{"uid":"cap_uRd2V-k3-cWi5NgNYCqOE","slug":"financial-data-x402-fear-greed-index-b27ccdfc","name":"Financial Data x402 — Fear & Greed Index","description":"Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.","url":"https://x402financialdata.com/fear-greed","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"current":{"date":"2026-07-30","value":28,"classification":"Fear"},"history":[{"date":"2026-07-30","value":28,"classification":"Fear"},{"date":"2026-07-29","value":29,"classification":"Fear"}],"trend_7d":{"days":7,"change":0,"oldest":{"date":"2026-07-24","value":28,"classification":"Fear"},"average":28.1,"direction":"flat"},"trend_30d":{"days":30,"change":17,"oldest":{"date":"2026-07-01","value":11,"classification":"Extreme Fear"},"average":25.3,"direction":"rising"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_AOuWtim9X5V0goWUjp4-b","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current crypto Fear & Greed Index value, classification, and recent trend data (7-day and 30-day) via pay-per-call over the x402 protocol.","exampleAgentPrompt":"What's the current crypto fear and greed index, and has sentiment been rising or falling over the past 30 days?","exampleUseCases":[{"title":"Daily crypto sentiment check","prompt":"What's today's fear and greed index for crypto, and is the market trending more fearful or greedy compared to last week?"},{"title":"Contrarian buy signal detection","prompt":"Is the crypto market currently in extreme fear territory? I want to know if the fear and greed index has been below 25 recently so I can consider a contrarian buy."},{"title":"Monthly sentiment summary for report","prompt":"Give me a summary of how the crypto fear and greed index has moved over the past 30 days — what's the average, where did it start, and what direction is it trending?"}],"resultDescription":"Returns a JSON object with: (1) current — today's date, numeric fear/greed value (0–100), and text classification (e.g. 'Fear', 'Extreme Fear', 'Greed'); (2) history — array of recent daily {date, value, classification} entries; (3) trend_7d — 7-day summary with change, oldest value, average, and direction ('rising'/'falling'/'flat'); (4) trend_30d — same structure for the 30-day window.","failureModes":["Payment not included or insufficient USDC — returns HTTP 402 Payment Required","Network or provider outage — returns 5xx error with no data","Stale data if upstream sentiment provider is delayed — response still returns but date may lag","Malformed x402 payment header — payment rejected before data is returned"],"whenToPreferThis":"Choose this endpoint when you need real-time or near-real-time crypto market sentiment without committing to an API subscription. It is ideal for agents making pay-per-call requests in USDC on Base or Solana via the x402 protocol, and for workflows that only occasionally need sentiment data. Prefer this over subscription-based Fear & Greed APIs when cost-per-call economics matter or when the agent wallet infrastructure is already x402-compatible.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:40:18.252Z","isFirstParty":false}