# Foundry Crypto Fear and Greed Index

> Foundry Crypto Fear and Greed Index is a paid API for AI agents from minty-sprout.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-01).

Returns today's Crypto Fear & Greed Index value and the last 7 days of historical values with classifications

## Facts

- Endpoint: POST https://minty-sprout.onrender.com/v1/fear-greed?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/foundry-crypto-fear-and-greed-index-6ec7f35b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TPaEodSeJbAy9RV6BzJCO

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 foundry-crypto-fear-and-greed-index-6ec7f35b -d '<json body>'
```

Example prompt: What's the crypto fear and greed index today, and how has it looked over the past week?

## When to prefer this

Use this endpoint when you need a quick, standardized crypto market sentiment signal based on the widely recognized Fear & Greed Index. It is ideal for pre-trade analysis, daily briefings, or monitoring sentiment trends without building a custom data pipeline. Prefer this over raw on-chain metrics endpoints when a human-interpretable sentiment label (Fear/Greed) is sufficient.

## Known failure modes

- Upstream alternative.me API unavailable — index data may be stale or missing
- Malformed or empty response if the data provider is experiencing downtime
- No historical data returned if fewer than 7 days of records are available from the upstream source

## How this service works

Crypto Fear and Greed Index: today's value and the last 7 days. Input: any text.

## Output

Returns today's Crypto Fear & Greed Index as a numeric value (0-100) with a classification label (e.g. Fear, Neutral, Greed, Extreme Fear, Extreme Greed) and a timestamp, plus an array of the last 7 days of daily values with the same structure. Source attribution to alternative.me is included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "maxLength": 8000,
   "description": "Any text"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "today": {
   "date": "1793404800",
   "value": 30,
   "classification": "Fear"
  },
  "source": "alternative.me Crypto Fear & Greed Index",
  "last_7_days": [
   {
    "date": "1793404800",
    "value": 30,
    "classification": "Fear"
   },
   {
    "date": "1793318400",
    "value": 30,
    "classification": "Fear"
   },
   {
    "date": "1793232000",
    "value": 51,
    "classification": "Neutral"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/foundry-crypto-fear-and-greed-index-6ec7f35b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from minty-sprout.onrender.com](https://www.zero.xyz/host/minty-sprout.onrender.com/llms.txt)