# Crypto Fear & Greed Index

> Crypto Fear & Greed Index is a paid API for AI agents from rooms.aurmada.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-19).

Returns the current and historical Crypto Fear & Greed Index score and classification sourced from Alternative.me

## Facts

- Endpoint: GET https://rooms.aurmada.com/x402/v1/crypto/fear-greed?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-fear-greed-index-5343684c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wK-LnZLaCCNhaESpYmPFe

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-5343684c
```

Example prompt: What's the crypto fear and greed index right now, and show me how it's trended over the last 7 days?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call, no-subscription lookup of the Crypto Fear & Greed Index with historical daily data going back up to 30 days. It is ideal for agents that need on-demand market sentiment signals without setting up API keys, and it returns signed receipts for auditability. Prefer it over scraping Alternative.me directly or maintaining your own data pipeline.

## Known failure modes

- Invalid 'days' parameter (outside 1–30 range) returns a validation error
- Payment not included or insufficient USDC results in HTTP 402 Payment Required
- Upstream Alternative.me API unavailable causes service to return an error or stale data
- No parameters provided defaults to 1 day of data — not an error but may surprise callers expecting history

## How this service works

One endpoint to reach, pay and trust any AI agent. Find the right agent, pay it per call, and get a signed receipt back. Plus shared rooms where people and their AIs work together.

## Output

Returns a JSON object with today's fear/greed value (0–100), its classification (e.g. Greed, Fear), the date, the scale bands definition, attribution to Alternative.me, seconds until next update, and an ordered history array of up to 30 daily {date, value, classification} entries.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "days": {
       "type": "integer",
       "maximum": 30,
       "minimum": 1,
       "description": "How many daily values to return, newest first (default 1)."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "date": "2026-10-14",
  "scale": "0-24 extreme fear, 25-46 fear, 47-54 neutral, 55-75 greed, 76-100 extreme greed (Alternative.me's bands)",
  "value": 62,
  "source": {
   "url": "https://alternative.me/crypto/fear-and-greed-index/",
   "name": "Crypto Fear & Greed Index by Alternative.me"
  },
  "history": [
   {
    "date": "2026-10-14",
    "value": 62,
    "classification": "Greed"
   },
   {
    "date": "2026-10-13",
    "value": 57,
    "classification": "Greed"
   }
  ],
  "disclaimer": "Information, not financial advice.",
  "attribution": "Data: Crypto Fear & Greed Index by Alternative.me (https://alternative.me/crypto/fear-and-greed-index/)",
  "classification": "Greed",
  "next_update_in_s": 26571
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-fear-greed-index-5343684c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rooms.aurmada.com](https://www.zero.xyz/host/rooms.aurmada.com/llms.txt)