{"id":"c541658d-7fa7-49a2-aa2a-261410da29e0","shortId":"cwx8Vq","kind":"x402","title":"Transaction receipt endpoint on Base, paid per-call via x402 with USDC.","tagline":"Transaction receipt endpoint on Base, paid per-call via x402 with USDC.","description":"This endpoint at lowpaymentfee.com provides access to a transaction receipt (resource ID 348) behind an x402 paywall. The broader lowpaymentfee.com platform advertises a suite of API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network with no API keys or rate limits required.\n\nThe specific endpoint `/api/v1/transactions/348/receipt` returns a 402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme by including an X-PAYMENT header. The response MIME type is application/json. The endpoint accepts POST requests and is marked as discoverable.\n\nDocumentation on the site is extremely thin — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples. The platform appears to be a demonstration or early-stage x402 API marketplace, but the actual data returned by this receipt endpoint is unspecified.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","transaction-receipt","per-call-pricing","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 paid endpoint","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee"],"warnings":["No OpenAPI spec or schema documentation available","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content","The specific data returned by this receipt endpoint is completely undocumented","Purpose of resource ID 348 is unclear — may be a demo or placeholder","Platform appears to be early-stage or a proof-of-concept"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/348/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/348/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The /docs and other pages render only a wallet-connect prompt. The specific purpose of the 'transactions/348/receipt' resource is unexplained.","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":"2026-04-19T13:21:28.719Z","embedding":[-0.03338623,-0.031021118,0.03894043,0.0107040405,-0.009185791,-0.009384155,-0.017959595,0.04019165,0.048828125,-0.06896973,0.023742676,-0.026107788,-0.023101807,-0.042510986,-0.012268066,0.019973755,0.007194519,0.03137207,-0.050689697,0.04623413,0.025756836,-0.039764404,-0.026138306,0.010406494,-0.011741638,-0.01966858,-0.031555176,-0.015007019,-0.050445557,-0.032318115,0.045074463,-0.018692017,-0.015655518,0.0076446533,-0.009544373,0.020645142,-0.006084442,0.014251709,0.0340271,-0.016403198,-0.007926941,-0.041931152,0.0014839172,-0.0007133484,-0.047668457,0.019424438,-0.0005931854,-0.012237549,0.018127441,-0.007736206,-0.062438965,-0.009895325,-0.004814148,0.015136719,-0.0084991455,0.0003466606,0.00091791153,0.01007843,0.02368164,-0.004676819,-0.0040740967,-0.057159424,-0.011756897,-0.028167725,-0.00049591064,0.050323486,-0.017242432,0.06713867,0.020614624,0.05895996,0.03692627,0.03845215,0.043914795,0.02204895,0.02432251,-0.0068740845,0.0038642883,0.04031372,-0.040985107,-0.02607727,0.008911133,-0.03378296,-0.06933594,0.0013933182,-0.0154953,-0.051940918,-0.028747559,0.00010496378,-0.014251709,0.022033691,-0.06756592,0.006465912,0.014579773,0.030456543,-0.0013933182,-0.04019165,-0.044433594,-0.00074005127,-0.01586914,0.0025634766,-0.023330688,-0.030380249,0.039733887,-0.0054626465,0.030792236,0.030792236,-0.008010864,0.022506714,0.000014901161,0.007167816,-0.010192871,0.027526855,0.02583313,-0.036895752,0.018600464,-0.007972717,-0.020690918,0.014335632,-0.019485474,0.033966064,-0.043670654,0.060638428,0.005142212,-0.011680603,0.003320694,-0.043914795,-0.036071777,0.023117065,-0.020751953,0.0039978027,0.059265137,0.033935547,0.0006079674,-0.024017334,-0.016159058,0.009674072,-0.007472992,-0.01600647,-0.029037476,-0.045166016,0.024841309,-0.03137207,0.0014371872,0.04345703,-0.07745361,0.0013837814,-0.043670654,-0.005443573,-0.011024475,-0.00894928,-0.000344038,-0.007865906,-0.020889282,-0.0158844,-0.012580872,-0.02998352,0.00043034554,0.047210693,-0.008911133,0.020431519,-0.020980835,0.033416748,0.028503418,0.019363403,0.02027893,0.01914978,-0.0070610046,-0.07244873,-0.08294678,0.009674072,0.018981934,-0.029006958,-0.05291748,-0.0013341904,-0.03656006,-0.08270264,-0.019073486,0.010467529,0.01007843,-0.04550171,-0.0002977848,-0.041381836,0.0033664703,-0.031341553,-0.031829834,-0.026824951,-0.03930664,0.06286621,0.031951904,0.025665283,0.0012140274,-0.0071258545,0.027114868,0.026229858,-0.0025615692,-0.014968872,-0.010154724,-0.007080078,0.033325195,-0.017120361,0.012008667,-0.031173706,0.025268555,0.08538818,-0.011047363,-0.045166016,-0.0059509277,-0.042175293,-0.027313232,-0.017623901,0.021957397,0.019088745,-0.014030457,0.029342651,-0.047668457,-0.0043296814,0.033294678,0.03829956,0.006526947,0.055725098,0.015510559,-0.015602112,0.015991211,0.02166748,-0.022781372,0.048675537,0.024673462,0.019363403,-0.022857666,-0.055908203,0.006362915,0.021636963,-0.027572632,-0.0035877228,-0.014785767,0.05078125,0.0041503906,-0.012046814,0.025970459,-0.00031805038,-0.019851685,-0.018127441,0.010055542,0.029037476,0.018676758,-0.019317627,-0.053497314,-0.07897949,0.07904053,0.04244995,0.021087646,0.0045547485,-0.014144897,-0.021911621,-0.015022278,-0.068359375,0.04147339,0.06768799,-0.0030517578,-0.027282715,0.048828125,-0.0115737915,-0.04550171,0.00011301041,-0.031402588,-0.029327393,0.0041122437,-0.0031433105,-0.03479004,0.02178955,-0.01235199,0.0023860931,0.061523438,0.010604858,-0.04525757,-0.007335663,-0.016204834,0.004966736,-0.02482605,-0.012786865,0.005680084,0.024597168,0.0059547424,0.01322937,-0.00083112717,0.032958984,0.0042037964,-0.016708374,0.015914917,-0.0037269592,-0.030731201,0.011955261,0.003818512,-0.053649902,0.0079574585,-0.0019083023,0.06060791,-0.06506348,0.054534912,-0.028839111,0.0030136108,0.055725098,-0.0042037964,-0.042633057,0.01789856,0.026977539,0.014503479,0.013618469,0.02468872,-0.0007004738,-0.018981934,0.06695557,-0.018844604,-0.006225586,0.014389038,0.01449585,0.03543091,-0.022735596,-0.05456543,-0.048950195,0.031402588,-0.034942627,0.024383545,-0.0035114288,0.047027588,-0.011474609,-0.015007019,-0.04421997,-0.0046539307,0.00031852722,0.013519287,-0.021453857,-0.00522995,-0.036712646,-0.023025513,0.038146973,0.0077667236,-0.019424438,0.008407593,0.07208252,0.030807495,-0.01473999,-0.030426025,-0.039245605,-0.01991272,-0.0131073,0.02154541,0.0115737915,0.016540527,0.038635254,-0.0206604,0.013847351,0.02809143,-0.014823914,0.028244019,0.007835388,0.0055885315,-0.061920166,-0.022460938,-0.024261475,-0.06542969,0.032104492,0.023544312,0.004798889,0.06048584,0.0062713623,-0.039031982,-0.018615723,0.029571533,-0.047912598,0.013748169,0.04058838,-0.025344849,-0.011558533,-0.012756348,-0.0024700165,0.011604309,0.038238525,0.023208618,0.025772095,0.05718994,0.040649414,-0.0019817352,0.014625549,0.023635864,0.02494812,-0.004085541,-0.012290955,-0.025024414,-0.03829956,0.02470398,-0.025985718,-0.0289917,-0.05130005,0.053344727,0.03744507,0.05987549,0.025436401,0.028625488,0.033599854,0.028442383,0.01965332,-0.002998352,-0.022354126,-0.029144287,-0.017745972,0.022949219,-0.025604248,-0.004814148,-0.0072517395,0.0053749084,0.008361816,0.008712769,-0.02255249,0.03753662,-0.012329102,-0.010765076,0.03390503,0.020690918,0.039520264,0.027694702,-0.026382446,0.0131073,0.022720337,-0.042938232,0.025253296,0.015022278,-0.001244545,-0.007419586,-0.046020508,-0.03314209,0.0061569214,-0.014984131,-0.046051025,0.005126953,0.013763428,0.03451538,0.022216797,-0.03942871,-0.042144775,0.02017212,-0.012901306,-0.033325195,0.0021305084,-0.04800415,0.015396118,0.028427124,-0.039031982,0.032196045,-0.00390625,0.006511688,-0.006717682,-0.002040863,0.0023765564,-0.009208679,-0.03250122,0.026046753,0.0025291443,0.009017944,0.009346008,0.020874023,0.027496338,0.042266846,0.036621094,0.014915466,-0.013900757,-0.05340576,0.029418945,-0.04147339,-0.012641907,0.031463623,-0.030578613,0.012413025,0.006713867,-0.0087890625,-0.036956787,-0.0016012192,-0.017913818,0.004840851,0.014709473,-0.03540039,-0.0077819824,-0.05670166,-0.021499634,-0.024002075,0.061462402,0.0035743713,0.00756073,-0.068481445,0.0012693405,0.023956299,0.0064430237,0.0024986267,-0.014053345,-0.010169983,-0.012023926,-0.008399963,-0.02520752,-0.005783081,0.028060913,0.0021877289,-0.007118225,0.021743774,0.014709473,-0.0022792816,0.023483276,-0.015045166,0.028884888,-0.016448975,0.0037937164,0.008529663,0.038360596,0.016708374,-0.034820557,-0.046417236,0.042755127,-0.022537231,0.032470703,-0.039001465,-0.021728516,0.0019664764,0.0037879944,0.010116577,-0.0032482147,0.0007944107,-0.00052404404,-0.03338623,-0.05718994,0.03378296,-0.0034751892,0.04107666,0.03555298,0.011634827,0.035125732,-0.0068740845,0.011436462,-0.00058317184,-0.0357666,-0.026824951,-0.030685425,-0.037322998,-0.021347046,-0.001364708,-0.03213501,0.008255005,-0.009605408,0.008926392,-0.009422302,-0.025482178,0.05038452,-0.00082206726,0.0104522705,0.015670776,0.007194519,0.021270752,0.017669678,0.01953125,-0.058807373,0.046813965,-0.012710571,0.0040016174,-0.015701294,0.017227173,0.026031494,-0.037353516,0.019683838,-0.0066986084,-0.014625549,-0.011695862,-0.0003156662,-0.00039291382,0.0077285767,0.010192871,-0.049041748,0.025619507,0.0013818741,-0.017425537,-0.039367676,0.030090332,0.017929077,-0.036010742,0.025939941,0.032470703,0.041900635,-0.0018758774,0.0048828125,0.0044059753,0.041137695,0.03741455,0.009727478,-0.0030975342,0.042633057,-0.008010864,0.03466797,-0.0069122314,-0.00008535385,0.010635376,0.0074386597,0.023757935,0.023544312,0.011352539,0.0073928833,-0.048187256,-0.015365601,0.0099105835,-0.0135650635,0.027038574,0.0013523102,0.016708374,-0.012413025,0.017486572,0.0184021,-0.028366089,-0.00642395,0.009742737,0.04598999,-0.006011963,-0.0103302,0.0068740845,0.019088745,0.020111084,-0.062805176,-0.0055274963,-0.0053596497,0.013298035,-0.0038909912,-0.047607422,-0.024215698,-0.00043606758,0.036621094,-0.0014753342,0.0041542053,0.044128418,0.010231018,-0.006290436,0.021820068,0.0090408325,-0.00091695786,0.000034749508,-0.0440979,-0.014968872,0.0030727386,0.012496948,-0.021011353,0.026306152,-0.00024867058,-0.005908966,0.004837036,-0.03375244,0.01020813,-0.01701355,-0.004219055,0.041534424,-0.0012664795,0.005531311,-0.0014429092,-0.029785156,0.004245758,0.012763977,0.014663696,-0.024383545,0.028320312,-0.017990112,-0.00655365,-0.017578125,0.006614685,0.013221741,0.009490967,0.024505615,0.029571533,-0.030273438,0.042388916,-0.013397217,0.015007019,0.0015258789,-0.020584106,-0.014984131,-0.031982422,-0.016540527,0.03427124,-0.0008544922,-0.010520935,-0.027801514,-0.051940918,-0.018630981,-0.055877686,0.01576233,0.012420654,0.050109863,-0.010978699,0.013595581,-0.016906738,0.015342712,0.0060691833,0.0074005127,-0.023513794,0.04244995,0.008529663,0.012290955,0.0031147003,-0.020812988,-0.028060913,-0.0049209595,-0.060333252,-0.04144287,-0.00065755844,0.032287598,-0.001332283,-0.005519867,-0.035095215,-0.016647339,-0.000063717365,-0.016296387,0.010604858,-0.005832672,0.01890564,0.0026760101,0.005973816,0.006679535,0.025039673,-0.01826477,0.03753662,0.027694702,0.0018644333,-0.032318115,0.020141602,0.008934021,0.0039367676,-0.014221191,-0.018859863,0.0052375793,-0.029449463,-0.046569824,0.017608643,-0.0018520355,-0.013450623,-0.019515991,0.023605347,-0.04611206,0.0014543533,-0.058380127,-0.018447876,0.027038574,0.016571045,0.01966858,0.0018377304,0.011482239,0.0053749084,-0.0013256073,-0.0440979,0.015602112,0.009986877,0.013877869,0.013557434,0.05770874,0.0054969788,-0.01701355,-0.011436462,-0.036010742,0.009635925,-0.020507812,0.020339966,-0.002275467,0.009918213,-0.011665344,-0.0059013367,-0.046813965,0.015548706,0.06274414,-0.010528564,-0.013427734,-0.012756348,-0.0018777847,0.031051636,0.036956787,-0.030944824,0.0099105835,-0.011268616,0.013633728,-0.020004272,0.00932312,-0.008171082,0.025161743,-0.023757935,-0.05053711,-0.0063934326,-0.02973938,-0.011436462,-0.06536865,-0.031021118,-0.05026245,-0.0013856888,0.016525269,-0.02268982,0.011451721,0.02810669,-0.025558472,-0.08673096,0.00983429,0.03845215,-0.0068626404,0.028747559,0.0038452148,0.021911621,0.02407837,-0.0062065125,-0.022384644,-0.00014090538,-0.031402588,-0.0075569153,-0.03375244,0.027130127,-0.013580322,-0.005645752,0.012519836,0.0071754456,0.017074585,-0.011604309,-0.009140015,-0.026824951,0.00027561188,-0.011680603,0.017868042,-0.009712219,-0.0017776489,0.037872314,-0.05734253,0.035125732,0.021148682,0.007698059,0.0012683868,0.05026245,0.043762207,-0.03137207,0.014801025,0.014892578,0.02355957,0.052886963,-0.027542114,0.02128601,0.016952515,0.0022029877,-0.005306244,-0.0052986145,-0.0075149536,-0.03250122,-0.007701874,0.024169922,-0.0025501251,-0.009017944,-0.01625061,0.00076293945,0.013069153,0.025924683,-0.0014066696,-0.019744873,-0.022125244,-0.035247803,0.005001068,0.004234314,-0.0064735413,-0.010597229,0.025299072,0.033294678,0.04724121,0.02229309,-0.016235352,0.020492554,0.024917603,-0.011039734,-0.01574707,0.02192688,0.0050621033,0.019180298,0.021881104,0.02243042,-0.031204224,-0.022369385,-0.017974854,-0.009223938,0.012329102,-0.010528564,0.0073242188,0.0041122437,0.008132935,0.00749588,-0.020004272,0.00617218,-0.028701782,-0.041534424,-0.017669678,-0.0069122314,0.029190063,-0.013031006,-0.015609741,0.02885437,-0.015914917,0.04776001,0.002029419,-0.026870728,0.02218628,0.04071045,0.016296387,-0.022338867,-0.0039978027,-0.0056037903,-0.023391724,-0.0103302,-0.026519775,0.037597656,0.009284973,0.0014390945,0.012329102,-0.016220093,0.028778076,-0.022949219,0.0074005127,-0.015266418,0.016326904,-0.014091492,0.050811768,-0.03881836,0.03164673,0.022125244,-0.0046577454,0.010276794,0.0033664703,-0.02255249,0.030792236,0.014312744,-0.0025463104,0.025787354,0.00541687,0.04510498,-0.021499634,-0.014259338,-0.012870789,-0.01927185,-0.03164673,-0.0018634796,-0.016860962,-0.005935669,0.01777649,-0.02470398,0.029937744,-0.019332886,0.010940552,-0.00592041,0.005355835,-0.01322937,-0.0042381287,-0.01927185,-0.014778137,-0.023651123,0.0075683594,0.0024089813,0.06756592,0.016448975,0.034729004,0.028625488,0.021942139,0.018157959,-0.04336548,-0.029907227,0.005218506,-0.0032100677,-0.0011577606,-0.013435364,0.042785645,0.05340576,0.00015878677,0.040985107,0.010856628,0.032958984,0.0061302185,0.030090332,-0.027648926,0.016036987,-0.015792847,0.030426025,-0.015602112,0.032714844,-0.013771057,0.01979065,0.0040664673,0.025436401,-0.019592285,0.021316528,0.079956055,0.013069153,-0.013725281,0.01890564,-0.005027771,-0.030807495,-0.019744873,-0.032043457,0.047210693,0.016296387,0.02809143,0.058013916,0.017028809,0.024032593,0.018722534,-0.014251709,-0.009552002,0.057556152,0.02458191,0.00020372868,-0.024490356,-0.02319336,0.014984131,-0.027160645,-0.014915466,-0.0046539307,-0.03274536,0.00011694431,-0.003868103,-0.0074768066,-0.00605011,0.017608643,0.018127441,0.030807495,-0.015403748,0.0335083,0.01852417,0.0018434525,0.010421753,0.0066223145,0.021774292,-0.029342651,-0.022277832,0.019989014,0.030151367,-0.011512756,-0.025939941,0.029556274,0.00091409683,0.04611206,0.03753662,-0.024414062,-0.001455307,0.020812988,0.0043907166,0.004009247,0.060913086,0.027420044,0.00844574,0.043273926,0.032196045,0.031433105,-0.025314331,0.017715454,-0.012901306,-0.000073075294,-0.025314331,0.011184692,0.0135650635,-0.010887146,0.048339844,-0.004573822,-0.007446289,0.0037231445,0.028808594,0.0019721985,-0.0073928833,-0.024658203,0.0069503784,-0.017532349,-0.0067634583,0.022369385,-0.006801605,0.0135650635,0.006290436,0.03353882,-0.047668457,0.023071289,0.00554657,-0.02067566,-0.025787354,0.019760132,-0.04168701,0.0008225441,-0.0019569397,-0.009979248,-0.042541504,0.010948181,0.017807007,-0.011474609,0.01600647,0.013679504,0.001493454,-0.0082092285,0.031143188,0.011581421,-0.0014858246,-0.003484726,-0.020339966,0.0023899078,0.04135132,0.0101623535,-0.009315491,-0.016555786,-0.0046920776,0.0008277893,-0.0073623657,-0.0135650635,0.011672974,-0.014259338,-0.01828003,0.01826477,0.03225708,-0.0016183853,0.050628662,-0.01979065,-0.011413574,0.0048103333,0.03213501,0.0026760101,-0.031021118,-0.0146102905,0.018173218,-0.0309906,0.050323486,0.036621094,-0.004501343,0.031204224,0.017959595,-0.018600464,-0.0038223267,-0.025375366,0.031097412,-0.014389038,-0.0053749084,-0.0055389404,0.012550354,-0.01612854,-0.020812988,-0.0032787323,-0.023361206,-0.004924774,-0.003868103,0.013504028,0.0010871887,0.01864624,0.04147339,0.013618469,-0.012290955,0.057617188,-0.023208618,0.044769287,0.0033912659,-0.020706177,0.047851562,0.03753662,0.060943604,0.011108398,0.011871338,-0.028656006,0.033935547,0.030838013,0.022994995,0.007820129,0.010902405,-0.012466431,0.028259277,-0.0018596649,0.030838013,-0.006164551,-0.007575989,0.023132324,-0.023666382,-0.0035114288,-0.0008678436,-0.0056991577,0.0023841858,0.061065674,-0.03717041,0.0067329407,-0.026031494,-0.015899658,0.026062012,-0.013008118,-0.0068740845,-0.0002799034,-0.014083862,0.0231781,-0.018249512,0.0042304993,0.01928711,0.02734375,-0.041625977,-0.00071144104,0.021514893,-0.0012216568,-0.00995636,0.017562866,0.041259766,0.006248474,0.00047183037,0.03942871,-0.022720337,0.044128418,0.011146545,0.032989502,0.022628784,0.004875183,-0.012817383,0.016525269,0.014892578,-0.015159607,0.0060043335,0.02986145,-0.01689148,-0.0019683838,-0.0064468384,0.0035438538,-0.005592346,-0.0017566681,-0.013671875,0.008140564,-0.004299164,-0.019195557,0.009162903,0.017074585,-0.004257202,-0.00040221214,0.017486572,-0.006828308,0.014930725,0.017608643,0.035003662,-0.0473938,0.00078344345,0.0077171326,-0.00038981438,-0.0095825195,-0.020004272,-0.012069702,-0.042388916,0.005718231,0.0026302338,0.009880066,0.01876831,-0.021499634,-0.020965576,0.02017212,0.00957489,0.01449585,-0.012420654,0.0013542175,0.01878357,-0.037384033,0.008674622,-0.007369995,-0.014709473,0.017456055,0.025543213,-0.020904541,-0.021957397,0.009544373,-0.014312744,0.01878357,-0.0014343262,0.009689331,0.022384644,-0.0068473816,0.005317688,0.0028686523,0.02218628,-0.017578125,-0.0060653687,-0.0004553795,0.007865906,0.04916382,0.0027275085,0.008743286,0.014572144,0.034851074,0.02230835,0.031829834,0.020004272,0.046051025,0.027526855,-0.026901245,-0.0005912781,0.010505676,-0.00983429,-0.026794434,0.011924744,-0.02507019,-0.013114929,-0.0023097992,0.013069153,-0.0019083023,-0.037139893,-0.0046958923,-0.002714157,-0.0062446594,0.018936157,-0.018554688,0.023910522,-0.015327454,-0.0040512085,0.015686035,-0.024093628,-0.024169922,-0.024978638,-0.01687622,-0.015510559,-0.05831909,0.008239746,-0.027359009,0.010375977,-0.016738892,0.0059509277,0.009757996,0.011383057,0.0020122528,-0.023254395,0.0035533905,0.043914795,0.007801056,0.020187378,0.014404297,-0.02456665,-0.017364502,-0.015029907,0.0038585663,-0.022445679,0.041259766,-0.001209259,0.025314331,0.019348145,-0.050323486,-0.011657715,-0.013031006,-0.0073928833,0.0025501251,-0.00548172,-0.0073242188,0.0038394928,0.015853882,0.026382446,-0.0014219284,0.04309082,-0.029418945,0.0023040771,0.027877808,0.036712646,-0.0010948181,0.04736328,-0.020446777,-0.0009851456,-0.032836914,0.0031528473,-0.00019276142,0.0030174255,-0.0066871643,0.029571533,-0.0022735596,0.034942627,0.008239746,-0.020812988,0.011962891,0.02468872,0.012207031,0.02180481,0.025268555,0.015640259,0.011703491,-0.014701843,0.00021064281,-0.0084991455,0.05050659,0.023361206,0.0019254684,-0.018081665,0.0069389343,-0.02859497,0.0039405823,0.017044067,-0.01525116,-0.0413208,-0.017868042,-0.03704834,0.015060425,-0.006072998,0.014175415,-0.0031394958,0.0146865845,-0.0072669983,-0.02420044,-0.035583496,0.03125,0.01171875,-0.025497437,-0.004989624,-0.004753113,0.021881104,-0.014175415,-0.007286072,-0.045532227,-0.040161133,0.011131287,-0.010017395,0.04144287,-0.010810852,-0.007736206,-0.019104004,-0.0131073,-0.017974854,0.018127441,0.011978149,-0.010543823,-0.00187397,0.00655365,0.036254883,-0.009918213,0.031173706,-0.007369995,0.023925781,0.0022392273,-0.008026123,0.032196045,-0.014404297,0.022155762,0.0036334991,0.0037269592,0.028839111,-0.005317688,0.012001038,-0.048461914,-0.003004074,0.009666443,-0.0049438477,0.038208008,-0.0057296753,-0.039001465,0.000110924244,-0.030578613,-0.031677246,-0.0021858215,0.010360718,0.015213013,-0.0070648193,0.037963867,-0.0063972473,-0.012649536,0.0070991516,0.018035889,-0.026977539,0.00084733963,0.013725281,-0.021530151,0.008560181,-0.01209259,-0.013221741,-0.008216858,-0.021713257,-0.00014126301,-0.0045776367,0.0069007874,0.0027313232,0.028884888,0.02911377,0.010887146,0.02885437,-0.0007572174,0.013847351,0.03112793,0.016159058,0.03338623,-0.022766113,-0.017089844,-0.009742737,0.00381279,-0.023544312,0.022903442,0.0040283203,-0.007827759,-0.037902832,0.0071258545,0.004928589,0.03149414,0.0045547485,0.0206604,-0.015640259,-0.023666382,-0.016677856,-0.0075149536,-0.030151367,0.027053833,0.02986145,0.00061130524,0.021316528,0.005531311,-0.022583008,0.0028972626,0.04977417,-0.0031852722,-0.032348633,-0.023361206,0.008110046,-0.0030231476,0.006351471,0.012008667,-0.029067993,-0.0146102905,0.010406494,-0.014274597,-0.014854431,-0.008407593,0.017868042,0.009773254,-0.021331787,-0.027954102,0.019226074,-0.0033988953,-0.011619568,-0.005355835,0.005344391,0.027572632,0.025161743,-0.0072784424,-0.0012865067,0.030426025,-0.04425049,0.05987549,-0.01360321,0.022888184,-0.01914978,0.007774353,-0.057769775,-0.012374878,-0.00017690659,-0.010147095],"createdAt":"2026-04-18T19:26:25.855Z","updatedAt":"2026-04-24T06:32:42.836Z","lastSeenAt":"2026-04-24T06:32:42.836Z","tsv":"'/api':156 '/api/v1/transactions/348/receipt':89 '/docs':154 '/pricing':155 '/readme':158 '0.02':68,109 '000':98 '0x8335':103 '20':97 '2913':104 '348':39 '402':92 '6':113 'Base network API' 'USDC micropayment API' 'accept':138 'access':32 'actual':201 'advertis':48 'ai':57 'analyt':56 'api':52,80,197 'appear':187 'application/json':135 'base':5,18,76,99,106 'base-network' 'behind':40 'broader':45 'call':9,22 'categori':53 'challeng':93 'connect':164 'data':55,202 'decim':114 'demonstr':191 'detail':171 'discover':145 'document':146,180 'earli':194 'early-stag':193 'endpoint':3,16,28,88,137,207 'equal':108 'exact':121 'exampl':184 'extrem':151 'financ':60 'given':110 'header':129 'id':38 'includ':54,124 'infrastructur':63 'json-response' 'key':81 'learn':59 'limit':84 'lowpaymentfee' 'lowpaymentfee.com':30,46 'machin':58 'made':117 'mark':143 'marketplac':198 'mime':132 'network':77 'no-api-key' 'openapi':175 'page':159 'paid':6,19 'pay-per-call API' 'payment':115,128 'paywal':43 'per':8,21,69 'per-cal':7,20 'per-call-pricing' 'platform':47,186 'post':139 'price':66 'prompt':166 'provid':31 'rate':83 'receipt':2,15,36,206 'render':161 'request':70,94,140 'request/response':178 'requir':85 'resourc':37 'respons':131 'return':90,203 'schema':179 'scheme':122 'settl':71 'site':149 'spec':176 'specif':87 'stage':195 'suit':50 'technic':170 'thin':152 'transact':1,14,35 'transaction receipt API' 'transaction-receipt' 'type':133 'unit':100 'unspecifi':209 'usag':183 'usdc':13,26,73,102,111 'usdc-settlement' 'util':64 'via':10,23,118 'wallet':165 'web3':61 'x':127 'x-payment':126 'x402':11,24,42,120,196 'x402 paid endpoint' 'x402-payment'","prices":[{"id":"c65cdeb0-62cd-4634-bcee-8f8502226b5e","listingId":"c541658d-7fa7-49a2-aa2a-261410da29e0","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/348/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":"c541658d-7fa7-49a2-aa2a-261410da29e0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/348/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:26:25.855Z","lastSeenAt":"2026-04-24T06:32:42.836Z"}],"details":{"listingId":"c541658d-7fa7-49a2-aa2a-261410da29e0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/348/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/348/receipt"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/348/receipt"}],"useCases":["Retrieving a transaction receipt for record ID 348 via micropayment","Demonstrating x402 payment protocol integration on Base","Agent-driven pay-per-call data retrieval without API key management"],"bestFor":["Developers experimenting with x402 protocol payments","Agents needing keyless, pay-per-call API access on Base","Projects requiring USDC-settled micropayment endpoints"],"notFor":["Production workloads requiring documented request/response schemas","Bulk data retrieval where per-call pricing is inefficient","Users who need fiat payment rails or non-crypto settlement"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:37.933Z"},"updatedAt":"2026-04-24T06:32:42.836Z"}}