# Crypto Fear & Greed Index

> Crypto Fear & Greed Index is a paid API for AI agents from kite-solana.vercel.app, paid per call via x402, $0.17/call, status unknown (last checked 2026-10-25).

Returns the current crypto market sentiment score (Fear & Greed Index) indicating whether the market is driven by fear or greed

## Facts

- Endpoint: POST https://kite-solana.vercel.app/api/sentiment/fear-greed?utm_source=zero.xyz
- Price: $0.17/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-fear-greed-index-535f8a59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NounyYC6U3EIabQKfbRKW

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-535f8a59 -d '<json body>'
```

Example prompt: What's the current crypto Fear & Greed Index score — is the market in fear or greed territory right now?

## When to prefer this

Use this endpoint when you need a quick, single-call lookup of the aggregate crypto market sentiment index without building your own sentiment pipeline. Prefer this over manual data aggregation when you want a pre-computed Fear & Greed score for trading signals, briefings, or decision support at $0.17 per call.

## Known failure modes

- Upstream data source unavailable — returns generic error in result object
- Payment failure in USDC on Base chain — request not processed
- Stale or cached data returned if upstream index provider has not updated
- Generic 500 error with minimal detail due to thin response schema

## How this service works

400+ paid API endpoints. Social media, AI, crypto, finance, weather, ecommerce, tools. Pay per request with USDC on Base chain.

## Output

Returns a JSON object containing the Fear & Greed Index value (typically 0-100), a sentiment label (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), and possibly a timestamp or additional market data fields nested under a 'result' key.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "result": {
   "data": "example response"
  }
 },
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-fear-greed-index-535f8a59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kite-solana.vercel.app](https://www.zero.xyz/host/kite-solana.vercel.app/llms.txt)