# Crypto Fear & Greed Index Historical Data

> Crypto Fear & Greed Index Historical Data is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).

Returns daily historical data for the crypto Fear & Greed Index over a configurable window (2–2000 days), including average, max, min, trend, zone distribution, and the full daily series.

## Facts

- Endpoint: POST https://api.vextorium.com/fear-greed-historico-pago?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-fear-greed-index-historical-data-1514209b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kZdqaex1o5ww7Pm9thP9v

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-historical-data-1514209b -d '<json body>'
```

Example prompt: What has the crypto Fear & Greed Index looked like over the last 60 days? Give me the average, trend, max, min, and a breakdown of how many days were in each sentiment zone.

## When to prefer this

Use this endpoint when you need structured historical crypto Fear & Greed Index data with pre-computed statistics (average, max, min, trend, zone distribution) and a full daily series — especially when you want to avoid calling Alternative.me directly and need the data packaged with zone labels and aggregated analytics ready for downstream use.

## Known failure modes

- Invalid 'dias' value outside 2–2000 range may return an error or default behavior
- Missing required body fields may result in a 400 bad request
- Service may be temporarily unavailable if upstream Alternative.me data feed is down
- Payment failure or insufficient USDC balance returns a 402 or payment error

## How this service works

Daily history of the crypto Fear & Greed Index (0 extreme fear, 100 extreme greed): average, max, min, days in each zone and trend, with the series. Alternative.me data.

## Output

Returns a JSON object with: the number of days requested, average (media), maximum, minimum index values, current day's reading and zone, trend direction ('sube'/'baja'), a breakdown of days spent in each zone (Greed, Neutral, Extreme Greed, etc.), the full daily time series (date, numeric value, zone label), and the data source attribution (Alternative.me).

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "dias": 30,
  "media": 67.8,
  "serie": [
   {
    "zona": "Greed",
    "fecha": "2026-09-03",
    "valor": 65
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-04",
    "valor": 74
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-05",
    "valor": 73
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-06",
    "valor": 73
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-07",
    "valor": 71
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-08",
    "valor": 69
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-09",
    "valor": 66
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-10",
    "valor": 69
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-11",
    "valor": 56
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-12",
    "valor": 63
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-13",
    "valor": 61
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-14",
    "valor": 57
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-15",
    "valor": 69
   },
   {
    "zona": "Neutral",
    "fecha": "2026-09-16",
    "valor": 51
   },
   {
    "zona": "Neutral",
    "fecha": "2026-09-17",
    "valor": 50
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-18",
    "valor": 56
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-19",
    "valor": 71
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-20",
    "valor": 71
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-21",
    "valor": 70
   },
   {
    "zona": "Extreme Greed",
    "fecha": "2026-09-22",
    "valor": 78
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-23",
    "valor": 71
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-24",
    "valor": 71
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-25",
    "valor": 71
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-26",
    "valor": 74
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-27",
    "valor": 70
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-28",
    "valor": 74
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-29",
    "valor": 73
   },
   {
    "zona": "Greed",
    "fecha": "2026-09-30",
    "valor": 71
   },
   {
    "zona": "Greed",
    "fecha": "2026-10-01",
    "valor": 74
   },
   {
    "zona": "Greed",
    "fecha": "2026-10-02",
    "valor": 72
   }
  ],
  "actual": {
   "zona": "Greed",
   "fecha": "2026-10-02",
   "valor": 72
  },
  "fuente": "Alternative.me Crypto Fear & Greed Index",
  "maximo": 78,
  "mi
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-fear-greed-index-historical-data-1514209b/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)