Crypto global market

Global crypto market snapshot: total market cap, total 24h volume, BTC dominance, ETH dominance, active coin count, active exchange count, and 24h market-cap change %. Send GET /api/crypto-global with no required fields (1 optional) and pay $0.008 per call over x402 or MPP (there is no free tier). It returns a JSON object with currency, totalMarketCap, totalVolume24h, marketCapChange24hPct, btcDominancePct and 4 more.

Returned in a chosen vs_currency (default usd). Backed by CoinGecko /global.

Category: Live public data · Tags: crypto global market dominance macro

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Parameters

Example request

curl -i "https://agent402.tools/api/crypto-global?currency=usd"

Without payment this returns HTTP 402 Payment Required with the exact price for crypto-global; any x402 v2 or MPP client pays it and retries.

Example response

{
  "currency": "usd",
  "totalMarketCap": 2410000000000,
  "totalVolume24h": 92000000000,
  "marketCapChange24hPct": 1.23,
  "btcDominancePct": 54.8,
  "ethDominancePct": 17.6,
  "activeCryptocurrencies": 12450,
  "markets": 952,
  "updatedAt": "2026-06-20T00:30:00Z"
}

From an MCP client

catalog.call {
  "slug": "crypto-global",
  "params": {
    "currency": "usd"
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for crypto-global; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• Every field is optional. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key issued earlier (Authorization: Bearer a402_...) also pays it.
• A POST with a JSON body to /api/crypto-global is served as this GET, with the body as the input.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/crypto-global?currency=usd");

Part of these workflows

Crypto global market is one step in these 5 skill packs, each sold as a single call:

• Crypto market brief - Quick crypto market snapshot: price for a specific coin, trending coins, and global market stats (total cap, BTC dominance, volume) - one call.
• Macro dashboard refresh - The full macro + crypto dashboard in one call: 5 FRED series, 5 Treasury reads, yield-curve spread, crypto market/trending/global, and live gas - the 14-tool basket recurring buyers refresh every cycle, bundled below its a la carte price.
• Crypto research - Pull live price, market structure, OHLC history, trending status, global market context, and recent news for a single coin in one pass.
• Crypto dossier - Everything about a cryptocurrency in one call: live price, 90-day history, trending status, global market context, news search, and top article extraction.
• DeFi dashboard - DeFi market overview: total TVL, ETH price, Base gas, and global crypto stats in one call.

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