{"id":"0febf46d-4ca7-401e-845a-25aaceed2f29","shortId":"9Fg6D2","kind":"x402","title":"Pay-per-file IPFS content retrieval via x402 on Base Sepolia testnet","tagline":"Pay-per-file IPFS content retrieval via x402 on Base Sepolia testnet","description":"This endpoint serves IPFS-pinned content behind an x402 paywall, hosted on a Pinata-based gateway (grapevine.dev-mypinata.cloud). When a GET request is made to the endpoint with a specific CID (Content Identifier), the server returns an HTTP 402 challenge requiring a micropayment of 0.002006 USDC on the Base Sepolia testnet before delivering the file. The response MIME type is application/octet-stream, indicating raw binary/file content.\n\nThe x402 challenge uses the \"exact\" payment scheme with a 60-second timeout. Payment is directed to address 0x6e62FF0591d4D8a0E5A1C274AbCFd2D716F1035E using the USDC token contract at 0x036CbD53842c5426634e7929541eC2318f3dCF7e on Base Sepolia. The endpoint follows x402 version 1 protocol and expects a valid x-payment header to authorize content access.\n\nNote that this endpoint operates on Base Sepolia, which is a testnet — meaning the USDC tokens used are not real-value tokens. The crawled site provides no documentation, no OpenAPI spec, and no additional context beyond the x402 challenge itself. The gateway appears to be a CID-based content delivery system where each CID path may have its own pricing. Without further documentation, the scope and catalog of available content behind this gateway is unknown.","tags":[],"capabilities":["ipfs-content-retrieval","x402-paywall","micropayment-gated","base-sepolia-testnet","usdc-payment","cid-based-routing","binary-file-delivery"],"categories":["storage","crypto-payments"],"synonyms":["IPFS gateway","Pinata gateway","pay-per-download","content-addressed storage","x402 file access","micropayment file retrieval","decentralized storage paywall"],"warnings":["No documentation or OpenAPI spec available from the provider","Operates on Base Sepolia testnet — USDC tokens have no real monetary value","The content behind this CID is unknown (application/octet-stream with no description of what the file contains)","All crawled pages returned error messages; the gateway provides no discoverability or catalog"],"endpointUrl":"https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x6e62FF0591d4D8a0E5A1C274AbCFd2D716F1035E","scheme":"exact","network":"base-sepolia","mimeType":"application/octet-stream","resource":"https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe","description":"0.002006 USDC on base-sepolia","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"2006","maxTimeoutSeconds":60}]},"qualityScore":"0.400","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint works. However, there is zero documentation, no OpenAPI spec, no site content beyond error messages, and the endpoint is on a testnet. All descriptive details are inferred solely from the 402 challenge 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'0x036cbd53842c5426634e7929541ec2318f3dcf7e':118 '0x6e62ff0591d4d8a0e5a1c274abcfd2d716f1035e':111 '1':127 '402':66 '60':103 'IPFS gateway' 'Pinata gateway' 'access':140 'addit':175 'address':110 'appear':184 'application/octet-stream':88 'author':138 'avail':211 'base':11,24,43,76,120,147,190 'base-sepolia-testnet' 'behind':34,213 'beyond':177 'binary-file-delivery' 'binary/file':91 'catalog':209 'challeng':67,95,180 'cid':58,189,196 'cid-bas':188 'cid-based-routing' 'content':6,19,33,59,92,139,191,212 'content-addressed storage' 'context':176 'contract':116 'crawl':165 'decentralized storage paywall' 'deliv':80 'deliveri':192 'direct':108 'document':169,205 'endpoint':28,54,123,144 'exact':98 'expect':130 'file':4,17,82 'follow':124 'gateway':44,183,215 'get':48 'grapevine.dev-mypinata.cloud':45 'header':136 'host':38 'http':65 'identifi':60 'indic':89 'ipf':5,18,31 'ipfs-content-retrieval' 'ipfs-pin':30 'made':51 'may':198 'mean':153 'micropay':70 'micropayment file retrieval' 'micropayment-gated' 'mime':85 'note':141 'openapi':171 'oper':145 'path':197 'pay':2,15 'pay-per-download' 'pay-per-fil':1,14 'payment':99,106,135 'paywal':37 'per':3,16 'pin':32 'pinata':42 'pinata-bas':41 'price':202 'protocol':128 'provid':167 'raw':90 'real':161 'real-valu':160 'request':49 'requir':68 'respons':84 'retriev':7,20 'return':63 'scheme':100 'scope':207 'second':104 'sepolia':12,25,77,121,148 'serv':29 'server':62 'site':166 'spec':172 'specif':57 'system':193 'testnet':13,26,78,152 'timeout':105 'token':115,156,163 'type':86 'unknown':217 'usdc':73,114,155 'usdc-payment' 'use':96,112,157 'valid':132 'valu':162 'version':126 'via':8,21 'without':203 'x':134 'x-payment':133 'x402':9,22,36,94,125,179 'x402 file access' 'x402-paywall'","prices":[{"id":"d84897a7-7959-4283-9d24-5dde9e9ff1d3","listingId":"0febf46d-4ca7-401e-845a-25aaceed2f29","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"2006","chain":"base-sepolia","payTo":"0x6e62FF0591d4D8a0E5A1C274AbCFd2D716F1035E","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/octet-stream","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x6e62FF0591d4D8a0E5A1C274AbCFd2D716F1035E","scheme":"exact","network":"base-sepolia","mimeType":"application/octet-stream","resource":"https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe","description":"0.002006 USDC on base-sepolia","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"2006","maxTimeoutSeconds":60}],"asset_contract":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","max_timeout_seconds":60},"createdAt":"2026-04-18T18:31:04.011Z"}],"sources":[{"listingId":"0febf46d-4ca7-401e-845a-25aaceed2f29","source":"x402_bazaar","sourceId":"https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:04.011Z","lastSeenAt":"2026-04-22T02:30:10.742Z"}],"details":{"listingId":"0febf46d-4ca7-401e-845a-25aaceed2f29","quickStartSnippet":"# 1. GET the endpoint to receive the x402 challenge\ncurl -i https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe\n# Returns 402 with x402 challenge JSON\n# 2. Construct an x-payment header per x402 spec and resend:\ncurl -H \"x-payment: <signed-payment-token>\" \\\n  https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe\n# Returns the file as application/octet-stream","exampleRequest":null,"exampleResponse":{"error":"Provide a valid x-payment header to access this content","accepts":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x6e62FF0591d4D8a0E5A1C274AbCFd2D716F1035E","scheme":"exact","network":"base-sepolia","mimeType":"application/octet-stream","resource":"https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe","description":"0.002006 USDC on base-sepolia","maxAmountRequired":"2006","maxTimeoutSeconds":60}],"x402Version":1},"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring 0.002006 USDC on Base Sepolia","source_url":"https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe"},{"claim":"Payment is directed to address 0x6e62FF0591d4D8a0E5A1C274AbCFd2D716F1035E using USDC contract 0x036CbD53842c5426634e7929541eC2318f3dCF7e","source_url":"https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe"},{"claim":"The response MIME type is application/octet-stream","source_url":"https://grapevine.dev-mypinata.cloud/x402/cid/bafkreid47pctc75gkd66hoxd7pj5iiyzy2n5gloonxpu2h4ct2lsahv3oe"},{"claim":"Root and all other crawled paths return error messages with no useful content","source_url":"https://grapevine.dev-mypinata.cloud"}],"useCases":["Retrieving IPFS-pinned files behind a micropayment gate","Testing x402 payment flows on Base Sepolia testnet","Paying for individual content items stored on IPFS","Agent-driven file purchases using USDC micropayments"],"bestFor":["Developers testing x402 protocol integrations on testnet","Agents that need to fetch paywalled IPFS content programmatically","Prototyping pay-per-file content delivery systems"],"notFor":["Production/mainnet file purchases (this is on Base Sepolia testnet)","Browsing or discovering available content (no catalog or listing endpoint)","Streaming or large-scale bulk downloads (no documented batch support)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:16.011Z"},"updatedAt":"2026-04-22T02:30:10.742Z"}}