z"}}