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Saylor Innovations Crypto Fear & Greed Index
x402
Saylor Innovations Crypto Fear & Greed Index is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-03).
Returns the current Crypto Fear & Greed Index value with label, trend, rolling averages, and 30-day historical data
Price / call$0.001
Success—
StatusUnknown
How this service works
Crypto Fear & Greed Index with 30-day history — News & Sentiment
Output
Returns a JSON object containing the current Fear & Greed Index numeric value (0-100), a sentiment label (e.g. 'Extreme Fear', 'Greed'), a trend string, yesterday's value, 7-day rolling average, 30-day rolling average, and an array of up to 30 daily historical data points each containing date and index value.
Example use cases
Daily crypto market mood check
“What's today's Fear & Greed Index for crypto — is the market in fear or greed, and how does that compare to yesterday and the 7-day average?”
Sentiment-based trading signal
“Before I make a crypto trade, can you check the current Fear & Greed Index value and tell me whether the market is leaning fearful or greedy and what direction the trend is heading?”
30-day sentiment trend review
“Pull up the full 30-day history of the crypto Fear & Greed Index so I can see how market sentiment has shifted over the past month.”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/news/fear-greed?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, structured snapshot of overall crypto market sentiment including historical context. It is ideal for agents building trading dashboards, monitoring market mood before executing crypto decisions, or enriching reports with sentiment signals. It is not suited for token-specific sentiment analysis or social media sentiment — use it for the aggregate Fear & Greed Index only.
Side effects
- Data source unavailability causing null values in value/yesterday/avg_7d/avg_30d fields
- Stale data if upstream provider has not updated the index recently
- Empty or partial history array if historical data is incomplete
- HTTP 402 if payment is not provided via x402 protocol
- Network timeout if the endpoint is temporarily overloaded
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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