# Crypto Fear & Greed Index with Market Timing

> Crypto Fear & Greed Index with Market Timing is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns the current Crypto Fear & Greed index value, classification, 7-day and 30-day deltas, current regime streak, 30-day min/max, and a contrarian signal flag for extreme readings.

## Facts

- Endpoint: GET https://api.agentstools.dev/timing/fng
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-fear-greed-index-with-market-timing-ef63ceb9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A7qZBbGAUEVYr4XSpgV3F

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-with-market-timing-ef63ceb9
```

Example prompt: What's the current crypto Fear & Greed index for Bitcoin — is it in extreme fear or greed, how has it trended over the past 30 days, and is there a contrarian signal right now?

## When to prefer this

Choose this endpoint when you need a pre-computed, multi-dimensional sentiment dashboard for crypto — not just a raw index number, but trend context (7-day and 30-day deltas), regime persistence (streak), historical range (30-day min/max), and a ready-made contrarian signal flag. Ideal for agents making timing-aware trading or reporting decisions without needing to compute derivatives themselves. Prefer this over raw index feeds when the agent needs actionable context, not just a snapshot.

## Known failure modes

- Unsupported asset key returns an error (only 'btc' and 'eth' are valid)
- Upstream data source outage may return stale or missing data
- Payment not included or invalid results in 402 Payment Required
- Malformed query parameters return a 400 error

## How this service works

Crypto Fear & Greed index with a market-timing trend: current value and classification, 7-day and 30-day deltas, streak in the current regime, 30-day min and max, and a contrarian flag on extreme fear or greed. Keyless.

## Output

Returns the current Fear & Greed index value and its textual classification (e.g. 'Fear', 'Extreme Greed'), the 7-day and 30-day point deltas, the number of consecutive days in the current sentiment regime (streak), the 30-day minimum and maximum values, and a boolean contrarian flag indicating whether conditions of extreme fear or extreme greed suggest a potential market reversal signal.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "asset": {
       "enum": [
        "btc",
        "eth"
       ],
       "type": "string",
       "description": "Asset key (default btc). AHR999 is Bitcoin-only; Mayer/200WMA/Pi-Cycle are asset-agnostic."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-fear-greed-index-with-market-timing-ef63ceb9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentstools.dev](https://www.zero.xyz/host/api.agentstools.dev/llms.txt)