# Crypto Market Sentiment (Fear & Greed + News)

> Crypto Market Sentiment (Fear & Greed + News) is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns a composite crypto market sentiment score blending the Fear & Greed index with aggregated news-headline sentiment, optionally focused on a specific coin or query.

## Facts

- Endpoint: GET https://api.agentstools.dev/crypto/sentiment
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-market-sentiment-fear-greed-news-bad83650
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KS8iKLENJ489-byIkqKHz

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-market-sentiment-fear-greed-news-bad83650
```

Example prompt: What's the current overall crypto market sentiment — give me the Fear & Greed index blended with news headline sentiment, and break it down specifically for ETH.

## When to prefer this

Use this endpoint when you need a single, synthesized sentiment signal combining both the well-known Fear & Greed index and real-time news headline sentiment into one score — especially when you want a quick bullish/bearish/neutral read on the overall crypto market or a specific coin without having to aggregate multiple data sources yourself.

## Known failure modes

- Invalid or unrecognized coin ticker returns empty or generic market-wide result
- Upstream alternative.me API unavailable causes Fear & Greed component to fail
- RSS feed parsing errors may degrade news sentiment component
- No matching news headlines for a very specific query may return neutral sentiment by default
- Rate limiting or payment failure returns 402 Payment Required

## How this service works

Composite crypto market sentiment: the Fear & Greed index (value, classification, trend) blended with aggregated news-headline sentiment into one bullish/bearish/neutral score, optionally focused on a coin or query. Data by alternative.me (attributed) + curated RSS headlines.

## Output

A composite sentiment object including the Fear & Greed index value and classification (e.g. 'Extreme Fear', 'Greed'), its trend direction, aggregated news headline sentiment scores, and a single combined bullish/bearish/neutral label — optionally scoped to a specific coin or query filter.

## 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": {
      "coin": {
       "type": "string",
       "description": "Focus news sentiment on a coin by ticker or name (BTC, ETH, ...); F&G is market-wide"
      },
      "query": {
       "type": "string",
       "description": "Free-text filter for the news-sentiment component"
      }
     }
    }
   },
   "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-market-sentiment-fear-greed-news-bad83650/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)