# Crypto Fear & Greed Index

> Crypto Fear & Greed Index is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns the live Crypto Fear & Greed sentiment index as a score from 0 (extreme fear) to 100 (extreme greed) in JSON format.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/fear-greed
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-fear-greed-index-15763c15
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EFCWoKRqPnxbF-Z5pTuQF

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-15763c15 -d '<json body>'
```

Example prompt: What's the current crypto fear and greed index right now — is the market in fear or greed territory?

## When to prefer this

Use this endpoint when you need the current, live crypto market sentiment score in a lightweight, single-call JSON response. Ideal for trading signals, portfolio dashboards, or agent workflows that react to market mood. Prefer over scraping news or social media sentiment tools when a single numeric index is sufficient.

## Known failure modes

- Upstream data source unavailable — may return 5xx or stale data
- Payment not processed — 402 response requiring USDC payment
- Network timeout if the live data feed is slow

## How this service works

Crypto Fear & Greed sentiment index (0=extreme fear, 100=extreme greed). Live. Returns JSON.

## Output

A JSON object containing the current Fear & Greed index score (0–100), a sentiment label (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), and likely a timestamp indicating when the value was last updated.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-fear-greed-index-15763c15/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)