# PalmVox Global Crypto Market Overview

> PalmVox Global Crypto Market Overview 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 global crypto market stats including total market cap, BTC dominance, ETH dominance, 24h volume, and number of active cryptocurrencies.

## Facts

- Endpoint: GET https://alpha.palmvox.com/api/market/global
- 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-b7daf673
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-o3TseoQ1ZbTRBhtCQy3Y

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-b7daf673
```

Example prompt: What's the current global crypto market cap, Bitcoin dominance, and 24-hour trading volume right now?

## When to prefer this

Use this endpoint when you need a quick, single-call snapshot of the entire crypto market — total cap, BTC/ETH dominance, and 24h volume — without needing per-coin data. Ideal for dashboards, daily briefings, or context-setting before deeper analysis. Prefer this over per-coin endpoints when the user asks about the macro market picture rather than specific tokens.

## Known failure modes

- CoinGecko data source temporarily unavailable — may return stale or error response
- Rate limiting if called too frequently without proper payment
- Network timeout if the upstream data fetch is slow
- Payment failure if x402 micropayment header is not correctly constructed

## How this service works

Global crypto market overview — total market cap, BTC dominance, 24h volume, number of coins. Free CoinGecko data, packaged for agents.

## Output

Returns a JSON object with total market cap (e.g. $2.68T), BTC dominance percentage (e.g. 58.1%), ETH dominance, 24h volume (e.g. $115.6B), 24h market cap change percentage, and number of active cryptocurrencies (e.g. 17,557).

## Example request

```json
{
 "query": "{\\\"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": {
      "btcDominance": {
       "type": "string"
      },
      "totalMarketCap": {
       "type": "string"
      },
      "totalVolume24h": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "trackRecord",
  "btcDominance",
  "ethDominance",
  "activeCryptos",
  "alsoAvailable",
  "totalMarketCap",
  "totalVolume24h",
  "marketCapChange24h"
 ],
 "properties": {
  "trackRecord": {
   "type": "string"
  },
  "btcDominance": {
   "type": "string"
  },
  "ethDominance": {
   "type": "string"
  },
  "activeCryptos": {
   "type": "number"
  },
  "alsoAvailable": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "url",
     "note",
     "price"
    ],
    "properties": {
     "url": {
      "type": "string"
     },
     "note": {
      "type": "string"
     },
     "price": {
      "type": "string"
     }
    }
   }
  },
  "totalMarketCap": {
   "type": "string"
  },
  "totalVolume24h": {
   "type": "string"
  },
  "marketCapChange24h": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/alpha-palmvox-com-b7daf673/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)