{"uid":"cap_XsetUfZyFdmp62AqeI5Iz","slug":"api-cn402-com-b5a00880","name":"I Ching Hexagram Relations API (Nuclear, Inverse, Opposite)","description":"Hexagram relations, 互卦 综卦 错卦, nuclear hexagram, inverse hexagram, opposite hexagram, I Ching transformation analysis, hexagram derived gua. For a given hexagram return its nuclear (互卦), inverse (综卦), and opposite (错卦) related hexagrams.","url":"https://api.cn402.com/iching/relations","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"num":{"type":"string","description":"Num (required)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.08","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.08/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.08","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.08","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jdzpqagfMPcW4xGETULem","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.08","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the three derived hexagrams — nuclear (互卦), inverse (综卦), and opposite (错卦) — for a given I Ching hexagram","exampleAgentPrompt":"What are the nuclear hexagram, inverse hexagram, and opposite hexagram for I Ching hexagram number 30 (Li / Fire)?","exampleUseCases":null,"resultDescription":"Returns the three derived hexagrams related to the input hexagram: the nuclear hexagram (互卦, formed from inner lines 2-5), the inverse hexagram (综卦, lines flipped upside-down), and the opposite hexagram (错卦, all lines reversed yin/yang), each with their number and name.","failureModes":["Invalid hexagram number (outside 1-64 range) returns an error","Missing required hexagram input parameter returns 400-level error","Payment not provided or insufficient USDC results in 402 Payment Required","Malformed request body returns parsing error"],"whenToPreferThis":"Use this endpoint when you need specifically the three classical I Ching transformation relations (nuclear, inverse, opposite) for a single hexagram, and do not need a full reading or interpretation. Prefer the sibling 'complete I Ching analysis' endpoint if you also need changing lines, judgment text, or image text. This endpoint is ideal for lightweight transformation lookups in divination workflows or educational applications about hexagram structure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:43:15.625Z","isFirstParty":false}