{"id":"d0d8fefd-77e1-4541-a7b2-1fa884d53775","shortId":"KN7hkc","kind":"x402","title":"Generate a unique AI trivia question via Claude Sonnet 4.5 for 1.25 USDC on Base.","tagline":"Generate a unique AI trivia question via Claude Sonnet 4.5 for 1.25 USDC on Base.","description":"This x402 endpoint generates a unique multiple-choice trivia question powered by Claude Sonnet 4.5. Each call costs 1.25 USDC (paid via the x402 protocol on Base), of which $1.00 goes to a POIC token LP pool and $0.25 covers gas and AI generation fees. The endpoint is part of the \"Proof of Intelligence Mint\" project, a gamified token-minting system where correct trivia answers earn 5000 POIC tokens.\n\nThe endpoint accepts a simple HTTP GET request with an x402 payment header. It returns a JSON object containing a trivia question with four multiple-choice options, the correct answer, an optional category and difficulty level, and a timestamp. The output schema is fully specified in the x402 challenge. There are no additional query parameters or request body fields documented.\n\nThe broader project tracks progress toward 100,000 mints, after which a Uniswap V4 liquidity pool is intended to auto-launch. As of the crawl, 225 of 100,000 mints have been completed. The POIC token contract is deployed on Base at 0xDCf65ACaf5BC4baDA3D3bb38834358dD6a8bA389. Payment is sent to 0x32d831cd322EB5DF497A1A640175a874b5372BF8 in USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base.","tags":[],"capabilities":["trivia-question-generation","claude-sonnet-4-5","x402-payment","base-network","usdc-payment","multiple-choice","ai-generated-content","token-minting-game"],"categories":["llm","gaming","crypto"],"synonyms":["AI trivia","trivia API","quiz question generator","Claude trivia","proof of intelligence","POIC token","x402 trivia","AI quiz endpoint","paid trivia API"],"warnings":["No formal API documentation or OpenAPI spec available","No input parameters documented — unclear if category/difficulty can be specified","The POIC token and LP pool are early-stage (225/100,000 mints); project viability is unproven","Example response is synthesized from the output schema, not from an actual API response"],"endpointUrl":"https://proof-of-intelligence-mint-web.vercel.app/api/x402/question","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x32d831cd322EB5DF497A1A640175a874b5372BF8","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://proof-of-intelligence-mint-web.vercel.app/api/x402/question","description":"Generate AI-powered trivia question using Claude Sonnet 4.5. Payment goes to LP pool.","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true},"output":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["id","question","options","correctAnswer","timestamp"],"properties":{"id":{"type":"string"},"options":{"type":"array","items":{"type":"string"}},"category":{"type":"string"},"question":{"type":"string"},"timestamp":{"type":"number"},"difficulty":{"type":"string"},"correctAnswer":{"type":"string"}},"additionalProperties":false}},"maxAmountRequired":"1250000","maxTimeoutSeconds":300}]},"qualityScore":"0.720","qualityRationale":"The x402 challenge is live and includes a complete output schema with required fields. The landing page provides clear pricing and project context. However, there are no formal API docs, no OpenAPI spec, and no documented input parameters beyond the bare GET request. The example response is inferred from the output schema rather than captured from a real 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'000':170,192 '0x32d831cd322eb5df497a1a640175a874b5372bf8':211 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':214 '0xdcf65acaf5bc4bada3d3bb38834358dd6a8ba389':206 '1.00':61 '1.25':12,27,50 '100':169,191 '225':189 '4.5':10,25,46 '5000':99 'AI quiz endpoint' 'AI trivia' 'Claude trivia' 'POIC token' 'accept':104 'addit':155 'ai':4,19,74 'ai-generated-content' 'answer':97,132 'auto':183 'auto-launch':182 'base':15,30,58,204,216 'base-network' 'bodi':160 'broader':164 'call':48 'categori':135 'challeng':151 'choic':39,128 'claud':8,23,44 'claude-sonnet-4-5' 'complet':196 'contain':120 'contract':200 'correct':95,131 'cost':49 'cover':71 'crawl':188 'deploy':202 'difficulti':137 'document':162 'earn':98 'endpoint':33,78,103 'fee':76 'field':161 'four':125 'fulli':146 'gamifi':89 'gas':72 'generat':1,16,34,75 'get':108 'goe':62 'header':114 'http':107 'intellig':85 'intend':180 'json':118 'launch':184 'level':138 'liquid':177 'lp':67 'mint':86,92,171,193 'multipl':38,127 'multiple-choic':37,126 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Payment goes to LP pool.","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true},"output":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["id","question","options","correctAnswer","timestamp"],"properties":{"id":{"type":"string"},"options":{"type":"array","items":{"type":"string"}},"category":{"type":"string"},"question":{"type":"string"},"timestamp":{"type":"number"},"difficulty":{"type":"string"},"correctAnswer":{"type":"string"}},"additionalProperties":false}},"maxAmountRequired":"1250000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:31:26.891Z"}],"sources":[{"listingId":"d0d8fefd-77e1-4541-a7b2-1fa884d53775","source":"x402_bazaar","sourceId":"https://proof-of-intelligence-mint-web.vercel.app/api/x402/question","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:26.891Z","lastSeenAt":"2026-04-24T08:30:55.443Z"}],"details":{"listingId":"d0d8fefd-77e1-4541-a7b2-1fa884d53775","quickStartSnippet":"# Requires x402 payment header with 1.25 USDC on Base\ncurl -X GET \\\n  https://proof-of-intelligence-mint-web.vercel.app/api/x402/question \\\n  -H 'X-PAYMENT: <x402-payment-token>'","exampleRequest":null,"exampleResponse":{"id":"abc123-def456","options":["Saturn","Jupiter","Neptune","Uranus"],"category":"Science","question":"What is the largest planet in our solar system?","timestamp":1719500000000,"difficulty":"Easy","correctAnswer":"Jupiter"},"schema":{"input":{"type":"http","method":"GET","discoverable":true},"output":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["id","question","options","correctAnswer","timestamp"],"properties":{"id":{"type":"string"},"options":{"type":"array","items":{"type":"string"}},"category":{"type":"string"},"question":{"type":"string"},"timestamp":{"type":"number"},"difficulty":{"type":"string"},"correctAnswer":{"type":"string"}},"additionalProperties":false}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Each question costs 1.25 USDC: $1.00 builds the LP pool, $0.25 covers gas and AI generation fees","source_url":"https://proof-of-intelligence-mint-web.vercel.app"},{"claim":"Questions are generated by Claude Sonnet 4.5","source_url":"https://proof-of-intelligence-mint-web.vercel.app"},{"claim":"Correct answers mint 5000 POIC tokens; after 100k mints the LP pool auto-launches on Uniswap V4","source_url":"https://proof-of-intelligence-mint-web.vercel.app"},{"claim":"225 of 100,000 mints completed at time of crawl","source_url":"https://proof-of-intelligence-mint-web.vercel.app"},{"claim":"POIC token contract at 0xDCf65ACaf5BC4baDA3D3bb38834358dD6a8bA389 on Base","source_url":"https://proof-of-intelligence-mint-web.vercel.app"},{"claim":"Payment address 0x32d831cd322EB5DF497A1A640175a874b5372BF8, USDC asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, maxAmountRequired 1250000","source_url":"https://proof-of-intelligence-mint-web.vercel.app/api/x402/question"},{"claim":"x402 challenge returned HTTP 402 with version 1 and method GET","source_url":"https://proof-of-intelligence-mint-web.vercel.app/api/x402/question"}],"useCases":["Automated trivia mining agents that answer questions to earn POIC tokens","Building quiz or trivia applications with AI-generated questions","Demonstrating x402 micropayment protocol integration on Base","Gamified token distribution through knowledge-based challenges","Testing autonomous agent workflows with paid API calls"],"bestFor":["Developers exploring x402 protocol micropayments on Base","Agents or bots that need fresh, unique trivia questions on demand","Participants in the Proof of Intelligence Mint token game","Builders prototyping pay-per-call AI endpoints"],"notFor":["High-volume free trivia question generation (each call costs 1.25 USDC)","Production quiz platforms needing customizable difficulty, topic, or question count parameters","Users without USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:08.998Z"},"updatedAt":"2026-04-24T08:30:55.443Z"}}