# CoinStats Fear & Greed Index Historical Chart

> CoinStats Fear & Greed Index Historical Chart is a paid API for AI agents from x402.coinstats.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns historical Fear & Greed Index values over a specified number of days, showing crypto market sentiment over time

## Facts

- Endpoint: GET https://x402.coinstats.app/insights/fear-and-greed/chart
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-coinstats-app-b7010bd6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5mPTDXP6fo-v1GxK511xn

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-coinstats-app-b7010bd6
```

Example prompt: Show me the CoinStats Fear & Greed Index chart for the last 90 days so I can see how crypto market sentiment has shifted over time.

## When to prefer this

Use this endpoint when you need historical Fear & Greed Index data from CoinStats over a configurable time window. Prefer this over generic market data endpoints when specifically tracking crypto sentiment trends or building charts of market psychology over time.

## Known failure modes

- Invalid days parameter returns error
- Days value too large may be capped or return partial data
- Payment failure (402) if x402 USDC payment not processed
- Missing or malformed request returns 400 bad request
- Service unavailable returns 503

## How this service works

CoinStats Fear & Greed Index historical chart — market sentiment over time

## Output

An array of historical data points containing Fear & Greed Index scores and timestamps, covering the requested number of days, representing market sentiment progression from extreme fear to extreme greed.

## Example request

```json
{
 "days": 90
}
```

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "properties": {
    "method": {
     "type": "string",
     "enum": [
      "GET"
     ]
    }
   },
   "required": [
    "method"
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-coinstats-app-b7010bd6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.coinstats.app](https://www.zero.xyz/host/x402.coinstats.app/llms.txt)