{"id":"9a80492c-fd3b-4e2d-956e-5548d87160ab","shortId":"Y8uT2a","kind":"x402","title":"x402-gated transaction receipt endpoint on Base, paying $0.02 in USDC per request.","tagline":"x402-gated transaction receipt endpoint on Base, paying $0.02 in USDC per request.","description":"This endpoint at lowpaymentfee.com provides a transaction receipt resource (transaction ID 349) behind an x402 paywall. It is part of a broader platform that offers a variety of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per call, settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/transactions/349/receipt` accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header with a valid payment proof. The x402 challenge advertises a max amount of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nThe platform advertises no API keys, no rate limits, and instant access. Documentation pages (/docs, /pricing, /api, /README) all appear to require a wallet connection and contain no substantive content in the crawl. As a result, there is no detailed schema documentation, no example request/response payloads, and no clarity on what data the receipt endpoint actually returns. The endpoint is confirmed live (402 challenge captured).","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","transaction-receipt","pay-per-request","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 payment endpoint","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee"],"warnings":["No API documentation available — all doc pages require wallet connection and are empty in crawl","No request or response schema documented for this endpoint","The specific resource (transaction 349 receipt) is opaque — unclear what data it returns or what input it expects","Platform lists many endpoints but none have detailed documentation in the crawl"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/349/receipt","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/transactions/349/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing. However, there is no documentation, no request/response schema, and the purpose of this specific receipt endpoint is unclear. All doc pages require wallet connection and yield no content.","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":"2026-04-19T13:22:25.102Z","embedding":[-0.028274536,-0.030151367,0.028823853,0.014732361,-0.0018091202,-0.018936157,-0.007499695,0.03817749,0.06112671,-0.077697754,0.022064209,-0.02720642,-0.031829834,-0.026260376,-0.029052734,0.013397217,0.010810852,0.030044556,-0.049194336,0.052764893,0.02772522,-0.0357666,-0.026763916,0.027816772,-0.006061554,-0.0138168335,-0.01171875,-0.008796692,-0.044830322,-0.028533936,0.038116455,-0.01890564,-0.025970459,0.00843811,-0.008506775,0.026748657,-0.012496948,0.020904541,0.023834229,-0.015457153,-0.009933472,-0.036956787,-0.0025310516,-0.011505127,-0.04458618,0.013793945,-0.0009741783,-0.02532959,-0.0027503967,0.0046157837,-0.050354004,-0.012908936,-0.0211792,0.018051147,0.004016876,0.007385254,0.0065574646,0.0048332214,0.027618408,0.007835388,0.0038547516,-0.059692383,-0.0020923615,-0.013092041,-0.004673004,0.055999756,-0.011726379,0.06530762,0.023010254,0.07543945,0.037078857,0.03942871,0.05154419,0.011878967,0.008430481,-0.014381409,0.011245728,0.03643799,-0.03451538,-0.026535034,0.0044898987,-0.034698486,-0.076660156,-0.01058197,-0.029174805,-0.060760498,-0.028045654,0.0045661926,-0.016693115,0.037994385,-0.070739746,0.0019006729,0.008583069,0.03463745,-0.009780884,-0.038330078,-0.05343628,-0.005077362,-0.0072669983,0.008590698,0.003118515,-0.041778564,0.046569824,0.003583908,0.042755127,0.028411865,-0.007545471,0.021209717,0.004322052,0.0025920868,-0.006248474,0.027236938,0.025726318,-0.023712158,0.0259552,-0.010757446,-0.020263672,0.023254395,-0.021499634,0.034973145,-0.04598999,0.06951904,-0.004550934,-0.016479492,-0.001496315,-0.04623413,-0.04006958,-0.002439499,-0.021377563,0.00623703,0.03970337,0.01966858,0.01309967,-0.016601562,-0.01235199,0.007068634,-0.011993408,-0.019577026,-0.033416748,-0.029785156,0.02470398,-0.036315918,-0.0039634705,0.041900635,-0.081970215,-0.0014972687,-0.055114746,0.0047302246,-0.013847351,-0.015808105,0.011154175,0.00793457,-0.023025513,-0.017410278,-0.014564514,-0.015586853,-0.0044670105,0.048217773,-0.0028209686,0.016693115,-0.029846191,0.033294678,0.027633667,0.011131287,0.028335571,0.021865845,-0.012741089,-0.0758667,-0.0791626,0.0013208389,0.017486572,-0.02255249,-0.043914795,0.012176514,-0.029052734,-0.07891846,-0.025741577,0.019134521,0.013900757,-0.044006348,-0.007286072,-0.041809082,0.012763977,-0.022369385,-0.03189087,-0.024124146,-0.04083252,0.053649902,0.022613525,0.028518677,0.011138916,-0.010253906,0.030807495,0.024658203,-0.00077724457,-0.02796936,0.0082473755,-0.011161804,0.02859497,-0.005558014,0.014335632,-0.020339966,0.020980835,0.08312988,-0.0058021545,-0.041259766,0.008453369,-0.03503418,-0.034820557,-0.013473511,0.02178955,0.017822266,-0.01852417,0.01576233,-0.03970337,0.0051612854,0.031173706,0.024429321,0.0022563934,0.058410645,0.006542206,-0.008743286,0.014297485,0.023605347,-0.039733887,0.05706787,0.03704834,0.03112793,-0.027008057,-0.050689697,0.010765076,0.034301758,-0.033966064,0.0044403076,-0.016464233,0.044799805,-0.0016527176,-0.006679535,0.025222778,-0.0069236755,-0.028152466,-0.021087646,0.006137848,0.02494812,0.010253906,-0.022247314,-0.05734253,-0.07312012,0.06591797,0.05545044,0.005622864,-0.001791954,-0.012428284,-0.029220581,-0.0076408386,-0.08026123,0.04534912,0.07159424,-0.0049324036,-0.03451538,0.057434082,-0.02319336,-0.044799805,-0.0019083023,-0.021987915,-0.022567749,-0.0017080307,-0.005367279,-0.033081055,0.016616821,-0.012840271,0.0029659271,0.050842285,0.011390686,-0.043914795,0.00030255318,-0.014640808,0.010070801,-0.03829956,-0.012931824,0.015571594,0.015853882,0.02532959,0.01965332,0.005596161,0.032043457,0.0031585693,-0.02418518,0.0178833,0.00623703,-0.028274536,0.014846802,0.012039185,-0.04244995,0.012031555,-0.008628845,0.05722046,-0.061309814,0.041534424,-0.033111572,0.0056419373,0.058654785,-0.0075683594,-0.050231934,0.0010204315,0.023803711,0.007408142,0.02078247,0.030899048,0.0062789917,-0.03010559,0.050048828,-0.015838623,0.0019483566,0.016189575,0.02796936,0.044158936,-0.005054474,-0.052581787,-0.047546387,0.025360107,-0.01373291,0.0317688,-0.01260376,0.038391113,-0.014411926,-0.00054740906,-0.039245605,0.0076141357,-0.011932373,0.011665344,-0.012550354,-0.009422302,-0.035186768,-0.025848389,0.032928467,0.011734009,-0.019424438,-0.003736496,0.066833496,0.012191772,-0.015174866,-0.024841309,-0.032836914,-0.035217285,-0.011230469,0.02017212,0.013397217,0.017929077,0.026519775,-0.033416748,0.016159058,0.014564514,-0.030197144,0.041168213,0.011695862,0.004055023,-0.0670166,-0.034240723,-0.009483337,-0.051452637,0.0413208,0.026443481,0.0068092346,0.061523438,0.007423401,-0.044006348,-0.015701294,0.030380249,-0.04324341,0.008293152,0.048309326,-0.017700195,-0.011726379,-0.0019035339,0.0018968582,0.0154953,0.02961731,0.032470703,0.023529053,0.061584473,0.04119873,0.006462097,0.012954712,0.018432617,0.024887085,-0.01020813,-0.022766113,-0.018630981,-0.041778564,0.028182983,-0.032409668,-0.028427124,-0.05065918,0.04598999,0.043823242,0.062683105,0.011688232,0.016555786,0.044799805,0.018844604,0.02041626,-0.00042796135,-0.033935547,-0.03881836,-0.023956299,0.022705078,-0.013938904,-0.003665924,-0.015472412,0.008735657,0.016464233,0.0049324036,-0.024597168,0.056915283,-0.019332886,-0.012779236,0.029403687,0.02494812,0.037902832,0.03555298,-0.025817871,-0.0069885254,0.020980835,-0.03677368,0.013793945,0.012145996,-0.0005168915,-0.007820129,-0.05050659,-0.040161133,0.0025577545,-0.01146698,-0.05480957,0.00027227402,0.0158844,0.03540039,0.016937256,-0.041229248,-0.037963867,0.013977051,-0.021606445,-0.036468506,0.002691269,-0.05697632,0.006450653,0.032592773,-0.03692627,0.03363037,-0.002714157,0.019500732,-0.015853882,0.011917114,-0.005264282,-0.016860962,-0.027313232,0.021224976,0.01159668,0.003835678,0.0057754517,0.022415161,0.02178955,0.039978027,0.028564453,0.016082764,-0.01020813,-0.0579834,0.03765869,-0.032073975,-0.014984131,0.02255249,-0.022521973,0.0068969727,-0.0048065186,-0.015731812,-0.02420044,-0.002380371,-0.013938904,-0.0005159378,0.02130127,-0.037322998,-0.018051147,-0.05307007,-0.033843994,-0.007446289,0.061157227,0.013946533,-0.00026774406,-0.06298828,-0.006198883,0.03338623,0.006931305,-0.00018453598,-0.01411438,-0.018203735,-0.0076904297,-0.008468628,-0.027160645,-0.004764557,0.029281616,-0.000854969,0.0069236755,0.013259888,0.016921997,0.0031661987,0.016601562,-0.015319824,0.02720642,0.0036468506,-0.013076782,0.008140564,0.029327393,0.018478394,-0.02909851,-0.03463745,0.050872803,-0.026641846,0.037200928,-0.044921875,-0.014770508,0.009162903,0.016143799,0.006515503,-0.015129089,-0.011054993,0.00919342,-0.03439331,-0.07543945,0.041503906,-0.0051498413,0.03656006,0.030151367,0.004283905,0.03668213,-0.009414673,0.016296387,0.0050735474,-0.039733887,-0.027770996,-0.032958984,-0.03656006,-0.033325195,-0.00038719177,-0.03050232,0.00969696,-0.009719849,0.009010315,-0.005794525,-0.030410767,0.04574585,-0.013343811,0.0021762848,0.016204834,0.010719299,0.016464233,0.0262146,0.011062622,-0.043701172,0.030380249,-0.012741089,0.005962372,-0.0045814514,0.016784668,0.020584106,-0.03567505,0.015037537,-0.008651733,0.005619049,-0.021408081,-0.015060425,-0.0054016113,0.011619568,0.008117676,-0.044891357,0.017715454,0.014434814,-0.03338623,-0.04058838,0.01675415,0.012535095,-0.036499023,0.016052246,0.030761719,0.049438477,0.0036849976,0.0014410019,0.0043296814,0.04434204,0.041656494,0.0055503845,-0.0046806335,0.033477783,-0.010025024,0.03286743,0.008255005,-0.007633209,0.0052833557,0.010147095,0.016952515,0.018447876,0.010726929,0.0002706051,-0.04837036,-0.013031006,0.017349243,-0.013008118,0.033935547,0.0027656555,0.034576416,-0.0146102905,0.020431519,0.02583313,-0.030273438,-0.005569458,-0.0036125183,0.037384033,-0.00037765503,-0.00831604,0.006515503,0.0206604,0.033447266,-0.055999756,-0.008705139,-0.0022068024,0.0046310425,-0.00047779083,-0.04876709,-0.016937256,-0.014770508,0.030426025,0.0032978058,-0.0064353943,0.036621094,0.006351471,-0.004180908,0.029434204,0.008407593,-0.0021629333,-0.0013208389,-0.04147339,-0.01676941,-0.0069732666,0.017150879,-0.027252197,0.03060913,-0.0135650635,0.0032444,0.008964539,-0.039093018,0.0026512146,-0.02319336,-0.010292053,0.038604736,-0.013679504,0.0021457672,-0.0115737915,-0.033081055,0.004299164,0.020248413,0.013343811,-0.021438599,0.03274536,-0.0017080307,-0.0063934326,-0.020233154,0.012565613,0.011116028,0.008262634,0.008804321,0.037963867,-0.035125732,0.038208008,-0.01386261,0.011795044,0.0015916824,-0.020095825,-0.01637268,-0.04458618,-0.02003479,0.04449463,0.001074791,0.005256653,-0.026062012,-0.046844482,-0.018615723,-0.055267334,0.010391235,0.006652832,0.038635254,-0.01398468,0.010559082,-0.007888794,0.019836426,0.0032253265,0.0032672882,-0.015716553,0.037902832,0.016098022,0.018218994,-0.003232956,-0.031555176,-0.029891968,-0.00036096573,-0.059326172,-0.03656006,-0.007820129,0.025238037,0.00044631958,-0.005138397,-0.034240723,-0.026260376,-0.0046539307,-0.023803711,0.017807007,-0.012466431,0.008224487,0.012588501,0.0016784668,0.0011262894,0.012771606,-0.016616821,0.038879395,0.015167236,-0.0010585785,-0.0423584,0.01953125,0.01687622,0.006511688,-0.013259888,-0.03149414,0.00806427,-0.0362854,-0.048858643,0.014228821,-0.0075569153,0.0049858093,-0.028076172,0.019042969,-0.053497314,-0.0014505386,-0.056518555,-0.013900757,0.016540527,0.014228821,0.009994507,0.0029697418,0.005836487,0.000705719,-0.00869751,-0.050933838,0.008979797,0.009773254,0.0082473755,0.012512207,0.054656982,0.0070114136,-0.009895325,-0.011955261,-0.024856567,0.012763977,-0.023498535,0.027877808,-0.007369995,0.0048446655,-0.006248474,-0.009178162,-0.038604736,0.012275696,0.05480957,-0.00008904934,-0.003583908,-0.020431519,0.0027484894,0.02255249,0.03640747,-0.03225708,0.01322937,-0.010147095,0.022369385,-0.02192688,0.0029258728,-0.0073051453,0.016525269,-0.022720337,-0.04989624,-0.004886627,-0.014411926,-0.0027599335,-0.06329346,-0.031066895,-0.049346924,0.0042152405,0.0096588135,-0.012191772,0.0052948,0.015357971,-0.025939941,-0.07678223,0.0073890686,0.042907715,0.0043411255,0.024871826,0.00036382675,0.026229858,0.020965576,-0.019989014,-0.02645874,0.0033168793,-0.032226562,-0.004043579,-0.036468506,0.029129028,-0.015823364,-0.014381409,0.015853882,0.01637268,0.019180298,-0.013679504,-0.013282776,-0.02229309,-0.010948181,0.0076446533,0.021942139,-0.013961792,-0.004096985,0.022750854,-0.052520752,0.040161133,0.01008606,0.018737793,0.0064353943,0.028839111,0.04147339,-0.038482666,0.019104004,0.025848389,0.024291992,0.055267334,-0.02758789,0.02130127,0.020507812,0.0090408325,-0.0031585693,-0.0035762787,-0.016937256,-0.036010742,-0.022399902,0.024642944,0.0015239716,-0.010147095,-0.020553589,0.00466156,0.018218994,0.03152466,-0.005218506,-0.018127441,-0.028747559,-0.04272461,0.011779785,0.01675415,-0.00793457,0.0012216568,0.013381958,0.0418396,0.047424316,0.01828003,-0.021697998,0.004524231,0.023498535,-0.010284424,-0.012908936,0.033477783,0.005706787,0.014831543,0.0231781,0.021209717,-0.032287598,-0.023834229,-0.0098724365,-0.020736694,0.016143799,-0.013549805,0.003282547,0.010719299,0.0038871765,0.0022354126,-0.02432251,0.010688782,-0.03567505,-0.035491943,-0.013847351,-0.0101623535,0.02897644,0.0025463104,-0.012313843,0.025497437,-0.013221741,0.05090332,0.002374649,-0.0309906,0.031280518,0.04763794,0.013130188,-0.016616821,-0.0067825317,-0.008857727,-0.019958496,-0.0071525574,-0.022750854,0.035339355,0.008621216,-0.0004503727,0.0046958923,-0.017333984,0.019943237,-0.013946533,0.009017944,-0.006298065,0.0077438354,-0.014602661,0.055999756,-0.03967285,0.029586792,0.022720337,-0.008010864,-0.004600525,0.003768921,-0.025238037,0.031951904,0.014961243,0.0029335022,0.026641846,-0.0057640076,0.040008545,-0.027282715,-0.02330017,-0.008766174,-0.016845703,-0.037872314,-0.009223938,-0.023223877,-0.019714355,0.011886597,-0.02357483,0.02406311,-0.021057129,0.005622864,-0.003692627,-0.0048942566,-0.023406982,-0.01914978,-0.008773804,-0.010787964,-0.017837524,0.011054993,-0.013153076,0.05834961,0.030426025,0.019119263,0.038635254,0.020645142,0.016464233,-0.040130615,-0.03387451,0.000767231,-0.009284973,0.0058898926,-0.019454956,0.057525635,0.05303955,0.012809753,0.042541504,0.010185242,0.03366089,0.00014436245,0.016586304,-0.025299072,0.017807007,-0.020004272,0.03010559,-0.01448822,0.03741455,-0.009048462,0.025863647,0.0103302,0.012321472,-0.016036987,0.026062012,0.07501221,0.019378662,-0.018127441,0.027801514,0.006629944,-0.026184082,-0.024612427,-0.027511597,0.043518066,0.009880066,0.02835083,0.048614502,0.014305115,0.013343811,0.034332275,-0.0023956299,-0.012031555,0.054107666,0.022598267,-0.005054474,-0.021575928,-0.014450073,0.016662598,-0.03805542,-0.0066719055,-0.003692627,-0.022644043,0.0038394928,0.00089883804,-0.0023498535,0.0038547516,0.02507019,0.017181396,0.026489258,-0.012634277,0.025817871,0.0053710938,-0.017059326,0.024124146,0.0072250366,0.026565552,-0.023590088,-0.017959595,0.01159668,0.031829834,-0.0131073,-0.018981934,0.03253174,0.011154175,0.047058105,0.031021118,-0.024475098,-0.007095337,0.027252197,0.0026130676,0.0011558533,0.051208496,0.03366089,0.008430481,0.04345703,0.035705566,0.031051636,-0.020843506,0.008964539,-0.016342163,0.0011510849,-0.023742676,0.006942749,0.018127441,-0.015670776,0.0385437,-0.00044870377,-0.009048462,0.017730713,0.02659607,0.0027389526,-0.0082092285,-0.008865356,0.008285522,-0.015487671,0.0011396408,0.02217102,-0.014945984,0.02420044,-0.003490448,0.029586792,-0.041900635,0.027633667,-0.0043563843,-0.027053833,-0.018203735,0.013046265,-0.044555664,-0.004398346,-0.0011138916,-0.011566162,-0.042419434,0.009841919,0.021331787,-0.02708435,0.01727295,0.005138397,0.0023078918,-0.005382538,0.034606934,0.017059326,-0.0052452087,-0.016921997,-0.023834229,0.0059318542,0.048309326,0.0134887695,-0.017364502,-0.015625,0.007926941,0.0069999695,-0.018371582,-0.012039185,0.012268066,-0.014381409,-0.018035889,0.014457703,0.033935547,0.0038547516,0.046905518,-0.01852417,-0.018493652,0.0016679764,0.04168701,0.006000519,-0.025466919,-0.028564453,0.029541016,-0.031799316,0.05380249,0.040527344,-0.0037822723,0.031921387,0.009628296,-0.020370483,-0.00028395653,-0.023834229,0.016021729,-0.013885498,-0.003768921,-0.011360168,0.019210815,-0.010040283,-0.021209717,-0.0051841736,-0.020187378,-0.015129089,-0.002696991,0.019836426,-0.0019035339,0.019348145,0.047180176,0.008666992,-0.017242432,0.06427002,-0.024642944,0.04949951,0.0030727386,-0.014152527,0.0579834,0.0256958,0.05117798,0.017959595,0.0131073,-0.015670776,0.031921387,0.029922485,0.021011353,0.011695862,0.0048179626,-0.006225586,0.02909851,-0.009735107,0.030044556,-0.001906395,-0.017715454,0.021835327,-0.008804321,-0.011566162,0.0046463013,-0.010574341,0.0004386902,0.05419922,-0.036987305,0.00022435188,-0.022628784,-0.011856079,0.025756836,-0.004924774,-0.004802704,-0.003742218,-0.016098022,0.012718201,-0.010292053,0.003326416,0.013694763,0.033111572,-0.048797607,0.0065193176,0.017929077,0.004219055,-0.011917114,0.024627686,0.032958984,0.004272461,0.007217407,0.038116455,-0.020507812,0.049072266,0.0025138855,0.02835083,0.021820068,0.017440796,-0.008232117,0.017715454,0.015342712,-0.015609741,0.0041503906,0.035980225,-0.016067505,-0.00012266636,-0.0021343231,0.002023697,-0.0065193176,-0.0021362305,-0.018432617,0.017242432,-0.008506775,-0.017501831,0.018814087,0.011070251,0.0074043274,-0.0025024414,0.009552002,0.0010890961,0.023361206,0.02407837,0.034179688,-0.040222168,0.011260986,0.0059814453,-0.008598328,-0.017623901,-0.025436401,-0.0057411194,-0.047943115,0.0061683655,0.0045700073,0.011238098,0.014335632,-0.019897461,-0.015991211,0.01979065,0.017181396,0.016067505,-0.009246826,0.00283432,0.01638794,-0.017532349,0.011276245,-0.01574707,-0.009651184,0.018188477,0.020339966,-0.023406982,-0.021316528,0.00573349,-0.012687683,0.01876831,-0.007293701,0.019134521,0.024887085,-0.0015735626,0.0034427643,0.008018494,0.024291992,-0.02532959,-0.009307861,-0.006790161,0.006690979,0.045074463,-0.007545471,0.006549835,0.007461548,0.02557373,0.019073486,0.028457642,0.020874023,0.04650879,0.026901245,-0.02331543,-0.00843811,0.0045166016,-0.016540527,-0.022247314,0.013374329,-0.032958984,-0.014816284,0.0018959045,0.017684937,-0.011199951,-0.032958984,0.004306793,-0.0024147034,-0.011619568,0.025268555,-0.015075684,0.025039673,-0.019088745,-0.0056648254,0.02835083,-0.016494751,-0.026931763,-0.027770996,-0.02053833,-0.015007019,-0.05215454,0.00655365,-0.026443481,0.021148682,-0.016036987,0.00894165,0.017486572,0.010246277,0.01424408,-0.019989014,0.001408577,0.046173096,0.0035152435,0.020507812,0.02671814,-0.014549255,-0.024780273,-0.009971619,0.004852295,-0.017684937,0.03387451,-0.013336182,0.033355713,0.01637268,-0.04586792,-0.009277344,-0.014717102,-0.018417358,-0.0043144226,-0.014373779,-0.011474609,0.0036563873,0.013587952,0.025421143,0.00055933,0.04864502,-0.021011353,-0.013412476,0.021896362,0.040100098,0.0016326904,0.040039062,-0.008132935,-0.005455017,-0.033935547,-0.0027008057,-0.008460999,0.0020313263,0.004535675,0.012374878,-0.0017929077,0.030151367,0.015991211,-0.019210815,0.010238647,0.030227661,0.021392822,0.018539429,0.031951904,0.010925293,0.0014381409,-0.020477295,-0.013664246,0.0010089874,0.04537964,0.03152466,-0.0019464493,-0.01927185,0.009178162,-0.022079468,0.012702942,0.02003479,-0.019073486,-0.035369873,-0.0061569214,-0.040527344,-0.0008883476,-0.0052337646,0.018997192,0.0015869141,0.015205383,-0.006679535,-0.014854431,-0.019714355,0.03086853,0.019943237,-0.019332886,-0.0019683838,-0.001660347,0.013084412,-0.01852417,-0.00063943863,-0.04385376,-0.035125732,-0.0012788773,-0.012680054,0.038360596,-0.006866455,-0.014259338,-0.009262085,-0.013320923,-0.02468872,0.01701355,0.011451721,-0.013114929,-0.003314972,0.018127441,0.030654907,-0.008880615,0.02999878,-0.009490967,0.010307312,0.015686035,-0.0042495728,0.026306152,-0.009674072,0.02279663,0.011756897,0.00995636,0.024169922,-0.011146545,0.016418457,-0.04434204,-0.014038086,0.013244629,0.0006632805,0.03250122,-0.0070877075,-0.036071777,0.0009784698,-0.027999878,-0.033294678,0.0023651123,0.0053253174,0.02017212,-0.002248764,0.03842163,-0.015365601,-0.018035889,0.010284424,0.01524353,-0.029129028,0.011894226,0.012184143,-0.023117065,0.0068855286,0.004711151,-0.00598526,-0.013900757,-0.022064209,-0.0054779053,-0.010505676,0.006679535,0.00022053719,0.03375244,0.032592773,0.009178162,0.011817932,0.0118255615,0.014587402,0.036743164,0.0049476624,0.043884277,-0.012825012,-0.020126343,-0.011222839,0.008766174,-0.028274536,0.016540527,-0.0060577393,-0.00082302094,-0.038635254,0.00079107285,-0.0010309219,0.028152466,-0.0025539398,0.010826111,-0.014564514,-0.017578125,-0.015098572,-0.0047569275,-0.033721924,0.026977539,0.01663208,0.014060974,0.024475098,-0.0022029877,-0.02116394,0.011886597,0.044158936,-0.0033683777,-0.042053223,-0.02394104,0.007209778,-0.00289917,-0.0025119781,0.0066337585,-0.029815674,-0.006500244,0.002981186,-0.0034656525,-0.014854431,-0.0028095245,0.016464233,0.0052261353,-0.00712204,-0.016616821,0.025482178,-0.0011129379,-0.017578125,-0.010528564,-0.0019779205,0.030014038,0.031921387,-0.00920105,-0.0064926147,0.03213501,-0.036499023,0.06085205,-0.011108398,0.016433716,-0.017211914,0.0024585724,-0.05609131,-0.018127441,0.0064048767,-0.017715454],"createdAt":"2026-04-18T19:26:25.855Z","updatedAt":"2026-04-24T06:32:42.814Z","lastSeenAt":"2026-04-24T06:32:42.814Z","tsv":"'/api':170 '/api/v1/transactions/349/receipt':89 '/docs':168 '/pricing':169 '/readme':171 '0.02':10,24,76,136 '000':125 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':148 '0x8335':130 '20':124 '2913':131 '300':151 '349':40 '402':216 '6':140 'Base network API' 'USDC micropayment API' 'accept':90 'access':165 'actual':209 'address':147 'advertis':119,156 'ai/ml':66 'amount':122 'analyt':65 'api':61,158 'appear':173 'base':8,22,84,126,133 'base-network' 'behind':41 'broader':50 'call':78 'caller':103 'captur':218 'challeng':118,217 'clariti':202 'confirm':214 'connect':178 'contain':180 'content':183 'crawl':186 'data':64,69,205 'decim':141 'detail':193 'document':166,195 'endpoint':6,20,30,62,88,208,212 'equal':135 'exampl':197 'finance/web3':68 'gate':3,17 'given':137 'handl':98 'header':110 'id':39 'includ':105 'infer':67 'infrastructur':71 'instant':164 'json':95 'json-response' 'key':159 'limit':162 'live':215 'lowpaymentfee' 'lowpaymentfee.com':32 'max':121 'must':104 'network':85 'no-api-key' 'offer':53 'page':167 'part':47 'pay':9,23,58 'pay-per-call API' 'pay-per-request':57 'payload':199 'payment':96,109,114,143 'paywal':44 'per':13,27,59,77 'platform':51,155 'post':91 'price':74 'proof':115 'protocol':102 'provid':33 'rate':161 'receipt':5,19,36,207 'request':14,28,60,92 'request/response':198 'requir':175 'resourc':37 'result':189 'return':94,210 'schema':194 'second':152 'sent':145 'settl':79 'span':63 'specif':87 'substant':182 'timeout':153 'transact':4,18,35,38 'transaction receipt API' 'transaction-receipt' 'unit':127 'usdc':12,26,81,129,138 'usdc-settlement' 'util':72 'valid':113 'varieti':55 'via':99 'wallet':177 'x':108 'x-payment':107 'x402':2,16,43,101,117 'x402 payment endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"dc50e558-cdb0-49e5-a19e-27e88887083a","listingId":"9a80492c-fd3b-4e2d-956e-5548d87160ab","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/transactions/349/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:26:25.855Z"}],"sources":[{"listingId":"9a80492c-fd3b-4e2d-956e-5548d87160ab","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/349/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:26:25.855Z","lastSeenAt":"2026-04-24T06:32:42.814Z"}],"details":{"listingId":"9a80492c-fd3b-4e2d-956e-5548d87160ab","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/349/receipt \\\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 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/349/receipt"},{"claim":"Platform advertises $0.02 per request, no API keys, no rate limits, instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/transactions/349/receipt"}],"useCases":["Retrieving a transaction receipt for transaction 349 via programmatic payment","Demonstrating x402 protocol integration for agent-to-agent micropayments","Accessing pay-per-request infrastructure without API key management"],"bestFor":["Agents or developers experimenting with x402 payment flows","Use cases requiring keyless, per-call API access on Base","Micropayment-gated data retrieval"],"notFor":["Users needing detailed API documentation or schemas before integrating","Bulk or high-volume receipt retrieval (no batch endpoint documented)","Users without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:37.966Z"},"updatedAt":"2026-04-24T06:32:42.814Z"}}