DEX volume by protocol

Decentralized exchanges ranked by 24h spot trading volume from DefiLlama's free DEX overview: per-DEX 24h/7d/30d/1y/all-time volume with 1d/7d/30d change, category and chains; optional chain scope (Ethereum, Base, Solana, Arbitrum...), category filter and name search; sector totals and the list of chains with DEX volume. limit up to 100. Send POST /api/defi-dex-volume with no required fields (5 optional) and pay $0.001 per call over x402 or MPP (there is no free tier). It returns a JSON object with source, fetchedAt, cached, unit, chain and 4 more.

Keyless public data.

Category: Crypto & onchain data · Tags: crypto defi dex volume trading ranking defillama uniswap

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Parameters

Example request

curl -i -X POST https://agent402.tools/api/defi-dex-volume \
  -H "Content-Type: application/json" \
  -d '{"chain":"Base","limit":5}'

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

Example response

{
  "source": "defillama-dexs",
  "fetchedAt": "2026-08-22T12:00:00.000Z",
  "cached": true,
  "unit": "USD",
  "chain": "Base",
  "totals": {
    "total24hUsd": 1200000000,
    "total7dUsd": 9000000000,
    "total30dUsd": 40000000000,
    "change1dPct": -3.1,
    "change7dPct": 4.2,
    "change1mPct": 11
  },
  "matched": 60,
  "count": 1,
  "dexs": [
    {
      "rank": 1,
      "name": "Aerodrome Slipstream",
      "slug": "aerodrome-slipstream",
      "category": "Dexs",
      "protocolType": "protocol",
      "chains": [
        "Base"
      ],
      "chainCount": 1,
      "total24hUsd": 600000000,
      "total7dUsd": 4500000000,
      "total30dUsd": 20000000000,
      "total1yUsd": 250000000000,
      "totalAllTimeUsd": 400000000000,
      "change1dPct": -2.5,
      "change7dPct": 3.9,
      "change1mPct": 9.8
    }
  ]
}

From an MCP client

catalog.call {
  "slug": "defi-dex-volume",
  "params": {
    "chain": "Base",
    "limit": 5
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for defi-dex-volume; 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 GET or HEAD to /api/defi-dex-volume returns the same 402 quote, so the price can be read without a body.
• 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/defi-dex-volume", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "chain": "Base",
    "limit": 5
  }),
});

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