{"id":"66658ad8-2fef-41ed-8876-087274a901d2","shortId":"YaW2vj","kind":"x402","title":"Send a 1 USDC tip to an Ethereum address via x402 payment on Base network.","tagline":"Send a 1 USDC tip to an Ethereum address via x402 payment on Base network.","description":"This x402-enabled endpoint lets callers \"buy a coffee\" for the wallet address 0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87 by making a payment of up to 1 USDC (1,000,000 units in 6-decimal representation) on the Base network. The endpoint uses the x402 protocol's exact payment scheme: a GET request without a valid X-PAYMENT header returns a 402 challenge describing the required payment parameters, and a properly authenticated request with the payment header completes the transaction and returns a JSON response.\n\nThe payment is routed to the specified Ethereum address using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base). The maximum timeout for payment settlement is 300 seconds. The hosting application at x402-poc.vercel.app appears to be a proof-of-concept platform that allows anyone to create x402 tip links, each tied to a specific wallet address.\n\nDocumentation is minimal — the site provides only a landing page with a \"Create Tip Link\" interface and no dedicated docs, API reference, or pricing page. All technical details are inferred from the 402 challenge response itself. This is a simple, single-purpose tipping endpoint rather than a feature-rich API.","tags":[],"capabilities":["x402-payment","usdc-tipping","base-network","exact-payment-scheme","json-response","ethereum-address-payment"],"categories":["payments","crypto"],"synonyms":["x402 tip","crypto tip jar","USDC coffee","Base network payment","x402 tipping link","buy me a coffee crypto","402 payment endpoint"],"warnings":["No documentation available — /docs, /api, /pricing, and /README all return 404","Proof-of-concept application; no SLA or reliability guarantees implied","Successful (paid) response format is unknown — no output schema beyond mimeType: application/json","The wallet address in the URL is a specific third-party address; verify before sending funds"],"endpointUrl":"https://x402-poc.vercel.app/api/0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87/coffee","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402-poc.vercel.app/api/0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87/coffee","description":"buy 0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87 a coffee. ","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"1000000","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live and returns a well-formed x402 challenge with clear payment parameters. However, there is no documentation, no OpenAPI schema, no examples of a successful (paid) response, and the hosting site is a minimal proof-of-concept with no docs or pricing pages. All technical details are inferred solely from the 402 challenge.","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":"2026-04-18T19:00:29.383Z","embedding":[-0.02557373,-0.06512451,0.023468018,0.019714355,-0.005924225,-0.05029297,0.022399902,0.05026245,0.042175293,-0.05206299,0.028244019,-0.020584106,-0.043640137,-0.04815674,-0.005405426,0.016860962,0.0066719055,-0.0031547546,-0.01133728,0.05102539,0.0013437271,0.035125732,0.0140686035,0.03225708,0.0065994263,-0.009231567,-0.009231567,0.008872986,-0.025177002,-0.040039062,0.008079529,-0.02293396,-0.019424438,-0.019760132,-0.017623901,-0.0068588257,0.028793335,0.049224854,-0.00957489,0.04510498,0.016860962,-0.04864502,0.03768921,-0.01651001,-0.047698975,0.01486969,0.010505676,-0.009284973,0.016082764,0.00497818,-0.014282227,0.005382538,-0.023223877,0.015686035,-0.038848877,-0.0181427,-0.0038833618,0.0017213821,0.027359009,0.028823853,0.0028877258,-0.068847656,-0.013839722,0.0073432922,0.02243042,0.058624268,-0.038909912,0.03152466,-0.00079250336,0.09210205,0.024780273,0.04067993,0.03729248,-0.0063591003,0.028427124,-0.001326561,0.0059509277,0.020828247,-0.002538681,-0.044952393,0.008529663,-0.05508423,-0.06921387,0.019348145,-0.042053223,-0.056121826,-0.023727417,0.014564514,-0.016326904,0.013702393,-0.06781006,-0.031097412,0.0026378632,0.004299164,0.008323669,-0.029663086,-0.026763916,-0.0006585121,0.003709793,0.0031757355,0.013435364,-0.018341064,0.0063323975,0.018066406,0.05508423,0.033325195,0.031707764,0.028427124,0.0022277832,0.003501892,-0.014709473,0.00087451935,-0.0009608269,-0.009811401,0.027511597,-0.012802124,0.008201599,0.0052757263,-0.045776367,0.037506104,-0.05429077,0.029922485,-0.019165039,0.03488159,-0.02330017,-0.060668945,-0.04019165,0.0072784424,-0.019378662,-0.0017976761,0.023376465,0.0007042885,0.0035381317,-0.01159668,-0.029129028,0.017333984,-0.022888184,-0.020553589,-0.04058838,0.0057792664,0.021606445,-0.04650879,0.021438599,0.039733887,-0.033203125,-0.032714844,-0.03942871,0.024932861,-0.037628174,-0.040374756,0.0051231384,-0.0043678284,-0.0023384094,-0.0077285767,-0.038208008,-0.048553467,-0.028686523,0.06542969,-0.0463562,-0.012954712,-0.0059394836,0.007949829,0.007610321,0.008674622,-0.0073242188,0.027236938,-0.035736084,-0.053985596,-0.05581665,0.002336502,-0.031433105,-0.0059432983,-0.013298035,0.045715332,-0.01247406,-0.09259033,-0.01838684,-0.0073509216,0.02154541,-0.0005159378,0.030075073,-0.017303467,0.009941101,0.0021953583,-0.04309082,-0.009277344,-0.03778076,0.044952393,0.016082764,0.0058937073,0.010421753,-0.011795044,0.010108948,0.028579712,-0.010734558,0.0010757446,0.003686905,-0.027954102,0.03930664,-0.01499939,0.029678345,0.02520752,0.021911621,0.081604004,-0.030853271,-0.016098022,0.013938904,-0.038391113,-0.03967285,-0.0019798279,0.010848999,-0.003534317,-0.057006836,0.02357483,-0.05328369,-0.028686523,0.014701843,0.018234253,-0.022750854,0.041931152,-0.03250122,0.0017700195,0.057281494,0.03125,-0.03543091,0.049041748,0.027679443,0.023239136,-0.009552002,-0.008964539,0.026947021,0.030776978,-0.0064201355,-0.0065460205,-0.026504517,0.03491211,-0.023284912,-0.0077323914,-0.013473511,-0.043273926,-0.040924072,-0.005836487,-0.011756897,0.0010643005,-0.013931274,-0.018035889,-0.023513794,-0.06463623,0.02986145,0.04434204,0.03604126,0.015457153,0.007827759,-0.01940918,0.0031108856,-0.078125,0.06732178,0.061309814,0.018859863,-0.039031982,0.048828125,-0.022720337,-0.053619385,0.02482605,-0.01751709,-0.024887085,-0.005432129,-0.0074920654,-0.008079529,0.0146484375,0.031463623,0.011383057,0.01235199,0.016830444,-0.05102539,-0.012931824,-0.030670166,0.009017944,-0.05203247,-0.015625,-0.027938843,-0.0051612854,0.014022827,-0.0064353943,0.014007568,0.0017719269,-0.016662598,-0.0055007935,0.022842407,-0.008056641,0.016845703,0.035064697,0.021102905,-0.03677368,0.016021729,0.012321472,0.062072754,-0.054718018,0.04159546,0.0034046173,0.0042037964,0.074523926,-0.024215698,-0.047454834,-0.024612427,0.032928467,0.012260437,0.030578613,0.047576904,0.011695862,-0.045043945,0.04107666,0.0058784485,0.015808105,0.009025574,0.019622803,0.05947876,0.0022010803,-0.03829956,-0.03781128,0.000975132,-0.018356323,0.007171631,-0.026184082,0.031173706,-0.022323608,0.00044703484,-0.02482605,0.0022640228,-0.03414917,0.0013179779,-0.0010232925,0.010559082,-0.0043411255,-0.02470398,-0.015205383,-0.007637024,-0.024337769,0.03274536,0.071777344,0.0013790131,-0.01687622,-0.0022411346,-0.04562378,-0.03933716,-0.024734497,0.010505676,-0.0022506714,0.029556274,0.052093506,-0.043304443,0.0059318542,0.0010604858,-0.010414124,0.026321411,0.037109375,-0.0074157715,-0.054107666,-0.060516357,-0.047058105,-0.021652222,0.02897644,0.025634766,-0.00056123734,0.047424316,0.005104065,-0.009124756,-0.014930725,0.0027942657,-0.033996582,-0.009735107,0.0513916,-0.020568848,-0.013626099,0.020751953,0.04736328,0.012763977,0.0423584,0.024505615,0.027908325,0.083740234,0.014213562,-0.017593384,-0.012825012,0.010063171,-0.0058288574,0.033691406,0.013717651,0.0021038055,-0.09265137,0.023330688,-0.036193848,-0.024291992,-0.010025024,0.07330322,0.06542969,0.06939697,0.018493652,0.014289856,0.014923096,0.0049324036,-0.008682251,0.012298584,-0.047058105,-0.024276733,-0.019515991,0.023223877,-0.0045776367,-0.014282227,-0.00932312,0.018066406,-0.0234375,0.020370483,-0.008369446,0.048065186,-0.008369446,-0.031829834,-0.013656616,0.026351929,0.049835205,0.020004272,-0.004547119,0.0126571655,0.0026874542,-0.020095825,0.013877869,0.002494812,0.018096924,0.02772522,-0.054260254,-0.011711121,0.010856628,0.017196655,-0.004184723,-0.002532959,-0.023666382,0.012557983,0.027313232,-0.0003733635,-0.013343811,-0.051208496,0.021057129,-0.009002686,-0.0063056946,-0.016525269,-0.009048462,0.022720337,-0.030883789,0.02015686,0.005344391,0.0050468445,-0.0032863617,0.020996094,0.030181885,-0.0087509155,-0.015731812,0.018585205,-0.00233078,0.020446777,0.01499939,0.038879395,0.02798462,0.018722534,0.022644043,-0.0051651,0.009231567,-0.026504517,0.026016235,-0.016998291,-0.018753052,0.020095825,-0.021377563,0.0061912537,-0.0029125214,-0.015052795,-0.041992188,0.029403687,-0.028244019,0.034698486,0.057861328,-0.025222778,-0.034942627,-0.071777344,-0.0029144287,0.014671326,0.06903076,0.02482605,0.0063476562,-0.029846191,-0.0041923523,0.01675415,0.004436493,-0.023010254,-0.014381409,-0.0017690659,-0.016647339,-0.016662598,-0.024902344,-0.00016272068,0.02067566,-0.01386261,-0.004386902,-0.0044021606,0.0022888184,-0.0012388229,0.015426636,-0.0020503998,0.021102905,-0.014778137,-0.009010315,-0.033691406,0.012016296,0.0023403168,0.00044703484,-0.05682373,0.012634277,-0.03225708,0.0074539185,-0.036071777,-0.0030288696,-0.039123535,0.027832031,0.010253906,-0.0054397583,0.026779175,0.014762878,-0.022354126,-0.10675049,0.05480957,0.010665894,0.020523071,0.0042495728,-0.009147644,0.0059165955,-0.0034236908,-0.03048706,-0.007499695,-0.00091934204,0.0022621155,-0.023162842,-0.0262146,-0.022872925,-0.008903503,-0.031143188,0.018615723,-0.030700684,0.0038795471,0.04058838,-0.014930725,0.020355225,-0.005443573,-0.0154800415,-0.008613586,0.009239197,0.030288696,0.047973633,-0.0011415482,-0.025787354,0.025466919,-0.005634308,0.0003247261,0.001953125,0.0010490417,0.017242432,-0.003194809,-0.011306763,-0.019622803,0.033691406,-0.04034424,-0.009635925,-0.030334473,0.011619568,0.018600464,0.0024528503,0.0030937195,0.023406982,-0.00856781,-0.016159058,0.012619019,0.026351929,-0.029571533,0.021453857,0.026062012,0.030548096,-0.014152527,-0.021362305,-0.0036029816,0.028457642,0.0131073,0.008613586,0.00089740753,0.021362305,-0.034484863,0.02243042,-0.00012624264,-0.038238525,0.0057678223,0.01638794,0.022659302,0.007282257,0.0011434555,-0.0143585205,-0.020446777,-0.009414673,-0.011749268,-0.024871826,0.022262573,0.015388489,0.025283813,-0.016433716,0.006336212,0.014160156,-0.009773254,-0.039154053,-0.0010061264,0.028686523,0.0155181885,-0.0065460205,-0.002658844,0.009841919,0.027282715,-0.043121338,0.02758789,-0.01675415,-0.0077667236,-0.0008044243,-0.042419434,-0.018463135,-0.028579712,0.03302002,0.0022640228,0.00069093704,0.029403687,0.00030231476,-0.025924683,0.03062439,-0.009689331,-0.027252197,-0.007987976,-0.06149292,-0.0061569214,-0.01802063,0.040740967,0.001458168,0.0076293945,0.018676758,-0.027511597,0.032836914,-0.019943237,0.0072250366,-0.01424408,0.00040721893,0.0657959,-0.011619568,0.02381897,-0.016967773,-0.019104004,-0.0070495605,0.041107178,0.012313843,-0.020004272,0.017349243,0.011459351,-0.005104065,-0.0016851425,0.0013341904,0.0054969788,0.039978027,-0.0061950684,0.007461548,-0.035125732,0.010063171,-0.039031982,0.008842468,0.011428833,-0.023895264,-0.017807007,-0.034606934,0.000300169,0.028762817,-0.013114929,-0.00907135,0.007972717,-0.04837036,0.005783081,-0.055145264,0.0013370514,0.022354126,0.032348633,-0.019012451,-0.008239746,-0.017501831,0.04147339,-0.003446579,0.01537323,-0.036254883,0.03894043,0.016204834,0.013954163,-0.070617676,-0.009277344,-0.00024700165,0.017486572,-0.02255249,-0.02041626,-0.030471802,0.002828598,0.0046310425,-0.01386261,-0.020904541,-0.024520874,-0.035491943,-0.022781372,-0.016311646,-0.02947998,0.017120361,0.019561768,-0.019577026,-0.004722595,-0.002998352,-0.02319336,0.03768921,-0.0057144165,0.007434845,-0.029220581,-0.013153076,-0.007980347,-0.0062675476,-0.025665283,-0.00920105,-0.0126953125,-0.029129028,-0.02658081,0.001156807,-0.032440186,0.041992188,-0.04434204,-0.0054626465,-0.068115234,-0.00248909,-0.036834717,-0.004611969,-0.0090408325,-0.0074386597,0.04058838,0.017868042,0.04296875,-0.017120361,-0.01828003,-0.04486084,0.006515503,0.010818481,-0.014152527,0.02293396,0.03387451,0.003019333,-0.0026817322,0.008583069,-0.030517578,0.024642944,-0.024658203,0.009231567,-0.05078125,0.03692627,-0.005630493,-0.004043579,-0.023071289,-0.0035858154,0.0637207,0.007472992,0.0034599304,0.0075263977,-0.026779175,0.019317627,0.051696777,-0.052886963,-0.021713257,-0.010925293,-0.01335144,-0.03265381,-0.0042037964,-0.013381958,0.010765076,-0.008605957,-0.00969696,-0.030654907,-0.0035705566,0.0038146973,-0.009902954,-0.05203247,-0.02130127,-0.0022392273,-0.02180481,0.0009326935,-0.00040316582,0.013206482,-0.029846191,-0.06756592,-0.01776123,0.076049805,-0.009819031,-0.010734558,-0.01889038,0.0076446533,0.008300781,-0.01928711,-0.028930664,0.0040512085,-0.02911377,-0.018295288,-0.047332764,0.021316528,-0.031707764,-0.014656067,-0.0043029785,0.00054836273,0.01953125,-0.040985107,-0.020614624,0.0015354156,-0.007270813,0.007675171,0.0022621155,-0.025177002,-0.015960693,0.025650024,-0.033050537,0.025482178,0.0061683655,-0.0029716492,-0.0045051575,0.028900146,0.018615723,-0.035614014,-0.009292603,0.009849548,-0.011291504,0.05319214,-0.03579712,0.024505615,-0.008842468,0.022613525,0.016357422,-0.029403687,0.002784729,-0.0335083,-0.008552551,0.004886627,-0.006450653,0.0039367676,-0.027679443,0.0025310516,0.020568848,0.02923584,0.016220093,-0.0064468384,-0.029129028,-0.013160706,0.015640259,-0.0146102905,-0.013420105,-0.008270264,0.018707275,0.0017299652,0.025039673,0.034973145,-0.035125732,-0.01889038,0.045440674,0.03479004,0.029785156,0.016113281,-0.0084991455,-0.0015983582,0.009773254,0.030929565,-0.03451538,-0.025665283,0.00013792515,-0.019546509,0.010246277,0.011795044,-0.021255493,0.0019702911,0.018325806,0.0030174255,-0.03338623,0.018432617,-0.009284973,-0.01876831,-0.009902954,-0.005672455,0.007598877,-0.007003784,0.0002579689,-0.0005955696,-0.018554688,0.022964478,0.00844574,-0.02571106,0.031204224,0.028503418,0.013511658,-0.0184021,0.009460449,0.00024962425,-0.022598267,-0.023620605,-0.040374756,0.005302429,0.03765869,-0.039215088,0.00907135,0.013008118,0.058380127,0.013938904,0.016647339,-0.007095337,0.013847351,-0.025039673,0.01576233,-0.06323242,-0.0050468445,0.00015377998,-0.013031006,-0.033569336,0.004890442,-0.006122589,0.051879883,0.01977539,-0.016937256,0.024154663,-0.013084412,0.010292053,-0.00018274784,-0.04901123,0.015510559,-0.032928467,-0.0491333,0.01210022,-0.034820557,-0.0027942657,0.019012451,-0.034240723,0.026351929,-0.023788452,-0.011352539,0.027801514,-0.0072898865,0.0019626617,-0.02017212,0.006641388,-0.025604248,-0.0143966675,0.010391235,0.0062179565,0.038024902,0.016220093,0.0146865845,0.01499939,0.03918457,0.007663727,-0.033294678,-0.043395996,0.015365601,-0.007106781,0.0022830963,-0.007648468,0.0635376,0.04006958,0.028793335,0.06530762,0.004852295,0.049041748,0.0046806335,0.0050468445,-0.017059326,0.021896362,-0.018066406,0.025146484,-0.031799316,0.038604736,-0.047973633,0.020462036,0.016067505,0.017745972,-0.010719299,0.03994751,0.050750732,0.03652954,-0.0074005127,0.022583008,-0.011238098,-0.024765015,-0.016036987,-0.018188477,0.034606934,0.013175964,0.02470398,0.02670288,0.031951904,-0.016296387,0.043060303,-0.024414062,-0.01424408,0.018920898,0.017837524,-0.015991211,-0.026153564,0.017211914,0.03475952,-0.024658203,-0.020187378,0.030838013,-0.012580872,-0.008239746,0.0050811768,0.00019025803,-0.02279663,-0.010719299,0.030395508,0.031204224,-0.00013875961,0.05441284,0.02470398,-0.01474762,0.028045654,-0.003479004,0.010307312,-0.013206482,-0.010627747,0.0074005127,0.005092621,-0.004776001,-0.018692017,0.0155181885,0.0038661957,0.0056152344,0.027252197,-0.0004968643,-0.023880005,0.009613037,-0.0079574585,-0.012687683,0.053741455,0.037384033,0.00957489,0.018203735,0.005680084,0.0345459,-0.062072754,-0.009689331,0.013748169,-0.0038089752,0.003856659,0.018966675,0.02949524,-0.0040779114,0.03479004,0.003993988,0.018829346,-0.01838684,0.014701843,-0.027282715,-0.0026664734,-0.025100708,0.018295288,-0.03744507,0.017501831,0.002752304,0.0054626465,0.03741455,0.009033203,0.049865723,-0.03387451,0.0178833,-0.0032749176,-0.009010315,-0.0067634583,0.01751709,-0.013702393,0.03378296,-0.024154663,-0.019165039,-0.015701294,0.014930725,0.022003174,-0.04019165,-0.0045394897,-0.012504578,-0.0047302246,-0.008918762,0.045013428,0.030929565,-0.0039634705,-0.015289307,-0.039123535,-0.004711151,0.05596924,-0.023620605,-0.018737793,-0.02973938,-0.0052948,0.015090942,-0.0075302124,0.026229858,-0.015670776,0.004562378,-0.04623413,0.035461426,0.03250122,0.018371582,0.014762878,-0.011810303,0.0077667236,-0.00217247,0.04724121,0.0049743652,-0.00919342,-0.019882202,0.012138367,-0.047607422,0.028060913,0.03363037,-0.017990112,0.03475952,0.014945984,-0.03186035,-0.03677368,-0.02255249,0.009277344,-0.028869629,-0.046905518,-0.01713562,0.04196167,-0.019638062,-0.009635925,-0.0055770874,-0.009605408,-0.042175293,0.021102905,0.048675537,0.0003786087,0.015548706,0.04043579,0.020004272,-0.020904541,0.055725098,-0.025131226,0.025817871,0.03164673,0.01864624,0.06652832,-0.012580872,0.037231445,-0.0063323975,0.009407043,-0.02368164,0.011894226,0.027908325,0.022460938,0.019012451,-0.0101623535,-0.010826111,0.016494751,-0.0075569153,0.010047913,-0.010726929,-0.00944519,0.011177063,0.017944336,-0.0037231445,-0.0061798096,-0.012336731,0.0026817322,0.029571533,-0.020553589,-0.009735107,-0.014877319,0.013931274,0.015930176,-0.013511658,-0.0009841919,-0.019989014,-0.021057129,0.032409668,-0.020065308,-0.018417358,0.0015516281,0.02104187,-0.04159546,-0.011451721,0.021911621,0.037841797,-0.032989502,0.010154724,0.045806885,0.0032043457,-0.0022449493,0.049957275,0.0011253357,0.021499634,-0.020187378,0.006511688,0.038208008,0.03933716,0.0044822693,0.022888184,0.015930176,-0.0073509216,0.050964355,0.025482178,0.017532349,0.0024089813,-0.009643555,-0.019195557,-0.0062828064,0.012283325,-0.014656067,0.023925781,-0.022354126,-0.024246216,0.022460938,-0.00044870377,-0.0044822693,0.007881165,0.015037537,-0.0039901733,0.028244019,0.015609741,0.042419434,-0.034057617,-0.001077652,-0.00038027763,0.010910034,-0.016845703,0.0072898865,0.015167236,-0.021484375,0.014045715,0.022567749,0.007774353,-0.010360718,-0.0057373047,-0.023406982,0.013435364,0.0027484894,0.0014762878,0.018005371,0.047607422,0.029449463,0.011566162,-0.0031528473,0.0031547546,-0.0049858093,0.0146484375,0.03012085,-0.024795532,-0.03604126,0.0011043549,0.009429932,0.00042796135,-0.011947632,0.0015850067,-0.010406494,-0.008766174,0.02532959,-0.010513306,0.014801025,0.0009455681,-0.0068206787,-0.006412506,0.002407074,0.04498291,-0.017456055,-0.020004272,0.010047913,0.045013428,0.025527954,0.01184082,-0.005138397,0.024978638,0.020187378,-0.019729614,-0.012802124,0.013877869,-0.0032081604,-0.027648926,0.022125244,-0.014579773,-0.03253174,0.017684937,0.008338928,-0.016937256,-0.011398315,-0.020904541,-0.014907837,-0.016693115,0.017974854,0.014633179,-0.035858154,-0.014305115,-0.017456055,0.006324768,-0.04840088,-0.005054474,-0.00017106533,-0.0011234283,-0.010063171,-0.03189087,0.016601562,-0.009857178,-0.004550934,-0.005241394,0.0012788773,-0.006401062,-0.0032444,0.0021781921,-0.03149414,0.00806427,0.018707275,0.02406311,-0.03201294,0.019714355,-0.023025513,-0.01777649,0.0031776428,0.0070610046,-0.010871887,0.017364502,0.0027046204,0.012191772,-0.0020618439,-0.033203125,-0.00059747696,0.001162529,-0.034820557,-0.033233643,0.008583069,-0.05065918,0.02822876,0.0075531006,-0.002407074,0.010719299,0.036468506,-0.020462036,0.0014657974,0.03149414,-0.014450073,-0.003967285,0.037353516,0.017456055,-0.033966064,-0.02168274,0.001376152,-0.013549805,0.012840271,0.001077652,0.032409668,-0.0071144104,0.04534912,0.022705078,0.010177612,-0.011169434,0.011978149,0.021316528,-0.006500244,0.025238037,-0.0008621216,-0.013191223,-0.010734558,-0.012619019,0.009414673,0.03375244,0.00031661987,0.009498596,-0.0035152435,0.008796692,0.00021457672,0.0052375793,0.056640625,-0.0070152283,-0.031555176,-0.008163452,-0.018630981,-0.00655365,-0.00036644936,-0.008216858,-0.0076293945,-0.0050239563,0.00730896,-0.02003479,0.013694763,0.026260376,0.016311646,-0.011810303,0.017593384,0.015403748,-0.0034427643,-0.038757324,-0.0032787323,-0.048553467,-0.010765076,-0.013626099,-0.014701843,0.010787964,0.03189087,0.00007855892,-0.0021800995,-0.028747559,0.000033080578,0.0053138733,-0.0027580261,-0.013015747,0.014205933,0.02015686,0.011108398,-0.032165527,0.030807495,-0.021224976,-0.010307312,0.013442993,0.010421753,-0.0035057068,-0.017364502,0.037475586,-0.019256592,-0.009689331,0.0016288757,-0.0010347366,-0.0060272217,-0.031036377,0.008041382,-0.000114917755,-0.011566162,0.00504303,-0.0027122498,-0.027511597,0.006690979,-0.009933472,-0.031402588,0.017364502,0.0035762787,0.026229858,-0.012687683,0.015403748,-0.026443481,-0.037017822,0.0033111572,-0.017929077,-0.030410767,0.013015747,0.0390625,-0.011398315,-0.0043640137,-0.022018433,-0.0056610107,-0.0031337738,-0.0023784637,-0.0206604,-0.028793335,-0.0010633469,0.027053833,0.039367676,0.02432251,-0.008399963,0.009429932,0.02607727,0.006038666,0.028671265,0.010551453,0.016036987,-0.0018472672,-0.0155181885,-0.0016965866,0.025878906,0.006122589,0.008407593,0.000061035156,0.00705719,-0.028121948,0.025527954,0.016036987,0.013877869,0.002407074,0.013900757,-0.017120361,0.027404785,-0.035705566,0.0071525574,-0.0058937073,0.015151978,0.013839722,-0.0028057098,0.0021705627,-0.013290405,0.014968872,0.029190063,0.04397583,-0.02003479,-0.061920166,-0.011924744,0.0019683838,0.0015888214,-0.036590576,0.018692017,-0.0131073,-0.017349243,-0.020706177,0.0064849854,-0.008918762,-0.0067214966,0.022201538,-0.001001358,-0.022079468,0.002998352,0.03149414,-0.006755829,0.007507324,0.008895874,0.009506226,-0.0030784607,0.029342651,0.0006380081,0.012664795,0.011367798,-0.034240723,0.05239868,-0.015464783,0.006515503,-0.019638062,0.0023899078,-0.02947998,-0.026382446,-0.023162842,-0.017654419],"createdAt":"2026-04-18T18:30:44.824Z","updatedAt":"2026-04-25T03:02:15.778Z","lastSeenAt":"2026-04-25T03:02:15.778Z","tsv":"'000':56,57 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':125 '0xd5ffeb6c070720d10f0e80e3c5a181cc8daaef87':45 '1':3,18,53,55 '300':135 '402':89,198 '402 payment endpoint' '6':60 'Base network payment' 'USDC coffee' 'address':9,24,44,121,165 'allow':152 'anyon':153 'api':186,217 'appear':142 'applic':139 'authent':99 'base':14,29,65,127 'base-network' 'buy':38 'buy me a coffee crypto' 'caller':37 'challeng':90,199 'coffe':40 'complet':105 'concept':149 'contract':124 'creat':155,178 'crypto tip jar' 'decim':61 'dedic':184 'describ':91 'detail':193 'doc':185 'document':166 'enabl':34 'endpoint':35,68,210 'ethereum':8,23,120 'ethereum-address-payment' 'exact':74 'exact-payment-scheme' 'featur':215 'feature-rich':214 'get':78 'header':86,104 'host':138 'infer':195 'interfac':181 'json':111 'json-response' 'land':174 'let':36 'link':158,180 'make':47 'maximum':129 'minim':168 'network':15,30,66 'page':175,190 'paramet':95 'payment':12,27,49,75,85,94,103,114,132 'platform':150 'price':189 'proof':147 'proof-of-concept':146 'proper':98 'protocol':72 'provid':171 'purpos':208 'rather':211 'refer':187 'represent':62 'request':79,100 'requir':93 'respons':112,200 'return':87,109 'rich':216 'rout':116 'scheme':76 'second':136 'send':1,16 'settlement':133 'simpl':205 'singl':207 'single-purpos':206 'site':170 'specif':163 'specifi':119 'technic':192 'tie':160 'timeout':130 'tip':5,20,157,179,209 'transact':107 'unit':58 'usdc':4,19,54,123 'usdc-tipping' 'use':69,122 'valid':82 'via':10,25 'wallet':43,164 'without':80 'x':84 'x-payment':83 'x402':11,26,33,71,156 'x402 tip' 'x402 tipping link' 'x402-enabled':32 'x402-payment' 'x402-poc.vercel.app':141","prices":[{"id":"c45a855f-c57e-4735-ac66-a9ef7c5c59ff","listingId":"66658ad8-2fef-41ed-8876-087274a901d2","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"1000000","chain":"base","payTo":"0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402-poc.vercel.app/api/0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87/coffee","description":"buy 0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87 a coffee. ","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"1000000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:30:44.824Z"}],"sources":[{"listingId":"66658ad8-2fef-41ed-8876-087274a901d2","source":"x402_bazaar","sourceId":"https://x402-poc.vercel.app/api/0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87/coffee","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:30:44.824Z","lastSeenAt":"2026-04-25T03:02:15.778Z"}],"details":{"listingId":"66658ad8-2fef-41ed-8876-087274a901d2","quickStartSnippet":"curl -X GET \\\n  https://x402-poc.vercel.app/api/0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87/coffee\n\n# Returns 402 with payment challenge. Include X-PAYMENT header with valid payment proof to complete.","exampleRequest":null,"exampleResponse":{"error":"X-PAYMENT header is required","accepts":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402-poc.vercel.app/api/0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87/coffee","description":"buy 0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87 a coffee.","maxAmountRequired":"1000000","maxTimeoutSeconds":300}],"x402Version":1},"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring X-PAYMENT header with exact scheme on Base network for 1,000,000 units of USDC","source_url":"https://x402-poc.vercel.app/api/0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87/coffee"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://x402-poc.vercel.app/api/0xD5FFeb6C070720D10f0E80e3C5A181Cc8DAaef87/coffee"},{"claim":"The landing page describes the app as a tool to create x402 tip links","source_url":"https://x402-poc.vercel.app"}],"useCases":["Tipping a specific Ethereum wallet address 1 USDC via an automated agent","Demonstrating x402 protocol payment flows in a proof-of-concept integration","Programmatically sending micro-payments on the Base network using USDC"],"bestFor":["Developers experimenting with the x402 payment protocol","Agents that need to make small USDC payments on Base","Simple one-shot tipping or donation use cases"],"notFor":["Variable-amount or subscription-based payment flows","Non-USDC or non-Base-network transactions","Production payment infrastructure requiring SLAs or documentation"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:24.259Z"},"updatedAt":"2026-04-25T03:02:15.778Z"}}