{"id":"0d3dc62a-af41-46ce-b122-d2867a24e11f","shortId":"ChxrCT","kind":"x402","title":"Mint a unique fully-onchain generative art NFT (Paths style) on Base for $1 USDC via x402.","tagline":"Mint a unique fully-onchain generative art NFT (Paths style) on Base for $1 USDC via x402.","description":"Xonin is a generative art NFT collection deployed on the Base network. Each piece features unique abstract designs of layered vivid curves and geometric shapes, drawn from 100 distinct color palettes. The artwork is created, rendered, and stored entirely onchain, ensuring immutability and permanence. This endpoint mints NFTs in the \"Paths\" art style.\n\nThe `/api/mint-paths` endpoint is an x402-enabled POST endpoint. An agent or user sends a POST request with the required X-PAYMENT header (paying 1 USDC on Base via the x402 exact-payment scheme). On success, the endpoint mints a new NFT, transfers it to the buyer's wallet, and returns the token ID, metadata URI, transaction hashes for both mint and transfer operations, and an OpenSea link to view the NFT. No request body fields are required beyond the x402 payment header.\n\nThe payment is 1,000,000 units of USDC (asset 0x8335…2913 on Base), which equals $1 USDC. The payee address is 0x531eE0dFf1cF637Aa9e9759c14dD2b95D775c26D. The maximum timeout for the payment challenge is 300 seconds. A companion endpoint for the \"Shapes\" art style also exists on the same origin but is not covered by this listing.","tags":[],"capabilities":["nft-minting","generative-art","onchain-storage","x402-payment","base-network","usdc-payment","erc721"],"categories":["nft","crypto","art"],"synonyms":["generative art NFT","onchain NFT mint","x402 NFT","Base NFT minting","abstract art NFT","USDC NFT purchase","paths art style","Xonin NFT"],"warnings":["No dedicated API documentation or OpenAPI spec is available — /docs returns 404.","The request body schema specifies no fields (bodyFields: {}), so it is unclear how the buyer's wallet address is determined; it may be derived from the x402 payment token.","Response example is inferred from the outputSchema, not from an actual captured response."],"endpointUrl":"https://xonin-x402.vercel.app/api/mint-paths","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x531eE0dFf1cF637Aa9e9759c14dD2b95D775c26D","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://xonin-x402.vercel.app/api/mint-paths","description":"Xonin - A generative art NFT collection featuring unique abstract designs of layered vivid curves and geometric shapes, crafted with 100 distinct color palettes. The artworks are created, rendered and stored fully onchain to ensure immutability and permanence. Employed art style: Paths. Website: https://xonin.vercel.app; X: https://x.com/XoninNFT.","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{},"discoverable":true},"output":{"type":"object","required":["success"],"properties":{"error":{"type":"string","description":"Error message if operation failed"},"success":{"type":"boolean","description":"Whether the NFT was successfully minted and transferred"},"tokenId":{"type":"string","description":"The ID of the minted NFT"},"tokenURI":{"type":"string","description":"The URI pointing to the NFT metadata"},"openSeaUrl":{"type":"string","description":"OpenSea URL to view NFT"},"userOpHash":{"type":"string","description":"User operation hash for debugging failed transactions"},"buyerAddress":{"type":"string","description":"Wallet address that received NFT"},"mintTransactionHash":{"type":"string","description":"Transaction hash of mint operation"},"transferTransactionHash":{"type":"string","description":"Transaction hash of transfer to buyer"},"withdrawTransactionHash":{"type":"string","description":"Transaction hash of ETH withdrawal from contract (for failed withdrawals)"},"ethTransferTransactionHash":{"type":"string","description":"Transaction hash of ETH transfer to smart account (for failed transfers)"}}}},"maxAmountRequired":"1000000","maxTimeoutSeconds":300}]},"qualityScore":"0.720","qualityRationale":"The x402 challenge is live and well-structured with a complete output schema. The endpoint description, pricing, and payment details are clear. However, there are no dedicated docs, no OpenAPI spec, and no example responses from the provider, so the output schema fields and response example are inferred from the challenge 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'000':180,181 '0x531ee0dff1cf637aa9e9759c14dd2b95d775c26d':198 '0x8335':186 '1':15,33,116,179,192 '100':64 '2913':187 '300':207 'Base NFT minting' 'USDC NFT purchase' 'Xonin NFT' 'abstract':53 'abstract art NFT' 'address':196 'agent':101 'also':217 'art':8,26,41,88,215 'artwork':69 'asset':185 'base':13,31,47,119,189 'base-network' 'beyond':171 'bodi':167 'buyer':139 'challeng':205 'collect':43 'color':66 'companion':210 'cover':226 'creat':71 'curv':58 'deploy':44 'design':54 'distinct':65 'drawn':62 'enabl':97 'endpoint':82,92,99,130,211 'ensur':77 'entir':75 'equal':191 'erc721' 'exact':124 'exact-pay':123 'exist':218 'featur':51 'field':168 'fulli':5,23 'fully-onchain':4,22 'generat':7,25,40 'generative art NFT' 'generative-art' 'geometr':60 'hash':150 'header':114,175 'id':146 'immut':78 'layer':56 'link':160 'list':229 'maximum':200 'metadata':147 'mint':1,19,83,131,153 'network':48 'new':133 'nft':9,27,42,134,164 'nft-minting' 'nfts':84 'onchain':6,24,76 'onchain NFT mint' 'onchain-storage' 'opensea':159 'oper':156 'origin':222 'palett':67 'path':10,28,87 'paths art style' 'pay':115 'paye':195 'payment':113,125,174,177,204 'perman':80 'piec':50 'post':98,106 'render':72 'request':107,166 'requir':110,170 'return':143 'scheme':126 'second':208 'send':104 'shape':61,214 'store':74 'style':11,29,89,216 'success':128 'timeout':201 'token':145 'transact':149 'transfer':135,155 'uniqu':3,21,52 'unit':182 'uri':148 'usdc':16,34,117,184,193 'usdc-payment' 'user':103 'via':17,35,120 'view':162 'vivid':57 'wallet':141 'x':112 'x-payment':111 'x402':18,36,96,122,173 'x402 NFT' 'x402-enabled':95 'x402-payment' 'xonin':37","prices":[{"id":"500ca2aa-f0a7-4c3d-aa04-b7e369b68f6b","listingId":"0d3dc62a-af41-46ce-b122-d2867a24e11f","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"1000000","chain":"base","payTo":"0x531eE0dFf1cF637Aa9e9759c14dD2b95D775c26D","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x531eE0dFf1cF637Aa9e9759c14dD2b95D775c26D","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://xonin-x402.vercel.app/api/mint-paths","description":"Xonin - A generative art NFT collection featuring unique abstract designs of layered vivid curves and geometric shapes, crafted with 100 distinct color palettes. The artworks are created, rendered and stored fully onchain to ensure immutability and permanence. Employed art style: Paths. Website: https://xonin.vercel.app; X: https://x.com/XoninNFT.","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{},"discoverable":true},"output":{"type":"object","required":["success"],"properties":{"error":{"type":"string","description":"Error message if operation failed"},"success":{"type":"boolean","description":"Whether the NFT was successfully minted and transferred"},"tokenId":{"type":"string","description":"The ID of the minted NFT"},"tokenURI":{"type":"string","description":"The URI pointing to the NFT metadata"},"openSeaUrl":{"type":"string","description":"OpenSea URL to view NFT"},"userOpHash":{"type":"string","description":"User operation hash for debugging failed transactions"},"buyerAddress":{"type":"string","description":"Wallet address that received NFT"},"mintTransactionHash":{"type":"string","description":"Transaction hash of mint operation"},"transferTransactionHash":{"type":"string","description":"Transaction hash of transfer to buyer"},"withdrawTransactionHash":{"type":"string","description":"Transaction hash of ETH withdrawal from contract (for failed withdrawals)"},"ethTransferTransactionHash":{"type":"string","description":"Transaction hash of ETH transfer to smart account (for failed transfers)"}}}},"maxAmountRequired":"1000000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:31:36.389Z"}],"sources":[{"listingId":"0d3dc62a-af41-46ce-b122-d2867a24e11f","source":"x402_bazaar","sourceId":"https://xonin-x402.vercel.app/api/mint-paths","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:36.389Z","lastSeenAt":"2026-04-23T02:00:16.833Z"}],"details":{"listingId":"0d3dc62a-af41-46ce-b122-d2867a24e11f","quickStartSnippet":"curl -X POST https://xonin-x402.vercel.app/api/mint-paths \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\"","exampleRequest":{},"exampleResponse":{"success":true,"tokenId":"42","tokenURI":"data:application/json;base64,...","openSeaUrl":"https://opensea.io/assets/base/0x.../42","buyerAddress":"0xAbC1234567890DEF1234567890abcdef12345678","mintTransactionHash":"0xabc123...def456","transferTransactionHash":"0x789abc...012def"},"schema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{},"discoverable":true},"output":{"type":"object","required":["success"],"properties":{"error":{"type":"string","description":"Error message if operation failed"},"success":{"type":"boolean","description":"Whether the NFT was successfully minted and transferred"},"tokenId":{"type":"string","description":"The ID of the minted NFT"},"tokenURI":{"type":"string","description":"The URI pointing to the NFT metadata"},"openSeaUrl":{"type":"string","description":"OpenSea URL to view NFT"},"userOpHash":{"type":"string","description":"User operation hash for debugging failed transactions"},"buyerAddress":{"type":"string","description":"Wallet address that received NFT"},"mintTransactionHash":{"type":"string","description":"Transaction hash of mint operation"},"transferTransactionHash":{"type":"string","description":"Transaction hash of transfer to buyer"},"withdrawTransactionHash":{"type":"string","description":"Transaction hash of ETH withdrawal from contract (for failed withdrawals)"},"ethTransferTransactionHash":{"type":"string","description":"Transaction hash of ETH transfer to smart account (for failed transfers)"}}}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with x402Version 1, accepting 1,000,000 units of USDC on Base.","source_url":"https://xonin-x402.vercel.app/api/mint-paths"},{"claim":"Artworks are created, rendered and stored fully onchain to ensure immutability and permanence.","source_url":"https://xonin-x402.vercel.app"},{"claim":"Payment of $1 USDC will be processed via x402 protocol.","source_url":"https://xonin-x402.vercel.app"},{"claim":"The collection features unique abstract designs of layered vivid curves and geometric shapes, crafted with 100 distinct color palettes.","source_url":"https://xonin-x402.vercel.app"},{"claim":"Two art styles are available: Shapes and Paths.","source_url":"https://xonin-x402.vercel.app"}],"useCases":["AI agents autonomously purchasing unique generative art NFTs","Programmatic minting of onchain art for digital collections","Integrating NFT minting into automated workflows via x402 micropayments","Gifting unique generative art pieces by specifying a recipient wallet"],"bestFor":["Agents or apps that need to mint NFTs programmatically with a simple HTTP call","Collectors seeking fully onchain generative art on Base","Developers building x402-powered commerce flows involving NFTs"],"notFor":["Minting NFTs on chains other than Base","Bulk or batch minting (endpoint mints one NFT per call)","Users who need free or gasless minting — this costs $1 USDC per mint"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:06.471Z"},"updatedAt":"2026-04-23T02:00:16.833Z"}}