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Money Reactor — Crypto Fear & Greed Index
x402
Money Reactor — Crypto Fear & Greed Index is a paid API for AI agents from mr-river8.makar52nn2016.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).
Returns the current Crypto Fear & Greed Index score, classification, and recent historical values, paid per call in USDC on Base via x402.
Price / call$0.001
Success—
StatusUnknown
How this service works
22 agent-native micro APIs paid per call in USDC on Base via x402: funded bounty radar, honeypot trust scoring, token safety verdicts, crypto prices, multi-asset price snapshots, fear & greed index, full market-pulse snapshot, AI chat completion (Llama 3.1), crypto news, weather, web reader, ERC-20 balances. No accounts, no API keys — instant on-chain settlement.
Output
Returns a JSON object with the current Fear & Greed Index numeric value (0–100), its textual classification (e.g. 'Greed', 'Fear', 'Neutral'), yesterday's value and classification, the value from 7 days ago with classification, and an array of the last 10 days of daily readings with values and classifications. Sourced from alternative.me.
Example use cases
Pre-trade sentiment check for crypto bot
“Before placing any trades, tell me whether the crypto market is currently in fear or greed, and give me the score for today versus yesterday.”
Weekly market mood report
“Pull the Crypto Fear & Greed Index for today and the last 10 days so I can include it in my weekly crypto newsletter summary.”
Contrarian buy-signal alert
“Check the current Crypto Fear & Greed Index — if it's in Extreme Fear (below 25), let me know so I can consider it a contrarian buy signal.”
Technical details
Endpoint
GEThttps://mr-river8.makar52nn2016.workers.dev/api/fear-greed?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, no-account, no-API-key sentiment gauge for the overall crypto market, billed at $0.001 USDC per call on Base. Prefer it over free alternatives when operating in an x402-native agent stack where on-chain micropayments are already set up and you need the fear & greed metric alongside other Money Reactor data (prices, news, etc.) in a single provider ecosystem.
Side effects
- Payment not received or x402 handshake fails — returns 402 Payment Required
- Upstream alternative.me API unavailable — returns 5xx or empty data
- Malformed request — returns 400 Bad Request
- Network timeout from Cloudflare Worker — returns 504
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"value": 71,
"source": "alternative.me",
"weekAgo": {
"value": 55,
"classification": "Neutral"
},
"yesterday": {
"value": 68,
"classification": "Greed"
},
"historyDays10": [
{
"value": 71,
"classification": "Greed"
}
],
"classification": "Greed"
}
}Tags
x402
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