# x402 Data Hub v2 — Crypto Fear & Greed Sentiment Index

> x402 Data Hub v2 — Crypto Fear & Greed Sentiment Index is a paid API for AI agents from x402-data-hub-v2.vercel.app, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-15).

Returns the current crypto market Fear & Greed sentiment index score and label, reflecting overall market mood

## Facts

- Endpoint: POST https://x402-data-hub-v2.vercel.app/api/sentiment/fear-greed
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-data-hub-v2-crypto-fear-greed-sentiment-index-8b4d1cfb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IwLsaVFpUzbDX6n7mohNt

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-data-hub-v2-crypto-fear-greed-sentiment-index-8b4d1cfb -d '<json body>'
```

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

## When to prefer this

Choose this endpoint when you need a quick, quantitative crypto market sentiment signal — specifically the Fear & Greed Index — for trading context, portfolio decisions, or market commentary. Prefer over general news sentiment when you want a single aggregate numeric score rather than per-asset or per-article sentiment.

## Known failure modes

- Payment failure or insufficient USDC balance returns 402 Payment Required
- Upstream data source unavailable may return 503 or empty data
- Malformed POST body may return 400 Bad Request
- Rate limiting or quota exceeded may return 429

## How this service works

16 paid endpoints - Crypto, Exchange, Yield, Governance, Sentiment

## Output

Returns the current Fear & Greed Index numeric score (0–100) and corresponding sentiment label (e.g. Extreme Fear, Fear, Neutral, Greed, Extreme Greed), reflecting aggregate market mood across crypto markets.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-data-hub-v2-crypto-fear-greed-sentiment-index-8b4d1cfb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-data-hub-v2.vercel.app](https://www.zero.xyz/host/x402-data-hub-v2.vercel.app/llms.txt)