# Palmvox Crypto Fear & Greed Index

> Palmvox Crypto Fear & Greed Index is a paid API for AI agents from alpha.palmvox.com, paid per call via x402, $0.003/call, status down (last checked 2026-09-15).

Returns the current Crypto Fear and Greed Index score, market sentiment label, a news headline, and an actionable bias (risk-on/risk-off/neutral)

## Facts

- Endpoint: GET https://alpha.palmvox.com/api/fear-greed
- Price: $0.003/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/alpha-palmvox-com-b1c2f7ed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pcvdzeQE7_sJ43T9uTJlI

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 alpha-palmvox-com-b1c2f7ed
```

Example prompt: What's the current crypto fear and greed index — is the market risk-on, risk-off, or neutral right now?

## When to prefer this

Choose this endpoint when an agent needs a single, cheap, actionable crypto market sentiment signal — especially for Base ecosystem or DeFi trading context — and wants both a quantitative fear/greed score and a qualitative risk bias in one call. At $0.003 USDC it is the lowest-cost sentiment endpoint available on the x402 network.

## Known failure modes

- Service unavailable or upstream data source unreachable (500 error)
- Rate limiting or payment failure via x402 protocol
- Stale data if the underlying market data feed has not updated recently

## How this service works

Returns a market fear and greed sentiment index for crypto trading insights.

## Output

Returns a JSON object with: a numeric fear/greed index score, a sentiment label (e.g. 'Fear', 'Greed', 'Extreme Fear'), the latest relevant crypto news headline, and an actionable bias string indicating risk-on, risk-off, or neutral market positioning.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "bias": {
       "type": "string"
      },
      "index": {
       "type": "number"
      },
      "headline": {
       "type": "string"
      },
      "sentiment": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/alpha-palmvox-com-b1c2f7ed/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha.palmvox.com](https://www.zero.xyz/host/alpha.palmvox.com/llms.txt)