# x402-free-Hub Crypto Fear & Greed Sentiment Index

> x402-free-Hub Crypto Fear & Greed Sentiment Index is a paid API for AI agents from x402-free-hub.vercel.app, paid per call via x402, $0.06/call, status unknown (last checked 2026-10-11).

Returns the current Crypto Fear & Greed Index sentiment score and label for market mood analysis

## Facts

- Endpoint: POST https://x402-free-hub.vercel.app/api/sentiment/fear-greed?utm_source=zero.xyz
- Price: $0.06/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-free-hub-crypto-fear-greed-sentiment-index-6def90fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_d0F_cDIbUD3nAd__YblRp

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 x402-free-hub-crypto-fear-greed-sentiment-index-6def90fd -d '<json body>'
```

Example prompt: What is the current crypto Fear & Greed Index score right now — is the market in fear, greed, or somewhere in between?

## When to prefer this

Use this endpoint when you need a quick, quantified snapshot of overall crypto market sentiment via the well-known Fear & Greed Index. Ideal for DeFi dashboards, trading bots, or market briefing agents that need a single scalar sentiment signal without scraping external sites. At $0.06 USDC per call it is cost-effective for occasional polling. Prefer alternatives if you need granular per-asset sentiment, social media sentiment analysis, or historical time-series sentiment data.

## Known failure modes

- Upstream free data source unavailable causing 502 or 503 error
- Stale or cached data returned if underlying source hasn't updated recently
- Payment not processed correctly resulting in 402 response requiring USDC payment
- POST body format mismatch causing 400 bad request
- Rate limiting if called too frequently in succession

## How this service works

12 paid endpoints - Yield, Governance, Sentiment (all free APIs)

## Output

Returns a numeric Fear & Greed Index score (typically 0-100) along with a categorical sentiment label (e.g. Extreme Fear, Fear, Neutral, Greed, Extreme Greed) and likely a timestamp indicating when the data was last updated.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-free-hub-crypto-fear-greed-sentiment-index-6def90fd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-free-hub.vercel.app](https://www.zero.xyz/host/x402-free-hub.vercel.app/llms.txt)