{"uid":"cap_zHSj-xjtxLivBtXajmdlq","slug":"market-fear-greed-index-api-fafec6f0","name":"Market Fear & Greed Index API","description":"Market fear & greed index. Aggregated investor sentiment from CNN Fear & Greed, the crypto Fear & Greed index, and the VIX volatility gauge.","url":"https://api.kadec0.xyz/v1/market-sentiment","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"asset_class":{"enum":["crypto","stocks","all"],"type":"string","default":"all"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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_8AAvRyiWy75tGXj03lJGv","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 aggregated investor sentiment scores from CNN Fear & Greed, Crypto Fear & Greed, and VIX volatility gauge, filterable by asset class.","exampleAgentPrompt":"What's the current fear and greed sentiment across both crypto and stock markets — give me the combined reading along with whatever VIX and CNN scores are available.","exampleUseCases":[{"title":"Morning market mood briefing","prompt":"Before I start trading today, give me a quick rundown of overall market sentiment — are investors feeling fearful or greedy right now across stocks and crypto?"},{"title":"Crypto dip buying signal check","prompt":"Bitcoin just dropped 8% overnight — what does the current crypto fear and greed index say? I want to know if we're in extreme fear territory before I decide whether to buy the dip."},{"title":"Portfolio risk contextualization","prompt":"I'm reviewing my portfolio allocation this week — can you pull the latest aggregated market sentiment including the VIX and CNN fear and greed scores so I know whether to de-risk or stay aggressive?"}],"resultDescription":"Returns a sentiment score and label (e.g. Extreme Fear, Greed) aggregated from CNN Fear & Greed, the crypto Fear & Greed index, and the VIX, optionally filtered to crypto or stocks only.","failureModes":["Upstream data source (CNN, Alternative.me, CBOE) temporarily unavailable — may return stale or partial data","Invalid asset_class enum value returns 400 error","Rate limiting or payment failure returns 402 Payment Required","Network timeout if underlying aggregation takes too long"],"whenToPreferThis":"Choose this endpoint when you need a single aggregated view of investor sentiment across multiple sources (CNN, crypto index, VIX) rather than querying each data source separately. Ideal for market mood dashboards, trading signal pipelines, or any agent that needs to contextualize market conditions before making recommendations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:39:35.269Z","isFirstParty":false}