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Crypto Fear & Greed Index via x402
x402
Crypto Fear & Greed Index via x402 is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).
Returns the current and historical Crypto Fear & Greed Index with trend, signal, streaks, and averages — paid per-call via x402 micropayment (0.001 USDC on Base).
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.
Output
A JSON object containing: current numeric value (0-100), zone (e.g. 'fear', 'greed'), human label, trend direction, signal ('NEUTRAL', 'BUY', 'SELL', etc.), 7-day and 30-day averages, 30-day min/max, 1d/7d/30d change deltas, current streak length in days, previous day's value/label, array of historical daily datapoints, reasons array explaining the reading, source URL, and updated_at timestamp.
Example use cases
Sentiment check before a trade
“Before I execute this BTC buy, tell me what the crypto fear and greed index is right now and whether it's been in fear territory for several days — I want to know if this is a capitulation moment.”
Weekly market sentiment report
“Pull the fear and greed index for the past 7 days and summarize whether sentiment is improving or deteriorating, including the 7-day average and how today compares to a month ago.”
Automated trading signal filter
“Check the crypto fear and greed index and tell me the current signal — if it's extreme fear or extreme greed, flag it with the streak length so my agent can decide whether to pause trading.”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/api/fear-greed?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent needs real-time crypto market sentiment context — especially for trading decision filters, DCA timing, or volatility regime detection — and you want no API key friction, paying only $0.001 USDC per call via x402. Prefer over free alternatives when you need trend, streak, and multi-window averages in a single structured response.
Side effects
- Payment failure (402): USDC balance insufficient or x402 payment not properly attached
- Invalid days parameter: value outside 0-30 range returns validation error
- Data source unavailable: alternative.me upstream outage may yield stale or empty response
- Network timeout from workers.dev edge node
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"zone": "fear",
"label": "Fear",
"trend": "falling",
"value": 34,
"avg_7d": 39.4,
"signal": "NEUTRAL",
"source": "https://alternative.me/crypto/fear-and-greed-index/",
"avg_30d": 47.1,
"history": [
{
"date": "2026-10-30",
"label": "Fear",
"value": 34
}
],
"max_30d": 66,
"min_30d": 28,
"reasons": [
"34 Fear, -12 vs 7d ago",
"below 30d avg 47.1"
],
"previous": {
"label": "Fear",
"value": 38
},
"change_1d": -4,
"change_7d": -12,
"change_30d": -20,
"updated_at": "2026-10-30T00:00:00Z",
"streak_days": 5
}
}Tags
x402
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