{"id":"1bf76b6b-9afd-4dbd-b3bc-9008513884c5","shortId":"xDBENE","kind":"x402","title":"Pay 1 USDC via x402 to swap for FROGS tokens on Base, returned to your wallet.","tagline":"Pay 1 USDC via x402 to swap for FROGS tokens on Base, returned to your wallet.","description":"This x402 endpoint lets an agent or user spend 1 USDC to purchase FROGS tokens (contract 0xbdB03E709EC61316D5Df8D7a6BBF203572E6cB07) on the Base network. The endpoint is hosted on x420.dev, a platform that appears to create x402-enabled subdomains for Clanker-launched tokens. Upon payment, the service executes a swap from USDC to FROGS and sends the resulting tokens to the caller, returning a JSON response with the swap transaction hash, send transaction hash, tokens received, and USDC amount paid.\n\nThe payment is handled via the x402 protocol: a GET request without an X-PAYMENT header returns a 402 challenge specifying the exact USDC amount (1 USDC, encoded as 1000000 in 6-decimal units) and the payTo address. The asset used for payment is USDC on Base (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum timeout for the transaction is 120 seconds.\n\nDocumentation is minimal — the /docs, /api, /pricing, and /README paths all return placeholder pages. The landing page shows basic x402 stats (1 total transaction, 1 unique user, 100% success rate, ~1.3s average latency, 84% trust score). The token was created via Clanker and can be viewed on clanker.world and x402scan.com.","tags":[],"capabilities":["token-swap","usdc-payment","base-network","x402-protocol","erc20-purchase","on-chain-transaction"],"categories":["crypto","defi"],"synonyms":["FROGS token","token swap","buy meme coin","x402 token purchase","USDC swap","Base token buy","Clanker token","x420 puff"],"warnings":["No documentation available — /docs, /api, /pricing, /README all return placeholder pages","Extremely low usage: only 1 total transaction and 1 unique user recorded","Fixed 1 USDC payment amount with no apparent way to customize swap size","FROGS is a Clanker-launched meme token — high financial risk, no guarantees of liquidity or value","Response example is inferred from outputSchema, not from an actual observed response"],"endpointUrl":"https://frogs.x420.dev/api/puff","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x93109d14F6665a9c9675290D3cD5A6c07bBAfdbd","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://frogs.x420.dev/api/puff","description":"Buy 1 USDC worth of FROGS tokens 0xbdB03E709EC61316D5Df8D7a6BBF203572E6cB07","outputSchema":{"input":{"type":"http","method":"GET"},"output":{"message":"string","tokensReceived":"string","usdcAmountPaid":"string","sendTransactionHash":"string | null","swapTransactionHash":"string | null"}},"maxAmountRequired":"1000000","maxTimeoutSeconds":120}]},"qualityScore":"0.450","qualityRationale":"The x402 challenge is live and well-formed with a clear outputSchema, but there is no documentation, no OpenAPI spec, no usage examples, and the endpoint has only 1 recorded transaction. The response schema is inferred from the outputSchema in the 402 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'/docs':174 '/pricing':176 '/readme':178 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':160 '0xbdb03e709ec61316d5df8d7a6bbf203572e6cb07':49 '1':2,18,42,138,191,194 '1.3':200 '100':197 '1000000':142 '120':168 '402':131 '6':144 '84':204 'Base token buy' 'Clanker token' 'FROGS token' 'USDC swap' 'address':150 'agent':38 'amount':110,137 'appear':63 'asset':152 'averag':202 'base':12,28,52,159 'base-network' 'basic':188 'buy meme coin' 'caller':93 'challeng':132 'clanker':72,212 'clanker-launch':71 'clanker.world':218 'contract':48 'creat':65,210 'decim':145 'document':170 'enabl':68 'encod':140 'endpoint':35,55 'erc20-purchase' 'exact':135 'execut':79 'frog':9,25,46,85 'get':121 'handl':115 'hash':102,105 'header':128 'host':57 'json':96 'land':185 'latenc':203 'launch':73 'let':36 'maximum':162 'minim':172 'network':53 'on-chain-transaction' 'page':183,186 'paid':111 'path':179 'pay':1,17 'payment':76,113,127,155 'payto':149 'placehold':182 'platform':61 'protocol':119 'purchas':45 'rate':199 'receiv':107 'request':122 'respons':97 'result':89 'return':13,29,94,129,181 'score':206 'second':169 'send':87,103 'servic':78 'show':187 'specifi':133 'spend':41 'stat':190 'subdomain':69 'success':198 'swap':7,23,81,100 'timeout':163 'token':10,26,47,74,90,106,208 'token swap' 'token-swap' 'total':192 'transact':101,104,166,193 'trust':205 'uniqu':195 'unit':146 'upon':75 'usdc':3,19,43,83,109,136,139,157 'usdc-payment' 'use':153 'user':40,196 'via':4,20,116,211 'view':216 'wallet':16,32 'without':123 'x':126 'x-payment':125 'x402':5,21,34,67,118,189 'x402 token purchase' 'x402-enabled':66 'x402-protocol' 'x402scan.com':220 'x420 puff' 'x420.dev':59","prices":[{"id":"c8c820db-8a5d-403e-94ae-3f605a00281c","listingId":"1bf76b6b-9afd-4dbd-b3bc-9008513884c5","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"1000000","chain":"base","payTo":"0x93109d14F6665a9c9675290D3cD5A6c07bBAfdbd","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x93109d14F6665a9c9675290D3cD5A6c07bBAfdbd","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://frogs.x420.dev/api/puff","description":"Buy 1 USDC worth of FROGS tokens 0xbdB03E709EC61316D5Df8D7a6BBF203572E6cB07","outputSchema":{"input":{"type":"http","method":"GET"},"output":{"message":"string","tokensReceived":"string","usdcAmountPaid":"string","sendTransactionHash":"string | null","swapTransactionHash":"string | null"}},"maxAmountRequired":"1000000","maxTimeoutSeconds":120}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":120},"createdAt":"2026-04-18T18:30:47.819Z"}],"sources":[{"listingId":"1bf76b6b-9afd-4dbd-b3bc-9008513884c5","source":"x402_bazaar","sourceId":"https://frogs.x420.dev/api/puff","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:30:47.819Z","lastSeenAt":"2026-04-23T03:47:38.525Z"}],"details":{"listingId":"1bf76b6b-9afd-4dbd-b3bc-9008513884c5","quickStartSnippet":"curl -X GET https://frogs.x420.dev/api/puff \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":{"message":"Successfully swapped USDC for FROGS","tokensReceived":"1000000000000000000","usdcAmountPaid":"1000000","sendTransactionHash":"0x789abc...012def","swapTransactionHash":"0xabc123...def456"},"schema":{"input":{"type":"http","method":"GET"},"output":{"message":"string","tokensReceived":"string","usdcAmountPaid":"string","sendTransactionHash":"string | null","swapTransactionHash":"string | null"}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring 1,000,000 units (1 USDC) payment on Base","source_url":"https://frogs.x420.dev/api/puff"},{"claim":"The FROGS token contract is 0xbdB03E709EC61316D5Df8D7a6BBF203572E6cB07 and was created via Clanker","source_url":"https://frogs.x420.dev"},{"claim":"x402 stats show 1 total transaction, 1 unique user, 100% success rate, 1.30s avg latency, 84% trust score","source_url":"https://frogs.x420.dev"},{"claim":"The payTo address is 0x93109d14F6665a9c9675290D3cD5A6c07bBAfdbd and the USDC asset is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://frogs.x420.dev/api/puff"}],"useCases":["Programmatically purchasing FROGS tokens with USDC via an AI agent","Automating small token swaps on Base without a DEX frontend","Demonstrating x402 payment protocol for on-chain token purchases"],"bestFor":["Agents that need to acquire specific tokens on Base via a simple HTTP call","Developers experimenting with the x402 payment protocol","Users wanting a one-step USDC-to-FROGS swap without a wallet UI"],"notFor":["Large-volume or variable-amount token trading (fixed 1 USDC amount)","Purchasing tokens on networks other than Base","Users seeking detailed documentation or API flexibility"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:22.29Z"},"updatedAt":"2026-04-23T03:47:38.525Z"}}