{"id":"5f1bd7cc-f4dc-44db-a5d1-ed1d7b32ac0b","shortId":"SaQBeu","kind":"x402","title":"Pay-per-call GBP/USD forex rate endpoint settled in USDC on Base via x402.","tagline":"Pay-per-call GBP/USD forex rate endpoint settled in USDC on Base via x402.","description":"This endpoint at lowpaymentfee.com provides GBP/USD foreign exchange rate data via a simple POST request. It uses the x402 payment protocol, requiring a per-call micropayment of $0.02 in USDC on the Base network. No API keys, accounts, or rate limits are needed — callers attach an X-PAYMENT header with a valid x402 payment proof and receive a JSON response.\n\nThe endpoint is part of a broader suite of APIs offered by lowpaymentfee.com spanning data analytics, AI/ML inference, finance/crypto market data, and utility services, all priced uniformly at $0.02 per request. The specific forex endpoint serves the GBP/USD currency pair, though the exact response schema (bid/ask, mid-rate, timestamp, etc.) is not documented in the available materials.\n\nThe x402 challenge is live and well-formed: it advertises USDC (contract 0x8335…2913) on Base mainnet with a maxAmountRequired of 20000 base units (i.e., $0.02 given USDC's 6 decimals). The payment timeout is 300 seconds. No OpenAPI spec, detailed documentation, or example responses were found in the crawl — the docs, pricing, and API pages all rendered only a wallet-connect prompt with no substantive content.","tags":[],"capabilities":["forex-rate","gbp-usd","x402-payment","usdc-base","pay-per-call","no-api-key","micropayment"],"categories":["finance","forex"],"synonyms":["GBP USD exchange rate","pound dollar rate","forex API","currency exchange rate","FX rate","foreign exchange","GBPUSD spot rate"],"warnings":["No OpenAPI or schema documentation available — response format for GBP/USD data is unknown","Docs, pricing, and API pages render only a wallet-connect prompt with no substantive content","No example requests or responses could be sourced; callers must discover the response format empirically"],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/GBPUSD","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/forex/GBPUSD","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and the docs/pricing pages are empty wallet-connect stubs. The actual data returned by this forex endpoint is entirely unknown, making this 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":"2026-04-19T04:50:44.297Z","embedding":[-0.027709961,-0.020324707,0.04458618,-0.0051498413,-0.009010315,-0.028289795,0.0027885437,0.025054932,0.070007324,-0.05001831,0.020858765,-0.040496826,-0.04220581,-0.03173828,0.010047913,0.011207581,-0.033843994,0.0066375732,-0.042297363,0.021911621,0.011734009,-0.047821045,-0.021957397,0.027572632,0.01235199,-0.041229248,0.011940002,-0.016662598,-0.023117065,-0.028930664,0.044891357,-0.00730896,-0.0051574707,0.01939392,-0.028686523,-0.022125244,0.0062065125,0.025222778,0.009757996,-0.029296875,-0.006629944,-0.062683105,0.016235352,-0.009567261,-0.042388916,0.0018291473,0.015991211,-0.018478394,0.03616333,0.0003964901,-0.033569336,0.011482239,0.005092621,-0.002796173,0.0054855347,-0.0024585724,0.02281189,0.01159668,0.014465332,0.0070114136,0.010002136,-0.07891846,-0.014701843,-0.0077590942,0.0076942444,0.043945312,-0.017288208,0.056274414,-0.013153076,0.08453369,0.012481689,0.05517578,0.015182495,-0.0017518997,-0.00381279,-0.0040512085,0.0045318604,0.055145264,0.002445221,-0.025680542,-0.027404785,-0.05355835,-0.07623291,0.004131317,-0.00027942657,-0.042144775,-0.0056037903,0.037109375,-0.010353088,0.047180176,-0.076416016,-0.030014038,-0.012802124,0.010009766,-0.005908966,0.008934021,-0.0103302,0.012641907,0.0045166016,0.022140503,0.027023315,-0.04559326,0.018066406,0.003419876,0.049346924,0.026641846,0.024612427,0.0032310486,-0.008514404,0.027954102,-0.018447876,0.045074463,-0.007610321,-0.010681152,0.03062439,0.0041885376,-0.032562256,0.023376465,-0.019439697,0.02116394,-0.04446411,0.04727173,-0.013076782,0.008300781,0.029510498,-0.028747559,-0.019866943,0.01020813,-0.020050049,0.0003733635,0.021316528,-0.005126953,0.018463135,0.0020389557,-0.020309448,0.026321411,-0.023117065,-0.011047363,-0.04626465,-0.010398865,0.022140503,-0.03817749,0.01033783,0.050109863,-0.09240723,0.03503418,-0.046875,0.028549194,-0.04876709,-0.014633179,-0.023773193,0.017364502,-0.012199402,0.012901306,-0.01448822,-0.01878357,0.0011510849,0.033203125,-0.024124146,0.042022705,-0.024459839,0.054229736,0.03479004,0.017944336,0.016479492,0.0206604,0.0012979507,-0.042266846,-0.08770752,-0.009780884,-0.005104065,-0.01638794,-0.027694702,0.0067481995,-0.0024166107,-0.03781128,-0.026000977,-0.024902344,-0.025466919,-0.053527832,-0.002840042,-0.032043457,0.013473511,-0.011405945,-0.039642334,-0.010513306,-0.02166748,0.04989624,0.027114868,0.01953125,0.023513794,-0.02255249,0.055236816,0.034240723,-0.013618469,-0.020263672,0.032440186,-0.036224365,0.008293152,0.014045715,0.018951416,-0.025970459,0.04525757,0.04135132,0.022903442,-0.024124146,-0.019180298,-0.049926758,-0.03604126,-0.034362793,0.030288696,0.01977539,-0.00058555603,-0.0065956116,-0.036346436,-0.022979736,0.0013332367,-0.009750366,0.014183044,0.020507812,0.013664246,0.02859497,0.039978027,-0.0011196136,-0.057373047,0.000562191,0.039001465,0.017593384,-0.01751709,-0.04727173,0.027359009,0.017700195,-0.0016870499,-0.010047913,-0.007347107,0.044952393,-0.025421143,-0.015945435,-0.008369446,0.009643555,-0.035949707,-0.028549194,-0.014213562,0.002149582,-0.013198853,-0.017868042,-0.024246216,-0.099487305,0.046081543,0.033935547,0.021240234,-0.0146102905,0.0064430237,-0.039794922,-0.02192688,-0.04510498,0.067871094,0.04147339,-0.011978149,-0.030456543,0.024093628,-0.024917603,-0.036071777,-0.0020561218,-0.0016107559,-0.03591919,-0.0335083,0.00033164024,-0.05593872,-0.0022449493,0.026565552,0.015823364,0.06713867,-0.0019550323,-0.046661377,-0.0061416626,0.0058631897,-0.009223938,-0.03213501,-0.016418457,-0.0035514832,-0.00070238113,0.020889282,0.0087890625,-0.016815186,-0.00995636,-0.025772095,0.009819031,0.003490448,-0.006389618,-0.027618408,0.02229309,0.019210815,-0.04574585,0.007461548,-0.013999939,0.049316406,-0.046936035,0.038146973,-0.031555176,-0.012588501,0.06390381,-0.012290955,-0.034179688,-0.014762878,0.009971619,0.018951416,0.045288086,0.00793457,-0.01725769,-0.04333496,0.06512451,-0.026260376,-0.016815186,0.014152527,0.008155823,0.039031982,-0.010673523,-0.07269287,-0.033081055,0.004421234,-0.003353119,0.009819031,-0.01625061,0.034820557,-0.018814087,0.0014562607,-0.018127441,-0.0035266876,-0.010688782,0.020996094,-0.0015544891,0.019592285,-0.015914917,-0.016525269,0.023223877,-0.021438599,-0.012214661,0.02116394,0.025390625,0.023117065,-0.0031929016,-0.009300232,-0.03173828,0.028121948,-0.017913818,0.023712158,0.039001465,0.058441162,0.021072388,-0.029907227,0.01927185,0.026443481,0.0069465637,0.037475586,-0.016815186,0.014099121,-0.054656982,-0.064086914,-0.021591187,-0.042297363,0.04800415,-0.0033473969,-0.017318726,0.033721924,0.017852783,-0.02458191,-0.085998535,0.0058937073,-0.050842285,0.0044174194,0.047668457,-0.030532837,-0.0005784035,0.02017212,-0.012252808,0.005744934,0.060638428,0.043182373,0.01638794,0.07763672,0.025009155,0.0069351196,0.0025253296,0.00919342,0.034423828,0.0155181885,-0.013473511,-0.013961792,-0.049682617,0.018737793,-0.029144287,-0.019058228,-0.08343506,0.07086182,0.018432617,0.10827637,0.037109375,0.008422852,0.055633545,-0.015945435,-0.010421753,-0.023895264,-0.029312134,-0.020431519,-0.046936035,0.017044067,-0.010108948,0.028198242,-0.01878357,0.013641357,-0.0064086914,0.010917664,-0.024993896,0.023513794,0.009414673,-0.02217102,-0.010673523,0.051940918,0.052703857,0.06317139,-0.020339966,0.0362854,0.037109375,-0.025009155,0.026153564,-0.010421753,-0.0078048706,-0.006969452,-0.034088135,-0.02558899,-0.014656067,-0.011161804,-0.014129639,-0.0063476562,0.041290283,0.009735107,0.03253174,-0.007762909,-0.006500244,-0.0020484924,-0.00484848,-0.04626465,0.022094727,-0.047576904,0.028045654,0.04373169,0.0037326813,0.019454956,0.009086609,0.02078247,-0.017608643,0.027526855,0.01789856,0.002811432,-0.026321411,0.023956299,-0.007633209,0.0014448166,0.0206604,0.024749756,0.0072517395,0.016586304,0.037322998,0.022979736,-0.017684937,-0.04675293,0.030960083,-0.051849365,0.016479492,0.029769897,-0.023864746,-0.008460999,-0.02357483,-0.03152466,-0.0068626404,0.02154541,-0.020996094,-0.0014791489,0.013793945,0.0010786057,-0.03656006,-0.062683105,-0.007286072,-0.015655518,0.058380127,0.027267456,0.008888245,-0.052368164,-0.008613586,0.029388428,0.008712769,0.009109497,-0.011787415,-0.0021972656,-0.0034885406,-0.041381836,-0.022598267,-0.004436493,0.036468506,-0.03515625,-0.015960693,0.02659607,0.00579834,-0.0023937225,0.010246277,0.009414673,-0.0077934265,-0.050109863,0.0029773712,0.0022354126,0.060302734,-0.002292633,-0.022872925,-0.03866577,0.024536133,0.0113220215,0.014289856,-0.034362793,-0.0073165894,-0.015853882,0.010276794,-0.008338928,-0.0048294067,-0.014526367,-0.023406982,-0.068603516,-0.09289551,0.04550171,-0.028793335,0.035980225,0.033569336,-0.004623413,0.023071289,-0.009094238,-0.014785767,0.010253906,-0.03112793,-0.033416748,-0.049987793,-0.04043579,-0.03540039,-0.014968872,-0.005428314,0.017593384,0.007621765,0.016693115,0.011238098,-0.017242432,-0.0033931732,-0.008682251,-0.004219055,0.010101318,0.0062179565,0.036132812,0.036590576,0.017791748,-0.037231445,0.013214111,0.002117157,0.014823914,-0.004463196,0.04208374,0.013137817,0.00011944771,-0.008514404,-0.011703491,0.0013494492,-0.043518066,-0.006511688,0.0012464523,0.011833191,0.0030612946,-0.024154663,0.02128601,0.005756378,-0.04925537,-0.025375366,0.017242432,0.015586853,-0.029296875,0.012329102,0.004016876,0.03765869,-0.035186768,0.013076782,-0.00945282,0.0066947937,0.0082092285,0.021881104,-0.019729614,-0.0014858246,0.004146576,0.018844604,0.016601562,-0.022415161,0.00598526,0.023025513,0.033996582,0.011581421,-0.0018081665,-0.015838623,-0.040924072,0.007293701,-0.015037537,-0.020736694,0.036071777,0.02104187,0.026306152,-0.013763428,0.00774765,-0.0013875961,-0.017654419,-0.030029297,-0.0009813309,0.023284912,-0.031463623,-0.00061273575,0.0048332214,0.024780273,0.032409668,-0.045837402,0.002281189,-0.00062322617,0.0061416626,-0.04244995,-0.04812622,-0.027191162,0.002878189,0.034484863,-0.006881714,0.026306152,0.021499634,0.007801056,0.016342163,0.011489868,0.0019035339,-0.016586304,-0.024673462,-0.03894043,-0.01625061,-0.0017175674,0.0013618469,-0.04449463,0.0032691956,-0.015625,-0.022064209,0.0066070557,-0.0075912476,0.010643005,-0.006000519,0.013641357,0.037261963,-0.0064430237,0.018539429,-0.017089844,-0.02885437,0.006916046,0.00052022934,0.021194458,-0.058532715,0.00818634,-0.013343811,0.0025405884,-0.007598877,0.005794525,0.016342163,0.042633057,-0.0016832352,0.016693115,-0.034576416,0.043029785,-0.027786255,-0.0074882507,0.00843811,-0.029083252,0.0014514923,-0.048065186,0.014816284,0.030838013,-0.02470398,0.0049591064,-0.03439331,-0.051879883,-0.014312744,-0.0473938,0.0032367706,0.011886597,0.036193848,-0.03173828,0.009613037,-0.03302002,-0.003200531,-0.0037269592,0.008872986,-0.008224487,0.02545166,0.026870728,0.009780884,-0.021728516,-0.025131226,-0.040039062,-0.00073719025,-0.033294678,-0.056518555,-0.014511108,-0.00072193146,-0.006832123,0.010139465,-0.035125732,-0.010574341,0.0042686462,-0.040496826,0.0011816025,-0.012886047,0.014541626,-0.002111435,-0.0024375916,-0.0073051453,0.003900528,-0.002904892,0.025222778,0.026901245,0.003326416,-0.048919678,-0.000541687,-0.0013780594,0.023071289,-0.011543274,-0.015029907,0.0019245148,-0.016662598,-0.029891968,-0.0034103394,-0.0104522705,-0.012145996,-0.011123657,-0.0043029785,-0.028717041,-0.010414124,-0.017364502,0.016586304,-0.017440796,0.0015087128,0.013534546,0.00548172,0.009681702,-0.012245178,-0.00484848,-0.03012085,0.034240723,0.00793457,0.0043144226,0.038085938,0.047943115,0.0018005371,-0.015457153,0.01448822,-0.01007843,0.0025482178,-0.0107421875,0.008331299,-0.0051002502,0.008049011,0.0006246567,-0.0041542053,-0.025634766,0.0013847351,0.06414795,-0.01977539,-0.014526367,-0.01159668,-0.040985107,0.00484848,0.029907227,-0.022201538,-0.011817932,-0.04095459,0.022857666,-0.024108887,0.022460938,-0.0006403923,0.027572632,-0.004131317,-0.049804688,-0.0070343018,-0.0005378723,-0.0067253113,-0.05517578,-0.029220581,-0.05795288,0.014511108,-0.01537323,-0.01260376,0.015220642,0.013702393,-0.020019531,-0.08428955,-0.006500244,0.04309082,0.0028095245,0.023849487,-0.0047950745,0.012245178,0.021865845,-0.021377563,0.0143585205,0.030441284,-0.008895874,-0.021209717,-0.006587982,0.027450562,-0.0035037994,-0.0040359497,0.0035324097,-0.0054855347,0.019088745,-0.0078125,0.020492554,-0.026779175,-0.011161804,-0.016921997,0.034301758,-0.002450943,0.002527237,0.052978516,-0.044952393,0.024230957,0.018981934,0.0005893707,0.0141067505,0.026184082,0.015396118,-0.05456543,0.0016975403,0.012649536,0.032836914,0.047912598,-0.011070251,0.03945923,0.014320374,-0.010520935,0.017028809,-0.009094238,-0.0107421875,-0.019943237,-0.030670166,-0.00021278858,-0.0032348633,-0.005355835,-0.024658203,0.009643555,-0.012306213,0.013031006,0.009727478,0.003156662,-0.028045654,-0.031707764,0.016464233,-0.017959595,-0.0016174316,-0.007381439,0.03237915,0.026687622,0.026046753,0.016296387,-0.024536133,-0.01725769,0.05328369,0.006198883,0.0014324188,0.026977539,0.007282257,-0.004142761,0.026260376,0.011833191,-0.039520264,-0.016860962,-0.03451538,-0.022964478,0.0024738312,-0.007881165,-0.0064697266,0.0046081543,0.0029335022,-0.004901886,-0.0009698868,0.0062179565,-0.018478394,-0.031341553,0.017852783,0.0026988983,0.0049209595,0.024383545,0.0005955696,0.0052986145,-0.0005879402,0.021575928,-0.018539429,-0.03540039,0.02583313,0.026046753,-0.0012683868,-0.014930725,0.009315491,0.0047035217,-0.017684937,0.003967285,-0.03768921,0.018127441,0.03503418,-0.020339966,0.018722534,0.023406982,0.037750244,-0.016296387,0.023880005,0.007434845,-0.0051231384,0.020706177,0.029266357,-0.06011963,0.020996094,-0.009498596,-0.0018129349,-0.025558472,-0.010070801,-0.025283813,0.026382446,0.016708374,0.0026779175,0.035125732,-0.004966736,0.013511658,-0.010314941,-0.01940918,-0.0034828186,-0.0009713173,-0.006965637,0.021865845,-0.005355835,0.016647339,0.0126953125,-0.006099701,0.0121154785,-0.029953003,0.032989502,0.016143799,-0.010032654,-0.023849487,-0.050231934,0.010864258,-0.0073165894,-0.026153564,0.006099701,0.009887695,0.018157959,0.03579712,0.006706238,0.034057617,0.0017843246,-0.011367798,-0.028045654,-0.017471313,0.0104599,-0.027694702,0.007160187,-0.00982666,0.06439209,0.03439331,-0.007358551,0.060699463,0.039123535,0.04598999,-0.0013780594,0.012008667,-0.0056877136,0.025390625,-0.0087509155,0.04348755,-0.015327454,0.04156494,-0.03137207,0.018249512,0.019546509,0.042541504,-0.017868042,0.024276733,0.07647705,0.028549194,-0.009223938,0.047546387,-0.011131287,-0.0016069412,-0.0004518032,-0.013793945,0.04638672,0.018737793,0.041870117,0.030792236,0.016784668,-0.01524353,0.0010118484,-0.009437561,-0.025558472,0.0637207,0.032287598,-0.023025513,-0.00047445297,-0.0071868896,-0.0062828064,-0.049072266,-0.027404785,-0.0034255981,-0.008361816,0.012420654,-0.015434265,-0.01524353,-0.011909485,0.009468079,0.007118225,0.022567749,-0.008758545,0.023864746,0.028289795,0.00415802,0.016296387,0.016937256,0.027282715,-0.009178162,-0.017532349,0.011650085,0.016525269,-0.009307861,-0.024276733,0.0054626465,0.03375244,0.055236816,0.024002075,-0.020507812,-0.0012741089,0.03994751,0.013793945,-0.01512146,0.047607422,0.029144287,0.019241333,0.05609131,0.0017127991,0.030349731,-0.015975952,0.0129470825,0.0019207001,-0.00031518936,-0.0006685257,0.013832092,0.024215698,-0.020385742,0.033172607,-0.0038547516,-0.0066947937,0.013412476,0.016082764,-0.025283813,-0.01473999,0.010612488,0.010246277,-0.01675415,-0.012901306,0.016204834,-0.025924683,0.03866577,0.02571106,0.031433105,-0.011558533,0.027114868,0.013130188,-0.017105103,0.0099105835,0.0103302,-0.03289795,0.043823242,0.0026168823,0.000052571297,-0.03414917,0.026260376,0.026733398,-0.012062073,0.0071792603,-0.0045051575,-0.0063438416,0.018676758,0.024291992,0.01158905,0.009506226,-0.00087594986,-0.0063667297,0.022537231,0.049346924,0.0013904572,-0.00466156,-0.014762878,-0.008049011,-0.007911682,0.006175995,-0.036132812,-0.004508972,-0.009994507,-0.054138184,0.015052795,0.022125244,0.023498535,0.04916382,-0.014320374,-0.008323669,0.016647339,0.04525757,0.026000977,-0.013961792,0.004371643,0.020080566,-0.0028076172,0.037994385,0.034851074,0.0063667297,0.039642334,0.009590149,-0.011795044,-0.010444641,-0.000038683414,0.008598328,-0.024627686,0.014892578,0.014976501,0.04598999,-0.01890564,-0.043670654,-0.008544922,-0.026565552,-0.009284973,-0.029083252,-0.0058288574,0.0049057007,0.025344849,0.025466919,0.009567261,-0.016281128,0.051940918,0.0018472672,0.05279541,0.0075302124,-0.011405945,0.045074463,0.018829346,0.0116119385,0.010070801,0.008735657,-0.045684814,0.015640259,0.013534546,0.022369385,0.015281677,0.00592041,-0.016815186,0.043640137,-0.0011892319,0.0234375,-0.013832092,-0.012107849,0.023117065,-0.027374268,-0.007411957,0.0061683655,-0.0040016174,-0.009048462,0.024093628,-0.023162842,-0.0019626617,-0.003408432,-0.005252838,0.03353882,-0.007133484,-0.008117676,0.0021705627,0.0035209656,0.012413025,-0.015586853,-0.026000977,0.01675415,0.012565613,-0.04498291,-0.0019350052,-0.0022678375,0.029693604,-0.025115967,0.017501831,0.03186035,0.008842468,-0.006755829,0.046813965,-0.0052452087,0.016082764,-0.018295288,0.02520752,0.02720642,0.008895874,-0.00043344498,0.010177612,0.018127441,-0.0154800415,0.016998291,0.042510986,-0.028503418,0.017074585,-0.0028858185,0.0027809143,0.0045280457,0.0121536255,-0.01876831,0.0067253113,-0.019607544,-0.007434845,-0.0109939575,-0.003967285,-0.00012278557,-0.004257202,-0.01777649,-0.0044670105,0.002658844,0.034057617,0.014701843,-0.037261963,0.00094366074,-0.0099105835,0.008125305,-0.025634766,-0.0005970001,0.023132324,-0.037231445,0.010307312,0.010421753,0.020843506,0.016540527,-0.014564514,0.019836426,0.018920898,0.014152527,0.027816772,0.0037574768,0.01222229,0.019317627,-0.011154175,-0.013221741,0.006416321,0.000995636,0.028167725,-0.00015330315,-0.0039749146,-0.031311035,0.025604248,-0.0066947937,0.023971558,0.0055770874,0.0088272095,0.04058838,0.0011081696,0.011703491,0.008125305,0.002981186,-0.030014038,-0.0054855347,0.00094890594,0.03527832,0.04574585,-0.025283813,-0.007118225,0.04119873,0.027450562,0.027694702,0.0211792,0.028305054,0.037719727,0.048217773,-0.0030231476,-0.033416748,0.03878784,-0.0152282715,0.0028686523,0.004306793,-0.0067367554,-0.0121536255,0.021591187,0.012458801,0.009590149,-0.0132751465,0.0044555664,-0.032226562,-0.01966858,0.014060974,-0.009391785,-0.019302368,-0.00605011,-0.010543823,-0.01007843,-0.033050537,-0.029129028,0.003004074,-0.009010315,-0.026779175,-0.039215088,0.014045715,-0.014717102,0.019241333,-0.040283203,0.013298035,-0.005027771,0.020767212,-0.009506226,-0.004348755,-0.005367279,0.004962921,0.035491943,-0.0005354881,0.02709961,-0.03274536,-0.03842163,-0.031219482,-0.009506226,-0.01675415,0.022613525,0.0069236755,0.0070762634,-0.0013561249,-0.013069153,-0.0037994385,0.011047363,-0.038848877,-0.0126953125,-0.019607544,-0.019180298,0.02494812,0.02015686,-0.011871338,-0.009056091,0.027328491,-0.013702393,-0.020492554,0.04647827,0.030029297,0.012039185,0.031341553,0.0017690659,-0.006324768,0.01828003,0.020080566,-0.026611328,-0.013023376,0.029342651,0.0011177063,-0.011383057,0.035217285,0.021697998,-0.005794525,-0.00069475174,0.022415161,0.0070495605,0.0014953613,0.036865234,0.002275467,-0.0052337646,0.0013465881,0.0031204224,0.0072135925,0.04147339,0.011070251,0.0012578964,0.0006685257,0.0005917549,-0.0362854,0.00024962425,0.035125732,-0.0018892288,-0.032989502,-0.0040779114,-0.021560669,-0.0004415512,-0.015853882,0.007381439,-0.011360168,0.016860962,-0.013153076,-0.033477783,-0.01928711,0.032196045,0.009017944,0.0068511963,-0.030532837,0.0070114136,-0.0075149536,-0.03213501,0.011512756,-0.034606934,-0.030441284,0.008552551,-0.01939392,0.0021533966,0.012939453,0.009483337,-0.007789612,-0.00061130524,-0.018692017,0.00051784515,0.026428223,-0.0048599243,0.00466156,0.020507812,0.03668213,-0.00067710876,0.0030059814,-0.026550293,-0.0042381287,0.0042037964,0.005630493,0.017288208,-0.02545166,0.027069092,0.000023066998,-0.00008392334,0.004749298,-0.039276123,0.008621216,-0.05609131,0.0077171326,-0.00724411,-0.02217102,0.02885437,-0.020355225,-0.033996582,-0.01222229,-0.039611816,-0.02243042,0.024658203,0.008926392,0.031951904,0.004962921,0.035339355,-0.030014038,-0.017959595,0.026519775,-0.013572693,-0.01121521,0.021270752,0.004917145,-0.007881165,0.013465881,-0.03302002,0.00024008751,-0.029556274,-0.008575439,0.011871338,-0.005241394,-0.001376152,0.018676758,0.0044555664,0.03842163,0.006706238,0.031402588,0.010215759,0.011001587,0.016311646,0.011734009,0.028503418,0.006362915,-0.031051636,0.0026512146,-0.007171631,-0.030838013,0.0033988953,-0.02180481,-0.01689148,-0.019088745,0.002046585,-0.008926392,0.018188477,-0.010688782,0.01448822,-0.018600464,0.004875183,-0.05947876,-0.014205933,-0.03289795,-0.009117126,0.032592773,-0.012207031,0.029312134,0.012901306,-0.021713257,-0.0006084442,0.01751709,0.0016126633,-0.032043457,-0.011047363,0.007335663,0.018417358,-0.0033664703,0.03729248,-0.0141067505,-0.008079529,0.009033203,-0.012458801,0.023986816,-0.0062065125,0.044067383,0.017852783,-0.0055351257,-0.01209259,0.028289795,-0.020980835,-0.009841919,0.021255493,0.026046753,0.032836914,0.042022705,-0.011428833,-0.0047416687,0.014823914,-0.043701172,0.058441162,-0.001876831,0.02104187,-0.013877869,-0.0033359528,-0.043518066,-0.030700684,-0.012969971,-0.007972717],"createdAt":"2026-04-18T18:46:44.379Z","updatedAt":"2026-04-29T13:34:31.230Z","lastSeenAt":"2026-04-29T13:34:31.230Z","tsv":"'0.02':59,121,177 '0x8335':164 '20000':173 '2913':165 '300':187 '6':181 'FX rate' 'GBP USD exchange rate' 'GBPUSD spot rate' 'account':69 'advertis':161 'ai/ml':109 'analyt':108 'api':67,102,206 'attach':76 'avail':149 'base':13,28,64,167,174 'bid/ask':138 'broader':99 'call':4,19,56 'caller':75 'challeng':153 'connect':214 'content':219 'contract':163 'crawl':201 'currenc':131 'currency exchange rate' 'data':40,107,113 'decim':182 'detail':192 'doc':203 'document':146,193 'endpoint':8,23,32,94,127 'etc':143 'exact':135 'exampl':195 'exchang':38 'finance/crypto':111 'foreign':37 'foreign exchange' 'forex':6,21,126 'forex API' 'forex-rate' 'form':159 'found':198 'gbp-usd' 'gbp/usd':5,20,36,130 'given':178 'header':81 'i.e':176 'infer':110 'json':91 'key':68 'limit':72 'live':155 'lowpaymentfee.com':34,105 'mainnet':168 'market':112 'materi':150 'maxamountrequir':171 'micropay':57 'micropayment' 'mid':140 'mid-rat':139 'need':74 'network':65 'no-api-key' 'offer':103 'openapi':190 'page':207 'pair':132 'part':96 'pay':2,17 'pay-per-cal':1,16 'pay-per-call' 'payment':50,80,86,184 'per':3,18,55,122 'per-cal':54 'post':44 'pound dollar rate' 'price':118,204 'prompt':215 'proof':87 'protocol':51 'provid':35 'rate':7,22,39,71,141 'receiv':89 'render':209 'request':45,123 'requir':52 'respons':92,136,196 'schema':137 'second':188 'serv':128 'servic':116 'settl':9,24 'simpl':43 'span':106 'spec':191 'specif':125 'substant':218 'suit':100 'though':133 'timeout':185 'timestamp':142 'uniform':119 'unit':175 'usdc':11,26,61,162,179 'usdc-base' 'use':47 'util':115 'valid':84 'via':14,29,41 'wallet':213 'wallet-connect':212 'well':158 'well-form':157 'x':79 'x-payment':78 'x402':15,30,49,85,152 'x402-payment'","prices":[{"id":"205d5978-f341-4d1a-854e-92aa48db7f1e","listingId":"5f1bd7cc-f4dc-44db-a5d1-ed1d7b32ac0b","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/forex/GBPUSD","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:44.379Z"}],"sources":[{"listingId":"5f1bd7cc-f4dc-44db-a5d1-ed1d7b32ac0b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/GBPUSD","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:44.379Z","lastSeenAt":"2026-04-29T13:34:31.230Z"}],"details":{"listingId":"5f1bd7cc-f4dc-44db-a5d1-ed1d7b32ac0b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/GBPUSD \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge advertising USDC on Base, maxAmountRequired 20000 (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/forex/GBPUSD"},{"claim":"All APIs priced at $0.02/request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/forex/GBPUSD"}],"useCases":["Fetching the current GBP/USD exchange rate for trading bots or financial dashboards","Programmatic currency conversion in payment or invoicing applications","Agent-driven forex data retrieval without pre-registration or API keys","Embedding real-time FX data into smart-contract or DeFi workflows"],"bestFor":["Developers needing quick, keyless access to GBP/USD rates","AI agents that can settle micropayments on Base","Applications requiring pay-as-you-go forex data with no subscription"],"notFor":["High-frequency trading requiring sub-millisecond latency or bulk historical data","Users who need comprehensive multi-pair forex coverage from a single documented API","Anyone unable to settle USDC payments on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:17.787Z"},"updatedAt":"2026-04-29T13:34:31.230Z"}}