{"id":"f2aa6a30-3861-40fe-a2fc-9d402aefe6f7","shortId":"6VdyQt","kind":"x402","title":"Pay-per-call transaction receipt endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call transaction receipt endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This x402-enabled endpoint at lowpaymentfee.com provides a transaction receipt retrieval API. When called via POST, it returns a JSON receipt for transaction ID 7. Payment is settled on the Base network using USDC (contract 0x8335…2913) through the x402 exact-payment scheme.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that advertises multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request. The platform emphasizes simplicity: no API keys, no rate limits, and no minimum commitments. Payment is handled entirely through the x402 protocol's X-PAYMENT header.\n\nThe specific endpoint probed (/api/v1/transactions/7/receipt) charges a maximum of 20,000 base units of USDC (6 decimals), which equals $0.02 per call. The x402 challenge is live and returns a well-formed v1 challenge with a 300-second payment timeout. Documentation on the site is extremely thin — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled pages.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","transaction-receipt","pay-per-call","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 API","USDC micropayment API","Base network API","pay-per-request API","lowpaymentfee","crypto payment endpoint"],"warnings":["Documentation pages (docs, pricing, API, README) contain no substantive content — only a 'Connect wallet' prompt","No OpenAPI or schema documentation available for request or response formats","The endpoint path includes a hardcoded transaction ID (/transactions/7/receipt); it is unclear whether other transaction IDs are supported or what the broader API surface looks like","The platform advertises many API categories (AI, analytics, finance, utilities) but no details on actual functionality are documented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/7/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/7/receipt","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 well-formed, confirming the endpoint works. However, documentation is essentially nonexistent — docs, pricing, API, and README pages all show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and no examples. The endpoint path suggests a hardcoded transaction ID (7), making the general utility unclear.","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":"2026-04-19T13:37:57.309Z","embedding":[-0.027328491,-0.047973633,0.034240723,0.0070114136,-0.013885498,-0.01525116,-0.0077552795,0.017623901,0.056854248,-0.07366943,0.02583313,-0.03591919,-0.028045654,-0.03152466,-0.016326904,0.0078125,0.016571045,0.033599854,-0.035064697,0.022323608,0.009490967,-0.032165527,-0.027740479,0.026641846,-0.003698349,-0.022323608,-0.016845703,-0.0051956177,-0.034088135,-0.03756714,0.03942871,-0.019760132,-0.025024414,0.002779007,-0.018722534,0.0060272217,-0.0041503906,0.008132935,0.026290894,-0.013580322,-0.012023926,-0.043823242,0.008972168,-0.022583008,-0.048095703,0.0013570786,0.0039596558,-0.010650635,0.021606445,-0.010719299,-0.049316406,-0.0131073,0.013511658,0.018676758,-0.0035381317,0.004627228,0.011474609,0.012718201,0.021453857,0.020584106,0.0003414154,-0.07098389,-0.013259888,-0.021026611,0.010314941,0.05947876,-0.013885498,0.055908203,0.024276733,0.0680542,0.022842407,0.046142578,0.021774292,0.004837036,0.012496948,-0.0010128021,0.002325058,0.039733887,-0.022964478,-0.038513184,-0.0065841675,-0.027404785,-0.068725586,0.011871338,-0.015930176,-0.046722412,-0.021591187,0.009902954,-0.012634277,0.032958984,-0.0690918,-0.00497818,0.018005371,0.0178833,0.003742218,-0.028869629,-0.035980225,-0.00070619583,-0.0023956299,0.005554199,-0.0031089783,-0.035949707,0.043914795,-0.00027108192,0.029067993,0.0463562,0.000626564,0.021850586,0.011795044,0.01184082,-0.012107849,0.036895752,0.013450623,-0.024551392,0.022399902,-0.01373291,-0.020065308,0.009361267,-0.038085938,0.033691406,-0.03213501,0.061798096,-0.0096588135,-0.0074157715,0.0055160522,-0.046722412,-0.032440186,0.010864258,-0.009490967,0.009361267,0.02784729,0.02319336,0.018844604,-0.014060974,-0.025100708,0.013084412,-0.018127441,-0.030792236,-0.037322998,-0.048919678,0.030639648,-0.029205322,-0.00034451485,0.045562744,-0.075927734,0.013938904,-0.04699707,-0.0010633469,-0.011505127,-0.021697998,-0.004211426,0.0057029724,-0.018066406,-0.0042419434,-0.016342163,-0.023544312,0.005542755,0.05404663,-0.011161804,0.033081055,-0.023422241,0.020507812,0.04144287,0.016540527,0.019943237,0.012496948,-0.00630188,-0.05783081,-0.07775879,0.0041007996,0.007987976,-0.020019531,-0.03665161,0.008911133,-0.02168274,-0.08270264,-0.0138168335,0.011383057,-0.005508423,-0.03466797,-0.004611969,-0.045410156,0.009498596,-0.020019531,-0.035247803,-0.024780273,-0.029846191,0.059173584,0.027175903,0.040222168,0.0206604,-0.020050049,0.031951904,0.021530151,-0.00041222572,0.00074481964,0.012771606,-0.031021118,0.0054626465,-0.010864258,0.0073127747,-0.022964478,0.019210815,0.08886719,-0.003194809,-0.051330566,-0.0096206665,-0.053375244,-0.020126343,-0.0060577393,0.023422241,0.005844116,-0.012008667,0.035064697,-0.047790527,-0.007835388,0.026901245,0.026367188,-0.0008845329,0.05895996,0.02557373,-0.019699097,0.0385437,0.022491455,-0.046173096,0.050811768,0.020812988,0.013504028,-0.020202637,-0.058776855,0.019348145,0.034057617,-0.022094727,0.0033340454,-0.017486572,0.051971436,-0.011367798,-0.0046806335,0.017166138,-0.005039215,-0.036956787,-0.016235352,-0.014373779,0.03149414,0.0055503845,-0.020767212,-0.04623413,-0.06915283,0.074157715,0.032287598,0.014076233,-0.0070762634,0.012634277,-0.024490356,-0.0135269165,-0.08203125,0.055267334,0.05810547,-0.0035514832,-0.033172607,0.05114746,-0.018676758,-0.039886475,0.014732361,-0.018112183,-0.030654907,-0.01751709,-0.00041985512,-0.0368042,0.0131073,-0.0029029846,-0.0015192032,0.057891846,0.011627197,-0.0491333,-0.013145447,-0.02645874,0.0046310425,-0.023284912,-0.008117676,-0.0028572083,0.029785156,0.011177063,0.00059080124,0.0015029907,0.013755798,-0.017425537,-0.010261536,0.021652222,0.0035057068,-0.034179688,0.01576233,-0.0017433167,-0.05923462,-0.005821228,-0.013397217,0.06530762,-0.06726074,0.0345459,-0.015266418,0.006969452,0.07763672,-0.014205933,-0.04864502,0.0077667236,0.022827148,0.013511658,0.017791748,0.024475098,-0.015640259,-0.018356323,0.059265137,-0.01687622,-0.011444092,0.019882202,0.013397217,0.035858154,-0.013031006,-0.06365967,-0.040039062,0.02859497,-0.020248413,0.022399902,-0.010887146,0.04043579,-0.017318726,-0.0096206665,-0.0345459,0.006336212,0.0005364418,0.010406494,-0.012191772,0.0022182465,-0.018569946,-0.011421204,0.040039062,0.002254486,-0.024230957,0.006839752,0.05682373,0.016174316,-0.017211914,-0.022491455,-0.042907715,-0.02192688,-0.022521973,0.022964478,0.017120361,0.02029419,0.03540039,-0.037902832,0.010009766,0.022628784,-0.008544922,0.03262329,0.0041923523,-0.008415222,-0.08276367,-0.03286743,-0.017333984,-0.047027588,0.04336548,0.036010742,0.0020771027,0.06549072,0.018920898,-0.049865723,-0.029937744,0.030227661,-0.038635254,0.003458023,0.054626465,-0.03253174,0.000685215,-0.003791809,-0.014923096,0.011444092,0.038604736,0.02835083,0.019927979,0.066467285,0.033996582,0.0010576248,0.015838623,0.018356323,0.026763916,0.0026607513,-0.016616821,-0.025360107,-0.026763916,0.028900146,-0.03857422,-0.019744873,-0.05166626,0.056854248,0.05303955,0.07714844,0.02645874,0.014656067,0.03314209,0.01991272,0.017044067,-0.0056533813,-0.030456543,-0.049194336,-0.034362793,0.03164673,-0.026855469,0.0028514862,-0.012542725,0.02368164,0.006061554,0.019561768,-0.02520752,0.03137207,-0.019088745,-0.0006494522,0.03845215,0.027954102,0.048095703,0.051757812,-0.029769897,0.0158844,0.017913818,-0.047912598,0.020721436,0.017807007,-0.014945984,0.00541687,-0.05203247,-0.029968262,0.0033569336,-0.008087158,-0.0435791,0.0060653687,0.0013122559,0.019515991,0.027359009,-0.024307251,-0.02532959,0.0013589859,-0.01890564,-0.0335083,-0.0065841675,-0.044433594,0.01411438,0.026260376,-0.033691406,0.03692627,0.0016717911,0.00299263,-0.027435303,0.0028457642,0.02027893,-0.0057678223,-0.031951904,0.028671265,0.003868103,-0.0038776398,0.003080368,0.030456543,0.01424408,0.050323486,0.03744507,0.009773254,-0.006713867,-0.07470703,0.037963867,-0.05227661,0.0022602081,0.041778564,-0.036132812,0.013626099,-0.017471313,-0.03729248,-0.022583008,0.005176544,-0.01965332,-0.004878998,0.016708374,-0.028533936,-0.024032593,-0.054718018,-0.0181427,-0.011352539,0.043395996,0.004749298,0.022888184,-0.07977295,0.009628296,0.01939392,0.008346558,0.01360321,-0.013900757,-0.012649536,-0.012130737,-0.019073486,-0.006298065,-0.007827759,0.020446777,-0.0104904175,0.003250122,0.019546509,0.0152282715,0.024032593,0.031799316,0.008110046,0.033691406,0.00020551682,-0.0110321045,0.015052795,0.05239868,0.018737793,-0.036590576,-0.0440979,0.038970947,-0.011947632,0.037841797,-0.04623413,-0.013641357,-0.008117676,0.0109939575,0.0055236816,-0.0050582886,0.005126953,-0.004058838,-0.044921875,-0.06329346,0.030807495,-0.01939392,0.041656494,0.040649414,-0.001162529,0.021530151,-0.0088272095,0.019058228,0.0059318542,-0.025100708,-0.030349731,-0.032348633,-0.041107178,-0.037200928,-0.009300232,-0.02859497,0.0256958,-0.01473999,0.013381958,-0.0011129379,-0.021636963,0.03112793,-0.011779785,0.0048713684,0.0010433197,-0.0060577393,0.014434814,0.023635864,0.021255493,-0.050689697,0.027542114,-0.0030097961,0.0013141632,-0.0064315796,0.020767212,0.023254395,-0.024536133,0.0038490295,-0.013374329,0.00061416626,-0.02041626,0.011184692,-0.014297485,-0.0011196136,-0.007801056,-0.050109863,0.012771606,0.005908966,-0.04321289,-0.036315918,0.021606445,0.016616821,-0.03012085,0.016143799,0.03387451,0.042297363,-0.012908936,-0.0040626526,-0.0021419525,0.036712646,0.051940918,0.015731812,-0.0026111603,0.03363037,-0.0037117004,0.03152466,-0.000046014786,-0.009941101,0.004924774,0.013298035,0.028335571,0.015533447,-0.0043296814,0.007663727,-0.044311523,-0.010040283,0.00705719,-0.03262329,0.03857422,0.011787415,0.027282715,-0.01574707,0.01966858,0.0049819946,-0.015396118,-0.009536743,0.014755249,0.039031982,-0.0062561035,-0.023971558,0.008132935,0.026977539,0.03527832,-0.06341553,-0.005622864,-0.0047416687,0.0103302,-0.012107849,-0.036895752,-0.020980835,-0.013046265,0.04296875,0.01083374,0.013381958,0.037200928,0.0032138824,0.0011768341,0.023010254,0.010848999,-0.0070495605,-0.0026474,-0.043518066,-0.0017499924,-0.012939453,0.004928589,-0.037902832,0.019515991,0.0037460327,-0.0069732666,0.0030956268,-0.033294678,0.0021514893,-0.02229309,0.0037975311,0.034423828,-0.016738892,0.0044136047,-0.010147095,-0.044403076,0.00598526,0.011947632,0.0061531067,-0.031677246,0.010848999,-0.012123108,-0.0040359497,0.0035800934,0.007095337,0.024002075,0.011993408,0.010002136,0.030761719,-0.05319214,0.05050659,-0.024139404,0.026046753,0.009025574,-0.027511597,-0.017181396,-0.02607727,-0.0061569214,0.029663086,-0.011688232,-0.0112838745,-0.028839111,-0.05895996,-0.012191772,-0.057373047,0.013870239,0.02418518,0.041412354,-0.022384644,0.001159668,-0.025009155,0.016052246,-0.0032615662,0.013450623,-0.018569946,0.032043457,0.02027893,0.020736694,-0.015640259,-0.028030396,-0.030426025,0.002784729,-0.054260254,-0.050628662,-0.007724762,0.015098572,0.0017290115,-0.009063721,-0.028305054,-0.016311646,-0.0077934265,-0.029541016,0.013847351,-0.010650635,0.02230835,0.005428314,-0.007286072,0.000017642975,0.009681702,-0.010650635,0.04727173,0.028762817,0.0010919571,-0.03805542,0.019714355,0.0059051514,0.00491333,-0.022323608,-0.00869751,0.0016622543,-0.02645874,-0.050201416,0.017089844,0.008224487,-0.011756897,-0.025787354,0.013664246,-0.045959473,0.0069351196,-0.046905518,-0.0058174133,0.013038635,0.0039138794,0.009277344,0.010505676,0.014129639,-0.0019016266,-0.0052108765,-0.04284668,0.024795532,0.009895325,0.004989624,0.01864624,0.05923462,0.004776001,-0.026824951,0.00038552284,-0.015960693,0.010009766,-0.022720337,0.021774292,-0.006416321,0.009849548,-0.0032482147,-0.012886047,-0.038085938,0.0128479,0.06323242,-0.0064888,-0.01902771,-0.017410278,-0.009628296,0.026977539,0.03225708,-0.0289917,0.00095796585,-0.015686035,0.01864624,-0.026168823,-0.000044822693,-0.010528564,0.03253174,-0.01184082,-0.04638672,-0.014343262,-0.02420044,-0.005455017,-0.058044434,-0.02204895,-0.054107666,0.019134521,0.0019741058,-0.024520874,0.011146545,0.021575928,-0.024719238,-0.081848145,0.017837524,0.031204224,-0.00003695488,0.02986145,0.004272461,0.019104004,0.024307251,-0.028671265,-0.01979065,0.008163452,-0.022872925,0.0009508133,-0.030334473,0.019592285,-0.008293152,-0.00818634,0.011001587,0.0013990402,0.008003235,-0.007511139,-0.0121154785,-0.01928711,0.002445221,-0.013977051,0.025817871,-0.018127441,-0.011245728,0.038726807,-0.05508423,0.041778564,0.020462036,0.0037651062,0.004940033,0.03225708,0.050354004,-0.036010742,0.0053253174,0.011802673,0.025115967,0.061431885,-0.027801514,0.017044067,0.018600464,0.00018000603,-0.00017428398,-0.002527237,-0.008773804,-0.030563354,-0.0104904175,0.03149414,-0.0028038025,0.00059843063,-0.029129028,0.014015198,0.013717651,0.030426025,0.004589081,-0.006668091,-0.030273438,-0.03729248,0.00223732,0.00724411,-0.009277344,-0.007537842,0.020111084,0.04144287,0.03225708,0.025817871,-0.025741577,0.006088257,0.034423828,-0.008621216,-0.015930176,0.031585693,0.002046585,0.021316528,0.024337769,0.009010315,-0.029312134,-0.023101807,-0.020370483,-0.019805908,0.0062408447,-0.014320374,-0.0018167496,0.0017356873,0.009994507,-0.0063056946,-0.019729614,0.006679535,-0.032592773,-0.036254883,-0.006225586,-0.014602661,0.04321289,0.0020923615,-0.0032577515,0.017944336,0.0021362305,0.041503906,0.009124756,-0.022964478,0.030532837,0.03793335,0.01687622,-0.012481689,0.0016241074,-0.015113831,-0.01285553,-0.013435364,-0.042266846,0.024810791,0.018127441,-0.008666992,0.0055618286,-0.0024204254,0.022354126,-0.010803223,0.0037841797,-0.011268616,0.013206482,0.0014400482,0.05923462,-0.043182373,0.03137207,0.009307861,-0.0063705444,-0.015167236,-0.0036468506,-0.0289917,0.024856567,0.01272583,0.001291275,0.031051636,0.0022888184,0.032806396,-0.023910522,-0.024215698,-0.0014038086,-0.019729614,-0.032226562,0.010818481,-0.016540527,-0.01864624,0.013977051,-0.01574707,0.03274536,-0.024612427,0.016845703,-0.018722534,-0.005493164,-0.013717651,-0.013473511,-0.013343811,-0.009338379,-0.00970459,0.018173218,-0.0028514862,0.05682373,0.009506226,0.03466797,0.04611206,0.026977539,0.0017881393,-0.03677368,-0.028198242,0.0038642883,0.0014314651,0.0048980713,-0.0135269165,0.051361084,0.044189453,0.002658844,0.037963867,0.008934021,0.028335571,0.012870789,0.008270264,-0.012710571,0.006790161,-0.0048217773,0.027664185,-0.02418518,0.039764404,-0.03173828,0.034606934,0.020736694,0.03277588,-0.022003174,0.02633667,0.079711914,-0.0023231506,-0.017440796,0.030654907,-0.0018758774,-0.028427124,-0.0112838745,-0.025802612,0.042633057,0.024353027,0.022735596,0.062683105,0.022720337,0.016311646,0.012908936,-0.012863159,-0.018417358,0.060394287,0.025985718,-0.0064353943,-0.024032593,-0.0015439987,0.013053894,-0.03768921,-0.016418457,0.00894165,-0.040283203,0.0062561035,0.00082206726,-0.0022563934,-0.0057907104,0.014587402,0.018997192,0.028793335,-0.018630981,0.03805542,0.02406311,-0.008857727,0.02557373,-0.003862381,0.014450073,-0.025512695,-0.024795532,0.017410278,0.032165527,-0.01802063,-0.030426025,0.031951904,0.0069618225,0.04751587,0.04559326,-0.029312134,0.009307861,0.030944824,-0.0014896393,-0.009811401,0.05480957,0.027816772,0.009521484,0.047821045,0.022903442,0.0385437,-0.03010559,0.019332886,-0.004623413,-0.00008845329,-0.01309967,0.006164551,0.01676941,-0.018203735,0.042022705,-0.008033752,-0.011756897,0.012550354,0.029815674,-0.009300232,-0.007369995,-0.011520386,0.0019226074,-0.015525818,-0.005973816,0.030181885,-0.015213013,0.028411865,0.003791809,0.035369873,-0.04071045,0.022262573,-0.0062828064,-0.025360107,-0.016555786,0.01524353,-0.034851074,0.009025574,-0.011413574,-0.01146698,-0.047027588,0.016815186,0.028030396,-0.023345947,0.025390625,0.004272461,0.0023097992,-0.002532959,0.030197144,0.008110046,0.0027446747,-0.011993408,-0.016448975,0.021255493,0.04586792,0.009902954,-0.007785797,-0.01902771,0.00063467026,-0.0068092346,-0.006793976,-0.011917114,-0.0005598068,-0.017425537,-0.01902771,0.015899658,0.030563354,0.0038967133,0.05517578,-0.026687622,-0.006790161,0.013587952,0.04360962,-0.0013551712,-0.029144287,-0.011398315,0.017166138,-0.026412964,0.038024902,0.041809082,0.0046310425,0.036315918,0.007545471,-0.01701355,0.00044679642,-0.0017900467,0.027435303,-0.014656067,-0.0007095337,-0.001958847,0.029434204,-0.014678955,-0.020248413,0.00015330315,-0.022018433,-0.012634277,-0.006916046,0.013031006,0.0013771057,0.029708862,0.04034424,0.008026123,-0.02293396,0.056365967,-0.016494751,0.044830322,0.015548706,-0.01448822,0.047302246,0.021728516,0.045532227,0.016464233,0.025466919,-0.027160645,0.036743164,0.03086853,0.021896362,0.011192322,0.010803223,-0.013000488,0.034057617,-0.006511688,0.033111572,-0.0063705444,-0.012489319,0.02243042,-0.0034656525,-0.008613586,-0.00033807755,-0.010574341,-0.00013232231,0.041778564,-0.030761719,-0.0007753372,-0.023040771,-0.0024604797,0.019104004,-0.009460449,-0.00818634,0.00046038628,-0.009101868,0.00806427,-0.013282776,-0.015075684,0.015991211,0.03753662,-0.041809082,0.003993988,0.016723633,0.004470825,-0.0062446594,0.027542114,0.036895752,0.009651184,-0.0015878677,0.04309082,-0.023223877,0.039520264,-0.006084442,0.01852417,0.018203735,0.009735107,-0.018173218,0.005844116,0.0064430237,-0.01473999,0.01576233,0.035339355,-0.029556274,-0.0031375885,-0.0015964508,-0.004711151,-0.0075645447,-0.011520386,-0.016601562,0.009185791,-0.017562866,-0.0211792,0.008010864,0.0063591003,-0.00083971024,0.004135132,0.01398468,0.009712219,0.022399902,0.0178833,0.033294678,-0.039398193,-0.0014390945,0.004322052,0.010795593,-0.015533447,-0.016937256,-0.0014295578,-0.040863037,0.008560181,-0.00042557716,0.014778137,0.016052246,-0.010940552,-0.006084442,0.020904541,0.01259613,0.014076233,-0.012878418,0.0077934265,0.011520386,-0.020202637,0.00028920174,-0.007888794,-0.001865387,0.018295288,0.02609253,-0.019042969,-0.028121948,0.02029419,-0.013885498,0.017990112,-0.00793457,0.002166748,0.02986145,-0.0053138733,0.0036506653,-0.0062065125,0.014602661,-0.020736694,-0.013702393,0.00014138222,0.017410278,0.053863525,-0.007129669,0.004589081,0.021606445,0.02192688,0.020111084,0.0357666,0.020141602,0.047851562,0.024124146,-0.03189087,-0.006416321,0.018722534,-0.009216309,-0.021087646,0.012313843,-0.037750244,-0.015396118,-0.00548172,0.01802063,-0.0027694702,-0.031463623,-0.00069379807,-0.01651001,-0.004299164,0.017333984,-0.010612488,0.01902771,-0.018920898,-0.002691269,0.017807007,-0.031097412,-0.03540039,-0.034820557,-0.013549805,-0.007423401,-0.052612305,0.0121536255,-0.03503418,0.013031006,-0.024154663,-0.004787445,-0.004585266,0.009719849,0.00592041,-0.022064209,0.006679535,0.024154663,0.018203735,0.01725769,0.022323608,-0.02571106,-0.023590088,-0.024169922,0.0014228821,-0.01373291,0.037506104,0.0048294067,0.022918701,0.025100708,-0.03173828,-0.007663727,-0.01525116,-0.018539429,-0.0017433167,-0.008262634,-0.013977051,0.013771057,0.0046958923,0.014305115,-0.010498047,0.045288086,-0.025405884,-0.009803772,0.024780273,0.040222168,-0.0039367676,0.03326416,-0.011253357,-0.00024843216,-0.0184021,0.005680084,-0.013053894,0.0062408447,0.0031223297,0.015472412,0.001707077,0.031051636,0.015075684,-0.014129639,0.001499176,0.02748108,0.01247406,0.013885498,0.022018433,0.016815186,0.008979797,-0.00705719,-0.0070648193,-0.0030956268,0.048431396,0.034454346,0.0012521744,-0.015975952,0.0029010773,-0.018508911,0.014930725,0.030426025,-0.022888184,-0.044647217,-0.013397217,-0.041412354,-0.0003733635,0.0018205643,0.014419556,-0.0107803345,0.019821167,-0.015037537,-0.02810669,-0.017532349,0.030258179,0.02947998,-0.011444092,-0.014266968,0.001709938,0.012710571,-0.030258179,-0.0049552917,-0.040222168,-0.043792725,0.015113831,-0.014755249,0.022094727,0.0048599243,-0.00932312,-0.013183594,-0.016342163,-0.01424408,0.018966675,0.00894165,-0.0063552856,0.0027770996,0.026168823,0.026672363,-0.010040283,0.0317688,-0.009681702,0.020401001,0.012306213,-0.0029792786,0.020721436,-0.009986877,0.025482178,-0.008850098,0.010734558,0.018615723,-0.012939453,0.006038666,-0.04940796,0.0014133453,0.007820129,-0.0029296875,0.031555176,-0.012664795,-0.03173828,-0.0046157837,-0.023376465,-0.025634766,-0.004219055,0.0059547424,0.031585693,-0.0038814545,0.046661377,-0.013465881,-0.0090408325,0.011947632,0.009773254,-0.012512207,0.012825012,0.020339966,-0.012069702,-0.0006341934,-0.006412506,-0.009811401,-0.013427734,-0.021209717,0.007621765,-0.008522034,0.00046277046,0.02192688,0.012611389,0.036590576,0.0037021637,0.03048706,0.0018281937,0.008300781,0.02357483,0.00095176697,0.036834717,-0.007698059,-0.018356323,0.00077438354,-0.005619049,-0.03564453,0.014099121,-0.0041160583,-0.0039787292,-0.03656006,0.00242424,-0.0027046204,0.023712158,-0.014778137,0.011795044,-0.0115737915,-0.003704071,-0.019744873,-0.010604858,-0.02230835,0.013580322,0.02067566,-0.005115509,0.04067993,0.0017471313,-0.0135650635,0.0063095093,0.03491211,-0.008453369,-0.023483276,-0.02470398,0.016418457,0.0034046173,0.00907135,0.0124435425,-0.031021118,-0.017044067,0.0008020401,-0.00067043304,-0.005340576,-0.0037784576,0.016586304,-0.005519867,0.00003695488,-0.013900757,0.02810669,-0.008224487,-0.016967773,-0.0004887581,0.011100769,0.030715942,0.02909851,-0.0085372925,-0.0061454773,0.023742676,-0.03466797,0.06298828,-0.001991272,0.023345947,-0.014129639,0.0036315918,-0.059020996,-0.019927979,-0.0043144226,-0.009529114],"createdAt":"2026-04-18T19:26:53.842Z","updatedAt":"2026-04-24T04:04:20.498Z","lastSeenAt":"2026-04-24T04:04:20.498Z","tsv":"'/api/v1/transactions/7/receipt':142 '/request':17,34 '0.02':16,33,108,157 '000':148 '0x8335':71 '20':147 '2913':72 '300':175 '6':153 '7':60 'Base network API' 'USDC micropayment API' 'advertis':90 'ai':97 'analyt':96 'api':47,92,116,189 'avail':217 'base':9,26,66,149 'base-network' 'broader':86 'call':4,21,49,159 'categori':93 'challeng':162,172 'charg':143 'commit':124 'connect':197 'content':203 'contract':70 'crawl':220 'crypto payment endpoint' 'data':95 'decim':154 'doc':187 'document':179,212 'emphas':113 'enabl':38 'endpoint':7,24,39,81,140 'entir':128 'equal':156 'exact':77 'exact-pay':76 'exampl':216 'extrem':184 'financ':100 'form':170 'handl':127 'header':137 'id':59 'includ':94 'infrastructur':103 'json':55 'json-response' 'key':117 'learn':99 'limit':120 'live':164 'lowpaymentfee' 'lowpaymentfee.com':41,88 'machin':98 'maximum':145 'minimum':123 'multipl':91 'network':67 'no-api-key' 'openapi':207 'page':192,221 'part':83 'pay':2,19 'pay-per-cal':1,18 'pay-per-call' 'pay-per-request API' 'payment':61,78,125,136,177 'per':3,20,109,158 'platform':87,112 'post':51 'price':106,188 'probe':141 'prompt':199 'protocol':132 'provid':42 'rate':119 'readm':191 'receipt':6,23,45,56 'render':194 'request':110 'request/response':210 'retriev':46 'return':53,166 'schema':211 'scheme':79 'second':176 'settl':12,29,63 'simplic':114 'site':182 'spec':208 'specif':139 'substant':202 'thin':185 'timeout':178 'transact':5,22,44,58 'transaction receipt API' 'transaction-receipt' 'unit':150 'usag':215 'usdc':14,31,69,152 'usdc-settlement' 'use':68 'util':104 'v1':171 'via':10,27,50 'wallet':198 'web3':101 'well':169 'well-form':168 'x':135 'x-payment':134 'x402':11,28,37,75,131,161 'x402 API' 'x402-enabled':36 'x402-payment'","prices":[{"id":"a1f39ffe-070d-492a-886e-b7bc95427aab","listingId":"f2aa6a30-3861-40fe-a2fc-9d402aefe6f7","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/7/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":"2026-04-18T19:26:53.842Z"}],"sources":[{"listingId":"f2aa6a30-3861-40fe-a2fc-9d402aefe6f7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/7/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:26:53.842Z","lastSeenAt":"2026-04-24T04:04:20.498Z"}],"details":{"listingId":"f2aa6a30-3861-40fe-a2fc-9d402aefe6f7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/7/receipt \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/7/receipt"},{"claim":"The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/7/receipt"},{"claim":"Multiple API categories are listed including Data & Analytics, AI & ML, Finance & Web3, and Infrastructure","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving transaction receipts programmatically with per-call USDC payment","Integrating pay-per-use APIs into agent workflows without API key management","Demonstrating x402 protocol payment flows on Base network"],"bestFor":["Agents or services that need on-demand transaction receipt data with no subscription","Developers experimenting with x402 protocol integrations on Base","Workflows requiring keyless, pay-as-you-go API access"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integration","High-volume batch processing where per-call pricing may add up","Users without access to USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:36.614Z"},"updatedAt":"2026-04-24T04:04:20.498Z"}}