# Money Reactor Fear & Greed Index

> Money Reactor Fear & Greed Index is a paid API for AI agents from money-reactor.makar52nn2016.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).

Returns the current crypto Fear & Greed index value, classification, and recent historical readings from alternative.me

## Facts

- Endpoint: GET https://money-reactor.makar52nn2016.workers.dev/api/fear-greed?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/money-reactor-fear-greed-index-75c7b111
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R2MTMInrmxyawZuu3SNrV

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability money-reactor-fear-greed-index-75c7b111
```

Example prompt: What's the current crypto Fear and Greed index right now — is the market in fear or greed, and how does that compare to yesterday and a week ago?

## When to prefer this

Choose this endpoint when you need a quick, real-time snapshot of crypto market sentiment via the Fear & Greed index without requiring an API key or account setup. It is ideal for agent workflows that need micro-payment-gated, no-registration access to sentiment data paid per-call via x402/USDC on Base. Prefer this over scraping alternative.me directly when you want a structured JSON response with historical context included.

## Known failure modes

- Payment not received or x402 handshake fails — 402 response with payment requirements
- Upstream alternative.me API unavailable — may return stale or error response
- Malformed response if the upstream data format changes
- Network timeout from Cloudflare Worker

## How this service works

Crypto Fear & Greed index: today + yesterday + week ago + 10-day history (0=extreme fear, 100=extreme greed) — market sentiment in one call

## Output

A JSON object containing the current Fear & Greed index integer value (0-100), its text classification (e.g. 'Greed', 'Fear', 'Neutral', 'Extreme Greed'), the value and classification from yesterday, the value and classification from 7 days ago, and an array of the last 10 days of daily readings — all sourced from alternative.me.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "value": 71,
     "source": "alternative.me",
     "weekAgo": {
      "value": 55,
      "classification": "Neutral"
     },
     "yesterday": {
      "value": 68,
      "classification": "Greed"
     },
     "historyDays10": [
      {
       "value": 71,
       "classification": "Greed"
      }
     ],
     "classification": "Greed"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/money-reactor-fear-greed-index-75c7b111/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from money-reactor.makar52nn2016.workers.dev](https://www.zero.xyz/host/money-reactor.makar52nn2016.workers.dev/llms.txt)