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Crypto Fear & Greed Index API
x402
Crypto Fear & Greed Index API is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns the current Crypto Fear & Greed Index score (0=extreme fear, 100=extreme greed) with weekly trend data as a contrarian market-sentiment signal
Price / call$0.005
Success—
StatusUnknown
How this service works
Crypto Fear & Greed index (0=extreme fear, 100=extreme greed) with weekly trend — a contrarian market-sentiment signal. Send {}.
Output
Returns the current Fear & Greed Index score on a 0-100 scale (0=extreme fear, 100=extreme greed), a sentiment classification label, and a weekly trend indicating whether market sentiment is improving or deteriorating.
Example use cases
Example prompt
“What's the current crypto Fear & Greed Index score and has sentiment been trending more fearful or greedy this week?”
Technical details
Endpoint
POSThttps://x402-services-production.up.railway.app/api/predict/feargreedWhen to prefer
Use this endpoint when you need a quick, single-call snapshot of overall crypto market sentiment using the widely-recognized Fear & Greed Index metric, especially for contrarian trading signals or market timing analysis. Prefer this over raw price data endpoints when you want a synthesized sentiment score rather than individual asset metrics.
Side effects
- Empty or malformed request body may return 400 error
- Upstream data source unavailability may return 503 or stale data
- Payment not processed correctly may return 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| _ | string | No parameters |
Tags
x402
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