# SuVerse Fear & Greed Index

> SuVerse Fear & Greed Index is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-16).

Returns the current crypto market fear and greed index score (0-100) with classification label and 30 days of historical values for trend analysis.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-fear-greed-index
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/proxy-suverse-io-c434d4ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ShVtgulMHEZU1WQwYaa9Y

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 proxy-suverse-io-c434d4ab -d '<json body>'
```

Example prompt: What's the current crypto fear and greed index score right now, and has market sentiment been trending toward fear or greed over the past 30 days?

## When to prefer this

Use this endpoint when you need a quick, structured crypto market sentiment signal — especially for contrarian trading logic (buy extreme fear, sell extreme greed), risk management triggers, or enriching financial dashboards with current and historical sentiment context. Prefer this over raw social sentiment or price-only data when you specifically need the standardized 0–100 fear/greed composite score.

## Known failure modes

- Upstream data source unavailable — service returns error or stale data
- Payment failure — insufficient USDC balance or x402 payment not processed
- Rate limiting — too many requests in a short window
- Network timeout — proxy fails to reach the underlying index provider

## How this service works

Crypto fear and greed sentiment index (0 extreme fear to 100 extreme greed) with classification label, 30-day history for trend analysis, timestamp. AI agent sentiment extreme detector, contrarian signal, risk-management trigger, market mood API.

## Output

Returns the current fear and greed index score (0–100), a classification label (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), an array of 30 daily historical values for trend analysis, and the timestamp of the reading.

## Example request

```json
{
 "action": "get_current_index"
}
```

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/proxy-suverse-io-c434d4ab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)