# Crypto Fear & Greed Index

> Crypto Fear & Greed Index is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Returns the current Crypto Fear & Greed Index value and sentiment classification for the broader cryptocurrency market.

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/crypto/crypto-fear-greed-index?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-fear-greed-index-c16b0215
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R0PLupPHEKkmBE7KScP9l

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-c16b0215
```

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

## When to prefer this

Choose this endpoint when you need a quick, low-cost ($0.001 USDC) real-time read of overall crypto market sentiment without needing to sign up for an API key. Ideal for agents automating trading decisions, portfolio rebalancing triggers, or daily sentiment reports. Prefer this over scraping or heavier financial data APIs when only the current sentiment classification and score are needed.

## Known failure modes

- Upstream data source unavailable — index value not returned
- Payment not processed correctly — 402 response with no data
- Stale data if underlying provider has not refreshed the index recently
- Malformed response if schema parameter is misspecified

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object with the current Fear & Greed Index numeric score (0–100), a sentiment label (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), and typically a timestamp indicating when the reading was recorded.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-fear-greed-index-c16b0215/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)