# Crypto Fear & Greed Index

> Crypto Fear & Greed Index is a paid API for AI agents from manylives.me, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-13).

Returns today's crypto market Fear & Greed score (0-100) with classification, plus up to 30 days of historical daily scores.

## Facts

- Endpoint: GET https://manylives.me/paid/crypto/fear-greed?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-fear-greed-index-1bf2c368
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jiJ_Lw1oiIwdFI0WlRmrk

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 crypto-fear-greed-index-1bf2c368
```

Example prompt: What's today's crypto Fear & Greed index score and classification, and can you show me how sentiment has trended over the last 7 days?

## When to prefer this

Use this endpoint when you need a simple, numeric sentiment gauge for the overall crypto market — especially for daily check-ins, trend monitoring over weeks, or triggering alerts at sentiment extremes. Prefer this over raw price feeds when what matters is market psychology rather than exact prices.

## Known failure modes

- Invalid 'days' parameter (non-numeric or >30) may return an error or default to 1
- Payment not fulfilled (402) if x402 payment header is missing or insufficient
- Service unavailability resulting in 5xx errors
- Empty history array if fewer days of data exist than requested

## How this service works

Crypto market Fear & Greed index: today's score (0-100) and classification, plus up to 30 days of history for trend.

## Output

Returns a JSON object with today's numeric score (0-100), its text classification (e.g. 'Neutral', 'Fear', 'Greed', 'Extreme Fear', 'Extreme Greed'), and an array of historical daily entries each containing date, score, and classification for up to 30 past days.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "days": {
       "type": "string",
       "examples": [
        "7"
       ],
       "description": "optional, history length (default 1, max 30)"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "properties": {
      "score": {
       "type": "number"
      },
      "history": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "date": {
          "type": "string"
         },
         "score": {
          "type": "number"
         },
         "classification": {
          "type": "string"
         }
        }
       }
      },
      "classification": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "score": 54,
  "history": [
   {
    "date": "2026-10-08",
    "score": 54,
    "classification": "Neutral"
   }
  ],
  "classification": "Neutral"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-fear-greed-index-1bf2c368/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from manylives.me](https://www.zero.xyz/host/manylives.me/llms.txt)