{"id":"4741e3ae-380a-4064-b15e-59fe240ef648","shortId":"f6x5vd","kind":"x402","title":"Pay 1 USDC on Base to receive 5,000 $PAY tokens and a generated \"Payment Moment\" poster.","tagline":"Pay 1 USDC on Base to receive 5,000 $PAY tokens and a generated \"Payment Moment\" poster.","description":"This x402-enabled endpoint on Vercel accepts a 1 USDC payment on the Base network and returns 5,000 $PAY tokens along with a personalized \"Payment Moment\" poster. The endpoint follows the x402 protocol (version 1) using the \"exact\" payment scheme, requiring an X-PAYMENT header with a valid payment proof.\n\nThe payment is sent to address 0x76f15a092C7ddAC99b2276E9289F061fa1244C45 using the USDC contract on Base (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required is 1,000,000 units (1 USDC at 6 decimals), with a timeout of 300 seconds. The response MIME type is application/json.\n\nDocumentation is essentially nonexistent — the landing page shows only a \"Connect wallet\" prompt, and all common documentation paths (/docs, /api, /pricing, /README) return 404. The exact structure of the JSON response (the poster payload and $PAY token details) is not documented anywhere in the crawled material, so the output format must be discovered empirically.","tags":[],"capabilities":["x402-payment","usdc-payment","base-network","token-distribution","poster-generation","exact-scheme"],"categories":["crypto","payments","generative"],"synonyms":["x402 pay","payment moment","PAY token airdrop","USDC poster","Base USDC endpoint","payment poster generator","x402 USDC"],"warnings":["No documentation available — /docs, /api, /pricing, /README all return 404","Response schema and poster format are completely undocumented","$PAY token contract address and distribution mechanism are not specified anywhere in crawled material","Landing page shows only 'Connect wallet' with no further information"],"endpointUrl":"https://x402-pay.vercel.app/","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x76f15a092C7ddAC99b2276E9289F061fa1244C45","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402-pay.vercel.app/","description":"Pay 1 USDC → Get 5,000 $PAY → Your “Payment Moment” Poster.","outputSchema":{"input":{"type":"http","method":"POST","discoverable":true}},"maxAmountRequired":"1000000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming it is operational. However, there is no documentation, no OpenAPI schema, no response examples, and no information about the $PAY token or poster format. Nearly all details beyond the payment challenge itself must be inferred from the single-line 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'/docs':146 '/pricing':148 '/readme':149 '000':9,26,54,108,109 '0x76f15a092c7ddac99b2276e9289f061fa1244c45':94 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':101 '1':2,19,44,71,107,111 '300':120 '404':151 '5':8,25,53 '6':114 'Base USDC endpoint' 'PAY token airdrop' 'USDC poster' 'accept':42 'address':93 'along':57 'amount':104 'anywher':169 'application/json':127 'base':5,22,49,100 'base-network' 'common':143 'connect':138 'contract':98 'crawl':172 'decim':115 'detail':165 'discov':180 'document':128,144,168 'empir':181 'enabl':38 'endpoint':39,65 'essenti':130 'exact':74,153 'exact-scheme' 'follow':66 'format':177 'generat':14,31 'header':82 'json':157 'land':133 'materi':173 'maximum':103 'mime':124 'moment':16,33,62 'must':178 'network':50 'nonexist':131 'output':176 'page':134 'path':145 'pay':1,10,18,27,55,163 'payload':161 'payment':15,32,46,61,75,81,86,89 'payment moment' 'payment poster generator' 'person':60 'poster':17,34,63,160 'poster-generation' 'prompt':140 'proof':87 'protocol':69 'receiv':7,24 'requir':77,105 'respons':123,158 'return':52,150 'scheme':76 'second':121 'sent':91 'show':135 'structur':154 'timeout':118 'token':11,28,56,164 'token-distribution' 'type':125 'unit':110 'usdc':3,20,45,97,112 'usdc-payment' 'use':72,95 'valid':85 'vercel':41 'version':70 'wallet':139 'x':80 'x-payment':79 'x402':37,68 'x402 USDC' 'x402 pay' 'x402-enabled':36 'x402-payment'","prices":[{"id":"ccefe938-d68e-44b2-a278-55cb6d85d379","listingId":"4741e3ae-380a-4064-b15e-59fe240ef648","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"1000000","chain":"base","payTo":"0x76f15a092C7ddAC99b2276E9289F061fa1244C45","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x76f15a092C7ddAC99b2276E9289F061fa1244C45","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402-pay.vercel.app/","description":"Pay 1 USDC → Get 5,000 $PAY → Your “Payment Moment” Poster.","outputSchema":{"input":{"type":"http","method":"POST","discoverable":true}},"maxAmountRequired":"1000000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:31:37.602Z"}],"sources":[{"listingId":"4741e3ae-380a-4064-b15e-59fe240ef648","source":"x402_bazaar","sourceId":"https://x402-pay.vercel.app/","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:37.602Z","lastSeenAt":"2026-04-24T22:31:47.995Z"}],"details":{"listingId":"4741e3ae-380a-4064-b15e-59fe240ef648","quickStartSnippet":"curl -X POST https://x402-pay.vercel.app/ \\\n  -H \"X-PAYMENT: <your-x402-payment-proof>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"POST","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a 402 challenge with x402 version 1, exact scheme, on Base network requiring 1 USDC","source_url":"https://x402-pay.vercel.app/"},{"claim":"Payment is sent to 0x76f15a092C7ddAC99b2276E9289F061fa1244C45 using USDC asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://x402-pay.vercel.app/"},{"claim":"maxAmountRequired is 1000000 (1 USDC) with maxTimeoutSeconds of 300","source_url":"https://x402-pay.vercel.app/"},{"claim":"Description states: Pay 1 USDC → Get 5,000 $PAY → Your Payment Moment Poster","source_url":"https://x402-pay.vercel.app/"}],"useCases":["Paying 1 USDC to receive 5,000 $PAY tokens on Base","Generating a personalized \"Payment Moment\" poster as proof of payment","Demonstrating x402 protocol payment flows in agent-to-agent commerce"],"bestFor":["Developers experimenting with x402 payment protocol on Base","Agents that need to acquire $PAY tokens programmatically","Showcasing pay-per-call API patterns with crypto payments"],"notFor":["Users needing detailed API documentation or guaranteed SLAs","High-volume or production-grade token distribution workflows","Anyone without USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:06.249Z"},"updatedAt":"2026-04-24T22:31:47.995Z"}}