{"uid":"cap_k6CBXjl9q23yVkSU1iQuS","slug":"api-myceliasignal-com-9e889da9","name":"Mycelia Signal MSVI ETH/USD Volatility Index Oracle","description":"MSVI Ethereum volatility index — composite of realized vol, implied vol, term structure, funding stress and put/call ratio — Ed25519 signed attestation","url":"https://api.myceliasignal.com/oracle/volatility/eth/usd","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{}}},"response":{"pair":"ETHUSD","unit":"index","value":28.9,"pubkey":"7ab07fbe7d08cd16823e5eb0db0e21f3f38e9366d5fd00d14e95df0fb9b51a1a","degraded":true,"canonical":"v1|VOLATILITY|ETHUSD|MSVI|28.90|index|30D|RV:40.23:0.3,IV:49.56:0.25,TS:0.814:0.15,FR:42.93:0.2,PCR:1.293:0.1|CONFIDENCE:0.5505|METHOD:v1|1780030126|787658","signature":"dM299TE0dNDde4dfu3CLX5MEcNQho91cnzTtEIG2XGNYvetZCu6QFOy0xaKHx5q4a4zuP4ZKWwq3Dy/4GqasCA==","spotPrice":2004.61,"components":{"fr":{"value":42.9324,"weight":0.2,"confidence":1},"iv":{"value":49.56,"weight":0.25,"confidence":0.5},"rv":{"value":40.2326,"weight":0.3,"confidence":0.5351},"ts":{"value":0.8143,"weight":0.15,"confidence":0.3},"pcr":{"value":1.2928,"weight":0.1,"confidence":0.2}},"computedAt":1780030126,"confidence":0.5505,"normalized":true,"optionCount":499,"methodVersion":1,"signingScheme":"ed25519"}},"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_pn5EimYx2B_vbvQjEbMq7","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the MSVI (Mycelia Signal Volatility Index) for ETH/USD as a cryptographically signed Ed25519 attestation","exampleAgentPrompt":"What's the current MSVI volatility index for ETH/USD right now? I need the Ed25519-signed attestation so I can verify it on-chain.","exampleUseCases":null,"resultDescription":"Returns the MSVI ETH/USD volatility index value as a signed attestation object including the numeric volatility score, Ed25519 digital signature, signer public key, and timestamp — allowing recipients to cryptographically verify the data has not been tampered with.","failureModes":["Payment not received or x402 payment flow incomplete — returns 402 Payment Required","Rate limit exceeded — returns 429 Too Many Requests","Upstream market data unavailable — returns 503 Service Unavailable","Invalid payment token — returns 401 Unauthorized"],"whenToPreferThis":"Use this endpoint when you need a cryptographically verifiable, tamper-proof ETH/USD volatility index reading — particularly for smart contract integrations, DeFi protocols, or any use case where downstream consumers must independently verify data authenticity via Ed25519 signature. Prefer over generic market data APIs when on-chain or trustless verification is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T13:00:41.500Z","isFirstParty":false}