# Crypto Fear & Greed Index with 7-Day History

> Crypto Fear & Greed Index with 7-Day History is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.005/call, status down (last checked 2026-09-14).

Returns the current Crypto Fear & Greed Index (0-100) with label, 7-day historical values, cached delta, and z-score for anomaly detection.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/fear-greed
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-7850417b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GG4VabwDSbsJ8obohuCsH

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 api-carbon-cashmere-de-7850417b
```

Example prompt: What's the current Crypto Fear & Greed Index right now, and has it moved significantly from the past week — I want to know if we're in anomaly territory based on the z-score so I can think about a contrarian position.

## When to prefer this

Choose this endpoint when you need a quick, enriched sentiment snapshot for crypto markets — especially when you want anomaly detection signals (z-score, delta) alongside the raw Fear & Greed value and 7-day trend, rather than computing these yourself from raw alternative.me data. Ideal for sentiment-aware position sizing logic, contrarian strategy triggers, or any agent workflow that needs to factor market psychology into decisions.

## Known failure modes

- Upstream alternative.me API unavailability causing stale or missing data
- Payment not fulfilled (402 response) if x402 header not provided
- Rate limiting or quota exhaustion returning error response
- Empty or null history_7d array if cache is cold
- Z-score may be unreliable with very short historical windows

## How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

## Output

Returns a JSON object with the current Fear & Greed value (0-100 integer), a label (e.g. 'Extreme Fear', 'Greed'), a 7-day historical array of past values, a cached delta showing recent change, and a z-score indicating how statistically extreme the current reading is relative to recent history.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "label": "Fear",
  "value": 31,
  "history_7d": [
   {
    "ts": "1776988800",
    "label": "Fear",
    "value": 39
   },
   {
    "ts": "1776902400",
    "label": "Fear",
    "value": 46
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-7850417b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.carbon-cashmere.de](https://www.zero.xyz/host/api.carbon-cashmere.de/llms.txt)