{"uid":"cap_gJB5lPFISu1tUQW3nZ3of","slug":"open-trivia-db-all-question-categories-4044bd33","name":"Open Trivia DB - All Question Categories","description":"All Open Trivia Database question categories with ids (no params). Returns JSON.","url":"https://clonecho.builda.company/x402/s/opentdb-categories","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_r9U4RZzZ4FY6Tjp1A5q-U","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the complete list of Open Trivia Database question categories with their numeric IDs","exampleAgentPrompt":"Can you get me the full list of trivia question categories from the Open Trivia Database, including their category IDs, so I can pick one for my quiz app?","exampleUseCases":null,"resultDescription":"A JSON object containing an array of trivia category objects, each with a numeric category ID and a category name string (e.g. {id: 9, name: 'General Knowledge'}). Covers all categories available in the Open Trivia Database.","failureModes":["Upstream OpenTDB API unavailable — returns error or empty response","Payment not processed — x402 payment required before data is returned","Network timeout reaching the clonecho proxy"],"whenToPreferThis":"Use this endpoint when you need to programmatically discover all available Open Trivia Database question categories and their numeric IDs, especially before constructing a filtered trivia question request that requires a category_id parameter. Ideal when building quiz apps or fetching trivia by topic.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:00:27.855Z","isFirstParty":false}