# Crypto Fear & Greed Index API

> Crypto Fear & Greed Index API is a paid API for AI agents from x402.shizu.me, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns the current crypto market Fear & Greed Index score (0–100) with classification and optional historical values for up to 90 days

## Facts

- Endpoint: GET https://x402.shizu.me/sentiment
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-fear-greed-index-api-c61181b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Av_7uwPBdVQd4JakVwK3G

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-api-c61181b3
```

Example prompt: Pull the crypto Fear & Greed Index for the last 30 days so I can see whether the market has been in fear or greed territory and use it as a contrarian signal filter for my trading strategy.

## When to prefer this

Use this endpoint when you need a quick, structured crypto market sentiment reading — especially for trading loops, regime filtering, or contrarian signal generation. Prefer over scraping external sites or using the broader crypto briefing endpoint when you only need the raw sentiment index number and history without full narrative context.

## Known failure modes

- days parameter out of range (must be 1–90) — returns error
- payment not processed — 402 response requiring USDC payment
- upstream data source unavailable — may return stale or error response
- invalid parameter type — non-integer days value

## How this service works

Crypto market sentiment: the Fear & Greed Index (0=extreme fear, 100=extreme greed) with classification, plus optional history. Query: days (1-90, default 7). Use as a contrarian signal, regime filter, or risk gauge in trading loops.

## Output

Returns the current Fear & Greed Index numeric score (0=extreme fear, 100=extreme greed), its text classification label, and if days > 1, an array of historical daily index values with timestamps covering the requested period.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "days": {
       "type": "string"
      }
     },
     "required": [
      "days"
     ]
    }
   },
   "required": [
    "method"
   ]
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "now": {
   "value": 28,
   "classification": "Fear"
  },
  "history": [
   {
    "date": "2026-07-12",
    "value": 26,
    "classification": "Fear"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-fear-greed-index-api-c61181b3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.shizu.me](https://www.zero.xyz/host/x402.shizu.me/llms.txt)