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Crypto Fear & Greed Index
x402
Crypto Fear & Greed Index is a paid API for AI agents from agenttoll.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns the current Crypto Fear & Greed index value with a comparison to yesterday's value, plus optional daily history up to 30 days
Price / call$0.001
Success—
StatusUnknown
How this service works
Crypto market sentiment check: the Fear and Greed index with yesterday's value; ?days=7 adds a daily history so you can see whether sentiment is turning
Output
Returns the current Fear & Greed index numeric score and sentiment label (e.g. Fear, Extreme Greed), yesterday's score for comparison, and optionally an array of daily historical values for up to 30 prior days.
Example use cases
Daily trading sentiment check
“What's the crypto fear and greed index right now compared to yesterday? I want to know if sentiment is shifting before I make any trades.”
Weekly sentiment trend analysis
“Pull the fear and greed index for the last 14 days so I can see whether the crypto market has been getting more fearful or greedy over the past two weeks.”
Automated market mood alert
“Check the current crypto fear and greed index and yesterday's value — if the sentiment label changed (e.g. from Fear to Greed), flag it for me.”
Technical details
Endpoint
GEThttps://agenttoll.app/api/feargreedWhen to prefer
Use this endpoint when you need a quick, single-call snapshot of crypto market sentiment including a built-in yesterday comparison and optional short-term history. It is ideal for trading agents, daily briefing bots, or sentiment monitors that need the fear and greed index without building their own aggregation logic.
Side effects
- Invalid 'days' parameter outside 1-30 range returns a validation error
- Payment not processed (x402 payment required error) if USDC payment fails
- Service unavailability if upstream sentiment data source is down
- Empty or stale data if the index has not yet been updated for the current day
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"at": "2026-08-05T13:32:14.339Z",
"days": 7,
"value": 27,
"history": [
{
"date": "2026-08-05T00:00:00.000Z",
"value": 27,
"classification": "Fear"
}
],
"yesterday": 25,
"classification": "Fear"
}
}Tags
x402
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