{"id":"7ff6477e-a757-4339-9aa5-902d0aad02b9","shortId":"e4Xa3c","kind":"x402","title":"Swap USDC for PRB (prettybitch) tokens on Base via a single x402-authenticated POST request.","tagline":"Swap USDC for PRB (prettybitch) tokens on Base via a single x402-authenticated POST request.","description":"This x402 endpoint lets callers purchase PRB (prettybitch) tokens by spending USDC on the Base network. The caller sends a POST request with an optional `amount` field (in USDC, e.g. \"10\" or \"0.5\"); if omitted, the default spend is 5 USDC. The endpoint handles the swap on-chain and returns the swap transaction hash, the send transaction hash, the number of tokens received, and the USDC amount paid.\n\nThe PRB token contract is 0xb02ec227Ba060Ee60E205c8a626F2330DD4a5B07, created via Clanker. Payment is made through the x402 protocol using USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, with a maximum payment of 5 USDC per call. The endpoint is hosted on x420.dev, a platform that appears to provide x402-enabled token interaction pages. According to the landing page stats, the endpoint has processed 49 total transactions across 19 unique users, with an average latency of 2.68 seconds and an 89% success rate.\n\nNo formal API documentation exists beyond the x402 challenge schema. The /docs, /api, /pricing, and /README paths all return placeholder pages. All behavioral details are inferred from the x402 outputSchema and the landing page.","tags":[],"capabilities":["token-swap","usdc-to-prb","base-network","x402-payment","on-chain-transaction","custom-amount"],"categories":["crypto","defi"],"synonyms":["PRB token","prettybitch token","USDC swap","Base token purchase","Clanker token","x420 puff","token buy endpoint","PRB swap"],"warnings":["No formal API documentation exists — /docs, /api, /pricing, /README all return placeholder pages","Response example is inferred from outputSchema, not from an actual observed response","maxAmountRequired is 5 USDC, which may limit per-transaction spend","89% success rate reported on landing page suggests roughly 1 in 10 transactions may fail","PRB is a meme/community token created via Clanker — exercise caution regarding liquidity and value"],"endpointUrl":"https://prb.x420.dev/api/puff-custom","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://prb.x420.dev/api/puff-custom","description":"Buy custom USDC amount worth of PRB tokens 0xb02ec227Ba060Ee60E205c8a626F2330DD4a5B07","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"amount":{"type":"string","required":false,"description":"Optional amount in USDC (e.g., '10', '10.5', '0.5'). Defaults to 5 if not provided."}}},"output":{"message":"string","tokensReceived":"string","usdcAmountPaid":"string","sendTransactionHash":"string | null","swapTransactionHash":"string | null"}},"maxAmountRequired":"5000000","maxTimeoutSeconds":120}]},"qualityScore":"0.520","qualityRationale":"The x402 challenge is live and includes a well-structured outputSchema with input/output definitions. However, there is no formal API documentation, no OpenAPI spec, no pricing page, and the response example is inferred from the schema rather than observed. Landing page stats provide some operational context but are 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'/docs':190 '/pricing':192 '/readme':194 '0.5':65 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':120 '0xb02ec227ba060ee60e205c8a626f2330dd4a5b07':107 '10':63 '19':164 '2.68':172 '49':160 '5':72,128 '89':176 'Base token purchase' 'Clanker token' 'PRB swap' 'PRB token' 'USDC swap' 'accord':150 'across':163 'amount':58,100 'api':181 'appear':141 'authent':14,30 'averag':169 'base':8,24,47,122 'base-network' 'behavior':201 'beyond':184 'call':131 'caller':37,50 'chain':81 'challeng':187 'clanker':110 'contract':105 'creat':108 'custom-amount' 'default':69 'detail':202 'document':182 'e.g':62 'enabl':146 'endpoint':35,75,133,157 'exist':183 'field':59 'formal':180 'handl':76 'hash':87,91 'host':135 'infer':204 'interact':148 'land':153,211 'latenc':170 'let':36 'made':113 'maximum':125 'network':48 'number':93 'omit':67 'on-chain':79 'on-chain-transaction' 'option':57 'outputschema':208 'page':149,154,199,212 'paid':101 'path':195 'payment':111,126 'per':130 'placehold':198 'platform':139 'post':15,31,53 'prb':4,20,39,103 'prettybitch':5,21,40 'prettybitch token' 'process':159 'protocol':117 'provid':143 'purchas':38 'rate':178 'receiv':96 'request':16,32,54 'return':83,197 'schema':188 'second':173 'send':51,89 'singl':11,27 'spend':43,70 'stat':155 'success':177 'swap':1,17,78,85 'token':6,22,41,95,104,147 'token buy endpoint' 'token-swap' 'total':161 'transact':86,90,162 'uniqu':165 'usdc':2,18,44,61,73,99,119,129 'usdc-to-prb' 'use':118 'user':166 'via':9,25,109 'x402':13,29,34,116,145,186,207 'x402-authenticated':12,28 'x402-enabled':144 'x402-payment' 'x420 puff' 'x420.dev':137","prices":[{"id":"5a118c3d-58ba-472a-bcd6-72150d47dc95","listingId":"7ff6477e-a757-4339-9aa5-902d0aad02b9","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"5000000","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://prb.x420.dev/api/puff-custom","description":"Buy custom USDC amount worth of PRB tokens 0xb02ec227Ba060Ee60E205c8a626F2330DD4a5B07","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"amount":{"type":"string","required":false,"description":"Optional amount in USDC (e.g., '10', '10.5', '0.5'). Defaults to 5 if not provided."}}},"output":{"message":"string","tokensReceived":"string","usdcAmountPaid":"string","sendTransactionHash":"string | null","swapTransactionHash":"string | null"}},"maxAmountRequired":"5000000","maxTimeoutSeconds":120}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":120},"createdAt":"2026-04-18T18:31:09.416Z"}],"sources":[{"listingId":"7ff6477e-a757-4339-9aa5-902d0aad02b9","source":"x402_bazaar","sourceId":"https://prb.x420.dev/api/puff-custom","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:09.416Z","lastSeenAt":"2026-04-23T02:00:15.183Z"}],"details":{"listingId":"7ff6477e-a757-4339-9aa5-902d0aad02b9","quickStartSnippet":"curl -X POST https://prb.x420.dev/api/puff-custom \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{\"amount\": \"2.5\"}'","exampleRequest":{"amount":"2.5"},"exampleResponse":{"message":"Successfully swapped USDC for PRB tokens","tokensReceived":"125000.0","usdcAmountPaid":"2.5","sendTransactionHash":"0x789abc...012def","swapTransactionHash":"0xabc123...def456"},"schema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"amount":{"type":"string","required":false,"description":"Optional amount in USDC (e.g., '10', '10.5', '0.5'). Defaults to 5 if not provided."}}},"output":{"message":"string","tokensReceived":"string","usdcAmountPaid":"string","sendTransactionHash":"string | null","swapTransactionHash":"string | null"}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns status 402 with maxAmountRequired of 5,000,000 (5 USDC) on Base network","source_url":"https://prb.x420.dev/api/puff-custom"},{"claim":"PRB token contract is 0xb02ec227Ba060Ee60E205c8a626F2330DD4a5B07, created via Clanker","source_url":"https://prb.x420.dev"},{"claim":"49 total transactions, 19 unique users, 2.68s average latency, 89% success rate","source_url":"https://prb.x420.dev"},{"claim":"Payment asset is USDC at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://prb.x420.dev/api/puff-custom"},{"claim":"Amount field defaults to 5 USDC if not provided","source_url":"https://prb.x420.dev/api/puff-custom"}],"useCases":["Programmatically buy PRB tokens with USDC via an AI agent or automated workflow","Integrate PRB token purchases into a trading bot on Base","Allow users to acquire PRB tokens without directly interacting with a DEX"],"bestFor":["Agents or bots that need to acquire PRB tokens programmatically","Developers building x402-native payment flows on Base","Automated portfolio or meme-token accumulation strategies"],"notFor":["Swapping arbitrary token pairs — this endpoint only sells PRB","Large purchases exceeding 5 USDC per transaction (maxAmountRequired is 5 USDC)","Users who need detailed API documentation or SLA guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:14.512Z"},"updatedAt":"2026-04-23T02:00:15.183Z"}}