# Crypto Market Overview

> Crypto Market Overview is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Returns a single-call snapshot of global crypto market metrics from CoinGecko: total market cap, 24h volume, market-cap change, BTC/ETH dominance, and active coin count.

## Facts

- Endpoint: GET https://402.com.tr/api/x402/crypto-global?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-market-overview-0d164897
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-WWVtxJoUN7J_DutvhFNn

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-overview-0d164897
```

Example prompt: Give me the current global crypto market overview — total market cap, 24h volume, BTC and ETH dominance, and how many coins are active right now.

## When to prefer this

Choose this endpoint when an agent needs a single fast call to get the full macro picture of the crypto market — total cap, dominance figures, and 24h momentum — before making risk assessments, portfolio decisions, or generating market summaries. Prefer over individual coin endpoints when you need market-wide context rather than asset-specific data.

## Known failure modes

- CoinGecko API unavailable or rate-limited — endpoint may return an error or stale data
- Payment of $0.01 USDC not completed — request rejected by x402 paywall
- Network timeout if upstream CoinGecko response is slow
- Missing or malformed response fields if CoinGecko changes its API schema

## How this service works

A one-call read of the whole crypto market (CoinGecko): total market capitalisation, 24h volume, the 24h market-cap move, BTC and ETH dominance, and the active-coin count. The macro context an agent uses to size risk before acting. Not financial advice.

## Output

Returns a structured object with: total crypto market capitalization (USD), 24-hour trading volume (USD), 24-hour market cap percentage change, Bitcoin dominance (%), Ethereum dominance (%), and the count of active cryptocurrencies — all sourced from CoinGecko's global endpoint.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "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-overview-0d164897/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 402.com.tr](https://www.zero.xyz/host/402.com.tr/llms.txt)