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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, zone classification, streak, and trading signal, paid per-call via x402 USDC micropayment.
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
Returns a JSON object with the current fear/greed value (0–100), zone (fear/neutral/greed), label, trend direction, trading signal, previous day's value, 1d/7d/30d changes, 7d and 30d averages, min/max over 30 days, streak duration in days, a list of human-readable reasons, a history array of daily data points up to 30 days, source URL, and last updated timestamp.
Example use cases
Sentiment check before trade execution
“Before I execute this BTC buy, what's the current fear and greed index and has the sentiment been falling or recovering over the past 7 days?”
30-day market mood dashboard
“Pull me the crypto fear and greed index with the full 30-day history — I want to see the min, max, averages, and how today compares.”
Automated sentiment alert condition
“Check the current crypto fear and greed zone and tell me if we're in extreme fear territory, and how many consecutive days we've been in this streak.”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/v1/crypto/fear-greed?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI trading agent or onchain bot needs real-time crypto market sentiment context without a registered API key, paying only $0.001 USDC per call via x402 micropayment. Ideal for agents that need lightweight sentiment enrichment alongside price or onchain data from the same provider's suite. Prefer over free public APIs when operating in a pay-per-use agent economy where no pre-registration is acceptable.
Side effects
- Payment not provided or insufficient USDC balance returns 402 Payment Required
- Invalid `days` value outside 0–30 range returns a validation error
- Upstream data source (alternative.me) unavailable may return stale or error response
- Network timeout on Cloudflare worker 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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