{"id":"40232cf1-e648-4f56-b379-2c3247e68ed3","shortId":"FT62y7","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/policies/97` is listed as \"Premium API Access\" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader platform offers endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request.\n\nThis particular endpoint (`/api/v1/policies/97`) is labeled \"Premium API Access\" but no further documentation describes what data or functionality it returns. The docs, pricing, and API pages behind the site require a wallet connection and yielded no additional content during crawl. Without schema details or example responses, the actual payload of this endpoint remains unknown.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","json-response","http-post"],"categories":["api-platform","infrastructure"],"synonyms":["low payment fee","x402 api","micropayment api","pay per call api","usdc api access","base network api","402 payment api"],"warnings":["No documentation available — docs, pricing, and API pages all require wallet connection and returned no content.","The specific functionality of /api/v1/policies/97 ('Premium API Access') is not described anywhere in the crawled material.","No OpenAPI spec, no request/response schema, and no example payloads are available.","The platform appears to be a generic demo or template site; the breadth of claimed endpoints (AI, finance, geocoding, etc.) at uniform $0.02 pricing is unverified."],"endpointUrl":"https://lowpaymentfee.com/api/v1/policies/97","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/policies/97","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC on Base at $0.02/request. However, there is no OpenAPI schema, no documentation beyond the landing page, no example request/response, and the actual functionality behind 'Premium API Access' at /api/v1/policies/97 is completely undocumented. This is effectively a stub listing.","verified":false,"liveness":"unknown","lastLivenessCheck":null,"agentReviews":{"count":0,"score_avg":null,"cost_usd_avg":null,"success_rate":null,"latency_p50_ms":null,"narrative_summary":null,"summary_updated_at":null},"enrichmentModel":"anthropic/claude-opus-4.6","enrichmentVersion":2,"enrichedAt":"2026-04-19T08:15:29.220Z","embedding":[-0.015777588,-0.04031372,0.04019165,0.012290955,0.01423645,-0.020370483,-0.031066895,0.019989014,0.07501221,-0.05621338,0.029052734,-0.04244995,-0.029678345,-0.03515625,-0.020187378,0.012992859,-0.0012865067,0.0039978027,-0.026229858,0.027420044,0.026519775,-0.0045166016,-0.03933716,0.031066895,0.01663208,-0.021591187,0.005619049,-0.0047035217,-0.008102417,-0.05630493,0.036010742,-0.028411865,-0.01474762,-0.0042304993,-0.015075684,-0.017089844,-0.008293152,0.030700684,0.018814087,0.0035514832,-0.011413574,-0.068603516,0.0036315918,-0.017242432,-0.0602417,0.002708435,0.0063705444,-0.02406311,0.00037503242,0.0017280579,-0.027786255,-0.016525269,-0.018661499,0.0032958984,0.0067634583,0.004951477,0.013191223,-0.01689148,0.012779236,0.018051147,-0.010482788,-0.05871582,-0.020233154,0.0045318604,0.014801025,0.05960083,0.0024776459,0.034606934,0.014717102,0.06842041,0.045410156,0.061706543,0.016799927,0.013420105,-0.010223389,-0.009437561,-0.0038070679,0.051971436,-0.0209198,-0.025726318,-0.00894928,-0.015113831,-0.043884277,0.012756348,-0.023117065,-0.037506104,-0.024139404,0.01914978,-0.008628845,0.027175903,-0.070495605,-0.002363205,-0.021850586,-0.0015058517,-0.00434494,-0.010368347,-0.006038666,0.022827148,-0.009567261,0.015823364,-0.00869751,-0.0418396,0.011955261,0.015296936,0.03552246,0.047058105,0.021957397,0.016983032,0.018112183,-0.012138367,-0.022979736,0.014968872,-0.009788513,0.0032997131,0.013999939,0.0046653748,-0.017059326,0.026489258,-0.023345947,0.03237915,-0.05731201,0.03878784,0.008056641,-0.012039185,0.009002686,-0.053741455,-0.01826477,0.018798828,-0.021469116,-0.009742737,0.019317627,0.01461792,0.030807495,-0.024246216,-0.037963867,0.029968262,-0.0022449493,-0.019882202,-0.05557251,-0.037628174,0.040496826,-0.02923584,0.020904541,0.03768921,-0.10418701,-0.0034179688,-0.04748535,0.006462097,-0.027374268,-0.006828308,-0.0028419495,0.030456543,-0.0056991577,-0.014167786,-0.030807495,-0.036010742,0.005180359,0.038085938,-0.006385803,0.051452637,-0.032043457,0.037475586,0.020980835,0.014877319,0.029937744,0.033996582,-0.0014419556,-0.0736084,-0.08746338,-0.023071289,-0.016311646,-0.014808655,-0.02015686,0.019500732,-0.009109497,-0.090148926,-0.02104187,-0.01889038,-0.001086235,-0.037902832,-0.0065345764,-0.038085938,0.0036563873,-0.015731812,-0.06732178,-0.023529053,-0.030441284,0.05593872,0.022659302,0.01940918,0.034210205,-0.016082764,0.057250977,0.022537231,-0.014945984,-0.019256592,0.013313293,-0.027679443,0.00970459,-0.0016374588,0.0054244995,-0.03250122,0.03765869,0.07434082,-0.0018186569,-0.015411377,-0.012527466,-0.05557251,-0.042022705,-0.046325684,0.011329651,0.014350891,-0.0018234253,0.03656006,-0.039855957,-0.033447266,0.0021018982,0.01360321,0.016693115,0.0793457,0.0057754517,-0.007659912,0.04083252,0.017364502,-0.062927246,0.043701172,0.020812988,0.013427734,-0.03274536,-0.025115967,0.023620605,0.037963867,-0.020568848,0.013839722,-0.019821167,0.031036377,-0.011619568,0.009757996,0.012298584,-0.020599365,-0.023239136,-0.023666382,-0.012420654,0.027786255,0.000028729439,-0.031341553,-0.034698486,-0.07244873,0.04119873,0.031829834,0.035736084,-0.0036087036,0.009185791,-0.027023315,-0.006175995,-0.058288574,0.06109619,0.06958008,0.00308609,-0.014854431,0.025924683,0.0020008087,-0.027053833,-0.0030078888,-0.019577026,-0.04147339,-0.016296387,0.01083374,-0.03475952,0.0041160583,0.016433716,0.022918701,0.050628662,-0.009902954,-0.053527832,-0.012992859,-0.003019333,-0.008026123,-0.027267456,0.011383057,-0.008476257,0.0073127747,0.004470825,0.005039215,0.028045654,-0.0068473816,-0.014167786,-0.0010690689,0.00065755844,-0.016433716,-0.035827637,0.021697998,-0.0035877228,-0.05697632,0.0028800964,0.0035495758,0.072509766,-0.05960083,0.041900635,-0.010597229,0.0013828278,0.05227661,-0.000019073486,-0.049865723,0.0046539307,0.029525757,0.024642944,0.03677368,0.008522034,-0.036010742,-0.015548706,0.06378174,-0.0067253113,-0.014007568,0.007675171,0.009773254,0.0362854,-0.00667572,-0.055786133,-0.0284729,0.002374649,-0.043945312,0.017181396,-0.033416748,0.028656006,-0.018692017,0.005756378,-0.020904541,0.013511658,-0.032989502,0.014877319,-0.0074653625,0.010894775,-0.018127441,-0.0025081635,-0.004901886,0.00982666,-0.011413574,0.0076560974,0.029052734,0.012611389,-0.0025691986,-0.027755737,-0.034057617,-0.0121536255,-0.0042877197,0.019882202,0.018936157,0.023162842,0.050842285,-0.03503418,0.0043182373,0.023406982,0.025527954,0.031066895,-0.009101868,0.011291504,-0.07348633,-0.05810547,-0.023132324,-0.036834717,0.028366089,0.016479492,-0.0028133392,0.039886475,0.0099487305,-0.025344849,-0.037139893,0.027160645,-0.041503906,-0.013092041,0.032104492,-0.028839111,-0.022232056,0.016036987,0.0025901794,0.0023956299,0.050628662,0.016799927,0.02746582,0.07446289,0.062042236,0.011100769,0.024368286,0.0068359375,0.028076172,0.0028381348,-0.026275635,-0.031341553,-0.021118164,0.041503906,-0.017333984,-0.0082473755,-0.07147217,0.051940918,0.03704834,0.089660645,0.019882202,0.005382538,0.032226562,-0.018859863,0.014511108,-0.017059326,-0.015792847,-0.03567505,-0.04324341,0.023406982,-0.017822266,-0.0048065186,-0.030380249,0.04019165,-0.0029850006,0.018234253,-0.02204895,0.052978516,-0.015670776,-0.01537323,0.015838623,0.008018494,0.04852295,0.07501221,-0.045776367,0.03829956,0.03173828,-0.01638794,-0.006298065,0.03277588,-0.009101868,-0.0059776306,-0.049682617,-0.026779175,-0.010543823,-0.00055122375,-0.052459717,0.0052375793,0.0076675415,0.012275696,0.028884888,-0.0076026917,-0.0041046143,-0.0051345825,-0.016494751,-0.048919678,0.00466156,-0.02822876,-0.0066337585,0.05050659,-0.018661499,-0.0023784637,-0.0024299622,-0.0066604614,0.0063285828,0.011299133,0.025772095,-0.007129669,-0.047821045,0.02633667,0.012573242,0.009048462,0.019882202,0.039215088,0.021347046,0.043670654,0.04083252,0.017730713,-0.015045166,-0.0690918,0.02154541,-0.057678223,0.008140564,0.025238037,-0.016159058,-0.005268097,-0.023529053,-0.02671814,-0.022705078,0.016174316,-0.035827637,0.009498596,0.010551453,-0.018753052,-0.028411865,-0.050628662,-0.015007019,-0.0011377335,0.05255127,0.037353516,0.016052246,-0.06402588,-0.0070381165,0.018585205,0.013145447,0.03842163,-0.014762878,-0.003522873,-0.022247314,-0.0287323,-0.0110321045,-0.03137207,0.028152466,-0.02281189,-0.016983032,0.010055542,0.002735138,0.017715454,0.011077881,0.0071029663,0.024765015,-0.022979736,-0.0057640076,-0.011886597,0.03555298,0.013175964,-0.0014028549,-0.050201416,0.0362854,0.021026611,0.020248413,-0.03527832,0.0044441223,-0.0069732666,0.008163452,0.011375427,-0.0011081696,-0.0002822876,-0.016143799,-0.045013428,-0.066589355,0.045959473,-0.030014038,0.02456665,0.017623901,0.008842468,0.025604248,-0.005092621,0.0052986145,0.018112183,-0.019454956,-0.0056762695,-0.01600647,-0.02418518,-0.03930664,-0.01789856,-0.026657104,0.028961182,-0.020324707,0.020217896,-0.0023975372,-0.015335083,0.022277832,-0.0090408325,-0.012283325,0.007358551,-0.0016889572,0.011985779,0.033203125,0.0071754456,-0.04345703,0.010810852,0.01222229,0.007446289,-0.003522873,0.037902832,0.030075073,-0.014312744,-0.0051193237,-0.004058838,-0.022720337,-0.020065308,0.000916481,0.012191772,0.017974854,0.002380371,-0.032318115,0.005722046,0.0077056885,-0.03692627,-0.026382446,0.011962891,0.0087509155,-0.037506104,0.02468872,0.03451538,0.049316406,-0.021347046,0.0019216537,0.00034070015,0.028778076,0.021209717,0.014205933,-0.0021190643,0.021987915,-0.0078125,0.009292603,-0.001745224,-0.009819031,0.02229309,0.0051879883,0.019454956,0.02381897,0.005710602,-0.03125,-0.032836914,0.005317688,-0.012229919,-0.02961731,0.027526855,0.021850586,0.01927185,-0.020584106,0.012886047,0.017944336,-0.012901306,-0.014472961,-0.011749268,0.042510986,-0.017730713,-0.015991211,0.013175964,0.017288208,0.03161621,-0.050048828,-0.0017986298,-0.000995636,0.0016012192,-0.031951904,-0.049621582,-0.032440186,0.008293152,0.04168701,0.01689148,0.011581421,0.031143188,0.013313293,0.009162903,0.024978638,0.00048089027,-0.005554199,-0.018753052,-0.03878784,-0.011604309,-0.017700195,-0.0042915344,-0.030593872,0.013389587,-0.008041382,-0.033477783,0.004085541,-0.0061912537,-0.004875183,-0.004211426,-0.00623703,0.021560669,0.0032863617,0.015808105,-0.020492554,-0.043884277,0.0010347366,0.0054740906,0.017456055,-0.04269409,0.016281128,-0.003293991,-0.012435913,0.013496399,0.017440796,0.02859497,0.038330078,0.0129776,0.036102295,-0.044708252,0.042053223,-0.031799316,0.013000488,-0.0027751923,-0.034362793,-0.011390686,-0.011795044,-0.010223389,0.03717041,-0.018478394,-0.007583618,-0.029251099,-0.031036377,-0.013969421,-0.05886841,0.0063934326,0.0446167,0.029968262,-0.020629883,0.0018692017,0.00012588501,0.002199173,-0.015312195,0.0063209534,-0.009460449,0.038085938,0.01576233,0.0026340485,-0.038635254,-0.023330688,-0.019744873,-0.0033626556,-0.03491211,-0.0541687,-0.010635376,-0.00907135,-0.009429932,-0.018920898,-0.024093628,-0.03277588,-0.0027179718,-0.04031372,0.008720398,0.008628845,0.0076026917,0.009475708,-0.037902832,0.010238647,0.019180298,-0.018173218,0.03579712,0.00730896,-0.004673004,-0.046875,0.017456055,0.012191772,0.022033691,-0.00970459,-0.018325806,-0.012046814,-0.021469116,-0.066223145,-0.004180908,-0.0042915344,-0.013710022,-0.0016784668,0.002029419,-0.053833008,-0.0038414001,-0.010955811,0.008979797,0.014404297,0.0015354156,0.010055542,0.006500244,0.015426636,-0.007045746,0.0053901672,-0.03677368,0.018554688,0.010826111,-0.00058698654,0.023803711,0.047210693,-0.005443573,-0.026138306,0.014328003,0.0104522705,0.014732361,-0.02418518,-0.0030536652,-0.018310547,0.00030446053,-0.012428284,-0.016799927,-0.04232788,-0.00093889236,0.08691406,0.0009551048,-0.014572144,-0.010406494,-0.022140503,0.020523071,0.043426514,-0.0284729,-0.011306763,-0.021911621,0.022064209,-0.022705078,0.008277893,-0.0041046143,0.014694214,-0.010986328,-0.048614502,-0.028839111,0.005508423,-0.013931274,-0.05380249,-0.02949524,-0.06768799,0.0009050369,-0.00970459,-0.033172607,-0.00036787987,0.0044174194,-0.014656067,-0.07647705,0.0039634705,0.053619385,0.010940552,0.024841309,-0.0069732666,0.028213501,0.025604248,-0.048309326,-0.016204834,0.026184082,-0.032104492,-0.020095825,-0.02217102,0.015991211,-0.014533997,-0.014350891,0.00033020973,0.0077056885,0.0181427,-0.011077881,0.006111145,-0.017822266,0.018432617,-0.014808655,0.02532959,-0.015853882,-0.0050315857,0.033996582,-0.04144287,0.019607544,0.012207031,-0.015609741,-0.006893158,0.023742676,0.038482666,-0.039001465,-0.02128601,0.02015686,0.012809753,0.037261963,-0.02609253,0.047424316,0.018325806,-0.025314331,0.022537231,-0.011955261,-0.018997192,-0.040222168,-0.030593872,0.0134887695,-0.022399902,0.022506714,-0.030807495,0.0036830902,0.018447876,0.0038013458,0.010551453,-0.01461792,-0.026321411,-0.02949524,0.0070114136,0.0022888184,-0.0034313202,-0.00084352493,0.02456665,0.025939941,0.03845215,0.019927979,-0.015586853,0.002111435,0.021331787,-0.01210022,0.009597778,0.027130127,0.00019872189,0.010772705,0.019699097,0.0104522705,-0.048095703,-0.009765625,-0.01725769,-0.025024414,0.002506256,-0.00065374374,-0.0006723404,-0.00970459,0.0070381165,-0.012794495,-0.035247803,0.0032520294,-0.024917603,-0.032836914,0.002374649,-0.022659302,0.015464783,-0.0058555603,0.00920105,0.007167816,-0.008483887,0.039245605,-0.008636475,-0.011436462,0.020324707,0.041625977,0.015205383,-0.021499634,-0.010269165,-0.013473511,-0.0029850006,-0.000027239323,-0.032440186,0.0056991577,0.052490234,-0.01928711,0.0061950684,0.012031555,0.028396606,-0.008293152,0.0053215027,-0.0020122528,0.025680542,-0.0071907043,0.038604736,-0.041778564,0.020889282,0.0041999817,0.0132751465,-0.016159058,-0.014221191,-0.02458191,0.009902954,0.0065345764,-0.018081665,0.05731201,0.013343811,0.027389526,-0.014076233,-0.037475586,0.005710602,-0.028396606,-0.017593384,0.029281616,-0.0012264252,0.0033855438,0.020431519,-0.016799927,0.046142578,-0.034729004,0.010307312,0.01007843,-0.005970001,0.0010442734,-0.024047852,-0.005001068,-0.007411957,-0.00349617,0.020019531,0.0013809204,0.044006348,0.009307861,0.03717041,0.045013428,0.024246216,-0.0027179718,-0.042388916,-0.02432251,0.008911133,-0.016693115,0.024276733,-0.015625,0.051635742,0.03414917,0.010185242,0.034820557,0.028945923,0.025497437,0.013168335,0.0035362244,-0.019104004,0.019515991,0.009048462,0.026824951,-0.0015125275,0.03918457,-0.035583496,0.033294678,0.009147644,0.023468018,-0.029708862,0.039367676,0.06518555,0.017089844,-0.00856781,0.04586792,-0.01309967,-0.020812988,0.00059604645,-0.009643555,0.049743652,-0.00016343594,0.048797607,0.046539307,0.020721436,0.00010937452,0.034729004,-0.026916504,-0.0284729,0.056671143,0.032043457,-0.027938843,-0.022125244,-0.0010690689,0.007888794,-0.038757324,-0.03552246,0.025405884,-0.005256653,0.000063061714,-0.005088806,0.0021743774,-0.005344391,0.006828308,0.015007019,0.0054397583,-0.009757996,0.031341553,0.037628174,-0.010231018,0.029891968,0.0054893494,0.0395813,-0.0181427,-0.023590088,0.022506714,0.025375366,-0.009918213,-0.006095886,0.013687134,0.009056091,0.03817749,0.042755127,-0.029464722,0.015930176,0.030670166,0.009033203,0.00062036514,0.04537964,0.039215088,0.009887695,0.033294678,0.028442383,0.038269043,-0.039398193,0.0132369995,-0.0044784546,0.0039978027,-0.008865356,-0.0037822723,0.0063285828,-0.020828247,0.008125305,-0.009544373,-0.003917694,0.03378296,0.028182983,-0.005680084,-0.0045394897,-0.010597229,0.010185242,-0.015510559,0.00012350082,0.014984131,-0.020065308,0.035980225,0.015007019,0.028076172,-0.018554688,0.024932861,0.0031719208,-0.028045654,0.004371643,0.018096924,-0.040527344,-0.007522583,-0.005016327,0.008049011,-0.053253174,0.009223938,0.03363037,-0.016433716,0.030380249,0.007293701,-0.004432678,-0.019332886,0.02633667,0.013549805,0.0019235611,-0.0073661804,-0.021942139,0.023132324,0.0390625,-0.005584717,0.002248764,-0.024459839,-0.0057640076,0.010772705,0.0057907104,-0.00057315826,-0.015319824,-0.01537323,-0.037322998,0.012489319,0.036376953,0.025863647,0.056884766,-0.024673462,0.000770092,0.0032596588,0.039398193,0.0037784576,-0.003396988,-0.0049819946,0.014221191,-0.016998291,0.047821045,0.030807495,0.006965637,0.033569336,-0.0038471222,-0.026275635,0.009536743,-0.0102005005,0.021514893,-0.011711121,0.002363205,-0.0028858185,0.023513794,-0.008911133,-0.034118652,0.0051193237,-0.017456055,-0.025146484,-0.016082764,0.014404297,0.0071487427,0.025482178,0.029434204,0.022705078,-0.018539429,0.06585693,-0.0062217712,0.044677734,-0.002117157,-0.010292053,0.052124023,0.017486572,0.03387451,0.014381409,0.017578125,-0.03274536,0.020233154,0.022323608,0.025024414,0.007774353,0.014953613,-0.013633728,0.032714844,0.0044441223,0.03048706,-0.00061035156,-0.0009403229,0.022323608,-0.0026550293,-0.004142761,-0.008407593,-0.0209198,0.0056762695,0.038879395,-0.025497437,-0.0010290146,-0.027313232,-0.018798828,0.028366089,-0.014167786,0.0051574707,0.006668091,-0.024520874,0.020263672,-0.013725281,-0.026809692,0.006137848,0.028213501,-0.0491333,-0.008857727,0.0008363724,0.020355225,-0.014053345,0.032226562,0.0284729,0.008834839,0.0006251335,0.0446167,-0.0040779114,0.031341553,-0.007785797,0.02217102,0.03475952,-0.0027198792,-0.021987915,0.0034446716,0.01689148,-0.010345459,0.010025024,0.040649414,-0.003917694,0.0018138885,-0.0035648346,0.0035381317,0.001127243,0.022079468,-0.014694214,0.0131073,-0.01335907,-0.020080566,-0.0059280396,-0.0007586479,0.00025200844,0.005580902,-0.0021514893,-0.014808655,0.012504578,0.03451538,0.024856567,-0.023330688,-0.0033035278,0.011390686,0.018753052,-0.024398804,-0.006958008,0.0009889603,-0.04611206,0.014549255,0.014862061,0.011497498,0.018539429,-0.021575928,-0.009521484,0.024459839,0.012191772,0.016571045,0.0034103394,-0.0036506653,0.017532349,-0.010528564,-0.0010871887,-0.0064430237,-0.009757996,0.0032310486,0.024765015,-0.006252289,-0.027832031,0.032287598,-0.0022068024,0.012145996,-0.0028495789,-0.01689148,0.015388489,-0.006790161,0.00055122375,-0.0023174286,0.008079529,-0.015808105,-0.0098724365,-0.011779785,0.04321289,0.049957275,-0.012992859,-0.008979797,0.02368164,0.017471313,0.017852783,0.03744507,0.00018680096,0.034454346,0.020629883,-0.026123047,-0.027755737,0.032196045,-0.020263672,-0.03274536,0.012779236,-0.021087646,-0.021194458,0.017105103,0.01121521,0.00071287155,-0.038391113,-0.0071640015,-0.012451172,-0.006164551,0.025314331,-0.00881958,0.011787415,-0.019607544,-0.016281128,0.00982666,-0.02470398,-0.056152344,-0.01852417,-0.0042266846,-0.013320923,-0.0552063,0.015075684,-0.02998352,0.017547607,-0.036956787,-0.0035133362,-0.016281128,0.015426636,-0.015945435,-0.0053215027,0.017929077,0.018707275,0.023635864,0.002670288,0.02192688,-0.026519775,-0.02935791,-0.023971558,0.0069351196,-0.0063972473,0.020431519,0.008552551,0.033996582,0.025390625,-0.0037231445,0.0019054413,-0.009902954,-0.011314392,-0.016815186,-0.0149002075,-0.024368286,0.021957397,0.01134491,-0.011428833,-0.014389038,0.046142578,-0.025634766,-0.022491455,0.03274536,0.051086426,0.012367249,0.032073975,-0.019073486,-0.006702423,-0.013305664,0.0062942505,-0.014060974,-0.0029315948,0.014022827,0.0053901672,-0.009605408,0.004432678,0.018829346,-0.012039185,-0.011634827,0.0287323,0.008674622,-0.0065574646,0.034301758,0.008232117,0.0033912659,-0.010475159,-0.009460449,0.016143799,0.052825928,0.015609741,0.0058021545,-0.014221191,0.0020999908,-0.014862061,0.009613037,0.009437561,-0.029144287,-0.041046143,-0.020889282,-0.031341553,0.027755737,-0.00082588196,0.009963989,-0.008422852,0.02923584,-0.016494751,-0.012420654,-0.023742676,0.023330688,0.015701294,-0.020202637,-0.010025024,0.007873535,0.018630981,-0.035095215,-0.0068206787,-0.031341553,-0.0234375,-0.0014696121,-0.02998352,0.027740479,0.018325806,-0.0029964447,-0.009338379,-0.0023555756,-0.0054092407,-0.0036411285,0.026611328,-0.018554688,-0.0059814453,0.028762817,0.019866943,-0.017730713,0.012786865,-0.006565094,0.0035953522,0.011505127,-0.011245728,0.010414124,-0.022384644,0.0395813,-0.0126571655,0.0017137527,0.032043457,-0.0036907196,0.013641357,-0.03552246,0.0064048767,-0.0024547577,-0.010940552,0.042633057,-0.029525757,-0.025360107,0.009361267,-0.019302368,-0.03326416,0.008270264,0.015853882,0.027496338,-0.004020691,0.046447754,-0.015411377,-0.007484436,0.02268982,0.016616821,-0.009498596,0.008804321,0.021942139,0.008468628,0.0010547638,-0.005542755,-0.013618469,-0.031280518,-0.0068740845,0.023162842,-0.011260986,-0.015945435,0.027572632,0.015960693,0.045013428,-0.0068473816,0.018569946,0.009017944,-0.00065612793,0.02796936,0.014732361,0.06512451,-0.014221191,-0.033813477,0.0026111603,0.0018663406,-0.025405884,-0.00007337332,-0.013404846,0.0026569366,-0.035461426,0.019592285,-0.002281189,0.005809784,-0.02633667,0.012939453,-0.023925781,-0.0077285767,-0.043273926,-0.0065345764,-0.029327393,0.011512756,0.028152466,0.0024089813,0.033721924,0.006866455,-0.018722534,0.022415161,0.04864502,-0.0043640137,-0.034454346,-0.013298035,0.010383606,0.009086609,0.0071372986,0.009925842,-0.029800415,-0.02267456,0.011764526,-0.01159668,0.013046265,-0.0030651093,0.01927185,0.011764526,-0.0018348694,-0.0072288513,0.020202637,-0.0016813278,-0.005355835,0.011177063,0.009094238,0.0362854,0.028182983,-0.0076560974,0.017730713,0.017684937,-0.03564453,0.051452637,-0.00054740906,0.012329102,-0.0234375,0.0013828278,-0.03881836,-0.021575928,-0.0015306473,0.0073547363],"createdAt":"2026-04-18T18:52:13.457Z","updatedAt":"2026-04-23T23:02:51.941Z","lastSeenAt":"2026-04-23T23:02:51.941Z","tsv":"'/api/v1/policies/97':56,159 '/request':13,28 '0.02':12,27,78,153 '000':72 '20':71 '402':66 '402 payment api' 'accept':46 'access':62,92,164 'across':112 'actual':203 'addit':192 'advertis':83 'ai':122 'analysi':126 'analyt':116 'api':5,20,38,61,85,163,180 'attach':95 'base':8,23,51,73 'base network api' 'behind':182 'broader':108 'call':4,19,80 'caller':93 'categori':114 'challeng':67 'classif':129 'connect':188 'content':193 'convers':146 'crawl':195 'data':115,119,171 'describ':169 'detail':198 'doc':177 'document':168 'embed':130 'endpoint':55,111,149,158,207 'estim':140 'exampl':200 'exchang':135 'export':120 'feed':134 'financ':131 'four':113 'function':173 'gas':139 'generat':147 'geocod':144 'header':100 'http-post' 'i.e':77 'infrastructur':142 'insight':121 'instant':91 'json-response' 'key':86 'label':161 'learn':124 'limit':89 'list':58,151 'low payment fee' 'lowpaymentfee.com':31 'machin':123 'metric':117 'micropayment api' 'network':9,24,52 'no-api-key' 'offer':110 'page':181 'particular':157 'pay':2,17,35 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':34 'payload':204 'payment':48,99,105 'per':3,18,36,79,154 'platform':6,21,39,82,109 'premium':60,162 'price':133,178 'proof':106 'protocol':44 'quot':138 'rate':88,136 'remain':208 'report':118 'request':37,68,155 'requir':185 'respons':201 'return':64,175 'schema':197 'sentiment':125 'simpli':94 'site':184 'specif':54 'summar':128 'text':127 'token':137 'unit':74 'unknown':209 'usdc':15,30,47,76 'usdc api access' 'usdc-base-network' 'use':41 'util':143 'valid':103,145 'via':10,25 'wallet':187 'web3':132 'without':196 'x':98 'x-payment':97 'x402':11,26,43,104 'x402 api' 'x402-payment' 'yield':190","prices":[{"id":"be0f223f-be01-43e1-9629-856ce1bb3dae","listingId":"40232cf1-e648-4f56-b379-2c3247e68ed3","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/policies/97","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:52:13.457Z"}],"sources":[{"listingId":"40232cf1-e648-4f56-b379-2c3247e68ed3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/policies/97","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:52:13.457Z","lastSeenAt":"2026-04-23T23:02:51.941Z"}],"details":{"listingId":"40232cf1-e648-4f56-b379-2c3247e68ed3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/policies/97 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requesting up to 20,000 base units of USDC ($0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/policies/97"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/policies/97"},{"claim":"The platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API data without signing up for an API key","Making one-off paid API calls settled in USDC on Base","Agent-driven workflows that need instant, keyless API access"],"bestFor":["Developers wanting frictionless pay-per-use API access","AI agents that can settle x402 payments autonomously","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume consumers who want bulk pricing or subscription discounts","Developers who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:01.86Z"},"updatedAt":"2026-04-23T23:02:51.941Z"}}