Global DeFi market

Global DeFi snapshot: DeFi market cap (USD), ETH market cap, DeFi-to-ETH ratio, 24h DeFi trading volume, DeFi dominance % of the whole crypto market, and the top DeFi coin with its share of DeFi. Send GET /api/global-defi with no input and pay $0.005 per call over x402 or MPP (there is no free tier). It returns a JSON object with source, fetchedAt, cached, defiMarketCapUsd, ethMarketCapUsd and 4 more.

The DeFi companion of crypto-global (whole-market caps and BTC/ETH dominance) and of defi-tvl (locked value, a different measure). Cached in-process for 5 minutes.

Category: Crypto & onchain data · Tags: crypto defi global dominance market-cap macro

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Parameters

Global DeFi market takes no parameters.

Example request

curl -i "https://agent402.tools/api/global-defi"

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

Example response

{
  "source": "coingecko",
  "fetchedAt": "2026-08-22T13:20:00.000Z",
  "cached": false,
  "defiMarketCapUsd": 112237506811.1,
  "ethMarketCapUsd": 292876442962.28,
  "defiToEthRatioPct": 38.3317,
  "defiVolume24hUsd": 10184726070.56,
  "defiDominancePct": 4.1566,
  "topCoin": {
    "name": "Lido Staked Ether",
    "defiDominancePct": 20.7086
  }
}

From an MCP client

catalog.call {
  "slug": "global-defi",
  "params": {}
}

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

Errors and behavior

• There is no input to get wrong: any request to /api/global-defi runs the tool.
• 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 (Authorization: Bearer a402_...) also pays it.
• A POST with a JSON body to /api/global-defi 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/global-defi");

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