# Xynaptic Crypto Global

> Xynaptic Crypto Global is a paid API for AI agents from api.xynaptic.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Returns a global crypto market snapshot including total market cap, BTC/ETH dominance percentages, 24-hour trading volume, and an overall market trend assessment.

## Facts

- Endpoint: GET https://api.xynaptic.io/v1/crypto-global?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xynaptic-crypto-global-4286a318
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fB06d7E5LcA_M5Q6XB1ne

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 xynaptic-crypto-global-4286a318
```

Example prompt: What does the global crypto market look like right now — total market cap, Bitcoin and Ethereum dominance, 24-hour volume, and whether the trend is bullish or bearish?

## When to prefer this

Choose this endpoint when you need a high-level, aggregated view of the entire cryptocurrency market rather than prices for individual coins. It is ideal for market context, macro trend analysis, or portfolio decision support. Prefer it over individual coin price endpoints (like Xynaptic Crypto Live) when total market cap or dominance figures are the primary need, and over Xynaptic Crypto Brief when you need raw structured data rather than a human-readable digest.

## Known failure modes

- Upstream CoinMarketCap Pro API outage returns a 503 or error payload
- Payment failure (x402) if USDC balance is insufficient, returning a 402 response
- Stale data if CoinMarketCap cache has not refreshed recently
- Rate limiting if the endpoint is called excessively in a short window

## How this service works

Xynaptic Crypto Global — global crypto market snapshot (CoinMarketCap Pro): total market cap, BTC/ETH dominance, 24h volume, market trend assessment. GET (no params).

## Output

Returns a structured snapshot of the global cryptocurrency market including: total market capitalization (in USD), Bitcoin dominance percentage, Ethereum dominance percentage, total 24-hour trading volume, and a market trend assessment (e.g. bullish, bearish, neutral) — sourced from CoinMarketCap Pro.

## 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",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "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/xynaptic-crypto-global-4286a318/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.xynaptic.io](https://www.zero.xyz/host/api.xynaptic.io/llms.txt)