# Vextorium Crypto Fear & Greed Index History

> Vextorium Crypto Fear & Greed Index History is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-15).

Returns historical Crypto Fear & Greed Index data including a time series, current value, trend, min/max/avg, and zone distribution over a configurable lookback window.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/fear-greed-history?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-crypto-fear-greed-index-history-a56e75ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ozw_DDH_xNdYdoaWc7MYl

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 vextorium-crypto-fear-greed-index-history-a56e75ec -d '<json body>'
```

Example prompt: Pull the crypto fear and greed index history for the last 60 days — I want the current value, the trend, average score, and how many days we've been in each zone like Greed or Extreme Greed.

## When to prefer this

Choose this endpoint when you need structured historical Crypto Fear & Greed Index data with zone classification, trend direction, and aggregate statistics in a single call. Prefer it over scraping Alternative.me directly or building your own aggregation, especially when paying per-call in USDC via x402 is acceptable and you need the data in a clean, agent-ready JSON format.

## Known failure modes

- days parameter out of range (must be 2–2000) may return an error or default behavior
- No data available for very recent dates may result in incomplete series
- Network or provider-side outage returns a 5xx error
- Invalid body type or malformed JSON body returns a 400 error

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

Returns a JSON object with: current index value, zone label (e.g. Greed), and date; a daily time series array with date, zone, and numeric value; aggregate stats (avg, min, max, days count); a trend string; a breakdown of how many days fell into each zone (Greed, Neutral, Extreme Greed); and the data source attribution (Alternative.me).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "days": {
   "type": "integer",
   "description": "2-2000 (default 30)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "avg": 67.8,
  "max": 78,
  "min": 50,
  "days": 30,
  "trend": "sube",
  "series": [
   {
    "date": "2026-09-03",
    "zone": "Greed",
    "value": 65
   },
   {
    "date": "2026-09-04",
    "zone": "Greed",
    "value": 74
   }
  ],
  "source": "Alternative.me Crypto Fear & Greed Index",
  "current": {
   "date": "2026-10-02",
   "zone": "Greed",
   "value": 72
  },
  "days_per_zone": {
   "Greed": 27,
   "Neutral": 2,
   "Extreme Greed": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-crypto-fear-greed-index-history-a56e75ec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)