{"id":"883a46dc-5ecc-4c91-a435-0a0ab3cf9f8d","shortId":"nGJaCB","kind":"x402","title":"Purchase 10 search/AI-chat credits on Gifu API for $1.00 USDC on Base via x402","tagline":"Purchase 10 search/AI-chat credits on Gifu API for $1.00 USDC on Base via x402","description":"Gifu is an API service that provides search and AI chat features, gated behind a credit-based system. This specific endpoint lets callers purchase a bundle of 10 credits by paying 1.00 USDC (on the Base network) through the x402 payment protocol. Credits are tied to a wallet address supplied in the POST body.\n\nThe x402 challenge confirms the endpoint is live and accepts an \"exact\" payment scheme. The caller sends a POST with a JSON body containing their `walletAddress` and an `X-PAYMENT` header carrying a Base64-encoded x402 payment proof. On success the response returns a boolean `success` flag, the updated `credits` balance, and a `package` object describing the purchased bundle (id, credits count, and price).\n\nDocumentation beyond the x402 challenge and the root health endpoint is unavailable — /docs, /api, /pricing, and /README all return 404. The service root confirms three routes: /health, /api/search, and /api/x402/pricing. No OpenAPI spec or additional usage guides were found, so details about the search and AI chat features that the credits unlock remain unspecified.","tags":[],"capabilities":["x402-payment","credit-purchase","usdc-base","search-credits","ai-chat-credits","wallet-address-binding"],"categories":["search","llm","payments"],"synonyms":["gifu","gifu api","search credits","ai chat credits","x402 credits","usdc credit purchase","base network credits","pay-per-search"],"warnings":["No documentation available — /docs, /pricing, /README all return 404","No OpenAPI or ai-plugin manifest found","Details about the search and AI chat features that credits unlock are unspecified","Service is hosted on Render free tier (onrender.com) which may have cold-start latency or availability limitations"],"endpointUrl":"https://gifu-server.onrender.com/api/x402/credits/purchase/10","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0xCD95802A4aBddD75A5750DD2d6935007eF268275","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://gifu-server.onrender.com/api/x402/credits/purchase/10","description":"Purchase 10 credits for unlimited searches and AI chat features","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"walletAddress":{"type":"string","required":true,"description":"User wallet address"}},"headerFields":{"x-payment":{"type":"string","required":false,"description":"Base64-encoded x402 payment proof"}}},"output":{"credits":{"type":"number"},"package":{"id":{"type":"string"},"price":{"type":"string"},"credits":{"type":"number"}},"success":{"type":"boolean"}}},"maxAmountRequired":"1000000","maxTimeoutSeconds":60}]},"qualityScore":"0.500","qualityRationale":"The x402 challenge is live and provides a clear outputSchema with input/output fields, pricing (1.00 USDC), and payment details. However, there is no OpenAPI spec, no documentation pages, and no information about what the purchased credits actually unlock beyond the brief description. Response schema is inferred from the challenge's 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'/api/search':177 '/api/x402/pricing':179 '/docs':162 '/health':176 '/pricing':164 '/readme':166 '1.00':9,23,61 '10':2,16,57 '404':169 'accept':93 'addit':184 'address':78 'ai':38,195 'ai chat credits' 'ai-chat-credits' 'api':7,21,32 'balanc':136 'base':12,26,46,65 'base network credits' 'base64':119 'base64-encoded':118 'behind':42 'beyond':151 'bodi':83,106 'boolean':130 'bundl':55,144 'caller':52,99 'carri':116 'challeng':86,154 'chat':39,196 'confirm':87,173 'contain':107 'count':147 'credit':4,18,45,58,72,135,146,200 'credit-bas':44 'credit-purchase' 'describ':141 'detail':190 'document':150 'encod':120 'endpoint':50,89,159 'exact':95 'featur':40,197 'flag':132 'found':188 'gate':41 'gifu':6,20,29 'gifu api' 'guid':186 'header':115 'health':158 'id':145 'json':105 'let':51 'live':91 'network':66 'object':140 'openapi':181 'packag':139 'pay':60 'pay-per-search' 'payment':70,96,114,122 'post':82,102 'price':149 'proof':123 'protocol':71 'provid':35 'purchas':1,15,53,143 'remain':202 'respons':127 'return':128,168 'root':157,172 'rout':175 'scheme':97 'search':36,193 'search credits' 'search-credits' 'search/ai-chat':3,17 'send':100 'servic':33,171 'spec':182 'specif':49 'success':125,131 'suppli':79 'system':47 'three':174 'tie':74 'unavail':161 'unlock':201 'unspecifi':203 'updat':134 'usag':185 'usdc':10,24,62 'usdc credit purchase' 'usdc-base' 'via':13,27 'wallet':77 'wallet-address-binding' 'walletaddress':109 'x':113 'x-payment':112 'x402':14,28,69,85,121,153 'x402 credits' 'x402-payment'","prices":[{"id":"00fe26bc-0601-4e2e-87f6-1d9ac3541f44","listingId":"883a46dc-5ecc-4c91-a435-0a0ab3cf9f8d","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"1000000","chain":"base","payTo":"0xCD95802A4aBddD75A5750DD2d6935007eF268275","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0xCD95802A4aBddD75A5750DD2d6935007eF268275","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://gifu-server.onrender.com/api/x402/credits/purchase/10","description":"Purchase 10 credits for unlimited searches and AI chat features","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"walletAddress":{"type":"string","required":true,"description":"User wallet address"}},"headerFields":{"x-payment":{"type":"string","required":false,"description":"Base64-encoded x402 payment proof"}}},"output":{"credits":{"type":"number"},"package":{"id":{"type":"string"},"price":{"type":"string"},"credits":{"type":"number"}},"success":{"type":"boolean"}}},"maxAmountRequired":"1000000","maxTimeoutSeconds":60}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":60},"createdAt":"2026-04-21T18:32:33.145Z"}],"sources":[{"listingId":"883a46dc-5ecc-4c91-a435-0a0ab3cf9f8d","source":"x402_bazaar","sourceId":"https://gifu-server.onrender.com/api/x402/credits/purchase/10","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:33.145Z","lastSeenAt":"2026-04-22T04:02:47.740Z"}],"details":{"listingId":"883a46dc-5ecc-4c91-a435-0a0ab3cf9f8d","quickStartSnippet":"curl -X POST https://gifu-server.onrender.com/api/x402/credits/purchase/10 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <base64-encoded-x402-proof>\" \\\n  -d '{\"walletAddress\": \"0xYourWalletAddress\"}'","exampleRequest":{"walletAddress":"0xAbC1234567890DEF1234567890abcdef12345678"},"exampleResponse":{"credits":10,"package":{"id":"pkg_10_credits","price":"1.00","credits":10},"success":true},"schema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"walletAddress":{"type":"string","required":true,"description":"User wallet address"}},"headerFields":{"x-payment":{"type":"string","required":false,"description":"Base64-encoded x402 payment proof"}}},"output":{"credits":{"type":"number"},"package":{"id":{"type":"string"},"price":{"type":"string"},"credits":{"type":"number"}},"success":{"type":"boolean"}}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 1000000 (1.00 USDC) on Base network","source_url":"https://gifu-server.onrender.com/api/x402/credits/purchase/10"},{"claim":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://gifu-server.onrender.com/api/x402/credits/purchase/10"},{"claim":"The service root confirms endpoints: /health, /api/search, /api/x402/pricing","source_url":"https://gifu-server.onrender.com"}],"useCases":["Purchasing credits to unlock search queries on the Gifu API","Buying AI chat feature access in bulk via a single micropayment","Programmatic credit top-up for an agent that needs search or chat capabilities"],"bestFor":["Agents that need on-demand search and AI chat access paid per-bundle","Developers integrating x402 micropayments for credit-gated services","Wallet-based applications on the Base network looking for search/chat APIs"],"notFor":["Users who need free or ad-supported search","Applications requiring fiat-only payment rails with no crypto wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:12:47.111Z"},"updatedAt":"2026-04-22T04:02:47.740Z"}}